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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 #ifndef MEDIA_BASE_YUV_CONVERT_H_ | 5 #ifndef MEDIA_BASE_YUV_CONVERT_H_ |
6 #define MEDIA_BASE_YUV_CONVERT_H_ | 6 #define MEDIA_BASE_YUV_CONVERT_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 | 9 |
| 10 // Visual Studio 2010 does not support MMX intrinsics on x64. |
| 11 // Some win64 yuv_convert code paths use SSE+MMX yasm, so without rewriting |
| 12 // them, we use yasm EmptyRegisterState_MMX in place of _mm_empty() or |
| 13 // hide the versions implemented with heavy use of MMX intrinsics. |
| 14 // TODO(wolenetz): Use MMX intrinsics when compiling win64 with Visual |
| 15 // Studio 2012? http://crbug.com/173450 |
| 16 #if !(defined(ARCH_CPU_X86_64) && defined(COMPILER_MSVC)) |
| 17 #define MEDIA_MMX_INTRINSICS_AVAILABLE |
| 18 #endif |
| 19 |
10 namespace media { | 20 namespace media { |
11 | 21 |
12 // Type of YUV surface. | 22 // Type of YUV surface. |
13 // The value of these enums matter as they are used to shift vertical indices. | 23 // The value of these enums matter as they are used to shift vertical indices. |
14 enum YUVType { | 24 enum YUVType { |
15 YV16 = 0, // YV16 is half width and full height chroma channels. | 25 YV16 = 0, // YV16 is half width and full height chroma channels. |
16 YV12 = 1, // YV12 is half width and half height chroma channels. | 26 YV12 = 1, // YV12 is half width and half height chroma channels. |
17 }; | 27 }; |
18 | 28 |
19 // Mirror means flip the image horizontally, as in looking in a mirror. | 29 // Mirror means flip the image horizontally, as in looking in a mirror. |
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119 uint8* vplane, | 129 uint8* vplane, |
120 int width, | 130 int width, |
121 int height); | 131 int height); |
122 | 132 |
123 // Empty SIMD register state after calling optimized scaler functions. | 133 // Empty SIMD register state after calling optimized scaler functions. |
124 void EmptyRegisterState(); | 134 void EmptyRegisterState(); |
125 | 135 |
126 } // namespace media | 136 } // namespace media |
127 | 137 |
128 #endif // MEDIA_BASE_YUV_CONVERT_H_ | 138 #endif // MEDIA_BASE_YUV_CONVERT_H_ |
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