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/*
* Copyright (C) 2007 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 ANDROID_IAUDIOFLINGER_H
#define ANDROID_IAUDIOFLINGER_H
#include <stdint.h>
#include <sys/types.h>
#include <unistd.h>
#include <utils/RefBase.h>
#include <utils/Errors.h>
#include <binder/IInterface.h>
#include <media/IAudioTrack.h>
#include <media/IAudioRecord.h>
#include <media/IAudioFlingerClient.h>
#include <utils/String8.h>
namespace android {
// ----------------------------------------------------------------------------
class IAudioFlinger : public IInterface
{
public:
DECLARE_META_INTERFACE(AudioFlinger);
/* create an audio track and registers it with AudioFlinger.
* return null if the track cannot be created.
*/
virtual sp<IAudioTrack> createTrack(
pid_t pid,
int streamType,
uint32_t sampleRate,
int format,
int channelCount,
int frameCount,
uint32_t flags,
const sp<IMemory>& sharedBuffer,
int output,
status_t *status) = 0;
virtual sp<IAudioRecord> openRecord(
pid_t pid,
int input,
uint32_t sampleRate,
int format,
int channelCount,
int frameCount,
uint32_t flags,
status_t *status) = 0;
/* query the audio hardware state. This state never changes,
* and therefore can be cached.
*/
virtual uint32_t sampleRate(int output) const = 0;
virtual int channelCount(int output) const = 0;
virtual int format(int output) const = 0;
virtual size_t frameCount(int output) const = 0;
virtual uint32_t latency(int output) const = 0;
/* set/get the audio hardware state. This will probably be used by
* the preference panel, mostly.
*/
virtual status_t setMasterVolume(float value) = 0;
virtual status_t setMasterMute(bool muted) = 0;
virtual float masterVolume() const = 0;
virtual bool masterMute() const = 0;
/* set/get stream type state. This will probably be used by
* the preference panel, mostly.
*/
virtual status_t setStreamVolume(int stream, float value, int output) = 0;
virtual status_t setStreamMute(int stream, bool muted) = 0;
virtual float streamVolume(int stream, int output) const = 0;
virtual bool streamMute(int stream) const = 0;
// set audio mode
virtual status_t setMode(int mode) = 0;
// mic mute/state
virtual status_t setMicMute(bool state) = 0;
virtual bool getMicMute() const = 0;
// is any track active on this stream?
virtual bool isStreamActive(int stream) const = 0;
virtual status_t setParameters(int ioHandle, const String8& keyValuePairs) = 0;
virtual String8 getParameters(int ioHandle, const String8& keys) = 0;
// register a current process for audio output change notifications
virtual void registerClient(const sp<IAudioFlingerClient>& client) = 0;
// retrieve the audio recording buffer size
virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount) = 0;
virtual int openOutput(uint32_t *pDevices,
uint32_t *pSamplingRate,
uint32_t *pFormat,
uint32_t *pChannels,
uint32_t *pLatencyMs,
uint32_t flags) = 0;
virtual int openDuplicateOutput(int output1, int output2) = 0;
virtual status_t closeOutput(int output) = 0;
virtual status_t suspendOutput(int output) = 0;
virtual status_t restoreOutput(int output) = 0;
virtual int openInput(uint32_t *pDevices,
uint32_t *pSamplingRate,
uint32_t *pFormat,
uint32_t *pChannels,
uint32_t acoustics) = 0;
virtual status_t closeInput(int input) = 0;
virtual status_t setStreamOutput(uint32_t stream, int output) = 0;
virtual status_t setVoiceVolume(float volume) = 0;
virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output) = 0;
};
// ----------------------------------------------------------------------------
class BnAudioFlinger : public BnInterface<IAudioFlinger>
{
public:
virtual status_t onTransact( uint32_t code,
const Parcel& data,
Parcel* reply,
uint32_t flags = 0);
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_IAUDIOFLINGER_H
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