138 lines
2.2 KiB
Objective-C
138 lines
2.2 KiB
Objective-C
//
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// BufferChain.m
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// CogNew
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//
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// Created by Vincent Spader on 1/4/06.
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// Copyright 2006 Vincent Spader. All rights reserved.
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//
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#import "BufferChain.h"
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#import "OutputNode.h"
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#import "CoreAudioUtils.h"
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@implementation BufferChain
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- (id)initWithController:(id)c
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{
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self = [super init];
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if (self)
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{
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controller = c;
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streamURL = nil;
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userInfo = nil;
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inputNode = nil;
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converterNode = nil;
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}
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return self;
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}
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- (void)buildChain
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{
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[inputNode release];
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[converterNode release];
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inputNode = [[InputNode alloc] initWithController:self previous:nil];
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converterNode = [[ConverterNode alloc] initWithController:self previous:inputNode];
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finalNode = converterNode;
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}
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- (BOOL)open:(NSURL *)url withOutputFormat:(AudioStreamBasicDescription)outputFormat
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{
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[url retain];
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[streamURL release];
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streamURL = url;
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[self buildChain];
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if (![inputNode open:url])
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return NO;
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AudioStreamBasicDescription inputFormat;
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inputFormat = propertiesToASBD([inputNode properties]);
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[converterNode setupWithInputFormat:inputFormat outputFormat:outputFormat ];
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return YES;
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}
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- (void)launchThreads
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{
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DBLog(@"LAUNCHING THREAD FOR INPUT");
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[inputNode launchThread];
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DBLog(@"LAUNCHING THREAD FOR CONVERTER");
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[converterNode launchThread];
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}
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- (void)setUserInfo:(id)i
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{
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[i retain];
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[userInfo release];
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userInfo = i;
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}
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- (id)userInfo
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{
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return userInfo;
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}
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- (void)dealloc
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{
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[userInfo release];
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[inputNode release];
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[converterNode release];
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[super dealloc];
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}
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- (void)seek:(double)time
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{
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NSLog(@"SEEKING IN BUFFERCHIAN");
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[inputNode seek:time];
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[[converterNode readLock] lock];
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[[converterNode writeLock] lock];
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[[inputNode readLock] lock];
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[[inputNode writeLock] lock];
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//Signal so its waiting when we unlock
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[[converterNode semaphore] signal];
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[[inputNode semaphore] signal];
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[converterNode resetBuffer];
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[inputNode resetBuffer];
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[[inputNode writeLock] unlock];
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[[inputNode readLock] unlock];
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[[converterNode writeLock] unlock];
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[[converterNode readLock] unlock];
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}
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- (void)endOfInputReached
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{
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[controller endOfInputReached:self];
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}
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- (id)finalNode
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{
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return finalNode;
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}
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- (NSURL *)streamURL
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{
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return streamURL;
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}
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- (void)setShouldContinue:(BOOL)s
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{
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[inputNode setShouldContinue:s];
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[converterNode setShouldContinue:s];
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}
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@end
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