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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 "ui/gfx/buffer_format_util.h" | 5 #include "ui/gfx/buffer_format_util.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 #include "base/numerics/safe_math.h" | 9 #include "base/numerics/safe_math.h" |
10 | 10 |
11 namespace gfx { | 11 namespace gfx { |
12 namespace { | 12 namespace { |
13 | 13 |
14 const BufferFormat kBufferFormats[] = { | 14 const BufferFormat kBufferFormats[] = {BufferFormat::ATC, |
15 BufferFormat::ATC, BufferFormat::ATCIA, | 15 BufferFormat::ATCIA, |
16 BufferFormat::DXT1, BufferFormat::DXT5, | 16 BufferFormat::DXT1, |
17 BufferFormat::ETC1, BufferFormat::R_8, | 17 BufferFormat::DXT5, |
18 BufferFormat::BGR_565, BufferFormat::RGBA_4444, | 18 BufferFormat::ETC1, |
19 BufferFormat::RGBX_8888, BufferFormat::RGBA_8888, | 19 BufferFormat::R_8, |
20 BufferFormat::BGRX_8888, BufferFormat::BGRA_8888, | 20 BufferFormat::RG_88, |
21 BufferFormat::UYVY_422, BufferFormat::YUV_420_BIPLANAR, | 21 BufferFormat::BGR_565, |
22 BufferFormat::YVU_420}; | 22 BufferFormat::RGBA_4444, |
| 23 BufferFormat::RGBX_8888, |
| 24 BufferFormat::RGBA_8888, |
| 25 BufferFormat::BGRX_8888, |
| 26 BufferFormat::BGRA_8888, |
| 27 BufferFormat::UYVY_422, |
| 28 BufferFormat::YUV_420_BIPLANAR, |
| 29 BufferFormat::YVU_420}; |
23 | 30 |
24 static_assert(arraysize(kBufferFormats) == | 31 static_assert(arraysize(kBufferFormats) == |
25 (static_cast<int>(BufferFormat::LAST) + 1), | 32 (static_cast<int>(BufferFormat::LAST) + 1), |
26 "BufferFormat::LAST must be last value of kBufferFormats"); | 33 "BufferFormat::LAST must be last value of kBufferFormats"); |
27 | 34 |
28 | 35 |
29 bool RowSizeForBufferFormatChecked( | 36 bool RowSizeForBufferFormatChecked( |
30 size_t width, BufferFormat format, size_t plane, size_t* size_in_bytes) { | 37 size_t width, BufferFormat format, size_t plane, size_t* size_in_bytes) { |
31 base::CheckedNumeric<size_t> checked_size = width; | 38 base::CheckedNumeric<size_t> checked_size = width; |
32 switch (format) { | 39 switch (format) { |
33 case BufferFormat::ATCIA: | 40 case BufferFormat::ATCIA: |
34 case BufferFormat::DXT5: | 41 case BufferFormat::DXT5: |
35 DCHECK_EQ(0u, plane); | 42 DCHECK_EQ(0u, plane); |
36 *size_in_bytes = width; | 43 *size_in_bytes = width; |
37 return true; | 44 return true; |
38 case BufferFormat::ATC: | 45 case BufferFormat::ATC: |
39 case BufferFormat::DXT1: | 46 case BufferFormat::DXT1: |
40 case BufferFormat::ETC1: | 47 case BufferFormat::ETC1: |
41 DCHECK_EQ(0u, plane); | 48 DCHECK_EQ(0u, plane); |
42 DCHECK_EQ(0u, width % 2); | 49 DCHECK_EQ(0u, width % 2); |
43 *size_in_bytes = width / 2; | 50 *size_in_bytes = width / 2; |
44 return true; | 51 return true; |
45 case BufferFormat::R_8: | 52 case BufferFormat::R_8: |
46 checked_size += 3; | 53 checked_size += 3; |
47 if (!checked_size.IsValid()) | 54 if (!checked_size.IsValid()) |
48 return false; | 55 return false; |
49 *size_in_bytes = checked_size.ValueOrDie() & ~0x3; | 56 *size_in_bytes = checked_size.ValueOrDie() & ~0x3; |
50 return true; | 57 return true; |
| 58 case BufferFormat::RG_88: |
51 case BufferFormat::BGR_565: | 59 case BufferFormat::BGR_565: |
52 case BufferFormat::RGBA_4444: | 60 case BufferFormat::RGBA_4444: |
53 case BufferFormat::UYVY_422: | 61 case BufferFormat::UYVY_422: |
54 checked_size *= 2; | 62 checked_size *= 2; |
55 if (!checked_size.IsValid()) | 63 if (!checked_size.IsValid()) |
56 return false; | 64 return false; |
57 *size_in_bytes = checked_size.ValueOrDie(); | 65 *size_in_bytes = checked_size.ValueOrDie(); |
58 return true; | 66 return true; |
59 case BufferFormat::BGRX_8888: | 67 case BufferFormat::BGRX_8888: |
60 case BufferFormat::RGBX_8888: | 68 case BufferFormat::RGBX_8888: |
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86 } | 94 } |
87 | 95 |
88 size_t NumberOfPlanesForBufferFormat(BufferFormat format) { | 96 size_t NumberOfPlanesForBufferFormat(BufferFormat format) { |
89 switch (format) { | 97 switch (format) { |
90 case BufferFormat::ATC: | 98 case BufferFormat::ATC: |
91 case BufferFormat::ATCIA: | 99 case BufferFormat::ATCIA: |
92 case BufferFormat::DXT1: | 100 case BufferFormat::DXT1: |
93 case BufferFormat::DXT5: | 101 case BufferFormat::DXT5: |
94 case BufferFormat::ETC1: | 102 case BufferFormat::ETC1: |
95 case BufferFormat::R_8: | 103 case BufferFormat::R_8: |
| 104 case BufferFormat::RG_88: |
96 case BufferFormat::BGR_565: | 105 case BufferFormat::BGR_565: |
97 case BufferFormat::RGBA_4444: | 106 case BufferFormat::RGBA_4444: |
98 case BufferFormat::RGBX_8888: | 107 case BufferFormat::RGBX_8888: |
99 case BufferFormat::RGBA_8888: | 108 case BufferFormat::RGBA_8888: |
100 case BufferFormat::BGRX_8888: | 109 case BufferFormat::BGRX_8888: |
101 case BufferFormat::BGRA_8888: | 110 case BufferFormat::BGRA_8888: |
102 case BufferFormat::UYVY_422: | 111 case BufferFormat::UYVY_422: |
103 return 1; | 112 return 1; |
104 case BufferFormat::YUV_420_BIPLANAR: | 113 case BufferFormat::YUV_420_BIPLANAR: |
105 return 2; | 114 return 2; |
106 case BufferFormat::YVU_420: | 115 case BufferFormat::YVU_420: |
107 return 3; | 116 return 3; |
108 } | 117 } |
109 NOTREACHED(); | 118 NOTREACHED(); |
110 return 0; | 119 return 0; |
111 } | 120 } |
112 | 121 |
113 size_t SubsamplingFactorForBufferFormat(BufferFormat format, size_t plane) { | 122 size_t SubsamplingFactorForBufferFormat(BufferFormat format, size_t plane) { |
114 switch (format) { | 123 switch (format) { |
115 case BufferFormat::ATC: | 124 case BufferFormat::ATC: |
116 case BufferFormat::ATCIA: | 125 case BufferFormat::ATCIA: |
117 case BufferFormat::DXT1: | 126 case BufferFormat::DXT1: |
118 case BufferFormat::DXT5: | 127 case BufferFormat::DXT5: |
119 case BufferFormat::ETC1: | 128 case BufferFormat::ETC1: |
120 case BufferFormat::R_8: | 129 case BufferFormat::R_8: |
| 130 case BufferFormat::RG_88: |
121 case BufferFormat::BGR_565: | 131 case BufferFormat::BGR_565: |
122 case BufferFormat::RGBA_4444: | 132 case BufferFormat::RGBA_4444: |
123 case BufferFormat::RGBX_8888: | 133 case BufferFormat::RGBX_8888: |
124 case BufferFormat::RGBA_8888: | 134 case BufferFormat::RGBA_8888: |
125 case BufferFormat::BGRX_8888: | 135 case BufferFormat::BGRX_8888: |
126 case BufferFormat::BGRA_8888: | 136 case BufferFormat::BGRA_8888: |
127 case BufferFormat::UYVY_422: | 137 case BufferFormat::UYVY_422: |
128 return 1; | 138 return 1; |
129 case BufferFormat::YVU_420: { | 139 case BufferFormat::YVU_420: { |
130 static size_t factor[] = {1, 2, 2}; | 140 static size_t factor[] = {1, 2, 2}; |
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181 BufferFormat format, | 191 BufferFormat format, |
182 size_t plane) { | 192 size_t plane) { |
183 DCHECK_LT(plane, gfx::NumberOfPlanesForBufferFormat(format)); | 193 DCHECK_LT(plane, gfx::NumberOfPlanesForBufferFormat(format)); |
184 switch (format) { | 194 switch (format) { |
185 case BufferFormat::ATC: | 195 case BufferFormat::ATC: |
186 case BufferFormat::ATCIA: | 196 case BufferFormat::ATCIA: |
187 case BufferFormat::DXT1: | 197 case BufferFormat::DXT1: |
188 case BufferFormat::DXT5: | 198 case BufferFormat::DXT5: |
189 case BufferFormat::ETC1: | 199 case BufferFormat::ETC1: |
190 case BufferFormat::R_8: | 200 case BufferFormat::R_8: |
| 201 case BufferFormat::RG_88: |
191 case BufferFormat::BGR_565: | 202 case BufferFormat::BGR_565: |
192 case BufferFormat::RGBA_4444: | 203 case BufferFormat::RGBA_4444: |
193 case BufferFormat::RGBX_8888: | 204 case BufferFormat::RGBX_8888: |
194 case BufferFormat::RGBA_8888: | 205 case BufferFormat::RGBA_8888: |
195 case BufferFormat::BGRX_8888: | 206 case BufferFormat::BGRX_8888: |
196 case BufferFormat::BGRA_8888: | 207 case BufferFormat::BGRA_8888: |
197 case BufferFormat::UYVY_422: | 208 case BufferFormat::UYVY_422: |
198 return 0; | 209 return 0; |
199 case BufferFormat::YVU_420: { | 210 case BufferFormat::YVU_420: { |
200 static size_t offset_in_2x2_sub_sampling_sizes[] = {0, 4, 5}; | 211 static size_t offset_in_2x2_sub_sampling_sizes[] = {0, 4, 5}; |
201 DCHECK_LT(plane, arraysize(offset_in_2x2_sub_sampling_sizes)); | 212 DCHECK_LT(plane, arraysize(offset_in_2x2_sub_sampling_sizes)); |
202 return offset_in_2x2_sub_sampling_sizes[plane] * | 213 return offset_in_2x2_sub_sampling_sizes[plane] * |
203 (size.width() / 2 + size.height() / 2); | 214 (size.width() / 2 + size.height() / 2); |
204 } | 215 } |
205 case gfx::BufferFormat::YUV_420_BIPLANAR: { | 216 case gfx::BufferFormat::YUV_420_BIPLANAR: { |
206 static size_t offset_in_2x2_sub_sampling_sizes[] = {0, 4}; | 217 static size_t offset_in_2x2_sub_sampling_sizes[] = {0, 4}; |
207 DCHECK_LT(plane, arraysize(offset_in_2x2_sub_sampling_sizes)); | 218 DCHECK_LT(plane, arraysize(offset_in_2x2_sub_sampling_sizes)); |
208 return offset_in_2x2_sub_sampling_sizes[plane] * | 219 return offset_in_2x2_sub_sampling_sizes[plane] * |
209 (size.width() / 2 + size.height() / 2); | 220 (size.width() / 2 + size.height() / 2); |
210 } | 221 } |
211 } | 222 } |
212 NOTREACHED(); | 223 NOTREACHED(); |
213 return 0; | 224 return 0; |
214 } | 225 } |
215 | 226 |
216 } // namespace gfx | 227 } // namespace gfx |
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