| /* |
| * Copyright (c) 2011 The LibYuv project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "row.h" |
| |
| extern "C" { |
| |
| #ifdef HAS_ARGBTOYROW_SSSE3 |
| #define TALIGN16(t, var) static __declspec(align(16)) t _ ## var |
| |
| // Constant multiplication table for converting ARGB to I400. |
| extern "C" TALIGN16(const int8, kARGBToY[16]) = { |
| 13, 65, 33, 0, 13, 65, 33, 0, 13, 65, 33, 0, 13, 65, 33, 0 |
| }; |
| |
| extern "C" TALIGN16(const int8, kARGBToU[16]) = { |
| 112, -74, -38, 0, 112, -74, -38, 0, 112, -74, -38, 0, 112, -74, -38, 0 |
| }; |
| |
| extern "C" TALIGN16(const int8, kARGBToV[16]) = { |
| -18, -94, 112, 0, -18, -94, 112, 0, -18, -94, 112, 0, -18, -94, 112, 0, |
| }; |
| |
| // Constants for BGRA |
| extern "C" TALIGN16(const int8, kBGRAToY[16]) = { |
| 0, 33, 65, 13, 0, 33, 65, 13, 0, 33, 65, 13, 0, 33, 65, 13 |
| }; |
| |
| extern "C" TALIGN16(const int8, kBGRAToU[16]) = { |
| 0, -38, -74, 112, 0, -38, -74, 112, 0, -38, -74, 112, 0, -38, -74, 112 |
| }; |
| |
| extern "C" TALIGN16(const int8, kBGRAToV[16]) = { |
| 0, 112, -94, -18, 0, 112, -94, -18, 0, 112, -94, -18, 0, 112, -94, -18 |
| }; |
| |
| // Constants for ABGR |
| extern "C" TALIGN16(const int8, kABGRToY[16]) = { |
| 33, 65, 13, 0, 33, 65, 13, 0, 33, 65, 13, 0, 33, 65, 13, 0 |
| }; |
| |
| extern "C" TALIGN16(const int8, kABGRToU[16]) = { |
| -38, -74, 112, 0, -38, -74, 112, 0, -38, -74, 112, 0, -38, -74, 112, 0 |
| }; |
| |
| extern "C" TALIGN16(const int8, kABGRToV[16]) = { |
| 112, -94, -18, 0, 112, -94, -18, 0, 112, -94, -18, 0, 112, -94, -18, 0 |
| }; |
| |
| extern "C" TALIGN16(const uint8, kAddY16[16]) = { |
| 16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u, |
| 16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u, |
| }; |
| |
| extern "C" TALIGN16(const uint8, kAddUV128[16]) = { |
| 128u, 128u, 128u, 128u, 128u, 128u, 128u, 128u, |
| 128u, 128u, 128u, 128u, 128u, 128u, 128u, 128u |
| }; |
| |
| // Shuffle table for converting BG24 to ARGB. |
| extern "C" TALIGN16(const uint8, kShuffleMaskBG24ToARGB[16]) = { |
| 0u, 1u, 2u, 12u, 3u, 4u, 5u, 13u, 6u, 7u, 8u, 14u, 9u, 10u, 11u, 15u |
| }; |
| |
| // Shuffle table for converting RAW to ARGB. |
| extern "C" TALIGN16(const uint8, kShuffleMaskRAWToARGB[16]) = { |
| 2u, 1u, 0u, 12u, 5u, 4u, 3u, 13u, 8u, 7u, 6u, 14u, 11u, 10u, 9u, 15u |
| }; |
| |
| // Convert 16 ARGB pixels (64 bytes) to 16 Y values |
| __declspec(naked) |
| void ARGBToYRow_SSSE3(const uint8* src_argb, uint8* dst_y, int pix) { |
| __asm { |
| mov eax, [esp + 4] /* src_argb */ |
| mov edx, [esp + 8] /* dst_y */ |
| mov ecx, [esp + 12] /* pix */ |
| movdqa xmm7, _kARGBToY |
| movdqa xmm6, _kAddY16 |
| |
| convertloop : |
| movdqa xmm0, [eax] |
| movdqa xmm1, [eax + 16] |
| movdqa xmm2, [eax + 32] |
| movdqa xmm3, [eax + 48] |
| pmaddubsw xmm0, xmm7 |
| pmaddubsw xmm1, xmm7 |
| pmaddubsw xmm2, xmm7 |
| pmaddubsw xmm3, xmm7 |
| lea eax, [eax + 64] |
| phaddw xmm0, xmm1 |
| phaddw xmm2, xmm3 |
| psrlw xmm0, 7 |
| psrlw xmm2, 7 |
| packuswb xmm0, xmm2 |
| paddb xmm0, xmm6 |
| movdqa [edx], xmm0 |
| lea edx, [edx + 16] |
| sub ecx, 16 |
| ja convertloop |
| ret |
| } |
| } |
| |
| __declspec(naked) |
| void BGRAToYRow_SSSE3(const uint8* src_argb, uint8* dst_y, int pix) { |
| __asm { |
| mov eax, [esp + 4] /* src_argb */ |
| mov edx, [esp + 8] /* dst_y */ |
| mov ecx, [esp + 12] /* pix */ |
| movdqa xmm7, _kBGRAToY |
| movdqa xmm6, _kAddY16 |
| |
| convertloop : |
| movdqa xmm0, [eax] |
| movdqa xmm1, [eax + 16] |
| movdqa xmm2, [eax + 32] |
| movdqa xmm3, [eax + 48] |
| pmaddubsw xmm0, xmm7 |
| pmaddubsw xmm1, xmm7 |
| pmaddubsw xmm2, xmm7 |
| pmaddubsw xmm3, xmm7 |
| lea eax, [eax + 64] |
| phaddw xmm0, xmm1 |
| phaddw xmm2, xmm3 |
| psrlw xmm0, 7 |
| psrlw xmm2, 7 |
| packuswb xmm0, xmm2 |
| paddb xmm0, xmm6 |
| movdqa [edx], xmm0 |
| lea edx, [edx + 16] |
| sub ecx, 16 |
| ja convertloop |
| ret |
| } |
| } |
| |
| __declspec(naked) |
| void ABGRToYRow_SSSE3(const uint8* src_argb, uint8* dst_y, int pix) { |
| __asm { |
| mov eax, [esp + 4] /* src_argb */ |
| mov edx, [esp + 8] /* dst_y */ |
| mov ecx, [esp + 12] /* pix */ |
| movdqa xmm7, _kABGRToY |
| movdqa xmm6, _kAddY16 |
| |
| convertloop : |
| movdqa xmm0, [eax] |
| movdqa xmm1, [eax + 16] |
| movdqa xmm2, [eax + 32] |
| movdqa xmm3, [eax + 48] |
| pmaddubsw xmm0, xmm7 |
| pmaddubsw xmm1, xmm7 |
| pmaddubsw xmm2, xmm7 |
| pmaddubsw xmm3, xmm7 |
| lea eax, [eax + 64] |
| phaddw xmm0, xmm1 |
| phaddw xmm2, xmm3 |
| psrlw xmm0, 7 |
| psrlw xmm2, 7 |
| packuswb xmm0, xmm2 |
| paddb xmm0, xmm6 |
| movdqa [edx], xmm0 |
| lea edx, [edx + 16] |
| sub ecx, 16 |
| ja convertloop |
| ret |
| } |
| } |
| |
| __declspec(naked) |
| void ARGBToUVRow_SSSE3(const uint8* src_argb0, int src_stride_argb, |
| uint8* dst_u, uint8* dst_v, int width) { |
| __asm { |
| push esi |
| push edi |
| mov eax, [esp + 8 + 4] // src_argb |
| mov esi, [esp + 8 + 8] // src_stride_argb |
| mov edx, [esp + 8 + 12] // dst_u |
| mov edi, [esp + 8 + 16] // dst_v |
| mov ecx, [esp + 8 + 20] // pix |
| movdqa xmm7, _kARGBToU |
| movdqa xmm6, _kARGBToV |
| movdqa xmm5, _kAddUV128 |
| sub edi, edx // stride from u to v |
| |
| convertloop : |
| /* step 1 - subsample 16x2 argb pixels to 8x1 */ |
| movdqa xmm0, [eax] |
| movdqa xmm1, [eax + 16] |
| movdqa xmm2, [eax + 32] |
| movdqa xmm3, [eax + 48] |
| pavgb xmm0, [eax + esi] |
| pavgb xmm1, [eax + esi + 16] |
| pavgb xmm2, [eax + esi + 32] |
| pavgb xmm3, [eax + esi + 48] |
| lea eax, [eax + 64] |
| movdqa xmm4, xmm0 |
| shufps xmm0, xmm1, 0x88 |
| shufps xmm4, xmm1, 0xdd |
| pavgb xmm0, xmm4 |
| movdqa xmm4, xmm2 |
| shufps xmm2, xmm3, 0x88 |
| shufps xmm4, xmm3, 0xdd |
| pavgb xmm2, xmm4 |
| |
| // step 2 - convert to U and V |
| // from here down is very similar to Y code except |
| // instead of 16 different pixels, its 8 pixels of U and 8 of V |
| movdqa xmm1, xmm0 |
| movdqa xmm3, xmm2 |
| pmaddubsw xmm0, xmm7 // U |
| pmaddubsw xmm2, xmm7 |
| pmaddubsw xmm1, xmm6 // V |
| pmaddubsw xmm3, xmm6 |
| phaddw xmm0, xmm2 |
| phaddw xmm1, xmm3 |
| psraw xmm0, 8 |
| psraw xmm1, 8 |
| packsswb xmm0, xmm1 |
| paddb xmm0, xmm5 // -> unsigned |
| |
| // step 3 - store 8 U and 8 V values |
| movlps qword ptr [edx], xmm0 // U |
| movhps qword ptr [edx + edi], xmm0 // V |
| lea edx, [edx + 8] |
| sub ecx, 16 |
| ja convertloop |
| pop edi |
| pop esi |
| ret |
| } |
| } |
| |
| __declspec(naked) |
| void BGRAToUVRow_SSSE3(const uint8* src_argb0, int src_stride_argb, |
| uint8* dst_u, uint8* dst_v, int width) { |
| __asm { |
| push esi |
| push edi |
| mov eax, [esp + 8 + 4] // src_argb |
| mov esi, [esp + 8 + 8] // src_stride_argb |
| mov edx, [esp + 8 + 12] // dst_u |
| mov edi, [esp + 8 + 16] // dst_v |
| mov ecx, [esp + 8 + 20] // pix |
| movdqa xmm7, _kBGRAToU |
| movdqa xmm6, _kBGRAToV |
| movdqa xmm5, _kAddUV128 |
| sub edi, edx // stride from u to v |
| |
| convertloop : |
| /* step 1 - subsample 16x2 argb pixels to 8x1 */ |
| movdqa xmm0, [eax] |
| movdqa xmm1, [eax + 16] |
| movdqa xmm2, [eax + 32] |
| movdqa xmm3, [eax + 48] |
| pavgb xmm0, [eax + esi] |
| pavgb xmm1, [eax + esi + 16] |
| pavgb xmm2, [eax + esi + 32] |
| pavgb xmm3, [eax + esi + 48] |
| lea eax, [eax + 64] |
| movdqa xmm4, xmm0 |
| shufps xmm0, xmm1, 0x88 |
| shufps xmm4, xmm1, 0xdd |
| pavgb xmm0, xmm4 |
| movdqa xmm4, xmm2 |
| shufps xmm2, xmm3, 0x88 |
| shufps xmm4, xmm3, 0xdd |
| pavgb xmm2, xmm4 |
| |
| // step 2 - convert to U and V |
| // from here down is very similar to Y code except |
| // instead of 16 different pixels, its 8 pixels of U and 8 of V |
| movdqa xmm1, xmm0 |
| movdqa xmm3, xmm2 |
| pmaddubsw xmm0, xmm7 // U |
| pmaddubsw xmm2, xmm7 |
| pmaddubsw xmm1, xmm6 // V |
| pmaddubsw xmm3, xmm6 |
| phaddw xmm0, xmm2 |
| phaddw xmm1, xmm3 |
| psraw xmm0, 8 |
| psraw xmm1, 8 |
| packsswb xmm0, xmm1 |
| paddb xmm0, xmm5 // -> unsigned |
| |
| // step 3 - store 8 U and 8 V values |
| movlps qword ptr [edx], xmm0 // U |
| movhps qword ptr [edx + edi], xmm0 // V |
| lea edx, [edx + 8] |
| sub ecx, 16 |
| ja convertloop |
| pop edi |
| pop esi |
| ret |
| } |
| } |
| |
| __declspec(naked) |
| void ABGRToUVRow_SSSE3(const uint8* src_argb0, int src_stride_argb, |
| uint8* dst_u, uint8* dst_v, int width) { |
| __asm { |
| push esi |
| push edi |
| mov eax, [esp + 8 + 4] // src_argb |
| mov esi, [esp + 8 + 8] // src_stride_argb |
| mov edx, [esp + 8 + 12] // dst_u |
| mov edi, [esp + 8 + 16] // dst_v |
| mov ecx, [esp + 8 + 20] // pix |
| movdqa xmm7, _kABGRToU |
| movdqa xmm6, _kABGRToV |
| movdqa xmm5, _kAddUV128 |
| sub edi, edx // stride from u to v |
| |
| convertloop : |
| /* step 1 - subsample 16x2 argb pixels to 8x1 */ |
| movdqa xmm0, [eax] |
| movdqa xmm1, [eax + 16] |
| movdqa xmm2, [eax + 32] |
| movdqa xmm3, [eax + 48] |
| pavgb xmm0, [eax + esi] |
| pavgb xmm1, [eax + esi + 16] |
| pavgb xmm2, [eax + esi + 32] |
| pavgb xmm3, [eax + esi + 48] |
| lea eax, [eax + 64] |
| movdqa xmm4, xmm0 |
| shufps xmm0, xmm1, 0x88 |
| shufps xmm4, xmm1, 0xdd |
| pavgb xmm0, xmm4 |
| movdqa xmm4, xmm2 |
| shufps xmm2, xmm3, 0x88 |
| shufps xmm4, xmm3, 0xdd |
| pavgb xmm2, xmm4 |
| |
| // step 2 - convert to U and V |
| // from here down is very similar to Y code except |
| // instead of 16 different pixels, its 8 pixels of U and 8 of V |
| movdqa xmm1, xmm0 |
| movdqa xmm3, xmm2 |
| pmaddubsw xmm0, xmm7 // U |
| pmaddubsw xmm2, xmm7 |
| pmaddubsw xmm1, xmm6 // V |
| pmaddubsw xmm3, xmm6 |
| phaddw xmm0, xmm2 |
| phaddw xmm1, xmm3 |
| psraw xmm0, 8 |
| psraw xmm1, 8 |
| packsswb xmm0, xmm1 |
| paddb xmm0, xmm5 // -> unsigned |
| |
| // step 3 - store 8 U and 8 V values |
| movlps qword ptr [edx], xmm0 // U |
| movhps qword ptr [edx + edi], xmm0 // V |
| lea edx, [edx + 8] |
| sub ecx, 16 |
| ja convertloop |
| pop edi |
| pop esi |
| ret |
| } |
| } |
| |
| __declspec(naked) |
| void BG24ToARGBRow_SSSE3(const uint8* src_bg24, uint8* dst_argb, int pix) { |
| __asm { |
| mov eax, [esp + 4] // src_bg24 |
| mov edx, [esp + 8] // dst_argb |
| mov ecx, [esp + 12] // pix |
| pcmpeqb xmm7, xmm7 // generate mask 0xff000000 |
| pslld xmm7, 24 |
| movdqa xmm6, _kShuffleMaskBG24ToARGB |
| |
| convertloop : |
| movdqa xmm0, [eax] |
| movdqa xmm1, [eax + 16] |
| movdqa xmm3, [eax + 32] |
| lea eax, [eax + 48] |
| movdqa xmm2, xmm3 |
| palignr xmm2, xmm1, 8 // xmm2 = { xmm3[0:3] xmm1[8:15]} |
| pshufb xmm2, xmm6 |
| por xmm2, xmm7 |
| palignr xmm1, xmm0, 12 // xmm1 = { xmm3[0:7] xmm0[12:15]} |
| pshufb xmm0, xmm6 |
| movdqa [edx + 32], xmm2 |
| por xmm0, xmm7 |
| pshufb xmm1, xmm6 |
| movdqa [edx], xmm0 |
| por xmm1, xmm7 |
| palignr xmm3, xmm3, 4 // xmm3 = { xmm3[4:15]} |
| pshufb xmm3, xmm6 |
| movdqa [edx + 16], xmm1 |
| por xmm3, xmm7 |
| movdqa [edx + 48], xmm3 |
| lea edx, [edx + 64] |
| sub ecx, 16 |
| ja convertloop |
| ret |
| } |
| } |
| |
| __declspec(naked) |
| void RAWToARGBRow_SSSE3(const uint8* src_raw, uint8* dst_argb, |
| int pix) { |
| __asm { |
| mov eax, [esp + 4] // src_raw |
| mov edx, [esp + 8] // dst_argb |
| mov ecx, [esp + 12] // pix |
| pcmpeqb xmm7, xmm7 // generate mask 0xff000000 |
| pslld xmm7, 24 |
| movdqa xmm6, _kShuffleMaskRAWToARGB |
| |
| convertloop : |
| movdqa xmm0, [eax] |
| movdqa xmm1, [eax + 16] |
| movdqa xmm3, [eax + 32] |
| lea eax, [eax + 48] |
| movdqa xmm2, xmm3 |
| palignr xmm2, xmm1, 8 // xmm2 = { xmm3[0:3] xmm1[8:15]} |
| pshufb xmm2, xmm6 |
| por xmm2, xmm7 |
| palignr xmm1, xmm0, 12 // xmm1 = { xmm3[0:7] xmm0[12:15]} |
| pshufb xmm0, xmm6 |
| movdqa [edx + 32], xmm2 |
| por xmm0, xmm7 |
| pshufb xmm1, xmm6 |
| movdqa [edx], xmm0 |
| por xmm1, xmm7 |
| palignr xmm3, xmm3, 4 // xmm3 = { xmm3[4:15]} |
| pshufb xmm3, xmm6 |
| movdqa [edx + 16], xmm1 |
| por xmm3, xmm7 |
| movdqa [edx + 48], xmm3 |
| lea edx, [edx + 64] |
| sub ecx, 16 |
| ja convertloop |
| ret |
| } |
| } |
| |
| __declspec(naked) |
| void FastConvertYUVToRGB32Row(const uint8* y_buf, |
| const uint8* u_buf, |
| const uint8* v_buf, |
| uint8* rgb_buf, |
| int width) { |
| __asm { |
| pushad |
| mov edx, [esp + 32 + 4] |
| mov edi, [esp + 32 + 8] |
| mov esi, [esp + 32 + 12] |
| mov ebp, [esp + 32 + 16] |
| mov ecx, [esp + 32 + 20] |
| |
| convertloop : |
| movzx eax, byte ptr [edi] |
| lea edi, [edi + 1] |
| movzx ebx, byte ptr [esi] |
| lea esi, [esi + 1] |
| movq mm0, [_kCoefficientsRgbY + 2048 + 8 * eax] |
| movzx eax, byte ptr [edx] |
| paddsw mm0, [_kCoefficientsRgbY + 4096 + 8 * ebx] |
| movzx ebx, byte ptr [edx + 1] |
| movq mm1, [_kCoefficientsRgbY + 8 * eax] |
| lea edx, [edx + 2] |
| movq mm2, [_kCoefficientsRgbY + 8 * ebx] |
| paddsw mm1, mm0 |
| paddsw mm2, mm0 |
| psraw mm1, 6 |
| psraw mm2, 6 |
| packuswb mm1, mm2 |
| movntq [ebp], mm1 |
| lea ebp, [ebp + 8] |
| sub ecx, 2 |
| ja convertloop |
| |
| popad |
| ret |
| } |
| } |
| |
| __declspec(naked) |
| void FastConvertYUVToBGRARow(const uint8* y_buf, |
| const uint8* u_buf, |
| const uint8* v_buf, |
| uint8* rgb_buf, |
| int width) { |
| __asm { |
| pushad |
| mov edx, [esp + 32 + 4] |
| mov edi, [esp + 32 + 8] |
| mov esi, [esp + 32 + 12] |
| mov ebp, [esp + 32 + 16] |
| mov ecx, [esp + 32 + 20] |
| |
| convertloop : |
| movzx eax, byte ptr [edi] |
| lea edi, [edi + 1] |
| movzx ebx, byte ptr [esi] |
| lea esi, [esi + 1] |
| movq mm0, [_kCoefficientsBgraY + 2048 + 8 * eax] |
| movzx eax, byte ptr [edx] |
| paddsw mm0, [_kCoefficientsBgraY + 4096 + 8 * ebx] |
| movzx ebx, byte ptr [edx + 1] |
| movq mm1, [_kCoefficientsBgraY + 8 * eax] |
| lea edx, [edx + 2] |
| movq mm2, [_kCoefficientsBgraY + 8 * ebx] |
| paddsw mm1, mm0 |
| paddsw mm2, mm0 |
| psraw mm1, 6 |
| psraw mm2, 6 |
| packuswb mm1, mm2 |
| movntq [ebp], mm1 |
| lea ebp, [ebp + 8] |
| sub ecx, 2 |
| ja convertloop |
| |
| popad |
| ret |
| } |
| } |
| |
| __declspec(naked) |
| void FastConvertYUVToABGRRow(const uint8* y_buf, |
| const uint8* u_buf, |
| const uint8* v_buf, |
| uint8* rgb_buf, |
| int width) { |
| __asm { |
| pushad |
| mov edx, [esp + 32 + 4] |
| mov edi, [esp + 32 + 8] |
| mov esi, [esp + 32 + 12] |
| mov ebp, [esp + 32 + 16] |
| mov ecx, [esp + 32 + 20] |
| |
| convertloop : |
| movzx eax, byte ptr [edi] |
| lea edi, [edi + 1] |
| movzx ebx, byte ptr [esi] |
| lea esi, [esi + 1] |
| movq mm0, [_kCoefficientsAbgrY + 2048 + 8 * eax] |
| movzx eax, byte ptr [edx] |
| paddsw mm0, [_kCoefficientsAbgrY + 4096 + 8 * ebx] |
| movzx ebx, byte ptr [edx + 1] |
| movq mm1, [_kCoefficientsAbgrY + 8 * eax] |
| lea edx, [edx + 2] |
| movq mm2, [_kCoefficientsAbgrY + 8 * ebx] |
| paddsw mm1, mm0 |
| paddsw mm2, mm0 |
| psraw mm1, 6 |
| psraw mm2, 6 |
| packuswb mm1, mm2 |
| movntq [ebp], mm1 |
| lea ebp, [ebp + 8] |
| sub ecx, 2 |
| ja convertloop |
| |
| popad |
| ret |
| } |
| } |
| |
| __declspec(naked) |
| void FastConvertYUV444ToRGB32Row(const uint8* y_buf, |
| const uint8* u_buf, |
| const uint8* v_buf, |
| uint8* rgb_buf, |
| int width) { |
| __asm { |
| pushad |
| mov edx, [esp + 32 + 4] // Y |
| mov edi, [esp + 32 + 8] // U |
| mov esi, [esp + 32 + 12] // V |
| mov ebp, [esp + 32 + 16] // rgb |
| mov ecx, [esp + 32 + 20] // width |
| |
| convertloop : |
| movzx eax, byte ptr [edi] |
| lea edi, [edi + 1] |
| movzx ebx, byte ptr [esi] |
| lea esi, [esi + 1] |
| movq mm0, [_kCoefficientsRgbY + 2048 + 8 * eax] |
| movzx eax, byte ptr [edx] |
| paddsw mm0, [_kCoefficientsRgbY + 4096 + 8 * ebx] |
| lea edx, [edx + 1] |
| paddsw mm0, [_kCoefficientsRgbY + 8 * eax] |
| psraw mm0, 6 |
| packuswb mm0, mm0 |
| movd [ebp], mm0 |
| lea ebp, [ebp + 4] |
| sub ecx, 1 |
| ja convertloop |
| |
| popad |
| ret |
| } |
| } |
| |
| __declspec(naked) |
| void FastConvertYToRGB32Row(const uint8* y_buf, |
| uint8* rgb_buf, |
| int width) { |
| __asm { |
| push ebx |
| mov eax, [esp + 4 + 4] // Y |
| mov edx, [esp + 4 + 8] // rgb |
| mov ecx, [esp + 4 + 12] // width |
| |
| convertloop : |
| movzx ebx, byte ptr [eax] |
| movq mm0, [_kCoefficientsRgbY + 8 * ebx] |
| psraw mm0, 6 |
| movzx ebx, byte ptr [eax + 1] |
| movq mm1, [_kCoefficientsRgbY + 8 * ebx] |
| psraw mm1, 6 |
| packuswb mm0, mm1 |
| lea eax, [eax + 2] |
| movq [edx], mm0 |
| lea edx, [edx + 8] |
| sub ecx, 2 |
| ja convertloop |
| |
| pop ebx |
| ret |
| } |
| } |
| |
| #endif |
| |
| } // extern "C" |
