OLD | NEW |
1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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_AUDIO_AUDIO_DEBUG_FILE_WRITER_H_ | 5 #ifndef MEDIA_AUDIO_AUDIO_DEBUG_FILE_WRITER_H_ |
6 #define MEDIA_AUDIO_AUDIO_DEBUG_FILE_WRITER_H_ | 6 #define MEDIA_AUDIO_AUDIO_DEBUG_FILE_WRITER_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <memory> | 10 #include <memory> |
11 | 11 |
12 #include "base/files/file.h" | 12 #include "base/files/file.h" |
13 #include "base/macros.h" | 13 #include "base/macros.h" |
14 #include "base/memory/ref_counted.h" | 14 #include "base/memory/ref_counted.h" |
15 #include "base/sequence_checker.h" | 15 #include "base/sequence_checker.h" |
16 #include "base/sequenced_task_runner.h" | 16 #include "base/sequenced_task_runner.h" |
17 #include "base/single_thread_task_runner.h" | 17 #include "base/task_scheduler/post_task.h" |
18 #include "media/base/audio_parameters.h" | 18 #include "media/base/audio_parameters.h" |
19 #include "media/base/media_export.h" | 19 #include "media/base/media_export.h" |
20 | 20 |
21 namespace media { | 21 namespace media { |
22 | 22 |
23 class AudioBus; | 23 class AudioBus; |
24 | 24 |
25 // Writes audio data to a 16 bit PCM WAVE file used for debugging purposes. All | 25 // Writes audio data to a 16 bit PCM WAVE file used for debugging purposes. All |
26 // operations are non-blocking. | 26 // operations are non-blocking. |
27 // Functions are virtual for the purpose of test mocking. | 27 // Functions are virtual for the purpose of test mocking. |
28 class MEDIA_EXPORT AudioDebugFileWriter { | 28 class MEDIA_EXPORT AudioDebugFileWriter { |
29 public: | 29 public: |
30 // Number of channels and sample rate are used from |params|, the other | 30 // Number of channels and sample rate are used from |params|, the other |
31 // parameters are ignored. The number of channels in the data passed to | 31 // parameters are ignored. The number of channels in the data passed to |
32 // Write() must match |params|. | 32 // Write() must match |params|. |
33 AudioDebugFileWriter( | 33 AudioDebugFileWriter(const AudioParameters& params); |
34 const AudioParameters& params, | |
35 scoped_refptr<base::SingleThreadTaskRunner> file_task_runner); | |
36 | 34 |
37 virtual ~AudioDebugFileWriter(); | 35 virtual ~AudioDebugFileWriter(); |
38 | 36 |
39 // Must be called before calling Write() for the first time after creation or | 37 // Must be called before calling Write() for the first time after creation or |
40 // Stop() call. Can be called on any sequence; Write() and Stop() must be | 38 // Stop() call. Can be called on any sequence; Write() and Stop() must be |
41 // called on the same sequence as Start(). | 39 // called on the same sequence as Start(). |
42 virtual void Start(const base::FilePath& file); | 40 virtual void Start(const base::FilePath& file); |
43 | 41 |
44 // Must be called to finish recording. Each call to Start() requires a call to | 42 // Must be called to finish recording. Each call to Start() requires a call to |
45 // Stop(). Will be automatically called on destruction. | 43 // Stop(). Will be automatically called on destruction. |
(...skipping 33 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
79 scoped_refptr<base::SequencedTaskRunner> task_runner_; | 77 scoped_refptr<base::SequencedTaskRunner> task_runner_; |
80 }; | 78 }; |
81 | 79 |
82 using AudioFileWriterUniquePtr = | 80 using AudioFileWriterUniquePtr = |
83 std::unique_ptr<AudioFileWriter, OnSequenceDeleter>; | 81 std::unique_ptr<AudioFileWriter, OnSequenceDeleter>; |
84 | 82 |
85 AudioFileWriterUniquePtr file_writer_; | 83 AudioFileWriterUniquePtr file_writer_; |
86 base::SequenceChecker client_sequence_checker_; | 84 base::SequenceChecker client_sequence_checker_; |
87 | 85 |
88 // The task runner to do file output operations on. | 86 // The task runner to do file output operations on. |
89 scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_; | 87 const scoped_refptr<base::SequencedTaskRunner> file_task_runner_ = |
| 88 base::CreateSequencedTaskRunnerWithTraits( |
| 89 {base::MayBlock(), base::TaskPriority::BACKGROUND}); |
90 | 90 |
91 DISALLOW_COPY_AND_ASSIGN(AudioDebugFileWriter); | 91 DISALLOW_COPY_AND_ASSIGN(AudioDebugFileWriter); |
92 }; | 92 }; |
93 | 93 |
94 } // namspace media | 94 } // namspace media |
95 | 95 |
96 #endif // MEDIA_AUDIO_AUDIO_DEBUG_FILE_WRITER_H_ | 96 #endif // MEDIA_AUDIO_AUDIO_DEBUG_FILE_WRITER_H_ |
OLD | NEW |