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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_AUDIO_FUCHSIA_AUDIO_INPUT_STREAM_FUCHSIA_H_
#define MEDIA_AUDIO_FUCHSIA_AUDIO_INPUT_STREAM_FUCHSIA_H_
#include <fuchsia/media/cpp/fidl.h>
#include "media/audio/audio_io.h"
#include "media/base/audio_parameters.h"
#include "media/base/media_export.h"
#include "media/fuchsia/common/vmo_buffer.h"
namespace media {
class AudioManagerFuchsia;
class MEDIA_EXPORT AudioInputStreamFuchsia : public AudioInputStream {
public:
// Caller must ensure that manager outlives the stream.
AudioInputStreamFuchsia(AudioManagerFuchsia* manager,
const AudioParameters& parameters,
std::string device_id);
~AudioInputStreamFuchsia() override;
OpenOutcome Open() override;
void Start(AudioInputCallback* callback) override;
void Stop() override;
void Close() override;
double GetMaxVolume() override;
void SetVolume(double volume) override;
double GetVolume() override;
bool SetAutomaticGainControl(bool enabled) override;
bool GetAutomaticGainControl() override;
bool IsMuted() override;
void SetOutputDeviceForAec(const std::string& output_device_id) override;
private:
// OnPacketProduced event handler for the |capturer_|.
void OnPacketProduced(fuchsia::media::StreamPacket packet);
// Reports an error to |callback_| and disconnects |capturer_|.
void ReportError();
AudioManagerFuchsia* const manager_;
AudioParameters parameters_;
std::string device_id_;
fuchsia::media::AudioCapturerPtr capturer_;
// VMO with the AudioCapturer in order to pass the captured data.
VmoBuffer capture_buffer_;
// Indicates that async capture mode has been activated for |capturer_|, i.e.
// StartAsyncCapture() has been called.
bool is_capturer_started_ = false;
std::unique_ptr<AudioBus> audio_bus_;
AudioInputCallback* callback_ = nullptr;
};
} // namespace media
#endif // MEDIA_AUDIO_FUCHSIA_AUDIO_INPUT_STREAM_FUCHSIA_H_
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