blob: a24bc711f907ab1fd0efa3acd08704c177160e0e [file] [log] [blame]
** Copyright 2012, 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
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** See the License for the specific language governing permissions and
** limitations under the License.
#include <stdint.h>
#include <sys/types.h>
#include <common_time/local_clock.h>
#include <hardware/audio.h>
#include <media/AudioParameter.h>
#include "AudioOutput.h"
namespace android {
class AudioHardwareOutput;
class AudioStreamOut {
AudioStreamOut(AudioHardwareOutput& owner, bool mcOut);
uint32_t latency() const;
status_t getRenderPosition(uint32_t *dspFrames);
status_t getPresentationPosition(uint64_t *frames, struct timespec *timestamp);
status_t getNextWriteTimestamp(int64_t *timestamp);
status_t standby();
status_t pause();
status_t resume();
status_t flush();
status_t dump(int fd);
uint32_t sampleRate() const { return mInputSampleRate; }
uint32_t outputSampleRate() const;
size_t bufferSize() const { return mInputBufSize; }
uint32_t chanMask() const { return mInputChanMask; }
audio_format_t format() const { return mInputFormat; }
uint32_t framesPerChunk() const { return mInputChunkFrames; }
uint32_t nomChunksInFlight() const { return mInputNominalChunksInFlight; }
status_t set(audio_format_t *pFormat,
uint32_t *pChannels,
uint32_t *pRate);
void setTgtDevices(uint32_t tgtDevices);
status_t setParameters(struct audio_stream *stream,
const char *kvpairs);
char* getParameters(const char* keys);
const char* getName() const { return mIsMCOutput ? "Multi-channel"
: "Main"; }
ssize_t write(const void* buffer, size_t bytes);
Mutex mLock;
Mutex mRoutingLock;
// Track frame position for timestamps, etc.
uint64_t mRenderPosition;
uint64_t mPresentationPosition;
// Our HAL, used as the middle-man to collect and trade AudioOutputs.
AudioHardwareOutput& mOwnerHAL;
// Details about the format of the audio we have been configured to receive
// from audio flinger.
uint32_t mInputSampleRate;
uint32_t mInputChanMask;
audio_format_t mInputFormat;
uint32_t mInputNominalChunksInFlight;
// Handy values pre-computed from the audio configuration.
uint32_t mInputBufSize;
uint32_t mInputChanCount;
uint32_t mInputFrameSize;
uint32_t mInputChunkFrames;
uint32_t mInputNominalLatencyUSec;
LinearTransform mLocalTimeToFrames;
// Bookkeeping used to throttle audio flinger when this audio stream has no
// actual physical outputs.
LocalClock mLocalClock;
bool mThrottleValid;
int64_t mWriteStartLT;
int64_t mFramesWritten; // application rate frames, not device rate frames
LinearTransform mUSecToLocalTime;
// State to track which actual outputs are assigned to this output stream.
AudioOutputList mPhysOutputs;
uint32_t mTgtDevices;
bool mTgtDevicesDirty;
uint32_t mAudioFlingerTgtDevices;
// Flag to track if this StreamOut was created to sink a direct output
// multichannel stream.
bool mIsMCOutput;
// Is the stream on standby?
bool mInStandby;
// reduce log spew
bool mReportedAvailFail;
status_t standbyHardware();
void releaseAllOutputs();
void updateTargetOutputs();
void updateInputNums();
void finishedWriteOp(size_t framesWritten, bool needThrottle);
void resetThrottle() { mThrottleValid = false; }
status_t getNextWriteTimestamp_internal(int64_t *timestamp);
void adjustOutputs(int64_t maxTime);
ssize_t writeInternal(const void* buffer, size_t bytes);
} // android