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@imgtec.com)
13
14#include "./dsp.h"
15
16static 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
20static 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
28static 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
37void (*VP8PackARGB)(const uint8_t*, const uint8_t*, const uint8_t*,
38 const uint8_t*, int, uint32_t*);
39void (*VP8PackRGB)(const uint8_t*, const uint8_t*, const uint8_t*,
40 int, int, uint32_t*);
41
42extern void VP8EncDspARGBInitMIPSdspR2(void);
43extern void VP8EncDspARGBInitSSE2(void);
44
45static volatile VP8CPUInfo argb_last_cpuinfo_used =
46 (VP8CPUInfo)&argb_last_cpuinfo_used;
47
48WEBP_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