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authorDavid Conrad <lessen42@gmail.com>2009-04-14 23:56:10 +0000
committerDavid Conrad <lessen42@gmail.com>2009-04-14 23:56:10 +0000
commit8013da736467d0111e96801dbb1acdccc0bb0b10 (patch)
tree5ae63d716eddffa53b3c59f3e8665025f1049949 /libavcodec/dsputil.c
parentc374691b28638763045ae55fc45c39da9bb5b6eb (diff)
downloadffmpeg-8013da736467d0111e96801dbb1acdccc0bb0b10.tar.gz
VC1: add and use avg_no_rnd chroma MC functions
Originally committed as revision 18518 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/dsputil.c')
-rw-r--r--libavcodec/dsputil.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c
index 695b6e35cd..df38b2d8ce 100644
--- a/libavcodec/dsputil.c
+++ b/libavcodec/dsputil.c
@@ -1703,6 +1703,30 @@ static void put_no_rnd_vc1_chroma_mc8_c(uint8_t *dst/*align 8*/, uint8_t *src/*a
}
}
+static void avg_no_rnd_vc1_chroma_mc8_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], ((A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1] + 32 - 4) >> 6));
+ dst[1] = avg2(dst[1], ((A*src[1] + B*src[2] + C*src[stride+1] + D*src[stride+2] + 32 - 4) >> 6));
+ dst[2] = avg2(dst[2], ((A*src[2] + B*src[3] + C*src[stride+2] + D*src[stride+3] + 32 - 4) >> 6));
+ dst[3] = avg2(dst[3], ((A*src[3] + B*src[4] + C*src[stride+3] + D*src[stride+4] + 32 - 4) >> 6));
+ dst[4] = avg2(dst[4], ((A*src[4] + B*src[5] + C*src[stride+4] + D*src[stride+5] + 32 - 4) >> 6));
+ dst[5] = avg2(dst[5], ((A*src[5] + B*src[6] + C*src[stride+5] + D*src[stride+6] + 32 - 4) >> 6));
+ dst[6] = avg2(dst[6], ((A*src[6] + B*src[7] + C*src[stride+6] + D*src[stride+7] + 32 - 4) >> 6));
+ dst[7] = avg2(dst[7], ((A*src[7] + B*src[8] + C*src[stride+7] + D*src[stride+8] + 32 - 4) >> 6));
+ dst+= stride;
+ src+= stride;
+ }
+}
+
#define QPEL_MC(r, OPNAME, RND, OP) \
static void OPNAME ## mpeg4_qpel8_h_lowpass(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h){\
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;\
@@ -4490,6 +4514,7 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
c->avg_h264_chroma_pixels_tab[1]= avg_h264_chroma_mc4_c;
c->avg_h264_chroma_pixels_tab[2]= avg_h264_chroma_mc2_c;
c->put_no_rnd_vc1_chroma_pixels_tab[0]= put_no_rnd_vc1_chroma_mc8_c;
+ c->avg_no_rnd_vc1_chroma_pixels_tab[0]= avg_no_rnd_vc1_chroma_mc8_c;
c->weight_h264_pixels_tab[0]= weight_h264_pixels16x16_c;
c->weight_h264_pixels_tab[1]= weight_h264_pixels16x8_c;