/src/flac/src/libFLAC/metadata_iterators.c
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1 | | /* libFLAC - Free Lossless Audio Codec library |
2 | | * Copyright (C) 2001-2009 Josh Coalson |
3 | | * Copyright (C) 2011-2024 Xiph.Org Foundation |
4 | | * |
5 | | * Redistribution and use in source and binary forms, with or without |
6 | | * modification, are permitted provided that the following conditions |
7 | | * are met: |
8 | | * |
9 | | * - Redistributions of source code must retain the above copyright |
10 | | * notice, this list of conditions and the following disclaimer. |
11 | | * |
12 | | * - Redistributions in binary form must reproduce the above copyright |
13 | | * notice, this list of conditions and the following disclaimer in the |
14 | | * documentation and/or other materials provided with the distribution. |
15 | | * |
16 | | * - Neither the name of the Xiph.org Foundation nor the names of its |
17 | | * contributors may be used to endorse or promote products derived from |
18 | | * this software without specific prior written permission. |
19 | | * |
20 | | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
21 | | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
22 | | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
23 | | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
24 | | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
25 | | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
26 | | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
27 | | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
28 | | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
29 | | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
30 | | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
31 | | */ |
32 | | |
33 | | #ifdef HAVE_CONFIG_H |
34 | | # include <config.h> |
35 | | #endif |
36 | | |
37 | | #include <errno.h> |
38 | | #include <stdio.h> |
39 | | #include <stdlib.h> |
40 | | #include <string.h> |
41 | | #include <stdarg.h> |
42 | | |
43 | | #include <sys/stat.h> /* for stat(), maybe chmod() */ |
44 | | |
45 | | #include "private/metadata.h" |
46 | | |
47 | | #include "FLAC/assert.h" |
48 | | #include "FLAC/stream_decoder.h" |
49 | | #include "share/alloc.h" |
50 | | #include "share/compat.h" |
51 | | #include "share/macros.h" |
52 | | #include "private/macros.h" |
53 | | #include "private/memory.h" |
54 | | |
55 | | /* Alias the first (in share/alloc.h) to the second (in src/libFLAC/memory.c). */ |
56 | | #define safe_malloc_mul_2op_ safe_malloc_mul_2op_p |
57 | | |
58 | | /**************************************************************************** |
59 | | * |
60 | | * Local function declarations |
61 | | * |
62 | | ***************************************************************************/ |
63 | | |
64 | | static void pack_uint32_(FLAC__uint32 val, FLAC__byte *b, uint32_t bytes); |
65 | | static void pack_uint32_little_endian_(FLAC__uint32 val, FLAC__byte *b, uint32_t bytes); |
66 | | static void pack_uint64_(FLAC__uint64 val, FLAC__byte *b, uint32_t bytes); |
67 | | static FLAC__uint32 unpack_uint32_(FLAC__byte *b, uint32_t bytes); |
68 | | static FLAC__uint32 unpack_uint32_little_endian_(FLAC__byte *b, uint32_t bytes); |
69 | | static FLAC__uint64 unpack_uint64_(FLAC__byte *b, uint32_t bytes); |
70 | | |
71 | | static FLAC__bool read_metadata_block_header_(FLAC__Metadata_SimpleIterator *iterator); |
72 | | static FLAC__bool read_metadata_block_data_(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block); |
73 | | static FLAC__bool read_metadata_block_header_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__bool *is_last, FLAC__MetadataType *type, uint32_t *length); |
74 | | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb, FLAC__StreamMetadata *block); |
75 | | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_streaminfo_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_StreamInfo *block); |
76 | | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_padding_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Seek seek_cb, FLAC__StreamMetadata_Padding *block, uint32_t block_length); |
77 | | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_application_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_Application *block, uint32_t block_length); |
78 | | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_seektable_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_SeekTable *block, uint32_t block_length); |
79 | | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_vorbis_comment_entry_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_VorbisComment_Entry *entry, uint32_t max_length); |
80 | | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_vorbis_comment_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb, FLAC__StreamMetadata_VorbisComment *block, uint32_t block_length); |
81 | | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_cuesheet_track_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_CueSheet_Track *track); |
82 | | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_cuesheet_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_CueSheet *block); |
83 | | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_picture_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_Picture *block); |
84 | | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_unknown_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_Unknown *block, uint32_t block_length); |
85 | | |
86 | | static FLAC__bool write_metadata_block_header_(FILE *file, FLAC__Metadata_SimpleIteratorStatus *status, const FLAC__StreamMetadata *block); |
87 | | static FLAC__bool write_metadata_block_data_(FILE *file, FLAC__Metadata_SimpleIteratorStatus *status, const FLAC__StreamMetadata *block); |
88 | | static FLAC__bool write_metadata_block_header_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata *block); |
89 | | static FLAC__bool write_metadata_block_data_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata *block); |
90 | | static FLAC__bool write_metadata_block_data_streaminfo_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_StreamInfo *block); |
91 | | static FLAC__bool write_metadata_block_data_padding_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Padding *block, uint32_t block_length); |
92 | | static FLAC__bool write_metadata_block_data_application_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Application *block, uint32_t block_length); |
93 | | static FLAC__bool write_metadata_block_data_seektable_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_SeekTable *block); |
94 | | static FLAC__bool write_metadata_block_data_vorbis_comment_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_VorbisComment *block); |
95 | | static FLAC__bool write_metadata_block_data_cuesheet_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_CueSheet *block); |
96 | | static FLAC__bool write_metadata_block_data_picture_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Picture *block); |
97 | | static FLAC__bool write_metadata_block_data_unknown_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Unknown *block, uint32_t block_length); |
98 | | |
99 | | static FLAC__bool write_metadata_block_stationary_(FLAC__Metadata_SimpleIterator *iterator, const FLAC__StreamMetadata *block); |
100 | | static FLAC__bool write_metadata_block_stationary_with_padding_(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, uint32_t padding_length, FLAC__bool padding_is_last); |
101 | | static FLAC__bool rewrite_whole_file_(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, FLAC__bool append); |
102 | | |
103 | | static void simple_iterator_push_(FLAC__Metadata_SimpleIterator *iterator); |
104 | | static FLAC__bool simple_iterator_pop_(FLAC__Metadata_SimpleIterator *iterator); |
105 | | |
106 | | static uint32_t seek_to_first_metadata_block_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb); |
107 | | static uint32_t seek_to_first_metadata_block_(FILE *f); |
108 | | |
109 | | static FLAC__bool simple_iterator_copy_file_prefix_(FLAC__Metadata_SimpleIterator *iterator, FILE **tempfile, char **tempfilename, FLAC__bool append); |
110 | | static FLAC__bool simple_iterator_copy_file_postfix_(FLAC__Metadata_SimpleIterator *iterator, FILE **tempfile, char **tempfilename, int fixup_is_last_code, FLAC__off_t fixup_is_last_flag_offset, FLAC__bool backup); |
111 | | |
112 | | static FLAC__bool copy_n_bytes_from_file_(FILE *file, FILE *tempfile, FLAC__off_t bytes, FLAC__Metadata_SimpleIteratorStatus *status); |
113 | | static FLAC__bool copy_n_bytes_from_file_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOHandle temp_handle, FLAC__IOCallback_Write temp_write_cb, FLAC__off_t bytes, FLAC__Metadata_SimpleIteratorStatus *status); |
114 | | static FLAC__bool copy_remaining_bytes_from_file_(FILE *file, FILE *tempfile, FLAC__Metadata_SimpleIteratorStatus *status); |
115 | | static FLAC__bool copy_remaining_bytes_from_file_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Eof eof_cb, FLAC__IOHandle temp_handle, FLAC__IOCallback_Write temp_write_cb, FLAC__Metadata_SimpleIteratorStatus *status); |
116 | | |
117 | | static FLAC__bool open_tempfile_(const char *filename, const char *tempfile_path_prefix, FILE **tempfile, char **tempfilename, FLAC__Metadata_SimpleIteratorStatus *status); |
118 | | static FLAC__bool transport_tempfile_(const char *filename, FILE **tempfile, char **tempfilename, FLAC__Metadata_SimpleIteratorStatus *status); |
119 | | static void cleanup_tempfile_(FILE **tempfile, char **tempfilename); |
120 | | |
121 | | static FLAC__bool get_file_stats_(const char *filename, struct flac_stat_s *stats); |
122 | | static void set_file_stats_(const char *filename, struct flac_stat_s *stats); |
123 | | |
124 | | static int fseek_wrapper_(FLAC__IOHandle handle, FLAC__int64 offset, int whence); |
125 | | static FLAC__int64 ftell_wrapper_(FLAC__IOHandle handle); |
126 | | |
127 | | static FLAC__Metadata_ChainStatus get_equivalent_status_(FLAC__Metadata_SimpleIteratorStatus status); |
128 | | |
129 | | |
130 | | #ifdef FLAC__VALGRIND_TESTING |
131 | | static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream) |
132 | | { |
133 | | size_t ret = fwrite(ptr, size, nmemb, stream); |
134 | | if(!ferror(stream)) |
135 | | fflush(stream); |
136 | | return ret; |
137 | | } |
138 | | #else |
139 | 92.6k | #define local__fwrite fwrite |
140 | | #endif |
141 | | |
142 | | /**************************************************************************** |
143 | | * |
144 | | * Level 0 implementation |
145 | | * |
146 | | ***************************************************************************/ |
147 | | |
148 | | static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data); |
149 | | static void metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data); |
150 | | static void error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data); |
151 | | |
152 | | typedef struct { |
153 | | FLAC__bool got_error; |
154 | | FLAC__StreamMetadata *object; |
155 | | } level0_client_data; |
156 | | |
157 | | static FLAC__StreamMetadata *get_one_metadata_block_(const char *filename, FLAC__MetadataType type) |
158 | 45.8k | { |
159 | 45.8k | level0_client_data cd; |
160 | 45.8k | FLAC__StreamDecoder *decoder; |
161 | 45.8k | FILE *file; |
162 | 45.8k | FLAC__bool open_as_ogg = false; |
163 | | |
164 | 45.8k | FLAC__ASSERT(0 != filename); |
165 | | |
166 | 45.8k | cd.got_error = false; |
167 | 45.8k | cd.object = 0; |
168 | | |
169 | 45.8k | decoder = FLAC__stream_decoder_new(); |
170 | | |
171 | 45.8k | if(0 == decoder) |
172 | 0 | return 0; |
173 | | |
174 | 45.8k | FLAC__stream_decoder_set_md5_checking(decoder, false); |
175 | 45.8k | FLAC__stream_decoder_set_metadata_ignore_all(decoder); |
176 | 45.8k | FLAC__stream_decoder_set_metadata_respond(decoder, type); |
177 | | |
178 | | /* Try to open the file and determine whether it is Ogg */ |
179 | 45.8k | if(0 != (file = flac_fopen(filename, "rb"))) { |
180 | 45.8k | FLAC__byte signature[4]; |
181 | 45.8k | if(fread(&signature, 1, 4, file) == 4) { |
182 | 45.6k | if(memcmp(&signature,"OggS",4) == 0) |
183 | 3.27k | open_as_ogg = true; |
184 | 45.6k | } |
185 | 45.8k | fclose(file); |
186 | 45.8k | } |
187 | | |
188 | 45.8k | if(!open_as_ogg) { |
189 | 42.5k | if(FLAC__stream_decoder_init_file(decoder, filename, write_callback_, metadata_callback_, error_callback_, &cd) != FLAC__STREAM_DECODER_INIT_STATUS_OK || cd.got_error) { |
190 | 9 | (void)FLAC__stream_decoder_finish(decoder); |
191 | 9 | FLAC__stream_decoder_delete(decoder); |
192 | 9 | return 0; |
193 | 9 | } |
194 | 42.5k | } |
195 | 3.27k | else { |
196 | 3.27k | if(FLAC__stream_decoder_init_ogg_file(decoder, filename, write_callback_, metadata_callback_, error_callback_, &cd) != FLAC__STREAM_DECODER_INIT_STATUS_OK || cd.got_error) { |
197 | 0 | (void)FLAC__stream_decoder_finish(decoder); |
198 | 0 | FLAC__stream_decoder_delete(decoder); |
199 | 0 | return 0; |
200 | 0 | } |
201 | 3.27k | } |
202 | | |
203 | 45.8k | if(!FLAC__stream_decoder_process_until_end_of_metadata(decoder) || cd.got_error) { |
204 | 21.4k | (void)FLAC__stream_decoder_finish(decoder); |
205 | 21.4k | FLAC__stream_decoder_delete(decoder); |
206 | 21.4k | if(0 != cd.object) |
207 | 1.11k | FLAC__metadata_object_delete(cd.object); |
208 | 21.4k | return 0; |
209 | 21.4k | } |
210 | | |
211 | 24.3k | (void)FLAC__stream_decoder_finish(decoder); |
212 | 24.3k | FLAC__stream_decoder_delete(decoder); |
213 | | |
214 | 24.3k | return cd.object; |
215 | 45.8k | } |
216 | | |
217 | | FLAC_API FLAC__bool FLAC__metadata_get_streaminfo(const char *filename, FLAC__StreamMetadata *streaminfo) |
218 | 31.5k | { |
219 | 31.5k | FLAC__StreamMetadata *object; |
220 | | |
221 | 31.5k | FLAC__ASSERT(0 != filename); |
222 | 31.5k | FLAC__ASSERT(0 != streaminfo); |
223 | | |
224 | 31.5k | object = get_one_metadata_block_(filename, FLAC__METADATA_TYPE_STREAMINFO); |
225 | | |
226 | 31.5k | if (object) { |
227 | | /* can just copy the contents since STREAMINFO has no internal structure */ |
228 | 23.8k | *streaminfo = *object; |
229 | 23.8k | FLAC__metadata_object_delete(object); |
230 | 23.8k | return true; |
231 | 23.8k | } |
232 | 7.72k | else { |
233 | 7.72k | return false; |
234 | 7.72k | } |
235 | 31.5k | } |
236 | | |
237 | | FLAC_API FLAC__bool FLAC__metadata_get_tags(const char *filename, FLAC__StreamMetadata **tags) |
238 | 7.12k | { |
239 | 7.12k | FLAC__ASSERT(0 != filename); |
240 | 7.12k | FLAC__ASSERT(0 != tags); |
241 | | |
242 | 7.12k | *tags = get_one_metadata_block_(filename, FLAC__METADATA_TYPE_VORBIS_COMMENT); |
243 | | |
244 | 7.12k | return 0 != *tags; |
245 | 7.12k | } |
246 | | |
247 | | FLAC_API FLAC__bool FLAC__metadata_get_cuesheet(const char *filename, FLAC__StreamMetadata **cuesheet) |
248 | 7.12k | { |
249 | 7.12k | FLAC__ASSERT(0 != filename); |
250 | 7.12k | FLAC__ASSERT(0 != cuesheet); |
251 | | |
252 | 7.12k | *cuesheet = get_one_metadata_block_(filename, FLAC__METADATA_TYPE_CUESHEET); |
253 | | |
254 | 7.12k | return 0 != *cuesheet; |
255 | 7.12k | } |
256 | | |
257 | | FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) |
258 | 0 | { |
259 | 0 | (void)decoder, (void)frame, (void)buffer, (void)client_data; |
260 | |
|
261 | 0 | return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; |
262 | 0 | } |
263 | | |
264 | | void metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data) |
265 | 28.3k | { |
266 | 28.3k | level0_client_data *cd = (level0_client_data *)client_data; |
267 | 28.3k | (void)decoder; |
268 | | |
269 | | /* |
270 | | * we assume we only get here when the one metadata block we were |
271 | | * looking for was passed to us |
272 | | */ |
273 | 28.3k | if(!cd->got_error && 0 == cd->object) { |
274 | 24.9k | if(0 == (cd->object = FLAC__metadata_object_clone(metadata))) |
275 | 0 | cd->got_error = true; |
276 | 24.9k | } |
277 | 28.3k | } |
278 | | |
279 | | void error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data) |
280 | 7.91k | { |
281 | 7.91k | level0_client_data *cd = (level0_client_data *)client_data; |
282 | 7.91k | (void)decoder; |
283 | | |
284 | 7.91k | if(status != FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC) |
285 | 1.07k | cd->got_error = true; |
286 | 7.91k | } |
287 | | |
288 | | FLAC_API FLAC__bool FLAC__metadata_get_picture(const char *filename, FLAC__StreamMetadata **picture, FLAC__StreamMetadata_Picture_Type type, const char *mime_type, const FLAC__byte *description, uint32_t max_width, uint32_t max_height, uint32_t max_depth, uint32_t max_colors) |
289 | 7.12k | { |
290 | 7.12k | FLAC__Metadata_SimpleIterator *it; |
291 | 7.12k | FLAC__uint64 max_area_seen = 0; |
292 | 7.12k | FLAC__uint64 max_depth_seen = 0; |
293 | | |
294 | 7.12k | FLAC__ASSERT(0 != filename); |
295 | 7.12k | FLAC__ASSERT(0 != picture); |
296 | | |
297 | 7.12k | *picture = 0; |
298 | | |
299 | 7.12k | it = FLAC__metadata_simple_iterator_new(); |
300 | 7.12k | if(0 == it) |
301 | 0 | return false; |
302 | 7.12k | if(!FLAC__metadata_simple_iterator_init(it, filename, /*read_only=*/true, /*preserve_file_stats=*/true)) { |
303 | 2.97k | FLAC__metadata_simple_iterator_delete(it); |
304 | 2.97k | return false; |
305 | 2.97k | } |
306 | 130k | do { |
307 | 130k | if(FLAC__metadata_simple_iterator_get_block_type(it) == FLAC__METADATA_TYPE_PICTURE) { |
308 | 2.92k | FLAC__StreamMetadata *obj = FLAC__metadata_simple_iterator_get_block(it); |
309 | 2.92k | if(0 != obj) { |
310 | 2.62k | FLAC__uint64 area = (FLAC__uint64)obj->data.picture.width * (FLAC__uint64)obj->data.picture.height; |
311 | | |
312 | | /* check constraints */ |
313 | 2.62k | if( |
314 | 2.62k | (type == (FLAC__StreamMetadata_Picture_Type)(-1) || type == obj->data.picture.type) && |
315 | 2.62k | (mime_type == 0 || !strcmp(mime_type, obj->data.picture.mime_type)) && |
316 | 2.62k | (description == 0 || !strcmp((const char *)description, (const char *)obj->data.picture.description)) && |
317 | 2.62k | obj->data.picture.width <= max_width && |
318 | 2.62k | obj->data.picture.height <= max_height && |
319 | 2.62k | obj->data.picture.depth <= max_depth && |
320 | 2.62k | obj->data.picture.colors <= max_colors && |
321 | 2.62k | (area > max_area_seen || (area == max_area_seen && obj->data.picture.depth > max_depth_seen)) |
322 | 2.62k | ) { |
323 | 340 | if(*picture) |
324 | 31 | FLAC__metadata_object_delete(*picture); |
325 | 340 | *picture = obj; |
326 | 340 | max_area_seen = area; |
327 | 340 | max_depth_seen = obj->data.picture.depth; |
328 | 340 | } |
329 | 2.28k | else { |
330 | 2.28k | FLAC__metadata_object_delete(obj); |
331 | 2.28k | } |
332 | 2.62k | } |
333 | 295 | else |
334 | 295 | break; |
335 | 2.92k | } |
336 | 130k | } while(FLAC__metadata_simple_iterator_next(it)); |
337 | | |
338 | 0 | FLAC__metadata_simple_iterator_delete(it); |
339 | | |
340 | 4.14k | return (0 != *picture); |
341 | 7.12k | } |
342 | | |
343 | | |
344 | | /**************************************************************************** |
345 | | * |
346 | | * Level 1 implementation |
347 | | * |
348 | | ***************************************************************************/ |
349 | | |
350 | | #define SIMPLE_ITERATOR_MAX_PUSH_DEPTH (1+4) |
351 | | /* 1 for initial offset, +4 for our own personal use */ |
352 | | |
353 | | struct FLAC__Metadata_SimpleIterator { |
354 | | FILE *file; |
355 | | char *filename, *tempfile_path_prefix; |
356 | | struct flac_stat_s stats; |
357 | | FLAC__bool has_stats; |
358 | | FLAC__bool is_writable; |
359 | | FLAC__Metadata_SimpleIteratorStatus status; |
360 | | FLAC__off_t offset[SIMPLE_ITERATOR_MAX_PUSH_DEPTH]; |
361 | | FLAC__off_t first_offset; /* this is the offset to the STREAMINFO block */ |
362 | | uint32_t depth; |
363 | | /* this is the metadata block header of the current block we are pointing to: */ |
364 | | FLAC__bool is_last; |
365 | | FLAC__MetadataType type; |
366 | | uint32_t length; |
367 | | }; |
368 | | |
369 | | FLAC_API const char * const FLAC__Metadata_SimpleIteratorStatusString[] = { |
370 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK", |
371 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT", |
372 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE", |
373 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_A_FLAC_FILE", |
374 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_WRITABLE", |
375 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA", |
376 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR", |
377 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR", |
378 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR", |
379 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_RENAME_ERROR", |
380 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_UNLINK_ERROR", |
381 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR", |
382 | | "FLAC__METADATA_SIMPLE_ITERATOR_STATUS_INTERNAL_ERROR" |
383 | | }; |
384 | | |
385 | | |
386 | | FLAC_API FLAC__Metadata_SimpleIterator *FLAC__metadata_simple_iterator_new(void) |
387 | 14.2k | { |
388 | 14.2k | FLAC__Metadata_SimpleIterator *iterator = calloc(1, sizeof(FLAC__Metadata_SimpleIterator)); |
389 | | |
390 | 14.2k | if(0 != iterator) { |
391 | 14.2k | iterator->file = 0; |
392 | 14.2k | iterator->filename = 0; |
393 | 14.2k | iterator->tempfile_path_prefix = 0; |
394 | 14.2k | iterator->has_stats = false; |
395 | 14.2k | iterator->is_writable = false; |
396 | 14.2k | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
397 | 14.2k | iterator->first_offset = iterator->offset[0] = -1; |
398 | 14.2k | iterator->depth = 0; |
399 | 14.2k | } |
400 | | |
401 | 14.2k | return iterator; |
402 | 14.2k | } |
403 | | |
404 | | static void simple_iterator_free_guts_(FLAC__Metadata_SimpleIterator *iterator) |
405 | 28.5k | { |
406 | 28.5k | FLAC__ASSERT(0 != iterator); |
407 | | |
408 | 28.5k | if(0 != iterator->file) { |
409 | 14.2k | fclose(iterator->file); |
410 | 14.2k | iterator->file = 0; |
411 | 14.2k | if(iterator->has_stats) |
412 | 1.56k | set_file_stats_(iterator->filename, &iterator->stats); |
413 | 14.2k | } |
414 | 28.5k | if(0 != iterator->filename) { |
415 | 14.2k | free(iterator->filename); |
416 | 14.2k | iterator->filename = 0; |
417 | 14.2k | } |
418 | 28.5k | if(0 != iterator->tempfile_path_prefix) { |
419 | 0 | free(iterator->tempfile_path_prefix); |
420 | 0 | iterator->tempfile_path_prefix = 0; |
421 | 0 | } |
422 | 28.5k | } |
423 | | |
424 | | FLAC_API void FLAC__metadata_simple_iterator_delete(FLAC__Metadata_SimpleIterator *iterator) |
425 | 14.2k | { |
426 | 14.2k | FLAC__ASSERT(0 != iterator); |
427 | | |
428 | 14.2k | simple_iterator_free_guts_(iterator); |
429 | 14.2k | free(iterator); |
430 | 14.2k | } |
431 | | |
432 | | FLAC_API FLAC__Metadata_SimpleIteratorStatus FLAC__metadata_simple_iterator_status(FLAC__Metadata_SimpleIterator *iterator) |
433 | 11.9k | { |
434 | 11.9k | FLAC__Metadata_SimpleIteratorStatus status; |
435 | | |
436 | 11.9k | FLAC__ASSERT(0 != iterator); |
437 | | |
438 | 11.9k | status = iterator->status; |
439 | 11.9k | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
440 | 11.9k | return status; |
441 | 11.9k | } |
442 | | |
443 | | static FLAC__bool simple_iterator_prime_input_(FLAC__Metadata_SimpleIterator *iterator, FLAC__bool read_only) |
444 | 14.6k | { |
445 | 14.6k | uint32_t ret; |
446 | | |
447 | 14.6k | FLAC__ASSERT(0 != iterator); |
448 | | |
449 | 14.6k | if(read_only || 0 == (iterator->file = flac_fopen(iterator->filename, "r+b"))) { |
450 | 10.1k | iterator->is_writable = false; |
451 | 10.1k | if(read_only || errno == EACCES) { |
452 | 10.1k | if(0 == (iterator->file = flac_fopen(iterator->filename, "rb"))) { |
453 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE; |
454 | 0 | return false; |
455 | 0 | } |
456 | 10.1k | } |
457 | 0 | else { |
458 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE; |
459 | 0 | return false; |
460 | 0 | } |
461 | 10.1k | } |
462 | 4.47k | else { |
463 | 4.47k | iterator->is_writable = true; |
464 | 4.47k | } |
465 | | |
466 | 14.6k | ret = seek_to_first_metadata_block_(iterator->file); |
467 | 14.6k | switch(ret) { |
468 | 11.1k | case 0: |
469 | 11.1k | iterator->depth = 0; |
470 | 11.1k | iterator->first_offset = iterator->offset[iterator->depth] = ftello(iterator->file); |
471 | 11.1k | ret = read_metadata_block_header_(iterator); |
472 | | /* The first metadata block must be a streaminfo. If this is not the |
473 | | * case, the file is invalid and assumptions made elsewhere in the |
474 | | * code are invalid */ |
475 | 11.1k | if(iterator->type != FLAC__METADATA_TYPE_STREAMINFO) { |
476 | 2.49k | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA; |
477 | 2.49k | return false; |
478 | 2.49k | } |
479 | 8.65k | return ret; |
480 | 126 | case 1: |
481 | 126 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
482 | 126 | return false; |
483 | 0 | case 2: |
484 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
485 | 0 | return false; |
486 | 3.34k | case 3: |
487 | 3.34k | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_A_FLAC_FILE; |
488 | 3.34k | return false; |
489 | 0 | default: |
490 | 0 | FLAC__ASSERT(0); |
491 | 0 | return false; |
492 | 14.6k | } |
493 | 14.6k | } |
494 | | |
495 | | #if 0 |
496 | | @@@ If we decide to finish implementing this, put this comment back in metadata.h |
497 | | /* |
498 | | * The 'tempfile_path_prefix' allows you to specify a directory where |
499 | | * tempfiles should go. Remember that if your metadata edits cause the |
500 | | * FLAC file to grow, the entire file will have to be rewritten. If |
501 | | * 'tempfile_path_prefix' is NULL, the temp file will be written in the |
502 | | * same directory as the original FLAC file. This makes replacing the |
503 | | * original with the tempfile fast but requires extra space in the same |
504 | | * partition for the tempfile. If space is a problem, you can pass a |
505 | | * directory name belonging to a different partition in |
506 | | * 'tempfile_path_prefix'. Note that you should use the forward slash |
507 | | * '/' as the directory separator. A trailing slash is not needed; it |
508 | | * will be added automatically. |
509 | | */ |
510 | | FLAC__bool FLAC__metadata_simple_iterator_init(FLAC__Metadata_SimpleIterator *iterator, const char *filename, FLAC__bool preserve_file_stats, const char *tempfile_path_prefix); |
511 | | #endif |
512 | | |
513 | | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_init(FLAC__Metadata_SimpleIterator *iterator, const char *filename, FLAC__bool read_only, FLAC__bool preserve_file_stats) |
514 | 14.2k | { |
515 | 14.2k | const char *tempfile_path_prefix = 0; /*@@@ search for comments near 'flac_rename(...)' for what it will take to finish implementing this */ |
516 | | |
517 | 14.2k | FLAC__ASSERT(0 != iterator); |
518 | 14.2k | FLAC__ASSERT(0 != filename); |
519 | | |
520 | 14.2k | simple_iterator_free_guts_(iterator); |
521 | | |
522 | 14.2k | if(!read_only && preserve_file_stats) |
523 | 1.56k | iterator->has_stats = get_file_stats_(filename, &iterator->stats); |
524 | | |
525 | 14.2k | if(0 == (iterator->filename = strdup(filename))) { |
526 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
527 | 0 | return false; |
528 | 0 | } |
529 | 14.2k | if(0 != tempfile_path_prefix && 0 == (iterator->tempfile_path_prefix = strdup(tempfile_path_prefix))) { |
530 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
531 | 0 | return false; |
532 | 0 | } |
533 | | |
534 | 14.2k | return simple_iterator_prime_input_(iterator, read_only); |
535 | 14.2k | } |
536 | | |
537 | | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_is_writable(const FLAC__Metadata_SimpleIterator *iterator) |
538 | 741 | { |
539 | 741 | FLAC__ASSERT(0 != iterator); |
540 | 741 | FLAC__ASSERT(0 != iterator->file); |
541 | | |
542 | 741 | return iterator->is_writable; |
543 | 741 | } |
544 | | |
545 | | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_next(FLAC__Metadata_SimpleIterator *iterator) |
546 | 133k | { |
547 | 133k | FLAC__ASSERT(0 != iterator); |
548 | 133k | FLAC__ASSERT(0 != iterator->file); |
549 | 133k | FLAC__ASSERT(iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
550 | | |
551 | 133k | if(iterator->is_last) |
552 | 986 | return false; |
553 | | |
554 | 132k | if(0 != fseeko(iterator->file, iterator->length, SEEK_CUR)) { |
555 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
556 | 0 | return false; |
557 | 0 | } |
558 | | |
559 | 132k | iterator->offset[iterator->depth] = ftello(iterator->file); |
560 | | |
561 | 132k | return read_metadata_block_header_(iterator); |
562 | 132k | } |
563 | | |
564 | | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_prev(FLAC__Metadata_SimpleIterator *iterator) |
565 | 668 | { |
566 | 668 | FLAC__off_t this_offset; |
567 | | |
568 | 668 | FLAC__ASSERT(0 != iterator); |
569 | 668 | FLAC__ASSERT(0 != iterator->file); |
570 | 668 | FLAC__ASSERT(iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
571 | | |
572 | 668 | if(iterator->offset[iterator->depth] == iterator->first_offset) |
573 | 334 | return false; |
574 | | |
575 | 334 | if(0 != fseeko(iterator->file, iterator->first_offset, SEEK_SET)) { |
576 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
577 | 0 | return false; |
578 | 0 | } |
579 | 334 | this_offset = iterator->first_offset; |
580 | 334 | if(!read_metadata_block_header_(iterator)) |
581 | 0 | return false; |
582 | | |
583 | | /* we ignore any error from ftello() and catch it in fseeko() */ |
584 | 573 | while(ftello(iterator->file) + (FLAC__off_t)iterator->length < iterator->offset[iterator->depth]) { |
585 | 239 | if(0 != fseeko(iterator->file, iterator->length, SEEK_CUR)) { |
586 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
587 | 0 | return false; |
588 | 0 | } |
589 | 239 | this_offset = ftello(iterator->file); |
590 | 239 | if(!read_metadata_block_header_(iterator)) |
591 | 0 | return false; |
592 | 239 | } |
593 | | |
594 | 334 | iterator->offset[iterator->depth] = this_offset; |
595 | | |
596 | 334 | return true; |
597 | 334 | } |
598 | | |
599 | | /*@@@@add to tests*/ |
600 | | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_is_last(const FLAC__Metadata_SimpleIterator *iterator) |
601 | 1.14k | { |
602 | 1.14k | FLAC__ASSERT(0 != iterator); |
603 | 1.14k | FLAC__ASSERT(0 != iterator->file); |
604 | 1.14k | FLAC__ASSERT(iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
605 | | |
606 | 1.14k | return iterator->is_last; |
607 | 1.14k | } |
608 | | |
609 | | /*@@@@add to tests*/ |
610 | | FLAC_API off_t FLAC__metadata_simple_iterator_get_block_offset(const FLAC__Metadata_SimpleIterator *iterator) |
611 | 964 | { |
612 | 964 | FLAC__ASSERT(0 != iterator); |
613 | 964 | FLAC__ASSERT(0 != iterator->file); |
614 | 964 | FLAC__ASSERT(iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
615 | | |
616 | 964 | return (off_t)iterator->offset[iterator->depth]; |
617 | 964 | } |
618 | | |
619 | | FLAC_API FLAC__MetadataType FLAC__metadata_simple_iterator_get_block_type(const FLAC__Metadata_SimpleIterator *iterator) |
620 | 131k | { |
621 | 131k | FLAC__ASSERT(0 != iterator); |
622 | 131k | FLAC__ASSERT(0 != iterator->file); |
623 | 131k | FLAC__ASSERT(iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
624 | | |
625 | 131k | return iterator->type; |
626 | 131k | } |
627 | | |
628 | | /*@@@@add to tests*/ |
629 | | FLAC_API uint32_t FLAC__metadata_simple_iterator_get_block_length(const FLAC__Metadata_SimpleIterator *iterator) |
630 | 964 | { |
631 | 964 | FLAC__ASSERT(0 != iterator); |
632 | 964 | FLAC__ASSERT(0 != iterator->file); |
633 | 964 | FLAC__ASSERT(iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
634 | | |
635 | 964 | return iterator->length; |
636 | 964 | } |
637 | | |
638 | | /*@@@@add to tests*/ |
639 | | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_get_application_id(FLAC__Metadata_SimpleIterator *iterator, FLAC__byte *id) |
640 | 563 | { |
641 | 563 | const uint32_t id_bytes = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8; |
642 | | |
643 | 563 | FLAC__ASSERT(0 != iterator); |
644 | 563 | FLAC__ASSERT(0 != iterator->file); |
645 | 563 | FLAC__ASSERT(0 != id); |
646 | 563 | FLAC__ASSERT(iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
647 | | |
648 | 563 | if(iterator->type != FLAC__METADATA_TYPE_APPLICATION) { |
649 | 535 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT; |
650 | 535 | return false; |
651 | 535 | } |
652 | | |
653 | 28 | if(fread(id, 1, id_bytes, iterator->file) != id_bytes) { |
654 | 2 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
655 | 2 | return false; |
656 | 2 | } |
657 | | |
658 | | /* back up */ |
659 | 26 | if(0 != fseeko(iterator->file, -((int)id_bytes), SEEK_CUR)) { |
660 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
661 | 0 | return false; |
662 | 0 | } |
663 | | |
664 | 26 | return true; |
665 | 26 | } |
666 | | |
667 | | FLAC_API FLAC__StreamMetadata *FLAC__metadata_simple_iterator_get_block(FLAC__Metadata_SimpleIterator *iterator) |
668 | 5.71k | { |
669 | 5.71k | FLAC__StreamMetadata *block = FLAC__metadata_object_new(iterator->type); |
670 | | |
671 | 5.71k | FLAC__ASSERT(0 != iterator); |
672 | 5.71k | FLAC__ASSERT(0 != iterator->file); |
673 | 5.71k | FLAC__ASSERT(iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
674 | | |
675 | 5.71k | if(0 != block) { |
676 | 5.70k | block->is_last = iterator->is_last; |
677 | 5.70k | block->length = iterator->length; |
678 | | |
679 | 5.70k | if(!read_metadata_block_data_(iterator, block)) { |
680 | 716 | FLAC__metadata_object_delete(block); |
681 | 716 | return 0; |
682 | 716 | } |
683 | | |
684 | | /* back up to the beginning of the block data to stay consistent */ |
685 | 4.99k | if(0 != fseeko(iterator->file, iterator->offset[iterator->depth] + FLAC__STREAM_METADATA_HEADER_LENGTH, SEEK_SET)) { |
686 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
687 | 0 | FLAC__metadata_object_delete(block); |
688 | 0 | return 0; |
689 | 0 | } |
690 | 4.99k | } |
691 | 5 | else |
692 | 5 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
693 | | |
694 | 4.99k | return block; |
695 | 5.71k | } |
696 | | |
697 | | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_set_block(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, FLAC__bool use_padding) |
698 | 714 | { |
699 | 714 | FLAC__ASSERT_DECLARATION(FLAC__off_t debug_target_offset = iterator->offset[iterator->depth];) |
700 | 714 | FLAC__bool ret; |
701 | | |
702 | 714 | FLAC__ASSERT(0 != iterator); |
703 | 714 | FLAC__ASSERT(0 != iterator->file); |
704 | 714 | FLAC__ASSERT(0 != block); |
705 | 714 | FLAC__ASSERT(iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
706 | | |
707 | 714 | if(!iterator->is_writable) { |
708 | 20 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_WRITABLE; |
709 | 20 | return false; |
710 | 20 | } |
711 | | |
712 | 694 | if(iterator->type == FLAC__METADATA_TYPE_STREAMINFO || block->type == FLAC__METADATA_TYPE_STREAMINFO) { |
713 | 151 | if(iterator->type != block->type) { |
714 | 17 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT; |
715 | 17 | return false; |
716 | 17 | } |
717 | 151 | } |
718 | | |
719 | 677 | block->is_last = iterator->is_last; |
720 | | |
721 | 677 | if(iterator->length == block->length) |
722 | 502 | return write_metadata_block_stationary_(iterator, block); |
723 | 175 | else if(iterator->length > block->length) { |
724 | 61 | if(use_padding && iterator->length >= FLAC__STREAM_METADATA_HEADER_LENGTH + block->length) { |
725 | 45 | ret = write_metadata_block_stationary_with_padding_(iterator, block, iterator->length - FLAC__STREAM_METADATA_HEADER_LENGTH - block->length, block->is_last); |
726 | 45 | FLAC__ASSERT(!ret || iterator->offset[iterator->depth] == debug_target_offset); |
727 | 45 | FLAC__ASSERT(!ret || ftello(iterator->file) == debug_target_offset + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH); |
728 | 45 | return ret; |
729 | 45 | } |
730 | 16 | else { |
731 | 16 | if((ret = rewrite_whole_file_(iterator, block, /*append=*/false))) { |
732 | 16 | FLAC__ASSERT(!ret || iterator->offset[iterator->depth] == debug_target_offset); |
733 | 16 | FLAC__ASSERT(!ret || ftello(iterator->file) == debug_target_offset + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH); |
734 | 16 | } |
735 | 16 | return ret; |
736 | 16 | } |
737 | 61 | } |
738 | 114 | else /* iterator->length < block->length */ { |
739 | 114 | uint32_t padding_leftover = 0; |
740 | 114 | FLAC__bool padding_is_last = false; |
741 | 114 | if(use_padding) { |
742 | | /* first see if we can even use padding */ |
743 | 107 | if(iterator->is_last) { |
744 | 3 | use_padding = false; |
745 | 3 | } |
746 | 104 | else { |
747 | 104 | const uint32_t extra_padding_bytes_required = block->length - iterator->length; |
748 | 104 | simple_iterator_push_(iterator); |
749 | 104 | if(!FLAC__metadata_simple_iterator_next(iterator)) { |
750 | 1 | (void)simple_iterator_pop_(iterator); |
751 | 1 | return false; |
752 | 1 | } |
753 | 103 | if(iterator->type != FLAC__METADATA_TYPE_PADDING) { |
754 | 12 | use_padding = false; |
755 | 12 | } |
756 | 91 | else { |
757 | 91 | if(FLAC__STREAM_METADATA_HEADER_LENGTH + iterator->length == extra_padding_bytes_required) { |
758 | 6 | padding_leftover = 0; |
759 | 6 | block->is_last = iterator->is_last; |
760 | 6 | } |
761 | 85 | else if(iterator->length < extra_padding_bytes_required) |
762 | 6 | use_padding = false; |
763 | 79 | else { |
764 | 79 | padding_leftover = FLAC__STREAM_METADATA_HEADER_LENGTH + iterator->length - extra_padding_bytes_required; |
765 | 79 | padding_is_last = iterator->is_last; |
766 | 79 | block->is_last = false; |
767 | 79 | } |
768 | 91 | } |
769 | 103 | if(!simple_iterator_pop_(iterator)) |
770 | 0 | return false; |
771 | 103 | } |
772 | 107 | } |
773 | 113 | if(use_padding) { |
774 | 85 | if(padding_leftover == 0) { |
775 | 6 | ret = write_metadata_block_stationary_(iterator, block); |
776 | 6 | FLAC__ASSERT(!ret || iterator->offset[iterator->depth] == debug_target_offset); |
777 | 6 | FLAC__ASSERT(!ret || ftello(iterator->file) == debug_target_offset + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH); |
778 | 6 | return ret; |
779 | 6 | } |
780 | 79 | else { |
781 | 79 | FLAC__ASSERT(padding_leftover >= FLAC__STREAM_METADATA_HEADER_LENGTH); |
782 | 79 | ret = write_metadata_block_stationary_with_padding_(iterator, block, padding_leftover - FLAC__STREAM_METADATA_HEADER_LENGTH, padding_is_last); |
783 | 79 | FLAC__ASSERT(!ret || iterator->offset[iterator->depth] == debug_target_offset); |
784 | 79 | FLAC__ASSERT(!ret || ftello(iterator->file) == debug_target_offset + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH); |
785 | 79 | return ret; |
786 | 79 | } |
787 | 85 | } |
788 | 28 | else { |
789 | 28 | if((ret = rewrite_whole_file_(iterator, block, /*append=*/false))) { |
790 | 28 | FLAC__ASSERT(!ret || iterator->offset[iterator->depth] == debug_target_offset); |
791 | 28 | FLAC__ASSERT(!ret || ftello(iterator->file) == debug_target_offset + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH); |
792 | 28 | } |
793 | 28 | return ret; |
794 | 28 | } |
795 | 113 | } |
796 | 677 | } |
797 | | |
798 | | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_insert_block_after(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, FLAC__bool use_padding) |
799 | 434 | { |
800 | 434 | uint32_t padding_leftover = 0; |
801 | 434 | FLAC__bool padding_is_last = false; |
802 | | |
803 | 434 | FLAC__ASSERT_DECLARATION(FLAC__off_t debug_target_offset = iterator->offset[iterator->depth] + FLAC__STREAM_METADATA_HEADER_LENGTH + iterator->length;) |
804 | 434 | FLAC__bool ret; |
805 | | |
806 | 434 | FLAC__ASSERT(0 != iterator); |
807 | 434 | FLAC__ASSERT(0 != iterator->file); |
808 | 434 | FLAC__ASSERT(0 != block); |
809 | 434 | FLAC__ASSERT(iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
810 | | |
811 | 434 | if(!iterator->is_writable) { |
812 | 10 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_WRITABLE; |
813 | 10 | return false; |
814 | 10 | } |
815 | | |
816 | 424 | if(block->type == FLAC__METADATA_TYPE_STREAMINFO) { |
817 | 27 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT; |
818 | 27 | return false; |
819 | 27 | } |
820 | | |
821 | 397 | block->is_last = iterator->is_last; |
822 | | |
823 | 397 | if(use_padding) { |
824 | | /* first see if we can even use padding */ |
825 | 288 | if(iterator->is_last) { |
826 | 94 | use_padding = false; |
827 | 94 | } |
828 | 194 | else { |
829 | 194 | simple_iterator_push_(iterator); |
830 | 194 | if(!FLAC__metadata_simple_iterator_next(iterator)) { |
831 | 3 | (void)simple_iterator_pop_(iterator); |
832 | 3 | return false; |
833 | 3 | } |
834 | 191 | if(iterator->type != FLAC__METADATA_TYPE_PADDING) { |
835 | 62 | use_padding = false; |
836 | 62 | } |
837 | 129 | else { |
838 | 129 | if(iterator->length == block->length) { |
839 | 21 | padding_leftover = 0; |
840 | 21 | block->is_last = iterator->is_last; |
841 | 21 | } |
842 | 108 | else if(iterator->length < FLAC__STREAM_METADATA_HEADER_LENGTH + block->length) |
843 | 10 | use_padding = false; |
844 | 98 | else { |
845 | 98 | padding_leftover = iterator->length - block->length; |
846 | 98 | padding_is_last = iterator->is_last; |
847 | 98 | block->is_last = false; |
848 | 98 | } |
849 | 129 | } |
850 | 191 | if(!simple_iterator_pop_(iterator)) |
851 | 0 | return false; |
852 | 191 | } |
853 | 288 | } |
854 | 394 | if(use_padding) { |
855 | | /* move to the next block, which is suitable padding */ |
856 | 119 | if(!FLAC__metadata_simple_iterator_next(iterator)) |
857 | 0 | return false; |
858 | 119 | if(padding_leftover == 0) { |
859 | 21 | ret = write_metadata_block_stationary_(iterator, block); |
860 | 21 | FLAC__ASSERT(iterator->offset[iterator->depth] == debug_target_offset); |
861 | 21 | FLAC__ASSERT(ftello(iterator->file) == debug_target_offset + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH); |
862 | 21 | return ret; |
863 | 21 | } |
864 | 98 | else { |
865 | 98 | FLAC__ASSERT(padding_leftover >= FLAC__STREAM_METADATA_HEADER_LENGTH); |
866 | 98 | ret = write_metadata_block_stationary_with_padding_(iterator, block, padding_leftover - FLAC__STREAM_METADATA_HEADER_LENGTH, padding_is_last); |
867 | 98 | FLAC__ASSERT(iterator->offset[iterator->depth] == debug_target_offset); |
868 | 98 | FLAC__ASSERT(ftello(iterator->file) == debug_target_offset + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH); |
869 | 98 | return ret; |
870 | 98 | } |
871 | 119 | } |
872 | 275 | else { |
873 | 275 | if((ret = rewrite_whole_file_(iterator, block, /*append=*/true))) { |
874 | 242 | FLAC__ASSERT(iterator->offset[iterator->depth] == debug_target_offset); |
875 | 242 | FLAC__ASSERT(ftello(iterator->file) == debug_target_offset + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH); |
876 | 242 | } |
877 | 275 | return ret; |
878 | 275 | } |
879 | 394 | } |
880 | | |
881 | | FLAC_API FLAC__bool FLAC__metadata_simple_iterator_delete_block(FLAC__Metadata_SimpleIterator *iterator, FLAC__bool use_padding) |
882 | 708 | { |
883 | 708 | FLAC__ASSERT_DECLARATION(FLAC__off_t debug_target_offset = iterator->offset[iterator->depth];) |
884 | 708 | FLAC__bool ret; |
885 | | |
886 | 708 | FLAC__ASSERT(iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
887 | | |
888 | 708 | if(!iterator->is_writable) { |
889 | 202 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_WRITABLE; |
890 | 202 | return false; |
891 | 202 | } |
892 | | |
893 | 506 | if(iterator->type == FLAC__METADATA_TYPE_STREAMINFO) { |
894 | 255 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT; |
895 | 255 | return false; |
896 | 255 | } |
897 | | |
898 | 251 | if(use_padding) { |
899 | 189 | FLAC__StreamMetadata *padding = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING); |
900 | 189 | if(0 == padding) { |
901 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
902 | 0 | return false; |
903 | 0 | } |
904 | 189 | padding->length = iterator->length; |
905 | 189 | if(!FLAC__metadata_simple_iterator_set_block(iterator, padding, false)) { |
906 | 0 | FLAC__metadata_object_delete(padding); |
907 | 0 | return false; |
908 | 0 | } |
909 | 189 | FLAC__metadata_object_delete(padding); |
910 | 189 | if(!FLAC__metadata_simple_iterator_prev(iterator)) |
911 | 0 | return false; |
912 | 189 | FLAC__ASSERT(iterator->offset[iterator->depth] + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH + (FLAC__off_t)iterator->length == debug_target_offset); |
913 | 189 | FLAC__ASSERT(ftello(iterator->file) + (FLAC__off_t)iterator->length == debug_target_offset); |
914 | 189 | return true; |
915 | 189 | } |
916 | 62 | else { |
917 | 62 | if((ret = rewrite_whole_file_(iterator, 0, /*append=*/false))) { |
918 | 62 | FLAC__ASSERT(iterator->offset[iterator->depth] + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH + (FLAC__off_t)iterator->length == debug_target_offset); |
919 | 62 | FLAC__ASSERT(ftello(iterator->file) + (FLAC__off_t)iterator->length == debug_target_offset); |
920 | 62 | } |
921 | 62 | return ret; |
922 | 62 | } |
923 | 251 | } |
924 | | |
925 | | |
926 | | |
927 | | /**************************************************************************** |
928 | | * |
929 | | * Level 2 implementation |
930 | | * |
931 | | ***************************************************************************/ |
932 | | |
933 | | |
934 | | typedef struct FLAC__Metadata_Node { |
935 | | FLAC__StreamMetadata *data; |
936 | | struct FLAC__Metadata_Node *prev, *next; |
937 | | } FLAC__Metadata_Node; |
938 | | |
939 | | struct FLAC__Metadata_Chain { |
940 | | char *filename; /* will be NULL if using callbacks */ |
941 | | FLAC__bool is_ogg; |
942 | | FLAC__Metadata_Node *head; |
943 | | FLAC__Metadata_Node *tail; |
944 | | uint32_t nodes; |
945 | | FLAC__Metadata_ChainStatus status; |
946 | | FLAC__off_t first_offset, last_offset; |
947 | | /* |
948 | | * This is the length of the chain initially read from the FLAC file. |
949 | | * it is used to compare against the current length to decide whether |
950 | | * or not the whole file has to be rewritten. |
951 | | */ |
952 | | FLAC__off_t initial_length; |
953 | | /* @@@ hacky, these are currently only needed by ogg reader */ |
954 | | FLAC__IOHandle handle; |
955 | | FLAC__IOCallback_Read read_cb; |
956 | | }; |
957 | | |
958 | | struct FLAC__Metadata_Iterator { |
959 | | FLAC__Metadata_Chain *chain; |
960 | | FLAC__Metadata_Node *current; |
961 | | }; |
962 | | |
963 | | FLAC_API const char * const FLAC__Metadata_ChainStatusString[] = { |
964 | | "FLAC__METADATA_CHAIN_STATUS_OK", |
965 | | "FLAC__METADATA_CHAIN_STATUS_ILLEGAL_INPUT", |
966 | | "FLAC__METADATA_CHAIN_STATUS_ERROR_OPENING_FILE", |
967 | | "FLAC__METADATA_CHAIN_STATUS_NOT_A_FLAC_FILE", |
968 | | "FLAC__METADATA_CHAIN_STATUS_NOT_WRITABLE", |
969 | | "FLAC__METADATA_CHAIN_STATUS_BAD_METADATA", |
970 | | "FLAC__METADATA_CHAIN_STATUS_READ_ERROR", |
971 | | "FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR", |
972 | | "FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR", |
973 | | "FLAC__METADATA_CHAIN_STATUS_RENAME_ERROR", |
974 | | "FLAC__METADATA_CHAIN_STATUS_UNLINK_ERROR", |
975 | | "FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR", |
976 | | "FLAC__METADATA_CHAIN_STATUS_INTERNAL_ERROR", |
977 | | "FLAC__METADATA_CHAIN_STATUS_INVALID_CALLBACKS", |
978 | | "FLAC__METADATA_CHAIN_STATUS_READ_WRITE_MISMATCH", |
979 | | "FLAC__METADATA_CHAIN_STATUS_WRONG_WRITE_CALL" |
980 | | }; |
981 | | |
982 | | |
983 | | static FLAC__Metadata_Node *node_new_(void) |
984 | 1.32M | { |
985 | 1.32M | return calloc(1, sizeof(FLAC__Metadata_Node)); |
986 | 1.32M | } |
987 | | |
988 | | static void node_delete_(FLAC__Metadata_Node *node) |
989 | 1.32M | { |
990 | 1.32M | FLAC__ASSERT(0 != node); |
991 | 1.32M | if(0 != node->data) |
992 | 1.32M | FLAC__metadata_object_delete(node->data); |
993 | 1.32M | free(node); |
994 | 1.32M | } |
995 | | |
996 | | static void chain_init_(FLAC__Metadata_Chain *chain) |
997 | 112k | { |
998 | 112k | FLAC__ASSERT(0 != chain); |
999 | | |
1000 | 112k | chain->filename = 0; |
1001 | 112k | chain->is_ogg = false; |
1002 | 112k | chain->head = chain->tail = 0; |
1003 | 112k | chain->nodes = 0; |
1004 | 112k | chain->status = FLAC__METADATA_CHAIN_STATUS_OK; |
1005 | 112k | chain->initial_length = 0; |
1006 | 112k | chain->read_cb = 0; |
1007 | 112k | } |
1008 | | |
1009 | | static void chain_clear_(FLAC__Metadata_Chain *chain) |
1010 | 74.7k | { |
1011 | 74.7k | FLAC__Metadata_Node *node, *next; |
1012 | | |
1013 | 74.7k | FLAC__ASSERT(0 != chain); |
1014 | | |
1015 | 1.30M | for(node = chain->head; node; ) { |
1016 | 1.22M | next = node->next; |
1017 | 1.22M | node_delete_(node); |
1018 | 1.22M | node = next; |
1019 | 1.22M | } |
1020 | | |
1021 | 74.7k | if(0 != chain->filename) |
1022 | 37.3k | free(chain->filename); |
1023 | | |
1024 | 74.7k | chain_init_(chain); |
1025 | 74.7k | } |
1026 | | |
1027 | | static void chain_append_node_(FLAC__Metadata_Chain *chain, FLAC__Metadata_Node *node) |
1028 | 1.40M | { |
1029 | 1.40M | FLAC__ASSERT(0 != chain); |
1030 | 1.40M | FLAC__ASSERT(0 != node); |
1031 | 1.40M | FLAC__ASSERT(0 != node->data); |
1032 | | |
1033 | 1.40M | node->next = node->prev = 0; |
1034 | 1.40M | node->data->is_last = true; |
1035 | 1.40M | if(0 != chain->tail) |
1036 | 1.38M | chain->tail->data->is_last = false; |
1037 | | |
1038 | 1.40M | if(0 == chain->head) |
1039 | 21.1k | chain->head = node; |
1040 | 1.38M | else { |
1041 | 1.38M | FLAC__ASSERT(0 != chain->tail); |
1042 | 1.38M | chain->tail->next = node; |
1043 | 1.38M | node->prev = chain->tail; |
1044 | 1.38M | } |
1045 | 1.40M | chain->tail = node; |
1046 | 1.40M | chain->nodes++; |
1047 | 1.40M | } |
1048 | | |
1049 | | static void chain_remove_node_(FLAC__Metadata_Chain *chain, FLAC__Metadata_Node *node) |
1050 | 182k | { |
1051 | 182k | FLAC__ASSERT(0 != chain); |
1052 | 182k | FLAC__ASSERT(0 != node); |
1053 | | |
1054 | 182k | if(node == chain->head) |
1055 | 0 | chain->head = node->next; |
1056 | 182k | else |
1057 | 182k | node->prev->next = node->next; |
1058 | | |
1059 | 182k | if(node == chain->tail) |
1060 | 1.06k | chain->tail = node->prev; |
1061 | 180k | else |
1062 | 180k | node->next->prev = node->prev; |
1063 | | |
1064 | 182k | if(0 != chain->tail) |
1065 | 182k | chain->tail->data->is_last = true; |
1066 | | |
1067 | 182k | chain->nodes--; |
1068 | 182k | } |
1069 | | |
1070 | | static void chain_delete_node_(FLAC__Metadata_Chain *chain, FLAC__Metadata_Node *node) |
1071 | 90.8k | { |
1072 | 90.8k | chain_remove_node_(chain, node); |
1073 | 90.8k | node_delete_(node); |
1074 | 90.8k | } |
1075 | | |
1076 | | static FLAC__off_t chain_calculate_length_(FLAC__Metadata_Chain *chain) |
1077 | 28.4k | { |
1078 | 28.4k | const FLAC__Metadata_Node *node; |
1079 | 28.4k | FLAC__off_t length = 0; |
1080 | 1.01M | for(node = chain->head; node; node = node->next) |
1081 | 985k | length += (FLAC__STREAM_METADATA_HEADER_LENGTH + node->data->length); |
1082 | 28.4k | return length; |
1083 | 28.4k | } |
1084 | | |
1085 | | static void iterator_insert_node_(FLAC__Metadata_Iterator *iterator, FLAC__Metadata_Node *node) |
1086 | 367 | { |
1087 | 367 | FLAC__ASSERT(0 != node); |
1088 | 367 | FLAC__ASSERT(0 != node->data); |
1089 | 367 | FLAC__ASSERT(0 != iterator); |
1090 | 367 | FLAC__ASSERT(0 != iterator->current); |
1091 | 367 | FLAC__ASSERT(0 != iterator->chain); |
1092 | 367 | FLAC__ASSERT(0 != iterator->chain->head); |
1093 | 367 | FLAC__ASSERT(0 != iterator->chain->tail); |
1094 | | |
1095 | 367 | node->data->is_last = false; |
1096 | | |
1097 | 367 | node->prev = iterator->current->prev; |
1098 | 367 | node->next = iterator->current; |
1099 | | |
1100 | 367 | if(0 == node->prev) |
1101 | 0 | iterator->chain->head = node; |
1102 | 367 | else |
1103 | 367 | node->prev->next = node; |
1104 | | |
1105 | 367 | iterator->current->prev = node; |
1106 | | |
1107 | 367 | iterator->chain->nodes++; |
1108 | 367 | } |
1109 | | |
1110 | | static void iterator_insert_node_after_(FLAC__Metadata_Iterator *iterator, FLAC__Metadata_Node *node) |
1111 | 9.45k | { |
1112 | 9.45k | FLAC__ASSERT(0 != node); |
1113 | 9.45k | FLAC__ASSERT(0 != node->data); |
1114 | 9.45k | FLAC__ASSERT(0 != iterator); |
1115 | 9.45k | FLAC__ASSERT(0 != iterator->current); |
1116 | 9.45k | FLAC__ASSERT(0 != iterator->chain); |
1117 | 9.45k | FLAC__ASSERT(0 != iterator->chain->head); |
1118 | 9.45k | FLAC__ASSERT(0 != iterator->chain->tail); |
1119 | | |
1120 | 9.45k | iterator->current->data->is_last = false; |
1121 | | |
1122 | 9.45k | node->prev = iterator->current; |
1123 | 9.45k | node->next = iterator->current->next; |
1124 | | |
1125 | 9.45k | if(0 == node->next) |
1126 | 8.82k | iterator->chain->tail = node; |
1127 | 628 | else |
1128 | 628 | node->next->prev = node; |
1129 | | |
1130 | 9.45k | node->prev->next = node; |
1131 | | |
1132 | 9.45k | iterator->chain->tail->data->is_last = true; |
1133 | | |
1134 | 9.45k | iterator->chain->nodes++; |
1135 | 9.45k | } |
1136 | | |
1137 | | /* return true iff node and node->next are both padding */ |
1138 | | static FLAC__bool chain_merge_adjacent_padding_(FLAC__Metadata_Chain *chain, FLAC__Metadata_Node *node) |
1139 | 156k | { |
1140 | 156k | if(node->data->type == FLAC__METADATA_TYPE_PADDING && 0 != node->next && node->next->data->type == FLAC__METADATA_TYPE_PADDING) { |
1141 | 90.3k | const uint32_t growth = FLAC__STREAM_METADATA_HEADER_LENGTH + node->next->data->length; |
1142 | 90.3k | node->data->length += growth; /* new block size can be greater than max metadata block size, but it'll be fixed later in chain_prepare_for_write_() */ |
1143 | | |
1144 | 90.3k | chain_delete_node_(chain, node->next); |
1145 | 90.3k | return true; |
1146 | 90.3k | } |
1147 | 65.9k | else |
1148 | 65.9k | return false; |
1149 | 156k | } |
1150 | | |
1151 | | #if defined(_MSC_VER) |
1152 | | // silence three MSVC warnings 'conversion from 'conversion from 'const __int64' to 'uint32_t', possible loss of data' |
1153 | | #pragma warning ( disable : 4244 ) |
1154 | | #endif |
1155 | | |
1156 | | /* Returns the new length of the chain, or 0 if there was an error. */ |
1157 | | /* WATCHOUT: This can get called multiple times before a write, so |
1158 | | * it should still work when this happens. |
1159 | | */ |
1160 | | /* WATCHOUT: Make sure to also update the logic in |
1161 | | * FLAC__metadata_chain_check_if_tempfile_needed() if the logic here changes. |
1162 | | */ |
1163 | | static FLAC__off_t chain_prepare_for_write_(FLAC__Metadata_Chain *chain, FLAC__bool use_padding) |
1164 | 5.66k | { |
1165 | 5.66k | FLAC__off_t current_length = chain_calculate_length_(chain); |
1166 | 5.66k | FLAC__Metadata_Node * i; |
1167 | | |
1168 | | /* Check all is_last settings on the blocks */ |
1169 | 414k | for(i = chain->head; i->next != NULL; i = i->next) |
1170 | 409k | i->data->is_last = 0; |
1171 | 5.66k | chain->tail->data->is_last = 1; |
1172 | | |
1173 | 5.66k | if(use_padding) { |
1174 | | /* if the metadata shrank and the last block is padding, we just extend the last padding block */ |
1175 | 4.22k | if(current_length < chain->initial_length && chain->tail->data->type == FLAC__METADATA_TYPE_PADDING) { |
1176 | 12 | const FLAC__off_t delta = chain->initial_length - current_length; |
1177 | 12 | chain->tail->data->length += delta; |
1178 | 12 | current_length += delta; |
1179 | 12 | FLAC__ASSERT(current_length == chain->initial_length); |
1180 | 12 | } |
1181 | | /* if the metadata shrank more than 4 bytes then there's room to add another padding block */ |
1182 | 4.21k | else if(current_length + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH <= chain->initial_length) { |
1183 | 84 | FLAC__StreamMetadata *padding; |
1184 | 84 | FLAC__Metadata_Node *node; |
1185 | 84 | if(0 == (padding = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING))) { |
1186 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
1187 | 0 | return 0; |
1188 | 0 | } |
1189 | 84 | padding->length = chain->initial_length - (FLAC__STREAM_METADATA_HEADER_LENGTH + current_length); |
1190 | 84 | if(0 == (node = node_new_())) { |
1191 | 0 | FLAC__metadata_object_delete(padding); |
1192 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
1193 | 0 | return 0; |
1194 | 0 | } |
1195 | 84 | node->data = padding; |
1196 | 84 | chain_append_node_(chain, node); |
1197 | 84 | current_length = chain_calculate_length_(chain); |
1198 | 84 | FLAC__ASSERT(current_length == chain->initial_length); |
1199 | 84 | } |
1200 | | /* if the metadata grew but the last block is padding, try cutting the padding to restore the original length so we don't have to rewrite the whole file */ |
1201 | 4.12k | else if(current_length > chain->initial_length) { |
1202 | 2.25k | const FLAC__off_t delta = current_length - chain->initial_length; |
1203 | 2.25k | if(chain->tail->data->type == FLAC__METADATA_TYPE_PADDING) { |
1204 | | /* if the delta is exactly the size of the last padding block, remove the padding block */ |
1205 | 366 | if((FLAC__off_t)chain->tail->data->length + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH == delta) { |
1206 | 26 | chain_delete_node_(chain, chain->tail); |
1207 | 26 | current_length = chain_calculate_length_(chain); |
1208 | 26 | FLAC__ASSERT(current_length == chain->initial_length); |
1209 | 26 | } |
1210 | | /* if there is at least 'delta' bytes of padding, trim the padding down */ |
1211 | 340 | else if((FLAC__off_t)chain->tail->data->length >= delta) { |
1212 | 236 | chain->tail->data->length -= delta; |
1213 | 236 | current_length -= delta; |
1214 | 236 | FLAC__ASSERT(current_length == chain->initial_length); |
1215 | 236 | } |
1216 | 366 | } |
1217 | 2.25k | } |
1218 | 4.22k | } |
1219 | | |
1220 | | /* check sizes of all metadata blocks; reduce padding size if necessary */ |
1221 | 5.66k | { |
1222 | 5.66k | FLAC__Metadata_Node *node; |
1223 | 420k | for (node = chain->head; node; node = node->next) { |
1224 | 414k | if(node->data->length >= (1u << FLAC__STREAM_METADATA_LENGTH_LEN)) { |
1225 | 168 | if(node->data->type == FLAC__METADATA_TYPE_PADDING) { |
1226 | 116 | node->data->length = (1u << FLAC__STREAM_METADATA_LENGTH_LEN) - 1; |
1227 | 116 | current_length = chain_calculate_length_(chain); |
1228 | 116 | } else { |
1229 | 52 | chain->status = FLAC__METADATA_CHAIN_STATUS_BAD_METADATA; |
1230 | 52 | return 0; |
1231 | 52 | } |
1232 | 168 | } |
1233 | 414k | } |
1234 | 5.66k | } |
1235 | | |
1236 | 5.61k | return current_length; |
1237 | 5.66k | } |
1238 | | |
1239 | | #if defined(_MSC_VER) |
1240 | | #pragma warning ( default : 4244 ) |
1241 | | #endif |
1242 | | |
1243 | | static FLAC__bool chain_read_cb_(FLAC__Metadata_Chain *chain, FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb, FLAC__IOCallback_Tell tell_cb) |
1244 | 24.8k | { |
1245 | 24.8k | FLAC__Metadata_Node *node; |
1246 | | |
1247 | 24.8k | FLAC__ASSERT(0 != chain); |
1248 | | |
1249 | | /* we assume we're already at the beginning of the file */ |
1250 | | |
1251 | 24.8k | switch(seek_to_first_metadata_block_cb_(handle, read_cb, seek_cb)) { |
1252 | 23.5k | case 0: |
1253 | 23.5k | break; |
1254 | 230 | case 1: |
1255 | 230 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_ERROR; |
1256 | 230 | return false; |
1257 | 0 | case 2: |
1258 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR; |
1259 | 0 | return false; |
1260 | 1.08k | case 3: |
1261 | 1.08k | chain->status = FLAC__METADATA_CHAIN_STATUS_NOT_A_FLAC_FILE; |
1262 | 1.08k | return false; |
1263 | 0 | default: |
1264 | 0 | FLAC__ASSERT(0); |
1265 | 0 | return false; |
1266 | 24.8k | } |
1267 | | |
1268 | 23.5k | { |
1269 | 23.5k | FLAC__int64 pos = tell_cb(handle); |
1270 | 23.5k | if(pos < 0) { |
1271 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_ERROR; |
1272 | 0 | return false; |
1273 | 0 | } |
1274 | 23.5k | chain->first_offset = (FLAC__off_t)pos; |
1275 | 23.5k | } |
1276 | | |
1277 | 0 | { |
1278 | 23.5k | FLAC__bool is_last; |
1279 | 23.5k | FLAC__MetadataType type; |
1280 | 23.5k | uint32_t length; |
1281 | | |
1282 | 1.30M | do { |
1283 | 1.30M | node = node_new_(); |
1284 | 1.30M | if(0 == node) { |
1285 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
1286 | 0 | return false; |
1287 | 0 | } |
1288 | | |
1289 | 1.30M | if(!read_metadata_block_header_cb_(handle, read_cb, &is_last, &type, &length)) { |
1290 | 368 | node_delete_(node); |
1291 | 368 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_ERROR; |
1292 | 368 | return false; |
1293 | 368 | } |
1294 | | |
1295 | 1.30M | node->data = FLAC__metadata_object_new(type); |
1296 | 1.30M | if(0 == node->data) { |
1297 | 11 | node_delete_(node); |
1298 | 11 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
1299 | 11 | return false; |
1300 | 11 | } |
1301 | | |
1302 | 1.30M | node->data->is_last = is_last; |
1303 | 1.30M | node->data->length = length; |
1304 | | |
1305 | 1.30M | chain->status = get_equivalent_status_(read_metadata_block_data_cb_(handle, read_cb, seek_cb, node->data)); |
1306 | 1.30M | if(chain->status != FLAC__METADATA_CHAIN_STATUS_OK) { |
1307 | 2.91k | node_delete_(node); |
1308 | 2.91k | return false; |
1309 | 2.91k | } |
1310 | 1.30M | chain_append_node_(chain, node); |
1311 | 1.30M | } while(!is_last); |
1312 | 23.5k | } |
1313 | | |
1314 | 20.2k | { |
1315 | 20.2k | FLAC__int64 pos = tell_cb(handle); |
1316 | 20.2k | if(pos < 0) { |
1317 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_ERROR; |
1318 | 0 | return false; |
1319 | 0 | } |
1320 | 20.2k | chain->last_offset = (FLAC__off_t)pos; |
1321 | 20.2k | } |
1322 | | |
1323 | 20.2k | if(chain->head->data->type != FLAC__METADATA_TYPE_STREAMINFO) { |
1324 | 101 | chain->status = FLAC__METADATA_CHAIN_STATUS_BAD_METADATA; |
1325 | 101 | return false; |
1326 | 101 | } |
1327 | | |
1328 | 20.1k | chain->initial_length = chain_calculate_length_(chain); |
1329 | | |
1330 | 20.1k | return true; |
1331 | 20.2k | } |
1332 | | |
1333 | | static FLAC__StreamDecoderReadStatus chain_read_ogg_read_cb_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data) |
1334 | 7.93k | { |
1335 | 7.93k | FLAC__Metadata_Chain *chain = (FLAC__Metadata_Chain*)client_data; |
1336 | 7.93k | (void)decoder; |
1337 | 7.93k | if(*bytes > 0 && chain->status == FLAC__METADATA_CHAIN_STATUS_OK) { |
1338 | 7.77k | *bytes = chain->read_cb(buffer, sizeof(FLAC__byte), *bytes, chain->handle); |
1339 | 7.77k | if(*bytes == 0) |
1340 | 2.41k | return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM; |
1341 | 5.35k | else |
1342 | 5.35k | return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE; |
1343 | 7.77k | } |
1344 | 157 | else |
1345 | 157 | return FLAC__STREAM_DECODER_READ_STATUS_ABORT; |
1346 | 7.93k | } |
1347 | | |
1348 | | static FLAC__StreamDecoderWriteStatus chain_read_ogg_write_cb_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) |
1349 | 0 | { |
1350 | 0 | (void)decoder, (void)frame, (void)buffer, (void)client_data; |
1351 | 0 | return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; |
1352 | 0 | } |
1353 | | |
1354 | | static void chain_read_ogg_metadata_cb_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data) |
1355 | 3.80k | { |
1356 | 3.80k | FLAC__Metadata_Chain *chain = (FLAC__Metadata_Chain*)client_data; |
1357 | 3.80k | FLAC__Metadata_Node *node; |
1358 | | |
1359 | 3.80k | (void)decoder; |
1360 | | |
1361 | 3.80k | node = node_new_(); |
1362 | 3.80k | if(0 == node) { |
1363 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
1364 | 0 | return; |
1365 | 0 | } |
1366 | | |
1367 | 3.80k | node->data = FLAC__metadata_object_clone(metadata); |
1368 | 3.80k | if(0 == node->data) { |
1369 | 194 | node_delete_(node); |
1370 | 194 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
1371 | 194 | return; |
1372 | 194 | } |
1373 | | |
1374 | 3.61k | chain_append_node_(chain, node); |
1375 | 3.61k | } |
1376 | | |
1377 | | static void chain_read_ogg_error_cb_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data) |
1378 | 1.56k | { |
1379 | 1.56k | FLAC__Metadata_Chain *chain = (FLAC__Metadata_Chain*)client_data; |
1380 | 1.56k | (void)decoder, (void)status; |
1381 | 1.56k | chain->status = FLAC__METADATA_CHAIN_STATUS_INTERNAL_ERROR; /*@@@ maybe needs better error code */ |
1382 | 1.56k | } |
1383 | | |
1384 | | static FLAC__bool chain_read_ogg_cb_(FLAC__Metadata_Chain *chain, FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb) |
1385 | 2.65k | { |
1386 | 2.65k | FLAC__StreamDecoder *decoder; |
1387 | | |
1388 | 2.65k | FLAC__ASSERT(0 != chain); |
1389 | | |
1390 | | /* we assume we're already at the beginning of the file */ |
1391 | | |
1392 | 2.65k | chain->handle = handle; |
1393 | 2.65k | chain->read_cb = read_cb; |
1394 | 2.65k | if(0 == (decoder = FLAC__stream_decoder_new())) { |
1395 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
1396 | 0 | return false; |
1397 | 0 | } |
1398 | 2.65k | FLAC__stream_decoder_set_metadata_respond_all(decoder); |
1399 | 2.65k | if(FLAC__stream_decoder_init_ogg_stream(decoder, chain_read_ogg_read_cb_, /*seek_callback=*/0, /*tell_callback=*/0, /*length_callback=*/0, /*eof_callback=*/0, chain_read_ogg_write_cb_, chain_read_ogg_metadata_cb_, chain_read_ogg_error_cb_, chain) != FLAC__STREAM_DECODER_INIT_STATUS_OK) { |
1400 | 0 | FLAC__stream_decoder_delete(decoder); |
1401 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_INTERNAL_ERROR; /*@@@ maybe needs better error code */ |
1402 | 0 | return false; |
1403 | 0 | } |
1404 | | |
1405 | 2.65k | chain->first_offset = 0; /*@@@ wrong; will need to be set correctly to implement metadata writing for Ogg FLAC */ |
1406 | | |
1407 | 2.65k | if(!FLAC__stream_decoder_process_until_end_of_metadata(decoder)) |
1408 | 2.60k | chain->status = FLAC__METADATA_CHAIN_STATUS_INTERNAL_ERROR; /*@@@ maybe needs better error code */ |
1409 | 2.65k | if(chain->status != FLAC__METADATA_CHAIN_STATUS_OK) { |
1410 | 2.61k | FLAC__stream_decoder_delete(decoder); |
1411 | 2.61k | return false; |
1412 | 2.61k | } |
1413 | | |
1414 | 35 | FLAC__stream_decoder_delete(decoder); |
1415 | | |
1416 | 35 | chain->last_offset = 0; /*@@@ wrong; will need to be set correctly to implement metadata writing for Ogg FLAC */ |
1417 | | |
1418 | 35 | chain->initial_length = chain_calculate_length_(chain); |
1419 | | |
1420 | 35 | if(chain->initial_length == 0 || chain->head->data->type != FLAC__METADATA_TYPE_STREAMINFO) { |
1421 | | /* Ogg FLAC file must have at least streaminfo and vorbis comment */ |
1422 | 34 | chain->status = FLAC__METADATA_CHAIN_STATUS_BAD_METADATA; |
1423 | 34 | return false; |
1424 | 34 | } |
1425 | | |
1426 | 1 | return true; |
1427 | 35 | } |
1428 | | |
1429 | | static FLAC__bool chain_rewrite_metadata_in_place_cb_(FLAC__Metadata_Chain *chain, FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, FLAC__IOCallback_Seek seek_cb) |
1430 | 3.00k | { |
1431 | 3.00k | FLAC__Metadata_Node *node; |
1432 | | |
1433 | 3.00k | FLAC__ASSERT(0 != chain); |
1434 | 3.00k | FLAC__ASSERT(0 != chain->head); |
1435 | | |
1436 | 3.00k | if(0 != seek_cb(handle, chain->first_offset, SEEK_SET)) { |
1437 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR; |
1438 | 0 | return false; |
1439 | 0 | } |
1440 | | |
1441 | 29.6k | for(node = chain->head; node; node = node->next) { |
1442 | 26.6k | if(!write_metadata_block_header_cb_(handle, write_cb, node->data)) { |
1443 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR; |
1444 | 0 | return false; |
1445 | 0 | } |
1446 | 26.6k | if(!write_metadata_block_data_cb_(handle, write_cb, node->data)) { |
1447 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR; |
1448 | 0 | return false; |
1449 | 0 | } |
1450 | 26.6k | } |
1451 | | |
1452 | | /*FLAC__ASSERT(fflush(), ftello() == chain->last_offset);*/ |
1453 | | |
1454 | 3.00k | chain->status = FLAC__METADATA_CHAIN_STATUS_OK; |
1455 | 3.00k | return true; |
1456 | 3.00k | } |
1457 | | |
1458 | | static FLAC__bool chain_rewrite_metadata_in_place_(FLAC__Metadata_Chain *chain) |
1459 | 3.00k | { |
1460 | 3.00k | FILE *file; |
1461 | 3.00k | FLAC__bool ret; |
1462 | | |
1463 | 3.00k | FLAC__ASSERT(0 != chain->filename); |
1464 | | |
1465 | 3.00k | if(0 == (file = flac_fopen(chain->filename, "r+b"))) { |
1466 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_ERROR_OPENING_FILE; |
1467 | 0 | return false; |
1468 | 0 | } |
1469 | | |
1470 | | /* chain_rewrite_metadata_in_place_cb_() sets chain->status for us */ |
1471 | 3.00k | ret = chain_rewrite_metadata_in_place_cb_(chain, (FLAC__IOHandle)file, (FLAC__IOCallback_Write)fwrite, fseek_wrapper_); |
1472 | | |
1473 | 3.00k | fclose(file); |
1474 | | |
1475 | 3.00k | return ret; |
1476 | 3.00k | } |
1477 | | |
1478 | | static FLAC__bool chain_rewrite_file_(FLAC__Metadata_Chain *chain, const char *tempfile_path_prefix) |
1479 | 2.61k | { |
1480 | 2.61k | FILE *f, *tempfile = NULL; |
1481 | 2.61k | char *tempfilename; |
1482 | 2.61k | FLAC__Metadata_SimpleIteratorStatus status; |
1483 | 2.61k | const FLAC__Metadata_Node *node; |
1484 | | |
1485 | 2.61k | FLAC__ASSERT(0 != chain); |
1486 | 2.61k | FLAC__ASSERT(0 != chain->filename); |
1487 | 2.61k | FLAC__ASSERT(0 != chain->head); |
1488 | | |
1489 | | /* copy the file prefix (data up to first metadata block */ |
1490 | 2.61k | if(0 == (f = flac_fopen(chain->filename, "rb"))) { |
1491 | 12 | chain->status = FLAC__METADATA_CHAIN_STATUS_ERROR_OPENING_FILE; |
1492 | 12 | return false; |
1493 | 12 | } |
1494 | 2.59k | if(!open_tempfile_(chain->filename, tempfile_path_prefix, &tempfile, &tempfilename, &status)) { |
1495 | 0 | chain->status = get_equivalent_status_(status); |
1496 | 0 | goto err; |
1497 | 0 | } |
1498 | 2.59k | if(!copy_n_bytes_from_file_(f, tempfile, chain->first_offset, &status)) { |
1499 | 0 | chain->status = get_equivalent_status_(status); |
1500 | 0 | goto err; |
1501 | 0 | } |
1502 | | |
1503 | | /* write the metadata */ |
1504 | 390k | for(node = chain->head; node; node = node->next) { |
1505 | 388k | if(!write_metadata_block_header_(tempfile, &status, node->data)) { |
1506 | 0 | chain->status = get_equivalent_status_(status); |
1507 | 0 | goto err; |
1508 | 0 | } |
1509 | 388k | if(!write_metadata_block_data_(tempfile, &status, node->data)) { |
1510 | 0 | chain->status = get_equivalent_status_(status); |
1511 | 0 | goto err; |
1512 | 0 | } |
1513 | 388k | } |
1514 | | /*FLAC__ASSERT(fflush(), ftello() == chain->last_offset);*/ |
1515 | | |
1516 | | /* copy the file postfix (everything after the metadata) */ |
1517 | 2.59k | if(0 != fseeko(f, chain->last_offset, SEEK_SET)) { |
1518 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR; |
1519 | 0 | goto err; |
1520 | 0 | } |
1521 | 2.59k | if(!copy_remaining_bytes_from_file_(f, tempfile, &status)) { |
1522 | 0 | chain->status = get_equivalent_status_(status); |
1523 | 0 | goto err; |
1524 | 0 | } |
1525 | | |
1526 | | /* move the tempfile on top of the original */ |
1527 | 2.59k | (void)fclose(f); |
1528 | 2.59k | if(!transport_tempfile_(chain->filename, &tempfile, &tempfilename, &status)) |
1529 | 0 | return false; |
1530 | | |
1531 | 2.59k | return true; |
1532 | | |
1533 | 0 | err: |
1534 | 0 | (void)fclose(f); |
1535 | 0 | cleanup_tempfile_(&tempfile, &tempfilename); |
1536 | 0 | return false; |
1537 | 2.59k | } |
1538 | | |
1539 | | /* assumes 'handle' is already at beginning of file */ |
1540 | | static FLAC__bool chain_rewrite_file_cb_(FLAC__Metadata_Chain *chain, FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb, FLAC__IOCallback_Eof eof_cb, FLAC__IOHandle temp_handle, FLAC__IOCallback_Write temp_write_cb) |
1541 | 0 | { |
1542 | 0 | FLAC__Metadata_SimpleIteratorStatus status; |
1543 | 0 | const FLAC__Metadata_Node *node; |
1544 | |
|
1545 | 0 | FLAC__ASSERT(0 != chain); |
1546 | 0 | FLAC__ASSERT(0 == chain->filename); |
1547 | 0 | FLAC__ASSERT(0 != chain->head); |
1548 | | |
1549 | | /* copy the file prefix (data up to first metadata block */ |
1550 | 0 | if(!copy_n_bytes_from_file_cb_(handle, read_cb, temp_handle, temp_write_cb, chain->first_offset, &status)) { |
1551 | 0 | chain->status = get_equivalent_status_(status); |
1552 | 0 | return false; |
1553 | 0 | } |
1554 | | |
1555 | | /* write the metadata */ |
1556 | 0 | for(node = chain->head; node; node = node->next) { |
1557 | 0 | if(!write_metadata_block_header_cb_(temp_handle, temp_write_cb, node->data)) { |
1558 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR; |
1559 | 0 | return false; |
1560 | 0 | } |
1561 | 0 | if(!write_metadata_block_data_cb_(temp_handle, temp_write_cb, node->data)) { |
1562 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR; |
1563 | 0 | return false; |
1564 | 0 | } |
1565 | 0 | } |
1566 | | /*FLAC__ASSERT(fflush(), ftello() == chain->last_offset);*/ |
1567 | | |
1568 | | /* copy the file postfix (everything after the metadata) */ |
1569 | 0 | if(0 != seek_cb(handle, chain->last_offset, SEEK_SET)) { |
1570 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR; |
1571 | 0 | return false; |
1572 | 0 | } |
1573 | 0 | if(!copy_remaining_bytes_from_file_cb_(handle, read_cb, eof_cb, temp_handle, temp_write_cb, &status)) { |
1574 | 0 | chain->status = get_equivalent_status_(status); |
1575 | 0 | return false; |
1576 | 0 | } |
1577 | | |
1578 | 0 | return true; |
1579 | 0 | } |
1580 | | |
1581 | | FLAC_API FLAC__Metadata_Chain *FLAC__metadata_chain_new(void) |
1582 | 37.3k | { |
1583 | 37.3k | FLAC__Metadata_Chain *chain = calloc(1, sizeof(FLAC__Metadata_Chain)); |
1584 | | |
1585 | 37.3k | if(0 != chain) |
1586 | 37.3k | chain_init_(chain); |
1587 | | |
1588 | 37.3k | return chain; |
1589 | 37.3k | } |
1590 | | |
1591 | | FLAC_API void FLAC__metadata_chain_delete(FLAC__Metadata_Chain *chain) |
1592 | 37.3k | { |
1593 | 37.3k | FLAC__ASSERT(0 != chain); |
1594 | | |
1595 | 37.3k | chain_clear_(chain); |
1596 | | |
1597 | 37.3k | free(chain); |
1598 | 37.3k | } |
1599 | | |
1600 | | FLAC_API FLAC__Metadata_ChainStatus FLAC__metadata_chain_status(FLAC__Metadata_Chain *chain) |
1601 | 15.0k | { |
1602 | 15.0k | FLAC__Metadata_ChainStatus status; |
1603 | | |
1604 | 15.0k | FLAC__ASSERT(0 != chain); |
1605 | | |
1606 | 15.0k | status = chain->status; |
1607 | 15.0k | chain->status = FLAC__METADATA_CHAIN_STATUS_OK; |
1608 | 15.0k | return status; |
1609 | 15.0k | } |
1610 | | |
1611 | | static FLAC__bool chain_read_(FLAC__Metadata_Chain *chain, const char *filename, FLAC__bool is_ogg) |
1612 | 37.3k | { |
1613 | 37.3k | FILE *file; |
1614 | 37.3k | FLAC__bool ret; |
1615 | | |
1616 | 37.3k | FLAC__ASSERT(0 != chain); |
1617 | 37.3k | FLAC__ASSERT(0 != filename); |
1618 | | |
1619 | 37.3k | chain_clear_(chain); |
1620 | | |
1621 | 37.3k | if(0 == (chain->filename = strdup(filename))) { |
1622 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
1623 | 0 | return false; |
1624 | 0 | } |
1625 | | |
1626 | 37.3k | chain->is_ogg = is_ogg; |
1627 | | |
1628 | 37.3k | if(0 == (file = flac_fopen(filename, "rb"))) { |
1629 | 9.87k | chain->status = FLAC__METADATA_CHAIN_STATUS_ERROR_OPENING_FILE; |
1630 | 9.87k | return false; |
1631 | 9.87k | } |
1632 | | |
1633 | | /* the function also sets chain->status for us */ |
1634 | 27.4k | ret = is_ogg? |
1635 | 2.65k | chain_read_ogg_cb_(chain, file, (FLAC__IOCallback_Read)fread) : |
1636 | 27.4k | chain_read_cb_(chain, file, (FLAC__IOCallback_Read)fread, fseek_wrapper_, ftell_wrapper_) |
1637 | 27.4k | ; |
1638 | | |
1639 | 27.4k | fclose(file); |
1640 | | |
1641 | 27.4k | return ret; |
1642 | 37.3k | } |
1643 | | |
1644 | | FLAC_API FLAC__bool FLAC__metadata_chain_read(FLAC__Metadata_Chain *chain, const char *filename) |
1645 | 34.6k | { |
1646 | 34.6k | return chain_read_(chain, filename, /*is_ogg=*/false); |
1647 | 34.6k | } |
1648 | | |
1649 | | /*@@@@add to tests*/ |
1650 | | FLAC_API FLAC__bool FLAC__metadata_chain_read_ogg(FLAC__Metadata_Chain *chain, const char *filename) |
1651 | 2.75k | { |
1652 | 2.75k | return chain_read_(chain, filename, /*is_ogg=*/true); |
1653 | 2.75k | } |
1654 | | |
1655 | | static FLAC__bool chain_read_with_callbacks_(FLAC__Metadata_Chain *chain, FLAC__IOHandle handle, FLAC__IOCallbacks callbacks, FLAC__bool is_ogg) |
1656 | 0 | { |
1657 | 0 | FLAC__bool ret; |
1658 | |
|
1659 | 0 | FLAC__ASSERT(0 != chain); |
1660 | |
|
1661 | 0 | chain_clear_(chain); |
1662 | |
|
1663 | 0 | if (0 == callbacks.read || 0 == callbacks.seek || 0 == callbacks.tell) { |
1664 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_INVALID_CALLBACKS; |
1665 | 0 | return false; |
1666 | 0 | } |
1667 | | |
1668 | 0 | chain->is_ogg = is_ogg; |
1669 | | |
1670 | | /* rewind */ |
1671 | 0 | if(0 != callbacks.seek(handle, 0, SEEK_SET)) { |
1672 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR; |
1673 | 0 | return false; |
1674 | 0 | } |
1675 | | |
1676 | | /* the function also sets chain->status for us */ |
1677 | 0 | ret = is_ogg? |
1678 | 0 | chain_read_ogg_cb_(chain, handle, callbacks.read) : |
1679 | 0 | chain_read_cb_(chain, handle, callbacks.read, callbacks.seek, callbacks.tell) |
1680 | 0 | ; |
1681 | |
|
1682 | 0 | return ret; |
1683 | 0 | } |
1684 | | |
1685 | | FLAC_API FLAC__bool FLAC__metadata_chain_read_with_callbacks(FLAC__Metadata_Chain *chain, FLAC__IOHandle handle, FLAC__IOCallbacks callbacks) |
1686 | 0 | { |
1687 | 0 | return chain_read_with_callbacks_(chain, handle, callbacks, /*is_ogg=*/false); |
1688 | 0 | } |
1689 | | |
1690 | | /*@@@@add to tests*/ |
1691 | | FLAC_API FLAC__bool FLAC__metadata_chain_read_ogg_with_callbacks(FLAC__Metadata_Chain *chain, FLAC__IOHandle handle, FLAC__IOCallbacks callbacks) |
1692 | 0 | { |
1693 | 0 | return chain_read_with_callbacks_(chain, handle, callbacks, /*is_ogg=*/true); |
1694 | 0 | } |
1695 | | |
1696 | | typedef enum { |
1697 | | LBS_NONE = 0, |
1698 | | LBS_SIZE_CHANGED, |
1699 | | LBS_BLOCK_ADDED, |
1700 | | LBS_BLOCK_REMOVED |
1701 | | } LastBlockState; |
1702 | | |
1703 | | #if defined(_MSC_VER) |
1704 | | // silence three MSVC warnings 'conversion from 'conversion from 'const __int64' to 'uint32_t', possible loss of data' |
1705 | | #pragma warning ( disable : 4244 ) |
1706 | | #endif |
1707 | | |
1708 | | FLAC_API FLAC__bool FLAC__metadata_chain_check_if_tempfile_needed(FLAC__Metadata_Chain *chain, FLAC__bool use_padding) |
1709 | 2.42k | { |
1710 | | /* This does all the same checks that are in chain_prepare_for_write_() |
1711 | | * but doesn't actually alter the chain. Make sure to update the logic |
1712 | | * here if chain_prepare_for_write_() changes. |
1713 | | */ |
1714 | 2.42k | FLAC__off_t current_length; |
1715 | 2.42k | LastBlockState lbs_state = LBS_NONE; |
1716 | 2.42k | uint32_t lbs_size = 0; |
1717 | | |
1718 | 2.42k | FLAC__ASSERT(0 != chain); |
1719 | | |
1720 | 2.42k | current_length = chain_calculate_length_(chain); |
1721 | | |
1722 | 2.42k | if(use_padding) { |
1723 | 1.12k | const FLAC__Metadata_Node * const node = chain->tail; |
1724 | | /* if the metadata shrank and the last block is padding, we just extend the last padding block */ |
1725 | 1.12k | if(current_length < chain->initial_length && node->data->type == FLAC__METADATA_TYPE_PADDING) { |
1726 | 6 | lbs_state = LBS_SIZE_CHANGED; |
1727 | 6 | lbs_size = node->data->length + (chain->initial_length - current_length); |
1728 | 6 | } |
1729 | | /* if the metadata shrank more than 4 bytes then there's room to add another padding block */ |
1730 | 1.11k | else if(current_length + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH <= chain->initial_length) { |
1731 | 97 | lbs_state = LBS_BLOCK_ADDED; |
1732 | 97 | lbs_size = chain->initial_length - (current_length + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH); |
1733 | 97 | } |
1734 | | /* if the metadata grew but the last block is padding, try cutting the padding to restore the original length so we don't have to rewrite the whole file */ |
1735 | 1.02k | else if(current_length > chain->initial_length) { |
1736 | 211 | const FLAC__off_t delta = current_length - chain->initial_length; |
1737 | 211 | if(node->data->type == FLAC__METADATA_TYPE_PADDING) { |
1738 | | /* if the delta is exactly the size of the last padding block, remove the padding block */ |
1739 | 113 | if((FLAC__off_t)node->data->length + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH == delta) { |
1740 | 11 | lbs_state = LBS_BLOCK_REMOVED; |
1741 | 11 | lbs_size = 0; |
1742 | 11 | } |
1743 | | /* if there is at least 'delta' bytes of padding, trim the padding down */ |
1744 | 102 | else if((FLAC__off_t)node->data->length >= delta) { |
1745 | 81 | lbs_state = LBS_SIZE_CHANGED; |
1746 | 81 | lbs_size = node->data->length - delta; |
1747 | 81 | } |
1748 | 113 | } |
1749 | 211 | } |
1750 | 1.12k | } |
1751 | | |
1752 | 2.42k | current_length = 0; |
1753 | | /* check sizes of all metadata blocks; reduce padding size if necessary */ |
1754 | 2.42k | { |
1755 | 2.42k | const FLAC__Metadata_Node *node; |
1756 | 26.5k | for(node = chain->head; node; node = node->next) { |
1757 | 24.2k | uint32_t block_len = node->data->length; |
1758 | 24.2k | if(node == chain->tail) { |
1759 | 2.37k | if(lbs_state == LBS_BLOCK_REMOVED) |
1760 | 11 | continue; |
1761 | 2.36k | else if(lbs_state == LBS_SIZE_CHANGED) |
1762 | 87 | block_len = lbs_size; |
1763 | 2.37k | } |
1764 | 24.2k | if(block_len >= (1u << FLAC__STREAM_METADATA_LENGTH_LEN)) { |
1765 | 112 | if(node->data->type == FLAC__METADATA_TYPE_PADDING) |
1766 | 60 | block_len = (1u << FLAC__STREAM_METADATA_LENGTH_LEN) - 1; |
1767 | 52 | else |
1768 | 52 | return false /* the return value doesn't matter */; |
1769 | 112 | } |
1770 | 24.1k | current_length += (FLAC__STREAM_METADATA_HEADER_LENGTH + block_len); |
1771 | 24.1k | } |
1772 | | |
1773 | 2.36k | if(lbs_state == LBS_BLOCK_ADDED) { |
1774 | | /* test added padding block */ |
1775 | 97 | uint32_t block_len = lbs_size; |
1776 | 97 | if(block_len >= (1u << FLAC__STREAM_METADATA_LENGTH_LEN)) |
1777 | 21 | block_len = (1u << FLAC__STREAM_METADATA_LENGTH_LEN) - 1; |
1778 | 97 | current_length += (FLAC__STREAM_METADATA_HEADER_LENGTH + block_len); |
1779 | 97 | } |
1780 | 2.36k | } |
1781 | | |
1782 | 0 | return (current_length != chain->initial_length); |
1783 | 2.42k | } |
1784 | | |
1785 | | #if defined(_MSC_VER) |
1786 | | #pragma warning ( default : 4244 ) |
1787 | | #endif |
1788 | | |
1789 | | FLAC_API FLAC__bool FLAC__metadata_chain_write(FLAC__Metadata_Chain *chain, FLAC__bool use_padding, FLAC__bool preserve_file_stats) |
1790 | 5.66k | { |
1791 | 5.66k | struct flac_stat_s stats; |
1792 | 5.66k | const char *tempfile_path_prefix = 0; |
1793 | 5.66k | FLAC__off_t current_length; |
1794 | | |
1795 | 5.66k | FLAC__ASSERT(0 != chain); |
1796 | | |
1797 | 5.66k | if (chain->is_ogg) { /* cannot write back to Ogg FLAC yet */ |
1798 | 1 | chain->status = FLAC__METADATA_CHAIN_STATUS_INTERNAL_ERROR; |
1799 | 1 | return false; |
1800 | 1 | } |
1801 | | |
1802 | 5.66k | if (0 == chain->filename) { |
1803 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_WRITE_MISMATCH; |
1804 | 0 | return false; |
1805 | 0 | } |
1806 | | |
1807 | 5.66k | current_length = chain_prepare_for_write_(chain, use_padding); |
1808 | | |
1809 | | /* a return value of 0 means there was an error; chain->status is already set */ |
1810 | 5.66k | if (0 == current_length) |
1811 | 52 | return false; |
1812 | | |
1813 | 5.61k | if(preserve_file_stats) |
1814 | 5 | get_file_stats_(chain->filename, &stats); |
1815 | | |
1816 | 5.61k | if(current_length == chain->initial_length) { |
1817 | 3.00k | if(!chain_rewrite_metadata_in_place_(chain)) |
1818 | 0 | return false; |
1819 | 3.00k | } |
1820 | 2.61k | else { |
1821 | 2.61k | if(!chain_rewrite_file_(chain, tempfile_path_prefix)) |
1822 | 12 | return false; |
1823 | | |
1824 | | /* recompute lengths and offsets */ |
1825 | 2.59k | { |
1826 | 2.59k | const FLAC__Metadata_Node *node; |
1827 | 2.59k | chain->initial_length = current_length; |
1828 | 2.59k | chain->last_offset = chain->first_offset; |
1829 | 390k | for(node = chain->head; node; node = node->next) |
1830 | 388k | chain->last_offset += (FLAC__STREAM_METADATA_HEADER_LENGTH + node->data->length); |
1831 | 2.59k | } |
1832 | 2.59k | } |
1833 | | |
1834 | 5.60k | if(preserve_file_stats) |
1835 | 5 | set_file_stats_(chain->filename, &stats); |
1836 | | |
1837 | 5.60k | return true; |
1838 | 5.61k | } |
1839 | | |
1840 | | FLAC_API FLAC__bool FLAC__metadata_chain_write_with_callbacks(FLAC__Metadata_Chain *chain, FLAC__bool use_padding, FLAC__IOHandle handle, FLAC__IOCallbacks callbacks) |
1841 | 0 | { |
1842 | 0 | FLAC__off_t current_length; |
1843 | |
|
1844 | 0 | FLAC__ASSERT(0 != chain); |
1845 | |
|
1846 | 0 | if (chain->is_ogg) { /* cannot write back to Ogg FLAC yet */ |
1847 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_INTERNAL_ERROR; |
1848 | 0 | return false; |
1849 | 0 | } |
1850 | | |
1851 | 0 | if (0 != chain->filename) { |
1852 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_WRITE_MISMATCH; |
1853 | 0 | return false; |
1854 | 0 | } |
1855 | | |
1856 | 0 | if (0 == callbacks.write || 0 == callbacks.seek) { |
1857 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_INVALID_CALLBACKS; |
1858 | 0 | return false; |
1859 | 0 | } |
1860 | | |
1861 | 0 | if (FLAC__metadata_chain_check_if_tempfile_needed(chain, use_padding)) { |
1862 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_WRONG_WRITE_CALL; |
1863 | 0 | return false; |
1864 | 0 | } |
1865 | | |
1866 | 0 | current_length = chain_prepare_for_write_(chain, use_padding); |
1867 | | |
1868 | | /* a return value of 0 means there was an error; chain->status is already set */ |
1869 | 0 | if (0 == current_length) |
1870 | 0 | return false; |
1871 | | |
1872 | 0 | FLAC__ASSERT(current_length == chain->initial_length); |
1873 | |
|
1874 | 0 | return chain_rewrite_metadata_in_place_cb_(chain, handle, callbacks.write, callbacks.seek); |
1875 | 0 | } |
1876 | | |
1877 | | FLAC_API FLAC__bool FLAC__metadata_chain_write_with_callbacks_and_tempfile(FLAC__Metadata_Chain *chain, FLAC__bool use_padding, FLAC__IOHandle handle, FLAC__IOCallbacks callbacks, FLAC__IOHandle temp_handle, FLAC__IOCallbacks temp_callbacks) |
1878 | 0 | { |
1879 | 0 | FLAC__off_t current_length; |
1880 | |
|
1881 | 0 | FLAC__ASSERT(0 != chain); |
1882 | |
|
1883 | 0 | if (chain->is_ogg) { /* cannot write back to Ogg FLAC yet */ |
1884 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_INTERNAL_ERROR; |
1885 | 0 | return false; |
1886 | 0 | } |
1887 | | |
1888 | 0 | if (0 != chain->filename) { |
1889 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_READ_WRITE_MISMATCH; |
1890 | 0 | return false; |
1891 | 0 | } |
1892 | | |
1893 | 0 | if (0 == callbacks.read || 0 == callbacks.seek || 0 == callbacks.eof) { |
1894 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_INVALID_CALLBACKS; |
1895 | 0 | return false; |
1896 | 0 | } |
1897 | 0 | if (0 == temp_callbacks.write) { |
1898 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_INVALID_CALLBACKS; |
1899 | 0 | return false; |
1900 | 0 | } |
1901 | | |
1902 | 0 | if (!FLAC__metadata_chain_check_if_tempfile_needed(chain, use_padding)) { |
1903 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_WRONG_WRITE_CALL; |
1904 | 0 | return false; |
1905 | 0 | } |
1906 | | |
1907 | 0 | current_length = chain_prepare_for_write_(chain, use_padding); |
1908 | | |
1909 | | /* a return value of 0 means there was an error; chain->status is already set */ |
1910 | 0 | if (0 == current_length) |
1911 | 0 | return false; |
1912 | | |
1913 | 0 | FLAC__ASSERT(current_length != chain->initial_length); |
1914 | | |
1915 | | /* rewind */ |
1916 | 0 | if(0 != callbacks.seek(handle, 0, SEEK_SET)) { |
1917 | 0 | chain->status = FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR; |
1918 | 0 | return false; |
1919 | 0 | } |
1920 | | |
1921 | 0 | if(!chain_rewrite_file_cb_(chain, handle, callbacks.read, callbacks.seek, callbacks.eof, temp_handle, temp_callbacks.write)) |
1922 | 0 | return false; |
1923 | | |
1924 | | /* recompute lengths and offsets */ |
1925 | 0 | { |
1926 | 0 | const FLAC__Metadata_Node *node; |
1927 | 0 | chain->initial_length = current_length; |
1928 | 0 | chain->last_offset = chain->first_offset; |
1929 | 0 | for(node = chain->head; node; node = node->next) |
1930 | 0 | chain->last_offset += (FLAC__STREAM_METADATA_HEADER_LENGTH + node->data->length); |
1931 | 0 | } |
1932 | |
|
1933 | 0 | return true; |
1934 | 0 | } |
1935 | | |
1936 | | FLAC_API void FLAC__metadata_chain_merge_padding(FLAC__Metadata_Chain *chain) |
1937 | 7.97k | { |
1938 | 7.97k | FLAC__Metadata_Node *node; |
1939 | | |
1940 | 7.97k | FLAC__ASSERT(0 != chain); |
1941 | | |
1942 | 164k | for(node = chain->head; node; ) { |
1943 | 156k | if(!chain_merge_adjacent_padding_(chain, node)) |
1944 | 65.9k | node = node->next; |
1945 | 156k | } |
1946 | 7.97k | } |
1947 | | |
1948 | | FLAC_API void FLAC__metadata_chain_sort_padding(FLAC__Metadata_Chain *chain) |
1949 | 5.38k | { |
1950 | 5.38k | FLAC__Metadata_Node *node, *save; |
1951 | 5.38k | uint32_t i; |
1952 | | |
1953 | 5.38k | FLAC__ASSERT(0 != chain); |
1954 | | |
1955 | | /* |
1956 | | * Don't try and be too smart... this simple algo is good enough for |
1957 | | * the small number of nodes that we deal with. |
1958 | | */ |
1959 | 135k | for(i = 0, node = chain->head; i < chain->nodes; i++) { |
1960 | 129k | if(node->data->type == FLAC__METADATA_TYPE_PADDING) { |
1961 | 91.1k | save = node->next; |
1962 | 91.1k | chain_remove_node_(chain, node); |
1963 | 91.1k | chain_append_node_(chain, node); |
1964 | 91.1k | node = save; |
1965 | 91.1k | } |
1966 | 38.6k | else { |
1967 | 38.6k | node = node->next; |
1968 | 38.6k | } |
1969 | 129k | } |
1970 | | |
1971 | 5.38k | FLAC__metadata_chain_merge_padding(chain); |
1972 | 5.38k | } |
1973 | | |
1974 | | |
1975 | | FLAC_API FLAC__Metadata_Iterator *FLAC__metadata_iterator_new(void) |
1976 | 22.0k | { |
1977 | 22.0k | FLAC__Metadata_Iterator *iterator = calloc(1, sizeof(FLAC__Metadata_Iterator)); |
1978 | | |
1979 | | /* calloc() implies: |
1980 | | iterator->current = 0; |
1981 | | iterator->chain = 0; |
1982 | | */ |
1983 | | |
1984 | 22.0k | return iterator; |
1985 | 22.0k | } |
1986 | | |
1987 | | FLAC_API void FLAC__metadata_iterator_delete(FLAC__Metadata_Iterator *iterator) |
1988 | 22.0k | { |
1989 | 22.0k | FLAC__ASSERT(0 != iterator); |
1990 | | |
1991 | 22.0k | free(iterator); |
1992 | 22.0k | } |
1993 | | |
1994 | | FLAC_API void FLAC__metadata_iterator_init(FLAC__Metadata_Iterator *iterator, FLAC__Metadata_Chain *chain) |
1995 | 17.9k | { |
1996 | 17.9k | FLAC__ASSERT(0 != iterator); |
1997 | 17.9k | FLAC__ASSERT(0 != chain); |
1998 | 17.9k | FLAC__ASSERT(0 != chain->head); |
1999 | | |
2000 | 17.9k | iterator->chain = chain; |
2001 | 17.9k | iterator->current = chain->head; |
2002 | 17.9k | } |
2003 | | |
2004 | | FLAC_API FLAC__bool FLAC__metadata_iterator_next(FLAC__Metadata_Iterator *iterator) |
2005 | 608k | { |
2006 | 608k | FLAC__ASSERT(0 != iterator); |
2007 | | |
2008 | 608k | if(0 == iterator->current || 0 == iterator->current->next) |
2009 | 11.4k | return false; |
2010 | | |
2011 | 597k | iterator->current = iterator->current->next; |
2012 | 597k | return true; |
2013 | 608k | } |
2014 | | |
2015 | | FLAC_API FLAC__bool FLAC__metadata_iterator_prev(FLAC__Metadata_Iterator *iterator) |
2016 | 5.35k | { |
2017 | 5.35k | FLAC__ASSERT(0 != iterator); |
2018 | | |
2019 | 5.35k | if(0 == iterator->current || 0 == iterator->current->prev) |
2020 | 2.73k | return false; |
2021 | | |
2022 | 2.61k | iterator->current = iterator->current->prev; |
2023 | 2.61k | return true; |
2024 | 5.35k | } |
2025 | | |
2026 | | FLAC_API FLAC__MetadataType FLAC__metadata_iterator_get_block_type(const FLAC__Metadata_Iterator *iterator) |
2027 | 7.89k | { |
2028 | 7.89k | FLAC__ASSERT(0 != iterator); |
2029 | 7.89k | FLAC__ASSERT(0 != iterator->current); |
2030 | 7.89k | FLAC__ASSERT(0 != iterator->current->data); |
2031 | | |
2032 | 7.89k | return iterator->current->data->type; |
2033 | 7.89k | } |
2034 | | |
2035 | | FLAC_API FLAC__StreamMetadata *FLAC__metadata_iterator_get_block(FLAC__Metadata_Iterator *iterator) |
2036 | 161k | { |
2037 | 161k | FLAC__ASSERT(0 != iterator); |
2038 | 161k | FLAC__ASSERT(0 != iterator->current); |
2039 | | |
2040 | 161k | return iterator->current->data; |
2041 | 161k | } |
2042 | | |
2043 | | FLAC_API FLAC__bool FLAC__metadata_iterator_set_block(FLAC__Metadata_Iterator *iterator, FLAC__StreamMetadata *block) |
2044 | 208 | { |
2045 | 208 | FLAC__ASSERT(0 != iterator); |
2046 | 208 | FLAC__ASSERT(0 != block); |
2047 | 208 | return FLAC__metadata_iterator_delete_block(iterator, false) && FLAC__metadata_iterator_insert_block_after(iterator, block); |
2048 | 208 | } |
2049 | | |
2050 | | FLAC_API FLAC__bool FLAC__metadata_iterator_delete_block(FLAC__Metadata_Iterator *iterator, FLAC__bool replace_with_padding) |
2051 | 89.0k | { |
2052 | 89.0k | FLAC__Metadata_Node *save; |
2053 | | |
2054 | 89.0k | FLAC__ASSERT(0 != iterator); |
2055 | 89.0k | FLAC__ASSERT(0 != iterator->current); |
2056 | | |
2057 | 89.0k | if(0 == iterator->current->prev) { |
2058 | 74 | FLAC__ASSERT(iterator->current->data->type == FLAC__METADATA_TYPE_STREAMINFO); |
2059 | 74 | return false; |
2060 | 74 | } |
2061 | | |
2062 | 88.9k | save = iterator->current->prev; |
2063 | | |
2064 | 88.9k | if(replace_with_padding) { |
2065 | 88.4k | FLAC__metadata_object_delete_data(iterator->current->data); |
2066 | 88.4k | iterator->current->data->type = FLAC__METADATA_TYPE_PADDING; |
2067 | 88.4k | } |
2068 | 523 | else { |
2069 | 523 | chain_delete_node_(iterator->chain, iterator->current); |
2070 | 523 | } |
2071 | | |
2072 | 88.9k | iterator->current = save; |
2073 | 88.9k | return true; |
2074 | 89.0k | } |
2075 | | |
2076 | | FLAC_API FLAC__bool FLAC__metadata_iterator_insert_block_before(FLAC__Metadata_Iterator *iterator, FLAC__StreamMetadata *block) |
2077 | 407 | { |
2078 | 407 | FLAC__Metadata_Node *node; |
2079 | | |
2080 | 407 | FLAC__ASSERT(0 != iterator); |
2081 | 407 | FLAC__ASSERT(0 != iterator->current); |
2082 | 407 | FLAC__ASSERT(0 != block); |
2083 | | |
2084 | 407 | if(block->type == FLAC__METADATA_TYPE_STREAMINFO) |
2085 | 24 | return false; |
2086 | | |
2087 | 383 | if(0 == iterator->current->prev) { |
2088 | 16 | FLAC__ASSERT(iterator->current->data->type == FLAC__METADATA_TYPE_STREAMINFO); |
2089 | 16 | return false; |
2090 | 16 | } |
2091 | | |
2092 | 367 | if(0 == (node = node_new_())) |
2093 | 0 | return false; |
2094 | | |
2095 | 367 | node->data = block; |
2096 | 367 | iterator_insert_node_(iterator, node); |
2097 | 367 | iterator->current = node; |
2098 | 367 | return true; |
2099 | 367 | } |
2100 | | |
2101 | | FLAC_API FLAC__bool FLAC__metadata_iterator_insert_block_after(FLAC__Metadata_Iterator *iterator, FLAC__StreamMetadata *block) |
2102 | 9.49k | { |
2103 | 9.49k | FLAC__Metadata_Node *node; |
2104 | | |
2105 | 9.49k | FLAC__ASSERT(0 != iterator); |
2106 | 9.49k | FLAC__ASSERT(0 != iterator->current); |
2107 | 9.49k | FLAC__ASSERT(0 != block); |
2108 | | |
2109 | 9.49k | if(block->type == FLAC__METADATA_TYPE_STREAMINFO) |
2110 | 41 | return false; |
2111 | | |
2112 | 9.45k | if(0 == (node = node_new_())) |
2113 | 0 | return false; |
2114 | | |
2115 | 9.45k | node->data = block; |
2116 | 9.45k | iterator_insert_node_after_(iterator, node); |
2117 | 9.45k | iterator->current = node; |
2118 | 9.45k | return true; |
2119 | 9.45k | } |
2120 | | |
2121 | | |
2122 | | /**************************************************************************** |
2123 | | * |
2124 | | * Local function definitions |
2125 | | * |
2126 | | ***************************************************************************/ |
2127 | | |
2128 | | void pack_uint32_(FLAC__uint32 val, FLAC__byte *b, uint32_t bytes) |
2129 | 24.9M | { |
2130 | 24.9M | uint32_t i; |
2131 | | |
2132 | 24.9M | b += bytes; |
2133 | | |
2134 | 76.4M | for(i = 0; i < bytes; i++) { |
2135 | 51.4M | *(--b) = (FLAC__byte)(val & 0xff); |
2136 | 51.4M | val >>= 8; |
2137 | 51.4M | } |
2138 | 24.9M | } |
2139 | | |
2140 | | void pack_uint32_little_endian_(FLAC__uint32 val, FLAC__byte *b, uint32_t bytes) |
2141 | 932k | { |
2142 | 932k | uint32_t i; |
2143 | | |
2144 | 4.66M | for(i = 0; i < bytes; i++) { |
2145 | 3.72M | *(b++) = (FLAC__byte)(val & 0xff); |
2146 | 3.72M | val >>= 8; |
2147 | 3.72M | } |
2148 | 932k | } |
2149 | | |
2150 | | void pack_uint64_(FLAC__uint64 val, FLAC__byte *b, uint32_t bytes) |
2151 | 45.6M | { |
2152 | 45.6M | uint32_t i; |
2153 | | |
2154 | 45.6M | b += bytes; |
2155 | | |
2156 | 411M | for(i = 0; i < bytes; i++) { |
2157 | 365M | *(--b) = (FLAC__byte)(val & 0xff); |
2158 | 365M | val >>= 8; |
2159 | 365M | } |
2160 | 45.6M | } |
2161 | | |
2162 | | FLAC__uint32 unpack_uint32_(FLAC__byte *b, uint32_t bytes) |
2163 | 24.4M | { |
2164 | 24.4M | FLAC__uint32 ret = 0; |
2165 | 24.4M | uint32_t i; |
2166 | | |
2167 | 76.6M | for(i = 0; i < bytes; i++) |
2168 | 52.2M | ret = (ret << 8) | (FLAC__uint32)(*b++); |
2169 | | |
2170 | 24.4M | return ret; |
2171 | 24.4M | } |
2172 | | |
2173 | | FLAC__uint32 unpack_uint32_little_endian_(FLAC__byte *b, uint32_t bytes) |
2174 | 1.37M | { |
2175 | 1.37M | FLAC__uint32 ret = 0; |
2176 | 1.37M | uint32_t i; |
2177 | | |
2178 | 1.37M | b += bytes; |
2179 | | |
2180 | 6.87M | for(i = 0; i < bytes; i++) |
2181 | 5.49M | ret = (ret << 8) | (FLAC__uint32)(*--b); |
2182 | | |
2183 | 1.37M | return ret; |
2184 | 1.37M | } |
2185 | | |
2186 | | FLAC__uint64 unpack_uint64_(FLAC__byte *b, uint32_t bytes) |
2187 | 35.4M | { |
2188 | 35.4M | FLAC__uint64 ret = 0; |
2189 | 35.4M | uint32_t i; |
2190 | | |
2191 | 314M | for(i = 0; i < bytes; i++) |
2192 | 279M | ret = (ret << 8) | (FLAC__uint64)(*b++); |
2193 | | |
2194 | 35.4M | return ret; |
2195 | 35.4M | } |
2196 | | |
2197 | | FLAC__bool read_metadata_block_header_(FLAC__Metadata_SimpleIterator *iterator) |
2198 | 145k | { |
2199 | 145k | FLAC__ASSERT(0 != iterator); |
2200 | 145k | FLAC__ASSERT(0 != iterator->file); |
2201 | | |
2202 | 145k | if(!read_metadata_block_header_cb_((FLAC__IOHandle)iterator->file, (FLAC__IOCallback_Read)fread, &iterator->is_last, &iterator->type, &iterator->length)) { |
2203 | 3.60k | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2204 | 3.60k | return false; |
2205 | 3.60k | } |
2206 | | |
2207 | 142k | return true; |
2208 | 145k | } |
2209 | | |
2210 | | FLAC__bool read_metadata_block_data_(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block) |
2211 | 5.70k | { |
2212 | 5.70k | FLAC__ASSERT(0 != iterator); |
2213 | 5.70k | FLAC__ASSERT(0 != iterator->file); |
2214 | | |
2215 | 5.70k | iterator->status = read_metadata_block_data_cb_((FLAC__IOHandle)iterator->file, (FLAC__IOCallback_Read)fread, fseek_wrapper_, block); |
2216 | | |
2217 | 5.70k | return (iterator->status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK); |
2218 | 5.70k | } |
2219 | | |
2220 | | FLAC__bool read_metadata_block_header_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__bool *is_last, FLAC__MetadataType *type, uint32_t *length) |
2221 | 1.45M | { |
2222 | 1.45M | FLAC__byte raw_header[FLAC__STREAM_METADATA_HEADER_LENGTH]; |
2223 | | |
2224 | 1.45M | if(read_cb(raw_header, 1, FLAC__STREAM_METADATA_HEADER_LENGTH, handle) != FLAC__STREAM_METADATA_HEADER_LENGTH) |
2225 | 3.97k | return false; |
2226 | | |
2227 | 1.45M | *is_last = raw_header[0] & 0x80? true : false; |
2228 | 1.45M | *type = (FLAC__MetadataType)(raw_header[0] & 0x7f); |
2229 | 1.45M | *length = unpack_uint32_(raw_header + 1, 3); |
2230 | | |
2231 | | /* Note that we don't check: |
2232 | | * if(iterator->type >= FLAC__METADATA_TYPE_UNDEFINED) |
2233 | | * we just will read in an opaque block |
2234 | | */ |
2235 | | |
2236 | 1.45M | return true; |
2237 | 1.45M | } |
2238 | | |
2239 | | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb, FLAC__StreamMetadata *block) |
2240 | 1.31M | { |
2241 | 1.31M | switch(block->type) { |
2242 | 1.10M | case FLAC__METADATA_TYPE_STREAMINFO: |
2243 | 1.10M | return read_metadata_block_data_streaminfo_cb_(handle, read_cb, &block->data.stream_info); |
2244 | 50.3k | case FLAC__METADATA_TYPE_PADDING: |
2245 | 50.3k | return read_metadata_block_data_padding_cb_(handle, seek_cb, &block->data.padding, block->length); |
2246 | 3.86k | case FLAC__METADATA_TYPE_APPLICATION: |
2247 | 3.86k | return read_metadata_block_data_application_cb_(handle, read_cb, &block->data.application, block->length); |
2248 | 111k | case FLAC__METADATA_TYPE_SEEKTABLE: |
2249 | 111k | return read_metadata_block_data_seektable_cb_(handle, read_cb, &block->data.seek_table, block->length); |
2250 | 8.96k | case FLAC__METADATA_TYPE_VORBIS_COMMENT: |
2251 | 8.96k | return read_metadata_block_data_vorbis_comment_cb_(handle, read_cb, seek_cb, &block->data.vorbis_comment, block->length); |
2252 | 3.99k | case FLAC__METADATA_TYPE_CUESHEET: |
2253 | 3.99k | return read_metadata_block_data_cuesheet_cb_(handle, read_cb, &block->data.cue_sheet); |
2254 | 8.35k | case FLAC__METADATA_TYPE_PICTURE: |
2255 | 8.35k | return read_metadata_block_data_picture_cb_(handle, read_cb, &block->data.picture); |
2256 | 20.7k | default: |
2257 | 20.7k | return read_metadata_block_data_unknown_cb_(handle, read_cb, &block->data.unknown, block->length); |
2258 | 1.31M | } |
2259 | 1.31M | } |
2260 | | |
2261 | | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_streaminfo_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_StreamInfo *block) |
2262 | 1.10M | { |
2263 | 1.10M | FLAC__byte buffer[FLAC__STREAM_METADATA_STREAMINFO_LENGTH], *b; |
2264 | | |
2265 | 1.10M | if(read_cb(buffer, 1, FLAC__STREAM_METADATA_STREAMINFO_LENGTH, handle) != FLAC__STREAM_METADATA_STREAMINFO_LENGTH) |
2266 | 420 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2267 | | |
2268 | 1.10M | b = buffer; |
2269 | | |
2270 | | /* we are using hardcoded numbers for simplicity but we should |
2271 | | * probably eventually write a bit-level unpacker and use the |
2272 | | * _STREAMINFO_ constants. |
2273 | | */ |
2274 | 1.10M | block->min_blocksize = unpack_uint32_(b, 2); b += 2; |
2275 | 1.10M | block->max_blocksize = unpack_uint32_(b, 2); b += 2; |
2276 | 1.10M | block->min_framesize = unpack_uint32_(b, 3); b += 3; |
2277 | 1.10M | block->max_framesize = unpack_uint32_(b, 3); b += 3; |
2278 | 1.10M | block->sample_rate = (unpack_uint32_(b, 2) << 4) | ((uint32_t)(b[2] & 0xf0) >> 4); |
2279 | 1.10M | block->channels = (uint32_t)((b[2] & 0x0e) >> 1) + 1; |
2280 | 1.10M | block->bits_per_sample = ((((uint32_t)(b[2] & 0x01)) << 4) | (((uint32_t)(b[3] & 0xf0)) >> 4)) + 1; |
2281 | 1.10M | block->total_samples = (((FLAC__uint64)(b[3] & 0x0f)) << 32) | unpack_uint64_(b+4, 4); |
2282 | 1.10M | memcpy(block->md5sum, b+8, 16); |
2283 | | |
2284 | 1.10M | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
2285 | 1.10M | } |
2286 | | |
2287 | | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_padding_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Seek seek_cb, FLAC__StreamMetadata_Padding *block, uint32_t block_length) |
2288 | 50.3k | { |
2289 | 50.3k | (void)block; /* nothing to do; we don't care about reading the padding bytes */ |
2290 | | |
2291 | 50.3k | if(0 != seek_cb(handle, block_length, SEEK_CUR)) |
2292 | 0 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
2293 | | |
2294 | 50.3k | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
2295 | 50.3k | } |
2296 | | |
2297 | | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_application_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_Application *block, uint32_t block_length) |
2298 | 3.86k | { |
2299 | 3.86k | const uint32_t id_bytes = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8; |
2300 | | |
2301 | 3.86k | if(read_cb(block->id, 1, id_bytes, handle) != id_bytes) |
2302 | 26 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2303 | | |
2304 | 3.84k | if(block_length < id_bytes) |
2305 | 17 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2306 | | |
2307 | 3.82k | block_length -= id_bytes; |
2308 | | |
2309 | 3.82k | if(block_length == 0) { |
2310 | 2.14k | block->data = 0; |
2311 | 2.14k | } |
2312 | 1.68k | else { |
2313 | 1.68k | if(0 == (block->data = malloc(block_length))) |
2314 | 0 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
2315 | | |
2316 | 1.68k | if(read_cb(block->data, 1, block_length, handle) != block_length) |
2317 | 135 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2318 | 1.68k | } |
2319 | | |
2320 | 3.69k | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
2321 | 3.82k | } |
2322 | | |
2323 | | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_seektable_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_SeekTable *block, uint32_t block_length) |
2324 | 111k | { |
2325 | 111k | uint32_t i; |
2326 | 111k | FLAC__byte buffer[FLAC__STREAM_METADATA_SEEKPOINT_LENGTH]; |
2327 | | |
2328 | 111k | if(block_length % FLAC__STREAM_METADATA_SEEKPOINT_LENGTH != 0) |
2329 | 21 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA; |
2330 | | |
2331 | 111k | block->num_points = block_length / FLAC__STREAM_METADATA_SEEKPOINT_LENGTH; |
2332 | | |
2333 | 111k | if(block->num_points == 0) |
2334 | 109k | block->points = 0; |
2335 | 2.22k | else if(0 == (block->points = safe_malloc_mul_2op_p(block->num_points, /*times*/sizeof(FLAC__StreamMetadata_SeekPoint)))) |
2336 | 0 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
2337 | | |
2338 | 17.1M | for(i = 0; i < block->num_points; i++) { |
2339 | 17.0M | if(read_cb(buffer, 1, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH, handle) != FLAC__STREAM_METADATA_SEEKPOINT_LENGTH) |
2340 | 128 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2341 | | /* some MAGIC NUMBERs here */ |
2342 | 17.0M | block->points[i].sample_number = unpack_uint64_(buffer, 8); |
2343 | 17.0M | block->points[i].stream_offset = unpack_uint64_(buffer+8, 8); |
2344 | 17.0M | block->points[i].frame_samples = unpack_uint32_(buffer+16, 2); |
2345 | 17.0M | } |
2346 | | |
2347 | 111k | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
2348 | 111k | } |
2349 | | |
2350 | | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_vorbis_comment_entry_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_VorbisComment_Entry *entry, uint32_t max_length) |
2351 | 1.37M | { |
2352 | 1.37M | const uint32_t entry_length_len = FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN / 8; |
2353 | 1.37M | FLAC__byte buffer[4]; /* magic number is asserted below */ |
2354 | | |
2355 | 1.37M | FLAC__ASSERT(FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN / 8 == sizeof(buffer)); |
2356 | | |
2357 | 1.37M | if(max_length < entry_length_len) |
2358 | 96 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA; |
2359 | | |
2360 | 1.37M | max_length -= entry_length_len; |
2361 | 1.37M | if(read_cb(buffer, 1, entry_length_len, handle) != entry_length_len) |
2362 | 358 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2363 | 1.37M | entry->length = unpack_uint32_little_endian_(buffer, entry_length_len); |
2364 | 1.37M | if(max_length < entry->length) { |
2365 | 231 | entry->length = 0; |
2366 | 231 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA; |
2367 | 231 | } |
2368 | | |
2369 | 1.37M | if(0 != entry->entry) |
2370 | 8.58k | free(entry->entry); |
2371 | | |
2372 | 1.37M | if(0 == (entry->entry = safe_malloc_add_2op_(entry->length, /*+*/1))) |
2373 | 0 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
2374 | | |
2375 | 1.37M | if(entry->length > 0 && read_cb(entry->entry, 1, entry->length, handle) != entry->length) |
2376 | 243 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2377 | | |
2378 | 1.36M | entry->entry[entry->length] = '\0'; |
2379 | | |
2380 | 1.36M | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
2381 | 1.37M | } |
2382 | | |
2383 | | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_vorbis_comment_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb, FLAC__StreamMetadata_VorbisComment *block, uint32_t block_length) |
2384 | 8.96k | { |
2385 | 8.96k | uint32_t i; |
2386 | 8.96k | FLAC__Metadata_SimpleIteratorStatus status; |
2387 | 8.96k | const uint32_t num_comments_len = FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN / 8; |
2388 | 8.96k | FLAC__byte buffer[4]; /* magic number is asserted below */ |
2389 | | |
2390 | 8.96k | FLAC__ASSERT(FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN / 8 == sizeof(buffer)); |
2391 | | |
2392 | 8.96k | status = read_metadata_block_data_vorbis_comment_entry_cb_(handle, read_cb, &(block->vendor_string), block_length); |
2393 | 8.96k | if(block_length >= 4) |
2394 | 8.87k | block_length -= 4; |
2395 | 8.96k | if(status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA) |
2396 | 223 | goto skip; |
2397 | 8.74k | else if(status != FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK) |
2398 | 285 | return status; |
2399 | 8.45k | block_length -= block->vendor_string.length; |
2400 | | |
2401 | 8.45k | if(block_length < num_comments_len) goto skip; else block_length -= num_comments_len; |
2402 | 4.35k | if(read_cb(buffer, 1, num_comments_len, handle) != num_comments_len) |
2403 | 78 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2404 | 4.27k | block->num_comments = unpack_uint32_little_endian_(buffer, num_comments_len); |
2405 | | |
2406 | 4.27k | if(block->num_comments == 0) { |
2407 | 1.18k | block->comments = 0; |
2408 | 1.18k | } |
2409 | 3.09k | else if(block->num_comments > (block_length >> 2)) { /* each comment needs at least 4 byte */ |
2410 | 265 | block->num_comments = 0; |
2411 | 265 | status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA; |
2412 | 265 | goto skip; |
2413 | 265 | } |
2414 | 2.82k | else if(0 == (block->comments = calloc(block->num_comments, sizeof(FLAC__StreamMetadata_VorbisComment_Entry)))) { |
2415 | 0 | block->num_comments = 0; |
2416 | 0 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
2417 | 0 | } |
2418 | | |
2419 | 1.36M | for(i = 0; i < block->num_comments; i++) { |
2420 | 1.36M | status = read_metadata_block_data_vorbis_comment_entry_cb_(handle, read_cb, block->comments + i, block_length); |
2421 | 1.36M | if(block_length >= 4) block_length -= 4; |
2422 | 1.36M | if(status == FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA) { |
2423 | 104 | block->num_comments = i; |
2424 | 104 | goto skip; |
2425 | 104 | } |
2426 | 1.36M | else if(status != FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK) return status; |
2427 | 1.36M | block_length -= block->comments[i].length; |
2428 | 1.36M | } |
2429 | | |
2430 | 8.28k | skip: |
2431 | 8.28k | if(block_length > 0) { |
2432 | | /* bad metadata */ |
2433 | 4.45k | if(0 != seek_cb(handle, block_length, SEEK_CUR)) |
2434 | 0 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
2435 | 4.45k | } |
2436 | | |
2437 | 8.28k | return status; |
2438 | 8.28k | } |
2439 | | |
2440 | | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_cuesheet_track_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_CueSheet_Track *track) |
2441 | 31.2k | { |
2442 | 31.2k | uint32_t i, len; |
2443 | 31.2k | FLAC__byte buffer[32]; /* asserted below that this is big enough */ |
2444 | | |
2445 | 31.2k | FLAC__ASSERT(sizeof(buffer) >= sizeof(FLAC__uint64)); |
2446 | 31.2k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN/8); |
2447 | 31.2k | FLAC__ASSERT(sizeof(buffer) >= (FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN) / 8); |
2448 | | |
2449 | 31.2k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN % 8 == 0); |
2450 | 31.2k | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN / 8; |
2451 | 31.2k | if(read_cb(buffer, 1, len, handle) != len) |
2452 | 75 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2453 | 31.1k | track->offset = unpack_uint64_(buffer, len); |
2454 | | |
2455 | 31.1k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN % 8 == 0); |
2456 | 31.1k | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN / 8; |
2457 | 31.1k | if(read_cb(buffer, 1, len, handle) != len) |
2458 | 17 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2459 | 31.1k | track->number = (FLAC__byte)unpack_uint32_(buffer, len); |
2460 | | |
2461 | 31.1k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN % 8 == 0); |
2462 | 31.1k | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN / 8; |
2463 | 31.1k | if(read_cb(track->isrc, 1, len, handle) != len) |
2464 | 25 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2465 | | |
2466 | 31.0k | FLAC__ASSERT((FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN) % 8 == 0); |
2467 | 31.0k | len = (FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN) / 8; |
2468 | 31.0k | if(read_cb(buffer, 1, len, handle) != len) |
2469 | 11 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2470 | 31.0k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN == 1); |
2471 | 31.0k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN == 1); |
2472 | 31.0k | track->type = buffer[0] >> 7; |
2473 | 31.0k | track->pre_emphasis = (buffer[0] >> 6) & 1; |
2474 | | |
2475 | 31.0k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN % 8 == 0); |
2476 | 31.0k | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN / 8; |
2477 | 31.0k | if(read_cb(buffer, 1, len, handle) != len) |
2478 | 5 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2479 | 31.0k | track->num_indices = (FLAC__byte)unpack_uint32_(buffer, len); |
2480 | | |
2481 | 31.0k | if(track->num_indices == 0) { |
2482 | 17.4k | track->indices = 0; |
2483 | 17.4k | } |
2484 | 13.5k | else if(0 == (track->indices = calloc(track->num_indices, sizeof(FLAC__StreamMetadata_CueSheet_Index)))) |
2485 | 0 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
2486 | | |
2487 | 344k | for(i = 0; i < track->num_indices; i++) { |
2488 | 313k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN % 8 == 0); |
2489 | 313k | len = FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN / 8; |
2490 | 313k | if(read_cb(buffer, 1, len, handle) != len) |
2491 | 55 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2492 | 313k | track->indices[i].offset = unpack_uint64_(buffer, len); |
2493 | | |
2494 | 313k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN % 8 == 0); |
2495 | 313k | len = FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN / 8; |
2496 | 313k | if(read_cb(buffer, 1, len, handle) != len) |
2497 | 23 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2498 | 313k | track->indices[i].number = (FLAC__byte)unpack_uint32_(buffer, len); |
2499 | | |
2500 | 313k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN % 8 == 0); |
2501 | 313k | len = FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN / 8; |
2502 | 313k | if(read_cb(buffer, 1, len, handle) != len) |
2503 | 26 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2504 | 313k | } |
2505 | | |
2506 | 30.9k | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
2507 | 31.0k | } |
2508 | | |
2509 | | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_cuesheet_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_CueSheet *block) |
2510 | 3.99k | { |
2511 | 3.99k | uint32_t i, len; |
2512 | 3.99k | FLAC__Metadata_SimpleIteratorStatus status; |
2513 | 3.99k | FLAC__byte buffer[1024]; /* MSVC needs a constant expression so we put a magic number and assert */ |
2514 | | |
2515 | 3.99k | FLAC__ASSERT((FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN)/8 <= sizeof(buffer)); |
2516 | 3.99k | FLAC__ASSERT(sizeof(FLAC__uint64) <= sizeof(buffer)); |
2517 | | |
2518 | 3.99k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN % 8 == 0); |
2519 | 3.99k | len = FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN / 8; |
2520 | 3.99k | if(read_cb(block->media_catalog_number, 1, len, handle) != len) |
2521 | 81 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2522 | | |
2523 | 3.91k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN % 8 == 0); |
2524 | 3.91k | len = FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN / 8; |
2525 | 3.91k | if(read_cb(buffer, 1, len, handle) != len) |
2526 | 15 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2527 | 3.90k | block->lead_in = unpack_uint64_(buffer, len); |
2528 | | |
2529 | 3.90k | FLAC__ASSERT((FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN) % 8 == 0); |
2530 | 3.90k | len = (FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN) / 8; |
2531 | 3.90k | if(read_cb(buffer, 1, len, handle) != len) |
2532 | 59 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2533 | 3.84k | block->is_cd = buffer[0]&0x80? true : false; |
2534 | | |
2535 | 3.84k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN % 8 == 0); |
2536 | 3.84k | len = FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN / 8; |
2537 | 3.84k | if(read_cb(buffer, 1, len, handle) != len) |
2538 | 5 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2539 | 3.83k | block->num_tracks = unpack_uint32_(buffer, len); |
2540 | | |
2541 | 3.83k | if(block->num_tracks == 0) { |
2542 | 12 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA; |
2543 | 12 | } |
2544 | 3.82k | else if(0 == (block->tracks = calloc(block->num_tracks, sizeof(FLAC__StreamMetadata_CueSheet_Track)))) |
2545 | 0 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
2546 | | |
2547 | 34.7k | for(i = 0; i < block->num_tracks; i++) { |
2548 | 31.2k | if(FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK != (status = read_metadata_block_data_cuesheet_track_cb_(handle, read_cb, block->tracks + i))) |
2549 | 237 | return status; |
2550 | 31.2k | } |
2551 | | |
2552 | 3.59k | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
2553 | 3.82k | } |
2554 | | |
2555 | | static FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_picture_cstring_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__byte **data, FLAC__uint32 *length, FLAC__uint32 length_len) |
2556 | 23.8k | { |
2557 | 23.8k | FLAC__byte buffer[sizeof(FLAC__uint32)]; |
2558 | | |
2559 | 23.8k | FLAC__ASSERT(0 != data); |
2560 | 23.8k | FLAC__ASSERT(length_len%8 == 0); |
2561 | | |
2562 | 23.8k | length_len /= 8; /* convert to bytes */ |
2563 | | |
2564 | 23.8k | FLAC__ASSERT(sizeof(buffer) >= length_len); |
2565 | | |
2566 | 23.8k | if(read_cb(buffer, 1, length_len, handle) != length_len) |
2567 | 95 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2568 | 23.7k | *length = unpack_uint32_(buffer, length_len); |
2569 | | |
2570 | 23.7k | if(*length > (1u << FLAC__STREAM_METADATA_LENGTH_LEN)) /* data cannot be larger than FLAC metadata block */ |
2571 | 449 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA; |
2572 | | |
2573 | 23.3k | if(0 != *data) |
2574 | 15.8k | free(*data); |
2575 | | |
2576 | 23.3k | if(0 == (*data = safe_malloc_add_2op_(*length, /*+*/1))) |
2577 | 0 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
2578 | | |
2579 | 23.3k | if(*length > 0) { |
2580 | 5.91k | if(read_cb(*data, 1, *length, handle) != *length) |
2581 | 368 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2582 | 5.91k | } |
2583 | | |
2584 | 22.9k | (*data)[*length] = '\0'; |
2585 | | |
2586 | 22.9k | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
2587 | 23.3k | } |
2588 | | |
2589 | | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_picture_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_Picture *block) |
2590 | 8.35k | { |
2591 | 8.35k | FLAC__Metadata_SimpleIteratorStatus status; |
2592 | 8.35k | FLAC__byte buffer[4]; /* asserted below that this is big enough */ |
2593 | 8.35k | FLAC__uint32 len; |
2594 | | |
2595 | 8.35k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_TYPE_LEN/8); |
2596 | 8.35k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN/8); |
2597 | 8.35k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN/8); |
2598 | 8.35k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN/8); |
2599 | 8.35k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_COLORS_LEN/8); |
2600 | | |
2601 | 8.35k | FLAC__ASSERT(FLAC__STREAM_METADATA_PICTURE_TYPE_LEN % 8 == 0); |
2602 | 8.35k | len = FLAC__STREAM_METADATA_PICTURE_TYPE_LEN / 8; |
2603 | 8.35k | if(read_cb(buffer, 1, len, handle) != len) |
2604 | 33 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2605 | 8.32k | block->type = (FLAC__StreamMetadata_Picture_Type)unpack_uint32_(buffer, len); |
2606 | | |
2607 | 8.32k | if((status = read_metadata_block_data_picture_cstring_cb_(handle, read_cb, (FLAC__byte**)(&(block->mime_type)), &len, FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN)) != FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK) |
2608 | 344 | return status; |
2609 | | |
2610 | 7.97k | if((status = read_metadata_block_data_picture_cstring_cb_(handle, read_cb, &(block->description), &len, FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN)) != FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK) |
2611 | 305 | return status; |
2612 | | |
2613 | 7.67k | FLAC__ASSERT(FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN % 8 == 0); |
2614 | 7.67k | len = FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN / 8; |
2615 | 7.67k | if(read_cb(buffer, 1, len, handle) != len) |
2616 | 36 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2617 | 7.63k | block->width = unpack_uint32_(buffer, len); |
2618 | | |
2619 | 7.63k | FLAC__ASSERT(FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN % 8 == 0); |
2620 | 7.63k | len = FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN / 8; |
2621 | 7.63k | if(read_cb(buffer, 1, len, handle) != len) |
2622 | 35 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2623 | 7.60k | block->height = unpack_uint32_(buffer, len); |
2624 | | |
2625 | 7.60k | FLAC__ASSERT(FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN % 8 == 0); |
2626 | 7.60k | len = FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN / 8; |
2627 | 7.60k | if(read_cb(buffer, 1, len, handle) != len) |
2628 | 18 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2629 | 7.58k | block->depth = unpack_uint32_(buffer, len); |
2630 | | |
2631 | 7.58k | FLAC__ASSERT(FLAC__STREAM_METADATA_PICTURE_COLORS_LEN % 8 == 0); |
2632 | 7.58k | len = FLAC__STREAM_METADATA_PICTURE_COLORS_LEN / 8; |
2633 | 7.58k | if(read_cb(buffer, 1, len, handle) != len) |
2634 | 20 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2635 | 7.56k | block->colors = unpack_uint32_(buffer, len); |
2636 | | |
2637 | | /* for convenience we use read_metadata_block_data_picture_cstring_cb_() even though it adds an extra terminating NUL we don't use */ |
2638 | 7.56k | if((status = read_metadata_block_data_picture_cstring_cb_(handle, read_cb, &(block->data), &(block->data_length), FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN)) != FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK) |
2639 | 263 | return status; |
2640 | | |
2641 | 7.30k | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
2642 | 7.56k | } |
2643 | | |
2644 | | FLAC__Metadata_SimpleIteratorStatus read_metadata_block_data_unknown_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__StreamMetadata_Unknown *block, uint32_t block_length) |
2645 | 20.7k | { |
2646 | 20.7k | if(block_length == 0) { |
2647 | 11.6k | block->data = 0; |
2648 | 11.6k | } |
2649 | 9.13k | else { |
2650 | 9.13k | if(0 == (block->data = malloc(block_length))) |
2651 | 0 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
2652 | | |
2653 | 9.13k | if(read_cb(block->data, 1, block_length, handle) != block_length) |
2654 | 152 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
2655 | 9.13k | } |
2656 | | |
2657 | 20.6k | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
2658 | 20.7k | } |
2659 | | |
2660 | | FLAC__bool write_metadata_block_header_(FILE *file, FLAC__Metadata_SimpleIteratorStatus *status, const FLAC__StreamMetadata *block) |
2661 | 389k | { |
2662 | 389k | FLAC__ASSERT(0 != file); |
2663 | 389k | FLAC__ASSERT(0 != status); |
2664 | | |
2665 | 389k | if(!write_metadata_block_header_cb_((FLAC__IOHandle)file, (FLAC__IOCallback_Write)fwrite, block)) { |
2666 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
2667 | 0 | return false; |
2668 | 0 | } |
2669 | | |
2670 | 389k | return true; |
2671 | 389k | } |
2672 | | |
2673 | | FLAC__bool write_metadata_block_data_(FILE *file, FLAC__Metadata_SimpleIteratorStatus *status, const FLAC__StreamMetadata *block) |
2674 | 389k | { |
2675 | 389k | FLAC__ASSERT(0 != file); |
2676 | 389k | FLAC__ASSERT(0 != status); |
2677 | | |
2678 | 389k | if (write_metadata_block_data_cb_((FLAC__IOHandle)file, (FLAC__IOCallback_Write)fwrite, block)) { |
2679 | 389k | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK; |
2680 | 389k | return true; |
2681 | 389k | } |
2682 | 0 | else { |
2683 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
2684 | 0 | return false; |
2685 | 0 | } |
2686 | 389k | } |
2687 | | |
2688 | | FLAC__bool write_metadata_block_header_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata *block) |
2689 | 415k | { |
2690 | 415k | FLAC__byte buffer[FLAC__STREAM_METADATA_HEADER_LENGTH]; |
2691 | | |
2692 | 415k | FLAC__ASSERT(block->length < (1u << FLAC__STREAM_METADATA_LENGTH_LEN)); |
2693 | | /* double protection */ |
2694 | 415k | if(block->length >= (1u << FLAC__STREAM_METADATA_LENGTH_LEN)) |
2695 | 0 | return false; |
2696 | | |
2697 | 415k | buffer[0] = (block->is_last? 0x80 : 0) | (FLAC__byte)block->type; |
2698 | 415k | pack_uint32_(block->length, buffer + 1, 3); |
2699 | | |
2700 | 415k | if(write_cb(buffer, 1, FLAC__STREAM_METADATA_HEADER_LENGTH, handle) != FLAC__STREAM_METADATA_HEADER_LENGTH) |
2701 | 0 | return false; |
2702 | | |
2703 | 415k | return true; |
2704 | 415k | } |
2705 | | |
2706 | | FLAC__bool write_metadata_block_data_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata *block) |
2707 | 415k | { |
2708 | 415k | FLAC__ASSERT(0 != block); |
2709 | | |
2710 | 415k | switch(block->type) { |
2711 | 313k | case FLAC__METADATA_TYPE_STREAMINFO: |
2712 | 313k | return write_metadata_block_data_streaminfo_cb_(handle, write_cb, &block->data.stream_info); |
2713 | 24.6k | case FLAC__METADATA_TYPE_PADDING: |
2714 | 24.6k | return write_metadata_block_data_padding_cb_(handle, write_cb, &block->data.padding, block->length); |
2715 | 2.10k | case FLAC__METADATA_TYPE_APPLICATION: |
2716 | 2.10k | return write_metadata_block_data_application_cb_(handle, write_cb, &block->data.application, block->length); |
2717 | 57.5k | case FLAC__METADATA_TYPE_SEEKTABLE: |
2718 | 57.5k | return write_metadata_block_data_seektable_cb_(handle, write_cb, &block->data.seek_table); |
2719 | 4.81k | case FLAC__METADATA_TYPE_VORBIS_COMMENT: |
2720 | 4.81k | return write_metadata_block_data_vorbis_comment_cb_(handle, write_cb, &block->data.vorbis_comment); |
2721 | 2.13k | case FLAC__METADATA_TYPE_CUESHEET: |
2722 | 2.13k | return write_metadata_block_data_cuesheet_cb_(handle, write_cb, &block->data.cue_sheet); |
2723 | 2.44k | case FLAC__METADATA_TYPE_PICTURE: |
2724 | 2.44k | return write_metadata_block_data_picture_cb_(handle, write_cb, &block->data.picture); |
2725 | 8.37k | default: |
2726 | 8.37k | return write_metadata_block_data_unknown_cb_(handle, write_cb, &block->data.unknown, block->length); |
2727 | 415k | } |
2728 | 415k | } |
2729 | | |
2730 | | FLAC__bool write_metadata_block_data_streaminfo_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_StreamInfo *block) |
2731 | 313k | { |
2732 | 313k | FLAC__byte buffer[FLAC__STREAM_METADATA_STREAMINFO_LENGTH]; |
2733 | 313k | const uint32_t channels1 = block->channels - 1; |
2734 | 313k | const uint32_t bps1 = block->bits_per_sample - 1; |
2735 | | |
2736 | | /* we are using hardcoded numbers for simplicity but we should |
2737 | | * probably eventually write a bit-level packer and use the |
2738 | | * _STREAMINFO_ constants. |
2739 | | */ |
2740 | 313k | pack_uint32_(block->min_blocksize, buffer, 2); |
2741 | 313k | pack_uint32_(block->max_blocksize, buffer+2, 2); |
2742 | 313k | pack_uint32_(block->min_framesize, buffer+4, 3); |
2743 | 313k | pack_uint32_(block->max_framesize, buffer+7, 3); |
2744 | 313k | buffer[10] = (block->sample_rate >> 12) & 0xff; |
2745 | 313k | buffer[11] = (block->sample_rate >> 4) & 0xff; |
2746 | 313k | buffer[12] = ((block->sample_rate & 0x0f) << 4) | (channels1 << 1) | (bps1 >> 4); |
2747 | 313k | buffer[13] = (FLAC__byte)(((bps1 & 0x0f) << 4) | ((block->total_samples >> 32) & 0x0f)); |
2748 | 313k | pack_uint32_((FLAC__uint32)block->total_samples, buffer+14, 4); |
2749 | 313k | memcpy(buffer+18, block->md5sum, 16); |
2750 | | |
2751 | 313k | if(write_cb(buffer, 1, FLAC__STREAM_METADATA_STREAMINFO_LENGTH, handle) != FLAC__STREAM_METADATA_STREAMINFO_LENGTH) |
2752 | 0 | return false; |
2753 | | |
2754 | 313k | return true; |
2755 | 313k | } |
2756 | | |
2757 | | FLAC__bool write_metadata_block_data_padding_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Padding *block, uint32_t block_length) |
2758 | 24.6k | { |
2759 | 24.6k | uint32_t i, n = block_length; |
2760 | 24.6k | FLAC__byte buffer[1024]; |
2761 | | |
2762 | 24.6k | (void)block; |
2763 | | |
2764 | 24.6k | memset(buffer, 0, 1024); |
2765 | | |
2766 | 9.52M | for(i = 0; i < n/1024; i++) |
2767 | 9.50M | if(write_cb(buffer, 1, 1024, handle) != 1024) |
2768 | 0 | return false; |
2769 | | |
2770 | 24.6k | n %= 1024; |
2771 | | |
2772 | 24.6k | if(write_cb(buffer, 1, n, handle) != n) |
2773 | 0 | return false; |
2774 | | |
2775 | 24.6k | return true; |
2776 | 24.6k | } |
2777 | | |
2778 | | FLAC__bool write_metadata_block_data_application_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Application *block, uint32_t block_length) |
2779 | 2.10k | { |
2780 | 2.10k | const uint32_t id_bytes = FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8; |
2781 | | |
2782 | 2.10k | if(write_cb(block->id, 1, id_bytes, handle) != id_bytes) |
2783 | 0 | return false; |
2784 | | |
2785 | 2.10k | block_length -= id_bytes; |
2786 | | |
2787 | 2.10k | if(write_cb(block->data, 1, block_length, handle) != block_length) |
2788 | 0 | return false; |
2789 | | |
2790 | 2.10k | return true; |
2791 | 2.10k | } |
2792 | | |
2793 | | FLAC__bool write_metadata_block_data_seektable_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_SeekTable *block) |
2794 | 57.5k | { |
2795 | 57.5k | uint32_t i; |
2796 | 57.5k | FLAC__byte buffer[FLAC__STREAM_METADATA_SEEKPOINT_LENGTH]; |
2797 | | |
2798 | 22.8M | for(i = 0; i < block->num_points; i++) { |
2799 | | /* some MAGIC NUMBERs here */ |
2800 | 22.8M | pack_uint64_(block->points[i].sample_number, buffer, 8); |
2801 | 22.8M | pack_uint64_(block->points[i].stream_offset, buffer+8, 8); |
2802 | 22.8M | pack_uint32_(block->points[i].frame_samples, buffer+16, 2); |
2803 | 22.8M | if(write_cb(buffer, 1, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH, handle) != FLAC__STREAM_METADATA_SEEKPOINT_LENGTH) |
2804 | 0 | return false; |
2805 | 22.8M | } |
2806 | | |
2807 | 57.5k | return true; |
2808 | 57.5k | } |
2809 | | |
2810 | | FLAC__bool write_metadata_block_data_vorbis_comment_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_VorbisComment *block) |
2811 | 4.81k | { |
2812 | 4.81k | uint32_t i; |
2813 | 4.81k | const uint32_t entry_length_len = FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN / 8; |
2814 | 4.81k | const uint32_t num_comments_len = FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN / 8; |
2815 | 4.81k | FLAC__byte buffer[4]; /* magic number is asserted below */ |
2816 | | |
2817 | 4.81k | FLAC__ASSERT(flac_max(FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN, FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN) / 8 == sizeof(buffer)); |
2818 | | |
2819 | 4.81k | pack_uint32_little_endian_(block->vendor_string.length, buffer, entry_length_len); |
2820 | 4.81k | if(write_cb(buffer, 1, entry_length_len, handle) != entry_length_len) |
2821 | 0 | return false; |
2822 | 4.81k | if(write_cb(block->vendor_string.entry, 1, block->vendor_string.length, handle) != block->vendor_string.length) |
2823 | 0 | return false; |
2824 | | |
2825 | 4.81k | pack_uint32_little_endian_(block->num_comments, buffer, num_comments_len); |
2826 | 4.81k | if(write_cb(buffer, 1, num_comments_len, handle) != num_comments_len) |
2827 | 0 | return false; |
2828 | | |
2829 | 927k | for(i = 0; i < block->num_comments; i++) { |
2830 | 922k | pack_uint32_little_endian_(block->comments[i].length, buffer, entry_length_len); |
2831 | 922k | if(write_cb(buffer, 1, entry_length_len, handle) != entry_length_len) |
2832 | 0 | return false; |
2833 | 922k | if(write_cb(block->comments[i].entry, 1, block->comments[i].length, handle) != block->comments[i].length) |
2834 | 0 | return false; |
2835 | 922k | } |
2836 | | |
2837 | 4.81k | return true; |
2838 | 4.81k | } |
2839 | | |
2840 | | FLAC__bool write_metadata_block_data_cuesheet_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_CueSheet *block) |
2841 | 2.13k | { |
2842 | 2.13k | uint32_t i, j, len; |
2843 | 2.13k | FLAC__byte buffer[1024]; /* asserted below that this is big enough */ |
2844 | | |
2845 | 2.13k | FLAC__ASSERT(sizeof(buffer) >= sizeof(FLAC__uint64)); |
2846 | 2.13k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN/8); |
2847 | 2.13k | FLAC__ASSERT(sizeof(buffer) >= (FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN)/8); |
2848 | 2.13k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN/8); |
2849 | | |
2850 | 2.13k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN % 8 == 0); |
2851 | 2.13k | len = FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN / 8; |
2852 | 2.13k | if(write_cb(block->media_catalog_number, 1, len, handle) != len) |
2853 | 0 | return false; |
2854 | | |
2855 | 2.13k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN % 8 == 0); |
2856 | 2.13k | len = FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN / 8; |
2857 | 2.13k | pack_uint64_(block->lead_in, buffer, len); |
2858 | 2.13k | if(write_cb(buffer, 1, len, handle) != len) |
2859 | 0 | return false; |
2860 | | |
2861 | 2.13k | FLAC__ASSERT((FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN) % 8 == 0); |
2862 | 2.13k | len = (FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN + FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN) / 8; |
2863 | 2.13k | memset(buffer, 0, len); |
2864 | 2.13k | if(block->is_cd) |
2865 | 558 | buffer[0] |= 0x80; |
2866 | 2.13k | if(write_cb(buffer, 1, len, handle) != len) |
2867 | 0 | return false; |
2868 | | |
2869 | 2.13k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN % 8 == 0); |
2870 | 2.13k | len = FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN / 8; |
2871 | 2.13k | pack_uint32_(block->num_tracks, buffer, len); |
2872 | 2.13k | if(write_cb(buffer, 1, len, handle) != len) |
2873 | 0 | return false; |
2874 | | |
2875 | 55.9k | for(i = 0; i < block->num_tracks; i++) { |
2876 | 53.8k | FLAC__StreamMetadata_CueSheet_Track *track = block->tracks + i; |
2877 | | |
2878 | 53.8k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN % 8 == 0); |
2879 | 53.8k | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN / 8; |
2880 | 53.8k | pack_uint64_(track->offset, buffer, len); |
2881 | 53.8k | if(write_cb(buffer, 1, len, handle) != len) |
2882 | 0 | return false; |
2883 | | |
2884 | 53.8k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN % 8 == 0); |
2885 | 53.8k | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN / 8; |
2886 | 53.8k | pack_uint32_(track->number, buffer, len); |
2887 | 53.8k | if(write_cb(buffer, 1, len, handle) != len) |
2888 | 0 | return false; |
2889 | | |
2890 | 53.8k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN % 8 == 0); |
2891 | 53.8k | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN / 8; |
2892 | 53.8k | if(write_cb(track->isrc, 1, len, handle) != len) |
2893 | 0 | return false; |
2894 | | |
2895 | 53.8k | FLAC__ASSERT((FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN) % 8 == 0); |
2896 | 53.8k | len = (FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN + FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN) / 8; |
2897 | 53.8k | memset(buffer, 0, len); |
2898 | 53.8k | buffer[0] = (track->type << 7) | (track->pre_emphasis << 6); |
2899 | 53.8k | if(write_cb(buffer, 1, len, handle) != len) |
2900 | 0 | return false; |
2901 | | |
2902 | 53.8k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN % 8 == 0); |
2903 | 53.8k | len = FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN / 8; |
2904 | 53.8k | pack_uint32_(track->num_indices, buffer, len); |
2905 | 53.8k | if(write_cb(buffer, 1, len, handle) != len) |
2906 | 0 | return false; |
2907 | | |
2908 | 74.6k | for(j = 0; j < track->num_indices; j++) { |
2909 | 20.8k | FLAC__StreamMetadata_CueSheet_Index *indx = track->indices + j; |
2910 | | |
2911 | 20.8k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN % 8 == 0); |
2912 | 20.8k | len = FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN / 8; |
2913 | 20.8k | pack_uint64_(indx->offset, buffer, len); |
2914 | 20.8k | if(write_cb(buffer, 1, len, handle) != len) |
2915 | 0 | return false; |
2916 | | |
2917 | 20.8k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN % 8 == 0); |
2918 | 20.8k | len = FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN / 8; |
2919 | 20.8k | pack_uint32_(indx->number, buffer, len); |
2920 | 20.8k | if(write_cb(buffer, 1, len, handle) != len) |
2921 | 0 | return false; |
2922 | | |
2923 | 20.8k | FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN % 8 == 0); |
2924 | 20.8k | len = FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN / 8; |
2925 | 20.8k | memset(buffer, 0, len); |
2926 | 20.8k | if(write_cb(buffer, 1, len, handle) != len) |
2927 | 0 | return false; |
2928 | 20.8k | } |
2929 | 53.8k | } |
2930 | | |
2931 | 2.13k | return true; |
2932 | 2.13k | } |
2933 | | |
2934 | | FLAC__bool write_metadata_block_data_picture_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Picture *block) |
2935 | 2.44k | { |
2936 | 2.44k | uint32_t len; |
2937 | 2.44k | size_t slen; |
2938 | 2.44k | FLAC__byte buffer[4]; /* magic number is asserted below */ |
2939 | | |
2940 | 2.44k | FLAC__ASSERT(0 == FLAC__STREAM_METADATA_PICTURE_TYPE_LEN%8); |
2941 | 2.44k | FLAC__ASSERT(0 == FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN%8); |
2942 | 2.44k | FLAC__ASSERT(0 == FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN%8); |
2943 | 2.44k | FLAC__ASSERT(0 == FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN%8); |
2944 | 2.44k | FLAC__ASSERT(0 == FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN%8); |
2945 | 2.44k | FLAC__ASSERT(0 == FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN%8); |
2946 | 2.44k | FLAC__ASSERT(0 == FLAC__STREAM_METADATA_PICTURE_COLORS_LEN%8); |
2947 | 2.44k | FLAC__ASSERT(0 == FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN%8); |
2948 | 2.44k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_TYPE_LEN/8); |
2949 | 2.44k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN/8); |
2950 | 2.44k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN/8); |
2951 | 2.44k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN/8); |
2952 | 2.44k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN/8); |
2953 | 2.44k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN/8); |
2954 | 2.44k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_COLORS_LEN/8); |
2955 | 2.44k | FLAC__ASSERT(sizeof(buffer) >= FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN/8); |
2956 | | |
2957 | 2.44k | len = FLAC__STREAM_METADATA_PICTURE_TYPE_LEN/8; |
2958 | 2.44k | pack_uint32_(block->type, buffer, len); |
2959 | 2.44k | if(write_cb(buffer, 1, len, handle) != len) |
2960 | 0 | return false; |
2961 | | |
2962 | 2.44k | len = FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN/8; |
2963 | 2.44k | slen = strlen(block->mime_type); |
2964 | 2.44k | pack_uint32_(slen, buffer, len); |
2965 | 2.44k | if(write_cb(buffer, 1, len, handle) != len) |
2966 | 0 | return false; |
2967 | 2.44k | if(write_cb(block->mime_type, 1, slen, handle) != slen) |
2968 | 0 | return false; |
2969 | | |
2970 | 2.44k | len = FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN/8; |
2971 | 2.44k | slen = strlen((const char *)block->description); |
2972 | 2.44k | pack_uint32_(slen, buffer, len); |
2973 | 2.44k | if(write_cb(buffer, 1, len, handle) != len) |
2974 | 0 | return false; |
2975 | 2.44k | if(write_cb(block->description, 1, slen, handle) != slen) |
2976 | 0 | return false; |
2977 | | |
2978 | 2.44k | len = FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN/8; |
2979 | 2.44k | pack_uint32_(block->width, buffer, len); |
2980 | 2.44k | if(write_cb(buffer, 1, len, handle) != len) |
2981 | 0 | return false; |
2982 | | |
2983 | 2.44k | len = FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN/8; |
2984 | 2.44k | pack_uint32_(block->height, buffer, len); |
2985 | 2.44k | if(write_cb(buffer, 1, len, handle) != len) |
2986 | 0 | return false; |
2987 | | |
2988 | 2.44k | len = FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN/8; |
2989 | 2.44k | pack_uint32_(block->depth, buffer, len); |
2990 | 2.44k | if(write_cb(buffer, 1, len, handle) != len) |
2991 | 0 | return false; |
2992 | | |
2993 | 2.44k | len = FLAC__STREAM_METADATA_PICTURE_COLORS_LEN/8; |
2994 | 2.44k | pack_uint32_(block->colors, buffer, len); |
2995 | 2.44k | if(write_cb(buffer, 1, len, handle) != len) |
2996 | 0 | return false; |
2997 | | |
2998 | 2.44k | len = FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN/8; |
2999 | 2.44k | pack_uint32_(block->data_length, buffer, len); |
3000 | 2.44k | if(write_cb(buffer, 1, len, handle) != len) |
3001 | 0 | return false; |
3002 | 2.44k | if(write_cb(block->data, 1, block->data_length, handle) != block->data_length) |
3003 | 0 | return false; |
3004 | | |
3005 | 2.44k | return true; |
3006 | 2.44k | } |
3007 | | |
3008 | | FLAC__bool write_metadata_block_data_unknown_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Write write_cb, const FLAC__StreamMetadata_Unknown *block, uint32_t block_length) |
3009 | 8.37k | { |
3010 | 8.37k | if(write_cb(block->data, 1, block_length, handle) != block_length) |
3011 | 0 | return false; |
3012 | | |
3013 | 8.37k | return true; |
3014 | 8.37k | } |
3015 | | |
3016 | | FLAC__bool write_metadata_block_stationary_(FLAC__Metadata_SimpleIterator *iterator, const FLAC__StreamMetadata *block) |
3017 | 529 | { |
3018 | 529 | if(0 != fseeko(iterator->file, iterator->offset[iterator->depth], SEEK_SET)) { |
3019 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
3020 | 0 | return false; |
3021 | 0 | } |
3022 | | |
3023 | 529 | if(!write_metadata_block_header_(iterator->file, &iterator->status, block)) |
3024 | 0 | return false; |
3025 | | |
3026 | 529 | if(!write_metadata_block_data_(iterator->file, &iterator->status, block)) |
3027 | 0 | return false; |
3028 | | |
3029 | 529 | if(0 != fseeko(iterator->file, iterator->offset[iterator->depth], SEEK_SET)) { |
3030 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
3031 | 0 | return false; |
3032 | 0 | } |
3033 | | |
3034 | 529 | return read_metadata_block_header_(iterator); |
3035 | 529 | } |
3036 | | |
3037 | | FLAC__bool write_metadata_block_stationary_with_padding_(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, uint32_t padding_length, FLAC__bool padding_is_last) |
3038 | 222 | { |
3039 | 222 | FLAC__StreamMetadata *padding; |
3040 | | |
3041 | 222 | if(0 != fseeko(iterator->file, iterator->offset[iterator->depth], SEEK_SET)) { |
3042 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
3043 | 0 | return false; |
3044 | 0 | } |
3045 | | |
3046 | 222 | block->is_last = false; |
3047 | | |
3048 | 222 | if(!write_metadata_block_header_(iterator->file, &iterator->status, block)) |
3049 | 0 | return false; |
3050 | | |
3051 | 222 | if(!write_metadata_block_data_(iterator->file, &iterator->status, block)) |
3052 | 0 | return false; |
3053 | | |
3054 | 222 | if(0 == (padding = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING))) |
3055 | 0 | return FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
3056 | | |
3057 | 222 | padding->is_last = padding_is_last; |
3058 | 222 | padding->length = padding_length; |
3059 | | |
3060 | 222 | if(!write_metadata_block_header_(iterator->file, &iterator->status, padding)) { |
3061 | 0 | FLAC__metadata_object_delete(padding); |
3062 | 0 | return false; |
3063 | 0 | } |
3064 | | |
3065 | 222 | if(!write_metadata_block_data_(iterator->file, &iterator->status, padding)) { |
3066 | 0 | FLAC__metadata_object_delete(padding); |
3067 | 0 | return false; |
3068 | 0 | } |
3069 | | |
3070 | 222 | FLAC__metadata_object_delete(padding); |
3071 | | |
3072 | 222 | if(0 != fseeko(iterator->file, iterator->offset[iterator->depth], SEEK_SET)) { |
3073 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
3074 | 0 | return false; |
3075 | 0 | } |
3076 | | |
3077 | 222 | return read_metadata_block_header_(iterator); |
3078 | 222 | } |
3079 | | |
3080 | | FLAC__bool rewrite_whole_file_(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, FLAC__bool append) |
3081 | 381 | { |
3082 | 381 | FILE *tempfile = NULL; |
3083 | 381 | char *tempfilename = NULL; |
3084 | 381 | int fixup_is_last_code = 0; /* 0 => no need to change any is_last flags */ |
3085 | 381 | FLAC__off_t fixup_is_last_flag_offset = -1; |
3086 | | |
3087 | 381 | FLAC__ASSERT(0 != block || append == false); |
3088 | | |
3089 | 381 | if(iterator->is_last) { |
3090 | 203 | if(append) { |
3091 | 149 | fixup_is_last_code = 1; /* 1 => clear the is_last flag at the following offset */ |
3092 | 149 | fixup_is_last_flag_offset = iterator->offset[iterator->depth]; |
3093 | 149 | } |
3094 | 54 | else if(0 == block) { |
3095 | 47 | simple_iterator_push_(iterator); |
3096 | 47 | if(!FLAC__metadata_simple_iterator_prev(iterator)) { |
3097 | 0 | (void)simple_iterator_pop_(iterator); |
3098 | 0 | return false; |
3099 | 0 | } |
3100 | 47 | fixup_is_last_code = -1; /* -1 => set the is_last the flag at the following offset */ |
3101 | 47 | fixup_is_last_flag_offset = iterator->offset[iterator->depth]; |
3102 | 47 | if(!simple_iterator_pop_(iterator)) |
3103 | 0 | return false; |
3104 | 47 | } |
3105 | 203 | } |
3106 | | |
3107 | 381 | if(!simple_iterator_copy_file_prefix_(iterator, &tempfile, &tempfilename, append)) |
3108 | 33 | return false; |
3109 | | |
3110 | 348 | if(0 != block) { |
3111 | 286 | if(!write_metadata_block_header_(tempfile, &iterator->status, block)) { |
3112 | 0 | cleanup_tempfile_(&tempfile, &tempfilename); |
3113 | 0 | return false; |
3114 | 0 | } |
3115 | | |
3116 | 286 | if(!write_metadata_block_data_(tempfile, &iterator->status, block)) { |
3117 | 0 | cleanup_tempfile_(&tempfile, &tempfilename); |
3118 | 0 | return false; |
3119 | 0 | } |
3120 | 286 | } |
3121 | | |
3122 | 348 | if(!simple_iterator_copy_file_postfix_(iterator, &tempfile, &tempfilename, fixup_is_last_code, fixup_is_last_flag_offset, block==0)) |
3123 | 0 | return false; |
3124 | | |
3125 | 348 | if(append) |
3126 | 242 | return FLAC__metadata_simple_iterator_next(iterator); |
3127 | | |
3128 | 106 | return true; |
3129 | 348 | } |
3130 | | |
3131 | | void simple_iterator_push_(FLAC__Metadata_SimpleIterator *iterator) |
3132 | 345 | { |
3133 | 345 | FLAC__ASSERT(iterator->depth+1 < SIMPLE_ITERATOR_MAX_PUSH_DEPTH); |
3134 | 345 | iterator->offset[iterator->depth+1] = iterator->offset[iterator->depth]; |
3135 | 345 | iterator->depth++; |
3136 | 345 | } |
3137 | | |
3138 | | FLAC__bool simple_iterator_pop_(FLAC__Metadata_SimpleIterator *iterator) |
3139 | 631 | { |
3140 | 631 | FLAC__ASSERT(iterator->depth > 0); |
3141 | 631 | iterator->depth--; |
3142 | 631 | if(0 != fseeko(iterator->file, iterator->offset[iterator->depth], SEEK_SET)) { |
3143 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
3144 | 0 | return false; |
3145 | 0 | } |
3146 | | |
3147 | 631 | return read_metadata_block_header_(iterator); |
3148 | 631 | } |
3149 | | |
3150 | | /* return meanings: |
3151 | | * 0: ok |
3152 | | * 1: read error |
3153 | | * 2: seek error |
3154 | | * 3: not a FLAC file |
3155 | | */ |
3156 | | uint32_t seek_to_first_metadata_block_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Seek seek_cb) |
3157 | 39.4k | { |
3158 | 39.4k | FLAC__byte buffer[4]; |
3159 | 39.4k | size_t n; |
3160 | 39.4k | uint32_t i; |
3161 | | |
3162 | 39.4k | FLAC__ASSERT(FLAC__STREAM_SYNC_LENGTH == sizeof(buffer)); |
3163 | | |
3164 | | /* skip any id3v2 tag */ |
3165 | 39.4k | errno = 0; |
3166 | 39.4k | n = read_cb(buffer, 1, 4, handle); |
3167 | 39.4k | if(errno) |
3168 | 89 | return 1; |
3169 | 39.3k | else if(n != 4) |
3170 | 855 | return 3; |
3171 | 38.5k | else if(0 == memcmp(buffer, "ID3", 3)) { |
3172 | 397 | uint32_t tag_length = 0; |
3173 | | |
3174 | | /* skip to the tag length */ |
3175 | 397 | if(seek_cb(handle, 2, SEEK_CUR) < 0) |
3176 | 0 | return 2; |
3177 | | |
3178 | | /* read the length */ |
3179 | 1.29k | for(i = 0; i < 4; i++) { |
3180 | 1.16k | if(read_cb(buffer, 1, 1, handle) < 1 || buffer[0] & 0x80) |
3181 | 267 | return 1; |
3182 | 897 | tag_length <<= 7; |
3183 | 897 | tag_length |= (buffer[0] & 0x7f); |
3184 | 897 | } |
3185 | | |
3186 | | /* skip the rest of the tag */ |
3187 | 130 | if(seek_cb(handle, tag_length, SEEK_CUR) < 0) |
3188 | 0 | return 2; |
3189 | | |
3190 | | /* read the stream sync code */ |
3191 | 130 | errno = 0; |
3192 | 130 | n = read_cb(buffer, 1, 4, handle); |
3193 | 130 | if(errno) |
3194 | 0 | return 1; |
3195 | 130 | else if(n != 4) |
3196 | 46 | return 3; |
3197 | 130 | } |
3198 | | |
3199 | | /* check for the fLaC signature */ |
3200 | 38.1k | if(0 == memcmp(FLAC__STREAM_SYNC_STRING, buffer, FLAC__STREAM_SYNC_LENGTH)) |
3201 | 34.6k | return 0; |
3202 | 3.52k | else |
3203 | 3.52k | return 3; |
3204 | 38.1k | } |
3205 | | |
3206 | | uint32_t seek_to_first_metadata_block_(FILE *f) |
3207 | 14.6k | { |
3208 | 14.6k | return seek_to_first_metadata_block_cb_((FLAC__IOHandle)f, (FLAC__IOCallback_Read)fread, fseek_wrapper_); |
3209 | 14.6k | } |
3210 | | |
3211 | | FLAC__bool simple_iterator_copy_file_prefix_(FLAC__Metadata_SimpleIterator *iterator, FILE **tempfile, char **tempfilename, FLAC__bool append) |
3212 | 381 | { |
3213 | 381 | const FLAC__off_t offset_end = append? iterator->offset[iterator->depth] + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH + (FLAC__off_t)iterator->length : iterator->offset[iterator->depth]; |
3214 | | |
3215 | 381 | if(0 != fseeko(iterator->file, 0, SEEK_SET)) { |
3216 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
3217 | 0 | return false; |
3218 | 0 | } |
3219 | 381 | if(!open_tempfile_(iterator->filename, iterator->tempfile_path_prefix, tempfile, tempfilename, &iterator->status)) { |
3220 | 0 | cleanup_tempfile_(tempfile, tempfilename); |
3221 | 0 | return false; |
3222 | 0 | } |
3223 | 381 | if(!copy_n_bytes_from_file_(iterator->file, *tempfile, offset_end, &iterator->status)) { |
3224 | 33 | cleanup_tempfile_(tempfile, tempfilename); |
3225 | 33 | return false; |
3226 | 33 | } |
3227 | | |
3228 | 348 | return true; |
3229 | 381 | } |
3230 | | |
3231 | | FLAC__bool simple_iterator_copy_file_postfix_(FLAC__Metadata_SimpleIterator *iterator, FILE **tempfile, char **tempfilename, int fixup_is_last_code, FLAC__off_t fixup_is_last_flag_offset, FLAC__bool backup) |
3232 | 348 | { |
3233 | 348 | FLAC__off_t save_offset = iterator->offset[iterator->depth]; |
3234 | 348 | FLAC__ASSERT(0 != *tempfile); |
3235 | | |
3236 | 348 | if(0 != fseeko(iterator->file, save_offset + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH + (FLAC__off_t)iterator->length, SEEK_SET)) { |
3237 | 0 | cleanup_tempfile_(tempfile, tempfilename); |
3238 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
3239 | 0 | return false; |
3240 | 0 | } |
3241 | 348 | if(!copy_remaining_bytes_from_file_(iterator->file, *tempfile, &iterator->status)) { |
3242 | 0 | cleanup_tempfile_(tempfile, tempfilename); |
3243 | 0 | return false; |
3244 | 0 | } |
3245 | | |
3246 | 348 | if(fixup_is_last_code != 0) { |
3247 | | /* |
3248 | | * if code == 1, it means a block was appended to the end so |
3249 | | * we have to clear the is_last flag of the previous block |
3250 | | * if code == -1, it means the last block was deleted so |
3251 | | * we have to set the is_last flag of the previous block |
3252 | | */ |
3253 | | /* MAGIC NUMBERs here; we know the is_last flag is the high bit of the byte at this location */ |
3254 | 168 | FLAC__byte x; |
3255 | 168 | if(0 != fseeko(*tempfile, fixup_is_last_flag_offset, SEEK_SET)) { |
3256 | 0 | cleanup_tempfile_(tempfile, tempfilename); |
3257 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
3258 | 0 | return false; |
3259 | 0 | } |
3260 | 168 | if(fread(&x, 1, 1, *tempfile) != 1) { |
3261 | 0 | cleanup_tempfile_(tempfile, tempfilename); |
3262 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
3263 | 0 | return false; |
3264 | 0 | } |
3265 | 168 | if(fixup_is_last_code > 0) { |
3266 | 121 | FLAC__ASSERT(x & 0x80); |
3267 | 121 | x &= 0x7f; |
3268 | 121 | } |
3269 | 47 | else { |
3270 | 47 | FLAC__ASSERT(!(x & 0x80)); |
3271 | 47 | x |= 0x80; |
3272 | 47 | } |
3273 | 168 | if(0 != fseeko(*tempfile, fixup_is_last_flag_offset, SEEK_SET)) { |
3274 | 0 | cleanup_tempfile_(tempfile, tempfilename); |
3275 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR; |
3276 | 0 | return false; |
3277 | 0 | } |
3278 | 168 | if(local__fwrite(&x, 1, 1, *tempfile) != 1) { |
3279 | 0 | cleanup_tempfile_(tempfile, tempfilename); |
3280 | 0 | iterator->status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
3281 | 0 | return false; |
3282 | 0 | } |
3283 | 168 | } |
3284 | | |
3285 | 348 | (void)fclose(iterator->file); |
3286 | | |
3287 | 348 | if(!transport_tempfile_(iterator->filename, tempfile, tempfilename, &iterator->status)) |
3288 | 0 | return false; |
3289 | | |
3290 | 348 | if(iterator->has_stats) |
3291 | 159 | set_file_stats_(iterator->filename, &iterator->stats); |
3292 | | |
3293 | 348 | if(!simple_iterator_prime_input_(iterator, !iterator->is_writable)) |
3294 | 0 | return false; |
3295 | 348 | if(backup) { |
3296 | 140 | while(iterator->offset[iterator->depth] + (FLAC__off_t)FLAC__STREAM_METADATA_HEADER_LENGTH + (FLAC__off_t)iterator->length < save_offset) |
3297 | 78 | if(!FLAC__metadata_simple_iterator_next(iterator)) |
3298 | 0 | return false; |
3299 | 62 | return true; |
3300 | 62 | } |
3301 | 286 | else { |
3302 | | /* move the iterator to it's original block faster by faking a push, then doing a pop_ */ |
3303 | 286 | FLAC__ASSERT(iterator->depth == 0); |
3304 | 286 | iterator->offset[0] = save_offset; |
3305 | 286 | iterator->depth++; |
3306 | 286 | return simple_iterator_pop_(iterator); |
3307 | 286 | } |
3308 | 348 | } |
3309 | | |
3310 | | FLAC__bool copy_n_bytes_from_file_(FILE *file, FILE *tempfile, FLAC__off_t bytes, FLAC__Metadata_SimpleIteratorStatus *status) |
3311 | 2.98k | { |
3312 | 2.98k | FLAC__byte buffer[8192]; |
3313 | 2.98k | size_t n; |
3314 | | |
3315 | 2.98k | FLAC__ASSERT(bytes >= 0); |
3316 | 81.6k | while(bytes > 0) { |
3317 | 78.7k | n = flac_min(sizeof(buffer), (size_t)bytes); |
3318 | 78.7k | if(fread(buffer, 1, n, file) != n) { |
3319 | 33 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
3320 | 33 | return false; |
3321 | 33 | } |
3322 | 78.6k | if(local__fwrite(buffer, 1, n, tempfile) != n) { |
3323 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
3324 | 0 | return false; |
3325 | 0 | } |
3326 | 78.6k | bytes -= n; |
3327 | 78.6k | } |
3328 | | |
3329 | 2.94k | return true; |
3330 | 2.98k | } |
3331 | | |
3332 | | FLAC__bool copy_n_bytes_from_file_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOHandle temp_handle, FLAC__IOCallback_Write temp_write_cb, FLAC__off_t bytes, FLAC__Metadata_SimpleIteratorStatus *status) |
3333 | 0 | { |
3334 | 0 | FLAC__byte buffer[8192]; |
3335 | 0 | size_t n; |
3336 | |
|
3337 | 0 | FLAC__ASSERT(bytes >= 0); |
3338 | 0 | while(bytes > 0) { |
3339 | 0 | n = flac_min(sizeof(buffer), (size_t)bytes); |
3340 | 0 | if(read_cb(buffer, 1, n, handle) != n) { |
3341 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
3342 | 0 | return false; |
3343 | 0 | } |
3344 | 0 | if(temp_write_cb(buffer, 1, n, temp_handle) != n) { |
3345 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
3346 | 0 | return false; |
3347 | 0 | } |
3348 | 0 | bytes -= n; |
3349 | 0 | } |
3350 | | |
3351 | 0 | return true; |
3352 | 0 | } |
3353 | | |
3354 | | FLAC__bool copy_remaining_bytes_from_file_(FILE *file, FILE *tempfile, FLAC__Metadata_SimpleIteratorStatus *status) |
3355 | 2.94k | { |
3356 | 2.94k | FLAC__byte buffer[8192]; |
3357 | 2.94k | size_t n; |
3358 | | |
3359 | 18.6k | while(!feof(file)) { |
3360 | 15.7k | n = fread(buffer, 1, sizeof(buffer), file); |
3361 | 15.7k | if(n == 0 && !feof(file)) { |
3362 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
3363 | 0 | return false; |
3364 | 0 | } |
3365 | 15.7k | if(n > 0 && local__fwrite(buffer, 1, n, tempfile) != n) { |
3366 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
3367 | 0 | return false; |
3368 | 0 | } |
3369 | 15.7k | } |
3370 | | |
3371 | 2.94k | return true; |
3372 | 2.94k | } |
3373 | | |
3374 | | FLAC__bool copy_remaining_bytes_from_file_cb_(FLAC__IOHandle handle, FLAC__IOCallback_Read read_cb, FLAC__IOCallback_Eof eof_cb, FLAC__IOHandle temp_handle, FLAC__IOCallback_Write temp_write_cb, FLAC__Metadata_SimpleIteratorStatus *status) |
3375 | 0 | { |
3376 | 0 | FLAC__byte buffer[8192]; |
3377 | 0 | size_t n; |
3378 | |
|
3379 | 0 | while(!eof_cb(handle)) { |
3380 | 0 | n = read_cb(buffer, 1, sizeof(buffer), handle); |
3381 | 0 | if(n == 0 && !eof_cb(handle)) { |
3382 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR; |
3383 | 0 | return false; |
3384 | 0 | } |
3385 | 0 | if(n > 0 && temp_write_cb(buffer, 1, n, temp_handle) != n) { |
3386 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR; |
3387 | 0 | return false; |
3388 | 0 | } |
3389 | 0 | } |
3390 | | |
3391 | 0 | return true; |
3392 | 0 | } |
3393 | | |
3394 | | static int |
3395 | | local_snprintf(char *str, size_t size, const char *fmt, ...) |
3396 | 2.98k | { |
3397 | 2.98k | va_list va; |
3398 | 2.98k | int rc; |
3399 | | |
3400 | | #if defined _MSC_VER |
3401 | | if (size == 0) |
3402 | | return 1024; |
3403 | | #endif |
3404 | | |
3405 | 2.98k | va_start (va, fmt); |
3406 | | |
3407 | | #if defined _MSC_VER |
3408 | | rc = vsnprintf_s (str, size, _TRUNCATE, fmt, va); |
3409 | | if (rc < 0) |
3410 | | rc = size - 1; |
3411 | | #elif defined __MINGW32__ |
3412 | | rc = __mingw_vsnprintf (str, size, fmt, va); |
3413 | | #else |
3414 | 2.98k | rc = vsnprintf (str, size, fmt, va); |
3415 | 2.98k | #endif |
3416 | 2.98k | va_end (va); |
3417 | | |
3418 | 2.98k | return rc; |
3419 | 2.98k | } |
3420 | | |
3421 | | FLAC__bool open_tempfile_(const char *filename, const char *tempfile_path_prefix, FILE **tempfile, char **tempfilename, FLAC__Metadata_SimpleIteratorStatus *status) |
3422 | 2.98k | { |
3423 | 2.98k | static const char *tempfile_suffix = ".metadata_edit"; |
3424 | 2.98k | if(0 == tempfile_path_prefix) { |
3425 | 2.98k | size_t dest_len = strlen(filename) + strlen(tempfile_suffix) + 1; |
3426 | 2.98k | if(0 == (*tempfilename = safe_malloc_(dest_len))) { |
3427 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
3428 | 0 | return false; |
3429 | 0 | } |
3430 | 2.98k | local_snprintf(*tempfilename, dest_len, "%s%s", filename, tempfile_suffix); |
3431 | 2.98k | } |
3432 | 0 | else { |
3433 | 0 | const char *p = strrchr(filename, '/'); |
3434 | 0 | size_t dest_len; |
3435 | 0 | if(0 == p) |
3436 | 0 | p = filename; |
3437 | 0 | else |
3438 | 0 | p++; |
3439 | |
|
3440 | 0 | dest_len = strlen(tempfile_path_prefix) + strlen(p) + strlen(tempfile_suffix) + 2; |
3441 | |
|
3442 | 0 | if(0 == (*tempfilename = safe_malloc_(dest_len))) { |
3443 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR; |
3444 | 0 | return false; |
3445 | 0 | } |
3446 | 0 | local_snprintf(*tempfilename, dest_len, "%s/%s%s", tempfile_path_prefix, p, tempfile_suffix); |
3447 | 0 | } |
3448 | | |
3449 | 2.98k | if(0 == (*tempfile = flac_fopen(*tempfilename, "w+b"))) { |
3450 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE; |
3451 | 0 | return false; |
3452 | 0 | } |
3453 | | |
3454 | 2.98k | return true; |
3455 | 2.98k | } |
3456 | | |
3457 | | FLAC__bool transport_tempfile_(const char *filename, FILE **tempfile, char **tempfilename, FLAC__Metadata_SimpleIteratorStatus *status) |
3458 | 2.94k | { |
3459 | 2.94k | FLAC__ASSERT(0 != filename); |
3460 | 2.94k | FLAC__ASSERT(0 != tempfile); |
3461 | 2.94k | FLAC__ASSERT(0 != *tempfile); |
3462 | 2.94k | FLAC__ASSERT(0 != tempfilename); |
3463 | 2.94k | FLAC__ASSERT(0 != *tempfilename); |
3464 | 2.94k | FLAC__ASSERT(0 != status); |
3465 | | |
3466 | 2.94k | (void)fclose(*tempfile); |
3467 | 2.94k | *tempfile = 0; |
3468 | | |
3469 | | #if defined _MSC_VER || defined __BORLANDC__ || defined __MINGW32__ || defined __EMX__ |
3470 | | /* on some flavors of windows, flac_rename() will fail if the destination already exists */ |
3471 | | if(flac_unlink(filename) < 0) { |
3472 | | cleanup_tempfile_(tempfile, tempfilename); |
3473 | | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_UNLINK_ERROR; |
3474 | | return false; |
3475 | | } |
3476 | | #endif |
3477 | | |
3478 | | /*@@@ to fully support the tempfile_path_prefix we need to update this piece to actually copy across filesystems instead of just flac_rename(): */ |
3479 | 2.94k | if(0 != flac_rename(*tempfilename, filename)) { |
3480 | 0 | cleanup_tempfile_(tempfile, tempfilename); |
3481 | 0 | *status = FLAC__METADATA_SIMPLE_ITERATOR_STATUS_RENAME_ERROR; |
3482 | 0 | return false; |
3483 | 0 | } |
3484 | | |
3485 | 2.94k | cleanup_tempfile_(tempfile, tempfilename); |
3486 | | |
3487 | 2.94k | return true; |
3488 | 2.94k | } |
3489 | | |
3490 | | void cleanup_tempfile_(FILE **tempfile, char **tempfilename) |
3491 | 2.98k | { |
3492 | 2.98k | if(0 != *tempfile) { |
3493 | 33 | (void)fclose(*tempfile); |
3494 | 33 | *tempfile = 0; |
3495 | 33 | } |
3496 | | |
3497 | 2.98k | if(0 != *tempfilename) { |
3498 | 2.98k | (void)flac_unlink(*tempfilename); |
3499 | 2.98k | free(*tempfilename); |
3500 | 2.98k | *tempfilename = 0; |
3501 | 2.98k | } |
3502 | 2.98k | } |
3503 | | |
3504 | | FLAC__bool get_file_stats_(const char *filename, struct flac_stat_s *stats) |
3505 | 1.57k | { |
3506 | 1.57k | FLAC__ASSERT(0 != filename); |
3507 | 1.57k | FLAC__ASSERT(0 != stats); |
3508 | 1.57k | return (0 == flac_stat(filename, stats)); |
3509 | 1.57k | } |
3510 | | |
3511 | | void set_file_stats_(const char *filename, struct flac_stat_s *stats) |
3512 | 1.73k | { |
3513 | 1.73k | #if defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 200809L) && !defined(_WIN32) |
3514 | 1.73k | struct timespec srctime[2] = {}; |
3515 | 1.73k | srctime[0].tv_sec = stats->st_atime; |
3516 | 1.73k | srctime[1].tv_sec = stats->st_mtime; |
3517 | | #else |
3518 | | struct utimbuf srctime; |
3519 | | srctime.actime = stats->st_atime; |
3520 | | srctime.modtime = stats->st_mtime; |
3521 | | #endif |
3522 | | |
3523 | 1.73k | FLAC__ASSERT(0 != filename); |
3524 | 1.73k | FLAC__ASSERT(0 != stats); |
3525 | | |
3526 | 1.73k | (void)flac_chmod(filename, stats->st_mode); |
3527 | 1.73k | (void)flac_utime(filename, &srctime); |
3528 | 1.73k | #if !defined _MSC_VER && !defined __BORLANDC__ && !defined __MINGW32__ |
3529 | 1.73k | FLAC_CHECK_RETURN(chown(filename, stats->st_uid, -1)); |
3530 | 1.73k | FLAC_CHECK_RETURN(chown(filename, -1, stats->st_gid)); |
3531 | 1.73k | #endif |
3532 | 1.73k | } |
3533 | | |
3534 | | int fseek_wrapper_(FLAC__IOHandle handle, FLAC__int64 offset, int whence) |
3535 | 58.3k | { |
3536 | 58.3k | return fseeko((FILE*)handle, (FLAC__off_t)offset, whence); |
3537 | 58.3k | } |
3538 | | |
3539 | | FLAC__int64 ftell_wrapper_(FLAC__IOHandle handle) |
3540 | 43.7k | { |
3541 | 43.7k | return ftello((FILE*)handle); |
3542 | 43.7k | } |
3543 | | |
3544 | | FLAC__Metadata_ChainStatus get_equivalent_status_(FLAC__Metadata_SimpleIteratorStatus status) |
3545 | 1.30M | { |
3546 | 1.30M | switch(status) { |
3547 | 1.30M | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK: |
3548 | 1.30M | return FLAC__METADATA_CHAIN_STATUS_OK; |
3549 | 0 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT: |
3550 | 0 | return FLAC__METADATA_CHAIN_STATUS_ILLEGAL_INPUT; |
3551 | 0 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE: |
3552 | 0 | return FLAC__METADATA_CHAIN_STATUS_ERROR_OPENING_FILE; |
3553 | 0 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_A_FLAC_FILE: |
3554 | 0 | return FLAC__METADATA_CHAIN_STATUS_NOT_A_FLAC_FILE; |
3555 | 0 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_WRITABLE: |
3556 | 0 | return FLAC__METADATA_CHAIN_STATUS_NOT_WRITABLE; |
3557 | 870 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA: |
3558 | 870 | return FLAC__METADATA_CHAIN_STATUS_BAD_METADATA; |
3559 | 2.04k | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR: |
3560 | 2.04k | return FLAC__METADATA_CHAIN_STATUS_READ_ERROR; |
3561 | 0 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR: |
3562 | 0 | return FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR; |
3563 | 0 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR: |
3564 | 0 | return FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR; |
3565 | 0 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_RENAME_ERROR: |
3566 | 0 | return FLAC__METADATA_CHAIN_STATUS_RENAME_ERROR; |
3567 | 0 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_UNLINK_ERROR: |
3568 | 0 | return FLAC__METADATA_CHAIN_STATUS_UNLINK_ERROR; |
3569 | 0 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR: |
3570 | 0 | return FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR; |
3571 | 0 | case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_INTERNAL_ERROR: |
3572 | 0 | default: |
3573 | 0 | return FLAC__METADATA_CHAIN_STATUS_INTERNAL_ERROR; |
3574 | 1.30M | } |
3575 | 1.30M | } |