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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 UI_GFX_GPU_MEMORY_BUFFER_H_ | 5 #ifndef UI_GFX_GPU_MEMORY_BUFFER_H_ |
6 #define UI_GFX_GPU_MEMORY_BUFFER_H_ | 6 #define UI_GFX_GPU_MEMORY_BUFFER_H_ |
7 | 7 |
8 #include "base/memory/shared_memory.h" | 8 #include "base/memory/shared_memory.h" |
9 #include "build/build_config.h" | 9 #include "build/build_config.h" |
10 #include "ui/gfx/gfx_export.h" | 10 #include "ui/gfx/gfx_export.h" |
11 | 11 |
12 #if defined(OS_ANDROID) | 12 #if defined(OS_ANDROID) |
13 #include <third_party/khronos/EGL/egl.h> | 13 #include <third_party/khronos/EGL/egl.h> |
14 #endif | 14 #endif |
15 | 15 |
16 namespace gfx { | 16 namespace gfx { |
17 | 17 |
18 enum GpuMemoryBufferType { | 18 enum GpuMemoryBufferType { |
19 EMPTY_BUFFER, | 19 EMPTY_BUFFER, |
20 SHARED_MEMORY_BUFFER, | 20 SHARED_MEMORY_BUFFER, |
21 EGL_CLIENT_BUFFER, | 21 EGL_CLIENT_BUFFER, |
| 22 FOOBAR_BUFFER, |
22 IO_SURFACE_BUFFER, | 23 IO_SURFACE_BUFFER, |
23 GPU_MEMORY_BUFFER_TYPE_LAST = IO_SURFACE_BUFFER | 24 GPU_MEMORY_BUFFER_TYPE_LAST = IO_SURFACE_BUFFER |
24 }; | 25 }; |
25 | 26 |
26 struct GpuMemoryBufferHandle { | 27 struct GpuMemoryBufferHandle { |
27 GpuMemoryBufferHandle() | 28 GpuMemoryBufferHandle() |
28 : type(EMPTY_BUFFER), | 29 : type(EMPTY_BUFFER), |
29 handle(base::SharedMemory::NULLHandle()) | 30 handle(base::SharedMemory::NULLHandle()) |
30 #if defined(OS_ANDROID) | 31 #if defined(OS_ANDROID) |
31 , native_buffer(NULL) | 32 , native_buffer(NULL) |
32 #endif | 33 #endif |
33 #if defined(OS_MACOSX) | 34 #if defined(OS_MACOSX) |
34 , io_surface_id(0) | 35 , io_surface_id(0) |
35 #endif | 36 #endif |
| 37 , foobar_id(0) |
36 { | 38 { |
37 } | 39 } |
38 bool is_null() const { return type == EMPTY_BUFFER; } | 40 bool is_null() const { return type == EMPTY_BUFFER; } |
39 GpuMemoryBufferType type; | 41 GpuMemoryBufferType type; |
40 base::SharedMemoryHandle handle; | 42 base::SharedMemoryHandle handle; |
41 #if defined(OS_ANDROID) | 43 #if defined(OS_ANDROID) |
42 EGLClientBuffer native_buffer; | 44 EGLClientBuffer native_buffer; |
43 #endif | 45 #endif |
44 #if defined(OS_MACOSX) | 46 #if defined(OS_MACOSX) |
45 uint32 io_surface_id; | 47 uint32 io_surface_id; |
46 #endif | 48 #endif |
47 | 49 uint32 foobar_id; |
48 }; | 50 }; |
49 | 51 |
50 // Interface for creating and accessing a zero-copy GPU memory buffer. | 52 // Interface for creating and accessing a zero-copy GPU memory buffer. |
51 // This design evolved from the generalization of GraphicBuffer API | 53 // This design evolved from the generalization of GraphicBuffer API |
52 // of Android framework. | 54 // of Android framework. |
53 // | 55 // |
54 // THREADING CONSIDERATIONS: | 56 // THREADING CONSIDERATIONS: |
55 // | 57 // |
56 // This interface is thread-safe. However, multiple threads mapping | 58 // This interface is thread-safe. However, multiple threads mapping |
57 // a buffer for Write or ReadOrWrite simultaneously may result in undefined | 59 // a buffer for Write or ReadOrWrite simultaneously may result in undefined |
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82 // Returns the stride in bytes for the buffer. | 84 // Returns the stride in bytes for the buffer. |
83 virtual uint32 GetStride() const = 0; | 85 virtual uint32 GetStride() const = 0; |
84 | 86 |
85 // Returns a platform specific handle for this buffer. | 87 // Returns a platform specific handle for this buffer. |
86 virtual GpuMemoryBufferHandle GetHandle() const = 0; | 88 virtual GpuMemoryBufferHandle GetHandle() const = 0; |
87 }; | 89 }; |
88 | 90 |
89 } // namespace gfx | 91 } // namespace gfx |
90 | 92 |
91 #endif // UI_GFX_GPU_MEMORY_BUFFER_H_ | 93 #endif // UI_GFX_GPU_MEMORY_BUFFER_H_ |
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