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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; |
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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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