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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" | |
9 #include "media/capture/video/video_capture_buffer_tracker.h" | 8 #include "media/capture/video/video_capture_buffer_tracker.h" |
10 | 9 |
11 namespace media { | 10 namespace media { |
12 | 11 |
| 12 class SharedMemoryBufferHandle; |
| 13 |
13 // Tracker specifics for SharedMemory. | 14 // Tracker specifics for SharedMemory. |
14 class SharedMemoryBufferTracker final : public VideoCaptureBufferTracker { | 15 class SharedMemoryBufferTracker final : public VideoCaptureBufferTracker { |
15 public: | 16 public: |
16 SharedMemoryBufferTracker(); | 17 SharedMemoryBufferTracker(); |
17 | 18 |
18 bool Init(const gfx::Size& dimensions, | 19 bool Init(const gfx::Size& dimensions, |
19 VideoPixelFormat format, | 20 VideoPixelFormat format, |
20 VideoPixelStorage storage_type, | 21 VideoPixelStorage storage_type, |
21 base::Lock* lock) override; | 22 base::Lock* lock) override; |
22 | 23 |
23 std::unique_ptr<VideoCaptureBufferHandle> GetMemoryMappedAccess() override; | 24 std::unique_ptr<VideoCaptureBufferHandle> GetMemoryMappedAccess() override; |
24 mojo::ScopedSharedBufferHandle GetHandleForTransit() override; | 25 mojo::ScopedSharedBufferHandle GetHandleForTransit() override; |
25 base::SharedMemoryHandle GetNonOwnedSharedMemoryHandleForLegacyIPC() override; | 26 base::SharedMemoryHandle GetNonOwnedSharedMemoryHandleForLegacyIPC() override; |
26 | 27 |
27 private: | 28 private: |
28 friend class SharedMemoryBufferHandle; | 29 friend class SharedMemoryBufferHandle; |
29 | 30 |
30 // The memory created to be shared with renderer processes. | 31 // The memory created to be shared with renderer processes. |
31 base::SharedMemory shared_memory_; | 32 base::SharedMemory shared_memory_; |
32 size_t mapped_size_; | 33 size_t mapped_size_; |
33 }; | 34 }; |
34 | 35 |
| 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 |
35 } // namespace media | 54 } // namespace media |
36 | 55 |
37 #endif // MEDIA_CAPTURE_VIDEO_SHARED_MEMORY_BUFFER_TRACKER_H_ | 56 #endif // MEDIA_CAPTURE_VIDEO_SHARED_MEMORY_BUFFER_TRACKER_H_ |
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