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clarify avcodec_decode_audio3 and avcodec_decode_video2 doxygen 

Originally committed as revision 19128 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2009-06-06 20:16:53 +00:00
parent d4a9255699
commit ae8d21fb45
1 changed files with 10 additions and 12 deletions
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22
libavcodec/avcodec.h
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@ -3208,11 +3208,11 @@ attribute_deprecated int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *s
* @note You might have to align the input buffer avpkt->data and output buffer
* samples. The alignment requirements depend on the CPU: On some CPUs it isn't
* necessary at all, on others it won't work at all if not aligned and on others
* it will work but it will have an impact on performance. In practice, the
* bitstream should have 4 byte alignment at minimum and all sample data should
* be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
* the linesize is not a multiple of 16 then there's no sense in aligning the
* start of the buffer to 16.
* it will work but it will have an impact on performance.
*
* In practice, avpkt->data should have 4 byte alignment at minimum and
* samples should be 16 byte aligned unless the CPU doesn't need it
* (AltiVec and SSE do).
*
* @param avctx the codec context
* @param[out] samples the output buffer
@ -3259,14 +3259,12 @@ attribute_deprecated int avcodec_decode_video(AVCodecContext *avctx, AVFrame *pi
* @warning The end of the input buffer buf should be set to 0 to ensure that
* no overreading happens for damaged MPEG streams.
*
* @note You might have to align the input buffer avpkt->data and output buffer
* samples. The alignment requirements depend on the CPU: on some CPUs it isn't
* @note You might have to align the input buffer avpkt->data.
* The alignment requirements depend on the CPU: on some CPUs it isn't
* necessary at all, on others it won't work at all if not aligned and on others
* it will work but it will have an impact on performance. In practice, the
* bitstream should have 4 byte alignment at minimum and all sample data should
* be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
* the linesize is not a multiple of 16 then there's no sense in aligning the
* start of the buffer to 16.
* it will work but it will have an impact on performance.
*
* In practice, avpkt->data should have 4 byte alignment at minimum.
*
* @note Some codecs have a delay between input and output, these need to be
* feeded with avpkt->data=NULL, avpkt->size=0 at the end to return the remaining frames.