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Unified Diff: source/libvpx/third_party/libyuv/source/row_common.cc

Issue 341293003: libvpx: Pull from upstream (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/libvpx/
Patch Set: Created 6 years, 6 months ago
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Index: source/libvpx/third_party/libyuv/source/row_common.cc
===================================================================
--- source/libvpx/third_party/libyuv/source/row_common.cc (revision 0)
+++ source/libvpx/third_party/libyuv/source/row_common.cc (revision 0)
@@ -0,0 +1,2286 @@
+/*
+ * Copyright 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 "third_party/libyuv/include/libyuv/row.h"
+
+#include <string.h> // For memcpy and memset.
+
+#include "third_party/libyuv/include/libyuv/basic_types.h"
+
+#ifdef __cplusplus
+namespace libyuv {
+extern "C" {
+#endif
+
+// llvm x86 is poor at ternary operator, so use branchless min/max.
+
+#define USE_BRANCHLESS 1
+#if USE_BRANCHLESS
+static __inline int32 clamp0(int32 v) {
+ return ((-(v) >> 31) & (v));
+}
+
+static __inline int32 clamp255(int32 v) {
+ return (((255 - (v)) >> 31) | (v)) & 255;
+}
+
+static __inline uint32 Clamp(int32 val) {
+ int v = clamp0(val);
+ return (uint32)(clamp255(v));
+}
+
+static __inline uint32 Abs(int32 v) {
+ int m = v >> 31;
+ return (v + m) ^ m;
+}
+#else // USE_BRANCHLESS
+static __inline int32 clamp0(int32 v) {
+ return (v < 0) ? 0 : v;
+}
+
+static __inline int32 clamp255(int32 v) {
+ return (v > 255) ? 255 : v;
+}
+
+static __inline uint32 Clamp(int32 val) {
+ int v = clamp0(val);
+ return (uint32)(clamp255(v));
+}
+
+static __inline uint32 Abs(int32 v) {
+ return (v < 0) ? -v : v;
+}
+#endif // USE_BRANCHLESS
+
+#ifdef LIBYUV_LITTLE_ENDIAN
+#define WRITEWORD(p, v) *(uint32*)(p) = v
+#else
+static inline void WRITEWORD(uint8* p, uint32 v) {
+ p[0] = (uint8)(v & 255);
+ p[1] = (uint8)((v >> 8) & 255);
+ p[2] = (uint8)((v >> 16) & 255);
+ p[3] = (uint8)((v >> 24) & 255);
+}
+#endif
+
+void RGB24ToARGBRow_C(const uint8* src_rgb24, uint8* dst_argb, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 b = src_rgb24[0];
+ uint8 g = src_rgb24[1];
+ uint8 r = src_rgb24[2];
+ dst_argb[0] = b;
+ dst_argb[1] = g;
+ dst_argb[2] = r;
+ dst_argb[3] = 255u;
+ dst_argb += 4;
+ src_rgb24 += 3;
+ }
+}
+
+void RAWToARGBRow_C(const uint8* src_raw, uint8* dst_argb, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 r = src_raw[0];
+ uint8 g = src_raw[1];
+ uint8 b = src_raw[2];
+ dst_argb[0] = b;
+ dst_argb[1] = g;
+ dst_argb[2] = r;
+ dst_argb[3] = 255u;
+ dst_argb += 4;
+ src_raw += 3;
+ }
+}
+
+void RGB565ToARGBRow_C(const uint8* src_rgb565, uint8* dst_argb, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 b = src_rgb565[0] & 0x1f;
+ uint8 g = (src_rgb565[0] >> 5) | ((src_rgb565[1] & 0x07) << 3);
+ uint8 r = src_rgb565[1] >> 3;
+ dst_argb[0] = (b << 3) | (b >> 2);
+ dst_argb[1] = (g << 2) | (g >> 4);
+ dst_argb[2] = (r << 3) | (r >> 2);
+ dst_argb[3] = 255u;
+ dst_argb += 4;
+ src_rgb565 += 2;
+ }
+}
+
+void ARGB1555ToARGBRow_C(const uint8* src_argb1555, uint8* dst_argb,
+ int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 b = src_argb1555[0] & 0x1f;
+ uint8 g = (src_argb1555[0] >> 5) | ((src_argb1555[1] & 0x03) << 3);
+ uint8 r = (src_argb1555[1] & 0x7c) >> 2;
+ uint8 a = src_argb1555[1] >> 7;
+ dst_argb[0] = (b << 3) | (b >> 2);
+ dst_argb[1] = (g << 3) | (g >> 2);
+ dst_argb[2] = (r << 3) | (r >> 2);
+ dst_argb[3] = -a;
+ dst_argb += 4;
+ src_argb1555 += 2;
+ }
+}
+
+void ARGB4444ToARGBRow_C(const uint8* src_argb4444, uint8* dst_argb,
+ int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 b = src_argb4444[0] & 0x0f;
+ uint8 g = src_argb4444[0] >> 4;
+ uint8 r = src_argb4444[1] & 0x0f;
+ uint8 a = src_argb4444[1] >> 4;
+ dst_argb[0] = (b << 4) | b;
+ dst_argb[1] = (g << 4) | g;
+ dst_argb[2] = (r << 4) | r;
+ dst_argb[3] = (a << 4) | a;
+ dst_argb += 4;
+ src_argb4444 += 2;
+ }
+}
+
+void ARGBToRGB24Row_C(const uint8* src_argb, uint8* dst_rgb, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 b = src_argb[0];
+ uint8 g = src_argb[1];
+ uint8 r = src_argb[2];
+ dst_rgb[0] = b;
+ dst_rgb[1] = g;
+ dst_rgb[2] = r;
+ dst_rgb += 3;
+ src_argb += 4;
+ }
+}
+
+void ARGBToRAWRow_C(const uint8* src_argb, uint8* dst_rgb, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 b = src_argb[0];
+ uint8 g = src_argb[1];
+ uint8 r = src_argb[2];
+ dst_rgb[0] = r;
+ dst_rgb[1] = g;
+ dst_rgb[2] = b;
+ dst_rgb += 3;
+ src_argb += 4;
+ }
+}
+
+void ARGBToRGB565Row_C(const uint8* src_argb, uint8* dst_rgb, int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ uint8 b0 = src_argb[0] >> 3;
+ uint8 g0 = src_argb[1] >> 2;
+ uint8 r0 = src_argb[2] >> 3;
+ uint8 b1 = src_argb[4] >> 3;
+ uint8 g1 = src_argb[5] >> 2;
+ uint8 r1 = src_argb[6] >> 3;
+ WRITEWORD(dst_rgb, b0 | (g0 << 5) | (r0 << 11) |
+ (b1 << 16) | (g1 << 21) | (r1 << 27));
+ dst_rgb += 4;
+ src_argb += 8;
+ }
+ if (width & 1) {
+ uint8 b0 = src_argb[0] >> 3;
+ uint8 g0 = src_argb[1] >> 2;
+ uint8 r0 = src_argb[2] >> 3;
+ *(uint16*)(dst_rgb) = b0 | (g0 << 5) | (r0 << 11);
+ }
+}
+
+void ARGBToARGB1555Row_C(const uint8* src_argb, uint8* dst_rgb, int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ uint8 b0 = src_argb[0] >> 3;
+ uint8 g0 = src_argb[1] >> 3;
+ uint8 r0 = src_argb[2] >> 3;
+ uint8 a0 = src_argb[3] >> 7;
+ uint8 b1 = src_argb[4] >> 3;
+ uint8 g1 = src_argb[5] >> 3;
+ uint8 r1 = src_argb[6] >> 3;
+ uint8 a1 = src_argb[7] >> 7;
+ *(uint32*)(dst_rgb) =
+ b0 | (g0 << 5) | (r0 << 10) | (a0 << 15) |
+ (b1 << 16) | (g1 << 21) | (r1 << 26) | (a1 << 31);
+ dst_rgb += 4;
+ src_argb += 8;
+ }
+ if (width & 1) {
+ uint8 b0 = src_argb[0] >> 3;
+ uint8 g0 = src_argb[1] >> 3;
+ uint8 r0 = src_argb[2] >> 3;
+ uint8 a0 = src_argb[3] >> 7;
+ *(uint16*)(dst_rgb) =
+ b0 | (g0 << 5) | (r0 << 10) | (a0 << 15);
+ }
+}
+
+void ARGBToARGB4444Row_C(const uint8* src_argb, uint8* dst_rgb, int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ uint8 b0 = src_argb[0] >> 4;
+ uint8 g0 = src_argb[1] >> 4;
+ uint8 r0 = src_argb[2] >> 4;
+ uint8 a0 = src_argb[3] >> 4;
+ uint8 b1 = src_argb[4] >> 4;
+ uint8 g1 = src_argb[5] >> 4;
+ uint8 r1 = src_argb[6] >> 4;
+ uint8 a1 = src_argb[7] >> 4;
+ *(uint32*)(dst_rgb) =
+ b0 | (g0 << 4) | (r0 << 8) | (a0 << 12) |
+ (b1 << 16) | (g1 << 20) | (r1 << 24) | (a1 << 28);
+ dst_rgb += 4;
+ src_argb += 8;
+ }
+ if (width & 1) {
+ uint8 b0 = src_argb[0] >> 4;
+ uint8 g0 = src_argb[1] >> 4;
+ uint8 r0 = src_argb[2] >> 4;
+ uint8 a0 = src_argb[3] >> 4;
+ *(uint16*)(dst_rgb) =
+ b0 | (g0 << 4) | (r0 << 8) | (a0 << 12);
+ }
+}
+
+static __inline int RGBToY(uint8 r, uint8 g, uint8 b) {
+ return (66 * r + 129 * g + 25 * b + 0x1080) >> 8;
+}
+
+static __inline int RGBToU(uint8 r, uint8 g, uint8 b) {
+ return (112 * b - 74 * g - 38 * r + 0x8080) >> 8;
+}
+static __inline int RGBToV(uint8 r, uint8 g, uint8 b) {
+ return (112 * r - 94 * g - 18 * b + 0x8080) >> 8;
+}
+
+#define MAKEROWY(NAME, R, G, B, BPP) \
+void NAME ## ToYRow_C(const uint8* src_argb0, uint8* dst_y, int width) { \
+ int x; \
+ for (x = 0; x < width; ++x) { \
+ dst_y[0] = RGBToY(src_argb0[R], src_argb0[G], src_argb0[B]); \
+ src_argb0 += BPP; \
+ dst_y += 1; \
+ } \
+} \
+void NAME ## ToUVRow_C(const uint8* src_rgb0, int src_stride_rgb, \
+ uint8* dst_u, uint8* dst_v, int width) { \
+ const uint8* src_rgb1 = src_rgb0 + src_stride_rgb; \
+ int x; \
+ for (x = 0; x < width - 1; x += 2) { \
+ uint8 ab = (src_rgb0[B] + src_rgb0[B + BPP] + \
+ src_rgb1[B] + src_rgb1[B + BPP]) >> 2; \
+ uint8 ag = (src_rgb0[G] + src_rgb0[G + BPP] + \
+ src_rgb1[G] + src_rgb1[G + BPP]) >> 2; \
+ uint8 ar = (src_rgb0[R] + src_rgb0[R + BPP] + \
+ src_rgb1[R] + src_rgb1[R + BPP]) >> 2; \
+ dst_u[0] = RGBToU(ar, ag, ab); \
+ dst_v[0] = RGBToV(ar, ag, ab); \
+ src_rgb0 += BPP * 2; \
+ src_rgb1 += BPP * 2; \
+ dst_u += 1; \
+ dst_v += 1; \
+ } \
+ if (width & 1) { \
+ uint8 ab = (src_rgb0[B] + src_rgb1[B]) >> 1; \
+ uint8 ag = (src_rgb0[G] + src_rgb1[G]) >> 1; \
+ uint8 ar = (src_rgb0[R] + src_rgb1[R]) >> 1; \
+ dst_u[0] = RGBToU(ar, ag, ab); \
+ dst_v[0] = RGBToV(ar, ag, ab); \
+ } \
+}
+
+MAKEROWY(ARGB, 2, 1, 0, 4)
+MAKEROWY(BGRA, 1, 2, 3, 4)
+MAKEROWY(ABGR, 0, 1, 2, 4)
+MAKEROWY(RGBA, 3, 2, 1, 4)
+MAKEROWY(RGB24, 2, 1, 0, 3)
+MAKEROWY(RAW, 0, 1, 2, 3)
+#undef MAKEROWY
+
+// JPeg uses a variation on BT.601-1 full range
+// y = 0.29900 * r + 0.58700 * g + 0.11400 * b
+// u = -0.16874 * r - 0.33126 * g + 0.50000 * b + center
+// v = 0.50000 * r - 0.41869 * g - 0.08131 * b + center
+// BT.601 Mpeg range uses:
+// b 0.1016 * 255 = 25.908 = 25
+// g 0.5078 * 255 = 129.489 = 129
+// r 0.2578 * 255 = 65.739 = 66
+// JPeg 8 bit Y (not used):
+// b 0.11400 * 256 = 29.184 = 29
+// g 0.58700 * 256 = 150.272 = 150
+// r 0.29900 * 256 = 76.544 = 77
+// JPeg 7 bit Y:
+// b 0.11400 * 128 = 14.592 = 15
+// g 0.58700 * 128 = 75.136 = 75
+// r 0.29900 * 128 = 38.272 = 38
+// JPeg 8 bit U:
+// b 0.50000 * 255 = 127.5 = 127
+// g -0.33126 * 255 = -84.4713 = -84
+// r -0.16874 * 255 = -43.0287 = -43
+// JPeg 8 bit V:
+// b -0.08131 * 255 = -20.73405 = -20
+// g -0.41869 * 255 = -106.76595 = -107
+// r 0.50000 * 255 = 127.5 = 127
+
+static __inline int RGBToYJ(uint8 r, uint8 g, uint8 b) {
+ return (38 * r + 75 * g + 15 * b + 64) >> 7;
+}
+
+static __inline int RGBToUJ(uint8 r, uint8 g, uint8 b) {
+ return (127 * b - 84 * g - 43 * r + 0x8080) >> 8;
+}
+static __inline int RGBToVJ(uint8 r, uint8 g, uint8 b) {
+ return (127 * r - 107 * g - 20 * b + 0x8080) >> 8;
+}
+
+#define AVGB(a, b) (((a) + (b) + 1) >> 1)
+
+#define MAKEROWYJ(NAME, R, G, B, BPP) \
+void NAME ## ToYJRow_C(const uint8* src_argb0, uint8* dst_y, int width) { \
+ int x; \
+ for (x = 0; x < width; ++x) { \
+ dst_y[0] = RGBToYJ(src_argb0[R], src_argb0[G], src_argb0[B]); \
+ src_argb0 += BPP; \
+ dst_y += 1; \
+ } \
+} \
+void NAME ## ToUVJRow_C(const uint8* src_rgb0, int src_stride_rgb, \
+ uint8* dst_u, uint8* dst_v, int width) { \
+ const uint8* src_rgb1 = src_rgb0 + src_stride_rgb; \
+ int x; \
+ for (x = 0; x < width - 1; x += 2) { \
+ uint8 ab = AVGB(AVGB(src_rgb0[B], src_rgb1[B]), \
+ AVGB(src_rgb0[B + BPP], src_rgb1[B + BPP])); \
+ uint8 ag = AVGB(AVGB(src_rgb0[G], src_rgb1[G]), \
+ AVGB(src_rgb0[G + BPP], src_rgb1[G + BPP])); \
+ uint8 ar = AVGB(AVGB(src_rgb0[R], src_rgb1[R]), \
+ AVGB(src_rgb0[R + BPP], src_rgb1[R + BPP])); \
+ dst_u[0] = RGBToUJ(ar, ag, ab); \
+ dst_v[0] = RGBToVJ(ar, ag, ab); \
+ src_rgb0 += BPP * 2; \
+ src_rgb1 += BPP * 2; \
+ dst_u += 1; \
+ dst_v += 1; \
+ } \
+ if (width & 1) { \
+ uint8 ab = AVGB(src_rgb0[B], src_rgb1[B]); \
+ uint8 ag = AVGB(src_rgb0[G], src_rgb1[G]); \
+ uint8 ar = AVGB(src_rgb0[R], src_rgb1[R]); \
+ dst_u[0] = RGBToUJ(ar, ag, ab); \
+ dst_v[0] = RGBToVJ(ar, ag, ab); \
+ } \
+}
+
+MAKEROWYJ(ARGB, 2, 1, 0, 4)
+#undef MAKEROWYJ
+
+void RGB565ToYRow_C(const uint8* src_rgb565, uint8* dst_y, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 b = src_rgb565[0] & 0x1f;
+ uint8 g = (src_rgb565[0] >> 5) | ((src_rgb565[1] & 0x07) << 3);
+ uint8 r = src_rgb565[1] >> 3;
+ b = (b << 3) | (b >> 2);
+ g = (g << 2) | (g >> 4);
+ r = (r << 3) | (r >> 2);
+ dst_y[0] = RGBToY(r, g, b);
+ src_rgb565 += 2;
+ dst_y += 1;
+ }
+}
+
+void ARGB1555ToYRow_C(const uint8* src_argb1555, uint8* dst_y, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 b = src_argb1555[0] & 0x1f;
+ uint8 g = (src_argb1555[0] >> 5) | ((src_argb1555[1] & 0x03) << 3);
+ uint8 r = (src_argb1555[1] & 0x7c) >> 2;
+ b = (b << 3) | (b >> 2);
+ g = (g << 3) | (g >> 2);
+ r = (r << 3) | (r >> 2);
+ dst_y[0] = RGBToY(r, g, b);
+ src_argb1555 += 2;
+ dst_y += 1;
+ }
+}
+
+void ARGB4444ToYRow_C(const uint8* src_argb4444, uint8* dst_y, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 b = src_argb4444[0] & 0x0f;
+ uint8 g = src_argb4444[0] >> 4;
+ uint8 r = src_argb4444[1] & 0x0f;
+ b = (b << 4) | b;
+ g = (g << 4) | g;
+ r = (r << 4) | r;
+ dst_y[0] = RGBToY(r, g, b);
+ src_argb4444 += 2;
+ dst_y += 1;
+ }
+}
+
+void RGB565ToUVRow_C(const uint8* src_rgb565, int src_stride_rgb565,
+ uint8* dst_u, uint8* dst_v, int width) {
+ const uint8* next_rgb565 = src_rgb565 + src_stride_rgb565;
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ uint8 b0 = src_rgb565[0] & 0x1f;
+ uint8 g0 = (src_rgb565[0] >> 5) | ((src_rgb565[1] & 0x07) << 3);
+ uint8 r0 = src_rgb565[1] >> 3;
+ uint8 b1 = src_rgb565[2] & 0x1f;
+ uint8 g1 = (src_rgb565[2] >> 5) | ((src_rgb565[3] & 0x07) << 3);
+ uint8 r1 = src_rgb565[3] >> 3;
+ uint8 b2 = next_rgb565[0] & 0x1f;
+ uint8 g2 = (next_rgb565[0] >> 5) | ((next_rgb565[1] & 0x07) << 3);
+ uint8 r2 = next_rgb565[1] >> 3;
+ uint8 b3 = next_rgb565[2] & 0x1f;
+ uint8 g3 = (next_rgb565[2] >> 5) | ((next_rgb565[3] & 0x07) << 3);
+ uint8 r3 = next_rgb565[3] >> 3;
+ uint8 b = (b0 + b1 + b2 + b3); // 565 * 4 = 787.
+ uint8 g = (g0 + g1 + g2 + g3);
+ uint8 r = (r0 + r1 + r2 + r3);
+ b = (b << 1) | (b >> 6); // 787 -> 888.
+ r = (r << 1) | (r >> 6);
+ dst_u[0] = RGBToU(r, g, b);
+ dst_v[0] = RGBToV(r, g, b);
+ src_rgb565 += 4;
+ next_rgb565 += 4;
+ dst_u += 1;
+ dst_v += 1;
+ }
+ if (width & 1) {
+ uint8 b0 = src_rgb565[0] & 0x1f;
+ uint8 g0 = (src_rgb565[0] >> 5) | ((src_rgb565[1] & 0x07) << 3);
+ uint8 r0 = src_rgb565[1] >> 3;
+ uint8 b2 = next_rgb565[0] & 0x1f;
+ uint8 g2 = (next_rgb565[0] >> 5) | ((next_rgb565[1] & 0x07) << 3);
+ uint8 r2 = next_rgb565[1] >> 3;
+ uint8 b = (b0 + b2); // 565 * 2 = 676.
+ uint8 g = (g0 + g2);
+ uint8 r = (r0 + r2);
+ b = (b << 2) | (b >> 4); // 676 -> 888
+ g = (g << 1) | (g >> 6);
+ r = (r << 2) | (r >> 4);
+ dst_u[0] = RGBToU(r, g, b);
+ dst_v[0] = RGBToV(r, g, b);
+ }
+}
+
+void ARGB1555ToUVRow_C(const uint8* src_argb1555, int src_stride_argb1555,
+ uint8* dst_u, uint8* dst_v, int width) {
+ const uint8* next_argb1555 = src_argb1555 + src_stride_argb1555;
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ uint8 b0 = src_argb1555[0] & 0x1f;
+ uint8 g0 = (src_argb1555[0] >> 5) | ((src_argb1555[1] & 0x03) << 3);
+ uint8 r0 = (src_argb1555[1] & 0x7c) >> 2;
+ uint8 b1 = src_argb1555[2] & 0x1f;
+ uint8 g1 = (src_argb1555[2] >> 5) | ((src_argb1555[3] & 0x03) << 3);
+ uint8 r1 = (src_argb1555[3] & 0x7c) >> 2;
+ uint8 b2 = next_argb1555[0] & 0x1f;
+ uint8 g2 = (next_argb1555[0] >> 5) | ((next_argb1555[1] & 0x03) << 3);
+ uint8 r2 = (next_argb1555[1] & 0x7c) >> 2;
+ uint8 b3 = next_argb1555[2] & 0x1f;
+ uint8 g3 = (next_argb1555[2] >> 5) | ((next_argb1555[3] & 0x03) << 3);
+ uint8 r3 = (next_argb1555[3] & 0x7c) >> 2;
+ uint8 b = (b0 + b1 + b2 + b3); // 555 * 4 = 777.
+ uint8 g = (g0 + g1 + g2 + g3);
+ uint8 r = (r0 + r1 + r2 + r3);
+ b = (b << 1) | (b >> 6); // 777 -> 888.
+ g = (g << 1) | (g >> 6);
+ r = (r << 1) | (r >> 6);
+ dst_u[0] = RGBToU(r, g, b);
+ dst_v[0] = RGBToV(r, g, b);
+ src_argb1555 += 4;
+ next_argb1555 += 4;
+ dst_u += 1;
+ dst_v += 1;
+ }
+ if (width & 1) {
+ uint8 b0 = src_argb1555[0] & 0x1f;
+ uint8 g0 = (src_argb1555[0] >> 5) | ((src_argb1555[1] & 0x03) << 3);
+ uint8 r0 = (src_argb1555[1] & 0x7c) >> 2;
+ uint8 b2 = next_argb1555[0] & 0x1f;
+ uint8 g2 = (next_argb1555[0] >> 5) | ((next_argb1555[1] & 0x03) << 3);
+ uint8 r2 = next_argb1555[1] >> 3;
+ uint8 b = (b0 + b2); // 555 * 2 = 666.
+ uint8 g = (g0 + g2);
+ uint8 r = (r0 + r2);
+ b = (b << 2) | (b >> 4); // 666 -> 888.
+ g = (g << 2) | (g >> 4);
+ r = (r << 2) | (r >> 4);
+ dst_u[0] = RGBToU(r, g, b);
+ dst_v[0] = RGBToV(r, g, b);
+ }
+}
+
+void ARGB4444ToUVRow_C(const uint8* src_argb4444, int src_stride_argb4444,
+ uint8* dst_u, uint8* dst_v, int width) {
+ const uint8* next_argb4444 = src_argb4444 + src_stride_argb4444;
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ uint8 b0 = src_argb4444[0] & 0x0f;
+ uint8 g0 = src_argb4444[0] >> 4;
+ uint8 r0 = src_argb4444[1] & 0x0f;
+ uint8 b1 = src_argb4444[2] & 0x0f;
+ uint8 g1 = src_argb4444[2] >> 4;
+ uint8 r1 = src_argb4444[3] & 0x0f;
+ uint8 b2 = next_argb4444[0] & 0x0f;
+ uint8 g2 = next_argb4444[0] >> 4;
+ uint8 r2 = next_argb4444[1] & 0x0f;
+ uint8 b3 = next_argb4444[2] & 0x0f;
+ uint8 g3 = next_argb4444[2] >> 4;
+ uint8 r3 = next_argb4444[3] & 0x0f;
+ uint8 b = (b0 + b1 + b2 + b3); // 444 * 4 = 666.
+ uint8 g = (g0 + g1 + g2 + g3);
+ uint8 r = (r0 + r1 + r2 + r3);
+ b = (b << 2) | (b >> 4); // 666 -> 888.
+ g = (g << 2) | (g >> 4);
+ r = (r << 2) | (r >> 4);
+ dst_u[0] = RGBToU(r, g, b);
+ dst_v[0] = RGBToV(r, g, b);
+ src_argb4444 += 4;
+ next_argb4444 += 4;
+ dst_u += 1;
+ dst_v += 1;
+ }
+ if (width & 1) {
+ uint8 b0 = src_argb4444[0] & 0x0f;
+ uint8 g0 = src_argb4444[0] >> 4;
+ uint8 r0 = src_argb4444[1] & 0x0f;
+ uint8 b2 = next_argb4444[0] & 0x0f;
+ uint8 g2 = next_argb4444[0] >> 4;
+ uint8 r2 = next_argb4444[1] & 0x0f;
+ uint8 b = (b0 + b2); // 444 * 2 = 555.
+ uint8 g = (g0 + g2);
+ uint8 r = (r0 + r2);
+ b = (b << 3) | (b >> 2); // 555 -> 888.
+ g = (g << 3) | (g >> 2);
+ r = (r << 3) | (r >> 2);
+ dst_u[0] = RGBToU(r, g, b);
+ dst_v[0] = RGBToV(r, g, b);
+ }
+}
+
+void ARGBToUV444Row_C(const uint8* src_argb,
+ uint8* dst_u, uint8* dst_v, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 ab = src_argb[0];
+ uint8 ag = src_argb[1];
+ uint8 ar = src_argb[2];
+ dst_u[0] = RGBToU(ar, ag, ab);
+ dst_v[0] = RGBToV(ar, ag, ab);
+ src_argb += 4;
+ dst_u += 1;
+ dst_v += 1;
+ }
+}
+
+void ARGBToUV422Row_C(const uint8* src_argb,
+ uint8* dst_u, uint8* dst_v, int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ uint8 ab = (src_argb[0] + src_argb[4]) >> 1;
+ uint8 ag = (src_argb[1] + src_argb[5]) >> 1;
+ uint8 ar = (src_argb[2] + src_argb[6]) >> 1;
+ dst_u[0] = RGBToU(ar, ag, ab);
+ dst_v[0] = RGBToV(ar, ag, ab);
+ src_argb += 8;
+ dst_u += 1;
+ dst_v += 1;
+ }
+ if (width & 1) {
+ uint8 ab = src_argb[0];
+ uint8 ag = src_argb[1];
+ uint8 ar = src_argb[2];
+ dst_u[0] = RGBToU(ar, ag, ab);
+ dst_v[0] = RGBToV(ar, ag, ab);
+ }
+}
+
+void ARGBToUV411Row_C(const uint8* src_argb,
+ uint8* dst_u, uint8* dst_v, int width) {
+ int x;
+ for (x = 0; x < width - 3; x += 4) {
+ uint8 ab = (src_argb[0] + src_argb[4] + src_argb[8] + src_argb[12]) >> 2;
+ uint8 ag = (src_argb[1] + src_argb[5] + src_argb[9] + src_argb[13]) >> 2;
+ uint8 ar = (src_argb[2] + src_argb[6] + src_argb[10] + src_argb[14]) >> 2;
+ dst_u[0] = RGBToU(ar, ag, ab);
+ dst_v[0] = RGBToV(ar, ag, ab);
+ src_argb += 16;
+ dst_u += 1;
+ dst_v += 1;
+ }
+ if ((width & 3) == 3) {
+ uint8 ab = (src_argb[0] + src_argb[4] + src_argb[8]) / 3;
+ uint8 ag = (src_argb[1] + src_argb[5] + src_argb[9]) / 3;
+ uint8 ar = (src_argb[2] + src_argb[6] + src_argb[10]) / 3;
+ dst_u[0] = RGBToU(ar, ag, ab);
+ dst_v[0] = RGBToV(ar, ag, ab);
+ } else if ((width & 3) == 2) {
+ uint8 ab = (src_argb[0] + src_argb[4]) >> 1;
+ uint8 ag = (src_argb[1] + src_argb[5]) >> 1;
+ uint8 ar = (src_argb[2] + src_argb[6]) >> 1;
+ dst_u[0] = RGBToU(ar, ag, ab);
+ dst_v[0] = RGBToV(ar, ag, ab);
+ } else if ((width & 3) == 1) {
+ uint8 ab = src_argb[0];
+ uint8 ag = src_argb[1];
+ uint8 ar = src_argb[2];
+ dst_u[0] = RGBToU(ar, ag, ab);
+ dst_v[0] = RGBToV(ar, ag, ab);
+ }
+}
+
+void ARGBGrayRow_C(const uint8* src_argb, uint8* dst_argb, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 y = RGBToYJ(src_argb[2], src_argb[1], src_argb[0]);
+ dst_argb[2] = dst_argb[1] = dst_argb[0] = y;
+ dst_argb[3] = src_argb[3];
+ dst_argb += 4;
+ src_argb += 4;
+ }
+}
+
+// Convert a row of image to Sepia tone.
+void ARGBSepiaRow_C(uint8* dst_argb, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ int b = dst_argb[0];
+ int g = dst_argb[1];
+ int r = dst_argb[2];
+ int sb = (b * 17 + g * 68 + r * 35) >> 7;
+ int sg = (b * 22 + g * 88 + r * 45) >> 7;
+ int sr = (b * 24 + g * 98 + r * 50) >> 7;
+ // b does not over flow. a is preserved from original.
+ dst_argb[0] = sb;
+ dst_argb[1] = clamp255(sg);
+ dst_argb[2] = clamp255(sr);
+ dst_argb += 4;
+ }
+}
+
+// Apply color matrix to a row of image. Matrix is signed.
+// TODO(fbarchard): Consider adding rounding (+32).
+void ARGBColorMatrixRow_C(const uint8* src_argb, uint8* dst_argb,
+ const int8* matrix_argb, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ int b = src_argb[0];
+ int g = src_argb[1];
+ int r = src_argb[2];
+ int a = src_argb[3];
+ int sb = (b * matrix_argb[0] + g * matrix_argb[1] +
+ r * matrix_argb[2] + a * matrix_argb[3]) >> 6;
+ int sg = (b * matrix_argb[4] + g * matrix_argb[5] +
+ r * matrix_argb[6] + a * matrix_argb[7]) >> 6;
+ int sr = (b * matrix_argb[8] + g * matrix_argb[9] +
+ r * matrix_argb[10] + a * matrix_argb[11]) >> 6;
+ int sa = (b * matrix_argb[12] + g * matrix_argb[13] +
+ r * matrix_argb[14] + a * matrix_argb[15]) >> 6;
+ dst_argb[0] = Clamp(sb);
+ dst_argb[1] = Clamp(sg);
+ dst_argb[2] = Clamp(sr);
+ dst_argb[3] = Clamp(sa);
+ src_argb += 4;
+ dst_argb += 4;
+ }
+}
+
+// Apply color table to a row of image.
+void ARGBColorTableRow_C(uint8* dst_argb, const uint8* table_argb, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ int b = dst_argb[0];
+ int g = dst_argb[1];
+ int r = dst_argb[2];
+ int a = dst_argb[3];
+ dst_argb[0] = table_argb[b * 4 + 0];
+ dst_argb[1] = table_argb[g * 4 + 1];
+ dst_argb[2] = table_argb[r * 4 + 2];
+ dst_argb[3] = table_argb[a * 4 + 3];
+ dst_argb += 4;
+ }
+}
+
+// Apply color table to a row of image.
+void RGBColorTableRow_C(uint8* dst_argb, const uint8* table_argb, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ int b = dst_argb[0];
+ int g = dst_argb[1];
+ int r = dst_argb[2];
+ dst_argb[0] = table_argb[b * 4 + 0];
+ dst_argb[1] = table_argb[g * 4 + 1];
+ dst_argb[2] = table_argb[r * 4 + 2];
+ dst_argb += 4;
+ }
+}
+
+void ARGBQuantizeRow_C(uint8* dst_argb, int scale, int interval_size,
+ int interval_offset, int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ int b = dst_argb[0];
+ int g = dst_argb[1];
+ int r = dst_argb[2];
+ dst_argb[0] = (b * scale >> 16) * interval_size + interval_offset;
+ dst_argb[1] = (g * scale >> 16) * interval_size + interval_offset;
+ dst_argb[2] = (r * scale >> 16) * interval_size + interval_offset;
+ dst_argb += 4;
+ }
+}
+
+#define REPEAT8(v) (v) | ((v) << 8)
+#define SHADE(f, v) v * f >> 24
+
+void ARGBShadeRow_C(const uint8* src_argb, uint8* dst_argb, int width,
+ uint32 value) {
+ const uint32 b_scale = REPEAT8(value & 0xff);
+ const uint32 g_scale = REPEAT8((value >> 8) & 0xff);
+ const uint32 r_scale = REPEAT8((value >> 16) & 0xff);
+ const uint32 a_scale = REPEAT8(value >> 24);
+
+ int i;
+ for (i = 0; i < width; ++i) {
+ const uint32 b = REPEAT8(src_argb[0]);
+ const uint32 g = REPEAT8(src_argb[1]);
+ const uint32 r = REPEAT8(src_argb[2]);
+ const uint32 a = REPEAT8(src_argb[3]);
+ dst_argb[0] = SHADE(b, b_scale);
+ dst_argb[1] = SHADE(g, g_scale);
+ dst_argb[2] = SHADE(r, r_scale);
+ dst_argb[3] = SHADE(a, a_scale);
+ src_argb += 4;
+ dst_argb += 4;
+ }
+}
+#undef REPEAT8
+#undef SHADE
+
+#define REPEAT8(v) (v) | ((v) << 8)
+#define SHADE(f, v) v * f >> 16
+
+void ARGBMultiplyRow_C(const uint8* src_argb0, const uint8* src_argb1,
+ uint8* dst_argb, int width) {
+ int i;
+ for (i = 0; i < width; ++i) {
+ const uint32 b = REPEAT8(src_argb0[0]);
+ const uint32 g = REPEAT8(src_argb0[1]);
+ const uint32 r = REPEAT8(src_argb0[2]);
+ const uint32 a = REPEAT8(src_argb0[3]);
+ const uint32 b_scale = src_argb1[0];
+ const uint32 g_scale = src_argb1[1];
+ const uint32 r_scale = src_argb1[2];
+ const uint32 a_scale = src_argb1[3];
+ dst_argb[0] = SHADE(b, b_scale);
+ dst_argb[1] = SHADE(g, g_scale);
+ dst_argb[2] = SHADE(r, r_scale);
+ dst_argb[3] = SHADE(a, a_scale);
+ src_argb0 += 4;
+ src_argb1 += 4;
+ dst_argb += 4;
+ }
+}
+#undef REPEAT8
+#undef SHADE
+
+#define SHADE(f, v) clamp255(v + f)
+
+void ARGBAddRow_C(const uint8* src_argb0, const uint8* src_argb1,
+ uint8* dst_argb, int width) {
+ int i;
+ for (i = 0; i < width; ++i) {
+ const int b = src_argb0[0];
+ const int g = src_argb0[1];
+ const int r = src_argb0[2];
+ const int a = src_argb0[3];
+ const int b_add = src_argb1[0];
+ const int g_add = src_argb1[1];
+ const int r_add = src_argb1[2];
+ const int a_add = src_argb1[3];
+ dst_argb[0] = SHADE(b, b_add);
+ dst_argb[1] = SHADE(g, g_add);
+ dst_argb[2] = SHADE(r, r_add);
+ dst_argb[3] = SHADE(a, a_add);
+ src_argb0 += 4;
+ src_argb1 += 4;
+ dst_argb += 4;
+ }
+}
+#undef SHADE
+
+#define SHADE(f, v) clamp0(f - v)
+
+void ARGBSubtractRow_C(const uint8* src_argb0, const uint8* src_argb1,
+ uint8* dst_argb, int width) {
+ int i;
+ for (i = 0; i < width; ++i) {
+ const int b = src_argb0[0];
+ const int g = src_argb0[1];
+ const int r = src_argb0[2];
+ const int a = src_argb0[3];
+ const int b_sub = src_argb1[0];
+ const int g_sub = src_argb1[1];
+ const int r_sub = src_argb1[2];
+ const int a_sub = src_argb1[3];
+ dst_argb[0] = SHADE(b, b_sub);
+ dst_argb[1] = SHADE(g, g_sub);
+ dst_argb[2] = SHADE(r, r_sub);
+ dst_argb[3] = SHADE(a, a_sub);
+ src_argb0 += 4;
+ src_argb1 += 4;
+ dst_argb += 4;
+ }
+}
+#undef SHADE
+
+// Sobel functions which mimics SSSE3.
+void SobelXRow_C(const uint8* src_y0, const uint8* src_y1, const uint8* src_y2,
+ uint8* dst_sobelx, int width) {
+ int i;
+ for (i = 0; i < width; ++i) {
+ int a = src_y0[i];
+ int b = src_y1[i];
+ int c = src_y2[i];
+ int a_sub = src_y0[i + 2];
+ int b_sub = src_y1[i + 2];
+ int c_sub = src_y2[i + 2];
+ int a_diff = a - a_sub;
+ int b_diff = b - b_sub;
+ int c_diff = c - c_sub;
+ int sobel = Abs(a_diff + b_diff * 2 + c_diff);
+ dst_sobelx[i] = (uint8)(clamp255(sobel));
+ }
+}
+
+void SobelYRow_C(const uint8* src_y0, const uint8* src_y1,
+ uint8* dst_sobely, int width) {
+ int i;
+ for (i = 0; i < width; ++i) {
+ int a = src_y0[i + 0];
+ int b = src_y0[i + 1];
+ int c = src_y0[i + 2];
+ int a_sub = src_y1[i + 0];
+ int b_sub = src_y1[i + 1];
+ int c_sub = src_y1[i + 2];
+ int a_diff = a - a_sub;
+ int b_diff = b - b_sub;
+ int c_diff = c - c_sub;
+ int sobel = Abs(a_diff + b_diff * 2 + c_diff);
+ dst_sobely[i] = (uint8)(clamp255(sobel));
+ }
+}
+
+void SobelRow_C(const uint8* src_sobelx, const uint8* src_sobely,
+ uint8* dst_argb, int width) {
+ int i;
+ for (i = 0; i < width; ++i) {
+ int r = src_sobelx[i];
+ int b = src_sobely[i];
+ int s = clamp255(r + b);
+ dst_argb[0] = (uint8)(s);
+ dst_argb[1] = (uint8)(s);
+ dst_argb[2] = (uint8)(s);
+ dst_argb[3] = (uint8)(255u);
+ dst_argb += 4;
+ }
+}
+
+void SobelToPlaneRow_C(const uint8* src_sobelx, const uint8* src_sobely,
+ uint8* dst_y, int width) {
+ int i;
+ for (i = 0; i < width; ++i) {
+ int r = src_sobelx[i];
+ int b = src_sobely[i];
+ int s = clamp255(r + b);
+ dst_y[i] = (uint8)(s);
+ }
+}
+
+void SobelXYRow_C(const uint8* src_sobelx, const uint8* src_sobely,
+ uint8* dst_argb, int width) {
+ int i;
+ for (i = 0; i < width; ++i) {
+ int r = src_sobelx[i];
+ int b = src_sobely[i];
+ int g = clamp255(r + b);
+ dst_argb[0] = (uint8)(b);
+ dst_argb[1] = (uint8)(g);
+ dst_argb[2] = (uint8)(r);
+ dst_argb[3] = (uint8)(255u);
+ dst_argb += 4;
+ }
+}
+
+void I400ToARGBRow_C(const uint8* src_y, uint8* dst_argb, int width) {
+ // Copy a Y to RGB.
+ int x;
+ for (x = 0; x < width; ++x) {
+ uint8 y = src_y[0];
+ dst_argb[2] = dst_argb[1] = dst_argb[0] = y;
+ dst_argb[3] = 255u;
+ dst_argb += 4;
+ ++src_y;
+ }
+}
+
+// C reference code that mimics the YUV assembly.
+
+#define YG 74 /* (int8)(1.164 * 64 + 0.5) */
+
+#define UB 127 /* min(63,(int8)(2.018 * 64)) */
+#define UG -25 /* (int8)(-0.391 * 64 - 0.5) */
+#define UR 0
+
+#define VB 0
+#define VG -52 /* (int8)(-0.813 * 64 - 0.5) */
+#define VR 102 /* (int8)(1.596 * 64 + 0.5) */
+
+// Bias
+#define BB UB * 128 + VB * 128
+#define BG UG * 128 + VG * 128
+#define BR UR * 128 + VR * 128
+
+static __inline void YuvPixel(uint8 y, uint8 u, uint8 v,
+ uint8* b, uint8* g, uint8* r) {
+ int32 y1 = ((int32)(y) - 16) * YG;
+ *b = Clamp((int32)((u * UB + v * VB) - (BB) + y1) >> 6);
+ *g = Clamp((int32)((u * UG + v * VG) - (BG) + y1) >> 6);
+ *r = Clamp((int32)((u * UR + v * VR) - (BR) + y1) >> 6);
+}
+
+#if !defined(LIBYUV_DISABLE_NEON) && \
+ (defined(__ARM_NEON__) || defined(LIBYUV_NEON))
+// C mimic assembly.
+// TODO(fbarchard): Remove subsampling from Neon.
+void I444ToARGBRow_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ uint8 u = (src_u[0] + src_u[1] + 1) >> 1;
+ uint8 v = (src_v[0] + src_v[1] + 1) >> 1;
+ YuvPixel(src_y[0], u, v, rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ YuvPixel(src_y[1], u, v, rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
+ rgb_buf[7] = 255;
+ src_y += 2;
+ src_u += 2;
+ src_v += 2;
+ rgb_buf += 8; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ }
+}
+#else
+void I444ToARGBRow_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width; ++x) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ src_y += 1;
+ src_u += 1;
+ src_v += 1;
+ rgb_buf += 4; // Advance 1 pixel.
+ }
+}
+#endif
+// Also used for 420
+void I422ToARGBRow_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ YuvPixel(src_y[1], src_u[0], src_v[0],
+ rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
+ rgb_buf[7] = 255;
+ src_y += 2;
+ src_u += 1;
+ src_v += 1;
+ rgb_buf += 8; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ }
+}
+
+void I422ToRGB24Row_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ YuvPixel(src_y[1], src_u[0], src_v[0],
+ rgb_buf + 3, rgb_buf + 4, rgb_buf + 5);
+ src_y += 2;
+ src_u += 1;
+ src_v += 1;
+ rgb_buf += 6; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ }
+}
+
+void I422ToRAWRow_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 2, rgb_buf + 1, rgb_buf + 0);
+ YuvPixel(src_y[1], src_u[0], src_v[0],
+ rgb_buf + 5, rgb_buf + 4, rgb_buf + 3);
+ src_y += 2;
+ src_u += 1;
+ src_v += 1;
+ rgb_buf += 6; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 2, rgb_buf + 1, rgb_buf + 0);
+ }
+}
+
+void I422ToARGB4444Row_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* dst_argb4444,
+ int width) {
+ uint8 b0;
+ uint8 g0;
+ uint8 r0;
+ uint8 b1;
+ uint8 g1;
+ uint8 r1;
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], src_u[0], src_v[0], &b0, &g0, &r0);
+ YuvPixel(src_y[1], src_u[0], src_v[0], &b1, &g1, &r1);
+ b0 = b0 >> 4;
+ g0 = g0 >> 4;
+ r0 = r0 >> 4;
+ b1 = b1 >> 4;
+ g1 = g1 >> 4;
+ r1 = r1 >> 4;
+ *(uint32*)(dst_argb4444) = b0 | (g0 << 4) | (r0 << 8) |
+ (b1 << 16) | (g1 << 20) | (r1 << 24) | 0xf000f000;
+ src_y += 2;
+ src_u += 1;
+ src_v += 1;
+ dst_argb4444 += 4; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], src_u[0], src_v[0], &b0, &g0, &r0);
+ b0 = b0 >> 4;
+ g0 = g0 >> 4;
+ r0 = r0 >> 4;
+ *(uint16*)(dst_argb4444) = b0 | (g0 << 4) | (r0 << 8) |
+ 0xf000;
+ }
+}
+
+void I422ToARGB1555Row_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* dst_argb1555,
+ int width) {
+ uint8 b0;
+ uint8 g0;
+ uint8 r0;
+ uint8 b1;
+ uint8 g1;
+ uint8 r1;
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], src_u[0], src_v[0], &b0, &g0, &r0);
+ YuvPixel(src_y[1], src_u[0], src_v[0], &b1, &g1, &r1);
+ b0 = b0 >> 3;
+ g0 = g0 >> 3;
+ r0 = r0 >> 3;
+ b1 = b1 >> 3;
+ g1 = g1 >> 3;
+ r1 = r1 >> 3;
+ *(uint32*)(dst_argb1555) = b0 | (g0 << 5) | (r0 << 10) |
+ (b1 << 16) | (g1 << 21) | (r1 << 26) | 0x80008000;
+ src_y += 2;
+ src_u += 1;
+ src_v += 1;
+ dst_argb1555 += 4; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], src_u[0], src_v[0], &b0, &g0, &r0);
+ b0 = b0 >> 3;
+ g0 = g0 >> 3;
+ r0 = r0 >> 3;
+ *(uint16*)(dst_argb1555) = b0 | (g0 << 5) | (r0 << 10) |
+ 0x8000;
+ }
+}
+
+void I422ToRGB565Row_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* dst_rgb565,
+ int width) {
+ uint8 b0;
+ uint8 g0;
+ uint8 r0;
+ uint8 b1;
+ uint8 g1;
+ uint8 r1;
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], src_u[0], src_v[0], &b0, &g0, &r0);
+ YuvPixel(src_y[1], src_u[0], src_v[0], &b1, &g1, &r1);
+ b0 = b0 >> 3;
+ g0 = g0 >> 2;
+ r0 = r0 >> 3;
+ b1 = b1 >> 3;
+ g1 = g1 >> 2;
+ r1 = r1 >> 3;
+ *(uint32*)(dst_rgb565) = b0 | (g0 << 5) | (r0 << 11) |
+ (b1 << 16) | (g1 << 21) | (r1 << 27);
+ src_y += 2;
+ src_u += 1;
+ src_v += 1;
+ dst_rgb565 += 4; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], src_u[0], src_v[0], &b0, &g0, &r0);
+ b0 = b0 >> 3;
+ g0 = g0 >> 2;
+ r0 = r0 >> 3;
+ *(uint16*)(dst_rgb565) = b0 | (g0 << 5) | (r0 << 11);
+ }
+}
+
+void I411ToARGBRow_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width - 3; x += 4) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ YuvPixel(src_y[1], src_u[0], src_v[0],
+ rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
+ rgb_buf[7] = 255;
+ YuvPixel(src_y[2], src_u[0], src_v[0],
+ rgb_buf + 8, rgb_buf + 9, rgb_buf + 10);
+ rgb_buf[11] = 255;
+ YuvPixel(src_y[3], src_u[0], src_v[0],
+ rgb_buf + 12, rgb_buf + 13, rgb_buf + 14);
+ rgb_buf[15] = 255;
+ src_y += 4;
+ src_u += 1;
+ src_v += 1;
+ rgb_buf += 16; // Advance 4 pixels.
+ }
+ if (width & 2) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ YuvPixel(src_y[1], src_u[0], src_v[0],
+ rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
+ rgb_buf[7] = 255;
+ src_y += 2;
+ rgb_buf += 8; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ }
+}
+
+void NV12ToARGBRow_C(const uint8* src_y,
+ const uint8* usrc_v,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], usrc_v[0], usrc_v[1],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ YuvPixel(src_y[1], usrc_v[0], usrc_v[1],
+ rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
+ rgb_buf[7] = 255;
+ src_y += 2;
+ usrc_v += 2;
+ rgb_buf += 8; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], usrc_v[0], usrc_v[1],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ }
+}
+
+void NV21ToARGBRow_C(const uint8* src_y,
+ const uint8* src_vu,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], src_vu[1], src_vu[0],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+
+ YuvPixel(src_y[1], src_vu[1], src_vu[0],
+ rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
+ rgb_buf[7] = 255;
+
+ src_y += 2;
+ src_vu += 2;
+ rgb_buf += 8; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], src_vu[1], src_vu[0],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ }
+}
+
+void NV12ToRGB565Row_C(const uint8* src_y,
+ const uint8* usrc_v,
+ uint8* dst_rgb565,
+ int width) {
+ uint8 b0;
+ uint8 g0;
+ uint8 r0;
+ uint8 b1;
+ uint8 g1;
+ uint8 r1;
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], usrc_v[0], usrc_v[1], &b0, &g0, &r0);
+ YuvPixel(src_y[1], usrc_v[0], usrc_v[1], &b1, &g1, &r1);
+ b0 = b0 >> 3;
+ g0 = g0 >> 2;
+ r0 = r0 >> 3;
+ b1 = b1 >> 3;
+ g1 = g1 >> 2;
+ r1 = r1 >> 3;
+ *(uint32*)(dst_rgb565) = b0 | (g0 << 5) | (r0 << 11) |
+ (b1 << 16) | (g1 << 21) | (r1 << 27);
+ src_y += 2;
+ usrc_v += 2;
+ dst_rgb565 += 4; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], usrc_v[0], usrc_v[1], &b0, &g0, &r0);
+ b0 = b0 >> 3;
+ g0 = g0 >> 2;
+ r0 = r0 >> 3;
+ *(uint16*)(dst_rgb565) = b0 | (g0 << 5) | (r0 << 11);
+ }
+}
+
+void NV21ToRGB565Row_C(const uint8* src_y,
+ const uint8* vsrc_u,
+ uint8* dst_rgb565,
+ int width) {
+ uint8 b0;
+ uint8 g0;
+ uint8 r0;
+ uint8 b1;
+ uint8 g1;
+ uint8 r1;
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], vsrc_u[1], vsrc_u[0], &b0, &g0, &r0);
+ YuvPixel(src_y[1], vsrc_u[1], vsrc_u[0], &b1, &g1, &r1);
+ b0 = b0 >> 3;
+ g0 = g0 >> 2;
+ r0 = r0 >> 3;
+ b1 = b1 >> 3;
+ g1 = g1 >> 2;
+ r1 = r1 >> 3;
+ *(uint32*)(dst_rgb565) = b0 | (g0 << 5) | (r0 << 11) |
+ (b1 << 16) | (g1 << 21) | (r1 << 27);
+ src_y += 2;
+ vsrc_u += 2;
+ dst_rgb565 += 4; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], vsrc_u[1], vsrc_u[0], &b0, &g0, &r0);
+ b0 = b0 >> 3;
+ g0 = g0 >> 2;
+ r0 = r0 >> 3;
+ *(uint16*)(dst_rgb565) = b0 | (g0 << 5) | (r0 << 11);
+ }
+}
+
+void YUY2ToARGBRow_C(const uint8* src_yuy2,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_yuy2[0], src_yuy2[1], src_yuy2[3],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ YuvPixel(src_yuy2[2], src_yuy2[1], src_yuy2[3],
+ rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
+ rgb_buf[7] = 255;
+ src_yuy2 += 4;
+ rgb_buf += 8; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_yuy2[0], src_yuy2[1], src_yuy2[3],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ }
+}
+
+void UYVYToARGBRow_C(const uint8* src_uyvy,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_uyvy[1], src_uyvy[0], src_uyvy[2],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ YuvPixel(src_uyvy[3], src_uyvy[0], src_uyvy[2],
+ rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
+ rgb_buf[7] = 255;
+ src_uyvy += 4;
+ rgb_buf += 8; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_uyvy[1], src_uyvy[0], src_uyvy[2],
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ }
+}
+
+void I422ToBGRARow_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 3, rgb_buf + 2, rgb_buf + 1);
+ rgb_buf[0] = 255;
+ YuvPixel(src_y[1], src_u[0], src_v[0],
+ rgb_buf + 7, rgb_buf + 6, rgb_buf + 5);
+ rgb_buf[4] = 255;
+ src_y += 2;
+ src_u += 1;
+ src_v += 1;
+ rgb_buf += 8; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 3, rgb_buf + 2, rgb_buf + 1);
+ rgb_buf[0] = 255;
+ }
+}
+
+void I422ToABGRRow_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 2, rgb_buf + 1, rgb_buf + 0);
+ rgb_buf[3] = 255;
+ YuvPixel(src_y[1], src_u[0], src_v[0],
+ rgb_buf + 6, rgb_buf + 5, rgb_buf + 4);
+ rgb_buf[7] = 255;
+ src_y += 2;
+ src_u += 1;
+ src_v += 1;
+ rgb_buf += 8; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 2, rgb_buf + 1, rgb_buf + 0);
+ rgb_buf[3] = 255;
+ }
+}
+
+void I422ToRGBARow_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* rgb_buf,
+ int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 1, rgb_buf + 2, rgb_buf + 3);
+ rgb_buf[0] = 255;
+ YuvPixel(src_y[1], src_u[0], src_v[0],
+ rgb_buf + 5, rgb_buf + 6, rgb_buf + 7);
+ rgb_buf[4] = 255;
+ src_y += 2;
+ src_u += 1;
+ src_v += 1;
+ rgb_buf += 8; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], src_u[0], src_v[0],
+ rgb_buf + 1, rgb_buf + 2, rgb_buf + 3);
+ rgb_buf[0] = 255;
+ }
+}
+
+void YToARGBRow_C(const uint8* src_y, uint8* rgb_buf, int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ YuvPixel(src_y[0], 128, 128,
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ YuvPixel(src_y[1], 128, 128,
+ rgb_buf + 4, rgb_buf + 5, rgb_buf + 6);
+ rgb_buf[7] = 255;
+ src_y += 2;
+ rgb_buf += 8; // Advance 2 pixels.
+ }
+ if (width & 1) {
+ YuvPixel(src_y[0], 128, 128,
+ rgb_buf + 0, rgb_buf + 1, rgb_buf + 2);
+ rgb_buf[3] = 255;
+ }
+}
+
+void MirrorRow_C(const uint8* src, uint8* dst, int width) {
+ int x;
+ src += width - 1;
+ for (x = 0; x < width - 1; x += 2) {
+ dst[x] = src[0];
+ dst[x + 1] = src[-1];
+ src -= 2;
+ }
+ if (width & 1) {
+ dst[width - 1] = src[0];
+ }
+}
+
+void MirrorUVRow_C(const uint8* src_uv, uint8* dst_u, uint8* dst_v, int width) {
+ int x;
+ src_uv += (width - 1) << 1;
+ for (x = 0; x < width - 1; x += 2) {
+ dst_u[x] = src_uv[0];
+ dst_u[x + 1] = src_uv[-2];
+ dst_v[x] = src_uv[1];
+ dst_v[x + 1] = src_uv[-2 + 1];
+ src_uv -= 4;
+ }
+ if (width & 1) {
+ dst_u[width - 1] = src_uv[0];
+ dst_v[width - 1] = src_uv[1];
+ }
+}
+
+void ARGBMirrorRow_C(const uint8* src, uint8* dst, int width) {
+ int x;
+ const uint32* src32 = (const uint32*)(src);
+ uint32* dst32 = (uint32*)(dst);
+ src32 += width - 1;
+ for (x = 0; x < width - 1; x += 2) {
+ dst32[x] = src32[0];
+ dst32[x + 1] = src32[-1];
+ src32 -= 2;
+ }
+ if (width & 1) {
+ dst32[width - 1] = src32[0];
+ }
+}
+
+void SplitUVRow_C(const uint8* src_uv, uint8* dst_u, uint8* dst_v, int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ dst_u[x] = src_uv[0];
+ dst_u[x + 1] = src_uv[2];
+ dst_v[x] = src_uv[1];
+ dst_v[x + 1] = src_uv[3];
+ src_uv += 4;
+ }
+ if (width & 1) {
+ dst_u[width - 1] = src_uv[0];
+ dst_v[width - 1] = src_uv[1];
+ }
+}
+
+void MergeUVRow_C(const uint8* src_u, const uint8* src_v, uint8* dst_uv,
+ int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ dst_uv[0] = src_u[x];
+ dst_uv[1] = src_v[x];
+ dst_uv[2] = src_u[x + 1];
+ dst_uv[3] = src_v[x + 1];
+ dst_uv += 4;
+ }
+ if (width & 1) {
+ dst_uv[0] = src_u[width - 1];
+ dst_uv[1] = src_v[width - 1];
+ }
+}
+
+void CopyRow_C(const uint8* src, uint8* dst, int count) {
+ memcpy(dst, src, count);
+}
+
+void CopyRow_16_C(const uint16* src, uint16* dst, int count) {
+ memcpy(dst, src, count * 2);
+}
+
+void SetRow_C(uint8* dst, uint32 v8, int count) {
+#ifdef _MSC_VER
+ // VC will generate rep stosb.
+ int x;
+ for (x = 0; x < count; ++x) {
+ dst[x] = v8;
+ }
+#else
+ memset(dst, v8, count);
+#endif
+}
+
+void ARGBSetRows_C(uint8* dst, uint32 v32, int width,
+ int dst_stride, int height) {
+ int y;
+ for (y = 0; y < height; ++y) {
+ uint32* d = (uint32*)(dst);
+ int x;
+ for (x = 0; x < width; ++x) {
+ d[x] = v32;
+ }
+ dst += dst_stride;
+ }
+}
+
+// Filter 2 rows of YUY2 UV's (422) into U and V (420).
+void YUY2ToUVRow_C(const uint8* src_yuy2, int src_stride_yuy2,
+ uint8* dst_u, uint8* dst_v, int width) {
+ // Output a row of UV values, filtering 2 rows of YUY2.
+ int x;
+ for (x = 0; x < width; x += 2) {
+ dst_u[0] = (src_yuy2[1] + src_yuy2[src_stride_yuy2 + 1] + 1) >> 1;
+ dst_v[0] = (src_yuy2[3] + src_yuy2[src_stride_yuy2 + 3] + 1) >> 1;
+ src_yuy2 += 4;
+ dst_u += 1;
+ dst_v += 1;
+ }
+}
+
+// Copy row of YUY2 UV's (422) into U and V (422).
+void YUY2ToUV422Row_C(const uint8* src_yuy2,
+ uint8* dst_u, uint8* dst_v, int width) {
+ // Output a row of UV values.
+ int x;
+ for (x = 0; x < width; x += 2) {
+ dst_u[0] = src_yuy2[1];
+ dst_v[0] = src_yuy2[3];
+ src_yuy2 += 4;
+ dst_u += 1;
+ dst_v += 1;
+ }
+}
+
+// Copy row of YUY2 Y's (422) into Y (420/422).
+void YUY2ToYRow_C(const uint8* src_yuy2, uint8* dst_y, int width) {
+ // Output a row of Y values.
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ dst_y[x] = src_yuy2[0];
+ dst_y[x + 1] = src_yuy2[2];
+ src_yuy2 += 4;
+ }
+ if (width & 1) {
+ dst_y[width - 1] = src_yuy2[0];
+ }
+}
+
+// Filter 2 rows of UYVY UV's (422) into U and V (420).
+void UYVYToUVRow_C(const uint8* src_uyvy, int src_stride_uyvy,
+ uint8* dst_u, uint8* dst_v, int width) {
+ // Output a row of UV values.
+ int x;
+ for (x = 0; x < width; x += 2) {
+ dst_u[0] = (src_uyvy[0] + src_uyvy[src_stride_uyvy + 0] + 1) >> 1;
+ dst_v[0] = (src_uyvy[2] + src_uyvy[src_stride_uyvy + 2] + 1) >> 1;
+ src_uyvy += 4;
+ dst_u += 1;
+ dst_v += 1;
+ }
+}
+
+// Copy row of UYVY UV's (422) into U and V (422).
+void UYVYToUV422Row_C(const uint8* src_uyvy,
+ uint8* dst_u, uint8* dst_v, int width) {
+ // Output a row of UV values.
+ int x;
+ for (x = 0; x < width; x += 2) {
+ dst_u[0] = src_uyvy[0];
+ dst_v[0] = src_uyvy[2];
+ src_uyvy += 4;
+ dst_u += 1;
+ dst_v += 1;
+ }
+}
+
+// Copy row of UYVY Y's (422) into Y (420/422).
+void UYVYToYRow_C(const uint8* src_uyvy, uint8* dst_y, int width) {
+ // Output a row of Y values.
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ dst_y[x] = src_uyvy[1];
+ dst_y[x + 1] = src_uyvy[3];
+ src_uyvy += 4;
+ }
+ if (width & 1) {
+ dst_y[width - 1] = src_uyvy[1];
+ }
+}
+
+#define BLEND(f, b, a) (((256 - a) * b) >> 8) + f
+
+// Blend src_argb0 over src_argb1 and store to dst_argb.
+// dst_argb may be src_argb0 or src_argb1.
+// This code mimics the SSSE3 version for better testability.
+void ARGBBlendRow_C(const uint8* src_argb0, const uint8* src_argb1,
+ uint8* dst_argb, int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ uint32 fb = src_argb0[0];
+ uint32 fg = src_argb0[1];
+ uint32 fr = src_argb0[2];
+ uint32 a = src_argb0[3];
+ uint32 bb = src_argb1[0];
+ uint32 bg = src_argb1[1];
+ uint32 br = src_argb1[2];
+ dst_argb[0] = BLEND(fb, bb, a);
+ dst_argb[1] = BLEND(fg, bg, a);
+ dst_argb[2] = BLEND(fr, br, a);
+ dst_argb[3] = 255u;
+
+ fb = src_argb0[4 + 0];
+ fg = src_argb0[4 + 1];
+ fr = src_argb0[4 + 2];
+ a = src_argb0[4 + 3];
+ bb = src_argb1[4 + 0];
+ bg = src_argb1[4 + 1];
+ br = src_argb1[4 + 2];
+ dst_argb[4 + 0] = BLEND(fb, bb, a);
+ dst_argb[4 + 1] = BLEND(fg, bg, a);
+ dst_argb[4 + 2] = BLEND(fr, br, a);
+ dst_argb[4 + 3] = 255u;
+ src_argb0 += 8;
+ src_argb1 += 8;
+ dst_argb += 8;
+ }
+
+ if (width & 1) {
+ uint32 fb = src_argb0[0];
+ uint32 fg = src_argb0[1];
+ uint32 fr = src_argb0[2];
+ uint32 a = src_argb0[3];
+ uint32 bb = src_argb1[0];
+ uint32 bg = src_argb1[1];
+ uint32 br = src_argb1[2];
+ dst_argb[0] = BLEND(fb, bb, a);
+ dst_argb[1] = BLEND(fg, bg, a);
+ dst_argb[2] = BLEND(fr, br, a);
+ dst_argb[3] = 255u;
+ }
+}
+#undef BLEND
+#define ATTENUATE(f, a) (a | (a << 8)) * (f | (f << 8)) >> 24
+
+// Multiply source RGB by alpha and store to destination.
+// This code mimics the SSSE3 version for better testability.
+void ARGBAttenuateRow_C(const uint8* src_argb, uint8* dst_argb, int width) {
+ int i;
+ for (i = 0; i < width - 1; i += 2) {
+ uint32 b = src_argb[0];
+ uint32 g = src_argb[1];
+ uint32 r = src_argb[2];
+ uint32 a = src_argb[3];
+ dst_argb[0] = ATTENUATE(b, a);
+ dst_argb[1] = ATTENUATE(g, a);
+ dst_argb[2] = ATTENUATE(r, a);
+ dst_argb[3] = a;
+ b = src_argb[4];
+ g = src_argb[5];
+ r = src_argb[6];
+ a = src_argb[7];
+ dst_argb[4] = ATTENUATE(b, a);
+ dst_argb[5] = ATTENUATE(g, a);
+ dst_argb[6] = ATTENUATE(r, a);
+ dst_argb[7] = a;
+ src_argb += 8;
+ dst_argb += 8;
+ }
+
+ if (width & 1) {
+ const uint32 b = src_argb[0];
+ const uint32 g = src_argb[1];
+ const uint32 r = src_argb[2];
+ const uint32 a = src_argb[3];
+ dst_argb[0] = ATTENUATE(b, a);
+ dst_argb[1] = ATTENUATE(g, a);
+ dst_argb[2] = ATTENUATE(r, a);
+ dst_argb[3] = a;
+ }
+}
+#undef ATTENUATE
+
+// Divide source RGB by alpha and store to destination.
+// b = (b * 255 + (a / 2)) / a;
+// g = (g * 255 + (a / 2)) / a;
+// r = (r * 255 + (a / 2)) / a;
+// Reciprocal method is off by 1 on some values. ie 125
+// 8.8 fixed point inverse table with 1.0 in upper short and 1 / a in lower.
+#define T(a) 0x01000000 + (0x10000 / a)
+const uint32 fixed_invtbl8[256] = {
+ 0x01000000, 0x0100ffff, T(0x02), T(0x03), T(0x04), T(0x05), T(0x06), T(0x07),
+ T(0x08), T(0x09), T(0x0a), T(0x0b), T(0x0c), T(0x0d), T(0x0e), T(0x0f),
+ T(0x10), T(0x11), T(0x12), T(0x13), T(0x14), T(0x15), T(0x16), T(0x17),
+ T(0x18), T(0x19), T(0x1a), T(0x1b), T(0x1c), T(0x1d), T(0x1e), T(0x1f),
+ T(0x20), T(0x21), T(0x22), T(0x23), T(0x24), T(0x25), T(0x26), T(0x27),
+ T(0x28), T(0x29), T(0x2a), T(0x2b), T(0x2c), T(0x2d), T(0x2e), T(0x2f),
+ T(0x30), T(0x31), T(0x32), T(0x33), T(0x34), T(0x35), T(0x36), T(0x37),
+ T(0x38), T(0x39), T(0x3a), T(0x3b), T(0x3c), T(0x3d), T(0x3e), T(0x3f),
+ T(0x40), T(0x41), T(0x42), T(0x43), T(0x44), T(0x45), T(0x46), T(0x47),
+ T(0x48), T(0x49), T(0x4a), T(0x4b), T(0x4c), T(0x4d), T(0x4e), T(0x4f),
+ T(0x50), T(0x51), T(0x52), T(0x53), T(0x54), T(0x55), T(0x56), T(0x57),
+ T(0x58), T(0x59), T(0x5a), T(0x5b), T(0x5c), T(0x5d), T(0x5e), T(0x5f),
+ T(0x60), T(0x61), T(0x62), T(0x63), T(0x64), T(0x65), T(0x66), T(0x67),
+ T(0x68), T(0x69), T(0x6a), T(0x6b), T(0x6c), T(0x6d), T(0x6e), T(0x6f),
+ T(0x70), T(0x71), T(0x72), T(0x73), T(0x74), T(0x75), T(0x76), T(0x77),
+ T(0x78), T(0x79), T(0x7a), T(0x7b), T(0x7c), T(0x7d), T(0x7e), T(0x7f),
+ T(0x80), T(0x81), T(0x82), T(0x83), T(0x84), T(0x85), T(0x86), T(0x87),
+ T(0x88), T(0x89), T(0x8a), T(0x8b), T(0x8c), T(0x8d), T(0x8e), T(0x8f),
+ T(0x90), T(0x91), T(0x92), T(0x93), T(0x94), T(0x95), T(0x96), T(0x97),
+ T(0x98), T(0x99), T(0x9a), T(0x9b), T(0x9c), T(0x9d), T(0x9e), T(0x9f),
+ T(0xa0), T(0xa1), T(0xa2), T(0xa3), T(0xa4), T(0xa5), T(0xa6), T(0xa7),
+ T(0xa8), T(0xa9), T(0xaa), T(0xab), T(0xac), T(0xad), T(0xae), T(0xaf),
+ T(0xb0), T(0xb1), T(0xb2), T(0xb3), T(0xb4), T(0xb5), T(0xb6), T(0xb7),
+ T(0xb8), T(0xb9), T(0xba), T(0xbb), T(0xbc), T(0xbd), T(0xbe), T(0xbf),
+ T(0xc0), T(0xc1), T(0xc2), T(0xc3), T(0xc4), T(0xc5), T(0xc6), T(0xc7),
+ T(0xc8), T(0xc9), T(0xca), T(0xcb), T(0xcc), T(0xcd), T(0xce), T(0xcf),
+ T(0xd0), T(0xd1), T(0xd2), T(0xd3), T(0xd4), T(0xd5), T(0xd6), T(0xd7),
+ T(0xd8), T(0xd9), T(0xda), T(0xdb), T(0xdc), T(0xdd), T(0xde), T(0xdf),
+ T(0xe0), T(0xe1), T(0xe2), T(0xe3), T(0xe4), T(0xe5), T(0xe6), T(0xe7),
+ T(0xe8), T(0xe9), T(0xea), T(0xeb), T(0xec), T(0xed), T(0xee), T(0xef),
+ T(0xf0), T(0xf1), T(0xf2), T(0xf3), T(0xf4), T(0xf5), T(0xf6), T(0xf7),
+ T(0xf8), T(0xf9), T(0xfa), T(0xfb), T(0xfc), T(0xfd), T(0xfe), 0x01000100 };
+#undef T
+
+void ARGBUnattenuateRow_C(const uint8* src_argb, uint8* dst_argb, int width) {
+ int i;
+ for (i = 0; i < width; ++i) {
+ uint32 b = src_argb[0];
+ uint32 g = src_argb[1];
+ uint32 r = src_argb[2];
+ const uint32 a = src_argb[3];
+ const uint32 ia = fixed_invtbl8[a] & 0xffff; // 8.8 fixed point
+ b = (b * ia) >> 8;
+ g = (g * ia) >> 8;
+ r = (r * ia) >> 8;
+ // Clamping should not be necessary but is free in assembly.
+ dst_argb[0] = clamp255(b);
+ dst_argb[1] = clamp255(g);
+ dst_argb[2] = clamp255(r);
+ dst_argb[3] = a;
+ src_argb += 4;
+ dst_argb += 4;
+ }
+}
+
+void ComputeCumulativeSumRow_C(const uint8* row, int32* cumsum,
+ const int32* previous_cumsum, int width) {
+ int32 row_sum[4] = {0, 0, 0, 0};
+ int x;
+ for (x = 0; x < width; ++x) {
+ row_sum[0] += row[x * 4 + 0];
+ row_sum[1] += row[x * 4 + 1];
+ row_sum[2] += row[x * 4 + 2];
+ row_sum[3] += row[x * 4 + 3];
+ cumsum[x * 4 + 0] = row_sum[0] + previous_cumsum[x * 4 + 0];
+ cumsum[x * 4 + 1] = row_sum[1] + previous_cumsum[x * 4 + 1];
+ cumsum[x * 4 + 2] = row_sum[2] + previous_cumsum[x * 4 + 2];
+ cumsum[x * 4 + 3] = row_sum[3] + previous_cumsum[x * 4 + 3];
+ }
+}
+
+void CumulativeSumToAverageRow_C(const int32* tl, const int32* bl,
+ int w, int area, uint8* dst, int count) {
+ float ooa = 1.0f / area;
+ int i;
+ for (i = 0; i < count; ++i) {
+ dst[0] = (uint8)((bl[w + 0] + tl[0] - bl[0] - tl[w + 0]) * ooa);
+ dst[1] = (uint8)((bl[w + 1] + tl[1] - bl[1] - tl[w + 1]) * ooa);
+ dst[2] = (uint8)((bl[w + 2] + tl[2] - bl[2] - tl[w + 2]) * ooa);
+ dst[3] = (uint8)((bl[w + 3] + tl[3] - bl[3] - tl[w + 3]) * ooa);
+ dst += 4;
+ tl += 4;
+ bl += 4;
+ }
+}
+
+// Copy pixels from rotated source to destination row with a slope.
+LIBYUV_API
+void ARGBAffineRow_C(const uint8* src_argb, int src_argb_stride,
+ uint8* dst_argb, const float* uv_dudv, int width) {
+ int i;
+ // Render a row of pixels from source into a buffer.
+ float uv[2];
+ uv[0] = uv_dudv[0];
+ uv[1] = uv_dudv[1];
+ for (i = 0; i < width; ++i) {
+ int x = (int)(uv[0]);
+ int y = (int)(uv[1]);
+ *(uint32*)(dst_argb) =
+ *(const uint32*)(src_argb + y * src_argb_stride +
+ x * 4);
+ dst_argb += 4;
+ uv[0] += uv_dudv[2];
+ uv[1] += uv_dudv[3];
+ }
+}
+
+// Blend 2 rows into 1 for conversions such as I422ToI420.
+void HalfRow_C(const uint8* src_uv, int src_uv_stride,
+ uint8* dst_uv, int pix) {
+ int x;
+ for (x = 0; x < pix; ++x) {
+ dst_uv[x] = (src_uv[x] + src_uv[src_uv_stride + x] + 1) >> 1;
+ }
+}
+
+void HalfRow_16_C(const uint16* src_uv, int src_uv_stride,
+ uint16* dst_uv, int pix) {
+ int x;
+ for (x = 0; x < pix; ++x) {
+ dst_uv[x] = (src_uv[x] + src_uv[src_uv_stride + x] + 1) >> 1;
+ }
+}
+
+// C version 2x2 -> 2x1.
+void InterpolateRow_C(uint8* dst_ptr, const uint8* src_ptr,
+ ptrdiff_t src_stride,
+ int width, int source_y_fraction) {
+ int y1_fraction = source_y_fraction;
+ int y0_fraction = 256 - y1_fraction;
+ const uint8* src_ptr1 = src_ptr + src_stride;
+ int x;
+ if (source_y_fraction == 0) {
+ memcpy(dst_ptr, src_ptr, width);
+ return;
+ }
+ if (source_y_fraction == 128) {
+ HalfRow_C(src_ptr, (int)(src_stride), dst_ptr, width);
+ return;
+ }
+ for (x = 0; x < width - 1; x += 2) {
+ dst_ptr[0] = (src_ptr[0] * y0_fraction + src_ptr1[0] * y1_fraction) >> 8;
+ dst_ptr[1] = (src_ptr[1] * y0_fraction + src_ptr1[1] * y1_fraction) >> 8;
+ src_ptr += 2;
+ src_ptr1 += 2;
+ dst_ptr += 2;
+ }
+ if (width & 1) {
+ dst_ptr[0] = (src_ptr[0] * y0_fraction + src_ptr1[0] * y1_fraction) >> 8;
+ }
+}
+
+void InterpolateRow_16_C(uint16* dst_ptr, const uint16* src_ptr,
+ ptrdiff_t src_stride,
+ int width, int source_y_fraction) {
+ int y1_fraction = source_y_fraction;
+ int y0_fraction = 256 - y1_fraction;
+ const uint16* src_ptr1 = src_ptr + src_stride;
+ int x;
+ if (source_y_fraction == 0) {
+ memcpy(dst_ptr, src_ptr, width * 2);
+ return;
+ }
+ if (source_y_fraction == 128) {
+ HalfRow_16_C(src_ptr, (int)(src_stride), dst_ptr, width);
+ return;
+ }
+ for (x = 0; x < width - 1; x += 2) {
+ dst_ptr[0] = (src_ptr[0] * y0_fraction + src_ptr1[0] * y1_fraction) >> 8;
+ dst_ptr[1] = (src_ptr[1] * y0_fraction + src_ptr1[1] * y1_fraction) >> 8;
+ src_ptr += 2;
+ src_ptr1 += 2;
+ dst_ptr += 2;
+ }
+ if (width & 1) {
+ dst_ptr[0] = (src_ptr[0] * y0_fraction + src_ptr1[0] * y1_fraction) >> 8;
+ }
+}
+
+// Select 2 channels from ARGB on alternating pixels. e.g. BGBGBGBG
+void ARGBToBayerRow_C(const uint8* src_argb,
+ uint8* dst_bayer, uint32 selector, int pix) {
+ int index0 = selector & 0xff;
+ int index1 = (selector >> 8) & 0xff;
+ // Copy a row of Bayer.
+ int x;
+ for (x = 0; x < pix - 1; x += 2) {
+ dst_bayer[0] = src_argb[index0];
+ dst_bayer[1] = src_argb[index1];
+ src_argb += 8;
+ dst_bayer += 2;
+ }
+ if (pix & 1) {
+ dst_bayer[0] = src_argb[index0];
+ }
+}
+
+// Select G channel from ARGB. e.g. GGGGGGGG
+void ARGBToBayerGGRow_C(const uint8* src_argb,
+ uint8* dst_bayer, uint32 selector, int pix) {
+ // Copy a row of G.
+ int x;
+ for (x = 0; x < pix - 1; x += 2) {
+ dst_bayer[0] = src_argb[1];
+ dst_bayer[1] = src_argb[5];
+ src_argb += 8;
+ dst_bayer += 2;
+ }
+ if (pix & 1) {
+ dst_bayer[0] = src_argb[1];
+ }
+}
+
+// Use first 4 shuffler values to reorder ARGB channels.
+void ARGBShuffleRow_C(const uint8* src_argb, uint8* dst_argb,
+ const uint8* shuffler, int pix) {
+ int index0 = shuffler[0];
+ int index1 = shuffler[1];
+ int index2 = shuffler[2];
+ int index3 = shuffler[3];
+ // Shuffle a row of ARGB.
+ int x;
+ for (x = 0; x < pix; ++x) {
+ // To support in-place conversion.
+ uint8 b = src_argb[index0];
+ uint8 g = src_argb[index1];
+ uint8 r = src_argb[index2];
+ uint8 a = src_argb[index3];
+ dst_argb[0] = b;
+ dst_argb[1] = g;
+ dst_argb[2] = r;
+ dst_argb[3] = a;
+ src_argb += 4;
+ dst_argb += 4;
+ }
+}
+
+void I422ToYUY2Row_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* dst_frame, int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ dst_frame[0] = src_y[0];
+ dst_frame[1] = src_u[0];
+ dst_frame[2] = src_y[1];
+ dst_frame[3] = src_v[0];
+ dst_frame += 4;
+ src_y += 2;
+ src_u += 1;
+ src_v += 1;
+ }
+ if (width & 1) {
+ dst_frame[0] = src_y[0];
+ dst_frame[1] = src_u[0];
+ dst_frame[2] = src_y[0]; // duplicate last y
+ dst_frame[3] = src_v[0];
+ }
+}
+
+void I422ToUYVYRow_C(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* dst_frame, int width) {
+ int x;
+ for (x = 0; x < width - 1; x += 2) {
+ dst_frame[0] = src_u[0];
+ dst_frame[1] = src_y[0];
+ dst_frame[2] = src_v[0];
+ dst_frame[3] = src_y[1];
+ dst_frame += 4;
+ src_y += 2;
+ src_u += 1;
+ src_v += 1;
+ }
+ if (width & 1) {
+ dst_frame[0] = src_u[0];
+ dst_frame[1] = src_y[0];
+ dst_frame[2] = src_v[0];
+ dst_frame[3] = src_y[0]; // duplicate last y
+ }
+}
+
+#if !defined(LIBYUV_DISABLE_X86) && defined(HAS_I422TOARGBROW_SSSE3)
+// row_win.cc has asm version, but GCC uses 2 step wrapper.
+#if !defined(_MSC_VER) && (defined(__x86_64__) || defined(__i386__))
+void I422ToRGB565Row_SSSE3(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* rgb_buf,
+ int width) {
+ // Allocate a row of ARGB.
+ align_buffer_64(row, width * 4);
+ I422ToARGBRow_SSSE3(src_y, src_u, src_v, row, width);
+ ARGBToRGB565Row_SSE2(row, rgb_buf, width);
+ free_aligned_buffer_64(row);
+}
+#endif // !defined(_MSC_VER) && (defined(__x86_64__) || defined(__i386__))
+
+#if defined(_M_IX86) || defined(__x86_64__) || defined(__i386__)
+void I422ToARGB1555Row_SSSE3(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* rgb_buf,
+ int width) {
+ // Allocate a row of ARGB.
+ align_buffer_64(row, width * 4);
+ I422ToARGBRow_SSSE3(src_y, src_u, src_v, row, width);
+ ARGBToARGB1555Row_SSE2(row, rgb_buf, width);
+ free_aligned_buffer_64(row);
+}
+
+void I422ToARGB4444Row_SSSE3(const uint8* src_y,
+ const uint8* src_u,
+ const uint8* src_v,
+ uint8* rgb_buf,
+ int width) {
+ // Allocate a row of ARGB.
+ align_buffer_64(row, width * 4);
+ I422ToARGBRow_SSSE3(src_y, src_u, src_v, row, width);
+ ARGBToARGB4444Row_SSE2(row, rgb_buf, width);
+ free_aligned_buffer_64(row);
+}
+
+void NV12ToRGB565Row_SSSE3(const uint8* src_y,
+ const uint8* src_uv,
+ uint8* dst_rgb565,
+ int width) {
+ // Allocate a row of ARGB.
+ align_buffer_64(row, width * 4);
+ NV12ToARGBRow_SSSE3(src_y, src_uv, row, width);
+ ARGBToRGB565Row_SSE2(row, dst_rgb565, width);
+ free_aligned_buffer_64(row);
+}
+
+void NV21ToRGB565Row_SSSE3(const uint8* src_y,
+ const uint8* src_vu,
+ uint8* dst_rgb565,
+ int width) {
+ // Allocate a row of ARGB.
+ align_buffer_64(row, width * 4);
+ NV21ToARGBRow_SSSE3(src_y, src_vu, row, width);
+ ARGBToRGB565Row_SSE2(row, dst_rgb565, width);
+ free_aligned_buffer_64(row);
+}
+
+void YUY2ToARGBRow_SSSE3(const uint8* src_yuy2,
+ uint8* dst_argb,
+ int width) {
+ // Allocate a rows of yuv.
+ align_buffer_64(row_y, ((width + 63) & ~63) * 2);
+ uint8* row_u = row_y + ((width + 63) & ~63);
+ uint8* row_v = row_u + ((width + 63) & ~63) / 2;
+ YUY2ToUV422Row_SSE2(src_yuy2, row_u, row_v, width);
+ YUY2ToYRow_SSE2(src_yuy2, row_y, width);
+ I422ToARGBRow_SSSE3(row_y, row_u, row_v, dst_argb, width);
+ free_aligned_buffer_64(row_y);
+}
+
+void YUY2ToARGBRow_Unaligned_SSSE3(const uint8* src_yuy2,
+ uint8* dst_argb,
+ int width) {
+ // Allocate a rows of yuv.
+ align_buffer_64(row_y, ((width + 63) & ~63) * 2);
+ uint8* row_u = row_y + ((width + 63) & ~63);
+ uint8* row_v = row_u + ((width + 63) & ~63) / 2;
+ YUY2ToUV422Row_Unaligned_SSE2(src_yuy2, row_u, row_v, width);
+ YUY2ToYRow_Unaligned_SSE2(src_yuy2, row_y, width);
+ I422ToARGBRow_Unaligned_SSSE3(row_y, row_u, row_v, dst_argb, width);
+ free_aligned_buffer_64(row_y);
+}
+
+void UYVYToARGBRow_SSSE3(const uint8* src_uyvy,
+ uint8* dst_argb,
+ int width) {
+ // Allocate a rows of yuv.
+ align_buffer_64(row_y, ((width + 63) & ~63) * 2);
+ uint8* row_u = row_y + ((width + 63) & ~63);
+ uint8* row_v = row_u + ((width + 63) & ~63) / 2;
+ UYVYToUV422Row_SSE2(src_uyvy, row_u, row_v, width);
+ UYVYToYRow_SSE2(src_uyvy, row_y, width);
+ I422ToARGBRow_SSSE3(row_y, row_u, row_v, dst_argb, width);
+ free_aligned_buffer_64(row_y);
+}
+
+void UYVYToARGBRow_Unaligned_SSSE3(const uint8* src_uyvy,
+ uint8* dst_argb,
+ int width) {
+ // Allocate a rows of yuv.
+ align_buffer_64(row_y, ((width + 63) & ~63) * 2);
+ uint8* row_u = row_y + ((width + 63) & ~63);
+ uint8* row_v = row_u + ((width + 63) & ~63) / 2;
+ UYVYToUV422Row_Unaligned_SSE2(src_uyvy, row_u, row_v, width);
+ UYVYToYRow_Unaligned_SSE2(src_uyvy, row_y, width);
+ I422ToARGBRow_Unaligned_SSSE3(row_y, row_u, row_v, dst_argb, width);
+ free_aligned_buffer_64(row_y);
+}
+
+#endif // defined(_M_IX86) || defined(__x86_64__) || defined(__i386__)
+#endif // !defined(LIBYUV_DISABLE_X86)
+
+void ARGBPolynomialRow_C(const uint8* src_argb,
+ uint8* dst_argb, const float* poly,
+ int width) {
+ int i;
+ for (i = 0; i < width; ++i) {
+ float b = (float)(src_argb[0]);
+ float g = (float)(src_argb[1]);
+ float r = (float)(src_argb[2]);
+ float a = (float)(src_argb[3]);
+ float b2 = b * b;
+ float g2 = g * g;
+ float r2 = r * r;
+ float a2 = a * a;
+ float db = poly[0] + poly[4] * b;
+ float dg = poly[1] + poly[5] * g;
+ float dr = poly[2] + poly[6] * r;
+ float da = poly[3] + poly[7] * a;
+ float b3 = b2 * b;
+ float g3 = g2 * g;
+ float r3 = r2 * r;
+ float a3 = a2 * a;
+ db += poly[8] * b2;
+ dg += poly[9] * g2;
+ dr += poly[10] * r2;
+ da += poly[11] * a2;
+ db += poly[12] * b3;
+ dg += poly[13] * g3;
+ dr += poly[14] * r3;
+ da += poly[15] * a3;
+
+ dst_argb[0] = Clamp((int32)(db));
+ dst_argb[1] = Clamp((int32)(dg));
+ dst_argb[2] = Clamp((int32)(dr));
+ dst_argb[3] = Clamp((int32)(da));
+ src_argb += 4;
+ dst_argb += 4;
+ }
+}
+
+void ARGBLumaColorTableRow_C(const uint8* src_argb, uint8* dst_argb, int width,
+ const uint8* luma, uint32 lumacoeff) {
+ uint32 bc = lumacoeff & 0xff;
+ uint32 gc = (lumacoeff >> 8) & 0xff;
+ uint32 rc = (lumacoeff >> 16) & 0xff;
+
+ int i;
+ for (i = 0; i < width - 1; i += 2) {
+ // Luminance in rows, color values in columns.
+ const uint8* luma0 = ((src_argb[0] * bc + src_argb[1] * gc +
+ src_argb[2] * rc) & 0x7F00u) + luma;
+ const uint8* luma1;
+ dst_argb[0] = luma0[src_argb[0]];
+ dst_argb[1] = luma0[src_argb[1]];
+ dst_argb[2] = luma0[src_argb[2]];
+ dst_argb[3] = src_argb[3];
+ luma1 = ((src_argb[4] * bc + src_argb[5] * gc +
+ src_argb[6] * rc) & 0x7F00u) + luma;
+ dst_argb[4] = luma1[src_argb[4]];
+ dst_argb[5] = luma1[src_argb[5]];
+ dst_argb[6] = luma1[src_argb[6]];
+ dst_argb[7] = src_argb[7];
+ src_argb += 8;
+ dst_argb += 8;
+ }
+ if (width & 1) {
+ // Luminance in rows, color values in columns.
+ const uint8* luma0 = ((src_argb[0] * bc + src_argb[1] * gc +
+ src_argb[2] * rc) & 0x7F00u) + luma;
+ dst_argb[0] = luma0[src_argb[0]];
+ dst_argb[1] = luma0[src_argb[1]];
+ dst_argb[2] = luma0[src_argb[2]];
+ dst_argb[3] = src_argb[3];
+ }
+}
+
+void ARGBCopyAlphaRow_C(const uint8* src, uint8* dst, int width) {
+ int i;
+ for (i = 0; i < width - 1; i += 2) {
+ dst[3] = src[3];
+ dst[7] = src[7];
+ dst += 8;
+ src += 8;
+ }
+ if (width & 1) {
+ dst[3] = src[3];
+ }
+}
+
+void ARGBCopyYToAlphaRow_C(const uint8* src, uint8* dst, int width) {
+ int i;
+ for (i = 0; i < width - 1; i += 2) {
+ dst[3] = src[0];
+ dst[7] = src[1];
+ dst += 8;
+ src += 2;
+ }
+ if (width & 1) {
+ dst[3] = src[0];
+ }
+}
+
+#ifdef __cplusplus
+} // extern "C"
+} // namespace libyuv
+#endif
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