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Side by Side Diff: services/media/audio/platform/linux/alsa_output.h

Issue 1902183002: Motown: Change media type (stream type) representation (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Changes per review feedback. Created 4 years, 8 months ago
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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 SERVICES_MEDIA_AUDIO_PLATFORM_LINUX_ALSA_OUTPUT_H_ 5 #ifndef SERVICES_MEDIA_AUDIO_PLATFORM_LINUX_ALSA_OUTPUT_H_
6 #define SERVICES_MEDIA_AUDIO_PLATFORM_LINUX_ALSA_OUTPUT_H_ 6 #define SERVICES_MEDIA_AUDIO_PLATFORM_LINUX_ALSA_OUTPUT_H_
7 7
8 #include <memory> 8 #include <memory>
9 9
10 #include "mojo/services/media/common/cpp/linear_transform.h" 10 #include "mojo/services/media/common/cpp/linear_transform.h"
11 #include "mojo/services/media/common/interfaces/media_types.mojom.h" 11 #include "mojo/services/media/common/interfaces/media_types.mojom.h"
12 #include "services/media/audio/audio_output.h" 12 #include "services/media/audio/audio_output.h"
13 #include "services/media/audio/platform/generic/standard_output_base.h" 13 #include "services/media/audio/platform/generic/standard_output_base.h"
14 14
15 namespace mojo { 15 namespace mojo {
16 namespace media { 16 namespace media {
17 namespace audio { 17 namespace audio {
18 18
19 class AlsaOutput : public StandardOutputBase { 19 class AlsaOutput : public StandardOutputBase {
20 public: 20 public:
21 static AudioOutputPtr New(AudioOutputManager* manager); 21 static AudioOutputPtr New(AudioOutputManager* manager);
22 ~AlsaOutput() override; 22 ~AlsaOutput() override;
23 23
24 MediaResult Configure(LpcmMediaTypeDetailsPtr config); 24 MediaResult Configure(AudioMediaTypeDetailsPtr config);
25 25
26 protected: 26 protected:
27 explicit AlsaOutput(AudioOutputManager* manager); 27 explicit AlsaOutput(AudioOutputManager* manager);
28 28
29 // AudioOutput implementation 29 // AudioOutput implementation
30 MediaResult Init() override; 30 MediaResult Init() override;
31 void Cleanup() override; 31 void Cleanup() override;
32 32
33 // StandardOutputBase implementation 33 // StandardOutputBase implementation
34 bool StartMixJob(MixJob* job, const LocalTime& process_start) override; 34 bool StartMixJob(MixJob* job, const LocalTime& process_start) override;
(...skipping 10 matching lines...) Expand all
45 45
46 void HandleAlsaError(int code); 46 void HandleAlsaError(int code);
47 void HandleAsError(int code); 47 void HandleAsError(int code);
48 void HandleAsUnderflow(); 48 void HandleAsUnderflow();
49 49
50 // libtinyalsa vs. libasound abstraction. Methods are implemented either in 50 // libtinyalsa vs. libasound abstraction. Methods are implemented either in
51 // alsa_output_tinyalsa.cc or alsa_output_desktop.cc depending on the target 51 // alsa_output_tinyalsa.cc or alsa_output_desktop.cc depending on the target
52 // we are building for. 52 // we are building for.
53 MediaResult AlsaOpen(); 53 MediaResult AlsaOpen();
54 void AlsaClose(); 54 void AlsaClose();
55 MediaResult AlsaSelectFormat(const LpcmMediaTypeDetailsPtr& config); 55 MediaResult AlsaSelectFormat(const AudioMediaTypeDetailsPtr& config);
56 int AlsaWrite(const void* data, uint32_t frames); 56 int AlsaWrite(const void* data, uint32_t frames);
57 int AlsaGetAvailDelay(uint32_t* avail, uint32_t* delay = nullptr); 57 int AlsaGetAvailDelay(uint32_t* avail, uint32_t* delay = nullptr);
58 int AlsaRecover(int err_code); 58 int AlsaRecover(int err_code);
59 59
60 void* alsa_device_ = nullptr; 60 void* alsa_device_ = nullptr;
61 int32_t alsa_format_ = -1; 61 int32_t alsa_format_ = -1;
62 62
63 LinearTransform::Ratio frames_per_tick_; 63 LinearTransform::Ratio frames_per_tick_;
64 64
65 std::unique_ptr<uint8_t> mix_buf_; 65 std::unique_ptr<uint8_t> mix_buf_;
66 uint32_t mix_buf_frames_ = 0; 66 uint32_t mix_buf_frames_ = 0;
67 67
68 bool primed_ = false; 68 bool primed_ = false;
69 bool local_to_output_known_ = false; 69 bool local_to_output_known_ = false;
70 LinearTransform local_to_output_; 70 LinearTransform local_to_output_;
71 uint32_t local_to_output_gen_ = MixJob::INVALID_GENERATION + 1; 71 uint32_t local_to_output_gen_ = MixJob::INVALID_GENERATION + 1;
72 int64_t frames_sent_; 72 int64_t frames_sent_;
73 }; 73 };
74 74
75 } // namespace audio 75 } // namespace audio
76 } // namespace media 76 } // namespace media
77 } // namespace mojo 77 } // namespace mojo
78 78
79 #endif // SERVICES_MEDIA_AUDIO_PLATFORM_LINUX_ALSA_OUTPUT_H_ 79 #endif // SERVICES_MEDIA_AUDIO_PLATFORM_LINUX_ALSA_OUTPUT_H_
80
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