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Document CODEC_FLAG_EMU_EDGE and avcodec_align_dimensions interaction.

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backport r23258 by reimar


Originally committed as revision 23321 to svn://svn.ffmpeg.org/ffmpeg/branches/0.6
This commit is contained in:
Reinhard Tartler 2010-05-25 18:34:19 +00:00
parent 5f1a8c5e80
commit cdfe333493
1 changed files with 8 additions and 0 deletions
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8
libavcodec/avcodec.h
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@ -3303,12 +3303,20 @@ unsigned avcodec_get_edge_width(void);
* Modifies width and height values so that they will result in a memory * Modifies width and height values so that they will result in a memory
* buffer that is acceptable for the codec if you do not use any horizontal * buffer that is acceptable for the codec if you do not use any horizontal
* padding. * padding.
*
* May only be used if a codec with CODEC_CAP_DR1 has been opened.
* If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased
* according to avcodec_get_edge_width() before.
*/ */
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height); void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
/** /**
* Modifies width and height values so that they will result in a memory * Modifies width and height values so that they will result in a memory
* buffer that is acceptable for the codec if you also ensure that all * buffer that is acceptable for the codec if you also ensure that all
* line sizes are a multiple of the respective linesize_align[i]. * line sizes are a multiple of the respective linesize_align[i].
*
* May only be used if a codec with CODEC_CAP_DR1 has been opened.
* If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased
* according to avcodec_get_edge_width() before.
*/ */
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
int linesize_align[4]); int linesize_align[4]);