cog/Audio/Output/OutputAVFoundation.h

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//
// OutputAVFoundation.h
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// Cog
//
// Created by Christopher Snowhill on 6/23/22.
// Copyright 2022 Christopher Snowhill. All rights reserved.
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//
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#import <AssertMacros.h>
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#import <Cocoa/Cocoa.h>
#import <AVFoundation/AVFoundation.h>
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#import <AudioToolbox/AudioToolbox.h>
#import <AudioUnit/AudioUnit.h>
#import <CoreAudio/AudioHardware.h>
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#import <CoreAudio/CoreAudioTypes.h>
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#ifdef __cplusplus
#import <atomic>
using std::atomic_long;
#else
#import <stdatomic.h>
#endif
#import "Downmix.h"
#import "VisualizationController.h"
//#define OUTPUT_LOG
#ifdef OUTPUT_LOG
#import <stdio.h>
#endif
@class OutputNode;
@interface OutputAVFoundation : NSObject {
OutputNode *outputController;
BOOL r8bFlushing, r8bFlushed, r8bDone;
void *r8bstate, *r8bold;
BOOL stopInvoked;
BOOL running;
BOOL stopping;
BOOL stopped;
BOOL started;
BOOL paused;
BOOL restarted;
BOOL eqEnabled;
BOOL eqInitialized;
BOOL dontRemix;
BOOL streamFormatStarted;
double secondsHdcdSustained;
BOOL defaultdevicelistenerapplied;
BOOL currentdevicelistenerapplied;
BOOL devicealivelistenerapplied;
BOOL observersapplied;
BOOL outputdevicechanged;
float volume;
float eqPreamp;
AudioDeviceID outputDeviceID;
AudioStreamBasicDescription streamFormat; // stream format last seen in render callback
AudioStreamBasicDescription newFormat; // in case of resampler flush
AudioStreamBasicDescription visFormat; // Mono format for vis
uint32_t deviceChannelConfig;
uint32_t streamChannelConfig;
AVSampleBufferAudioRenderer *audioRenderer;
AVSampleBufferRenderSynchronizer *renderSynchronizer;
CMAudioFormatDescriptionRef audioFormatDescription;
AudioChannelLayoutTag streamTag;
id currentPtsObserver;
NSLock *currentPtsLock;
CMTime currentPts, lastPts;
double secondsLatency;
CMTime outputPts, trackPts, lastCheckpointPts;
AudioTimeStamp timeStamp;
size_t _bufferSize;
AudioUnit _eq;
DownmixProcessor *downmixerForVis;
VisualizationController *visController;
float inputBuffer[2048 * 32]; // 2048 samples times maximum supported channel count
float eqBuffer[2048 * 32];
#ifdef OUTPUT_LOG
FILE *_logFile;
#endif
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}
- (id)initWithController:(OutputNode *)c;
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- (BOOL)setup;
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- (OSStatus)setOutputDeviceByID:(AudioDeviceID)deviceID;
- (BOOL)setOutputDeviceWithDeviceDict:(NSDictionary *)deviceDict;
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- (void)start;
- (void)pause;
- (void)resume;
- (void)stop;
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- (void)setVolume:(double)v;
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- (void)setEqualizerEnabled:(BOOL)enabled;
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- (void)sustainHDCD;
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@end