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66 lines
2.4 KiB
66 lines
2.4 KiB
/* |
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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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