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/*
* 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 "libavutil/version.h"
#include "libavutil/avassert.h"
#include "libavcodec/bytestream.h"
#include "libavcodec/packet_internal.h"
#include "avformat.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)
{
FFFormatContext *const si = ffformatcontext(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) {
si->chapter_ids_monotonic = 1;
} else if (!si->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)
si->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;
}
void av_format_inject_global_side_data(AVFormatContext *s)
{
FFFormatContext *const si = ffformatcontext(s);
si->inject_global_side_data = 1;
for (unsigned i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
ffstream(st)->inject_global_side_data = 1;
}
}
int avformat_queue_attached_pictures(AVFormatContext *s)
{
FFFormatContext *const si = ffformatcontext(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 = avpriv_packet_list_put(&si->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 FF_API_OLD_CHANNEL_LAYOUT
FF_DISABLE_DEPRECATION_WARNINGS
if (channels) {
size += 4;
flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
}
if (channel_layout) {
size += 8;
flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif
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 FF_API_OLD_CHANNEL_LAYOUT
FF_DISABLE_DEPRECATION_WARNINGS
if (channels)
bytestream_put_le32(&data, channels);
if (channel_layout)
bytestream_put_le64(&data, channel_layout);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
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 (s->iformat->read_play)
return s->iformat->read_play(s);
if (s->pb)
return avio_pause(s->pb, 0);
return AVERROR(ENOSYS);
}
int av_read_pause(AVFormatContext *s)
{
if (s->iformat->read_pause)
return s->iformat->read_pause(s);
if (s->pb)
return avio_pause(s->pb, 1);
return AVERROR(ENOSYS);
}
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