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Unified Diff: media/base/simd/convert_row_yuv.inc

Issue 7003082: Implements RGB to YV12 conversion in YASM. (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: '' Created 9 years, 6 months ago
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Index: media/base/simd/convert_row_yuv.inc
===================================================================
--- media/base/simd/convert_row_yuv.inc (revision 0)
+++ media/base/simd/convert_row_yuv.inc (revision 0)
@@ -0,0 +1,607 @@
+; Copyright (c) 2011 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.
+
+;
+; void media::simd::ConvertYUVtoRGBARow(const uint8* y,
fbarchard 2011/06/10 17:29:45 ConvertYUVtoRGBARow suggest ConvertYUVtoARGBRow F
+; const uint8* u,
+; const uint8* v,
+; uint8* rgba,
+; int width);
+; void media::simd::ConvertYUVtoRGBRow(const uint8* y,
+; const uint8* u,
+; const uint8* v,
+; uint8* rgb,
+; int width);
+;
+; Converts a row of YUV (4:1:1) pixels to the RGB colorspace. This function
+; reads YUV pixels from right to left, convert their colorspace to RGB, and
+; write the converted pixels to the output buffers. The following code snippet
+; represents the rough structure of this fucntion.
+;
+; if (width & 1) {
+; --width;
+; convert_one_pixel(y, u, v, rgba, width);
+; }
+; if (width & 2) {
+; width -= 2;
+; convert_two_pixels(y, u, v, rgba, width);
+; }
+; while (width) {
+; width -= 4;
+; convert_four_pixels(y, u, v, rgba, width);
+; }
+;
+; This function has pseudo-code snippets to describe its behaviors. For
+; simplicity, they use the following notations.
+;
+; #define Y(n) y[n] - 16
+; #define U(n) u[n] - 128
+; #define V(n) v[n] - 128
+; #define FIX(n) (n * (1 << SHIFT_BITS) * 0.5)
+; #define ToByte(n) ((n < 0) ? 0 : (n > 255 ? 255 : n))
+;
+; union {
+; int32 d[4];
+; int16 w[8];
+; int8 b[16];
+; } xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7
+;
+; int ToByte(int n) {
+; if (n < 0) return n;
+; else if (n > 255) return 255;
+; return n;
+; }
+
+; Input Parameters
+%ifdef __x86_64__
+%ifdef WIN64
+%define PARAM_Y(r) rcx
+%define PARAM_U(r) rdx
+%define PARAM_V(r) r8
+%define PARAM_RGBA(r) r9
+%define PARAM_WIDTH(r) INT [(r) + SIZEOF_POINTER * 2]
+%else
+%define PARAM_Y(r) rdi
+%define PARAM_U(r) rsi
+%define PARAM_V(r) rdx
+%define PARAM_RGBA(r) rcx
+%define PARAM_WIDTH(r) r8
+%endif
+%else
+%define PARAM_Y(r) POINTER [(r) + SIZEOF_POINTER * 2 + SIZEOF_POINTER * 0]
+%define PARAM_U(r) POINTER [(r) + SIZEOF_POINTER * 2 + SIZEOF_POINTER * 1]
+%define PARAM_V(r) POINTER [(r) + SIZEOF_POINTER * 2 + SIZEOF_POINTER * 2]
+%define PARAM_RGBA(r) POINTER [(r) + SIZEOF_POINTER * 2 + SIZEOF_POINTER * 3]
+%define PARAM_WIDTH(r) INT [(r) + SIZEOF_POINTER * 2 + SIZEOF_POINTER * 4]
+%endif ; __x86_64__
+
+; Local variables used in this function.
+%define INT_WIDTH32 eax
+%define INT_WIDTH8 al
+
+%define INT_PIXEL32 ebx
+%define INT_PIXEL16 bx
+%define INT_PIXEL8 bl
+
+%ifdef __x86_64__
+%define INT_WIDTH rax
+%define INT_PIXEL rbx
+%define PTR_Y PARAM_Y(_EBP_)
+%define PTR_U PARAM_U(_EBP_)
+%define PTR_V PARAM_V(_EBP_)
+%define PTR_RGBA PARAM_RGBA(_EBP_)
+%else
+%define INT_WIDTH eax
+%define INT_PIXEL ebx
+%define PTR_RGBA ecx
+%define PTR_Y edx
+%define PTR_U esi
+%define PTR_V edi
+%endif
+
+%define XMM_TABLE0 xmm7
+%define XMM_TABLE1 xmm6
+%define XMM_RGBA xmm5
+%define XMM_ZERO xmm4
+
+ align 16
+ global EXTN(SYMBOL_NAME) PRIVATE
+
+EXTN(SYMBOL_NAME):
+ push _EBP_
+ mov _EBP_, _ESP_
+
+ ; Save the resisters used in this function. We do not need to save eax, ecx,
+ ; or edx even though this function uses them. (Callers save them.)
+ push _EBX_
+ push _ESI_
+ push _EDI_
+
+ ; Copy the tables used in this function to xmm6 and xmm7.
+ lea _EAX_, [SIMD_ConvertYUVtoRGBA_kTable]
+ movdqa XMM_TABLE0, XMMWORD [_EAX_ + 0]
+ movdqa XMM_TABLE1, XMMWORD [_EAX_ + 16]
+
+ ; Copy the input parameters to registers. (We do not need to copy the input
+ ; pointers on x64 because x64 uses registers to provide the first five
+ ; parameters and we can use them.)
+ mov INT_WIDTH, PARAM_WIDTH(_EBP_)
+%ifndef __x86_64__
+ mov PTR_RGBA, PARAM_RGBA(_EBP_)
+ mov PTR_Y, PARAM_Y(_EBP_)
+ mov PTR_U, PARAM_U(_EBP_)
+ mov PTR_V, PARAM_V(_EBP_)
+%endif
+
+.convert_one_pixel:
+ ; Divide the input width by 2 so it represents the offset for u or v. When
+ ; this width is odd, we read the rightmost Y pixel, U pixel, and V pixel to
+ ; convert its colorspace to RGB.
+ sar INT_WIDTH, 1
+ jnc .convert_two_pixels
+
+ movzx INT_PIXEL32, BYTE [PTR_Y + INT_WIDTH * 2]
+ movd xmm0, INT_PIXEL32
+ movzx INT_PIXEL32, BYTE [PTR_U + INT_WIDTH]
+ movd xmm1, INT_PIXEL32
+ movzx INT_PIXEL32, BYTE [PTR_V + INT_WIDTH]
+ movd xmm2, INT_PIXEL32
+
+ ; xmm0.w[0] = Y(0); xmm0.w[1] = U(0); xmm0.w[2] = V(0); xmm0.w[3] = FIX(0.5);
+ ; xmm0.w[4] = Y(1); xmm0.w[5] = U(0); xmm0.w[6] = V(0); xmm0.w[7] = FIX(0.5);
+ pxor XMM_ZERO, XMM_ZERO
+ punpcklbw xmm0, XMM_ZERO
+ punpcklwd xmm0, XMM_ZERO
+
+ punpcklbw xmm1, XMM_ZERO
+ punpcklwd xmm1, XMM_ZERO
+ pshufd xmm1, xmm1, 01010000B
+ pslld xmm1, 8
+ por xmm0, xmm1
+
+ punpcklbw xmm2, XMM_ZERO
+ punpcklwd xmm2, XMM_ZERO
+ pshufd xmm2, xmm2, 01010000B
+ pslld xmm2, 16
+ por xmm0, xmm2
+
+ punpcklbw xmm0, XMM_ZERO
+
+ pshufd xmm2, XMM_TABLE0, 01000100B
+ paddsw xmm0, xmm2
+
+ ; Set up the result pixels.
+%if ALPHA == 0 || PIXELSIZE == 3
+ ; xmm5.d[0] = xmm5.d[1] = xmm5.d[2] = xmm5.d[3] = 0;
+ pxor XMM_RGBA, XMM_RGBA
+%else
+ ; xmm5.d[0] = xmm5.d[1] = xmm5.d[2] = xmm5.d[3] = 0xFF000000;
+ pcmpeqd XMM_RGBA, XMM_RGBA
+ psrad XMM_RGBA, 24
+ pslld XMM_RGBA, 24
+%endif
+
+ ; Calculate r[0].
+ ; xmm2.d[0] = FIX(1.164) * Y(0) + 0 * U(0);
+ ; xmm2.d[1] = FIX(1.596) * V(0) + FIX(0.5);
+ movdqa xmm2, xmm0
+ pshufd xmm3, XMM_TABLE0, 11101110B
+ pmaddwd xmm2, xmm3
+
+ ; xmm2.d[0] = (xmm2.d[0] + xmm2.d[1]) / FIX(1);
+ pshufd xmm3, xmm2, 11011101B
+ pshufd xmm2, xmm2, 10001000B
+ paddd xmm2, xmm3
+ psrad xmm2, SHIFT_BITS
+
+ ; xmm5.b[02] = ToByte(xmm2.d[0]);
+ packssdw xmm2, xmm2
+ packuswb xmm2, xmm2
+ punpckhbw xmm2, XMM_ZERO
+ punpcklbw xmm2, XMM_ZERO
+ pslld xmm2, 16
+ por XMM_RGBA, xmm2
+
+ ; Calculate g[0].
+ ; xmm2.d[0] = FIX(1.164) * Y(0) + -FIX(0.391) * U(0);
+ ; xmm2.d[1] = -FIX(0.813) * V(0) + FIX(0.5);
+ movdqa xmm2, xmm0
+ pshufd xmm3, XMM_TABLE1, 01000100B
+ pmaddwd xmm2, xmm3
+
+ ; xmm2.d[0] = (xmm2.d[0] + xmm2.d[1]) / FIX(1);
+ pshufd xmm3, xmm2, 11011101B
+ shufps xmm2, xmm2, 10001000B
+ paddd xmm2, xmm3
+ psrad xmm2, SHIFT_BITS
+
+ ; xmm5.b[01] = ToByte(xmm2.d[0]);
+ packssdw xmm2, xmm2
+ packuswb xmm2, xmm2
+ punpckhbw xmm2, XMM_ZERO
+ punpcklbw xmm2, XMM_ZERO
+ pslld xmm2, 8
+ por XMM_RGBA, xmm2
+
+ ; Calculate b[0].
+ ; xmm2.d[0] = FIX(1.164) * Y(0) + FIX(2.018) * U(0);
+ ; xmm2.d[1] = 0 * V(0) + FIX(0.5);
+ movdqa xmm2, xmm0
+ pshufd xmm3, XMM_TABLE1, 11101110B
+ pmaddwd xmm2, xmm3
+
+ ; xmm2.d[0] = (xmm2.d[0] + xmm2.d[1]) / FIX(1);
+ pshufd xmm3, xmm2, 11011101B
+ shufps xmm2, xmm2, 10001000B
+ paddd xmm2, xmm3
+ psrad xmm2, SHIFT_BITS
+
+ ; xmm5.b[00] = ToByte(xmm2.d[0]);
+ packssdw xmm2, xmm2
+ packuswb xmm2, xmm2
+ punpckhbw xmm2, XMM_ZERO
+ punpcklbw xmm2, XMM_ZERO
+ por XMM_RGBA, xmm2
+
+%if PIXELSIZE == 4
+ movd DWORD [PTR_RGBA + INT_WIDTH * 4 * 2], XMM_RGBA
+%else
+ movd xmm0, INT_WIDTH32
+ lea INT_WIDTH, [INT_WIDTH + INT_WIDTH * 2]
+ movd INT_PIXEL32, XMM_RGBA
+ mov WORD [PTR_RGBA + INT_WIDTH * 2], INT_PIXEL16
+ sar INT_PIXEL32, 16
+ mov BYTE [PTR_RGBA + INT_WIDTH * 2 + 2], INT_PIXEL8
+ movd INT_WIDTH32, xmm0
+%endif
+
+.convert_two_pixels:
+ ; When the input width is not a multiple of four, we read the rightmost two Y
+ ; pixels, one U pixel, and one V pixel to convert their colorspace to RGB.
+ ; This code stores two RGBA pixels.
+ test INT_WIDTH8, 1
+ jz .convert_four_pixels
+ sub INT_WIDTH8, 2 / 2
+
+ movzx INT_PIXEL32, WORD [PTR_Y + INT_WIDTH * 2]
+ movd xmm0, INT_PIXEL32
+ movzx INT_PIXEL32, BYTE [PTR_U + INT_WIDTH]
+ movd xmm1, INT_PIXEL32
+ movzx INT_PIXEL32, BYTE [PTR_V + INT_WIDTH]
+ movd xmm2, INT_PIXEL32
+
+ ; xmm0.w[0] = Y(0); xmm0.w[1] = U(0); xmm0.w[2] = V(0); xmm0.w[3] = FIX(0.5);
+ ; xmm0.w[4] = Y(1); xmm0.w[5] = U(0); xmm0.w[6] = V(0); xmm0.w[7] = FIX(0.5);
+ pxor XMM_ZERO, XMM_ZERO
+ punpcklbw xmm0, XMM_ZERO
+ punpcklwd xmm0, XMM_ZERO
+
+ punpcklbw xmm1, XMM_ZERO
+ punpcklwd xmm1, XMM_ZERO
+ pshufd xmm1, xmm1, 01010000B
+ pslld xmm1, 8
+ por xmm0, xmm1
+
+ punpcklbw xmm2, XMM_ZERO
+ punpcklwd xmm2, XMM_ZERO
+ pshufd xmm2, xmm2, 01010000B
+ pslld xmm2, 16
+ por xmm0, xmm2
+
+ punpcklbw xmm0, XMM_ZERO
+
+ pshufd xmm2, XMM_TABLE0, 01000100B
+ paddsw xmm0, xmm2
+
+ ; Set up the result pixels.
+%if ALPHA == 0 || PIXELSIZE == 3
+ ; xmm5.d[0] = xmm5.d[1] = xmm5.d[2] = xmm5.d[3] = 0;
+ pxor XMM_RGBA, XMM_RGBA
+%else
+ ; xmm5.d[0] = xmm5.d[1] = xmm5.d[2] = xmm5.d[3] = 0xFF000000;
+ pcmpeqd XMM_RGBA, XMM_RGBA
+ psrad XMM_RGBA, 24
+ pslld XMM_RGBA, 24
+%endif
+
+ ; Calculate r[0] and r[1].
+ ; xmm2.d[0] = FIX(1.164) * Y(0) + 0 * U(0);
+ ; xmm2.d[1] = FIX(1.596) * V(0) + FIX(0.5);
+ ; xmm2.d[2] = FIX(1.164) * Y(1) + 0 * U(0);
+ ; xmm2.d[3] = FIX(1.596) * V(0) + FIX(0.5);
+ movdqa xmm2, xmm0
+ pshufd xmm3, XMM_TABLE0, 11101110B
+ pmaddwd xmm2, xmm3
fbarchard 2011/06/10 17:29:45 would it make sense to do a pmaddubsw version? Us
+
+ ; xmm2.d[0] = (xmm2.d[0] + xmm2.d[1]) / FIX(1);
+ ; xmm2.d[1] = (xmm2.d[2] + xmm2.d[3]) / FIX(1);
+ pshufd xmm3, xmm2, 11011101B
+ pshufd xmm2, xmm2, 10001000B
+ paddd xmm2, xmm3
+ psrad xmm2, SHIFT_BITS
+
+ ; xmm5.b[02] = ToByte(xmm2.d[0]); xmm5.b[06] = ToByte(xmm2.d[1]);
+ packssdw xmm2, xmm2
+ packuswb xmm2, xmm2
+ punpckhbw xmm2, XMM_ZERO
+ punpcklbw xmm2, XMM_ZERO
+ pslld xmm2, 16
+ por XMM_RGBA, xmm2
+
+ ; Calculate g[0] and g[1].
+ ; xmm2.d[0] = FIX(1.164) * Y(0) + -FIX(0.391) * U(0);
+ ; xmm2.d[1] = -FIX(0.813) * V(0) + FIX(0.5);
+ ; xmm2.d[2] = FIX(1.164) * Y(1) + -FIX(0.391) * U(0);
+ ; xmm2.d[3] = -FIX(0.813) * V(0) + FIX(0.5);
+ movdqa xmm2, xmm0
+ pshufd xmm3, XMM_TABLE1, 01000100B
+ pmaddwd xmm2, xmm3
+
+ ; xmm2.d[0] = (xmm2.d[0] + xmm2.d[1]) / FIX(1);
+ ; xmm2.d[1] = (xmm2.d[2] + xmm2.d[3]) / FIX(1);
+ pshufd xmm3, xmm2, 11011101B
+ shufps xmm2, xmm2, 10001000B
+ paddd xmm2, xmm3
+ psrad xmm2, SHIFT_BITS
+
+ ; xmm5.b[01] = ToByte(xmm2.d[0]); xmm5.b[05] = ToByte(xmm2.d[1]);
+ packssdw xmm2, xmm2
+ packuswb xmm2, xmm2
+ punpckhbw xmm2, XMM_ZERO
+ punpcklbw xmm2, XMM_ZERO
+ pslld xmm2, 8
+ por XMM_RGBA, xmm2
+
+ ; Calculate b[0] and b[1].
+ ; xmm2.d[0] = FIX(1.164) * Y(0) + FIX(2.018) * U(0);
+ ; xmm2.d[1] = FIX(0.000) * V(0) + FIX(0.5);
+ ; xmm2.d[2] = FIX(1.164) * Y(1) + FIX(2.018) * U(0);
+ ; xmm2.d[3] = FIX(0.000) * V(0) + FIX(0.5);
+ movdqa xmm2, xmm0
+ pshufd xmm3, XMM_TABLE1, 11101110B
+ pmaddwd xmm2, xmm3
+
+ ; xmm2.d[0] = (xmm2.d[0] + xmm2.d[1]) / FIX(1);
+ ; xmm2.d[1] = (xmm2.d[2] + xmm2.d[3]) / FIX(1);
+ pshufd xmm3, xmm2, 11011101B
+ shufps xmm2, xmm2, 10001000B
+ paddd xmm2, xmm3
+ psrad xmm2, SHIFT_BITS
+
+ ; xmm5.b[00] = ToByte(xmm2.d[0]); xmm5.b[04] = ToByte(xmm2.d[1]);
+ packssdw xmm2, xmm2
+ packuswb xmm2, xmm2
+ punpckhbw xmm2, XMM_ZERO
+ punpcklbw xmm2, XMM_ZERO
+ por XMM_RGBA, xmm2
+
+%if PIXELSIZE == 3
+ ; Pack two RGBA pixels to two RGB pixels.
+ movdqa xmm0, XMM_RGBA
+ psrldq xmm0, 4
+ pslldq xmm0, 4
+ pxor XMM_RGBA, xmm0
+
+ psrldq xmm0, 1
+ por XMM_RGBA, xmm0
+%endif
+
+%if PIXELSIZE == 4
+ movq MMWORD [PTR_RGBA + INT_WIDTH * 4 * 2], XMM_RGBA
+%else
+ movd xmm0, INT_WIDTH
+ lea INT_WIDTH, [INT_WIDTH + INT_WIDTH * 2]
+ movd DWORD [PTR_RGBA + INT_WIDTH * 2], XMM_RGBA
+ psrldq XMM_RGBA, 4
+ movd INT_PIXEL32, XMM_RGBA
+ mov WORD [PTR_RGBA + INT_WIDTH * 2 + 4], INT_PIXEL16
+ movd INT_WIDTH, xmm0
+%endif
+
+.convert_four_pixels:
+ ; Read four Y pixels, two U pixels, and two V pixels to convert their
+ ; colorspace to RGB. This code stores four RGBA (or RGB) pixels.
+ test INT_WIDTH32, INT_WIDTH32
+ jz .convert_finish
+ sub INT_WIDTH32, 4 / 2
+
+ movd xmm0, DWORD [PTR_Y + INT_WIDTH * 2]
+ movzx INT_PIXEL32, WORD [PTR_U + INT_WIDTH]
+ movd xmm1, INT_PIXEL32
+ movzx INT_PIXEL32, WORD [PTR_V + INT_WIDTH]
+ movd xmm2, INT_PIXEL32
+
+ ; xmm0.w[0] = Y(0); xmm0.w[1] = U(0); xmm0.w[2] = V(0); xmm0.w[3] = FIX(0.5);
+ ; xmm0.w[4] = Y(1); xmm0.w[5] = U(0); xmm0.w[6] = V(0); xmm0.w[7] = FIX(0.5);
+ ; xmm1.w[0] = Y(2); xmm1.w[1] = U(1); xmm1.w[2] = V(1); xmm1.w[3] = FIX(0.5);
+ ; xmm1.w[4] = Y(3); xmm1.w[5] = U(1); xmm1.w[6] = V(1); xmm1.w[7] = FIX(0.5);
+ pxor XMM_ZERO, XMM_ZERO
+ punpcklbw xmm0, XMM_ZERO
+ punpcklwd xmm0, XMM_ZERO
+
+ punpcklbw xmm1, XMM_ZERO
+ punpcklwd xmm1, XMM_ZERO
+ pshufd xmm1, xmm1, 01010000B
+ pslld xmm1, 8
+ por xmm0, xmm1
+
+ punpcklbw xmm2, XMM_ZERO
+ punpcklwd xmm2, XMM_ZERO
+ pshufd xmm2, xmm2, 01010000B
+ pslld xmm2, 16
+ por xmm0, xmm2
+
+ movdqa xmm1, xmm0
+ punpckhbw xmm1, XMM_ZERO
+ punpcklbw xmm0, XMM_ZERO
+
+ pshufd xmm2, XMM_TABLE0, 01000100B
+ paddsw xmm0, xmm2
+ paddsw xmm1, xmm2
+
+ ; Set up the result pixels.
+%if ALPHA == 0 || PIXELSIZE == 3
+ ; xmm5.d[0] = xmm5.d[1] = xmm5.d[2] = xmm5.d[3] = 0;
+ pxor XMM_RGBA, XMM_RGBA
+%else
+ ; xmm5.d[0] = xmm5.d[1] = xmm5.d[2] = xmm5.d[3] = 0xFF000000;
+ pcmpeqd XMM_RGBA, XMM_RGBA
+ psrad XMM_RGBA, 24
+ pslld XMM_RGBA, 24
+%endif
+
+ ; Calculate r[0], r[1], r[2], and r[3].
+ ; xmm2.d[0] = FIX(1.164) * Y(0) + 0 * U(0);
+ ; xmm2.d[1] = FIX(1.596) * V(0) + FIX(0.5);
+ ; xmm2.d[2] = FIX(1.164) * Y(1) + 0 * U(0);
+ ; xmm2.d[3] = FIX(1.596) * V(0) + FIX(0.5);
+ ; xmm3.d[0] = FIX(1.164) * Y(2) + 0 * U(0);
+ ; xmm3.d[1] = FIX(1.596) * V(1) + FIX(0.5);
+ ; xmm3.d[2] = FIX(1.164) * Y(2) + 0 * U(0);
+ ; xmm3.d[3] = FIX(1.596) * V(1) + FIX(0.5);
+ movdqa xmm2, xmm0
+ movdqa xmm3, xmm1
+ pshufd xmm4, XMM_TABLE0, 11101110B
+ pmaddwd xmm2, xmm4
+ pmaddwd xmm3, xmm4
+
+ ; xmm2.d[0] = (xmm2.d[0] + xmm2.d[1]) / FIX(1);
+ ; xmm2.d[1] = (xmm2.d[2] + xmm2.d[3]) / FIX(1);
+ ; xmm2.d[2] = (xmm3.d[0] + xmm3.d[1]) / FIX(1);
+ ; xmm2.d[3] = (xmm3.d[2] + xmm3.d[3]) / FIX(1);
+ movdqa xmm4, xmm2
+ shufps xmm4, xmm3, 10001000B
+ shufps xmm2, xmm3, 11011101B
+ paddd xmm2, xmm4
+ psrad xmm2, SHIFT_BITS
+
+ ; xmm5.b[02] = ToByte(xmm2.d[0]); xmm5.b[06] = ToByte(xmm2.d[1]);
+ ; xmm5.b[10] = ToByte(xmm2.d[2]); xmm5.b[14] = ToByte(xmm2.d[3]);
+ packssdw xmm2, xmm2
+ packuswb xmm2, xmm2
+ pxor XMM_ZERO, XMM_ZERO
+ punpckhbw xmm2, XMM_ZERO
+ punpcklbw xmm2, XMM_ZERO
+ pslld xmm2, 16
+ por XMM_RGBA, xmm2
+
+ ; Calculate g[0], g[1], g[2], and g[3].
+ ; xmm2.d[0] = FIX(1.164) * Y(0) + -FIX(0.391) * U(0);
+ ; xmm2.d[1] = -FIX(0.813) * V(0) + FIX(0.5);
+ ; xmm2.d[2] = FIX(1.164) * Y(1) + -FIX(0.391) * U(0);
+ ; xmm2.d[3] = -FIX(0.813) * V(0) + FIX(0.5);
+ ; xmm3.d[0] = FIX(1.164) * Y(2) + -FIX(0.391) * U(0);
+ ; xmm3.d[1] = -FIX(0.813) * V(1) + FIX(0.5);
+ ; xmm3.d[2] = FIX(1.164) * Y(2) + -FIX(0.391) * U(0);
+ ; xmm3.d[3] = -FIX(0.813) * V(1) + FIX(0.5);
+ movdqa xmm2, xmm0
+ movdqa xmm3, xmm1
+ pshufd xmm4, XMM_TABLE1, 01000100B
+ pmaddwd xmm2, xmm4
+ pmaddwd xmm3, xmm4
+
+ ; xmm2.d[0] = (xmm2.d[0] + xmm2.d[1]) / FIX(1);
+ ; xmm2.d[1] = (xmm2.d[2] + xmm2.d[3]) / FIX(1);
+ ; xmm2.d[2] = (xmm3.d[0] + xmm3.d[1]) / FIX(1);
+ ; xmm2.d[3] = (xmm3.d[2] + xmm3.d[3]) / FIX(1);
+ movdqa xmm4, xmm2
+ shufps xmm4, xmm3, 10001000B
+ shufps xmm2, xmm3, 11011101B
+ paddd xmm2, xmm4
+ psrad xmm2, SHIFT_BITS
+
+ ; xmm5.b[01] = ToByte(xmm2.d[0]); xmm5.b[05] = ToByte(xmm2.d[1]);
+ ; xmm5.b[09] = ToByte(xmm2.d[2]); xmm5.b[13] = ToByte(xmm2.d[3]);
+ packssdw xmm2, xmm2
+ packuswb xmm2, xmm2
+ pxor XMM_ZERO, XMM_ZERO
+ punpckhbw xmm2, XMM_ZERO
+ punpcklbw xmm2, XMM_ZERO
+ pslld xmm2, 8
+ por XMM_RGBA, xmm2
+
+ ; Calculate b[0], b[1], b[2], and b[3].
+ ; xmm2.d[0] = FIX(1.164) * Y(0) + FIX(2.018) * U(0);
+ ; xmm2.d[1] = FIX(0.000) * V(0) + FIX(0.5);
+ ; xmm2.d[2] = FIX(1.164) * Y(1) + FIX(2.018) * U(0);
+ ; xmm2.d[3] = FIX(0.000) * V(0) + FIX(0.5);
+ ; xmm3.d[0] = FIX(1.164) * Y(2) + FIX(2.018) * U(0);
+ ; xmm3.d[1] = FIX(0.000) * V(1) + FIX(0.5);
+ ; xmm3.d[2] = FIX(1.164) * Y(2) + FIX(2.018) * U(0);
+ ; xmm3.d[3] = FIX(0.000) * V(1) + FIX(0.5);
+ movdqa xmm2, xmm0
+ movdqa xmm3, xmm1
+ pshufd xmm4, XMM_TABLE1, 11101110B
+ pmaddwd xmm2, xmm4
+ pmaddwd xmm3, xmm4
+
+ ; xmm2.d[0] = (xmm2.d[0] + xmm2.d[1]) / FIX(1);
+ ; xmm2.d[1] = (xmm2.d[2] + xmm2.d[3]) / FIX(1);
+ ; xmm2.d[2] = (xmm3.d[0] + xmm3.d[1]) / FIX(1);
+ ; xmm2.d[3] = (xmm3.d[2] + xmm3.d[3]) / FIX(1);
+ movdqa xmm4, xmm2
+ shufps xmm4, xmm3, 10001000B
+ shufps xmm2, xmm3, 11011101B
+ paddd xmm2, xmm4
+ psrad xmm2, SHIFT_BITS
+
+ ; xmm5.b[00] = ToByte(xmm2.d[0]); xmm5.b[04] = ToByte(xmm2.d[1]);
+ ; xmm5.b[08] = ToByte(xmm2.d[2]); xmm5.b[12] = ToByte(xmm2.d[3]);
+ packssdw xmm2, xmm2
+ packuswb xmm2, xmm2
+ pxor XMM_ZERO, XMM_ZERO
+ punpckhbw xmm2, XMM_ZERO
+ punpcklbw xmm2, XMM_ZERO
+ por XMM_RGBA, xmm2
+
+%if PIXELSIZE == 3
+ ; Pack four RGBA pixels to four RGB pixels.
+ movdqa xmm0, XMM_RGBA
+ psrldq xmm0, 4
+ pslldq xmm0, 4
+ movdqa xmm1, XMM_RGBA
+ psrldq xmm1, 8
+ pslldq xmm1, 8
+ movdqa xmm2, XMM_RGBA
+ psrldq xmm2, 12
+ pslldq xmm2, 12
+
+ pxor XMM_RGBA, xmm0
+ pxor xmm0, xmm1
+ pxor xmm1, xmm2
+
+ psrldq xmm0, 1
+ por XMM_RGBA, xmm0
+ psrldq xmm1, 2
+ por XMM_RGBA, xmm1
+ psrldq xmm2, 3
+ por XMM_RGBA, xmm2
+%endif
+
+%if PIXELSIZE == 4
+ movdqu XMMWORD [PTR_RGBA + INT_WIDTH * 4 * 2], XMM_RGBA
+%else
+ mov _EBX_, INT_WIDTH
+ lea _EBX_, [_EBX_ + _EBX_ * 2]
+ movq MMWORD [PTR_RGBA + _EBX_ * 2], XMM_RGBA
+ psrldq XMM_RGBA, 8
+ movd DWORD [PTR_RGBA + _EBX_ * 2 + 8], XMM_RGBA
+%endif
+ jmp .convert_four_pixels
fbarchard 2011/06/10 17:29:45 more efficient to put conditional loop at bottom.
+
+.convert_finish:
+ ; Restore the registers used in this function, the stack frame, and the stack
+ ; pointer.
+ pop _EDI_
+ pop _ESI_
+ pop _EBX_
+
+ mov _ESP_, _EBP_
+ pop _EBP_
+
+ ret
+
+ ; For some reason, the OS X linker does not honor the request to align the
+ ; segment unless we do this.
+ align 16
Property changes on: media\base\simd\convert_row_yuv.inc
___________________________________________________________________
Added: svn:eol-style
+ LF
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