// Copyright 2014 Google Inc. All Rights Reserved. // // Use of this source code is governed by a BSD-style license // that can be found in the COPYING 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. // ----------------------------------------------------------------------------- // // YUV to RGB upsampling functions. // // Author(s): Branimir Vasic ([email protected]) // Djordje Pesut ([email protected]) #include "src/dsp/dsp.h" #if defined(WEBP_USE_MIPS_DSP_R2) #include <assert.h> #include "src/dsp/yuv.h" #define YUV_TO_RGB … #if !defined(WEBP_REDUCE_CSP) static WEBP_INLINE void YuvToRgb(int y, int u, int v, uint8_t* const rgb) { int r, g, b; YUV_TO_RGB(y, u, v, r, g, b); rgb[0] = r; rgb[1] = g; rgb[2] = b; } static WEBP_INLINE void YuvToBgr(int y, int u, int v, uint8_t* const bgr) { int r, g, b; YUV_TO_RGB(y, u, v, r, g, b); bgr[0] = b; bgr[1] = g; bgr[2] = r; } static WEBP_INLINE void YuvToRgb565(int y, int u, int v, uint8_t* const rgb) { int r, g, b; YUV_TO_RGB(y, u, v, r, g, b); { const int rg = (r & 0xf8) | (g >> 5); const int gb = ((g << 3) & 0xe0) | (b >> 3); #if (WEBP_SWAP_16BIT_CSP == 1) rgb[0] = gb; rgb[1] = rg; #else rgb[0] = rg; rgb[1] = gb; #endif } } static WEBP_INLINE void YuvToRgba4444(int y, int u, int v, uint8_t* const argb) { int r, g, b; YUV_TO_RGB(y, u, v, r, g, b); { const int rg = (r & 0xf0) | (g >> 4); const int ba = (b & 0xf0) | 0x0f; // overwrite the lower 4 bits #if (WEBP_SWAP_16BIT_CSP == 1) argb[0] = ba; argb[1] = rg; #else argb[0] = rg; argb[1] = ba; #endif } } #endif // WEBP_REDUCE_CSP //----------------------------------------------------------------------------- // Alpha handling variants #if !defined(WEBP_REDUCE_CSP) static WEBP_INLINE void YuvToArgb(uint8_t y, uint8_t u, uint8_t v, uint8_t* const argb) { int r, g, b; YUV_TO_RGB(y, u, v, r, g, b); argb[0] = 0xff; argb[1] = r; argb[2] = g; argb[3] = b; } #endif // WEBP_REDUCE_CSP static WEBP_INLINE void YuvToBgra(uint8_t y, uint8_t u, uint8_t v, uint8_t* const bgra) { int r, g, b; YUV_TO_RGB(y, u, v, r, g, b); bgra[0] = b; bgra[1] = g; bgra[2] = r; bgra[3] = 0xff; } static WEBP_INLINE void YuvToRgba(uint8_t y, uint8_t u, uint8_t v, uint8_t* const rgba) { int r, g, b; YUV_TO_RGB(y, u, v, r, g, b); rgba[0] = r; rgba[1] = g; rgba[2] = b; rgba[3] = 0xff; } //------------------------------------------------------------------------------ // Fancy upsampler #ifdef FANCY_UPSAMPLING // Given samples laid out in a square as: // [a b] // [c d] // we interpolate u/v as: // ([9*a + 3*b + 3*c + d 3*a + 9*b + 3*c + d] + [8 8]) / 16 // ([3*a + b + 9*c + 3*d a + 3*b + 3*c + 9*d] [8 8]) / 16 // We process u and v together stashed into 32bit (16bit each). #define LOAD_UV … #define UPSAMPLE_FUNC … // All variants implemented. UPSAMPLE_FUNC(UpsampleRgbaLinePair, YuvToRgba, 4) UPSAMPLE_FUNC(UpsampleBgraLinePair, YuvToBgra, 4) #if !defined(WEBP_REDUCE_CSP) UPSAMPLE_FUNC(UpsampleRgbLinePair, YuvToRgb, 3) UPSAMPLE_FUNC(UpsampleBgrLinePair, YuvToBgr, 3) UPSAMPLE_FUNC(UpsampleArgbLinePair, YuvToArgb, 4) UPSAMPLE_FUNC(UpsampleRgba4444LinePair, YuvToRgba4444, 2) UPSAMPLE_FUNC(UpsampleRgb565LinePair, YuvToRgb565, 2) #endif // WEBP_REDUCE_CSP #undef LOAD_UV #undef UPSAMPLE_FUNC //------------------------------------------------------------------------------ // Entry point extern void WebPInitUpsamplersMIPSdspR2(void); WEBP_TSAN_IGNORE_FUNCTION void WebPInitUpsamplersMIPSdspR2(void) { WebPUpsamplers[MODE_RGBA] = UpsampleRgbaLinePair; WebPUpsamplers[MODE_BGRA] = UpsampleBgraLinePair; WebPUpsamplers[MODE_rgbA] = UpsampleRgbaLinePair; WebPUpsamplers[MODE_bgrA] = UpsampleBgraLinePair; #if !defined(WEBP_REDUCE_CSP) WebPUpsamplers[MODE_RGB] = UpsampleRgbLinePair; WebPUpsamplers[MODE_BGR] = UpsampleBgrLinePair; WebPUpsamplers[MODE_ARGB] = UpsampleArgbLinePair; WebPUpsamplers[MODE_RGBA_4444] = UpsampleRgba4444LinePair; WebPUpsamplers[MODE_RGB_565] = UpsampleRgb565LinePair; WebPUpsamplers[MODE_Argb] = UpsampleArgbLinePair; WebPUpsamplers[MODE_rgbA_4444] = UpsampleRgba4444LinePair; #endif // WEBP_REDUCE_CSP } #endif // FANCY_UPSAMPLING //------------------------------------------------------------------------------ // YUV444 converter #define YUV444_FUNC … YUV444_FUNC(Yuv444ToRgba, YuvToRgba, 4) YUV444_FUNC(Yuv444ToBgra, YuvToBgra, 4) #if !defined(WEBP_REDUCE_CSP) YUV444_FUNC(Yuv444ToRgb, YuvToRgb, 3) YUV444_FUNC(Yuv444ToBgr, YuvToBgr, 3) YUV444_FUNC(Yuv444ToArgb, YuvToArgb, 4) YUV444_FUNC(Yuv444ToRgba4444, YuvToRgba4444, 2) YUV444_FUNC(Yuv444ToRgb565, YuvToRgb565, 2) #endif // WEBP_REDUCE_CSP #undef YUV444_FUNC //------------------------------------------------------------------------------ // Entry point extern void WebPInitYUV444ConvertersMIPSdspR2(void); WEBP_TSAN_IGNORE_FUNCTION void WebPInitYUV444ConvertersMIPSdspR2(void) { WebPYUV444Converters[MODE_RGBA] = Yuv444ToRgba; WebPYUV444Converters[MODE_BGRA] = Yuv444ToBgra; WebPYUV444Converters[MODE_rgbA] = Yuv444ToRgba; WebPYUV444Converters[MODE_bgrA] = Yuv444ToBgra; #if !defined(WEBP_REDUCE_CSP) WebPYUV444Converters[MODE_RGB] = Yuv444ToRgb; WebPYUV444Converters[MODE_BGR] = Yuv444ToBgr; WebPYUV444Converters[MODE_ARGB] = Yuv444ToArgb; WebPYUV444Converters[MODE_RGBA_4444] = Yuv444ToRgba4444; WebPYUV444Converters[MODE_RGB_565] = Yuv444ToRgb565; WebPYUV444Converters[MODE_Argb] = Yuv444ToArgb; WebPYUV444Converters[MODE_rgbA_4444] = Yuv444ToRgba4444; #endif // WEBP_REDUCE_CSP } #else // !WEBP_USE_MIPS_DSP_R2 WEBP_DSP_INIT_STUB(WebPInitYUV444ConvertersMIPSdspR2) #endif // WEBP_USE_MIPS_DSP_R2 #if !(defined(FANCY_UPSAMPLING) && defined(WEBP_USE_MIPS_DSP_R2)) WEBP_DSP_INIT_STUB(WebPInitUpsamplersMIPSdspR2) #endif
Codebase Browser
godot