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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/single_thread_task_runner.h" | 16 #include "base/single_thread_task_runner.h" |
17 #include "base/task_scheduler/post_task.h" | |
17 #include "media/base/audio_parameters.h" | 18 #include "media/base/audio_parameters.h" |
18 #include "media/base/media_export.h" | 19 #include "media/base/media_export.h" |
19 | 20 |
20 namespace media { | 21 namespace media { |
21 | 22 |
22 class AudioBus; | 23 class AudioBus; |
23 | 24 |
24 // 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 |
25 // operations are non-blocking. | 26 // operations are non-blocking. |
26 // Functions are virtual for the purpose of test mocking. | 27 // Functions are virtual for the purpose of test mocking. |
27 class MEDIA_EXPORT AudioDebugFileWriter { | 28 class MEDIA_EXPORT AudioDebugFileWriter { |
28 public: | 29 public: |
29 // 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 |
30 // 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 |
31 // Write() must match |params|. | 32 // Write() must match |params|. |
32 AudioDebugFileWriter( | 33 AudioDebugFileWriter(const AudioParameters& params); |
33 const AudioParameters& params, | |
34 scoped_refptr<base::SingleThreadTaskRunner> file_task_runner); | |
35 | 34 |
36 virtual ~AudioDebugFileWriter(); | 35 virtual ~AudioDebugFileWriter(); |
37 | 36 |
38 // 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 |
39 // 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 |
40 // called on the same sequence as Start(). | 39 // called on the same sequence as Start(). |
41 virtual void Start(const base::FilePath& file); | 40 virtual void Start(const base::FilePath& file); |
42 | 41 |
43 // 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 |
44 // Stop(). Will be automatically called on destruction. | 43 // Stop(). Will be automatically called on destruction. |
(...skipping 32 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
77 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | 76 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
78 }; | 77 }; |
79 | 78 |
80 using AudioFileWriterUniquePtr = | 79 using AudioFileWriterUniquePtr = |
81 std::unique_ptr<AudioFileWriter, OnThreadDeleter>; | 80 std::unique_ptr<AudioFileWriter, OnThreadDeleter>; |
82 | 81 |
83 AudioFileWriterUniquePtr file_writer_; | 82 AudioFileWriterUniquePtr file_writer_; |
84 base::SequenceChecker client_sequence_checker_; | 83 base::SequenceChecker client_sequence_checker_; |
85 | 84 |
86 // The task runner to do file output operations on. | 85 // The task runner to do file output operations on. |
87 scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_; | 86 const scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_ = |
87 base::CreateSingleThreadTaskRunnerWithTraits( | |
gab
2017/05/18 16:10:10
In general we don't want to create SingleThreadTas
Sébastien Marchand
2017/05/18 17:43:06
Thanks for the detailed comment! I'm addressing th
| |
88 {base::MayBlock(), base::TaskPriority::BACKGROUND}); | |
88 | 89 |
89 DISALLOW_COPY_AND_ASSIGN(AudioDebugFileWriter); | 90 DISALLOW_COPY_AND_ASSIGN(AudioDebugFileWriter); |
90 }; | 91 }; |
91 | 92 |
92 } // namspace media | 93 } // namspace media |
93 | 94 |
94 #endif // MEDIA_AUDIO_AUDIO_DEBUG_FILE_WRITER_H_ | 95 #endif // MEDIA_AUDIO_AUDIO_DEBUG_FILE_WRITER_H_ |
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