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// 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.
// -----------------------------------------------------------------------------
//
// ARGB making functions.
//
// Author: Djordje Pesut (djordje.pesut@imgtec.com)
#include "./dsp.h"
static WEBP_INLINE uint32_t MakeARGB32(int a, int r, int g, int b) {
return (((uint32_t)a << 24) | (r << 16) | (g << 8) | b);
}
static void PackARGB(const uint8_t* a, const uint8_t* r, const uint8_t* g,
const uint8_t* b, int len, uint32_t* out) {
int i;
for (i = 0; i < len; ++i) {
out[i] = MakeARGB32(a[4 * i], r[4 * i], g[4 * i], b[4 * i]);
}
}
static void PackRGB(const uint8_t* r, const uint8_t* g, const uint8_t* b,
int len, int step, uint32_t* out) {
int i, offset = 0;
for (i = 0; i < len; ++i) {
out[i] = MakeARGB32(0xff, r[offset], g[offset], b[offset]);
offset += step;
}
}
void (*VP8PackARGB)(const uint8_t*, const uint8_t*, const uint8_t*,
const uint8_t*, int, uint32_t*);
void (*VP8PackRGB)(const uint8_t*, const uint8_t*, const uint8_t*,
int, int, uint32_t*);
extern void VP8EncDspARGBInitMIPSdspR2(void);
extern void VP8EncDspARGBInitSSE2(void);
static volatile VP8CPUInfo argb_last_cpuinfo_used =
(VP8CPUInfo)&argb_last_cpuinfo_used;
WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspARGBInit(void) {
if (argb_last_cpuinfo_used == VP8GetCPUInfo) return;
VP8PackARGB = PackARGB;
VP8PackRGB = PackRGB;
// If defined, use CPUInfo() to overwrite some pointers with faster versions.
if (VP8GetCPUInfo != NULL) {
#if defined(WEBP_USE_SSE2)
if (VP8GetCPUInfo(kSSE2)) {
VP8EncDspARGBInitSSE2();
}
#endif
#if defined(WEBP_USE_MIPS_DSP_R2)
if (VP8GetCPUInfo(kMIPSdspR2)) {
VP8EncDspARGBInitMIPSdspR2();
}
#endif
}
argb_last_cpuinfo_used = VP8GetCPUInfo;
}
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