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96 lines
2.9 KiB
96 lines
2.9 KiB
4 months ago
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/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* 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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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#ifndef CTSAUDIO_AUDIOHARDWARE_H
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#define CTSAUDIO_AUDIOHARDWARE_H
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#include <utils/StrongPointer.h>
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#include <utils/RefBase.h>
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#include "Buffer.h"
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class TaskCase;
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/**
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* Utility class for H/W detection
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*/
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class AudioHardware : virtual public android::RefBase {
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public:
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/** audio length should be multiple of this */
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static const int SAMPLES_PER_ONE_GO = 4096;
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enum SamplingRate {
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ESamplingRateInvald = 0,
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ESampleRate_16000 = 16000,
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ESampleRate_44100 = 44100
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};
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enum BytesPerSample {
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E2BPS = 2
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};
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enum AudioMode {
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EModeVoice = 0,
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EModeMusic = 1
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};
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/**
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* detect supported audio H/W
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* @return card number of detected H/W. -1 if not found.
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*/
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static int detectAudioHw();
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/**
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* Factory method
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* options are : local or remote, playback or recording
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* can return NULL(sp.get() == NULL) if H/W not found
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*/
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static android::sp<AudioHardware> createAudioHw(bool local, bool playback,
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TaskCase* testCase = NULL);
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virtual ~AudioHardware();
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/**
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* prepare playback or recording
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*/
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virtual bool prepare(SamplingRate samplingRate, int volume, int mode = EModeVoice) = 0;
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/**
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* Convenience API to pass buffer ID. The buffer can be either present in testCase
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* or in remote device (when testCase is NULL)
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*/
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virtual bool startPlaybackOrRecordById(const android::String8& id, TaskCase* testCase = NULL);
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/**
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* Playback / Record with given buffer
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* @param buffer buffer to play / record
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* @param numberRepetition How many times to repeat playback / record for given buffer.
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* For record, it does not have much meaning as the last recording will always
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* override.
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*/
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virtual bool startPlaybackOrRecord(android::sp<Buffer>& buffer,
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int numberRepetition = 1) = 0;
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/**
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* Wait for the playback / recording to complete. return true when successfully finished.
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* Calling waitForCompletion after calling stopPlaybackOrRecord will lead into blocking
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* the calling thread for some time.
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*/
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virtual bool waitForCompletion() = 0;
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/// stops the on-going action. The active task can be canceled.
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virtual void stopPlaybackOrRecord() = 0;
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protected:
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static int mHwId;
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};
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#endif // CTSAUDIO_AUDIOHARDWARE_H
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