e81531e91e
This doesn't actually create a HAL, but rather a set of helper static libraries that device specific libraries (i.e. the old libaudio pieces) can link against to create a proper audio HAL module. We provide an audio_policy static wrapper and audio hardware interface static wrapper. Change-Id: Ie56195447ad24b83888f752dca24674b0afd8a76 Signed-off-by: Dima Zavin <dima@android.com>
139 lines
5.1 KiB
C++
139 lines
5.1 KiB
C++
/*
|
|
* Copyright (C) 2008 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 A2DP_AUDIO_HARDWARE_H
|
|
#define A2DP_AUDIO_HARDWARE_H
|
|
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <utils/threads.h>
|
|
|
|
#include <hardware_legacy/AudioHardwareBase.h>
|
|
|
|
|
|
namespace android_audio_legacy {
|
|
using android::Mutex;
|
|
|
|
class A2dpAudioInterface : public AudioHardwareBase
|
|
{
|
|
class A2dpAudioStreamOut;
|
|
|
|
public:
|
|
A2dpAudioInterface(AudioHardwareInterface* hw);
|
|
virtual ~A2dpAudioInterface();
|
|
virtual status_t initCheck();
|
|
|
|
virtual status_t setVoiceVolume(float volume);
|
|
virtual status_t setMasterVolume(float volume);
|
|
|
|
virtual status_t setMode(int mode);
|
|
|
|
// mic mute
|
|
virtual status_t setMicMute(bool state);
|
|
virtual status_t getMicMute(bool* state);
|
|
|
|
virtual status_t setParameters(const String8& keyValuePairs);
|
|
virtual String8 getParameters(const String8& keys);
|
|
|
|
virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount);
|
|
|
|
// create I/O streams
|
|
virtual AudioStreamOut* openOutputStream(
|
|
uint32_t devices,
|
|
int *format=0,
|
|
uint32_t *channels=0,
|
|
uint32_t *sampleRate=0,
|
|
status_t *status=0);
|
|
virtual void closeOutputStream(AudioStreamOut* out);
|
|
|
|
virtual AudioStreamIn* openInputStream(
|
|
uint32_t devices,
|
|
int *format,
|
|
uint32_t *channels,
|
|
uint32_t *sampleRate,
|
|
status_t *status,
|
|
AudioSystem::audio_in_acoustics acoustics);
|
|
virtual void closeInputStream(AudioStreamIn* in);
|
|
// static AudioHardwareInterface* createA2dpInterface();
|
|
|
|
protected:
|
|
virtual status_t dump(int fd, const Vector<String16>& args);
|
|
|
|
private:
|
|
class A2dpAudioStreamOut : public AudioStreamOut {
|
|
public:
|
|
A2dpAudioStreamOut();
|
|
virtual ~A2dpAudioStreamOut();
|
|
status_t set(uint32_t device,
|
|
int *pFormat,
|
|
uint32_t *pChannels,
|
|
uint32_t *pRate);
|
|
virtual uint32_t sampleRate() const { return 44100; }
|
|
// SBC codec wants a multiple of 512
|
|
virtual size_t bufferSize() const { return 512 * 20; }
|
|
virtual uint32_t channels() const { return AudioSystem::CHANNEL_OUT_STEREO; }
|
|
virtual int format() const { return AudioSystem::PCM_16_BIT; }
|
|
virtual uint32_t latency() const { return ((1000*bufferSize())/frameSize())/sampleRate() + 200; }
|
|
virtual status_t setVolume(float left, float right) { return INVALID_OPERATION; }
|
|
virtual ssize_t write(const void* buffer, size_t bytes);
|
|
status_t standby();
|
|
virtual status_t dump(int fd, const Vector<String16>& args);
|
|
virtual status_t setParameters(const String8& keyValuePairs);
|
|
virtual String8 getParameters(const String8& keys);
|
|
virtual status_t getRenderPosition(uint32_t *dspFrames);
|
|
|
|
private:
|
|
friend class A2dpAudioInterface;
|
|
status_t init();
|
|
status_t close();
|
|
status_t close_l();
|
|
status_t setAddress(const char* address);
|
|
status_t setBluetoothEnabled(bool enabled);
|
|
status_t setSuspended(bool onOff);
|
|
status_t standby_l();
|
|
|
|
private:
|
|
int mFd;
|
|
bool mStandby;
|
|
int mStartCount;
|
|
int mRetryCount;
|
|
char mA2dpAddress[20];
|
|
void* mData;
|
|
Mutex mLock;
|
|
bool mBluetoothEnabled;
|
|
uint32_t mDevice;
|
|
bool mClosing;
|
|
bool mSuspended;
|
|
nsecs_t mLastWriteTime;
|
|
uint32_t mBufferDurationUs;
|
|
};
|
|
|
|
friend class A2dpAudioStreamOut;
|
|
|
|
A2dpAudioStreamOut* mOutput;
|
|
AudioHardwareInterface *mHardwareInterface;
|
|
char mA2dpAddress[20];
|
|
bool mBluetoothEnabled;
|
|
bool mSuspended;
|
|
};
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
}; // namespace android
|
|
|
|
#endif // A2DP_AUDIO_HARDWARE_H
|