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1 /* | 1 /* |
2 * Copyright 2015 The WebRTC Project Authors. All rights reserved. | 2 * Copyright 2015 The WebRTC Project Authors. All rights reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #ifndef WEBRTC_BASE_BUFFERQUEUE_H_ | 11 #ifndef WEBRTC_BASE_BUFFERQUEUE_H_ |
12 #define WEBRTC_BASE_BUFFERQUEUE_H_ | 12 #define WEBRTC_BASE_BUFFERQUEUE_H_ |
13 | 13 |
14 #include <deque> | |
15 #include <vector> | |
16 | 14 |
17 #include "webrtc/base/buffer.h" | 15 // This header is deprecated and is just left here temporarily during |
18 #include "webrtc/base/constructormagic.h" | 16 // refactoring. See https://bugs.webrtc.org/7634 for more details. |
19 #include "webrtc/base/criticalsection.h" | 17 #include "webrtc/rtc_base/bufferqueue.h" |
20 | |
21 namespace rtc { | |
22 | |
23 class BufferQueue { | |
24 public: | |
25 // Creates a buffer queue with a given capacity and default buffer size. | |
26 BufferQueue(size_t capacity, size_t default_size); | |
27 virtual ~BufferQueue(); | |
28 | |
29 // Return number of queued buffers. | |
30 size_t size() const; | |
31 | |
32 // Clear the BufferQueue by moving all Buffers from |queue_| to |free_list_|. | |
33 void Clear(); | |
34 | |
35 // ReadFront will only read one buffer at a time and will truncate buffers | |
36 // that don't fit in the passed memory. | |
37 // Returns true unless no data could be returned. | |
38 bool ReadFront(void* data, size_t bytes, size_t* bytes_read); | |
39 | |
40 // WriteBack always writes either the complete memory or nothing. | |
41 // Returns true unless no data could be written. | |
42 bool WriteBack(const void* data, size_t bytes, size_t* bytes_written); | |
43 | |
44 protected: | |
45 // These methods are called when the state of the queue changes. | |
46 virtual void NotifyReadableForTest() {} | |
47 virtual void NotifyWritableForTest() {} | |
48 | |
49 private: | |
50 size_t capacity_; | |
51 size_t default_size_; | |
52 CriticalSection crit_; | |
53 std::deque<Buffer*> queue_ GUARDED_BY(crit_); | |
54 std::vector<Buffer*> free_list_ GUARDED_BY(crit_); | |
55 | |
56 RTC_DISALLOW_COPY_AND_ASSIGN(BufferQueue); | |
57 }; | |
58 | |
59 } // namespace rtc | |
60 | 18 |
61 #endif // WEBRTC_BASE_BUFFERQUEUE_H_ | 19 #endif // WEBRTC_BASE_BUFFERQUEUE_H_ |
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