/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_AUDIO_HARDWARE_BASE_H
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#define ANDROID_AUDIO_HARDWARE_BASE_H
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#include <hardware_legacy/AudioHardwareInterface.h>
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#include <system/audio.h>
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namespace android_audio_legacy {
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// ----------------------------------------------------------------------------
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/**
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* AudioHardwareBase is a convenient base class used for implementing the
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* AudioHardwareInterface interface.
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*/
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class AudioHardwareBase : public AudioHardwareInterface
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{
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public:
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AudioHardwareBase();
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virtual ~AudioHardwareBase() { }
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/**
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* setMode is called when the audio mode changes. NORMAL mode is for
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* standard audio playback, RINGTONE when a ringtone is playing, IN_CALL
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* when a telephony call is in progress, IN_COMMUNICATION when a VoIP call is in progress.
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*/
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virtual status_t setMode(int mode);
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virtual status_t setParameters(const String8& keyValuePairs);
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virtual String8 getParameters(const String8& keys);
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virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount);
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virtual status_t getMasterVolume(float *volume);
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/**This method dumps the state of the audio hardware */
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virtual status_t dumpState(int fd, const Vector<String16>& args);
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protected:
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/** returns true if the given mode maps to a telephony or VoIP call is in progress */
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virtual bool isModeInCall(int mode)
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{ return ((mode == AudioSystem::MODE_IN_CALL)
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|| (mode == AudioSystem::MODE_IN_COMMUNICATION)); };
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/** returns true if a telephony or VoIP call is in progress */
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virtual bool isInCall() { return isModeInCall(mMode); };
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int mMode;
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};
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}; // namespace android
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#endif // ANDROID_AUDIO_HARDWARE_BASE_H
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