115 lines
3.9 KiB
C++
115 lines
3.9 KiB
C++
/*
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* Copyright (C) 2008 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 A2DP_AUDIO_HARDWARE_H
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#define A2DP_AUDIO_HARDWARE_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/threads.h>
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#include <hardware_legacy/AudioHardwareBase.h>
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namespace android {
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class A2dpAudioInterface : public AudioHardwareBase
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{
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class A2dpAudioStreamOut;
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public:
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A2dpAudioInterface();
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virtual ~A2dpAudioInterface();
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virtual status_t initCheck();
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virtual status_t setVoiceVolume(float volume);
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virtual status_t setMasterVolume(float volume);
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// mic mute
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virtual status_t setMicMute(bool state);
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virtual status_t getMicMute(bool* state);
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// Temporary interface, do not use
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// TODO: Replace with a more generic key:value get/set mechanism
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virtual status_t setParameter(const char *key, const char *value);
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// create I/O streams
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virtual AudioStreamOut* openOutputStream(
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int format=0,
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int channelCount=0,
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uint32_t sampleRate=0,
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status_t *status=0);
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virtual AudioStreamIn* openInputStream(
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int inputSource,
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int format,
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int channelCount,
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uint32_t sampleRate,
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status_t *status,
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AudioSystem::audio_in_acoustics acoustics);
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protected:
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virtual status_t doRouting();
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virtual status_t dump(int fd, const Vector<String16>& args);
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private:
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class A2dpAudioStreamOut : public AudioStreamOut {
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public:
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A2dpAudioStreamOut();
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virtual ~A2dpAudioStreamOut();
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status_t set(int format,
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int channelCount,
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uint32_t sampleRate);
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virtual uint32_t sampleRate() const { return 44100; }
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// SBC codec wants a multiple of 512
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virtual size_t bufferSize() const { return 512 * 20; }
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virtual int channelCount() const { return 2; }
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virtual int format() const { return AudioSystem::PCM_16_BIT; }
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virtual uint32_t latency() const { return ((1000*bufferSize())/frameSize())/sampleRate() + 200; }
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virtual status_t setVolume(float volume) { return INVALID_OPERATION; }
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virtual ssize_t write(const void* buffer, size_t bytes);
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status_t standby();
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virtual status_t dump(int fd, const Vector<String16>& args);
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private:
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friend class A2dpAudioInterface;
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status_t init();
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status_t close();
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status_t close_l();
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status_t setAddress(const char* address);
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status_t setBluetoothEnabled(bool enabled);
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private:
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int mFd;
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bool mStandby;
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int mStartCount;
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int mRetryCount;
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char mA2dpAddress[20];
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void* mData;
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Mutex mLock;
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bool mBluetoothEnabled;
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};
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A2dpAudioStreamOut* mOutput;
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // A2DP_AUDIO_HARDWARE_H
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