cog/SoundController.m

#import "SoundController.h"
#import "Sound.h"

#import "DBLog.h"

@implementation SoundController

//Note: use distributed objects for communication between Sound and SoundController....each should be in their own threads

- (id)init
{
	self = [super init];
	if (self)
	{
		sound = [[Sound alloc] init];
	}
	
	return self;
}

- (void)awakeFromNib
{
	[timeField setFont:[NSFont systemFontOfSize:18]];

	sendPort = [NSPort port];
	if (sendPort)
	{
		[sendPort setDelegate:self];
		
		NSArray *modes = [NSArray arrayWithObjects:NSDefaultRunLoopMode, NSEventTrackingRunLoopMode, NSModalPanelRunLoopMode, nil];
		NSEnumerator *enumerator;
		NSString *mode;
		
		enumerator = [modes objectEnumerator];
		while ((mode = [enumerator nextObject]))
			[[NSRunLoop currentRunLoop] addPort:sendPort forMode:mode];
		
		
		[NSThread detachNewThreadSelector:@selector(launchThreadWithPort:) toTarget:sound withObject:sendPort];
	}
}


- (IBAction)pauseResume:(id)sender
{
//	DBLog(@"Pause/Resume Sent!");
	[self sendPortMessage:kCogPauseResumeMessage];
}

- (IBAction)pause:(id)sender
{
//	DBLog(@"Pause Sent!");
	[self sendPortMessage:kCogPauseMessage];
}

- (IBAction)resume:(id)sender
{
//	DBLog(@"Resume Sent!");

	[self sendPortMessage:kCogResumeMessage];
}

- (IBAction)stop:(id)sender
{
//	DBLog(@"Stop Sent!");

	waitingForPlay = NO;
	[self sendPortMessage:kCogStopMessage];
}

//called by double-clicking on table
- (void)playEntryAtIndex:(int)i
{
	PlaylistEntry *pe = [[playlistController arrangedObjects] objectAtIndex:i];

	[playlistController setCurrentEntry:pe addToHistory:YES];
	[playlistController reset];

	[self playEntry:pe];
}


- (void)playEntry:(PlaylistEntry *)pe;
{
	waitingForPlay = NO;

//	DBLog(@"PlayEntry: %@ Sent!", [pe filename]);
	
	[self sendPortMessage:kCogPlayFileMessage withString:[pe filename]];
}

- (IBAction)next:(id)sender
{
	waitingForPlay = NO;
	if ([playlistController nextEntry] == nil)
		return;
	
	[playlistController next];
	[self playEntry:[playlistController currentEntry]];
}

- (IBAction)prev:(id)sender
{
	waitingForPlay = NO;
	if ([playlistController prevEntry] == nil)
		return;

	[playlistController prev];
	[self playEntry:[playlistController currentEntry]];
}

- (IBAction)seek:(id)sender
{
//	DBLog(@"SEEKING?");
	double time;
	time = [positionSlider doubleValue];
	[self sendPortMessage:kCogSeekMessage withData:&time ofSize:(sizeof(double))];
	
	int sec = (int)(time/1000.0);
	NSString *text;
	text = [NSString stringWithFormat:@"%i:%02i", sec/60, sec%60];
	[timeField setStringValue:text];	
}

- (void)sendPortMessage:(int)msgid
{
	NSPortMessage *portMessage = [[NSPortMessage alloc] initWithSendPort:distantPort receivePort:sendPort components:nil];
	
	if (portMessage)
	{
		[portMessage setMsgid:msgid];
		[portMessage sendBeforeDate:[NSDate date]];
		[portMessage release];
	}	
}

- (void)sendPortMessage:(int)msgid withData:(void *)data ofSize:(int)size
{
	NSPortMessage *portMessage;
	NSData *d = [[NSData alloc] initWithBytes:data length:size];
	NSArray *a = [[NSArray alloc] initWithObjects:d,nil];
	portMessage = [[NSPortMessage alloc] initWithSendPort:distantPort receivePort:sendPort components:a];
	
	[a release];
	[d release];
	
	if (portMessage)
	{
		NSDate *date = [[NSDate alloc] init];
		
		[portMessage setMsgid:msgid];
		[portMessage sendBeforeDate:date];
		
		[date release];
		[portMessage release];
	}
	
}

- (void)sendPortMessage:(int)msgid withString:(NSString *)s
{
	NSData *dataString = [s dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:NO];

	NSPortMessage *portMessage = [[NSPortMessage alloc] initWithSendPort:distantPort receivePort:sendPort components:[NSArray arrayWithObject:dataString]];
	
	if (portMessage)
	{
		[portMessage setMsgid:msgid];
		[portMessage sendBeforeDate:[NSDate date]];

		[portMessage release];
	}
}

- (void)handlePortMessage:(NSPortMessage *)portMessage
{
	
    unsigned int message = [portMessage msgid];
//	DBLog(@"SOUNDCONTROLLER RECEIVED MESSAGE");
    if (message == kCogCheckinMessage)
    {
        // Get the worker thread<61>s communications port.
//		DBLog(@"CHECKIN RECEIVED");
        distantPort = [portMessage sendPort];

        // Retain and save the worker port for later use.
		[distantPort retain];
    }
    else if (message == kCogRequestNextFileMessage)
    {
		PlaylistEntry *pe;
		
		pe = [playlistController nextEntry];

		if (pe == nil)
		{
			[self sendPortMessage:kCogEndOfPlaylistMessage];
		}
		else
		{
			DBLog(@"REQUESTING");
			waitingForPlay = YES;
			
			[self sendPortMessage:kCogChangeFileMessage withString:[pe filename]];
		}
	}
	else if (message == kCogFileChangedMessage)
	{
		DBLog(@"FILE CHANGED");
		if (waitingForPlay == YES)
		{
			waitingForPlay = NO;
			[playlistController next];
			[timeField setStringValue:@"0:00"];
		}
	}
	else if (message == kCogBitrateUpdateMessage)
	{
		NSArray* components = [portMessage components];
		NSData *data = [components objectAtIndex:0];
		
		int bitrate;
		bitrate = (*(int *)[data bytes]);
		//		DBLog(@"Received length update: %f", max);
//		[bitrateField setIntValue:bitrate];
	}
	else if (message == kCogLengthUpdateMessage)
	{
		NSArray* components = [portMessage components];
		NSData *data = [components objectAtIndex:0];
		
		double max;
		max = (*(double *)[data bytes]);
//		DBLog(@"Received length update: %f", max);
		[positionSlider setMaxValue:max];
		[positionSlider setDoubleValue:0];
//		DBLog(@"Length changed: %f", max);
//		[lengthField setDoubleValue:max/1000.0];
	}
	else if (message = kCogPositionUpdateMessage)
	{
		NSArray* components = [portMessage components];
		NSData *data = [components objectAtIndex:0];

		double pos;
		pos = (*(double *)[data bytes]);

		if ([positionSlider tracking] == NO)
		{
			//		DBLog(@"Received pos update: %f", pos);
			[positionSlider setDoubleValue:pos];
		}

		int sec = (int)(pos/1000.0);
		NSString *text;
		text = [NSString stringWithFormat:@"%i:%02i", sec/60, sec%60];
		[timeField setStringValue:text];
	}
}

@end