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Code Issues Releases Activity

avformat/concatdec: port to the new bitstream filter API

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Reviewed-by: wm4 <nfxjfg@googlemail.com>
Reviewed-by: Aaron Levinson <alevinsn@aracnet.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2017-04-26 00:36:17 -03:00
parent dec2fa8cc7
commit 14e092448f
1 changed files with 31 additions and 65 deletions
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96
libavformat/concatdec.c
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@ -34,8 +34,7 @@ typedef enum ConcatMatchMode {
} ConcatMatchMode;
typedef struct ConcatStream {
AVBitStreamFilterContext *bsf;
AVCodecContext *avctx;
AVBSFContext *bsf;
int out_stream_index;
} ConcatStream;
@ -196,7 +195,8 @@ static int detect_stream_specific(AVFormatContext *avf, int idx)
ConcatContext *cat = avf->priv_data;
AVStream *st = cat->avf->streams[idx];
ConcatStream *cs = &cat->cur_file->streams[idx];
AVBitStreamFilterContext *bsf;
const AVBitStreamFilter *filter;
AVBSFContext *bsf;
int ret;
if (cat->auto_convert && st->codecpar->codec_id == AV_CODEC_ID_H264) {
@ -206,29 +206,28 @@ static int detect_stream_specific(AVFormatContext *avf, int idx)
return 0;
av_log(cat->avf, AV_LOG_INFO,
"Auto-inserting h264_mp4toannexb bitstream filter\n");
if (!(bsf = av_bitstream_filter_init("h264_mp4toannexb"))) {
filter = av_bsf_get_by_name("h264_mp4toannexb");
if (!filter) {
av_log(avf, AV_LOG_ERROR, "h264_mp4toannexb bitstream filter "
"required for H.264 streams\n");
return AVERROR_BSF_NOT_FOUND;
}
ret = av_bsf_alloc(filter, &bsf);
if (ret < 0)
return ret;
cs->bsf = bsf;
cs->avctx = avcodec_alloc_context3(NULL);
if (!cs->avctx)
return AVERROR(ENOMEM);
ret = avcodec_parameters_copy(bsf->par_in, st->codecpar);
if (ret < 0)
return ret;
/* This really should be part of the bsf work.
Note: input bitstream filtering will not work with bsf that
create extradata from the first packet. */
av_freep(&st->codecpar->extradata);
st->codecpar->extradata_size = 0;
ret = avcodec_parameters_to_context(cs->avctx, st->codecpar);
if (ret < 0) {
avcodec_free_context(&cs->avctx);
ret = av_bsf_init(bsf);
if (ret < 0)
return ret;
}
ret = avcodec_parameters_copy(st->codecpar, bsf->par_out);
if (ret < 0)
return ret;
}
return 0;
}
@ -291,8 +290,11 @@ static int match_streams(AVFormatContext *avf)
memset(map + cat->cur_file->nb_streams, 0,
(cat->avf->nb_streams - cat->cur_file->nb_streams) * sizeof(*map));
for (i = cat->cur_file->nb_streams; i < cat->avf->nb_streams; i++)
for (i = cat->cur_file->nb_streams; i < cat->avf->nb_streams; i++) {
map[i].out_stream_index = -1;
if ((ret = detect_stream_specific(avf, i)) < 0)
return ret;
}
switch (cat->stream_match_mode) {
case MATCH_ONE_TO_ONE:
ret = match_streams_one_to_one(avf);
@ -305,9 +307,6 @@ static int match_streams(AVFormatContext *avf)
}
if (ret < 0)
return ret;
for (i = cat->cur_file->nb_streams; i < cat->avf->nb_streams; i++)
if ((ret = detect_stream_specific(avf, i)) < 0)
return ret;
cat->cur_file->nb_streams = cat->avf->nb_streams;
return 0;
}
@ -370,10 +369,8 @@ static int concat_read_close(AVFormatContext *avf)
for (i = 0; i < cat->nb_files; i++) {
av_freep(&cat->files[i].url);
for (j = 0; j < cat->files[i].nb_streams; j++) {
if (cat->files[i].streams[j].avctx)
avcodec_free_context(&cat->files[i].streams[j].avctx);
if (cat->files[i].streams[j].bsf)
av_bitstream_filter_close(cat->files[i].streams[j].bsf);
av_bsf_free(&cat->files[i].streams[j].bsf);
}
av_freep(&cat->files[i].streams);
av_dict_free(&cat->files[i].metadata);
@ -524,56 +521,25 @@ static int open_next_file(AVFormatContext *avf)
static int filter_packet(AVFormatContext *avf, ConcatStream *cs, AVPacket *pkt)
{
AVStream *st = avf->streams[cs->out_stream_index];
AVBitStreamFilterContext *bsf;
AVPacket pkt2;
int ret;
av_assert0(cs->out_stream_index >= 0);
for (bsf = cs->bsf; bsf; bsf = bsf->next) {
pkt2 = *pkt;
ret = av_bitstream_filter_filter(bsf, cs->avctx, NULL,
&pkt2.data, &pkt2.size,
pkt->data, pkt->size,
!!(pkt->flags & AV_PKT_FLAG_KEY));
if (cs->bsf) {
ret = av_bsf_send_packet(cs->bsf, pkt);
if (ret < 0) {
av_log(avf, AV_LOG_ERROR, "h264_mp4toannexb filter "
"failed to send input packet\n");
av_packet_unref(pkt);
return ret;
}
if (cs->avctx->extradata_size > st->codecpar->extradata_size) {
int eret;
if (st->codecpar->extradata)
av_freep(&st->codecpar->extradata);
while (!ret)
ret = av_bsf_receive_packet(cs->bsf, pkt);
eret = ff_alloc_extradata(st->codecpar, cs->avctx->extradata_size);
if (eret < 0) {
av_packet_unref(pkt);
return AVERROR(ENOMEM);
}
st->codecpar->extradata_size = cs->avctx->extradata_size;
memcpy(st->codecpar->extradata, cs->avctx->extradata, cs->avctx->extradata_size);
if (ret < 0 && (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)) {
av_log(avf, AV_LOG_ERROR, "h264_mp4toannexb filter "
"failed to receive output packet\n");
return ret;
}
av_assert0(pkt2.buf);
if (ret == 0 && pkt2.data != pkt->data) {
if ((ret = av_copy_packet(&pkt2, pkt)) < 0) {
av_free(pkt2.data);
return ret;
}
ret = 1;
}
if (ret > 0) {
av_packet_unref(pkt);
pkt2.buf = av_buffer_create(pkt2.data, pkt2.size,
av_buffer_default_free, NULL, 0);
if (!pkt2.buf) {
av_free(pkt2.data);
return AVERROR(ENOMEM);
}
}
*pkt = pkt2;
}
return 0;
}