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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_MIDI_MIDI_MESSAGE_QUEUE_H_ | 5 #ifndef MEDIA_MIDI_MIDI_MESSAGE_QUEUE_H_ |
| 6 #define MEDIA_MIDI_MIDI_MESSAGE_QUEUE_H_ | 6 #define MEDIA_MIDI_MIDI_MESSAGE_QUEUE_H_ |
| 7 | 7 |
| 8 #include <deque> | 8 #include <deque> |
| 9 #include <vector> | 9 #include <vector> |
| 10 | 10 |
| 11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
| 12 #include "media/base/media_export.h" | 12 #include "media/base/media_export.h" |
| 13 | 13 |
| 14 namespace media { | 14 namespace media { |
| 15 namespace midi { |
| 15 | 16 |
| 16 // A simple message splitter for possibly unsafe/corrupted MIDI data stream. | 17 // A simple message splitter for possibly unsafe/corrupted MIDI data stream. |
| 17 // This class allows you to: | 18 // This class allows you to: |
| 18 // - maintain fragmented MIDI message. | 19 // - maintain fragmented MIDI message. |
| 19 // - skip any invalid data sequence. | 20 // - skip any invalid data sequence. |
| 20 // - reorder MIDI messages so that "System Real Time Message", which can be | 21 // - reorder MIDI messages so that "System Real Time Message", which can be |
| 21 // inserted at any point of the byte stream, is placed at the boundary of | 22 // inserted at any point of the byte stream, is placed at the boundary of |
| 22 // complete MIDI messages. | 23 // complete MIDI messages. |
| 23 // - (Optional) reconstruct complete MIDI messages from data stream where | 24 // - (Optional) reconstruct complete MIDI messages from data stream where |
| 24 // MIDI status byte is abbreviated (a.k.a. "running status"). | 25 // MIDI status byte is abbreviated (a.k.a. "running status"). |
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| 60 // |message| is empty if there is no complete MIDI message any more. | 61 // |message| is empty if there is no complete MIDI message any more. |
| 61 void Get(std::vector<uint8>* message); | 62 void Get(std::vector<uint8>* message); |
| 62 | 63 |
| 63 private: | 64 private: |
| 64 std::deque<uint8> queue_; | 65 std::deque<uint8> queue_; |
| 65 std::vector<uint8> next_message_; | 66 std::vector<uint8> next_message_; |
| 66 const bool allow_running_status_; | 67 const bool allow_running_status_; |
| 67 DISALLOW_COPY_AND_ASSIGN(MidiMessageQueue); | 68 DISALLOW_COPY_AND_ASSIGN(MidiMessageQueue); |
| 68 }; | 69 }; |
| 69 | 70 |
| 71 } // namespace midi |
| 70 } // namespace media | 72 } // namespace media |
| 71 | 73 |
| 72 #endif // MEDIA_MIDI_MIDI_MESSAGE_QUEUE_H_ | 74 #endif // MEDIA_MIDI_MIDI_MESSAGE_QUEUE_H_ |
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