diff options
| author | wm4 <nfxjfg@googlemail.com> | 2015-09-11 18:36:56 +0200 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2015-09-12 12:27:19 +0200 |
| commit | 87a051f97633010f71dfc1d23d806856499bf231 (patch) | |
| tree | 6398a5fa15f96cb3b5130ae1f1da2fb7ddc544b1 /libavcodec/internal.h | |
| parent | b7ab6e18eecad43593ad2a0e9fc9eba7f24751cb (diff) | |
lavc: allow asynchronous decoders to return correct pkt_dts values
The generic code in utils.c sets the AVFrame.pkt_dts field from the
packet it was supposedly decoded. This does not have to be true for a
fully asynchronous decoder like mmaldec. It could be overwritten with an
incorrect value. Even if the decoder doesn't determine the DTS (but sets
it to AV_NOPTS_VALUE), it's impossible to determine a correct value in
utils.c.
Decoders can now be marked with FF_CODEC_CAP_SETS_PKT_DTS, in which case
utils.c won't overwrite the field. The decoders are expected to set this
field (even if they only set it to AV_NOPTS_VALUE).
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Diffstat (limited to 'libavcodec/internal.h')
| -rw-r--r-- | libavcodec/internal.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/libavcodec/internal.h b/libavcodec/internal.h index fc906322f8..500511dada 100644 --- a/libavcodec/internal.h +++ b/libavcodec/internal.h @@ -46,7 +46,13 @@ * all. */ #define FF_CODEC_CAP_INIT_CLEANUP (1 << 1) - +/** + * Decoders marked with FF_CODEC_CAP_SETS_PKT_DTS want to set + * AVFrame.pkt_dts manually. If the flag is set, utils.c won't overwrite + * this field. If it's unset, utils.c tries to guess the pkt_dts field + * from the input AVPacket. + */ +#define FF_CODEC_CAP_SETS_PKT_DTS (1 << 2) #ifdef DEBUG # define ff_dlog(ctx, ...) av_log(ctx, AV_LOG_DEBUG, __VA_ARGS__) |