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lavf: add an API to get output timestamps.

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This commit is contained in:
Nicolas George 2011-06-30 19:45:22 +02:00
parent d1b029dec9
commit b442ca69d9
2 changed files with 30 additions and 0 deletions
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21
libavformat/avformat.h
View File

@ -316,6 +316,9 @@ typedef struct AVOutputFormat {
const AVClass *priv_class; ///< AVClass for the private context const AVClass *priv_class; ///< AVClass for the private context
void (*get_output_timestamp)(struct AVFormatContext *s, int stream,
int64_t *dts, int64_t *wall);
/* private fields */ /* private fields */
struct AVOutputFormat *next; struct AVOutputFormat *next;
} AVOutputFormat; } AVOutputFormat;
@ -1518,6 +1521,24 @@ int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
*/ */
int av_write_trailer(AVFormatContext *s); int av_write_trailer(AVFormatContext *s);
/**
* Get timing information for the data currently output.
* The exact meaning of "currently output" depends on the format.
* It is mostly relevant for devices that have an internal buffer and/or
* work in real time.
* @param s media file handle
* @param stream stream in the media file
* @param dts[out] DTS of the last packet output for the stream, in stream
* time_base units
* @param wall[out] absolute time when that packet whas output,
* in microsecond
* @return 0 if OK, AVERROR(ENOSYS) if the format does not support it
* Note: some formats or devices may not allow to measure dts and wall
* atomically.
*/
int av_get_output_timestamp(struct AVFormatContext *s, int stream,
int64_t *dts, int64_t *wall);
#if FF_API_DUMP_FORMAT #if FF_API_DUMP_FORMAT
/** /**
* @deprecated Deprecated in favor of av_dump_format(). * @deprecated Deprecated in favor of av_dump_format().

9
libavformat/utils.c
View File

@ -3285,6 +3285,15 @@ fail:
return ret; return ret;
} }
int av_get_output_timestamp(struct AVFormatContext *s, int stream,
int64_t *dts, int64_t *wall)
{
if (!s->oformat || !s->oformat->get_output_timestamp)
return AVERROR(ENOSYS);
s->oformat->get_output_timestamp(s, stream, dts, wall);
return 0;
}
void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx) void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
{ {
int i, j; int i, j;