Seeking works?

PlaybackController.m

@@ -129,7 +129,7 @@
 	double time;
 	time = [positionSlider doubleValue];
 	
-	if ([sender tracking] == NO) // check if user stopped sliding  before playing audio
+//	if ([sender tracking] == NO) // check if user stopped sliding  before playing audio
         [soundController seekToTime:time];
 	
 	[self updateTimeField:time];

Sound/BufferChain.h

@@ -26,6 +26,7 @@
 - (id)initWithController:(id)c;
 - (void)buildChain;
 - (BOOL)open:(const char *)filename;
+- (void)seek:(double)time;
 
 - (void)launchThreads;
 

Sound/BufferChain.m

@@ -59,6 +59,13 @@
 	[super dealloc];
 }
 
+- (void)seek:(double)time
+{
+	[inputNode seek:time];
+	[inputNode resetBuffer];
+	[converterNode resetBuffer];
+}
+
 
 - (id)finalNode
 {

Sound/ConverterNode.m

@@ -185,8 +185,8 @@ static OSStatus ACInputProc(AudioConverterRef inAudioConverter, UInt32* ioNumber
 	{
 		return [self convert:dest amount:amount];
 	}
-	if (err != noErr)
-		NSLog(@"Converter error: %i", err);
+//	if (err != noErr)
+//		NSLog(@"Converter error: %i", err);
 
 	return ioData.mBuffers[0].mDataByteSize;
 /*

Sound/InputNode.h

@@ -19,9 +19,14 @@
 	AudioStreamBasicDescription format;
 	
 	SoundFile *soundFile;
+	
+	BOOL shouldSeek;
+	double seekTime;
 }
 
 - (void)process;
 - (AudioStreamBasicDescription) format;
+- (void)seek:(double)time;
+
 
 @end

Sound/InputNode.m

@@ -18,33 +18,47 @@
 	[soundFile getFormat:&format];
 	
 	shouldContinue = YES;
+	shouldSeek = NO;
 }
 
 - (void)process
 {
 	const int chunk_size = CHUNK_SIZE;
-	char buf[chunk_size];
+	char *buf;
 	int amountRead;
 	
 	DBLog(@"Playing file.\n");
+	buf = malloc(chunk_size);
 	
 	while ([self shouldContinue] == YES && [self endOfStream] == NO)
 	{
+		if (shouldSeek == YES)
+		{
+			[soundFile seekToTime:seekTime];
+			shouldSeek = NO;
+		}
+		
 		amountRead = [soundFile fillBuffer:buf ofSize: chunk_size];
 		if (amountRead <= 0)
 		{
 			endOfStream = YES;
 			NSLog(@"END OF INPUT WAS REACHED");
 			[controller endOfInputReached];
-			[soundFile close];
-			return; //eof
+			break; //eof
 		}
 		[self writeData:buf amount:amountRead];
 	}
 	
+	free(buf);
 	[soundFile close];
 }
 
+- (void)seek:(double)time
+{
+	seekTime = time;
+	shouldSeek = YES;
+}
+
 - (AudioStreamBasicDescription) format
 {
 	return format;

Sound/Node.h

@@ -16,6 +16,8 @@
 @interface Node : NSObject {
 	VirtualRingBuffer *buffer;
 	Semaphore *semaphore;
+	NSLock *readLock;
+	NSLock *writeLock;
 	
 	id previousNode;
 	id controller;
@@ -33,12 +35,16 @@
 
 - (void)launchThread;
 
+- (NSLock *)readLock;
+- (NSLock *)writeLock;
+
 - (id)previousNode;
 
 - (BOOL)shouldContinue;
 - (void)setShouldContinue:(BOOL)s;
 
 - (VirtualRingBuffer *)buffer;
+- (void)resetBuffer; //WARNING! DANGER WILL ROBINSON!
 
 - (Semaphore *)semaphore;
 

Sound/Node.m

@@ -17,6 +17,8 @@
 	{
 		buffer = [[VirtualRingBuffer alloc] initWithLength:BUFFER_SIZE];
 		semaphore = [[Semaphore alloc] init];
+		readLock = [[NSLock alloc] init];
+		writeLock = [[NSLock alloc] init];
 		
 		controller = c;
 		previousNode = p;
@@ -33,6 +35,7 @@
 	int amountToCopy, availOutput;
 	int amountLeft = amount;
 	
+	[writeLock lock];
 	while (shouldContinue == YES && amountLeft > 0)
 	{
 		availOutput = [buffer lengthAvailableToWriteReturningPointer:&writePtr];
@@ -56,6 +59,7 @@
 			amountLeft -= amountToCopy;
 		}
 	}
+	[writeLock unlock];
 	
 	return (amount - amountLeft);
 }
@@ -68,15 +72,17 @@
 
 - (void)threadEntry:(id)arg
 {
+	[self retain];
+
 	NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
 	DBLog(@"In thread entry");
-	[self retain];
 
 	[self process];
 
-	[self release];
 
 	[pool release];
+
+	[self release];
 }
 
 - (int)readData:(void *)ptr amount:(int)amount
@@ -85,6 +91,7 @@
 	int amountToCopy;
 	int availInput;
 	
+	[readLock lock];
 	availInput = [[previousNode buffer] lengthAvailableToReadReturningPointer:&readPtr];
 	
 	if (availInput <= amount && [previousNode endOfStream] == YES)
@@ -110,6 +117,7 @@
 		
 		[[previousNode semaphore] signal];
 	}
+	[readLock unlock];
 	
 	return amountToCopy;
 }
@@ -140,6 +148,27 @@
 	return buffer;
 }
 
+- (void)resetBuffer
+{
+	[readLock lock];
+	[writeLock lock];
+
+	[buffer empty];
+	
+	[writeLock unlock];
+	[readLock unlock];
+}
+
+- (NSLock *)readLock
+{
+	return readLock;
+}
+
+- (NSLock *)writeLock
+{
+	return writeLock;
+}
+
 - (Semaphore *)semaphore
 {
 	return semaphore;

Sound/OutputNode.h

@@ -29,6 +29,7 @@
 - (void)setup;
 - (void)process;
 - (void)close;
+- (void)seek:(double)time;
 
 - (int)readData:(void *)ptr amount:(int)amount;
 

Sound/OutputNode.m

@@ -20,6 +20,12 @@
 	[output setup];
 }
 
+- (void)seek:(double)time
+{
+	amountPlayed = time*format.mBytesPerFrame*(format.mSampleRate/1000.0);
+
+}
+
 - (void)process
 {
 	[output start];

Sound/SoundController.m

@@ -90,6 +90,12 @@
 - (void)seekToTime:(double)time
 {
 	//Need to reset everything's buffers, and then seek?
+	/*HACK TO TEST HOW WELL THIS WOULD WORK*/
+	[bufferChain seek:time];
+	[output seek:time];
+	
+	
+	/*END HACK*/
 }
 
 - (void)setVolume:(double)v

Sound/SoundFile/VorbisFile.m

@@ -65,6 +65,10 @@
     return total;
 }
 
+- (void)dealloc
+{
+	NSLog(@"DEALLOCATING VORBIS");
+}
 - (void)close
 {
 	ov_clear(&vorbisRef);