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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 // Implementation of a fake VideoCaptureDevice class. Used for testing other | 5 // Implementation of a fake VideoCaptureDevice class. Used for testing other |
| 6 // video capture classes when no real hardware is available. | 6 // video capture classes when no real hardware is available. |
| 7 | 7 |
| 8 #ifndef MEDIA_VIDEO_CAPTURE_FAKE_VIDEO_CAPTURE_DEVICE_H_ | 8 #ifndef MEDIA_VIDEO_CAPTURE_FAKE_VIDEO_CAPTURE_DEVICE_H_ |
| 9 #define MEDIA_VIDEO_CAPTURE_FAKE_VIDEO_CAPTURE_DEVICE_H_ | 9 #define MEDIA_VIDEO_CAPTURE_FAKE_VIDEO_CAPTURE_DEVICE_H_ |
| 10 | 10 |
| 11 #include <stdint.h> | 11 #include <stdint.h> |
| 12 | 12 |
| 13 #include <string> | 13 #include <string> |
| 14 | 14 |
| 15 #include "base/atomicops.h" | 15 #include "base/atomicops.h" |
| 16 #include "base/macros.h" | 16 #include "base/macros.h" |
| 17 #include "base/memory/scoped_ptr.h" | 17 #include "base/memory/scoped_ptr.h" |
| 18 #include "base/memory/weak_ptr.h" | 18 #include "base/memory/weak_ptr.h" |
| 19 #include "base/threading/thread.h" | |
| 20 #include "base/threading/thread_checker.h" | 19 #include "base/threading/thread_checker.h" |
| 21 #include "base/time/time.h" | 20 #include "base/time/time.h" |
| 22 #include "media/capture/video/video_capture_device.h" | 21 #include "media/capture/video/video_capture_device.h" |
| 23 | 22 |
| 24 namespace media { | 23 namespace media { |
| 25 | 24 |
| 26 class MEDIA_EXPORT FakeVideoCaptureDevice : public VideoCaptureDevice { | 25 class MEDIA_EXPORT FakeVideoCaptureDevice : public VideoCaptureDevice { |
| 27 public: | 26 public: |
| 28 enum class BufferOwnership { | 27 enum class BufferOwnership { |
| 29 OWN_BUFFERS, | 28 OWN_BUFFERS, |
| 30 CLIENT_BUFFERS, | 29 CLIENT_BUFFERS, |
| 31 }; | 30 }; |
| 32 | 31 |
| 33 enum class BufferPlanarity { | |
| 34 PACKED, | |
| 35 TRIPLANAR, | |
| 36 }; | |
| 37 | |
| 38 FakeVideoCaptureDevice(BufferOwnership buffer_ownership, | 32 FakeVideoCaptureDevice(BufferOwnership buffer_ownership, |
| 39 BufferPlanarity planarity); | |
| 40 FakeVideoCaptureDevice(BufferOwnership buffer_ownership, | |
| 41 BufferPlanarity planarity, | |
| 42 float fake_capture_rate); | 33 float fake_capture_rate); |
| 43 ~FakeVideoCaptureDevice() override; | 34 ~FakeVideoCaptureDevice() override; |
| 44 | 35 |
| 45 // VideoCaptureDevice implementation. | 36 // VideoCaptureDevice implementation. |
| 46 void AllocateAndStart(const VideoCaptureParams& params, | 37 void AllocateAndStart(const VideoCaptureParams& params, |
| 47 scoped_ptr<Client> client) override; | 38 scoped_ptr<Client> client) override; |
| 48 void StopAndDeAllocate() override; | 39 void StopAndDeAllocate() override; |
| 49 | 40 |
| 50 private: | 41 private: |
| 51 void CaptureUsingOwnBuffers(base::TimeTicks expected_execution_time); | 42 void CaptureUsingOwnBuffers(base::TimeTicks expected_execution_time); |
| 52 void CaptureUsingClientBuffers(base::TimeTicks expected_execution_time); | 43 void CaptureUsingClientBuffers(base::TimeTicks expected_execution_time); |
| 53 void BeepAndScheduleNextCapture( | 44 void BeepAndScheduleNextCapture( |
| 54 base::TimeTicks expected_execution_time, | 45 base::TimeTicks expected_execution_time, |
| 55 const base::Callback<void(base::TimeTicks)>& next_capture); | 46 const base::Callback<void(base::TimeTicks)>& next_capture); |
| 56 | 47 |
| 57 // |thread_checker_| is used to check that all methods are called in the | 48 // |thread_checker_| is used to check that all methods are called in the |
| 58 // correct thread that owns the object. | 49 // correct thread that owns the object. |
| 59 base::ThreadChecker thread_checker_; | 50 base::ThreadChecker thread_checker_; |
| 60 | 51 |
| 61 const BufferOwnership buffer_ownership_; | 52 const BufferOwnership buffer_ownership_; |
| 62 const BufferPlanarity planarity_; | |
| 63 // Frame rate of the fake video device. | 53 // Frame rate of the fake video device. |
| 64 const float fake_capture_rate_; | 54 const float fake_capture_rate_; |
| 65 | 55 |
| 66 scoped_ptr<VideoCaptureDevice::Client> client_; | 56 scoped_ptr<VideoCaptureDevice::Client> client_; |
| 67 // |fake_frame_| is used for capturing on Own Buffers. | 57 // |fake_frame_| is used for capturing on Own Buffers. |
| 68 scoped_ptr<uint8_t[]> fake_frame_; | 58 scoped_ptr<uint8_t[]> fake_frame_; |
| 69 // Time when the next beep occurs. | 59 // Time when the next beep occurs. |
| 70 base::TimeDelta beep_time_; | 60 base::TimeDelta beep_time_; |
| 71 // Time since the fake video started rendering frames. | 61 // Time since the fake video started rendering frames. |
| 72 base::TimeDelta elapsed_time_; | 62 base::TimeDelta elapsed_time_; |
| 73 VideoCaptureFormat capture_format_; | 63 VideoCaptureFormat capture_format_; |
| 74 | 64 |
| 75 // FakeVideoCaptureDevice post tasks to itself for frame construction and | 65 // FakeVideoCaptureDevice post tasks to itself for frame construction and |
| 76 // needs to deal with asynchronous StopAndDeallocate(). | 66 // needs to deal with asynchronous StopAndDeallocate(). |
| 77 base::WeakPtrFactory<FakeVideoCaptureDevice> weak_factory_; | 67 base::WeakPtrFactory<FakeVideoCaptureDevice> weak_factory_; |
| 78 | 68 |
| 79 DISALLOW_COPY_AND_ASSIGN(FakeVideoCaptureDevice); | 69 DISALLOW_COPY_AND_ASSIGN(FakeVideoCaptureDevice); |
| 80 }; | 70 }; |
| 81 | 71 |
| 82 } // namespace media | 72 } // namespace media |
| 83 | 73 |
| 84 #endif // MEDIA_VIDEO_CAPTURE_FAKE_VIDEO_CAPTURE_DEVICE_H_ | 74 #endif // MEDIA_VIDEO_CAPTURE_FAKE_VIDEO_CAPTURE_DEVICE_H_ |
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