15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright 2010 Google Inc. All Rights Reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 3eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// Use of this source code is governed by a BSD-style license 4eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// that can be found in the COPYING file in the root of the source 5eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// tree. An additional intellectual property rights grant can be found 6eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// in the file PATENTS. All contributing project authors may 7eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch// be found in the AUTHORS file in the root of the source tree. 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ----------------------------------------------------------------------------- 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 10c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch// YUV->RGB conversion functions 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Author: Skal (pascal.massimino@gmail.com) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "./yuv.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#if defined(WEBP_YUV_USE_TABLE) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static int done = 0; 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static WEBP_INLINE uint8_t clip(int v, int max_value) { 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return v < 0 ? 0 : v > max_value ? max_value : v; 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)int16_t VP8kVToR[256], VP8kUToB[256]; 255d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)int32_t VP8kVToG[256], VP8kUToG[256]; 265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)uint8_t VP8kClip[YUV_RANGE_MAX - YUV_RANGE_MIN]; 275d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)uint8_t VP8kClip4Bits[YUV_RANGE_MAX - YUV_RANGE_MIN]; 285d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void VP8YUVInit(void) { 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int i; 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (done) { 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#ifndef USE_YUVj 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (i = 0; i < 256; ++i) { 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8kVToR[i] = (89858 * (i - 128) + YUV_HALF) >> YUV_FIX; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8kUToG[i] = -22014 * (i - 128) + YUV_HALF; 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8kVToG[i] = -45773 * (i - 128); 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8kUToB[i] = (113618 * (i - 128) + YUV_HALF) >> YUV_FIX; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (i = YUV_RANGE_MIN; i < YUV_RANGE_MAX; ++i) { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const int k = ((i - 16) * 76283 + YUV_HALF) >> YUV_FIX; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8kClip[i - YUV_RANGE_MIN] = clip(k, 255); 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VP8kClip4Bits[i - YUV_RANGE_MIN] = clip((k + 8) >> 4, 15); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#else 472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) for (i = 0; i < 256; ++i) { 482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VP8kVToR[i] = (91881 * (i - 128) + YUV_HALF) >> YUV_FIX; 492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VP8kUToG[i] = -22554 * (i - 128) + YUV_HALF; 502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VP8kVToG[i] = -46802 * (i - 128); 512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VP8kUToB[i] = (116130 * (i - 128) + YUV_HALF) >> YUV_FIX; 522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) for (i = YUV_RANGE_MIN; i < YUV_RANGE_MAX; ++i) { 542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const int k = i; 552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VP8kClip[i - YUV_RANGE_MIN] = clip(k, 255); 562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) VP8kClip4Bits[i - YUV_RANGE_MIN] = clip((k + 8) >> 4, 15); 572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) done = 1; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#else 642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void VP8YUVInit(void) {} 662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif // WEBP_YUV_USE_TABLE 682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 695d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)//----------------------------------------------------------------------------- 70c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch// Plain-C version 71c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch 72c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch#define ROW_FUNC(FUNC_NAME, FUNC, XSTEP) \ 73c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdochstatic void FUNC_NAME(const uint8_t* y, \ 74c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch const uint8_t* u, const uint8_t* v, \ 75c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch uint8_t* dst, int len) { \ 76c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch const uint8_t* const end = dst + (len & ~1) * XSTEP; \ 77c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch while (dst != end) { \ 78c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch FUNC(y[0], u[0], v[0], dst); \ 79c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch FUNC(y[1], u[0], v[0], dst + XSTEP); \ 80c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch y += 2; \ 81c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch ++u; \ 82c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch ++v; \ 83c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch dst += 2 * XSTEP; \ 84c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch } \ 85c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch if (len & 1) { \ 86c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch FUNC(y[0], u[0], v[0], dst); \ 87c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch } \ 88c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch} \ 89c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch 90c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch// All variants implemented. 91c1942b189965ab0a2086aa6de64d966e9e16fe6bBen MurdochROW_FUNC(YuvToRgbRow, VP8YuvToRgb, 3) 92c1942b189965ab0a2086aa6de64d966e9e16fe6bBen MurdochROW_FUNC(YuvToBgrRow, VP8YuvToBgr, 3) 93c1942b189965ab0a2086aa6de64d966e9e16fe6bBen MurdochROW_FUNC(YuvToRgbaRow, VP8YuvToRgba, 4) 94c1942b189965ab0a2086aa6de64d966e9e16fe6bBen MurdochROW_FUNC(YuvToBgraRow, VP8YuvToBgra, 4) 95c1942b189965ab0a2086aa6de64d966e9e16fe6bBen MurdochROW_FUNC(YuvToArgbRow, VP8YuvToArgb, 4) 96c1942b189965ab0a2086aa6de64d966e9e16fe6bBen MurdochROW_FUNC(YuvToRgba4444Row, VP8YuvToRgba4444, 2) 97c1942b189965ab0a2086aa6de64d966e9e16fe6bBen MurdochROW_FUNC(YuvToRgb565Row, VP8YuvToRgb565, 2) 98c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch 99c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch#undef ROW_FUNC 100c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch 101c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch// Main call for processing a plane with a WebPSamplerRowFunc function: 102c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdochvoid WebPSamplerProcessPlane(const uint8_t* y, int y_stride, 103c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch const uint8_t* u, const uint8_t* v, int uv_stride, 104c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch uint8_t* dst, int dst_stride, 105c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch int width, int height, WebPSamplerRowFunc func) { 106c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch int j; 107c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch for (j = 0; j < height; ++j) { 108c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch func(y, u, v, dst, width); 109c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch y += y_stride; 110c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch if (j & 1) { 111c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch u += uv_stride; 112c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch v += uv_stride; 1135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 114c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch dst += dst_stride; 1155d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 1165d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 1175d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 118c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch//----------------------------------------------------------------------------- 119c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch// Main call 120c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch 121c1942b189965ab0a2086aa6de64d966e9e16fe6bBen MurdochWebPSamplerRowFunc WebPSamplers[MODE_LAST]; 122c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch 123c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdochextern void WebPInitSamplersSSE2(void); 124c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdochextern void WebPInitSamplersMIPS32(void); 125c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch 126c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdochvoid WebPInitSamplers(void) { 127c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPSamplers[MODE_RGB] = YuvToRgbRow; 128c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPSamplers[MODE_RGBA] = YuvToRgbaRow; 129c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPSamplers[MODE_BGR] = YuvToBgrRow; 130c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPSamplers[MODE_BGRA] = YuvToBgraRow; 131c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPSamplers[MODE_ARGB] = YuvToArgbRow; 132c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPSamplers[MODE_RGBA_4444] = YuvToRgba4444Row; 133c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPSamplers[MODE_RGB_565] = YuvToRgb565Row; 134c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPSamplers[MODE_rgbA] = YuvToRgbaRow; 135c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPSamplers[MODE_bgrA] = YuvToBgraRow; 136c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPSamplers[MODE_Argb] = YuvToArgbRow; 137c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPSamplers[MODE_rgbA_4444] = YuvToRgba4444Row; 138c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch 139c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch // If defined, use CPUInfo() to overwrite some pointers with faster versions. 140c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch if (VP8GetCPUInfo != NULL) { 141c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch#if defined(WEBP_USE_SSE2) 142c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch if (VP8GetCPUInfo(kSSE2)) { 143c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPInitSamplersSSE2(); 144c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch } 145c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch#endif // WEBP_USE_SSE2 146c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch#if defined(WEBP_USE_MIPS32) 147c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch if (VP8GetCPUInfo(kMIPS32)) { 148c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch WebPInitSamplersMIPS32(); 149c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch } 150c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch#endif // WEBP_USE_MIPS32 1515d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 1525d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 1535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 154c1942b189965ab0a2086aa6de64d966e9e16fe6bBen Murdoch//----------------------------------------------------------------------------- 155