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demux_mkv: retrieve timestamps from libavcodec parser

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Fixes vp9 missing timestamps. This requires a brand new libavcodec (the
patch for this was just applied to FFmpeg git master).

The timestamp mangling is applied to VP9 only. It'd probably work with
other codecs, but it's not needed. It could break in various ways, so
it has to be explicitly checked for every enabled codec.
This commit is contained in:
wm4 2015-02-05 21:52:21 +01:00
parent 1f2a370a03
commit 5e9ba816cf
1 changed files with 16 additions and 3 deletions
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19
demux/demux_mkv.c
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@ -119,7 +119,7 @@ typedef struct mkv_track {
unsigned char *private_data;
unsigned int private_size;
bool parse;
bool parse, parse_timestamps;
void *parser_tmp;
AVCodecParserContext *av_parser;
AVCodecContext *av_parser_codec;
@ -1277,8 +1277,10 @@ static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track)
}
}
if (sh->format == MP_FOURCC('V', 'P', '9', '0'))
if (sh->format == MP_FOURCC('V', 'P', '9', '0')) {
track->parse = true;
track->parse_timestamps = true;
}
if (extradata_size > 0x1000000) {
MP_WARN(demuxer, "Invalid CodecPrivate\n");
@ -2298,12 +2300,16 @@ static void mkv_parse_and_add_packet(demuxer_t *demuxer, mkv_track_t *track,
return;
}
double tb = 1e9;
int64_t pts = dp->pts == MP_NOPTS_VALUE ? AV_NOPTS_VALUE : dp->pts * tb;
int64_t dts = dp->dts == MP_NOPTS_VALUE ? AV_NOPTS_VALUE : dp->dts * tb;
while (dp->len) {
uint8_t *data = NULL;
int size = 0;
int len = av_parser_parse2(track->av_parser, track->av_parser_codec,
&data, &size, dp->buffer, dp->len,
AV_NOPTS_VALUE, AV_NOPTS_VALUE, 0);
pts, dts, 0);
if (len < 0 || len > dp->len)
break;
dp->buffer += len;
@ -2313,8 +2319,15 @@ static void mkv_parse_and_add_packet(demuxer_t *demuxer, mkv_track_t *track,
if (!new)
break;
demux_packet_copy_attribs(new, dp);
if (track->parse_timestamps) {
new->pts = track->av_parser->pts == AV_NOPTS_VALUE
? MP_NOPTS_VALUE : track->av_parser->pts / tb;
new->dts = track->av_parser->dts == AV_NOPTS_VALUE
? MP_NOPTS_VALUE : track->av_parser->dts / tb;
}
demux_add_packet(stream, new);
}
pts = dts = AV_NOPTS_VALUE;
}
if (dp->len) {