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| author | Anton Khirnov <anton@khirnov.net> | 2014-06-18 09:39:32 +0200 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2014-06-20 14:14:11 +0200 |
| commit | 874390e163427c1fe7682ab27924a7843780dbb3 (patch) | |
| tree | f178ddee50533875a3f572a450b3bb714496919c | |
| parent | 440842c4eb1d7709654ec97cd687663d11ef499c (diff) | |
| download | ffmpeg-874390e163427c1fe7682ab27924a7843780dbb3.tar.gz | |
lavc: add a convenience function for rescaling timestamps in a packet
| -rw-r--r-- | doc/APIchanges | 3 | ||||
| -rw-r--r-- | libavcodec/avcodec.h | 13 | ||||
| -rw-r--r-- | libavcodec/avpacket.c | 13 | ||||
| -rw-r--r-- | libavcodec/version.h | 2 |
4 files changed, 30 insertions, 1 deletions
diff --git a/doc/APIchanges b/doc/APIchanges index 51a2ff559e..48fbe26b31 100644 --- a/doc/APIchanges +++ b/doc/APIchanges @@ -13,6 +13,9 @@ libavutil: 2013-12-xx API changes, most recent first: +2014-06-xx - xxxxxxx - lavc 55.55.0 - avcodec.h + Add av_packet_rescale_ts() to simplify timestamp conversion. + 2014-xx-xx - xxxxxxx - lavf 55.20.0 - avformat.h The proper way for providing a hint about the desired timebase to the muxers is now setting AVStream.time_base, instead of AVStream.codec.time_base as was diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 0396ea5614..cc74aeef04 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -3421,6 +3421,19 @@ void av_packet_move_ref(AVPacket *dst, AVPacket *src); int av_packet_copy_props(AVPacket *dst, const AVPacket *src); /** + * Convert valid timing fields (timestamps / durations) in a packet from one + * timebase to another. Timestamps with unknown values (AV_NOPTS_VALUE) will be + * ignored. + * + * @param pkt packet on which the conversion will be performed + * @param tb_src source timebase, in which the timing fields in pkt are + * expressed + * @param tb_dst destination timebase, to which the timing fields will be + * converted + */ +void av_packet_rescale_ts(AVPacket *pkt, AVRational tb_src, AVRational tb_dst); + +/** * @} */ diff --git a/libavcodec/avpacket.c b/libavcodec/avpacket.c index 052aaf8638..25eabdb215 100644 --- a/libavcodec/avpacket.c +++ b/libavcodec/avpacket.c @@ -24,6 +24,7 @@ #include "libavutil/avassert.h" #include "libavutil/common.h" #include "libavutil/internal.h" +#include "libavutil/mathematics.h" #include "libavutil/mem.h" #include "avcodec.h" #if FF_API_DESTRUCT_PACKET @@ -380,3 +381,15 @@ void av_packet_move_ref(AVPacket *dst, AVPacket *src) *dst = *src; av_init_packet(src); } + +void av_packet_rescale_ts(AVPacket *pkt, AVRational src_tb, AVRational dst_tb) +{ + if (pkt->pts != AV_NOPTS_VALUE) + pkt->pts = av_rescale_q(pkt->pts, src_tb, dst_tb); + if (pkt->dts != AV_NOPTS_VALUE) + pkt->dts = av_rescale_q(pkt->dts, src_tb, dst_tb); + if (pkt->duration > 0) + pkt->duration = av_rescale_q(pkt->duration, src_tb, dst_tb); + if (pkt->convergence_duration > 0) + pkt->convergence_duration = av_rescale_q(pkt->convergence_duration, src_tb, dst_tb); +} diff --git a/libavcodec/version.h b/libavcodec/version.h index c02540a7e2..dee6615d17 100644 --- a/libavcodec/version.h +++ b/libavcodec/version.h @@ -29,7 +29,7 @@ #include "libavutil/version.h" #define LIBAVCODEC_VERSION_MAJOR 55 -#define LIBAVCODEC_VERSION_MINOR 54 +#define LIBAVCODEC_VERSION_MINOR 55 #define LIBAVCODEC_VERSION_MICRO 0 #define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \ |