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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>
#include <system/audio.h>
namespace android_audio_legacy {
// ----------------------------------------------------------------------------
/**
* AudioHardwareBase is a convenient base class used for implementing the
* AudioHardwareInterface interface.
*/
class AudioHardwareBase : public AudioHardwareInterface
{
public:
AudioHardwareBase();
virtual ~AudioHardwareBase() { }
/**
* setMode is called when the audio mode changes. NORMAL mode is for
* standard audio playback, RINGTONE when a ringtone is playing, IN_CALL
* when a telephony call is in progress, IN_COMMUNICATION when a VoIP call is in progress.
*/
virtual status_t setMode(int mode);
virtual status_t setParameters(const String8& keyValuePairs);
virtual String8 getParameters(const String8& keys);
virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount);
virtual status_t getMasterVolume(float *volume);
/**This method dumps the state of the audio hardware */
virtual status_t dumpState(int fd, const Vector<String16>& args);
protected:
/** returns true if the given mode maps to a telephony or VoIP call is in progress */
virtual bool isModeInCall(int mode)
{ return ((mode == AudioSystem::MODE_IN_CALL)
|| (mode == AudioSystem::MODE_IN_COMMUNICATION)); };
/** returns true if a telephony or VoIP call is in progress */
virtual bool isInCall() { return isModeInCall(mMode); };
int mMode;
};
}; // namespace android
#endif // ANDROID_AUDIO_HARDWARE_BASE_H
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