475 lines
11 KiB
Objective-C
475 lines
11 KiB
Objective-C
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// AudioController.m
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// Cog
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//
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// Created by Vincent Spader on 8/7/05.
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// Copyright 2005 Vincent Spader. All rights reserved.
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//
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#import "AudioPlayer.h"
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#import "BufferChain.h"
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#import "OutputNode.h"
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#import "Status.h"
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#import "Helper.h"
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#import "PluginController.h"
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#import "Logging.h"
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@implementation AudioPlayer
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- (id)init
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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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output = NULL;
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bufferChain = NULL;
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outputLaunched = NO;
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endOfInputReached = NO;
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chainQueue = [[NSMutableArray alloc] init];
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}
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return self;
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}
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- (void)setDelegate:(id)d
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{
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delegate = d;
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}
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- (id)delegate {
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return delegate;
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}
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- (void)play:(NSURL *)url
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{
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[self play:url withUserInfo:nil withRGInfo:nil startPaused:NO];
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}
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- (void)play:(NSURL *)url withUserInfo:(id)userInfo withRGInfo:(NSDictionary *)rgi
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{
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[self play:url withUserInfo:userInfo withRGInfo:rgi startPaused:NO];
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}
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- (void)play:(NSURL *)url withUserInfo:(id)userInfo withRGInfo:(NSDictionary *)rgi startPaused:(BOOL)paused
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{
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if (output)
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{
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[output release];
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}
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output = [[OutputNode alloc] initWithController:self previous:nil];
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[output setup];
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[output setVolume: volume];
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@synchronized(chainQueue) {
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for (id anObject in chainQueue)
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{
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[anObject setShouldContinue:NO];
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}
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[chainQueue removeAllObjects];
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endOfInputReached = NO;
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if (bufferChain)
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{
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[bufferChain setShouldContinue:NO];
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[bufferChain release];
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}
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}
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bufferChain = [[BufferChain alloc] initWithController:self];
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[self notifyStreamChanged:userInfo];
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while (![bufferChain open:url withOutputFormat:[output format] withRGInfo:rgi])
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{
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[bufferChain release];
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bufferChain = nil;
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[self requestNextStream: userInfo];
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url = nextStream;
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if (url == nil)
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{
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return;
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}
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userInfo = nextStreamUserInfo;
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rgi = nextStreamRGInfo;
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[self notifyStreamChanged:userInfo];
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bufferChain = [[BufferChain alloc] initWithController:self];
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}
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[bufferChain setUserInfo:userInfo];
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[self setShouldContinue:YES];
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outputLaunched = NO;
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startedPaused = paused;
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initialBufferFilled = NO;
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[bufferChain launchThreads];
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if (paused)
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[self setPlaybackStatus:kCogStatusPaused waitUntilDone:YES];
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}
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- (void)stop
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{
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//Set shouldoContinue to NO on allll things
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[self setShouldContinue:NO];
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[self setPlaybackStatus:kCogStatusStopped waitUntilDone:YES];
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}
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- (void)pause
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{
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[output pause];
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[self setPlaybackStatus:kCogStatusPaused waitUntilDone:YES];
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}
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- (void)resume
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{
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if (startedPaused)
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{
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startedPaused = NO;
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if (initialBufferFilled)
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[self launchOutputThread];
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}
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[output resume];
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[self setPlaybackStatus:kCogStatusPlaying waitUntilDone:YES];
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}
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- (void)seekToTime:(double)time
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{
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//Need to reset everything's buffers, and then seek?
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/*HACK TO TEST HOW WELL THIS WOULD WORK*/
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[output seek:time];
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[bufferChain seek:time];
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/*END HACK*/
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}
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- (void)setVolume:(double)v
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{
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volume = v;
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[output setVolume:v];
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}
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- (double)volume
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{
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return volume;
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}
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//This is called by the delegate DURING a requestNextStream request.
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- (void)setNextStream:(NSURL *)url
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{
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[self setNextStream:url withUserInfo:nil withRGInfo:nil];
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}
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- (void)setNextStream:(NSURL *)url withUserInfo:(id)userInfo withRGInfo:(NSDictionary *)rgi
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{
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[url retain];
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[nextStream release];
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nextStream = url;
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[userInfo retain];
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[nextStreamUserInfo release];
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nextStreamUserInfo = userInfo;
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[rgi retain];
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[nextStreamRGInfo release];
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nextStreamRGInfo = rgi;
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}
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// Called when the playlist changed before we actually started playing a requested stream. We will re-request.
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- (void)resetNextStreams
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{
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@synchronized (chainQueue) {
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for (id anObject in chainQueue) {
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[anObject setShouldContinue:NO];
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}
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[chainQueue removeAllObjects];
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if (endOfInputReached) {
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[self endOfInputReached:bufferChain];
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}
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}
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}
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- (void)setShouldContinue:(BOOL)s
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{
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if (bufferChain)
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[bufferChain setShouldContinue:s];
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if (output)
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[output setShouldContinue:s];
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}
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- (double)amountPlayed
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{
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return [output amountPlayed];
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}
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- (void)launchOutputThread
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{
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initialBufferFilled = YES;
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if (outputLaunched == NO && startedPaused == NO) {
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[self setPlaybackStatus:kCogStatusPlaying];
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[output launchThread];
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outputLaunched = YES;
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}
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}
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- (void)requestNextStream:(id)userInfo
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{
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[self sendDelegateMethod:@selector(audioPlayer:willEndStream:) withObject:userInfo waitUntilDone:YES];
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}
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- (void)notifyStreamChanged:(id)userInfo
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{
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[self sendDelegateMethod:@selector(audioPlayer:didBeginStream:) withObject:userInfo waitUntilDone:YES];
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}
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- (void)addChainToQueue:(BufferChain *)newChain
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{
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[newChain setUserInfo: nextStreamUserInfo];
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[newChain setShouldContinue:YES];
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[newChain launchThreads];
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[chainQueue insertObject:newChain atIndex:[chainQueue count]];
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}
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- (BOOL)endOfInputReached:(BufferChain *)sender //Sender is a BufferChain
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{
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@synchronized (chainQueue) {
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// No point in constructing new chain for the next playlist entry
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// if there's already one at the head of chainQueue... r-r-right?
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for (BufferChain *chain in chainQueue)
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{
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if ([chain isRunning])
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{
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return YES;
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}
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}
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BufferChain *newChain = nil;
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nextStreamUserInfo = [sender userInfo];
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[nextStreamUserInfo retain]; //Retained because when setNextStream is called, it will be released!!!
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nextStreamRGInfo = [sender rgInfo];
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[nextStreamRGInfo retain];
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[self requestNextStream: nextStreamUserInfo];
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if (!nextStream)
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return YES;
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newChain = [[BufferChain alloc] initWithController:self];
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endOfInputReached = YES;
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BufferChain *lastChain = [chainQueue lastObject];
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if (lastChain == nil) {
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lastChain = bufferChain;
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}
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if ([[nextStream scheme] isEqualToString:[[lastChain streamURL] scheme]]
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&& [[nextStream host] isEqualToString:[[lastChain streamURL] host]]
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&& [[nextStream path] isEqualToString:[[lastChain streamURL] path]])
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{
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if ([lastChain setTrack:nextStream]
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&& [newChain openWithInput:[lastChain inputNode] withOutputFormat:[output format] withRGInfo:nextStreamRGInfo])
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{
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[newChain setStreamURL:nextStream];
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[newChain setUserInfo:nextStreamUserInfo];
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[self addChainToQueue:newChain];
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DLog(@"TRACK SET!!! %@", newChain);
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//Keep on-playin
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[newChain release];
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return NO;
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}
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}
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while (![newChain open:nextStream withOutputFormat:[output format] withRGInfo:nextStreamRGInfo])
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{
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if (nextStream == nil)
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{
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[newChain release];
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return YES;
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}
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[newChain release];
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[self requestNextStream: nextStreamUserInfo];
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newChain = [[BufferChain alloc] initWithController:self];
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}
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[self addChainToQueue:newChain];
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[newChain release];
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// I'm stupid and can't hold too much stuff in my head all at once, so writing it here.
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//
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// Once we get here:
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// - buffer chain for previous stream finished reading
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// - there are (probably) some bytes of the previous stream in the output buffer which haven't been played
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// (by output node) yet
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// - self.bufferChain == previous playlist entry's buffer chain
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// - self.nextStream == next playlist entry's URL
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// - self.nextStreamUserInfo == next playlist entry
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// - head of chainQueue is the buffer chain for the next entry (which has launched its threads already)
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}
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return YES;
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}
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- (void)endOfInputPlayed
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{
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// Once we get here:
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// - the buffer chain for the next playlist entry (started in endOfInputReached) have been working for some time
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// already, so that there is some decoded and converted data to play
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// - the buffer chain for the next entry is the first item in chainQueue
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@synchronized(chainQueue) {
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endOfInputReached = NO;
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if ([chainQueue count] <= 0)
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{
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//End of playlist
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[self stop];
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[bufferChain release];
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bufferChain = nil;
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return;
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}
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BufferChain *oldChain = bufferChain;
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bufferChain = [chainQueue objectAtIndex:0];
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[oldChain release];
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[bufferChain retain];
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[chainQueue removeObjectAtIndex:0];
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DLog(@"New!!! %@ %@", bufferChain, [[bufferChain inputNode] decoder]);
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}
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[self notifyStreamChanged:[bufferChain userInfo]];
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[output setEndOfStream:NO];
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}
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- (void)sendDelegateMethod:(SEL)selector withObject:(id)obj waitUntilDone:(BOOL)wait
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{
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NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[delegate methodSignatureForSelector:selector]];
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[invocation setSelector:selector];
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[invocation setArgument:&self atIndex:2]; //Indexes start at 2, the first being self, the second being command.
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[invocation setArgument:&obj atIndex:3];
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[self performSelectorOnMainThread:@selector(sendDelegateMethodMainThread:) withObject:invocation waitUntilDone:wait];
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}
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- (void)sendDelegateMethod:(SEL)selector withObject:(id)obj withObject:(id)obj2 waitUntilDone:(BOOL)wait
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{
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NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[delegate methodSignatureForSelector:selector]];
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[invocation setSelector:selector];
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[invocation setArgument:&self atIndex:2]; //Indexes start at 2, the first being self, the second being command.
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[invocation setArgument:&obj atIndex:3];
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[invocation setArgument:&obj2 atIndex:4];
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[self performSelectorOnMainThread:@selector(sendDelegateMethodMainThread:) withObject:invocation waitUntilDone:wait];
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}
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- (void)sendDelegateMethodMainThread:(id)invocation
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{
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[invocation invokeWithTarget:delegate];
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}
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- (void)setPlaybackStatus:(int)status waitUntilDone:(BOOL)wait
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{
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[self sendDelegateMethod:@selector(audioPlayer:didChangeStatus:userInfo:) withObject:[NSNumber numberWithInt:status] withObject:[bufferChain userInfo] waitUntilDone:wait];
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}
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- (void)setPlaybackStatus:(int)status
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{
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[self setPlaybackStatus:status waitUntilDone:NO];
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}
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- (BufferChain *)bufferChain
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{
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return bufferChain;
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}
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- (OutputNode *) output
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{
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return output;
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}
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+ (NSArray *)containerTypes
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{
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return [[[PluginController sharedPluginController] containers] allKeys];
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}
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+ (NSArray *)fileTypes
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{
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PluginController *pluginController = [PluginController sharedPluginController];
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NSArray *containerTypes = [[pluginController containers] allKeys];
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NSArray *decoderTypes = [[pluginController decodersByExtension] allKeys];
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NSArray *metdataReaderTypes = [[pluginController metadataReaders] allKeys];
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NSArray *propertiesReaderTypes = [[pluginController propertiesReadersByExtension] allKeys];
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NSMutableSet *types = [NSMutableSet set];
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[types addObjectsFromArray:containerTypes];
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[types addObjectsFromArray:decoderTypes];
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[types addObjectsFromArray:metdataReaderTypes];
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[types addObjectsFromArray:propertiesReaderTypes];
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return [types allObjects];
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}
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+ (NSArray *)schemes
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{
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PluginController *pluginController = [PluginController sharedPluginController];
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return [[pluginController sources] allKeys];
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}
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- (double)volumeUp:(double)amount
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{
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double newVolume = linearToLogarithmic(logarithmicToLinear(volume + amount));
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if (newVolume > MAX_VOLUME)
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newVolume = MAX_VOLUME;
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[self setVolume:newVolume];
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// the playbackController needs to know the new volume, so it can update the
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// volumeSlider accordingly.
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return newVolume;
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}
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- (double)volumeDown:(double)amount
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{
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double newVolume;
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if (amount > volume)
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newVolume = 0.0;
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else
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newVolume = linearToLogarithmic(logarithmicToLinear(volume - amount));
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[self setVolume:newVolume];
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return newVolume;
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}
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@end
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