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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 <utils/IInterface.h>
#include <media/IAudioTrack.h>
#include <media/IAudioRecord.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 bufferCount,
uint32_t flags) = 0;
virtual sp<IAudioRecord> openRecord(
pid_t pid,
int streamType,
uint32_t sampleRate,
int format,
int channelCount,
int bufferCount,
uint32_t flags) = 0;
/* query the audio hardware state. This state never changes,
* and therefore can be cached.
*/
virtual uint32_t sampleRate() const = 0;
virtual int channelCount() const = 0;
virtual int format() const = 0;
virtual size_t frameCount() 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) = 0;
virtual status_t setStreamMute(int stream, bool muted) = 0;
virtual float streamVolume(int stream) const = 0;
virtual bool streamMute(int stream) const = 0;
// set/get audio routing
virtual status_t setRouting(int mode, uint32_t routes, uint32_t mask) = 0;
virtual uint32_t getRouting(int mode) const = 0;
// set/get audio mode
virtual status_t setMode(int mode) = 0;
virtual int getMode() const = 0;
// mic mute/state
virtual status_t setMicMute(bool state) = 0;
virtual bool getMicMute() const = 0;
// is a music stream active?
virtual bool isMusicActive() const = 0;
// pass a generic configuration parameter to libaudio
// Temporary interface, do not use
// TODO: Replace with a more generic key:value get/set mechanism
virtual status_t setParameter(const char* key, const char* value) = 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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