/proc/self/cwd/libfaad/ps_syntax.c

Line	Count	Source
1		/*
2		** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
3		** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com
4		**
5		** This program is free software; you can redistribute it and/or modify
6		** it under the terms of the GNU General Public License as published by
7		** the Free Software Foundation; either version 2 of the License, or
8		** (at your option) any later version.
9		**
10		** This program is distributed in the hope that it will be useful,
11		** but WITHOUT ANY WARRANTY; without even the implied warranty of
12		** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13		** GNU General Public License for more details.
14		**
15		** You should have received a copy of the GNU General Public License
16		** along with this program; if not, write to the Free Software
17		** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18		**
19		** Any non-GPL usage of this software or parts of this software is strictly
20		** forbidden.
21		**
22		** The "appropriate copyright message" mentioned in section 2c of the GPLv2
23		** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com"
24		**
25		** Commercial non-GPL licensing of this software is possible.
26		** For more info contact Nero AG through Mpeg4AAClicense@nero.com.
27		**
28		** $Id: ps_syntax.c,v 1.11 2007/11/01 12:33:33 menno Exp $
29		**/
30
31		#include "common.h"
32
33		#ifdef PS_DEC
34
35		#include "bits.h"
36		#include "ps_dec.h"
37
38		/* type definitaions */
39		typedef const int8_t (*ps_huff_tab)[2];
40
41		/* static data tables */
42		static const uint8_t nr_iid_par_tab[] = {
43		10, 20, 34, 10, 20, 34, 0, 0
44		};
45		static const uint8_t nr_ipdopd_par_tab[] = {
46		5, 11, 17, 5, 11, 17, 0, 0
47		};
48		static const uint8_t nr_icc_par_tab[] = {
49		10, 20, 34, 10, 20, 34, 0, 0
50		};
51		static const uint8_t num_env_tab[][4] = {
52		{ 0, 1, 2, 4 },
53		{ 1, 2, 3, 4 }
54		};
55
56		/* binary lookup huffman tables */
57		static const int8_t f_huff_iid_def[][2] = {
58		{ /0/ -31, 1 }, /* index 0: 1 bits: x */
59		{ 2, 3 }, /* index 1: 2 bits: 1x */
60		{ /1/ -30, /-1/ -32 }, /* index 2: 3 bits: 10x */
61		{ 4, 5 }, /* index 3: 3 bits: 11x */
62		{ /2/ -29, /-2/ -33 }, /* index 4: 4 bits: 110x */
63		{ 6, 7 }, /* index 5: 4 bits: 111x */
64		{ /3/ -28, /-3/ -34 }, /* index 6: 5 bits: 1110x */
65		{ 8, 9 }, /* index 7: 5 bits: 1111x */
66		{ /-4/ -35, /4/ -27 }, /* index 8: 6 bits: 11110x */
67		{ /5/ -26, 10 }, /* index 9: 6 bits: 11111x */
68		{ /-5/ -36, 11 }, /* index 10: 7 bits: 111111x */
69		{ /6/ -25, 12 }, /* index 11: 8 bits: 1111111x */
70		{ /-6/ -37, 13 }, /* index 12: 9 bits: 11111111x */
71		{ /-7/ -38, 14 }, /* index 13: 10 bits: 111111111x */
72		{ /7/ -24, 15 }, /* index 14: 11 bits: 1111111111x */
73		{ 16, 17 }, /* index 15: 12 bits: 11111111111x */
74		{ /8/ -23, /-8/ -39 }, /* index 16: 13 bits: 111111111110x */
75		{ 18, 19 }, /* index 17: 13 bits: 111111111111x */
76		{ /9/ -22, /10/ -21 }, /* index 18: 14 bits: 1111111111110x */
77		{ 20, 21 }, /* index 19: 14 bits: 1111111111111x */
78		{ /-9/ -40, /11/ -20 }, /* index 20: 15 bits: 11111111111110x */
79		{ 22, 23 }, /* index 21: 15 bits: 11111111111111x */
80		{ /-10/ -41, 24 }, /* index 22: 16 bits: 111111111111110x */
81		{ 25, 26 }, /* index 23: 16 bits: 111111111111111x */
82		{ /-11/ -42, /-14/ -45 }, /* index 24: 17 bits: 1111111111111101x */
83		{ /-13/ -44, /-12/ -43 }, /* index 25: 17 bits: 1111111111111110x */
84		{ /12/ -19, 27 }, /* index 26: 17 bits: 1111111111111111x */
85		{ /13/ -18, /14/ -17 } /* index 27: 18 bits: 11111111111111111x */
86		};
87
88		static const int8_t t_huff_iid_def[][2] = {
89		{ /0/ -31, 1 }, /* index 0: 1 bits: x */
90		{ /-1/ -32, 2 }, /* index 1: 2 bits: 1x */
91		{ /1/ -30, 3 }, /* index 2: 3 bits: 11x */
92		{ /-2/ -33, 4 }, /* index 3: 4 bits: 111x */
93		{ /2/ -29, 5 }, /* index 4: 5 bits: 1111x */
94		{ /-3/ -34, 6 }, /* index 5: 6 bits: 11111x */
95		{ /3/ -28, 7 }, /* index 6: 7 bits: 111111x */
96		{ /-4/ -35, 8 }, /* index 7: 8 bits: 1111111x */
97		{ /4/ -27, 9 }, /* index 8: 9 bits: 11111111x */
98		{ /-5/ -36, 10 }, /* index 9: 10 bits: 111111111x */
99		{ /5/ -26, 11 }, /* index 10: 11 bits: 1111111111x */
100		{ /-6/ -37, 12 }, /* index 11: 12 bits: 11111111111x */
101		{ /6/ -25, 13 }, /* index 12: 13 bits: 111111111111x */
102		{ /7/ -24, 14 }, /* index 13: 14 bits: 1111111111111x */
103		{ /-7/ -38, 15 }, /* index 14: 15 bits: 11111111111111x */
104		{ 16, 17 }, /* index 15: 16 bits: 111111111111111x */
105		{ /8/ -23, /-8/ -39 }, /* index 16: 17 bits: 1111111111111110x */
106		{ 18, 19 }, /* index 17: 17 bits: 1111111111111111x */
107		{ 20, 21 }, /* index 18: 18 bits: 11111111111111110x */
108		{ 22, 23 }, /* index 19: 18 bits: 11111111111111111x */
109		{ /9/ -22, /-14/ -45 }, /* index 20: 19 bits: 111111111111111100x */
110		{ /-13/ -44, /-12/ -43 }, /* index 21: 19 bits: 111111111111111101x */
111		{ 24, 25 }, /* index 22: 19 bits: 111111111111111110x */
112		{ 26, 27 }, /* index 23: 19 bits: 111111111111111111x */
113		{ /-11/ -42, /-10/ -41 }, /* index 24: 20 bits: 1111111111111111100x */
114		{ /-9/ -40, /10/ -21 }, /* index 25: 20 bits: 1111111111111111101x */
115		{ /11/ -20, /12/ -19 }, /* index 26: 20 bits: 1111111111111111110x */
116		{ /13/ -18, /14/ -17 } /* index 27: 20 bits: 1111111111111111111x */
117		};
118
119		static const int8_t f_huff_iid_fine[][2] = {
120		{ 1, /0/ -31 }, /* index 0: 1 bits: x */
121		{ 2, 3 }, /* index 1: 2 bits: 0x */
122		{ 4, /-1/ -32 }, /* index 2: 3 bits: 00x */
123		{ /1/ -30, 5 }, /* index 3: 3 bits: 01x */
124		{ /-2/ -33, /2/ -29 }, /* index 4: 4 bits: 000x */
125		{ 6, 7 }, /* index 5: 4 bits: 011x */
126		{ /-3/ -34, /3/ -28 }, /* index 6: 5 bits: 0110x */
127		{ 8, 9 }, /* index 7: 5 bits: 0111x */
128		{ /-4/ -35, /4/ -27 }, /* index 8: 6 bits: 01110x */
129		{ 10, 11 }, /* index 9: 6 bits: 01111x */
130		{ /-5/ -36, /5/ -26 }, /* index 10: 7 bits: 011110x */
131		{ 12, 13 }, /* index 11: 7 bits: 011111x */
132		{ /-6/ -37, /6/ -25 }, /* index 12: 8 bits: 0111110x */
133		{ 14, 15 }, /* index 13: 8 bits: 0111111x */
134		{ /7/ -24, 16 }, /* index 14: 9 bits: 01111110x */
135		{ 17, 18 }, /* index 15: 9 bits: 01111111x */
136		{ 19, /-8/ -39 }, /* index 16: 10 bits: 011111101x */
137		{ /8/ -23, 20 }, /* index 17: 10 bits: 011111110x */
138		{ 21, /-7/ -38 }, /* index 18: 10 bits: 011111111x */
139		{ /10/ -21, 22 }, /* index 19: 11 bits: 0111111010x */
140		{ 23, /-9/ -40 }, /* index 20: 11 bits: 0111111101x */
141		{ /9/ -22, 24 }, /* index 21: 11 bits: 0111111110x */
142		{ /-11/ -42, /11/ -20 }, /* index 22: 12 bits: 01111110101x */
143		{ 25, 26 }, /* index 23: 12 bits: 01111111010x */
144		{ 27, /-10/ -41 }, /* index 24: 12 bits: 01111111101x */
145		{ 28, /-12/ -43 }, /* index 25: 13 bits: 011111110100x */
146		{ /12/ -19, 29 }, /* index 26: 13 bits: 011111110101x */
147		{ 30, 31 }, /* index 27: 13 bits: 011111111010x */
148		{ 32, /-14/ -45 }, /* index 28: 14 bits: 0111111101000x */
149		{ /14/ -17, 33 }, /* index 29: 14 bits: 0111111101011x */
150		{ 34, /-13/ -44 }, /* index 30: 14 bits: 0111111110100x */
151		{ /13/ -18, 35 }, /* index 31: 14 bits: 0111111110101x */
152		{ 36, 37 }, /* index 32: 15 bits: 01111111010000x */
153		{ 38, /-15/ -46 }, /* index 33: 15 bits: 01111111010111x */
154		{ /15/ -16, 39 }, /* index 34: 15 bits: 01111111101000x */
155		{ 40, 41 }, /* index 35: 15 bits: 01111111101011x */
156		{ 42, 43 }, /* index 36: 16 bits: 011111110100000x */
157		{ /-17/ -48, /17/ -14 }, /* index 37: 16 bits: 011111110100001x */
158		{ 44, 45 }, /* index 38: 16 bits: 011111110101110x */
159		{ 46, 47 }, /* index 39: 16 bits: 011111111010001x */
160		{ 48, 49 }, /* index 40: 16 bits: 011111111010110x */
161		{ /-16/ -47, /16/ -15 }, /* index 41: 16 bits: 011111111010111x */
162		{ /-21/ -52, /21/ -10 }, /* index 42: 17 bits: 0111111101000000x */
163		{ /-19/ -50, /19/ -12 }, /* index 43: 17 bits: 0111111101000001x */
164		{ /-18/ -49, /18/ -13 }, /* index 44: 17 bits: 0111111101011100x */
165		{ 50, 51 }, /* index 45: 17 bits: 0111111101011101x */
166		{ 52, 53 }, /* index 46: 17 bits: 0111111110100010x */
167		{ 54, 55 }, /* index 47: 17 bits: 0111111110100011x */
168		{ 56, 57 }, /* index 48: 17 bits: 0111111110101100x */
169		{ 58, 59 }, /* index 49: 17 bits: 0111111110101101x */
170		{ /-26/ -57, /-25/ -56 }, /* index 50: 18 bits: 01111111010111010x */
171		{ /-28/ -59, /-27/ -58 }, /* index 51: 18 bits: 01111111010111011x */
172		{ /-22/ -53, /22/ -9 }, /* index 52: 18 bits: 01111111101000100x */
173		{ /-24/ -55, /-23/ -54 }, /* index 53: 18 bits: 01111111101000101x */
174		{ /25/ -6, /26/ -5 }, /* index 54: 18 bits: 01111111101000110x */
175		{ /23/ -8, /24/ -7 }, /* index 55: 18 bits: 01111111101000111x */
176		{ /29/ -2, /30/ -1 }, /* index 56: 18 bits: 01111111101011000x */
177		{ /27/ -4, /28/ -3 }, /* index 57: 18 bits: 01111111101011001x */
178		{ /-30/ -61, /-29/ -60 }, /* index 58: 18 bits: 01111111101011010x */
179		{ /-20/ -51, /20/ -11 } /* index 59: 18 bits: 01111111101011011x */
180		};
181
182		static const int8_t t_huff_iid_fine[][2] = {
183		{ 1, /0/ -31 }, /* index 0: 1 bits: x */
184		{ /1/ -30, 2 }, /* index 1: 2 bits: 0x */
185		{ 3, /-1/ -32 }, /* index 2: 3 bits: 01x */
186		{ 4, 5 }, /* index 3: 4 bits: 010x */
187		{ 6, 7 }, /* index 4: 5 bits: 0100x */
188		{ /-2/ -33, /2/ -29 }, /* index 5: 5 bits: 0101x */
189		{ 8, /-3/ -34 }, /* index 6: 6 bits: 01000x */
190		{ /3/ -28, 9 }, /* index 7: 6 bits: 01001x */
191		{ /-4/ -35, /4/ -27 }, /* index 8: 7 bits: 010000x */
192		{ 10, 11 }, /* index 9: 7 bits: 010011x */
193		{ /5/ -26, 12 }, /* index 10: 8 bits: 0100110x */
194		{ 13, 14 }, /* index 11: 8 bits: 0100111x */
195		{ /-6/ -37, /6/ -25 }, /* index 12: 9 bits: 01001101x */
196		{ 15, 16 }, /* index 13: 9 bits: 01001110x */
197		{ 17, /-5/ -36 }, /* index 14: 9 bits: 01001111x */
198		{ 18, /-7/ -38 }, /* index 15: 10 bits: 010011100x */
199		{ /7/ -24, 19 }, /* index 16: 10 bits: 010011101x */
200		{ 20, 21 }, /* index 17: 10 bits: 010011110x */
201		{ /9/ -22, 22 }, /* index 18: 11 bits: 0100111000x */
202		{ 23, 24 }, /* index 19: 11 bits: 0100111011x */
203		{ /-8/ -39, /8/ -23 }, /* index 20: 11 bits: 0100111100x */
204		{ 25, 26 }, /* index 21: 11 bits: 0100111101x */
205		{ /11/ -20, 27 }, /* index 22: 12 bits: 01001110001x */
206		{ 28, 29 }, /* index 23: 12 bits: 01001110110x */
207		{ /-10/ -41, /10/ -21 }, /* index 24: 12 bits: 01001110111x */
208		{ 30, 31 }, /* index 25: 12 bits: 01001111010x */
209		{ 32, /-9/ -40 }, /* index 26: 12 bits: 01001111011x */
210		{ 33, /-13/ -44 }, /* index 27: 13 bits: 010011100011x */
211		{ /13/ -18, 34 }, /* index 28: 13 bits: 010011101100x */
212		{ 35, 36 }, /* index 29: 13 bits: 010011101101x */
213		{ 37, /-12/ -43 }, /* index 30: 13 bits: 010011110100x */
214		{ /12/ -19, 38 }, /* index 31: 13 bits: 010011110101x */
215		{ 39, /-11/ -42 }, /* index 32: 13 bits: 010011110110x */
216		{ 40, 41 }, /* index 33: 14 bits: 0100111000110x */
217		{ 42, 43 }, /* index 34: 14 bits: 0100111011001x */
218		{ 44, 45 }, /* index 35: 14 bits: 0100111011010x */
219		{ 46, /-15/ -46 }, /* index 36: 14 bits: 0100111011011x */
220		{ /15/ -16, 47 }, /* index 37: 14 bits: 0100111101000x */
221		{ /-14/ -45, /14/ -17 }, /* index 38: 14 bits: 0100111101011x */
222		{ 48, 49 }, /* index 39: 14 bits: 0100111101100x */
223		{ /-21/ -52, /-20/ -51 }, /* index 40: 15 bits: 01001110001100x */
224		{ /18/ -13, /19/ -12 }, /* index 41: 15 bits: 01001110001101x */
225		{ /-19/ -50, /-18/ -49 }, /* index 42: 15 bits: 01001110110010x */
226		{ 50, 51 }, /* index 43: 15 bits: 01001110110011x */
227		{ 52, 53 }, /* index 44: 15 bits: 01001110110100x */
228		{ 54, 55 }, /* index 45: 15 bits: 01001110110101x */
229		{ 56, /-17/ -48 }, /* index 46: 15 bits: 01001110110110x */
230		{ /17/ -14, 57 }, /* index 47: 15 bits: 01001111010001x */
231		{ 58, /-16/ -47 }, /* index 48: 15 bits: 01001111011000x */
232		{ /16/ -15, 59 }, /* index 49: 15 bits: 01001111011001x */
233		{ /-26/ -57, /26/ -5 }, /* index 50: 16 bits: 010011101100110x */
234		{ /-28/ -59, /-27/ -58 }, /* index 51: 16 bits: 010011101100111x */
235		{ /29/ -2, /30/ -1 }, /* index 52: 16 bits: 010011101101000x */
236		{ /27/ -4, /28/ -3 }, /* index 53: 16 bits: 010011101101001x */
237		{ /-30/ -61, /-29/ -60 }, /* index 54: 16 bits: 010011101101010x */
238		{ /-25/ -56, /25/ -6 }, /* index 55: 16 bits: 010011101101011x */
239		{ /-24/ -55, /24/ -7 }, /* index 56: 16 bits: 010011101101100x */
240		{ /-23/ -54, /23/ -8 }, /* index 57: 16 bits: 010011110100011x */
241		{ /-22/ -53, /22/ -9 }, /* index 58: 16 bits: 010011110110000x */
242		{ /20/ -11, /21/ -10 } /* index 59: 16 bits: 010011110110011x */
243		};
244
245		static const int8_t f_huff_icc[][2] = {
246		{ /0/ -31, 1 }, /* index 0: 1 bits: x */
247		{ /1/ -30, 2 }, /* index 1: 2 bits: 1x */
248		{ /-1/ -32, 3 }, /* index 2: 3 bits: 11x */
249		{ /2/ -29, 4 }, /* index 3: 4 bits: 111x */
250		{ /-2/ -33, 5 }, /* index 4: 5 bits: 1111x */
251		{ /3/ -28, 6 }, /* index 5: 6 bits: 11111x */
252		{ /-3/ -34, 7 }, /* index 6: 7 bits: 111111x */
253		{ /4/ -27, 8 }, /* index 7: 8 bits: 1111111x */
254		{ /5/ -26, 9 }, /* index 8: 9 bits: 11111111x */
255		{ /-4/ -35, 10 }, /* index 9: 10 bits: 111111111x */
256		{ /6/ -25, 11 }, /* index 10: 11 bits: 1111111111x */
257		{ /-5/ -36, 12 }, /* index 11: 12 bits: 11111111111x */
258		{ /7/ -24, 13 }, /* index 12: 13 bits: 111111111111x */
259		{ /-6/ -37, /-7/ -38 } /* index 13: 14 bits: 1111111111111x */
260		};
261
262		static const int8_t t_huff_icc[][2] = {
263		{ /0/ -31, 1 }, /* index 0: 1 bits: x */
264		{ /1/ -30, 2 }, /* index 1: 2 bits: 1x */
265		{ /-1/ -32, 3 }, /* index 2: 3 bits: 11x */
266		{ /2/ -29, 4 }, /* index 3: 4 bits: 111x */
267		{ /-2/ -33, 5 }, /* index 4: 5 bits: 1111x */
268		{ /3/ -28, 6 }, /* index 5: 6 bits: 11111x */
269		{ /-3/ -34, 7 }, /* index 6: 7 bits: 111111x */
270		{ /4/ -27, 8 }, /* index 7: 8 bits: 1111111x */
271		{ /-4/ -35, 9 }, /* index 8: 9 bits: 11111111x */
272		{ /5/ -26, 10 }, /* index 9: 10 bits: 111111111x */
273		{ /-5/ -36, 11 }, /* index 10: 11 bits: 1111111111x */
274		{ /6/ -25, 12 }, /* index 11: 12 bits: 11111111111x */
275		{ /-6/ -37, 13 }, /* index 12: 13 bits: 111111111111x */
276		{ /-7/ -38, /7/ -24 } /* index 13: 14 bits: 1111111111111x */
277		};
278
279		static const int8_t f_huff_ipd[][2] = {
280		{ 1, /0/ -31 }, /* index 0: 1 bits: x */
281		{ 2, 3 }, /* index 1: 2 bits: 0x */
282		{ /1/ -30, 4 }, /* index 2: 3 bits: 00x */
283		{ 5, 6 }, /* index 3: 3 bits: 01x */
284		{ /4/ -27, /5/ -26 }, /* index 4: 4 bits: 001x */
285		{ /3/ -28, /6/ -25 }, /* index 5: 4 bits: 010x */
286		{ /2/ -29, /7/ -24 } /* index 6: 4 bits: 011x */
287		};
288
289		static const int8_t t_huff_ipd[][2] = {
290		{ 1, /0/ -31 }, /* index 0: 1 bits: x */
291		{ 2, 3 }, /* index 1: 2 bits: 0x */
292		{ 4, 5 }, /* index 2: 3 bits: 00x */
293		{ /1/ -30, /7/ -24 }, /* index 3: 3 bits: 01x */
294		{ /5/ -26, 6 }, /* index 4: 4 bits: 000x */
295		{ /2/ -29, /6/ -25 }, /* index 5: 4 bits: 001x */
296		{ /4/ -27, /3/ -28 } /* index 6: 5 bits: 0001x */
297		};
298
299		static const int8_t f_huff_opd[][2] = {
300		{ 1, /0/ -31 }, /* index 0: 1 bits: x */
301		{ 2, 3 }, /* index 1: 2 bits: 0x */
302		{ /7/ -24, /1/ -30 }, /* index 2: 3 bits: 00x */
303		{ 4, 5 }, /* index 3: 3 bits: 01x */
304		{ /3/ -28, /6/ -25 }, /* index 4: 4 bits: 010x */
305		{ /2/ -29, 6 }, /* index 5: 4 bits: 011x */
306		{ /5/ -26, /4/ -27 } /* index 6: 5 bits: 0111x */
307		};
308
309		static const int8_t t_huff_opd[][2] = {
310		{ 1, /0/ -31 }, /* index 0: 1 bits: x */
311		{ 2, 3 }, /* index 1: 2 bits: 0x */
312		{ 4, 5 }, /* index 2: 3 bits: 00x */
313		{ /1/ -30, /7/ -24 }, /* index 3: 3 bits: 01x */
314		{ /5/ -26, /2/ -29 }, /* index 4: 4 bits: 000x */
315		{ /6/ -25, 6 }, /* index 5: 4 bits: 001x */
316		{ /4/ -27, /3/ -28 } /* index 6: 5 bits: 0011x */
317		};
318
319		/* static function declarations */
320		static uint16_t ps_extension(ps_info ps, bitfile ld,
321		const uint8_t ps_extension_id,
322		const uint16_t num_bits_left);
323		static void huff_data(bitfile *ld, const uint8_t dt, const uint8_t nr_par,
324		ps_huff_tab t_huff, ps_huff_tab f_huff, int8_t *par);
325		static INLINE int8_t ps_huff_dec(bitfile *ld, ps_huff_tab t_huff);
326
327
328		uint16_t ps_data(ps_info ps, bitfile ld, uint8_t *header)
329	90.5k	{
330	90.5k	uint8_t tmp, n;
331	90.5k	uint16_t bits = (uint16_t)faad_get_processed_bits(ld);
332
333	90.5k	*header = 0;
334
335		/* check for new PS header */
336	90.5k	if (faad_get1bit(ld
337	90.5k	DEBUGVAR(1,1000,"ps_data(): enable_ps_header")))
338	47.1k	{
339	47.1k	*header = 1;
340
341	47.1k	ps->header_read = 1;
342
343	47.1k	ps->use34hybrid_bands = 0;
344
345		/* Inter-channel Intensity Difference (IID) parameters enabled */
346	47.1k	ps->enable_iid = (uint8_t)faad_get1bit(ld
347	47.1k	DEBUGVAR(1,1001,"ps_data(): enable_iid"));
348
349	47.1k	if (ps->enable_iid)
350	27.2k	{
351	27.2k	ps->iid_mode = (uint8_t)faad_getbits(ld, 3
352	27.2k	DEBUGVAR(1,1002,"ps_data(): iid_mode"));
353
354	27.2k	ps->nr_iid_par = nr_iid_par_tab[ps->iid_mode];
355	27.2k	ps->nr_ipdopd_par = nr_ipdopd_par_tab[ps->iid_mode];
356
357	27.2k	if (ps->iid_mode == 2 \|\| ps->iid_mode == 5)
358	7.36k	ps->use34hybrid_bands = 1;
359
360		/* IPD freq res equal to IID freq res */
361	27.2k	ps->ipd_mode = ps->iid_mode;
362	27.2k	}
363
364		/* Inter-channel Coherence (ICC) parameters enabled */
365	47.1k	ps->enable_icc = (uint8_t)faad_get1bit(ld
366	47.1k	DEBUGVAR(1,1003,"ps_data(): enable_icc"));
367
368	47.1k	if (ps->enable_icc)
369	20.1k	{
370	20.1k	ps->icc_mode = (uint8_t)faad_getbits(ld, 3
371	20.1k	DEBUGVAR(1,1004,"ps_data(): icc_mode"));
372
373	20.1k	ps->nr_icc_par = nr_icc_par_tab[ps->icc_mode];
374
375	20.1k	if (ps->icc_mode == 2 \|\| ps->icc_mode == 5)
376	7.05k	ps->use34hybrid_bands = 1;
377	20.1k	}
378
379		/* PS extension layer enabled */
380	47.1k	ps->enable_ext = (uint8_t)faad_get1bit(ld
381	47.1k	DEBUGVAR(1,1005,"ps_data(): enable_ext"));
382	47.1k	}
383
384		/* we are here, but no header has been read yet */
385	90.5k	if (ps->header_read == 0)
386	14.9k	{
387	14.9k	ps->ps_data_available = 0;
388	14.9k	return 1;
389	14.9k	}
390
391	75.6k	ps->frame_class = (uint8_t)faad_get1bit(ld
392	75.6k	DEBUGVAR(1,1006,"ps_data(): frame_class"));
393	75.6k	tmp = (uint8_t)faad_getbits(ld, 2
394	75.6k	DEBUGVAR(1,1007,"ps_data(): num_env_idx"));
395
396	75.6k	ps->num_env = num_env_tab[ps->frame_class][tmp];
397
398	75.6k	if (ps->frame_class)
399	24.0k	{
400	87.0k	for (n = 1; n < ps->num_env+1; n++)
401	62.9k	{
402	62.9k	ps->border_position[n] = (uint8_t)faad_getbits(ld, 5
403	62.9k	DEBUGVAR(1,1008,"ps_data(): border_position")) + 1;
404	62.9k	}
405	24.0k	}
406
407	75.6k	if (ps->enable_iid)
408	41.1k	{
409	101k	for (n = 0; n < ps->num_env; n++)
410	60.1k	{
411	60.1k	ps->iid_dt[n] = (uint8_t)faad_get1bit(ld
412	60.1k	DEBUGVAR(1,1009,"ps_data(): iid_dt"));
413
414		/* iid_data */
415	60.1k	if (ps->iid_mode < 3)
416	10.2k	{
417	10.2k	huff_data(ld, ps->iid_dt[n], ps->nr_iid_par, t_huff_iid_def,
418	10.2k	f_huff_iid_def, ps->iid_index[n]);
419	49.9k	} else {
420	49.9k	huff_data(ld, ps->iid_dt[n], ps->nr_iid_par, t_huff_iid_fine,
421	49.9k	f_huff_iid_fine, ps->iid_index[n]);
422	49.9k	}
423	60.1k	}
424	41.1k	}
425
426	75.6k	if (ps->enable_icc)
427	30.4k	{
428	82.8k	for (n = 0; n < ps->num_env; n++)
429	52.3k	{
430	52.3k	ps->icc_dt[n] = (uint8_t)faad_get1bit(ld
431	52.3k	DEBUGVAR(1,1010,"ps_data(): icc_dt"));
432
433		/* icc_data */
434	52.3k	huff_data(ld, ps->icc_dt[n], ps->nr_icc_par, t_huff_icc,
435	52.3k	f_huff_icc, ps->icc_index[n]);
436	52.3k	}
437	30.4k	}
438
439	75.6k	if (ps->enable_ext)
440	24.5k	{
441	24.5k	uint16_t num_bits_left;
442	24.5k	uint16_t cnt = (uint16_t)faad_getbits(ld, 4
443	24.5k	DEBUGVAR(1,1011,"ps_data(): ps_extension_size"));
444	24.5k	if (cnt == 15)
445	2.43k	{
446	2.43k	cnt += (uint16_t)faad_getbits(ld, 8
447	2.43k	DEBUGVAR(1,1012,"ps_data(): esc_count"));
448	2.43k	}
449
450	24.5k	num_bits_left = 8 * cnt;
451	52.6M	while (num_bits_left > 7)
452	52.6M	{
453	52.6M	uint8_t ps_extension_id = (uint8_t)faad_getbits(ld, 2
454	52.6M	DEBUGVAR(1,1013,"ps_data(): ps_extension_size"));
455
456	52.6M	num_bits_left -= 2;
457	52.6M	num_bits_left -= ps_extension(ps, ld, ps_extension_id, num_bits_left);
458	52.6M	}
459
460	24.5k	faad_getbits(ld, num_bits_left
461	24.5k	DEBUGVAR(1,1014,"ps_data(): fill_bits"));
462	24.5k	}
463
464	75.6k	bits = (uint16_t)faad_get_processed_bits(ld) - bits;
465
466	75.6k	ps->ps_data_available = 1;
467
468	75.6k	return bits;
469	90.5k	}
470
471		static uint16_t ps_extension(ps_info ps, bitfile ld,
472		const uint8_t ps_extension_id,
473		const uint16_t num_bits_left)
474	52.6M	{
475	52.6M	uint8_t n;
476	52.6M	uint16_t bits = (uint16_t)faad_get_processed_bits(ld);
477	52.6M	(void)num_bits_left; /* TODO: remove parameter, or actually use it. */
478
479	52.6M	if (ps_extension_id == 0)
480	39.0M	{
481	39.0M	ps->enable_ipdopd = (uint8_t)faad_get1bit(ld
482	39.0M	DEBUGVAR(1,1015,"ps_extension(): enable_ipdopd"));
483
484	39.0M	if (ps->enable_ipdopd)
485	1.31M	{
486	5.23M	for (n = 0; n < ps->num_env; n++)
487	3.92M	{
488	3.92M	ps->ipd_dt[n] = (uint8_t)faad_get1bit(ld
489	3.92M	DEBUGVAR(1,1016,"ps_extension(): ipd_dt"));
490
491		/* ipd_data */
492	3.92M	huff_data(ld, ps->ipd_dt[n], ps->nr_ipdopd_par, t_huff_ipd,
493	3.92M	f_huff_ipd, ps->ipd_index[n]);
494
495	3.92M	ps->opd_dt[n] = (uint8_t)faad_get1bit(ld
496	3.92M	DEBUGVAR(1,1017,"ps_extension(): opd_dt"));
497
498		/* opd_data */
499	3.92M	huff_data(ld, ps->opd_dt[n], ps->nr_ipdopd_par, t_huff_opd,
500	3.92M	f_huff_opd, ps->opd_index[n]);
501	3.92M	}
502	1.31M	}
503	39.0M	faad_get1bit(ld
504	39.0M	DEBUGVAR(1,1018,"ps_extension(): reserved_ps"));
505	39.0M	}
506
507		/* return number of bits read */
508	52.6M	bits = (uint16_t)faad_get_processed_bits(ld) - bits;
509
510	52.6M	return bits;
511	52.6M	}
512
513		/* read huffman data coded in either the frequency or the time direction */
514		static void huff_data(bitfile *ld, const uint8_t dt, const uint8_t nr_par,
515		ps_huff_tab t_huff, ps_huff_tab f_huff, int8_t *par)
516	7.95M	{
517	7.95M	uint8_t n;
518
519	7.95M	if (dt)
520	3.73M	{
521		/* coded in time direction */
522	20.6M	for (n = 0; n < nr_par; n++)
523	16.8M	{
524	16.8M	par[n] = ps_huff_dec(ld, t_huff);
525	16.8M	}
526	4.22M	} else {
527		/* coded in frequency direction */
528	4.22M	par[0] = ps_huff_dec(ld, f_huff);
529
530	19.1M	for (n = 1; n < nr_par; n++)
531	14.9M	{
532	14.9M	par[n] = ps_huff_dec(ld, f_huff);
533	14.9M	}
534	4.22M	}
535	7.95M	}
536
537		/* binary search huffman decoding */
538		static INLINE int8_t ps_huff_dec(bitfile *ld, ps_huff_tab t_huff)
539	36.0M	{
540	36.0M	uint8_t bit;
541	36.0M	int8_t index = 0;
542
543	121M	while (index >= 0)
544	85.1M	{
545	85.1M	bit = (uint8_t)faad_get1bit(ld);
546	85.1M	index = t_huff[index][bit];
547	85.1M	}
548
549	36.0M	return index + 31;
550	36.0M	}
551
552		#endif

Coverage Report

Created: 2025-07-11 06:40