1 // Copyright 2014 Google Inc. All Rights Reserved. 2 // 3 // Use of this source code is governed by a BSD-style license 4 // that can be found in the COPYING file in the root of the source 5 // tree. An additional intellectual property rights grant can be found 6 // in the file PATENTS. All contributing project authors may 7 // be found in the AUTHORS file in the root of the source tree. 8 // ----------------------------------------------------------------------------- 9 // 10 // ARGB making functions. 11 // 12 // Author: Djordje Pesut (djordje.pesut (at) imgtec.com) 13 14 #include "./dsp.h" 15 16 static WEBP_INLINE uint32_t MakeARGB32(int a, int r, int g, int b) { 17 return (((uint32_t)a << 24) | (r << 16) | (g << 8) | b); 18 } 19 20 static void PackARGB(const uint8_t* a, const uint8_t* r, const uint8_t* g, 21 const uint8_t* b, int len, uint32_t* out) { 22 int i; 23 for (i = 0; i < len; ++i) { 24 out[i] = MakeARGB32(a[4 * i], r[4 * i], g[4 * i], b[4 * i]); 25 } 26 } 27 28 static void PackRGB(const uint8_t* r, const uint8_t* g, const uint8_t* b, 29 int len, int step, uint32_t* out) { 30 int i, offset = 0; 31 for (i = 0; i < len; ++i) { 32 out[i] = MakeARGB32(0xff, r[offset], g[offset], b[offset]); 33 offset += step; 34 } 35 } 36 37 void (*VP8PackARGB)(const uint8_t*, const uint8_t*, const uint8_t*, 38 const uint8_t*, int, uint32_t*); 39 void (*VP8PackRGB)(const uint8_t*, const uint8_t*, const uint8_t*, 40 int, int, uint32_t*); 41 42 extern void VP8EncDspARGBInitMIPSdspR2(void); 43 extern void VP8EncDspARGBInitSSE2(void); 44 45 static volatile VP8CPUInfo argb_last_cpuinfo_used = 46 (VP8CPUInfo)&argb_last_cpuinfo_used; 47 48 WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspARGBInit(void) { 49 if (argb_last_cpuinfo_used == VP8GetCPUInfo) return; 50 51 VP8PackARGB = PackARGB; 52 VP8PackRGB = PackRGB; 53 54 // If defined, use CPUInfo() to overwrite some pointers with faster versions. 55 if (VP8GetCPUInfo != NULL) { 56 #if defined(WEBP_USE_SSE2) 57 if (VP8GetCPUInfo(kSSE2)) { 58 VP8EncDspARGBInitSSE2(); 59 } 60 #endif 61 #if defined(WEBP_USE_MIPS_DSP_R2) 62 if (VP8GetCPUInfo(kMIPSdspR2)) { 63 VP8EncDspARGBInitMIPSdspR2(); 64 } 65 #endif 66 } 67 argb_last_cpuinfo_used = VP8GetCPUInfo; 68 } 69
