/src/ffmpeg/libavformat/demux_utils.c

Source
/*
 * Various utility demuxing functions
 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <inttypes.h>

#include "libavutil/mem.h"

#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavcodec/bytestream.h"
#include "packet_internal.h"
#include "avformat.h"
#include "avformat_internal.h"
#include "avio_internal.h"
#include "demux.h"
#include "internal.h"

struct AVCodecParserContext *av_stream_get_parser(const AVStream *st)
{
    return cffstream(st)->parser;
}

void avpriv_stream_set_need_parsing(AVStream *st, enum AVStreamParseType type)
{
    ffstream(st)->need_parsing = type;
}

AVChapter *avpriv_new_chapter(AVFormatContext *s, int64_t id, AVRational time_base,
                              int64_t start, int64_t end, const char *title)
{
    FormatContextInternal *const fci = ff_fc_internal(s);
    AVChapter *chapter = NULL;
    int ret;

    if (end != AV_NOPTS_VALUE && start > end) {
        av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
        return NULL;
    }

    if (!s->nb_chapters) {
        fci->chapter_ids_monotonic = 1;
    } else if (!fci->chapter_ids_monotonic || s->chapters[s->nb_chapters-1]->id >= id) {
        for (unsigned i = 0; i < s->nb_chapters; i++)
            if (s->chapters[i]->id == id)
                chapter = s->chapters[i];
        if (!chapter)
            fci->chapter_ids_monotonic = 0;
    }

    if (!chapter) {
        chapter = av_mallocz(sizeof(*chapter));
        if (!chapter)
            return NULL;
        ret = av_dynarray_add_nofree(&s->chapters, &s->nb_chapters, chapter);
        if (ret < 0) {
            av_free(chapter);
            return NULL;
        }
    }
    av_dict_set(&chapter->metadata, "title", title, 0);
    chapter->id        = id;
    chapter->time_base = time_base;
    chapter->start     = start;
    chapter->end       = end;

    return chapter;
}

int avformat_queue_attached_pictures(AVFormatContext *s)
{
    FormatContextInternal *const fci = ff_fc_internal(s);
    int ret;
    for (unsigned i = 0; i < s->nb_streams; i++)
        if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
            s->streams[i]->discard < AVDISCARD_ALL) {
            if (s->streams[i]->attached_pic.size <= 0) {
                av_log(s, AV_LOG_WARNING,
                       "Attached picture on stream %d has invalid size, "
                       "ignoring\n", i);
                continue;
            }

            ret = ff_packet_list_put(&fci->raw_packet_buffer,
                                         &s->streams[i]->attached_pic,
                                         av_packet_ref, 0);
            if (ret < 0)
                return ret;
        }
    return 0;
}

int ff_add_attached_pic(AVFormatContext *s, AVStream *st0, AVIOContext *pb,
                        AVBufferRef **buf, int size)
{
    AVStream *st = st0;
    AVPacket *pkt;
    int ret;

    if (!st && !(st = avformat_new_stream(s, NULL)))
        return AVERROR(ENOMEM);
    pkt = &st->attached_pic;
    if (buf) {
        av_assert1(*buf);
        av_packet_unref(pkt);
        pkt->buf  = *buf;
        pkt->data = (*buf)->data;
        pkt->size = (*buf)->size - AV_INPUT_BUFFER_PADDING_SIZE;
        *buf = NULL;
    } else {
        ret = av_get_packet(pb, pkt, size);
        if (ret < 0)
            goto fail;
    }
    st->disposition         |= AV_DISPOSITION_ATTACHED_PIC;
    st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;

    pkt->stream_index = st->index;
    pkt->flags       |= AV_PKT_FLAG_KEY;

    return 0;
fail:
    if (!st0)
        ff_remove_stream(s, st);
    return ret;
}

int ff_add_param_change(AVPacket *pkt, int32_t channels,
                        uint64_t channel_layout, int32_t sample_rate,
                        int32_t width, int32_t height)
{
    uint32_t flags = 0;
    int size = 4;
    uint8_t *data;
    if (!pkt)
        return AVERROR(EINVAL);

    if (sample_rate) {
        size  += 4;
        flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
    }
    if (width || height) {
        size  += 8;
        flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
    }
    data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
    if (!data)
        return AVERROR(ENOMEM);
    bytestream_put_le32(&data, flags);
    if (sample_rate)
        bytestream_put_le32(&data, sample_rate);
    if (width || height) {
        bytestream_put_le32(&data, width);
        bytestream_put_le32(&data, height);
    }
    return 0;
}

int av_read_play(AVFormatContext *s)
{
    if (ffifmt(s->iformat)->read_set_state)
        return ffifmt(s->iformat)->read_set_state(s, FF_INFMT_STATE_PLAY);
    if (s->pb)
        return avio_pause(s->pb, 0);
    return AVERROR(ENOSYS);
}

int av_read_pause(AVFormatContext *s)
{
    if (ffifmt(s->iformat)->read_set_state)
        return ffifmt(s->iformat)->read_set_state(s, FF_INFMT_STATE_PAUSE);
    if (s->pb)
        return avio_pause(s->pb, 1);
    return AVERROR(ENOSYS);
}

int avformat_send_command(AVFormatContext *s, enum AVFormatCommandID id, void *data)
{
    if (ffifmt(s->iformat)->handle_command)
        return ffifmt(s->iformat)->handle_command(s, FF_INFMT_COMMAND_SUBMIT, id, data);
    return AVERROR(ENOSYS);
}

int avformat_receive_command_reply(AVFormatContext *s, enum AVFormatCommandID id, void **data_out)
{
    if (ffifmt(s->iformat)->handle_command)
        return ffifmt(s->iformat)->handle_command(s, FF_INFMT_COMMAND_GET_REPLY, id, data_out);
    return AVERROR(ENOSYS);
}

int ff_generate_avci_extradata(AVStream *st)
{
    static const uint8_t avci100_1080p_extradata[] = {
        // SPS
        0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
        0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
        0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
        0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
        0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
        0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
        0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
        0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
        0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        // PPS
        0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
        0xd0
    };
    static const uint8_t avci100_1080i_extradata[] = {
        // SPS
        0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
        0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
        0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
        0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
        0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
        0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
        0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
        0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
        0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
        0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
        0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
        // PPS
        0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
        0xd0
    };
    static const uint8_t avci50_1080p_extradata[] = {
        // SPS
        0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
        0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
        0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
        0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
        0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
        0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
        0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
        0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
        0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
        // PPS
        0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
        0x11
    };
    static const uint8_t avci50_1080i_extradata[] = {
        // SPS
        0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
        0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
        0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
        0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
        0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
        0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
        0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
        0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
        0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
        0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
        0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
        // PPS
        0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
        0x11
    };
    static const uint8_t avci100_720p_extradata[] = {
        // SPS
        0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
        0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
        0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
        0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
        0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
        0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
        0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
        0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
        0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
        0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
        // PPS
        0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
        0x11
    };
    static const uint8_t avci50_720p_extradata[] = {
        // SPS
        0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
        0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
        0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
        0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
        0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
        0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
        0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
        0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
        0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
        // PPS
        0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
        0x11
    };

    const uint8_t *data = NULL;
    int ret, size       = 0;

    if (st->codecpar->width == 1920) {
        if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
            data = avci100_1080p_extradata;
            size = sizeof(avci100_1080p_extradata);
        } else {
            data = avci100_1080i_extradata;
            size = sizeof(avci100_1080i_extradata);
        }
    } else if (st->codecpar->width == 1440) {
        if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
            data = avci50_1080p_extradata;
            size = sizeof(avci50_1080p_extradata);
        } else {
            data = avci50_1080i_extradata;
            size = sizeof(avci50_1080i_extradata);
        }
    } else if (st->codecpar->width == 1280) {
        data = avci100_720p_extradata;
        size = sizeof(avci100_720p_extradata);
    } else if (st->codecpar->width == 960) {
        data = avci50_720p_extradata;
        size = sizeof(avci50_720p_extradata);
    }

    if (!size)
        return 0;

    if ((ret = ff_alloc_extradata(st->codecpar, size)) < 0)
        return ret;
    memcpy(st->codecpar->extradata, data, size);

    return 0;
}

int ff_get_extradata(void *logctx, AVCodecParameters *par, AVIOContext *pb, int size)
{
    int ret = ff_alloc_extradata(par, size);
    if (ret < 0)
        return ret;
    ret = ffio_read_size(pb, par->extradata, size);
    if (ret < 0) {
        av_freep(&par->extradata);
        par->extradata_size = 0;
        av_log(logctx, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
        return ret;
    }

    return ret;
}

int ff_find_stream_index(const AVFormatContext *s, int id)
{
    for (unsigned i = 0; i < s->nb_streams; i++)
        if (s->streams[i]->id == id)
            return i;
    return -1;
}

/* Over nine months at 44.1 kHz; keeps sums and rescalings in range. */
#define SMPB_MAX_SAMPLES (INT64_C(1) << 40)

int ff_itunes_parse_smpb(const char *value, int64_t *priming,
                         int64_t *remainder, int64_t *samples)
{
    uint64_t reserved, p, r, s;
    int end[4];

    /* 16 digits is the widest an uint64_t can take, and what the tag writes. */
    if (sscanf(value, "%16"SCNx64"%n %16"SCNx64"%n %16"SCNx64"%n %16"SCNx64"%n",
               &reserved, &end[0], &p, &end[1], &r, &end[2], &s, &end[3]) != 4)
        return AVERROR_INVALIDDATA;

    /* A field cut short at 16 digits would shift every field after it. */
    for (int i = 0; i < 4; i++)
        if (av_isxdigit(value[end[i]]))
            return AVERROR_INVALIDDATA;

    if (p > SMPB_MAX_SAMPLES || r > SMPB_MAX_SAMPLES || s > SMPB_MAX_SAMPLES)
        return AVERROR_INVALIDDATA;

    *priming   = p;
    *remainder = r;
    *samples   = s;

    return 0;
}

Coverage Report

Created: 2026-08-25 06:40

Line	Count	Source
1		/*
2		* Various utility demuxing functions
3		* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4		*
5		* This file is part of FFmpeg.
6		*
7		* FFmpeg is free software; you can redistribute it and/or
8		* modify it under the terms of the GNU Lesser General Public
9		* License as published by the Free Software Foundation; either
10		* version 2.1 of the License, or (at your option) any later version.
11		*
12		* FFmpeg is distributed in the hope that it will be useful,
13		* but WITHOUT ANY WARRANTY; without even the implied warranty of
14		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15		* Lesser General Public License for more details.
16		*
17		* You should have received a copy of the GNU Lesser General Public
18		* License along with FFmpeg; if not, write to the Free Software
19		* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20		*/
21
22		#include <inttypes.h>
23
24		#include "libavutil/mem.h"
25
26		#include "libavutil/avassert.h"
27		#include "libavutil/avstring.h"
28		#include "libavcodec/bytestream.h"
29		#include "packet_internal.h"
30		#include "avformat.h"
31		#include "avformat_internal.h"
32		#include "avio_internal.h"
33		#include "demux.h"
34		#include "internal.h"
35
36		struct AVCodecParserContext av_stream_get_parser(const AVStream st)
37	0	{
38	0	return cffstream(st)->parser;
39	0	}
40
41		void avpriv_stream_set_need_parsing(AVStream *st, enum AVStreamParseType type)
42	0	{
43	0	ffstream(st)->need_parsing = type;
44	0	}
45
46		AVChapter avpriv_new_chapter(AVFormatContext s, int64_t id, AVRational time_base,
47		int64_t start, int64_t end, const char *title)
48	0	{
49	0	FormatContextInternal *const fci = ff_fc_internal(s);
50	0	AVChapter *chapter = NULL;
51	0	int ret;
52
53	0	if (end != AV_NOPTS_VALUE && start > end) {
54	0	av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
55	0	return NULL;
56	0	}
57
58	0	if (!s->nb_chapters) {
59	0	fci->chapter_ids_monotonic = 1;
60	0	} else if (!fci->chapter_ids_monotonic \|\| s->chapters[s->nb_chapters-1]->id >= id) {
61	0	for (unsigned i = 0; i < s->nb_chapters; i++)
62	0	if (s->chapters[i]->id == id)
63	0	chapter = s->chapters[i];
64	0	if (!chapter)
65	0	fci->chapter_ids_monotonic = 0;
66	0	}
67
68	0	if (!chapter) {
69	0	chapter = av_mallocz(sizeof(*chapter));
70	0	if (!chapter)
71	0	return NULL;
72	0	ret = av_dynarray_add_nofree(&s->chapters, &s->nb_chapters, chapter);
73	0	if (ret < 0) {
74	0	av_free(chapter);
75	0	return NULL;
76	0	}
77	0	}
78	0	av_dict_set(&chapter->metadata, "title", title, 0);
79	0	chapter->id = id;
80	0	chapter->time_base = time_base;
81	0	chapter->start = start;
82	0	chapter->end = end;
83
84	0	return chapter;
85	0	}
86
87		int avformat_queue_attached_pictures(AVFormatContext *s)
88	0	{
89	0	FormatContextInternal *const fci = ff_fc_internal(s);
90	0	int ret;
91	0	for (unsigned i = 0; i < s->nb_streams; i++)
92	0	if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
93	0	s->streams[i]->discard < AVDISCARD_ALL) {
94	0	if (s->streams[i]->attached_pic.size <= 0) {
95	0	av_log(s, AV_LOG_WARNING,
96	0	"Attached picture on stream %d has invalid size, "
97	0	"ignoring\n", i);
98	0	continue;
99	0	}
100
101	0	ret = ff_packet_list_put(&fci->raw_packet_buffer,
102	0	&s->streams[i]->attached_pic,
103	0	av_packet_ref, 0);
104	0	if (ret < 0)
105	0	return ret;
106	0	}
107	0	return 0;
108	0	}
109
110		int ff_add_attached_pic(AVFormatContext s, AVStream st0, AVIOContext *pb,
111		AVBufferRef **buf, int size)
112	0	{
113	0	AVStream *st = st0;
114	0	AVPacket *pkt;
115	0	int ret;
116
117	0	if (!st && !(st = avformat_new_stream(s, NULL)))
118	0	return AVERROR(ENOMEM);
119	0	pkt = &st->attached_pic;
120	0	if (buf) {
121	0	av_assert1(*buf);
122	0	av_packet_unref(pkt);
123	0	pkt->buf = *buf;
124	0	pkt->data = (*buf)->data;
125	0	pkt->size = (*buf)->size - AV_INPUT_BUFFER_PADDING_SIZE;
126	0	*buf = NULL;
127	0	} else {
128	0	ret = av_get_packet(pb, pkt, size);
129	0	if (ret < 0)
130	0	goto fail;
131	0	}
132	0	st->disposition \|= AV_DISPOSITION_ATTACHED_PIC;
133	0	st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
134
135	0	pkt->stream_index = st->index;
136	0	pkt->flags \|= AV_PKT_FLAG_KEY;
137
138	0	return 0;
139	0	fail:
140	0	if (!st0)
141	0	ff_remove_stream(s, st);
142	0	return ret;
143	0	}
144
145		int ff_add_param_change(AVPacket *pkt, int32_t channels,
146		uint64_t channel_layout, int32_t sample_rate,
147		int32_t width, int32_t height)
148	0	{
149	0	uint32_t flags = 0;
150	0	int size = 4;
151	0	uint8_t *data;
152	0	if (!pkt)
153	0	return AVERROR(EINVAL);
154
155	0	if (sample_rate) {
156	0	size += 4;
157	0	flags \|= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
158	0	}
159	0	if (width \|\| height) {
160	0	size += 8;
161	0	flags \|= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
162	0	}
163	0	data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
164	0	if (!data)
165	0	return AVERROR(ENOMEM);
166	0	bytestream_put_le32(&data, flags);
167	0	if (sample_rate)
168	0	bytestream_put_le32(&data, sample_rate);
169	0	if (width \|\| height) {
170	0	bytestream_put_le32(&data, width);
171	0	bytestream_put_le32(&data, height);
172	0	}
173	0	return 0;
174	0	}
175
176		int av_read_play(AVFormatContext *s)
177	0	{
178	0	if (ffifmt(s->iformat)->read_set_state)
179	0	return ffifmt(s->iformat)->read_set_state(s, FF_INFMT_STATE_PLAY);
180	0	if (s->pb)
181	0	return avio_pause(s->pb, 0);
182	0	return AVERROR(ENOSYS);
183	0	}
184
185		int av_read_pause(AVFormatContext *s)
186	0	{
187	0	if (ffifmt(s->iformat)->read_set_state)
188	0	return ffifmt(s->iformat)->read_set_state(s, FF_INFMT_STATE_PAUSE);
189	0	if (s->pb)
190	0	return avio_pause(s->pb, 1);
191	0	return AVERROR(ENOSYS);
192	0	}
193
194		int avformat_send_command(AVFormatContext s, enum AVFormatCommandID id, void data)
195	0	{
196	0	if (ffifmt(s->iformat)->handle_command)
197	0	return ffifmt(s->iformat)->handle_command(s, FF_INFMT_COMMAND_SUBMIT, id, data);
198	0	return AVERROR(ENOSYS);
199	0	}
200
201		int avformat_receive_command_reply(AVFormatContext s, enum AVFormatCommandID id, void *data_out)
202	0	{
203	0	if (ffifmt(s->iformat)->handle_command)
204	0	return ffifmt(s->iformat)->handle_command(s, FF_INFMT_COMMAND_GET_REPLY, id, data_out);
205	0	return AVERROR(ENOSYS);
206	0	}
207
208		int ff_generate_avci_extradata(AVStream *st)
209	0	{
210	0	static const uint8_t avci100_1080p_extradata[] = {
211		// SPS
212	0	0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
213	0	0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
214	0	0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
215	0	0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
216	0	0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
217	0	0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
218	0	0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
219	0	0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
220	0	0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
221		// PPS
222	0	0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
223	0	0xd0
224	0	};
225	0	static const uint8_t avci100_1080i_extradata[] = {
226		// SPS
227	0	0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
228	0	0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
229	0	0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
230	0	0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
231	0	0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
232	0	0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
233	0	0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
234	0	0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
235	0	0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
236	0	0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
237	0	0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
238		// PPS
239	0	0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
240	0	0xd0
241	0	};
242	0	static const uint8_t avci50_1080p_extradata[] = {
243		// SPS
244	0	0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
245	0	0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
246	0	0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
247	0	0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
248	0	0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
249	0	0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
250	0	0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
251	0	0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
252	0	0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
253		// PPS
254	0	0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
255	0	0x11
256	0	};
257	0	static const uint8_t avci50_1080i_extradata[] = {
258		// SPS
259	0	0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
260	0	0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
261	0	0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
262	0	0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
263	0	0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
264	0	0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
265	0	0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
266	0	0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
267	0	0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
268	0	0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
269	0	0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
270		// PPS
271	0	0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
272	0	0x11
273	0	};
274	0	static const uint8_t avci100_720p_extradata[] = {
275		// SPS
276	0	0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
277	0	0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
278	0	0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
279	0	0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
280	0	0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
281	0	0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
282	0	0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
283	0	0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
284	0	0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
285	0	0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
286		// PPS
287	0	0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
288	0	0x11
289	0	};
290	0	static const uint8_t avci50_720p_extradata[] = {
291		// SPS
292	0	0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
293	0	0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
294	0	0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
295	0	0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
296	0	0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
297	0	0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
298	0	0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
299	0	0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
300	0	0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
301		// PPS
302	0	0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
303	0	0x11
304	0	};
305
306	0	const uint8_t *data = NULL;
307	0	int ret, size = 0;
308
309	0	if (st->codecpar->width == 1920) {
310	0	if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
311	0	data = avci100_1080p_extradata;
312	0	size = sizeof(avci100_1080p_extradata);
313	0	} else {
314	0	data = avci100_1080i_extradata;
315	0	size = sizeof(avci100_1080i_extradata);
316	0	}
317	0	} else if (st->codecpar->width == 1440) {
318	0	if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
319	0	data = avci50_1080p_extradata;
320	0	size = sizeof(avci50_1080p_extradata);
321	0	} else {
322	0	data = avci50_1080i_extradata;
323	0	size = sizeof(avci50_1080i_extradata);
324	0	}
325	0	} else if (st->codecpar->width == 1280) {
326	0	data = avci100_720p_extradata;
327	0	size = sizeof(avci100_720p_extradata);
328	0	} else if (st->codecpar->width == 960) {
329	0	data = avci50_720p_extradata;
330	0	size = sizeof(avci50_720p_extradata);
331	0	}
332
333	0	if (!size)
334	0	return 0;
335
336	0	if ((ret = ff_alloc_extradata(st->codecpar, size)) < 0)
337	0	return ret;
338	0	memcpy(st->codecpar->extradata, data, size);
339
340	0	return 0;
341	0	}
342
343		int ff_get_extradata(void logctx, AVCodecParameters par, AVIOContext *pb, int size)
344	0	{
345	0	int ret = ff_alloc_extradata(par, size);
346	0	if (ret < 0)
347	0	return ret;
348	0	ret = ffio_read_size(pb, par->extradata, size);
349	0	if (ret < 0) {
350	0	av_freep(&par->extradata);
351	0	par->extradata_size = 0;
352	0	av_log(logctx, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
353	0	return ret;
354	0	}
355
356	0	return ret;
357	0	}
358
359		int ff_find_stream_index(const AVFormatContext *s, int id)
360	0	{
361	0	for (unsigned i = 0; i < s->nb_streams; i++)
362	0	if (s->streams[i]->id == id)
363	0	return i;
364	0	return -1;
365	0	}
366
367		/* Over nine months at 44.1 kHz; keeps sums and rescalings in range. */
368	0	#define SMPB_MAX_SAMPLES (INT64_C(1) << 40)
369
370		int ff_itunes_parse_smpb(const char value, int64_t priming,
371		int64_t remainder, int64_t samples)
372	0	{
373	0	uint64_t reserved, p, r, s;
374	0	int end[4];
375
376		/* 16 digits is the widest an uint64_t can take, and what the tag writes. */
377	0	if (sscanf(value, "%16"SCNx64"%n %16"SCNx64"%n %16"SCNx64"%n %16"SCNx64"%n",
378	0	&reserved, &end[0], &p, &end[1], &r, &end[2], &s, &end[3]) != 4)
379	0	return AVERROR_INVALIDDATA;
380
381		/* A field cut short at 16 digits would shift every field after it. */
382	0	for (int i = 0; i < 4; i++)
383	0	if (av_isxdigit(value[end[i]]))
384	0	return AVERROR_INVALIDDATA;
385
386	0	if (p > SMPB_MAX_SAMPLES \|\| r > SMPB_MAX_SAMPLES \|\| s > SMPB_MAX_SAMPLES)
387	0	return AVERROR_INVALIDDATA;
388
389	0	*priming = p;
390	0	*remainder = r;
391	0	*samples = s;
392
393	0	return 0;
394	0	}