cog/Audio/Chain/BufferChain.m

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//
// BufferChain.m
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// CogNew
//
// Created by Vincent Spader on 1/4/06.
// Copyright 2006 Vincent Spader. All rights reserved.
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//
#import "BufferChain.h"
#import "OutputNode.h"
#import "AudioSource.h"
#import "CoreAudioUtils.h"
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@implementation BufferChain
- (id)initWithController:(id)c
{
self = [super init];
if (self)
{
controller = c;
streamURL = nil;
userInfo = nil;
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inputNode = nil;
converterNode = nil;
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}
return self;
}
- (void)buildChain
{
[inputNode release];
[converterNode release];
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inputNode = [[InputNode alloc] initWithController:self previous:nil];
converterNode = [[ConverterNode alloc] initWithController:self previous:inputNode];
finalNode = converterNode;
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}
- (BOOL)open:(NSURL *)url withOutputFormat:(AudioStreamBasicDescription)outputFormat
{
[self setStreamURL:url];
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[self buildChain];
id<CogSource> source = [AudioSource audioSourceForURL:url];
NSLog(@"Opening: %@", url);
if (![source open:url])
{
NSLog(@"Couldn't open source...");
return NO;
}
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if (![inputNode openWithSource:source])
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return NO;
if (![converterNode setupWithInputFormat:propertiesToASBD([inputNode properties]) outputFormat:outputFormat])
return NO;
// return NO;
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return YES;
}
- (BOOL)openWithInput:(InputNode *)i withOutputFormat:(AudioStreamBasicDescription)outputFormat
{
NSLog(@"New buffer chain!");
[self buildChain];
if (![inputNode openWithDecoder:[i decoder]])
return NO;
NSLog(@"Input Properties: %@", [inputNode properties]);
if (![converterNode setupWithInputFormat:propertiesToASBD([inputNode properties]) outputFormat:outputFormat])
return NO;
return YES;
}
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- (void)launchThreads
{
NSLog(@"Properties: %@", [inputNode properties]);
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[inputNode launchThread];
[converterNode launchThread];
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}
- (void)setUserInfo:(id)i
{
[i retain];
[userInfo release];
userInfo = i;
}
- (id)userInfo
{
return userInfo;
}
- (void)dealloc
{
[userInfo release];
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[streamURL release];
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[inputNode release];
[converterNode release];
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NSLog(@"Bufferchain dealloc");
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[super dealloc];
}
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- (void)seek:(double)time
{
long frame = time * [[[inputNode properties] objectForKey:@"sampleRate"] floatValue];
[inputNode seek:frame];
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}
- (BOOL)endOfInputReached
{
return [controller endOfInputReached:self];
}
- (BOOL)setTrack: (NSURL *)track
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{
return [inputNode setTrack:track];
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}
- (void)initialBufferFilled:(id)sender
{
NSLog(@"INITIAL BUFFER FILLED");
[controller launchOutputThread];
}
- (void)inputFormatDidChange:(AudioStreamBasicDescription)format
{
NSLog(@"FORMAT DID CHANGE!");
}
- (InputNode *)inputNode
{
return inputNode;
}
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- (id)finalNode
{
return finalNode;
}
- (NSURL *)streamURL
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{
return streamURL;
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}
- (void)setStreamURL:(NSURL *)url
{
[url retain];
[streamURL release];
streamURL = url;
}
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- (void)setShouldContinue:(BOOL)s
{
[inputNode setShouldContinue:s];
[converterNode setShouldContinue:s];
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}
@end