dsputil.c

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.7平台上编译为嵌入式图形界面操作系统。

        OP(dst[1*dstStride], (src1+src2)*20 - (src0+src3)*6 + (src0+src4)*3 - (src1+src5));\
        OP(dst[2*dstStride], (src2+src3)*20 - (src1+src4)*6 + (src0+src5)*3 - (src0+src6));\
        OP(dst[3*dstStride], (src3+src4)*20 - (src2+src5)*6 + (src1+src6)*3 - (src0+src7));\
        OP(dst[4*dstStride], (src4+src5)*20 - (src3+src6)*6 + (src2+src7)*3 - (src1+src8));\
        OP(dst[5*dstStride], (src5+src6)*20 - (src4+src7)*6 + (src3+src8)*3 - (src2+src8));\
        OP(dst[6*dstStride], (src6+src7)*20 - (src5+src8)*6 + (src4+src8)*3 - (src3+src7));\
        OP(dst[7*dstStride], (src7+src8)*20 - (src6+src8)*6 + (src5+src7)*3 - (src4+src6));\
        dst++;\
        src++;\
    }\
}\
\
static void OPNAME ## mpeg4_qpel16_h_lowpass(UINT8 *dst, UINT8 *src, int dstStride, int srcStride, int h){\
    UINT8 *cm = cropTbl + MAX_NEG_CROP;\
    int i;\
    for(i=0; i<h; i++)\
    {\
        OP(dst[ 0], (src[ 0]+src[ 1])*20 - (src[ 0]+src[ 2])*6 + (src[ 1]+src[ 3])*3 - (src[ 2]+src[ 4]));\
        OP(dst[ 1], (src[ 1]+src[ 2])*20 - (src[ 0]+src[ 3])*6 + (src[ 0]+src[ 4])*3 - (src[ 1]+src[ 5]));\
        OP(dst[ 2], (src[ 2]+src[ 3])*20 - (src[ 1]+src[ 4])*6 + (src[ 0]+src[ 5])*3 - (src[ 0]+src[ 6]));\
        OP(dst[ 3], (src[ 3]+src[ 4])*20 - (src[ 2]+src[ 5])*6 + (src[ 1]+src[ 6])*3 - (src[ 0]+src[ 7]));\
        OP(dst[ 4], (src[ 4]+src[ 5])*20 - (src[ 3]+src[ 6])*6 + (src[ 2]+src[ 7])*3 - (src[ 1]+src[ 8]));\
        OP(dst[ 5], (src[ 5]+src[ 6])*20 - (src[ 4]+src[ 7])*6 + (src[ 3]+src[ 8])*3 - (src[ 2]+src[ 9]));\
        OP(dst[ 6], (src[ 6]+src[ 7])*20 - (src[ 5]+src[ 8])*6 + (src[ 4]+src[ 9])*3 - (src[ 3]+src[10]));\
        OP(dst[ 7], (src[ 7]+src[ 8])*20 - (src[ 6]+src[ 9])*6 + (src[ 5]+src[10])*3 - (src[ 4]+src[11]));\
        OP(dst[ 8], (src[ 8]+src[ 9])*20 - (src[ 7]+src[10])*6 + (src[ 6]+src[11])*3 - (src[ 5]+src[12]));\
        OP(dst[ 9], (src[ 9]+src[10])*20 - (src[ 8]+src[11])*6 + (src[ 7]+src[12])*3 - (src[ 6]+src[13]));\
        OP(dst[10], (src[10]+src[11])*20 - (src[ 9]+src[12])*6 + (src[ 8]+src[13])*3 - (src[ 7]+src[14]));\
        OP(dst[11], (src[11]+src[12])*20 - (src[10]+src[13])*6 + (src[ 9]+src[14])*3 - (src[ 8]+src[15]));\
        OP(dst[12], (src[12]+src[13])*20 - (src[11]+src[14])*6 + (src[10]+src[15])*3 - (src[ 9]+src[16]));\
        OP(dst[13], (src[13]+src[14])*20 - (src[12]+src[15])*6 + (src[11]+src[16])*3 - (src[10]+src[16]));\
        OP(dst[14], (src[14]+src[15])*20 - (src[13]+src[16])*6 + (src[12]+src[16])*3 - (src[11]+src[15]));\
        OP(dst[15], (src[15]+src[16])*20 - (src[14]+src[16])*6 + (src[13]+src[15])*3 - (src[12]+src[14]));\
        dst+=dstStride;\
        src+=srcStride;\
    }\
}\
\
static void OPNAME ## mpeg4_qpel16_v_lowpass(UINT8 *dst, UINT8 *src, int dstStride, int srcStride, int w){\
    UINT8 *cm = cropTbl + MAX_NEG_CROP;\
    int i;\
    for(i=0; i<w; i++)\
    {\
        const int src0= src[0*srcStride];\
        const int src1= src[1*srcStride];\
        const int src2= src[2*srcStride];\
        const int src3= src[3*srcStride];\
        const int src4= src[4*srcStride];\
        const int src5= src[5*srcStride];\
        const int src6= src[6*srcStride];\
        const int src7= src[7*srcStride];\
        const int src8= src[8*srcStride];\
        const int src9= src[9*srcStride];\
        const int src10= src[10*srcStride];\
        const int src11= src[11*srcStride];\
        const int src12= src[12*srcStride];\
        const int src13= src[13*srcStride];\
        const int src14= src[14*srcStride];\
        const int src15= src[15*srcStride];\
        const int src16= src[16*srcStride];\
        OP(dst[ 0*dstStride], (src0 +src1 )*20 - (src0 +src2 )*6 + (src1 +src3 )*3 - (src2 +src4 ));\
        OP(dst[ 1*dstStride], (src1 +src2 )*20 - (src0 +src3 )*6 + (src0 +src4 )*3 - (src1 +src5 ));\
        OP(dst[ 2*dstStride], (src2 +src3 )*20 - (src1 +src4 )*6 + (src0 +src5 )*3 - (src0 +src6 ));\
        OP(dst[ 3*dstStride], (src3 +src4 )*20 - (src2 +src5 )*6 + (src1 +src6 )*3 - (src0 +src7 ));\
        OP(dst[ 4*dstStride], (src4 +src5 )*20 - (src3 +src6 )*6 + (src2 +src7 )*3 - (src1 +src8 ));\
        OP(dst[ 5*dstStride], (src5 +src6 )*20 - (src4 +src7 )*6 + (src3 +src8 )*3 - (src2 +src9 ));\
        OP(dst[ 6*dstStride], (src6 +src7 )*20 - (src5 +src8 )*6 + (src4 +src9 )*3 - (src3 +src10));\
        OP(dst[ 7*dstStride], (src7 +src8 )*20 - (src6 +src9 )*6 + (src5 +src10)*3 - (src4 +src11));\
        OP(dst[ 8*dstStride], (src8 +src9 )*20 - (src7 +src10)*6 + (src6 +src11)*3 - (src5 +src12));\
        OP(dst[ 9*dstStride], (src9 +src10)*20 - (src8 +src11)*6 + (src7 +src12)*3 - (src6 +src13));\
        OP(dst[10*dstStride], (src10+src11)*20 - (src9 +src12)*6 + (src8 +src13)*3 - (src7 +src14));\
        OP(dst[11*dstStride], (src11+src12)*20 - (src10+src13)*6 + (src9 +src14)*3 - (src8 +src15));\
        OP(dst[12*dstStride], (src12+src13)*20 - (src11+src14)*6 + (src10+src15)*3 - (src9 +src16));\
        OP(dst[13*dstStride], (src13+src14)*20 - (src12+src15)*6 + (src11+src16)*3 - (src10+src16));\
        OP(dst[14*dstStride], (src14+src15)*20 - (src13+src16)*6 + (src12+src16)*3 - (src11+src15));\
        OP(dst[15*dstStride], (src15+src16)*20 - (src14+src16)*6 + (src13+src15)*3 - (src12+src14));\
        dst++;\
        src++;\
    }\
}\
\
static void OPNAME ## qpel8_mc00_c (UINT8 *dst, UINT8 *src, int stride){\
    OPNAME ## pixels8_c(dst, src, stride, 8);\
}\
\
static void OPNAME ## qpel8_mc10_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 half[64];\
    put ## RND ## mpeg4_qpel8_h_lowpass(half, src, 8, stride, 8);\
    OPNAME ## pixels8_l2(dst, src, half, stride, stride, 8, 8);\
}\
\
static void OPNAME ## qpel8_mc20_c(UINT8 *dst, UINT8 *src, int stride){\
    OPNAME ## mpeg4_qpel8_h_lowpass(dst, src, stride, stride, 8);\
}\
\
static void OPNAME ## qpel8_mc30_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 half[64];\
    put ## RND ## mpeg4_qpel8_h_lowpass(half, src, 8, stride, 8);\
    OPNAME ## pixels8_l2(dst, src+1, half, stride, stride, 8, 8);\
}\
\
static void OPNAME ## qpel8_mc01_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[16*9];\
    UINT8 half[64];\
    copy_block9(full, src, 16, stride, 9);\
    put ## RND ## mpeg4_qpel8_v_lowpass(half, full, 8, 16, 8);\
    OPNAME ## pixels8_l2(dst, full, half, stride, 16, 8, 8);\
}\
\
static void OPNAME ## qpel8_mc02_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[16*9];\
    copy_block9(full, src, 16, stride, 9);\
    OPNAME ## mpeg4_qpel8_v_lowpass(dst, full, stride, 16, 8);\
}\
\
static void OPNAME ## qpel8_mc03_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[16*9];\
    UINT8 half[64];\
    copy_block9(full, src, 16, stride, 9);\
    put ## RND ## mpeg4_qpel8_v_lowpass(half, full, 8, 16, 8);\
    OPNAME ## pixels8_l2(dst, full+16, half, stride, 16, 8, 8);\
}\
static void OPNAME ## qpel8_mc11_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[16*9];\
    UINT8 halfH[72];\
    UINT8 halfV[64];\
    UINT8 halfHV[64];\
    copy_block9(full, src, 16, stride, 9);\
    put ## RND ## mpeg4_qpel8_h_lowpass(halfH, full, 8, 16, 9);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfV, full, 8, 16, 8);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfHV, halfH, 8, 8, 8);\
    OPNAME ## pixels8_l4(dst, full, halfH, halfV, halfHV, stride, 16, 8, 8, 8, 8);\
}\
static void OPNAME ## qpel8_mc31_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[16*9];\
    UINT8 halfH[72];\
    UINT8 halfV[64];\
    UINT8 halfHV[64];\
    copy_block9(full, src, 16, stride, 9);\
    put ## RND ## mpeg4_qpel8_h_lowpass(halfH, full, 8, 16, 9);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfV, full+1, 8, 16, 8);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfHV, halfH, 8, 8, 8);\
    OPNAME ## pixels8_l4(dst, full+1, halfH, halfV, halfHV, stride, 16, 8, 8, 8, 8);\
}\
static void OPNAME ## qpel8_mc13_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[16*9];\
    UINT8 halfH[72];\
    UINT8 halfV[64];\
    UINT8 halfHV[64];\
    copy_block9(full, src, 16, stride, 9);\
    put ## RND ## mpeg4_qpel8_h_lowpass(halfH, full, 8, 16, 9);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfV, full, 8, 16, 8);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfHV, halfH, 8, 8, 8);\
    OPNAME ## pixels8_l4(dst, full+16, halfH+8, halfV, halfHV, stride, 16, 8, 8, 8, 8);\
}\
static void OPNAME ## qpel8_mc33_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[16*9];\
    UINT8 halfH[72];\
    UINT8 halfV[64];\
    UINT8 halfHV[64];\
    copy_block9(full, src, 16, stride, 9);\
    put ## RND ## mpeg4_qpel8_h_lowpass(halfH, full  , 8, 16, 9);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfV, full+1, 8, 16, 8);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfHV, halfH, 8, 8, 8);\
    OPNAME ## pixels8_l4(dst, full+17, halfH+8, halfV, halfHV, stride, 16, 8, 8, 8, 8);\
}\
static void OPNAME ## qpel8_mc21_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 halfH[72];\
    UINT8 halfHV[64];\
    put ## RND ## mpeg4_qpel8_h_lowpass(halfH, src, 8, stride, 9);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfHV, halfH, 8, 8, 8);\
    OPNAME ## pixels8_l2(dst, halfH, halfHV, stride, 8, 8, 8);\
}\
static void OPNAME ## qpel8_mc23_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 halfH[72];\
    UINT8 halfHV[64];\
    put ## RND ## mpeg4_qpel8_h_lowpass(halfH, src, 8, stride, 9);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfHV, halfH, 8, 8, 8);\
    OPNAME ## pixels8_l2(dst, halfH+8, halfHV, stride, 8, 8, 8);\
}\
static void OPNAME ## qpel8_mc12_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[16*9];\
    UINT8 halfH[72];\
    UINT8 halfV[64];\
    UINT8 halfHV[64];\
    copy_block9(full, src, 16, stride, 9);\
    put ## RND ## mpeg4_qpel8_h_lowpass(halfH, full, 8, 16, 9);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfV, full, 8, 16, 8);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfHV, halfH, 8, 8, 8);\
    OPNAME ## pixels8_l2(dst, halfV, halfHV, stride, 8, 8, 8);\
}\
static void OPNAME ## qpel8_mc32_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[16*9];\
    UINT8 halfH[72];\
    UINT8 halfV[64];\
    UINT8 halfHV[64];\
    copy_block9(full, src, 16, stride, 9);\
    put ## RND ## mpeg4_qpel8_h_lowpass(halfH, full, 8, 16, 9);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfV, full+1, 8, 16, 8);\
    put ## RND ## mpeg4_qpel8_v_lowpass(halfHV, halfH, 8, 8, 8);\
    OPNAME ## pixels8_l2(dst, halfV, halfHV, stride, 8, 8, 8);\
}\
static void OPNAME ## qpel8_mc22_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 halfH[72];\
    put ## RND ## mpeg4_qpel8_h_lowpass(halfH, src, 8, stride, 9);\
    OPNAME ## mpeg4_qpel8_v_lowpass(dst, halfH, stride, 8, 8);\
}\
static void OPNAME ## qpel16_mc00_c (UINT8 *dst, UINT8 *src, int stride){\
    OPNAME ## pixels16_c(dst, src, stride, 16);\
}\
\
static void OPNAME ## qpel16_mc10_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 half[256];\
    put ## RND ## mpeg4_qpel16_h_lowpass(half, src, 16, stride, 16);\
    OPNAME ## pixels16_l2(dst, src, half, stride, stride, 16, 16);\
}\
\
static void OPNAME ## qpel16_mc20_c(UINT8 *dst, UINT8 *src, int stride){\
    OPNAME ## mpeg4_qpel16_h_lowpass(dst, src, stride, stride, 16);\
}\
\
static void OPNAME ## qpel16_mc30_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 half[256];\
    put ## RND ## mpeg4_qpel16_h_lowpass(half, src, 16, stride, 16);\
    OPNAME ## pixels16_l2(dst, src+1, half, stride, stride, 16, 16);\
}\
\
static void OPNAME ## qpel16_mc01_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[24*17];\
    UINT8 half[256];\
    copy_block17(full, src, 24, stride, 17);\
    put ## RND ## mpeg4_qpel16_v_lowpass(half, full, 16, 24, 16);\
    OPNAME ## pixels16_l2(dst, full, half, stride, 24, 16, 16);\
}\
\
static void OPNAME ## qpel16_mc02_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[24*17];\
    copy_block17(full, src, 24, stride, 17);\
    OPNAME ## mpeg4_qpel16_v_lowpass(dst, full, stride, 24, 16);\
}\
\
static void OPNAME ## qpel16_mc03_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[24*17];\
    UINT8 half[256];\
    copy_block17(full, src, 24, stride, 17);\
    put ## RND ## mpeg4_qpel16_v_lowpass(half, full, 16, 24, 16);\
    OPNAME ## pixels16_l2(dst, full+24, half, stride, 24, 16, 16);\
}\
static void OPNAME ## qpel16_mc11_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[24*17];\
    UINT8 halfH[272];\
    UINT8 halfV[256];\
    UINT8 halfHV[256];\
    copy_block17(full, src, 24, stride, 17);\
    put ## RND ## mpeg4_qpel16_h_lowpass(halfH, full, 16, 24, 17);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfV, full, 16, 24, 16);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfHV, halfH, 16, 16, 16);\
    OPNAME ## pixels16_l4(dst, full, halfH, halfV, halfHV, stride, 24, 16, 16, 16, 16);\
}\
static void OPNAME ## qpel16_mc31_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[24*17];\
    UINT8 halfH[272];\
    UINT8 halfV[256];\
    UINT8 halfHV[256];\
    copy_block17(full, src, 24, stride, 17);\
    put ## RND ## mpeg4_qpel16_h_lowpass(halfH, full, 16, 24, 17);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfV, full+1, 16, 24, 16);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfHV, halfH, 16, 16, 16);\
    OPNAME ## pixels16_l4(dst, full+1, halfH, halfV, halfHV, stride, 24, 16, 16, 16, 16);\
}\
static void OPNAME ## qpel16_mc13_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[24*17];\
    UINT8 halfH[272];\
    UINT8 halfV[256];\
    UINT8 halfHV[256];\
    copy_block17(full, src, 24, stride, 17);\
    put ## RND ## mpeg4_qpel16_h_lowpass(halfH, full, 16, 24, 17);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfV, full, 16, 24, 16);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfHV, halfH, 16, 16, 16);\
    OPNAME ## pixels16_l4(dst, full+24, halfH+16, halfV, halfHV, stride, 24, 16, 16, 16, 16);\
}\
static void OPNAME ## qpel16_mc33_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[24*17];\
    UINT8 halfH[272];\
    UINT8 halfV[256];\
    UINT8 halfHV[256];\
    copy_block17(full, src, 24, stride, 17);\
    put ## RND ## mpeg4_qpel16_h_lowpass(halfH, full  , 16, 24, 17);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfV, full+1, 16, 24, 16);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfHV, halfH, 16, 16, 16);\
    OPNAME ## pixels16_l4(dst, full+25, halfH+16, halfV, halfHV, stride, 24, 16, 16, 16, 16);\
}\
static void OPNAME ## qpel16_mc21_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 halfH[272];\
    UINT8 halfHV[256];\
    put ## RND ## mpeg4_qpel16_h_lowpass(halfH, src, 16, stride, 17);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfHV, halfH, 16, 16, 16);\
    OPNAME ## pixels16_l2(dst, halfH, halfHV, stride, 16, 16, 16);\
}\
static void OPNAME ## qpel16_mc23_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 halfH[272];\
    UINT8 halfHV[256];\
    put ## RND ## mpeg4_qpel16_h_lowpass(halfH, src, 16, stride, 17);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfHV, halfH, 16, 16, 16);\
    OPNAME ## pixels16_l2(dst, halfH+16, halfHV, stride, 16, 16, 16);\
}\
static void OPNAME ## qpel16_mc12_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[24*17];\
    UINT8 halfH[272];\
    UINT8 halfV[256];\
    UINT8 halfHV[256];\
    copy_block17(full, src, 24, stride, 17);\
    put ## RND ## mpeg4_qpel16_h_lowpass(halfH, full, 16, 24, 17);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfV, full, 16, 24, 16);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfHV, halfH, 16, 16, 16);\
    OPNAME ## pixels16_l2(dst, halfV, halfHV, stride, 16, 16, 16);\
}\
static void OPNAME ## qpel16_mc32_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 full[24*17];\
    UINT8 halfH[272];\
    UINT8 halfV[256];\
    UINT8 halfHV[256];\
    copy_block17(full, src, 24, stride, 17);\
    put ## RND ## mpeg4_qpel16_h_lowpass(halfH, full, 16, 24, 17);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfV, full+1, 16, 24, 16);\
    put ## RND ## mpeg4_qpel16_v_lowpass(halfHV, halfH, 16, 16, 16);\
    OPNAME ## pixels16_l2(dst, halfV, halfHV, stride, 16, 16, 16);\
}\
static void OPNAME ## qpel16_mc22_c(UINT8 *dst, UINT8 *src, int stride){\
    UINT8 halfH[272];\
    put ## RND ## mpeg4_qpel16_h_lowpass(halfH, src, 16, stride, 17);\
    OPNAME ## mpeg4_qpel16_v_lowpass(dst, halfH, stride, 16, 16);\
}

#define op_avg(a, b) a = (((a)+cm[((b) + 16)>>5]+1)>>1)
#define op_avg_no_rnd(a, b) a = (((a)+cm[((b) + 15)>>5])>>1)
#define op_put(a, b) a = cm[((b) + 16)>>5]
#define op_put_no_rnd(a, b) a = cm[((b) + 15)>>5]

QPEL_MC(0, put_       , _       , op_put)
QPEL_MC(1, put_no_rnd_, _no_rnd_, op_put_no_rnd)
QPEL_MC(0, avg_       , _       , op_avg)
//QPEL_MC(1, avg_no_rnd , _       , op_avg)
#undef op_avg
#undef op_avg_no_rnd
#undef op_put
#undef op_put_no_rnd

static int pix_abs16x16_c(UINT8 *pix1, UINT8 *pix2, int line_size)
{
    int s, i;

    s = 0;
    for(i=0;i<16;i++) {
        s += abs(pix1[0] - pix2[0]);
        s += abs(pix1[1] - pix2[1]);
        s += abs(pix1[2] - pix2[2]);
        s += abs(pix1[3] - pix2[3]);
        s += abs(pix1[4] - pix2[4]);
        s += abs(pix1[5] - pix2[5]);
        s += abs(pix1[6] - pix2[6]);
        s += abs(pix1[7] - pix2[7]);
        s += abs(pix1[8] - pix2[8]);
        s += abs(pix1[9] - pix2[9]);
        s += abs(pix1[10] - pix2[10]);
        s += abs(pix1[11] - pix2[11]);
        s += abs(pix1[12] - pix2[12]);
        s += abs(pix1[13] - pix2[13]);
        s += abs(pix1[14] - pix2[14]);
        s += abs(pix1[15] - pix2[15]);
        pix1 += line_size;
        pix2 += line_size;
    }
    return s;
}

static int pix_abs16x16_x2_c(UINT8 *pix1, UINT8 *pix2, int line_size)
{
    int s, i;

    s = 0;
    for(i=0;i<16;i++) {
        s += abs(pix1[0] - avg2(pix2[0], pix2[1]));
        s += abs(pix1[1] - avg2(pix2[1], pix2[2]));
        s += abs(pix1[2] - avg2(pix2[2], pix2[3]));