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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIA_AUDIO_MOJO_AUDIO_INPUT_IPC_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIA_AUDIO_MOJO_AUDIO_INPUT_IPC_H_
#include <string>
#include "base/functional/callback_helpers.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "media/audio/audio_input_ipc.h"
#include "media/audio/audio_source_parameters.h"
#include "media/base/audio_processor_controls.h"
#include "media/mojo/mojom/audio_input_stream.mojom-blink.h"
#include "media/mojo/mojom/audio_processing.mojom-blink.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "third_party/blink/public/mojom/media/renderer_audio_input_stream_factory.mojom-blink.h"
#include "third_party/blink/renderer/modules/modules_export.h"
namespace blink {
// MojoAudioInputIPC is a renderer-side class for handling creation,
// initialization and control of an input stream. May only be used on a single
// thread.
class MODULES_EXPORT MojoAudioInputIPC
: public media::AudioInputIPC,
public media::AudioProcessorControls,
public mojom::blink::RendererAudioInputStreamFactoryClient,
public media::mojom::blink::AudioInputStreamClient {
public:
// This callback is used by MojoAudioInputIPC to create streams.
// It is expected that after calling, either client->StreamCreated() is
// called or |client| is destructed.
using StreamCreatorCB = base::RepeatingCallback<void(
const media::AudioSourceParameters& source_params,
mojo::PendingRemote<mojom::blink::RendererAudioInputStreamFactoryClient>
client,
mojo::PendingReceiver<media::mojom::blink::AudioProcessorControls>
controls_receiver,
const media::AudioParameters& params,
bool automatic_gain_control,
uint32_t total_segments)>;
using StreamAssociatorCB =
base::RepeatingCallback<void(const base::UnguessableToken& stream_id,
const std::string& output_device_id)>;
MojoAudioInputIPC(const media::AudioSourceParameters& source_params,
StreamCreatorCB stream_creator,
StreamAssociatorCB stream_associator);
MojoAudioInputIPC(const MojoAudioInputIPC&) = delete;
MojoAudioInputIPC& operator=(const MojoAudioInputIPC&) = delete;
~MojoAudioInputIPC() override;
// AudioInputIPC implementation
void CreateStream(media::AudioInputIPCDelegate* delegate,
const media::AudioParameters& params,
bool automatic_gain_control,
uint32_t total_segments) override;
void RecordStream() override;
void SetVolume(double volume) override;
void SetOutputDeviceForAec(const std::string& output_device_id) override;
media::AudioProcessorControls* GetProcessorControls() override;
void CloseStream() override;
// AudioProcessorControls implementation
void GetStats(GetStatsCB callback) override;
void SetPreferredNumCaptureChannels(int32_t num_preferred_channels) override;
private:
void StreamCreated(
mojo::PendingRemote<media::mojom::blink::AudioInputStream> stream,
mojo::PendingReceiver<media::mojom::blink::AudioInputStreamClient>
stream_client_receiver,
media::mojom::blink::ReadWriteAudioDataPipePtr data_pipe,
bool initially_muted,
const std::optional<base::UnguessableToken>& stream_id) override;
void OnError(media::mojom::InputStreamErrorCode code) override;
void OnMutedStateChanged(bool is_muted) override;
void OnDisconnect(uint32_t error, const std::string& reason);
SEQUENCE_CHECKER(sequence_checker_);
const media::AudioSourceParameters source_params_;
StreamCreatorCB stream_creator_;
StreamAssociatorCB stream_associator_;
mojo::Remote<media::mojom::blink::AudioInputStream> stream_;
mojo::Remote<media::mojom::blink::AudioProcessorControls> processor_controls_;
// Initialized on StreamCreated.
std::optional<base::UnguessableToken> stream_id_;
mojo::Receiver<AudioInputStreamClient> stream_client_receiver_{this};
mojo::Receiver<mojom::blink::RendererAudioInputStreamFactoryClient>
factory_client_receiver_{this};
raw_ptr<media::AudioInputIPCDelegate> delegate_ = nullptr;
base::WeakPtrFactory<MojoAudioInputIPC> weak_factory_{this};
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIA_AUDIO_MOJO_AUDIO_INPUT_IPC_H_
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