diff options
| -rw-r--r-- | libavcodec/vc1dsp.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/libavcodec/vc1dsp.c b/libavcodec/vc1dsp.c index fff8d8fe62..b2902d5886 100644 --- a/libavcodec/vc1dsp.c +++ b/libavcodec/vc1dsp.c @@ -758,6 +758,28 @@ static void avg_no_rnd_vc1_chroma_mc8_c(uint8_t *dst /* align 8 */, } } +static void avg_no_rnd_vc1_chroma_mc4_c(uint8_t *dst /* align 8 */, + uint8_t *src /* align 1 */, + int stride, int h, int x, int y) +{ + const int A = (8 - x) * (8 - y); + const int B = ( x) * (8 - y); + const int C = (8 - x) * ( y); + const int D = ( x) * ( y); + int i; + + assert(x < 8 && y < 8 && x >= 0 && y >= 0); + + for (i = 0; i < h; i++) { + dst[0] = avg2(dst[0], chroma_mc(0)); + dst[1] = avg2(dst[1], chroma_mc(1)); + dst[2] = avg2(dst[2], chroma_mc(2)); + dst[3] = avg2(dst[3], chroma_mc(3)); + dst += stride; + src += stride; + } +} + #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER static void sprite_h_c(uint8_t *dst, const uint8_t *src, int offset, @@ -902,6 +924,7 @@ av_cold void ff_vc1dsp_init(VC1DSPContext *dsp) dsp->put_no_rnd_vc1_chroma_pixels_tab[0] = put_no_rnd_vc1_chroma_mc8_c; dsp->avg_no_rnd_vc1_chroma_pixels_tab[0] = avg_no_rnd_vc1_chroma_mc8_c; dsp->put_no_rnd_vc1_chroma_pixels_tab[1] = put_no_rnd_vc1_chroma_mc4_c; + dsp->avg_no_rnd_vc1_chroma_pixels_tab[1] = avg_no_rnd_vc1_chroma_mc4_c; #if CONFIG_WMV3IMAGE_DECODER || CONFIG_VC1IMAGE_DECODER dsp->sprite_h = sprite_h_c; |