| // Copyright 2020 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SRC_MEDIA_AUDIO_AUDIO_CORE_USAGE_GAIN_REPORTER_IMPL_H_ |
| #define SRC_MEDIA_AUDIO_AUDIO_CORE_USAGE_GAIN_REPORTER_IMPL_H_ |
| |
| #include <fuchsia/media/cpp/fidl.h> |
| #include <lib/fidl/cpp/binding_set.h> |
| |
| #include <unordered_set> |
| |
| #include "src/media/audio/audio_core/audio_device_manager.h" |
| #include "src/media/audio/audio_core/context.h" |
| #include "src/media/audio/audio_core/loudness_transform.h" |
| #include "src/media/audio/audio_core/process_config.h" |
| #include "src/media/audio/audio_core/stream_volume_manager.h" |
| |
| namespace media::audio { |
| |
| class UsageGainReporterImpl : public fuchsia::media::UsageGainReporter { |
| public: |
| explicit UsageGainReporterImpl(Context* context) |
| : UsageGainReporterImpl(context->device_manager(), context->volume_manager(), |
| context->process_config()) { |
| FX_DCHECK(context); |
| } |
| |
| UsageGainReporterImpl(DeviceRegistry& device_registry, StreamVolumeManager& stream_volume_manager, |
| const ProcessConfig& process_config) |
| : device_registry_(device_registry), |
| stream_volume_manager_(stream_volume_manager), |
| process_config_(process_config) {} |
| |
| fidl::InterfaceRequestHandler<fuchsia::media::UsageGainReporter> GetFidlRequestHandler(); |
| |
| // |fuchsia::media::UsageGainReporter| |
| void RegisterListener( |
| std::string device_unique_id, fuchsia::media::Usage usage, |
| fidl::InterfaceHandle<fuchsia::media::UsageGainListener> usage_gain_listener_handler) final; |
| |
| private: |
| friend class UsageGainReporterTest; |
| |
| class Listener final : public StreamVolume { |
| public: |
| Listener(UsageGainReporterImpl& parent, |
| const DeviceConfig::OutputDeviceProfile& output_device_profile, |
| fuchsia::media::Usage usage, fuchsia::media::UsageGainListenerPtr usage_gain_listener); |
| |
| private: |
| // |media::audio::StreamVolume| |
| fuchsia::media::Usage GetStreamUsage() const final { return fidl::Clone(usage_); } |
| bool GetStreamMute() const final { return false; } |
| void RealizeVolume(VolumeCommand volume_command) final; |
| |
| UsageGainReporterImpl& parent_; |
| std::shared_ptr<LoudnessTransform> loudness_transform_; |
| bool independent_volume_control_; |
| fuchsia::media::Usage usage_; |
| fuchsia::media::UsageGainListenerPtr usage_gain_listener_; |
| size_t unacked_messages_ = 0; |
| }; |
| |
| // TODO(fxbug.dev/50074): Queue a function on the async loop to periodically execute and |
| // clean up any listeners with too many unacked messages |
| |
| // TODO(fxbug.dev/50596): Disconnect listeners upon device removal |
| |
| DeviceRegistry& device_registry_; |
| StreamVolumeManager& stream_volume_manager_; |
| const ProcessConfig& process_config_; |
| std::unordered_map<Listener*, std::unique_ptr<Listener>> listeners_; |
| fidl::BindingSet<fuchsia::media::UsageGainReporter, UsageGainReporterImpl*> bindings_; |
| }; |
| |
| } // namespace media::audio |
| |
| #endif // SRC_MEDIA_AUDIO_AUDIO_CORE_USAGE_GAIN_REPORTER_IMPL_H_ |