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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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_FILTERS_FILE_DATA_SOURCE_H_ | 5 #ifndef MEDIA_FILTERS_FILE_DATA_SOURCE_H_ |
| 6 #define MEDIA_FILTERS_FILE_DATA_SOURCE_H_ | 6 #define MEDIA_FILTERS_FILE_DATA_SOURCE_H_ |
| 7 | 7 |
| 8 #include <string> | 8 #include <string> |
| 9 | 9 |
| 10 #include "base/gtest_prod_util.h" |
| 10 #include "base/lock.h" | 11 #include "base/lock.h" |
| 11 #include "media/base/filters.h" | 12 #include "media/base/filters.h" |
| 12 #include "testing/gtest/include/gtest/gtest_prod.h" | |
| 13 | 13 |
| 14 namespace media { | 14 namespace media { |
| 15 | 15 |
| 16 // Basic data source that treats the URL as a file path, and uses the file | 16 // Basic data source that treats the URL as a file path, and uses the file |
| 17 // system to read data for a media pipeline. | 17 // system to read data for a media pipeline. |
| 18 class FileDataSource : public DataSource { | 18 class FileDataSource : public DataSource { |
| 19 public: | 19 public: |
| 20 // Public method to get a filter factory for the FileDataSource. | 20 // Public method to get a filter factory for the FileDataSource. |
| 21 static FilterFactory* CreateFactory() { | 21 static FilterFactory* CreateFactory() { |
| 22 return new FilterFactoryImpl0<FileDataSource>(); | 22 return new FilterFactoryImpl0<FileDataSource>(); |
| 23 } | 23 } |
| 24 | 24 |
| 25 // Implementation of MediaFilter. | 25 // Implementation of MediaFilter. |
| 26 virtual void Stop(FilterCallback* callback); | 26 virtual void Stop(FilterCallback* callback); |
| 27 | 27 |
| 28 // Implementation of DataSource. | 28 // Implementation of DataSource. |
| 29 virtual void Initialize(const std::string& url, FilterCallback* callback); | 29 virtual void Initialize(const std::string& url, FilterCallback* callback); |
| 30 virtual const MediaFormat& media_format(); | 30 virtual const MediaFormat& media_format(); |
| 31 virtual void Read(int64 position, size_t size, uint8* data, | 31 virtual void Read(int64 position, size_t size, uint8* data, |
| 32 ReadCallback* read_callback); | 32 ReadCallback* read_callback); |
| 33 virtual bool GetSize(int64* size_out); | 33 virtual bool GetSize(int64* size_out); |
| 34 virtual bool IsStreaming(); | 34 virtual bool IsStreaming(); |
| 35 | 35 |
| 36 private: | 36 private: |
| 37 // Only allow factories and tests to create this object. | 37 // Only allow factories and tests to create this object. |
| 38 // | 38 // |
| 39 // TODO(scherkus): I'm getting tired of these factories getting in the way | 39 // TODO(scherkus): I'm getting tired of these factories getting in the way |
| 40 // of my tests!!! | 40 // of my tests!!! |
| 41 FRIEND_TEST(FileDataSourceTest, OpenFile); | 41 FRIEND_TEST_ALL_PREFIXES(FileDataSourceTest, OpenFile); |
| 42 FRIEND_TEST(FileDataSourceTest, ReadData); | 42 FRIEND_TEST_ALL_PREFIXES(FileDataSourceTest, ReadData); |
| 43 FRIEND_TEST(FileDataSourceTest, Seek); | 43 FRIEND_TEST_ALL_PREFIXES(FileDataSourceTest, Seek); |
| 44 friend class FilterFactoryImpl0<FileDataSource>; | 44 friend class FilterFactoryImpl0<FileDataSource>; |
| 45 FileDataSource(); | 45 FileDataSource(); |
| 46 virtual ~FileDataSource(); | 46 virtual ~FileDataSource(); |
| 47 | 47 |
| 48 // File handle. NULL if not initialized or an error occurs. | 48 // File handle. NULL if not initialized or an error occurs. |
| 49 FILE* file_; | 49 FILE* file_; |
| 50 | 50 |
| 51 // Size of the file in bytes. | 51 // Size of the file in bytes. |
| 52 int64 file_size_; | 52 int64 file_size_; |
| 53 | 53 |
| 54 // Media format handed out by the DataSource::GetMediaFormat method. | 54 // Media format handed out by the DataSource::GetMediaFormat method. |
| 55 MediaFormat media_format_; | 55 MediaFormat media_format_; |
| 56 | 56 |
| 57 // Critical section that protects all of the DataSource methods to prevent | 57 // Critical section that protects all of the DataSource methods to prevent |
| 58 // a Stop from happening while in the middle of a file I/O operation. | 58 // a Stop from happening while in the middle of a file I/O operation. |
| 59 // TODO(ralphl): Ideally this would use asynchronous I/O or we will know | 59 // TODO(ralphl): Ideally this would use asynchronous I/O or we will know |
| 60 // that we will block for a short period of time in reads. Otherwise, we can | 60 // that we will block for a short period of time in reads. Otherwise, we can |
| 61 // hang the pipeline Stop. | 61 // hang the pipeline Stop. |
| 62 Lock lock_; | 62 Lock lock_; |
| 63 | 63 |
| 64 DISALLOW_COPY_AND_ASSIGN(FileDataSource); | 64 DISALLOW_COPY_AND_ASSIGN(FileDataSource); |
| 65 }; | 65 }; |
| 66 | 66 |
| 67 } // namespace media | 67 } // namespace media |
| 68 | 68 |
| 69 #endif // MEDIA_FILTERS_FILE_DATA_SOURCE_H_ | 69 #endif // MEDIA_FILTERS_FILE_DATA_SOURCE_H_ |
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