diff options
Diffstat (limited to 'libavcodec/avcodec.h')
| -rw-r--r-- | libavcodec/avcodec.h | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index a5a651a635..f9ab7c2da9 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -1373,16 +1373,7 @@ typedef struct AVCodecContext { * encoded input. * * Audio: - * For encoding, this is the number of "priming" samples added by the - * encoder to the beginning of the stream. The decoded output will be - * delayed by this many samples relative to the input to the encoder (or - * more, if the decoder adds its own padding). - * The timestamps on the output packets are adjusted by the encoder so - * that they always refer to the first sample of the data actually - * contained in the packet, including any added padding. - * E.g. if the timebase is 1/samplerate and the timestamp of the first - * input sample is 0, the timestamp of the first output packet will be - * -delay. + * For encoding, this field is unused (see initial_padding). * * For decoding, this is the number of samples the decoder needs to * output before the decoder's output is valid. When seeking, you should @@ -2981,6 +2972,23 @@ typedef struct AVCodecContext { int side_data_only_packets; /** + * Audio only. The number of "priming" samples (padding) inserted by the + * encoder at the beginning of the audio. I.e. this number of leading + * decoded samples must be discarded by the caller to get the original audio + * without leading padding. + * + * - decoding: unused + * - encoding: Set by libavcodec. The timestamps on the output packets are + * adjusted by the encoder so that they always refer to the + * first sample of the data actually contained in the packet, + * including any added padding. E.g. if the timebase is + * 1/samplerate and the timestamp of the first input sample is + * 0, the timestamp of the first output packet will be + * -initial_padding. + */ + int initial_padding; + + /** * Timebase in which pkt_dts/pts and AVPacket.dts/pts are. * Code outside libavcodec should access this field using: * av_codec_{get,set}_pkt_timebase(avctx) |