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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 #include "chromecast/media/cma/backend/alsa/stream_mixer_alsa.h" | 5 #include "chromecast/media/cma/backend/alsa/stream_mixer_alsa.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 #include <cmath> | 8 #include <cmath> |
9 #include <limits> | 9 #include <limits> |
10 #include <unordered_set> | 10 #include <unordered_set> |
11 #include <utility> | 11 #include <utility> |
12 | 12 |
13 #include "base/bind_helpers.h" | 13 #include "base/bind_helpers.h" |
14 #include "base/command_line.h" | 14 #include "base/command_line.h" |
15 #include "base/lazy_instance.h" | 15 #include "base/lazy_instance.h" |
16 #include "base/memory/ptr_util.h" | 16 #include "base/memory/ptr_util.h" |
17 #include "base/memory/weak_ptr.h" | 17 #include "base/memory/weak_ptr.h" |
18 #include "base/numerics/saturated_arithmetic.h" | 18 #include "base/numerics/saturated_arithmetic.h" |
19 #include "base/single_thread_task_runner.h" | 19 #include "base/single_thread_task_runner.h" |
20 #include "base/threading/platform_thread.h" | 20 #include "base/threading/platform_thread.h" |
21 #include "base/threading/thread_task_runner_handle.h" | 21 #include "base/threading/thread_task_runner_handle.h" |
22 #include "chromecast/base/chromecast_switches.h" | 22 #include "chromecast/base/chromecast_switches.h" |
23 #include "chromecast/media/base/audio_device_ids.h" | 23 #include "chromecast/media/base/audio_device_ids.h" |
24 #include "chromecast/media/cma/backend/alsa/alsa_wrapper.h" | 24 #include "chromecast/media/cma/backend/alsa/alsa_wrapper.h" |
25 #include "chromecast/media/cma/backend/alsa/audio_filter_factory.h" | |
26 #include "chromecast/media/cma/backend/alsa/filter_group.h" | 25 #include "chromecast/media/cma/backend/alsa/filter_group.h" |
| 26 #include "chromecast/media/cma/backend/alsa/post_processing_pipeline_parser.h" |
27 #include "chromecast/media/cma/backend/alsa/stream_mixer_alsa_input_impl.h" | 27 #include "chromecast/media/cma/backend/alsa/stream_mixer_alsa_input_impl.h" |
28 #include "media/audio/audio_device_description.h" | 28 #include "media/audio/audio_device_description.h" |
29 #include "media/base/audio_bus.h" | 29 #include "media/base/audio_bus.h" |
30 #include "media/base/media_switches.h" | 30 #include "media/base/media_switches.h" |
31 | 31 |
32 #define RETURN_REPORT_ERROR(snd_func, ...) \ | 32 #define RETURN_REPORT_ERROR(snd_func, ...) \ |
33 do { \ | 33 do { \ |
34 int err = alsa_->snd_func(__VA_ARGS__); \ | 34 int err = alsa_->snd_func(__VA_ARGS__); \ |
35 if (err < 0) { \ | 35 if (err < 0) { \ |
36 LOG(ERROR) << #snd_func " error: " << alsa_->StrError(err); \ | 36 LOG(ERROR) << #snd_func " error: " << alsa_->StrError(err); \ |
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208 LOG(INFO) << "Setting fixed sample rate to " << fixed_samples_per_second; | 208 LOG(INFO) << "Setting fixed sample rate to " << fixed_samples_per_second; |
209 } | 209 } |
210 | 210 |
211 fixed_output_samples_per_second_ = fixed_samples_per_second; | 211 fixed_output_samples_per_second_ = fixed_samples_per_second; |
212 | 212 |
213 low_sample_rate_cutoff_ = | 213 low_sample_rate_cutoff_ = |
214 chromecast::GetSwitchValueBoolean(switches::kAlsaEnableUpsampling, false) | 214 chromecast::GetSwitchValueBoolean(switches::kAlsaEnableUpsampling, false) |
215 ? kLowSampleRateCutoff | 215 ? kLowSampleRateCutoff |
216 : 0; | 216 : 0; |
217 | 217 |
| 218 // Read post-processing configuration file |
| 219 PostProcessingPipelineParser pipeline_parser; |
| 220 pipeline_parser.Initialize(); |
| 221 |
218 // Create filter groups. | 222 // Create filter groups. |
219 // TODO(bshaya): Switch to filter groups based on AudioContentType. | 223 // TODO(bshaya): Switch to filter groups based on AudioContentType. |
220 filter_groups_.push_back(base::MakeUnique<FilterGroup>( | 224 filter_groups_.push_back(base::MakeUnique<FilterGroup>( |
221 std::unordered_set<std::string>( | 225 std::unordered_set<std::string>( |
222 {::media::AudioDeviceDescription::kCommunicationsDeviceId}), | 226 {::media::AudioDeviceDescription::kCommunicationsDeviceId}), |
223 AudioFilterFactory::COMMUNICATION_AUDIO_FILTER, | 227 AudioContentType::kMedia, kNumOutputChannels, |
224 AudioContentType::kMedia)); | 228 pipeline_parser.GetPipelineByDeviceId( |
| 229 ::media::AudioDeviceDescription::kCommunicationsDeviceId))); |
225 filter_groups_.push_back(base::MakeUnique<FilterGroup>( | 230 filter_groups_.push_back(base::MakeUnique<FilterGroup>( |
226 std::unordered_set<std::string>({kAlarmAudioDeviceId}), | 231 std::unordered_set<std::string>({kAlarmAudioDeviceId}), |
227 AudioFilterFactory::ALARM_AUDIO_FILTER, AudioContentType::kAlarm)); | 232 AudioContentType::kAlarm, kNumOutputChannels, |
| 233 pipeline_parser.GetPipelineByDeviceId(kAlarmAudioDeviceId))); |
228 filter_groups_.push_back(base::MakeUnique<FilterGroup>( | 234 filter_groups_.push_back(base::MakeUnique<FilterGroup>( |
229 std::unordered_set<std::string>({kTtsAudioDeviceId}), | 235 std::unordered_set<std::string>({kTtsAudioDeviceId}), |
230 AudioFilterFactory::TTS_AUDIO_FILTER, AudioContentType::kCommunication)); | 236 AudioContentType::kCommunication, kNumOutputChannels, |
| 237 pipeline_parser.GetPipelineByDeviceId(kTtsAudioDeviceId))); |
231 filter_groups_.push_back(base::MakeUnique<FilterGroup>( | 238 filter_groups_.push_back(base::MakeUnique<FilterGroup>( |
232 std::unordered_set<std::string>( | 239 std::unordered_set<std::string>( |
233 {::media::AudioDeviceDescription::kDefaultDeviceId, | 240 {::media::AudioDeviceDescription::kDefaultDeviceId, |
234 kLocalAudioDeviceId, ""}), | 241 kLocalAudioDeviceId, ""}), |
235 AudioFilterFactory::MEDIA_AUDIO_FILTER, AudioContentType::kMedia)); | 242 AudioContentType::kMedia, kNumOutputChannels, |
| 243 pipeline_parser.GetPipelineByDeviceId( |
| 244 ::media::AudioDeviceDescription::kDefaultDeviceId))); |
236 | 245 |
| 246 // TODO(bshaya): Add support for final mix AudioPostProcessor. |
237 DefineAlsaParameters(); | 247 DefineAlsaParameters(); |
238 } | 248 } |
239 | 249 |
240 void StreamMixerAlsa::ResetTaskRunnerForTest() { | 250 void StreamMixerAlsa::ResetTaskRunnerForTest() { |
241 mixer_task_runner_ = base::ThreadTaskRunnerHandle::Get(); | 251 mixer_task_runner_ = base::ThreadTaskRunnerHandle::Get(); |
242 } | 252 } |
243 | 253 |
244 void StreamMixerAlsa::DefineAlsaParameters() { | 254 void StreamMixerAlsa::DefineAlsaParameters() { |
245 // Get the ALSA output configuration from the command line. | 255 // Get the ALSA output configuration from the command line. |
246 alsa_buffer_size_ = GetSwitchValueNonNegativeInt( | 256 alsa_buffer_size_ = GetSwitchValueNonNegativeInt( |
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492 if (err < 0) { | 502 if (err < 0) { |
493 LOG(ERROR) << "Error setting ALSA playback parameters: " | 503 LOG(ERROR) << "Error setting ALSA playback parameters: " |
494 << alsa_->StrError(err); | 504 << alsa_->StrError(err); |
495 SignalError(); | 505 SignalError(); |
496 return; | 506 return; |
497 } | 507 } |
498 } | 508 } |
499 | 509 |
500 // Initialize filters | 510 // Initialize filters |
501 for (auto&& filter_group : filter_groups_) { | 511 for (auto&& filter_group : filter_groups_) { |
502 filter_group->Initialize(output_samples_per_second_, | 512 filter_group->Initialize(output_samples_per_second_); |
503 ::media::SampleFormat::kSampleFormatS32); | |
504 } | 513 } |
505 | 514 |
506 RETURN_REPORT_ERROR(PcmPrepare, pcm_); | 515 RETURN_REPORT_ERROR(PcmPrepare, pcm_); |
507 RETURN_REPORT_ERROR(PcmStatusMalloc, &pcm_status_); | 516 RETURN_REPORT_ERROR(PcmStatusMalloc, &pcm_status_); |
508 | 517 |
509 rendering_delay_.timestamp_microseconds = kNoTimestamp; | 518 rendering_delay_.timestamp_microseconds = kNoTimestamp; |
510 rendering_delay_.delay_microseconds = 0; | 519 rendering_delay_.delay_microseconds = 0; |
511 | 520 |
512 state_ = kStateNormalPlayback; | 521 state_ = kStateNormalPlayback; |
513 } | 522 } |
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880 } | 889 } |
881 UpdateRenderingDelay(frames); | 890 UpdateRenderingDelay(frames); |
882 for (auto&& input : inputs_) | 891 for (auto&& input : inputs_) |
883 input->AfterWriteFrames(rendering_delay_); | 892 input->AfterWriteFrames(rendering_delay_); |
884 } | 893 } |
885 | 894 |
886 void StreamMixerAlsa::UpdateRenderingDelay(int newly_pushed_frames) { | 895 void StreamMixerAlsa::UpdateRenderingDelay(int newly_pushed_frames) { |
887 DCHECK(mixer_task_runner_->BelongsToCurrentThread()); | 896 DCHECK(mixer_task_runner_->BelongsToCurrentThread()); |
888 CHECK_PCM_INITIALIZED(); | 897 CHECK_PCM_INITIALIZED(); |
889 | 898 |
| 899 // TODO(bshaya): Add rendering delay from post-processors. |
890 if (alsa_->PcmStatus(pcm_, pcm_status_) != 0 || | 900 if (alsa_->PcmStatus(pcm_, pcm_status_) != 0 || |
891 alsa_->PcmStatusGetState(pcm_status_) != SND_PCM_STATE_RUNNING) { | 901 alsa_->PcmStatusGetState(pcm_status_) != SND_PCM_STATE_RUNNING) { |
892 rendering_delay_.timestamp_microseconds = kNoTimestamp; | 902 rendering_delay_.timestamp_microseconds = kNoTimestamp; |
893 rendering_delay_.delay_microseconds = 0; | 903 rendering_delay_.delay_microseconds = 0; |
894 return; | 904 return; |
895 } | 905 } |
896 | 906 |
897 snd_htimestamp_t status_timestamp = {}; | 907 snd_htimestamp_t status_timestamp = {}; |
898 alsa_->PcmStatusGetHtstamp(pcm_status_, &status_timestamp); | 908 alsa_->PcmStatusGetHtstamp(pcm_status_, &status_timestamp); |
899 rendering_delay_.timestamp_microseconds = | 909 rendering_delay_.timestamp_microseconds = |
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979 | 989 |
980 for (auto&& filter : filter_groups_) { | 990 for (auto&& filter : filter_groups_) { |
981 if (filter->content_type() == type) { | 991 if (filter->content_type() == type) { |
982 filter->set_volume(effective_volume); | 992 filter->set_volume(effective_volume); |
983 } | 993 } |
984 } | 994 } |
985 } | 995 } |
986 | 996 |
987 } // namespace media | 997 } // namespace media |
988 } // namespace chromecast | 998 } // namespace chromecast |
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