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Side by Side Diff: media/base/simd/convert_rgb_to_yuv_c.cc

Issue 1534273002: Switch to standard integer types in media/. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: more Created 5 years ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "media/base/simd/convert_rgb_to_yuv.h" 5 #include "media/base/simd/convert_rgb_to_yuv.h"
6 6
7 namespace media { 7 namespace media {
8 8
9 static int clip_byte(int x) { 9 static int clip_byte(int x) {
10 if (x > 255) 10 if (x > 255)
11 return 255; 11 return 255;
12 else if (x < 0) 12 else if (x < 0)
13 return 0; 13 return 0;
14 else 14 else
15 return x; 15 return x;
16 } 16 }
17 17
18 void ConvertRGB32ToYUV_C(const uint8* rgbframe, 18 void ConvertRGB32ToYUV_C(const uint8_t* rgbframe,
19 uint8* yplane, 19 uint8_t* yplane,
20 uint8* uplane, 20 uint8_t* uplane,
21 uint8* vplane, 21 uint8_t* vplane,
22 int width, 22 int width,
23 int height, 23 int height,
24 int rgbstride, 24 int rgbstride,
25 int ystride, 25 int ystride,
26 int uvstride) { 26 int uvstride) {
27 #if defined(OS_ANDROID) 27 #if defined(OS_ANDROID)
28 const int r = 0; 28 const int r = 0;
29 const int g = 1; 29 const int g = 1;
30 const int b = 2; 30 const int b = 2;
31 #else 31 #else
32 const int r = 2; 32 const int r = 2;
33 const int g = 1; 33 const int g = 1;
34 const int b = 0; 34 const int b = 0;
35 #endif 35 #endif
36 36
37 for (int i = 0; i < height; ++i) { 37 for (int i = 0; i < height; ++i) {
38 for (int j = 0; j < width; ++j) { 38 for (int j = 0; j < width; ++j) {
39 // Since the input pixel format is RGB32, there are 4 bytes per pixel. 39 // Since the input pixel format is RGB32, there are 4 bytes per pixel.
40 const uint8* pixel = rgbframe + 4 * j; 40 const uint8_t* pixel = rgbframe + 4 * j;
41 yplane[j] = clip_byte(((pixel[r] * 66 + pixel[g] * 129 + 41 yplane[j] = clip_byte(((pixel[r] * 66 + pixel[g] * 129 +
42 pixel[b] * 25 + 128) >> 8) + 16); 42 pixel[b] * 25 + 128) >> 8) + 16);
43 if (i % 2 == 0 && j % 2 == 0) { 43 if (i % 2 == 0 && j % 2 == 0) {
44 uplane[j / 2] = clip_byte(((pixel[r] * -38 + pixel[g] * -74 + 44 uplane[j / 2] = clip_byte(((pixel[r] * -38 + pixel[g] * -74 +
45 pixel[b] * 112 + 128) >> 8) + 128); 45 pixel[b] * 112 + 128) >> 8) + 128);
46 vplane[j / 2] = clip_byte(((pixel[r] * 112 + pixel[g] * -94 + 46 vplane[j / 2] = clip_byte(((pixel[r] * 112 + pixel[g] * -94 +
47 pixel[b] * -18 + 128) >> 8) + 128); 47 pixel[b] * -18 + 128) >> 8) + 128);
48 } 48 }
49 } 49 }
50 rgbframe += rgbstride; 50 rgbframe += rgbstride;
51 yplane += ystride; 51 yplane += ystride;
52 if (i % 2 == 0) { 52 if (i % 2 == 0) {
53 uplane += uvstride; 53 uplane += uvstride;
54 vplane += uvstride; 54 vplane += uvstride;
55 } 55 }
56 } 56 }
57 } 57 }
58 58
59 void ConvertRGB24ToYUV_C(const uint8* rgbframe, 59 void ConvertRGB24ToYUV_C(const uint8_t* rgbframe,
60 uint8* yplane, 60 uint8_t* yplane,
61 uint8* uplane, 61 uint8_t* uplane,
62 uint8* vplane, 62 uint8_t* vplane,
63 int width, 63 int width,
64 int height, 64 int height,
65 int rgbstride, 65 int rgbstride,
66 int ystride, 66 int ystride,
67 int uvstride) { 67 int uvstride) {
68 for (int i = 0; i < height; ++i) { 68 for (int i = 0; i < height; ++i) {
69 for (int j = 0; j < width; ++j) { 69 for (int j = 0; j < width; ++j) {
70 // Since the input pixel format is RGB24, there are 3 bytes per pixel. 70 // Since the input pixel format is RGB24, there are 3 bytes per pixel.
71 const uint8* pixel = rgbframe + 3 * j; 71 const uint8_t* pixel = rgbframe + 3 * j;
72 yplane[j] = clip_byte(((pixel[2] * 66 + pixel[1] * 129 + 72 yplane[j] = clip_byte(((pixel[2] * 66 + pixel[1] * 129 +
73 pixel[0] * 25 + 128) >> 8) + 16); 73 pixel[0] * 25 + 128) >> 8) + 16);
74 if (i % 2 == 0 && j % 2 == 0) { 74 if (i % 2 == 0 && j % 2 == 0) {
75 uplane[j / 2] = clip_byte(((pixel[2] * -38 + pixel[1] * -74 + 75 uplane[j / 2] = clip_byte(((pixel[2] * -38 + pixel[1] * -74 +
76 pixel[0] * 112 + 128) >> 8) + 128); 76 pixel[0] * 112 + 128) >> 8) + 128);
77 vplane[j / 2] = clip_byte(((pixel[2] * 112 + pixel[1] * -94 + 77 vplane[j / 2] = clip_byte(((pixel[2] * 112 + pixel[1] * -94 +
78 pixel[0] * -18 + 128) >> 8) + 128); 78 pixel[0] * -18 + 128) >> 8) + 128);
79 } 79 }
80 } 80 }
81 81
82 rgbframe += rgbstride; 82 rgbframe += rgbstride;
83 yplane += ystride; 83 yplane += ystride;
84 if (i % 2 == 0) { 84 if (i % 2 == 0) {
85 uplane += uvstride; 85 uplane += uvstride;
86 vplane += uvstride; 86 vplane += uvstride;
87 } 87 }
88 } 88 }
89 } 89 }
90 90
91 } // namespace media 91 } // namespace media
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