diff options
Diffstat (limited to 'src/main/jni/libyuv/source/row_common.cc')
| -rw-r--r-- | src/main/jni/libyuv/source/row_common.cc | 2286 |
1 files changed, 2286 insertions, 0 deletions
diff --git a/src/main/jni/libyuv/source/row_common.cc b/src/main/jni/libyuv/source/row_common.cc new file mode 100644 index 000000000..fa2b752a2 --- /dev/null +++ b/src/main/jni/libyuv/source/row_common.cc @@ -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 "libyuv/row.h" + +#include <string.h> // For memcpy and memset. + +#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 |