mirror of
https://github.com/webmproject/libwebp.git
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68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
// Copyright 2014 Google Inc. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the COPYING file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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// -----------------------------------------------------------------------------
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//
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// ARGB making functions.
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//
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// Author: Djordje Pesut (djordje.pesut@imgtec.com)
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#include "./dsp.h"
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static WEBP_INLINE uint32_t MakeARGB32(int a, int r, int g, int b) {
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return (((uint32_t)a << 24) | (r << 16) | (g << 8) | b);
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}
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static void PackARGB(const uint8_t* a, const uint8_t* r, const uint8_t* g,
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const uint8_t* b, int len, uint32_t* out) {
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int i;
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for (i = 0; i < len; ++i) {
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out[i] = MakeARGB32(a[4 * i], r[4 * i], g[4 * i], b[4 * i]);
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}
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}
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static void PackRGB(const uint8_t* r, const uint8_t* g, const uint8_t* b,
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int len, int step, uint32_t* out) {
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int i, offset = 0;
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for (i = 0; i < len; ++i) {
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out[i] = MakeARGB32(0xff, r[offset], g[offset], b[offset]);
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offset += step;
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}
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}
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void (*VP8PackARGB)(const uint8_t*, const uint8_t*, const uint8_t*,
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const uint8_t*, int, uint32_t*);
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void (*VP8PackRGB)(const uint8_t*, const uint8_t*, const uint8_t*,
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int, int, uint32_t*);
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extern void VP8EncDspARGBInitMIPSdspR2(void);
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extern void VP8EncDspARGBInitSSE2(void);
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static volatile VP8CPUInfo last_cpuinfo_used = (VP8CPUInfo)&last_cpuinfo_used;
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WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspARGBInit(void) {
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if (last_cpuinfo_used == VP8GetCPUInfo) return;
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VP8PackARGB = PackARGB;
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VP8PackRGB = PackRGB;
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// If defined, use CPUInfo() to overwrite some pointers with faster versions.
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if (VP8GetCPUInfo != NULL) {
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#if defined(WEBP_USE_SSE2)
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if (VP8GetCPUInfo(kSSE2)) {
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VP8EncDspARGBInitSSE2();
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}
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#endif
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#if defined(WEBP_USE_MIPS_DSP_R2)
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if (VP8GetCPUInfo(kMIPSdspR2)) {
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VP8EncDspARGBInitMIPSdspR2();
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}
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#endif
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}
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last_cpuinfo_used = VP8GetCPUInfo;
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}
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