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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_MEDIA_AUDIO_INPUT_STREAM_BROKER_H_
#define CONTENT_BROWSER_MEDIA_AUDIO_INPUT_STREAM_BROKER_H_
#include <optional>
#include <string>
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
#include "content/public/browser/audio_stream_broker.h"
#include "media/base/audio_parameters.h"
#include "media/mojo/mojom/audio_data_pipe.mojom.h"
#include "media/mojo/mojom/audio_input_stream.mojom.h"
#include "media/mojo/mojom/audio_stream_factory.mojom.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.h"
namespace content {
// AudioInputStreamBroker is used to broker a connection between a client
// (typically renderer) and the audio service. It is operated on the UI thread.
class CONTENT_EXPORT AudioInputStreamBroker final
: public AudioStreamBroker,
public media::mojom::AudioInputStreamObserver {
public:
AudioInputStreamBroker(
int render_process_id,
int render_frame_id,
const std::string& device_id,
const media::AudioParameters& params,
uint32_t shared_memory_count,
bool enable_agc,
media::mojom::AudioProcessingConfigPtr processing_config,
AudioStreamBroker::DeleterCallback deleter,
mojo::PendingRemote<blink::mojom::RendererAudioInputStreamFactoryClient>
renderer_factory_client);
AudioInputStreamBroker(const AudioInputStreamBroker&) = delete;
AudioInputStreamBroker& operator=(const AudioInputStreamBroker&) = delete;
~AudioInputStreamBroker() final;
// Creates the stream.
void CreateStream(media::mojom::AudioStreamFactory* factory) final;
// media::AudioInputStreamObserver implementation.
void DidStartRecording() final;
private:
void StreamCreated(mojo::PendingRemote<media::mojom::AudioInputStream> stream,
media::mojom::ReadWriteAudioDataPipePtr data_pipe,
bool initially_muted,
const std::optional<base::UnguessableToken>& stream_id);
void ObserverBindingLost(uint32_t reason, const std::string& description);
void ClientBindingLost();
void Cleanup();
const std::string device_id_;
media::AudioParameters params_;
const uint32_t shared_memory_count_;
const bool enable_agc_;
// Indicates that CreateStream has been called, but not StreamCreated.
bool awaiting_created_ = false;
DeleterCallback deleter_;
media::mojom::AudioProcessingConfigPtr processing_config_;
mojo::Remote<blink::mojom::RendererAudioInputStreamFactoryClient>
renderer_factory_client_;
mojo::Receiver<AudioInputStreamObserver> observer_receiver_{this};
mojo::PendingReceiver<media::mojom::AudioInputStreamClient>
pending_client_receiver_;
media::mojom::AudioInputStreamObserver::DisconnectReason disconnect_reason_ =
media::mojom::AudioInputStreamObserver::DisconnectReason::
kDocumentDestroyed;
base::WeakPtrFactory<AudioInputStreamBroker> weak_ptr_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_MEDIA_AUDIO_INPUT_STREAM_BROKER_H_
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