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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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_CAPTURE_VIDEO_SHARED_MEMORY_BUFFER_TRACKER_H_ | 5 #ifndef MEDIA_CAPTURE_VIDEO_SHARED_MEMORY_BUFFER_TRACKER_H_ |
6 #define MEDIA_CAPTURE_VIDEO_SHARED_MEMORY_BUFFER_TRACKER_H_ | 6 #define MEDIA_CAPTURE_VIDEO_SHARED_MEMORY_BUFFER_TRACKER_H_ |
7 | 7 |
| 8 #include "media/capture/video/shared_memory_buffer_handle.h" |
8 #include "media/capture/video/video_capture_buffer_tracker.h" | 9 #include "media/capture/video/video_capture_buffer_tracker.h" |
9 | 10 |
10 namespace media { | 11 namespace media { |
11 | 12 |
12 class SharedMemoryBufferHandle; | |
13 | |
14 // Tracker specifics for SharedMemory. | 13 // Tracker specifics for SharedMemory. |
15 class SharedMemoryBufferTracker final : public VideoCaptureBufferTracker { | 14 class SharedMemoryBufferTracker final : public VideoCaptureBufferTracker { |
16 public: | 15 public: |
17 SharedMemoryBufferTracker(); | 16 SharedMemoryBufferTracker(); |
18 | 17 |
19 bool Init(const gfx::Size& dimensions, | 18 bool Init(const gfx::Size& dimensions, |
20 VideoPixelFormat format, | 19 VideoPixelFormat format, |
21 VideoPixelStorage storage_type, | 20 VideoPixelStorage storage_type, |
22 base::Lock* lock) override; | 21 base::Lock* lock) override; |
23 | 22 |
24 std::unique_ptr<VideoCaptureBufferHandle> GetMemoryMappedAccess() override; | 23 std::unique_ptr<VideoCaptureBufferHandle> GetMemoryMappedAccess() override; |
25 mojo::ScopedSharedBufferHandle GetHandleForTransit() override; | 24 mojo::ScopedSharedBufferHandle GetHandleForTransit() override; |
26 base::SharedMemoryHandle GetNonOwnedSharedMemoryHandleForLegacyIPC() override; | 25 base::SharedMemoryHandle GetNonOwnedSharedMemoryHandleForLegacyIPC() override; |
27 | 26 |
28 private: | 27 private: |
29 friend class SharedMemoryBufferHandle; | 28 friend class SharedMemoryBufferHandle; |
30 | 29 |
31 // The memory created to be shared with renderer processes. | 30 // The memory created to be shared with renderer processes. |
32 base::SharedMemory shared_memory_; | 31 base::SharedMemory shared_memory_; |
33 size_t mapped_size_; | 32 size_t mapped_size_; |
34 }; | 33 }; |
35 | 34 |
36 // A simple proxy that implements the BufferHandle interface, providing | |
37 // accessors to SharedMemTracker's memory and properties. | |
38 class SharedMemoryBufferHandle : public VideoCaptureBufferHandle { | |
39 public: | |
40 // |tracker| must outlive SimpleBufferHandle. This is ensured since a | |
41 // tracker is pinned until ownership of this SimpleBufferHandle is returned | |
42 // to VideoCaptureBufferPool. | |
43 explicit SharedMemoryBufferHandle(SharedMemoryBufferTracker* tracker); | |
44 ~SharedMemoryBufferHandle() override; | |
45 | |
46 size_t mapped_size() const override; | |
47 uint8_t* data() override; | |
48 const uint8_t* data() const override; | |
49 | |
50 private: | |
51 SharedMemoryBufferTracker* const tracker_; | |
52 }; | |
53 | |
54 } // namespace media | 35 } // namespace media |
55 | 36 |
56 #endif // MEDIA_CAPTURE_VIDEO_SHARED_MEMORY_BUFFER_TRACKER_H_ | 37 #endif // MEDIA_CAPTURE_VIDEO_SHARED_MEMORY_BUFFER_TRACKER_H_ |
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