3f7ec658fe
Make the output device a node as well, so that its buffer can be pulled from by the HRTF and downmix nodes, which are then fed off by the output callback, to reduce the head tracking latency as much as possible. Signed-off-by: Christopher Snowhill <kode54@gmail.com>
137 lines
2.5 KiB
Objective-C
137 lines
2.5 KiB
Objective-C
//
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// OutputCoreAudio.h
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// Cog
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//
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// Created by Christopher Snowhill on 7/25/23.
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// Copyright 2023-2024 Christopher Snowhill. All rights reserved.
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//
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#import <AssertMacros.h>
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#import <Cocoa/Cocoa.h>
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#import <AVFoundation/AVFoundation.h>
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#import <AudioToolbox/AudioToolbox.h>
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#import <AudioUnit/AudioUnit.h>
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#import <CoreAudio/AudioHardware.h>
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#import <CoreAudio/CoreAudioTypes.h>
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#ifdef __cplusplus
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#import <atomic>
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using std::atomic_long;
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#else
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#import <stdatomic.h>
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#endif
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#import <simd/simd.h>
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#import <CogAudio/ChunkList.h>
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#import <CogAudio/Node.h>
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#import <CogAudio/DSPDownmixNode.h>
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#import <CogAudio/DSPHRTFNode.h>
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//#define OUTPUT_LOG
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@class OutputNode;
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@class AudioChunk;
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@interface OutputCoreAudio : Node {
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OutputNode *outputController;
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NSLock *outputLock;
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double streamTimestamp;
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BOOL stopInvoked;
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BOOL stopCompleted;
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BOOL running;
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BOOL stopping;
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BOOL stopped;
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BOOL started;
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BOOL paused;
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BOOL restarted;
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BOOL commandStop;
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BOOL resetting;
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BOOL cutOffInput;
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BOOL fading, faded;
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float fadeLevel;
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float fadeStep;
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float fadeTarget;
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BOOL eqEnabled;
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BOOL eqInitialized;
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BOOL streamFormatStarted;
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BOOL streamFormatChanged;
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double secondsHdcdSustained;
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BOOL defaultdevicelistenerapplied;
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BOOL currentdevicelistenerapplied;
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BOOL devicealivelistenerapplied;
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BOOL observersapplied;
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BOOL outputdevicechanged;
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float volume;
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float eqPreamp;
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AVAudioFormat *_deviceFormat;
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AudioDeviceID outputDeviceID;
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AudioStreamBasicDescription deviceFormat;
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AudioStreamBasicDescription realStreamFormat; // stream format pre-hrtf
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AudioStreamBasicDescription streamFormat; // stream format last seen in render callback
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uint32_t deviceChannelConfig;
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uint32_t realStreamChannelConfig;
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uint32_t streamChannelConfig;
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AUAudioUnit *_au;
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size_t _bufferSize;
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BOOL resetStreamFormat;
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BOOL shouldPlayOutBuffer;
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BOOL DSPsLaunched;
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DSPHRTFNode *hrtfNode;
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DSPDownmixNode *downmixNode;
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#ifdef OUTPUT_LOG
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NSFileHandle *_logFile;
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#endif
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}
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- (id)initWithController:(OutputNode *)c;
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- (BOOL)setup;
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- (OSStatus)setOutputDeviceByID:(int)deviceID;
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- (BOOL)setOutputDeviceWithDeviceDict:(NSDictionary *)deviceDict;
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- (void)start;
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- (void)pause;
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- (void)resume;
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- (void)stop;
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- (void)fadeOut;
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- (void)fadeOutBackground;
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- (void)fadeIn;
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- (double)latency;
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- (double)volume;
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- (void)setVolume:(double)v;
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- (void)setShouldPlayOutBuffer:(BOOL)enabled;
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- (void)sustainHDCD;
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- (AudioStreamBasicDescription)deviceFormat;
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- (uint32_t)deviceChannelConfig;
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- (DSPDownmixNode *)downmix;
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@end
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