diff options
Diffstat (limited to 'media/base/yuv_row_win.cc')
| -rw-r--r-- | media/base/yuv_row_win.cc | 123 |
1 files changed, 114 insertions, 9 deletions
diff --git a/media/base/yuv_row_win.cc b/media/base/yuv_row_win.cc index 1e11d94..34affa8 100644 --- a/media/base/yuv_row_win.cc +++ b/media/base/yuv_row_win.cc @@ -1,4 +1,4 @@ -// Copyright (c) 2009 The Chromium Authors. All rights reserved. +// Copyright (c) 2010 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. @@ -512,21 +512,21 @@ void ScaleYUVToRGB32Row(const uint8* y_buf, scaleloop : mov eax, ebx - sar eax, 5 + sar eax, 17 movzx eax, byte ptr [edi + eax] movq mm0, [kCoefficientsRgbU + 8 * eax] mov eax, ebx - sar eax, 5 + sar eax, 17 movzx eax, byte ptr [esi + eax] paddsw mm0, [kCoefficientsRgbV + 8 * eax] mov eax, ebx add ebx, [esp + 32 + 24] // x += dx - sar eax, 4 + sar eax, 16 movzx eax, byte ptr [edx + eax] movq mm1, [kCoefficientsRgbY + 8 * eax] mov eax, ebx add ebx, [esp + 32 + 24] // x += dx - sar eax, 4 + sar eax, 16 movzx eax, byte ptr [edx + eax] movq mm2, [kCoefficientsRgbY + 8 * eax] paddsw mm1, mm0 @@ -544,15 +544,15 @@ void ScaleYUVToRGB32Row(const uint8* y_buf, jz scaledone mov eax, ebx - sar eax, 5 + sar eax, 17 movzx eax, byte ptr [edi + eax] movq mm0, [kCoefficientsRgbU + 8 * eax] mov eax, ebx - sar eax, 5 + sar eax, 17 movzx eax, byte ptr [esi + eax] paddsw mm0, [kCoefficientsRgbV + 8 * eax] mov eax, ebx - sar eax, 4 + sar eax, 16 movzx eax, byte ptr [edx + eax] movq mm1, [kCoefficientsRgbY + 8 * eax] paddsw mm1, mm0 @@ -565,5 +565,110 @@ void ScaleYUVToRGB32Row(const uint8* y_buf, ret } } -} // extern "C" +__declspec(naked) +void LinearScaleYUVToRGB32Row(const uint8* y_buf, + const uint8* u_buf, + const uint8* v_buf, + uint8* rgb_buf, + int width, + int scaled_dx) { +__asm { + pushad + mov edx, [esp + 32 + 4] + mov edi, [esp + 32 + 8] + mov ebp, [esp + 32 + 16] + mov ebx, 32768 + + // width = width * scaled_dx + ebx + mov ecx, [esp + 32 + 20] + imul ecx, [esp + 32 + 24] + add ecx, ebx + mov [esp + 32 + 20], ecx + jmp lscaleend +lscaleloop: + mov eax, ebx + sar eax, 0x11 + + movzx ecx, byte ptr [edi + eax] + movzx esi, byte ptr [edi + eax + 1] + mov eax, ebx + and eax, 0x1fffe + imul esi, eax + xor eax, 0x1fffe + imul ecx, eax + add ecx, esi + shr ecx, 17 + movq mm0, [kCoefficientsRgbU + 8 * ecx] + + mov esi, [esp + 0x2c] + mov eax, ebx + sar eax, 0x11 + + movzx ecx, byte ptr [esi + eax] + movzx esi, byte ptr [esi + eax + 1] + mov eax, ebx + and eax, 0x1fffe + imul esi, eax + xor eax, 0x1fffe + imul ecx, eax + add ecx, esi + shr ecx, 17 + paddsw mm0, [kCoefficientsRgbV + 8 * ecx] + + mov eax, ebx + sar eax, 0x10 + movzx ecx, byte ptr [edx + eax] + movzx esi, byte ptr [1 + edx + eax] + mov eax, ebx + add ebx, [esp + 0x38] + and eax, 0xffff + imul esi, eax + xor eax, 0xffff + imul ecx, eax + add ecx, esi + shr ecx, 16 + movq mm1, [kCoefficientsRgbY + 8 * ecx] + + cmp ebx, [esp + 0x34] + jge lscalelastpixel + + mov eax, ebx + sar eax, 0x10 + movzx ecx, byte ptr [edx + eax] + movzx esi, byte ptr [edx + eax + 1] + mov eax, ebx + add ebx, [esp + 0x38] + and eax, 0xffff + imul esi, eax + xor eax, 0xffff + imul ecx, eax + add ecx, esi + shr ecx, 16 + movq mm2, [kCoefficientsRgbY + 8 * ecx] + + paddsw mm1, mm0 + paddsw mm2, mm0 + psraw mm1, 0x6 + psraw mm2, 0x6 + packuswb mm1, mm2 + movntq [ebp], mm1 + add ebp, 0x8 + +lscaleend: + cmp ebx, [esp + 0x34] + jl lscaleloop + popad + ret + +lscalelastpixel: + paddsw mm1, mm0 + psraw mm1, 6 + packuswb mm1, mm1 + movd [ebp], mm1 + popad + ret +}; +} + +} // extern "C" |