diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2008-12-19 09:34:18 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2008-12-19 09:34:18 +0000 |
| commit | 6a1846eb4abcb7839e3ef2a52f8f73ff78b0aac0 (patch) | |
| tree | 5cb8479a5898afaa0f2202302c7b44e728fb8446 | |
| parent | a5805aa9d1d4bb9497bc4c12277d591ef776d440 (diff) | |
| download | ffmpeg-6a1846eb4abcb7839e3ef2a52f8f73ff78b0aac0.tar.gz | |
Document new idct requirements.
Originally committed as revision 16237 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | libavcodec/dsputil.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h index d4df99bafe..5beda8b423 100644 --- a/libavcodec/dsputil.h +++ b/libavcodec/dsputil.h @@ -442,6 +442,10 @@ typedef struct DSPContext { #define EDGE_WIDTH 16 /* h264 functions */ + /* NOTE!!! if you implement any of h264_idct8_add, h264_idct8_add4 then you must implement all of them + NOTE!!! if you implement any of h264_idct_add, h264_idct_add16, h264_idct_add16intra, h264_idct_add8 then you must implement all of them + The reason for above, is that no 2 out of one list may use a different permutation. + */ void (*h264_idct_add)(uint8_t *dst/*align 4*/, DCTELEM *block/*align 16*/, int stride); void (*h264_idct8_add)(uint8_t *dst/*align 8*/, DCTELEM *block/*align 16*/, int stride); void (*h264_idct_dc_add)(uint8_t *dst/*align 4*/, DCTELEM *block/*align 16*/, int stride); |