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Add convergence_duration to AVCodecParserContext.

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Patch by Ivan Schreter, schreter gmx net

Originally committed as revision 17468 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ivan Schreter 2009-02-19 23:35:59 +00:00 committed by Carl Eugen Hoyos
parent e9259f8d18
commit b1fa494205
4 changed files with 22 additions and 2 deletions
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19
libavcodec/avcodec.h
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@ -30,7 +30,7 @@
#include "libavutil/avutil.h"
#define LIBAVCODEC_VERSION_MAJOR 52
#define LIBAVCODEC_VERSION_MINOR 17
#define LIBAVCODEC_VERSION_MINOR 18
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
@ -3033,6 +3033,23 @@ typedef struct AVCodecParserContext {
* will be used.
*/
int key_frame;
/**
* Time difference in stream time base units from the pts of this
* packet to the point at which the output from the decoder has converged
* independent from the availability of previous frames. That is, the
* frames are virtually identical no matter if decoding started from
* the very first frame or from this keyframe.
* Is AV_NOPTS_VALUE if unknown.
* This field is not the display duration of the current frame.
*
* The purpose of this field is to allow seeking in streams that have no
* keyframes in the conventional sense. It corresponds to the
* recovery point SEI in H.264 and match_time_delta in NUT. It is also
* essential for some types of subtitle streams to ensure that all
* subtitles are correctly displayed after seeking.
*/
int64_t convergence_duration;
} AVCodecParserContext;
typedef struct AVCodecParser {

1
libavcodec/parser.c
View File

@ -74,6 +74,7 @@ AVCodecParserContext *av_parser_init(int codec_id)
s->fetch_timestamp=1;
s->pict_type = FF_I_TYPE;
s->key_frame = -1;
s->convergence_duration = AV_NOPTS_VALUE;
return s;
}

2
libavformat/avformat.h
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@ -23,7 +23,7 @@
#define LIBAVFORMAT_VERSION_MAJOR 52
#define LIBAVFORMAT_VERSION_MINOR 29
#define LIBAVFORMAT_VERSION_MICRO 1
#define LIBAVFORMAT_VERSION_MICRO 2
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \

2
libavformat/utils.c
View File

@ -909,6 +909,8 @@ static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
else if (pc->key_frame == -1 && pc->pict_type == FF_I_TYPE)
pkt->flags |= PKT_FLAG_KEY;
}
if (pc)
pkt->convergence_duration = pc->convergence_duration;
}
void av_destruct_packet_nofree(AVPacket *pkt)