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// Copyright 2015 The Chromium 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 CHROMEOS_DBUS_AUDIO_DSP_CLIENT_H_
#define CHROMEOS_DBUS_AUDIO_DSP_CLIENT_H_
#include <stdint.h>
#include "base/macros.h"
#include "chromeos/chromeos_export.h"
#include "chromeos/dbus/dbus_client.h"
#include "chromeos/dbus/dbus_method_call_status.h"
namespace chromeos {
// A DBus client class for the org.chromium.AudioDsp service.
class CHROMEOS_EXPORT AudioDspClient : public DBusClient {
public:
// A callback to handle responses of methods returning a double value.
typedef base::Callback<void(DBusMethodCallStatus call_status, double result)>
DoubleDBusMethodCallback;
// A callback to handle responses of methods returning two string values.
typedef base::Callback<void(DBusMethodCallStatus call_status,
const std::string& result1,
const std::string& result2)>
TwoStringDBusMethodCallback;
// A callback to handle responses of methods returning three string values.
typedef base::Callback<void(DBusMethodCallStatus call_status,
const std::string& result1,
const std::string& result2,
const std::string& result3)>
ThreeStringDBusMethodCallback;
// Interface for observing DSP events from a DSP client.
class Observer {
public:
virtual ~Observer() {}
// Called when the Error signal is received.
virtual void OnError(int32_t error_code) = 0;
};
~AudioDspClient() override;
// Adds and removes observers for AUDIO_DSP events.
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
// Factory function; creates a new instance which is owned by the caller.
// For normal usage, access the singleton via DBusThreadManager::Get().
static AudioDspClient* Create();
// Calls Initialize method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded, and a bool that is the return value from
// the DBus method.
virtual void Initialize(const BoolDBusMethodCallback& callback) = 0;
// Calls SetStandbyMode method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded.
virtual void SetStandbyMode(bool standby,
const VoidDBusMethodCallback& callback) = 0;
// Calls SetNightMode method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded.
virtual void SetNightMode(bool night_mode,
const VoidDBusMethodCallback& callback) = 0;
// Calls GetNightMode method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded, and a bool that is the return value from
// the DBus method.
virtual void GetNightMode(const BoolDBusMethodCallback& callback) = 0;
// Calls SetTreble method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded.
virtual void SetTreble(double db_fs,
const VoidDBusMethodCallback& callback) = 0;
// Calls GetTreble method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded, and a double that is the return value from
// the DBus method.
virtual void GetTreble(const DoubleDBusMethodCallback& callback) = 0;
// Calls SetBass method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded.
virtual void SetBass(double db_fs,
const VoidDBusMethodCallback& callback) = 0;
// Calls SetBass method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded, and a double that is the return value from
// the DBus method.
virtual void GetBass(const DoubleDBusMethodCallback& callback) = 0;
// Calls GetCapabilitiesOEM method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded, and three std::strings that constitute
// the return value from the DBus method.
virtual void GetCapabilitiesOEM(
const ThreeStringDBusMethodCallback& callback) = 0;
// Calls SetCapabilitiesOEM method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded.
virtual void SetCapabilitiesOEM(uint32_t speaker_id,
const std::string& speaker_capabilities,
const std::string& driver_capabilities,
const VoidDBusMethodCallback& callback) = 0;
// Calls GetFilterConfigOEM method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded, and two std::strings that constitute
// the return value from the DBus method.
virtual void GetFilterConfigOEM(
uint32_t speaker_id,
const TwoStringDBusMethodCallback& callback) = 0;
// Calls SetFilterConfigOEM method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded.
virtual void SetFilterConfigOEM(const std::string& speaker_config,
const std::string& driver_config,
const VoidDBusMethodCallback& callback) = 0;
// Calls SetSourceType method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded.
virtual void SetSourceType(uint16_t source_type,
const VoidDBusMethodCallback& callback) = 0;
// Calls AmplifierVolumeChanged method.
// |callback| will be called with a DBusMethodCallStatus indicating whether
// the DBus method call succeeded.
virtual void AmplifierVolumeChanged(
double db_spl,
const VoidDBusMethodCallback& callback) = 0;
protected:
// Create() should be used instead.
AudioDspClient();
private:
DISALLOW_COPY_AND_ASSIGN(AudioDspClient);
};
} // namespace chromeos
#endif // CHROMEOS_DBUS_AUDIO_DSP_CLIENT_H_
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