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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_AUDIO_HARDWARE_BASE_H
#define ANDROID_AUDIO_HARDWARE_BASE_H
#include "hardware_legacy/AudioHardwareInterface.h"
namespace android {
// ----------------------------------------------------------------------------
/**
* AudioHardwareBase is a convenient base class used for implementing the
* AudioHardwareInterface interface.
*/
class AudioHardwareBase : public AudioHardwareInterface
{
public:
AudioHardwareBase();
virtual ~AudioHardwareBase() { }
/**
* Audio routing methods. Routes defined in include/hardware_legacy/AudioSystem.h.
* Audio routes can be (ROUTE_EARPIECE | ROUTE_SPEAKER | ROUTE_BLUETOOTH
* | ROUTE_HEADSET)
*
* setRouting sets the routes for a mode. This is called at startup. It is
* also called when a new device is connected, such as a wired headset is
* plugged in or a Bluetooth headset is paired.
*/
virtual status_t setRouting(int mode, uint32_t routes);
virtual status_t getRouting(int mode, uint32_t* routes);
/**
* setMode is called when the audio mode changes. NORMAL mode is for
* standard audio playback, RINGTONE when a ringtone is playing, and IN_CALL
* when a call is in progress.
*/
virtual status_t setMode(int mode);
virtual status_t getMode(int* mode);
// Temporary interface, do not use
// TODO: Replace with a more generic key:value get/set mechanism
virtual status_t setParameter(const char* key, const char* value);
virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount);
/**This method dumps the state of the audio hardware */
virtual status_t dumpState(int fd, const Vector<String16>& args);
protected:
int mMode;
uint32_t mRoutes[AudioSystem::NUM_MODES];
};
}; // namespace android
#endif // ANDROID_AUDIO_HARDWARE_BASE_H
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