WIP: Attempt to actually use the custom icons

Signed-off-by: Christopher Snowhill <kode54@gmail.com>

Audio/Chain/OutputNode.m

@@ -13,8 +13,10 @@
 
 #import "DSPRubberbandNode.h"
 #import "DSPFSurroundNode.h"
+#import "DSPHRTFNode.h"
 #import "DSPEqualizerNode.h"
 #import "VisualizationNode.h"
+#import "DSPDownmixNode.h"
 
 #import "Logging.h"
 
@@ -25,7 +27,9 @@
 
 	DSPRubberbandNode *rubberbandNode;
 	DSPFSurroundNode *fsurroundNode;
+	DSPHRTFNode *hrtfNode;
 	DSPEqualizerNode *equalizerNode;
+	DSPDownmixNode *downmixNode;
 	VisualizationNode *visualizationNode;
 }
 
@@ -57,9 +61,13 @@
 		if(!fsurroundNode) return NO;
 		equalizerNode = [[DSPEqualizerNode alloc] initWithController:self previous:fsurroundNode latency:0.03];
 		if(!equalizerNode) return NO;
+		hrtfNode = [[DSPHRTFNode alloc] initWithController:self previous:equalizerNode latency:0.03];
+		if(!hrtfNode) return NO;
+		downmixNode = [[DSPDownmixNode alloc] initWithController:self previous:hrtfNode latency:0.03];
+		if(!downmixNode) return NO;
 
 		// Approximately double the chunk size for Vis at 44100Hz
-		visualizationNode = [[VisualizationNode alloc] initWithController:self previous:equalizerNode latency:8192.0 / 44100.0];
+		visualizationNode = [[VisualizationNode alloc] initWithController:self previous:downmixNode latency:8192.0 / 44100.0];
 		if(!visualizationNode) return NO;
 
 		[self setPreviousNode:visualizationNode];
@@ -163,7 +171,7 @@
 
 - (NSArray *)DSPs {
 	if(DSPsLaunched) {
-		return @[rubberbandNode, fsurroundNode, equalizerNode, visualizationNode];
+		return @[rubberbandNode, fsurroundNode, equalizerNode, hrtfNode, downmixNode, visualizationNode];
 	} else {
 		return @[];
 	}
@@ -280,11 +288,7 @@
 				formatChanged = YES;
 			}
 		}
-		DSPDownmixNode *downmixNode = nil;
-		if(output) {
-			downmixNode = [output downmix];
-		}
-		if(downmixNode && !formatChanged) {
+		if(downmixNode && output && !formatChanged) {
 			outputFormat = [output deviceFormat];
 			outputChannelConfig = [output deviceChannelConfig];
 			AudioStreamBasicDescription currentOutputFormat = [downmixNode nodeFormat];
@@ -299,7 +303,7 @@
 			if(converter) {
 				[converter setOutputFormat:format];
 			}
-			if(downmixNode) {
+			if(downmixNode && output) {
 				[downmixNode setOutputFormat:[output deviceFormat] withChannelConfig:[output deviceChannelConfig]];
 			}
 			if(inputNode) {
@@ -323,6 +327,8 @@
 		}
 		previousNode = nil;
 		visualizationNode = nil;
+		downmixNode = nil;
+		hrtfNode = nil;
 		fsurroundNode = nil;
 		rubberbandNode = nil;
 		previousInput = nil;
@@ -387,7 +393,7 @@
 }
 
 - (id)downmix {
-	return [output downmix];
+	return downmixNode;
 }
 
 @end

Audio/Output/OutputCoreAudio.h

@@ -25,11 +25,7 @@ using std::atomic_long;
 #import <simd/simd.h>
 
 #import <CogAudio/ChunkList.h>
-
-#import <CogAudio/Node.h>
-
-#import <CogAudio/DSPDownmixNode.h>
-#import <CogAudio/DSPHRTFNode.h>
+#import <CogAudio/HeadphoneFilter.h>
 
 //#define OUTPUT_LOG
 
@@ -37,9 +33,12 @@ using std::atomic_long;
 
 @class AudioChunk;
 
-@interface OutputCoreAudio : Node {
+@interface OutputCoreAudio : NSObject {
 	OutputNode *outputController;
 
+	dispatch_semaphore_t writeSemaphore;
+	dispatch_semaphore_t readSemaphore;
+
 	NSLock *outputLock;
 
 	double streamTimestamp;
@@ -97,9 +96,7 @@ using std::atomic_long;
 	
 	BOOL shouldPlayOutBuffer;
 
-	BOOL DSPsLaunched;
-	DSPHRTFNode *hrtfNode;
-	DSPDownmixNode *downmixNode;
+	ChunkList *outputBuffer;
 
 #ifdef OUTPUT_LOG
 	NSFileHandle *_logFile;
@@ -132,6 +129,4 @@ using std::atomic_long;
 - (AudioStreamBasicDescription)deviceFormat;
 - (uint32_t)deviceChannelConfig;
 
-- (DSPDownmixNode *)downmix;
-
 @end

Audio/Output/OutputCoreAudio.m

@@ -133,10 +133,6 @@ static void *kOutputCoreAudioContext = &kOutputCoreAudioContext;
 - (id)initWithController:(OutputNode *)c {
 	self = [super init];
 	if(self) {
-		buffer = [[ChunkList alloc] initWithMaximumDuration:0.5];
-		writeSemaphore = [[Semaphore alloc] init];
-		readSemaphore = [[Semaphore alloc] init];
-
 		outputController = c;
 		volume = 1.0;
 		outputDeviceID = -1;
@@ -212,26 +208,6 @@ current_device_listener(AudioObjectID inObjectID, UInt32 inNumberAddresses, cons
 	return NO;
 }
 
-- (NSArray *)DSPs {
-	if(DSPsLaunched) {
-		return @[hrtfNode, downmixNode];
-	} else {
-		return @[];
-	}
-}
-
-- (DSPDownmixNode *)downmix {
-	return downmixNode;
-}
-
-- (void)launchDSPs {
-	NSArray *DSPs = [self DSPs];
-
-	for (Node *node in DSPs) {
-		[node launchThread];
-	}
-}
-
 - (void)threadEntry:(id)arg {
 	@autoreleasepool {
 		NSThread *currentThread = [NSThread currentThread];
@@ -260,15 +236,14 @@ current_device_listener(AudioObjectID inObjectID, UInt32 inNumberAddresses, cons
 				[outputLock lock];
 				started = NO;
 				restarted = NO;
-				[buffer reset];
-				[self setShouldReset:YES];
+				[outputBuffer reset];
 				[outputLock unlock];
 			}
 
 			if(stopping)
 				break;
 
-			if(!cutOffInput && ![buffer isFull]) {
+			if(!cutOffInput && ![outputBuffer isFull]) {
 				[self renderAndConvert];
 				rendered = YES;
 			} else {
@@ -581,8 +556,7 @@ current_device_listener(AudioObjectID inObjectID, UInt32 inNumberAddresses, cons
 		[outputController setFormat:&deviceFormat channelConfig:deviceChannelConfig];
 		
 		[outputLock lock];
-		[buffer reset];
-		[self setShouldReset:YES];
+		[outputBuffer reset];
 		[outputLock unlock];
 
 		if(started) {
@@ -665,9 +639,8 @@ current_device_listener(AudioObjectID inObjectID, UInt32 inNumberAddresses, cons
 	size_t frameCount = 0;
 	if(chunk && (frameCount = [chunk frameCount])) {
 		[outputLock lock];
-		[buffer addChunk:chunk];
+		[outputBuffer addChunk:chunk];
 		[outputLock unlock];
-		[readSemaphore signal];
 	}
 	
 	if(streamFormatChanged) {
@@ -718,8 +691,8 @@ current_device_listener(AudioObjectID inObjectID, UInt32 inNumberAddresses, cons
 				while(renderedSamples < frameCount) {
 					[refLock lock];
 					AudioChunk *chunk = nil;
-					if(![_self->downmixNode.buffer isEmpty]) {
-						chunk = [self->downmixNode.buffer removeSamples:frameCount - renderedSamples];
+					if(_self->outputBuffer && ![_self->outputBuffer isEmpty]) {
+						chunk = [_self->outputBuffer removeSamples:frameCount - renderedSamples];
 					}
 					[refLock unlock];
 
@@ -854,19 +827,15 @@ current_device_listener(AudioObjectID inObjectID, UInt32 inNumberAddresses, cons
 
 		visController = [VisualizationController sharedController];
 
-		hrtfNode = [[DSPHRTFNode alloc] initWithController:self previous:self latency:0.03];
-		downmixNode = [[DSPDownmixNode alloc] initWithController:self previous:hrtfNode latency:0.03];
-
-		[self setShouldContinue:YES];
-		[self setEndOfStream:NO];
-
-		DSPsLaunched = YES;
-		[self launchDSPs];
-
 		[[NSUserDefaultsController sharedUserDefaultsController] addObserver:self forKeyPath:@"values.outputDevice" options:0 context:kOutputCoreAudioContext];
 
 		observersapplied = YES;
 		
+		outputBuffer = [[ChunkList alloc] initWithMaximumDuration:0.5];
+		if(!outputBuffer) {
+			return NO;
+		}
+
 		return (err == nil);
 	}
 }
@@ -888,7 +857,7 @@ current_device_listener(AudioObjectID inObjectID, UInt32 inNumberAddresses, cons
 }
 
 - (double)latency {
-	return [buffer listDuration] + [[hrtfNode buffer] listDuration] + [[downmixNode buffer] listDuration];
+	return [outputBuffer listDuration];
 }
 
 - (void)start {
@@ -963,14 +932,6 @@ current_device_listener(AudioObjectID inObjectID, UInt32 inNumberAddresses, cons
 				usleep(5000);
 			}
 		}
-		if(DSPsLaunched) {
-			[self setShouldContinue:NO];
-			[hrtfNode setShouldContinue:NO];
-			[downmixNode setShouldContinue:NO];
-			hrtfNode = nil;
-			downmixNode = nil;
-			DSPsLaunched = NO;
-		}
 #ifdef OUTPUT_LOG
 		if(_logFile) {
 			[_logFile closeFile];
@@ -1034,9 +995,9 @@ current_device_listener(AudioObjectID inObjectID, UInt32 inNumberAddresses, cons
 	cutOffInput = YES;
 	[outputLock lock];
 	[fadedBuffersLock lock];
-	FadedBuffer *fbuffer = [[FadedBuffer alloc] initWithBuffer:buffer fadeTarget:0.0 sampleRate:deviceFormat.mSampleRate];
-	buffer = [[ChunkList alloc] initWithMaximumDuration:0.5];
-	[fadedBuffers addObject:fbuffer];
+	FadedBuffer *buffer = [[FadedBuffer alloc] initWithBuffer:outputBuffer fadeTarget:0.0 sampleRate:deviceFormat.mSampleRate];
+	outputBuffer = [[ChunkList alloc] initWithMaximumDuration:0.5];
+	[fadedBuffers addObject:buffer];
 	[fadedBuffersLock unlock];
 	[outputLock unlock];
 	cutOffInput = NO;