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vp8dsp: Clarify the first dimension of the mc function tables

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Index 0 is w=16, 1 is wd=8, 2 is wd=4.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2016-06-23 14:31:14 +03:00
parent 924e2ecd2b
commit dc08bbf63a
1 changed files with 2 additions and 2 deletions
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4
libavcodec/vp8dsp.h
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@ -70,12 +70,12 @@ typedef struct VP8DSPContext {
void (*vp8_h_loop_filter_simple)(uint8_t *dst, ptrdiff_t stride, int flim);
/**
* first dimension: width>>3, height is assumed equal to width
* first dimension: 4-log2(width), height is assumed equal to width
* second dimension: 0 if no vertical interpolation is needed;
* 1 4-tap vertical interpolation filter (my & 1)
* 2 6-tap vertical interpolation filter (!(my & 1))
* third dimension: same as second dimension, for horizontal interpolation
* so something like put_vp8_epel_pixels_tab[width>>3][2*!!my-(my&1)][2*!!mx-(mx&1)](..., mx, my)
* so something like put_vp8_epel_pixels_tab[4-log2(width)][2*!!my-(my&1)][2*!!mx-(mx&1)](..., mx, my)
*/
vp8_mc_func put_vp8_epel_pixels_tab[3][3][3];
vp8_mc_func put_vp8_bilinear_pixels_tab[3][3][3];