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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 // Defines various types of timestamped media buffers used for transporting | 5 // Defines various types of timestamped media buffers used for transporting |
| 6 // data between filters. Every buffer contains a timestamp in microseconds | 6 // data between filters. Every buffer contains a timestamp in microseconds |
| 7 // describing the relative position of the buffer within the media stream, and | 7 // describing the relative position of the buffer within the media stream, and |
| 8 // the duration in microseconds for the length of time the buffer will be | 8 // the duration in microseconds for the length of time the buffer will be |
| 9 // rendered. | 9 // rendered. |
| 10 // | 10 // |
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| 78 | 78 |
| 79 class Buffer : public StreamSample { | 79 class Buffer : public StreamSample { |
| 80 public: | 80 public: |
| 81 // Returns a read only pointer to the buffer data. | 81 // Returns a read only pointer to the buffer data. |
| 82 virtual const uint8* GetData() const = 0; | 82 virtual const uint8* GetData() const = 0; |
| 83 | 83 |
| 84 // Returns the size of valid data in bytes. | 84 // Returns the size of valid data in bytes. |
| 85 virtual size_t GetDataSize() const = 0; | 85 virtual size_t GetDataSize() const = 0; |
| 86 | 86 |
| 87 // If there's no data in this buffer, it represents end of stream. | 87 // If there's no data in this buffer, it represents end of stream. |
| 88 virtual bool IsEndOfStream() const { return GetData() == NULL; } | 88 virtual bool IsEndOfStream() const; |
| 89 | 89 |
| 90 protected: | 90 protected: |
| 91 virtual ~Buffer() {} | 91 virtual ~Buffer() {} |
| 92 }; | 92 }; |
| 93 | 93 |
| 94 } // namespace media | 94 } // namespace media |
| 95 | 95 |
| 96 #endif // MEDIA_BASE_BUFFERS_H_ | 96 #endif // MEDIA_BASE_BUFFERS_H_ |
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