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/*
* Copyright (C) 2015 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.
*/
#pragma once
#include "Ports.h"
#include "ApmImplDefinitions.h"
#include <utils/Errors.h>
#include <utils/Timers.h>
#include <system/audio.h>
namespace android {
class IOProfile;
class AudioMix;
// descriptor for audio outputs. Used to maintain current configuration of each opened audio output
// and keep track of the usage of this output by each audio stream type.
class AudioOutputDescriptor: public AudioPortConfig
{
public:
AudioOutputDescriptor(const sp<IOProfile>& profile);
status_t dump(int fd);
audio_devices_t device() const;
void changeRefCount(audio_stream_type_t stream, int delta);
bool isDuplicated() const { return (mOutput1 != NULL && mOutput2 != NULL); }
audio_devices_t supportedDevices();
uint32_t latency();
bool sharesHwModuleWith(const sp<AudioOutputDescriptor> outputDesc);
bool isActive(uint32_t inPastMs = 0) const;
bool isStreamActive(audio_stream_type_t stream,
uint32_t inPastMs = 0,
nsecs_t sysTime = 0) const;
virtual void toAudioPortConfig(struct audio_port_config *dstConfig,
const struct audio_port_config *srcConfig = NULL) const;
virtual sp<AudioPort> getAudioPort() const { return mProfile; }
void toAudioPort(struct audio_port *port) const;
audio_port_handle_t mId;
audio_io_handle_t mIoHandle; // output handle
uint32_t mLatency; //
audio_output_flags_t mFlags; //
audio_devices_t mDevice; // current device this output is routed to
AudioMix *mPolicyMix; // non NULL when used by a dynamic policy
audio_patch_handle_t mPatchHandle;
uint32_t mRefCount[AUDIO_STREAM_CNT]; // number of streams of each type using this output
nsecs_t mStopTime[AUDIO_STREAM_CNT];
sp<AudioOutputDescriptor> mOutput1; // used by duplicated outputs: first output
sp<AudioOutputDescriptor> mOutput2; // used by duplicated outputs: second output
float mCurVolume[AUDIO_STREAM_CNT]; // current stream volume
int mMuteCount[AUDIO_STREAM_CNT]; // mute request counter
const sp<IOProfile> mProfile; // I/O profile this output derives from
bool mStrategyMutedByDevice[NUM_STRATEGIES]; // strategies muted because of incompatible
// device selection. See checkDeviceMuteStrategies()
uint32_t mDirectOpenCount; // number of clients using this output (direct outputs only)
};
}; // namespace android
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