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Code Issues Releases Activity

lavf/matroskaenc: add automatic bitstream filtering

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This commit is contained in:
Rodger Combs 2015-10-07 21:34:06 -05:00
parent 822e80fde3
commit b287d7ea17
1 changed files with 35 additions and 8 deletions
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43
libavformat/matroskaenc.c
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@ -845,9 +845,6 @@ static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
int j, ret;
AVDictionaryEntry *tag;
// ms precision is the de-facto standard timescale for mkv files
avpriv_set_pts_info(st, 64, 1, 1000);
if (codec->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
mkv->have_attachments = 1;
return 0;
@ -1392,11 +1389,6 @@ static int mkv_write_header(AVFormatContext *s)
else
mkv->mode = MODE_MATROSKAv2;
if (s->avoid_negative_ts < 0) {
s->avoid_negative_ts = 1;
s->internal->avoid_negative_ts_use_pts = 1;
}
if (mkv->mode != MODE_WEBM ||
av_dict_get(s->metadata, "stereo_mode", NULL, 0) ||
av_dict_get(s->metadata, "alpha_mode", NULL, 0))
@ -2102,6 +2094,35 @@ static int mkv_query_codec(enum AVCodecID codec_id, int std_compliance)
return 0;
}
static int mkv_init(struct AVFormatContext *s)
{
int i;
if (s->avoid_negative_ts < 0) {
s->avoid_negative_ts = 1;
s->internal->avoid_negative_ts_use_pts = 1;
}
for (i = 0; i < s->nb_streams; i++) {
// ms precision is the de-facto standard timescale for mkv files
avpriv_set_pts_info(s->streams[i], 64, 1, 1000);
}
return 0;
}
static int mkv_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
{
int ret = 1;
AVStream *st = s->streams[pkt->stream_index];
if (st->codec->codec_id == AV_CODEC_ID_AAC)
if (pkt->size > 2 && (AV_RB16(pkt->data) & 0xfff0) == 0xfff0)
ret = ff_stream_add_bitstream_filter(st, "aac_adtstoasc", NULL);
return ret;
}
static const AVCodecTag additional_audio_tags[] = {
{ AV_CODEC_ID_ALAC, 0XFFFFFFFF },
{ AV_CODEC_ID_EAC3, 0XFFFFFFFF },
@ -2164,6 +2185,7 @@ AVOutputFormat ff_matroska_muxer = {
AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3,
.video_codec = CONFIG_LIBX264_ENCODER ?
AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
.init = mkv_init,
.write_header = mkv_write_header,
.write_packet = mkv_write_flush_packet,
.write_trailer = mkv_write_trailer,
@ -2175,6 +2197,7 @@ AVOutputFormat ff_matroska_muxer = {
},
.subtitle_codec = AV_CODEC_ID_ASS,
.query_codec = mkv_query_codec,
.check_bitstream = mkv_check_bitstream,
.priv_class = &matroska_class,
};
#endif
@ -2196,9 +2219,11 @@ AVOutputFormat ff_webm_muxer = {
.audio_codec = CONFIG_LIBOPUS_ENCODER ? AV_CODEC_ID_OPUS : AV_CODEC_ID_VORBIS,
.video_codec = CONFIG_LIBVPX_VP9_ENCODER? AV_CODEC_ID_VP9 : AV_CODEC_ID_VP8,
.subtitle_codec = AV_CODEC_ID_WEBVTT,
.init = mkv_init,
.write_header = mkv_write_header,
.write_packet = mkv_write_flush_packet,
.write_trailer = mkv_write_trailer,
.check_bitstream = mkv_check_bitstream,
.flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
.priv_class = &webm_class,
@ -2221,9 +2246,11 @@ AVOutputFormat ff_matroska_audio_muxer = {
.audio_codec = CONFIG_LIBVORBIS_ENCODER ?
AV_CODEC_ID_VORBIS : AV_CODEC_ID_AC3,
.video_codec = AV_CODEC_ID_NONE,
.init = mkv_init,
.write_header = mkv_write_header,
.write_packet = mkv_write_flush_packet,
.write_trailer = mkv_write_trailer,
.check_bitstream = mkv_check_bitstream,
.flags = AVFMT_GLOBALHEADER | AVFMT_TS_NONSTRICT |
AVFMT_ALLOW_FLUSH,
.codec_tag = (const AVCodecTag* const []){