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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 MEDIA_VIDEO_CAPTURE_FILE_VIDEO_CAPTURE_DEVICE_H_ | 5 #ifndef MEDIA_VIDEO_CAPTURE_FILE_VIDEO_CAPTURE_DEVICE_H_ | 
| 6 #define MEDIA_VIDEO_CAPTURE_FILE_VIDEO_CAPTURE_DEVICE_H_ | 6 #define MEDIA_VIDEO_CAPTURE_FILE_VIDEO_CAPTURE_DEVICE_H_ | 
| 7 | 7 | 
| 8 #include <string> | 8 #include <string> | 
| 9 | 9 | 
| 10 #include "base/files/file.h" | 10 #include "base/files/file.h" | 
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| 31   static base::File OpenFileForRead(const base::FilePath& file_path); | 31   static base::File OpenFileForRead(const base::FilePath& file_path); | 
| 32 | 32 | 
| 33   // Constructor of the class, with a fully qualified file path as input, which | 33   // Constructor of the class, with a fully qualified file path as input, which | 
| 34   // represents the Y4M video file to stream repeatedly. | 34   // represents the Y4M video file to stream repeatedly. | 
| 35   explicit FileVideoCaptureDevice(const base::FilePath& file_path); | 35   explicit FileVideoCaptureDevice(const base::FilePath& file_path); | 
| 36 | 36 | 
| 37   // VideoCaptureDevice implementation, class methods. | 37   // VideoCaptureDevice implementation, class methods. | 
| 38   virtual ~FileVideoCaptureDevice(); | 38   virtual ~FileVideoCaptureDevice(); | 
| 39   virtual void AllocateAndStart( | 39   virtual void AllocateAndStart( | 
| 40       const VideoCaptureParams& params, | 40       const VideoCaptureParams& params, | 
| 41       scoped_ptr<VideoCaptureDevice::Client> client) OVERRIDE; | 41       scoped_ptr<VideoCaptureDevice::Client> client) override; | 
| 42   virtual void StopAndDeAllocate() OVERRIDE; | 42   virtual void StopAndDeAllocate() override; | 
| 43 | 43 | 
| 44  private: | 44  private: | 
| 45   // Returns size in bytes of an I420 frame, not including possible paddings, | 45   // Returns size in bytes of an I420 frame, not including possible paddings, | 
| 46   // defined by |capture_format_|. | 46   // defined by |capture_format_|. | 
| 47   int CalculateFrameSize(); | 47   int CalculateFrameSize(); | 
| 48 | 48 | 
| 49   // Called on the |capture_thread_|. | 49   // Called on the |capture_thread_|. | 
| 50   void OnAllocateAndStart(const VideoCaptureParams& params, | 50   void OnAllocateAndStart(const VideoCaptureParams& params, | 
| 51                           scoped_ptr<Client> client); | 51                           scoped_ptr<Client> client); | 
| 52   void OnStopAndDeAllocate(); | 52   void OnStopAndDeAllocate(); | 
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| 68   int frame_size_; | 68   int frame_size_; | 
| 69   int64 current_byte_index_; | 69   int64 current_byte_index_; | 
| 70   int64 first_frame_byte_index_; | 70   int64 first_frame_byte_index_; | 
| 71 | 71 | 
| 72   DISALLOW_COPY_AND_ASSIGN(FileVideoCaptureDevice); | 72   DISALLOW_COPY_AND_ASSIGN(FileVideoCaptureDevice); | 
| 73 }; | 73 }; | 
| 74 | 74 | 
| 75 }  // namespace media | 75 }  // namespace media | 
| 76 | 76 | 
| 77 #endif  // MEDIA_VIDEO_CAPTURE_FILE_VIDEO_CAPTURE_DEVICE_H_ | 77 #endif  // MEDIA_VIDEO_CAPTURE_FILE_VIDEO_CAPTURE_DEVICE_H_ | 
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