134 lines
3.0 KiB
Objective-C
134 lines
3.0 KiB
Objective-C
//
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// Sound.h
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// Cog
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//
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// Created by Vincent Spader on 5/11/05.
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// Copyright 2005 Vincent Spader All rights reserved.
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//
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#import <Cocoa/Cocoa.h>
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#import <CoreAudio/AudioHardware.h>
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#import <AudioToolbox/AudioToolbox.h>
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#import <AudioUnit/AudioUnit.h>
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#import "SoundFile/SoundFile.h"
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#import "VirtualRingBuffer.h"
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//Inter thread messages
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//Controller to sound messages
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enum
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{
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kCogPauseResumeMessage = 100,
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kCogPauseMessage,
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kCogResumeMessage,
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kCogPlayFileMessage,
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kCogChangeFileMessage,
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kCogStopMessage,
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kCogSeekMessage,
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kCogEndOfPlaylistMessage,
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kCogSetVolumeMessage,
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//sound to controller
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kCogCheckinMessage,
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kCogRequestNextFileMessage,
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kCogBitrateUpdateMessage,
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kCogLengthUpdateMessage,
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kCogPositionUpdateMessage,
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kCogFileChangedMessage,
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kCogStatusUpdateMessage
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};
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enum
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{
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kCogStatusPaused = 0,
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kCogStatusStopped,
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kCogStatusPlaying,
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kCogStatusEndOfFile,
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kCogStatusEndOfPlaylist,
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kCogStatusPlaybackEnded
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};
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@interface Sound : NSObject {
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//For communication with the soundcontroller
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NSPort *sendPort;
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NSPort *distantPort;
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SoundFile *soundFile;
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unsigned long currentPosition;
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unsigned long totalLength;
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//Whole lotta core audio fun
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AudioUnit outputUnit;
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AudioStreamBasicDescription deviceFormat; // info about the default device
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AudioStreamBasicDescription sourceStreamFormat;
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AURenderCallbackStruct renderCallback;
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AudioConverterRef converter;
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void *conversionBuffer;
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int playbackStatus;
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int oldPlaybackStatus; //For resuming
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NSTimer *fillTimer; //used to wake up the filler thread
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//semaphore_t semaphore; //used to wake up the filler thread
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NSTimer *positionTimer;
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VirtualRingBuffer *ringBuffer;
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VirtualRingBuffer *auxRingBuffer; //For changing tracks
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VirtualRingBuffer *readRingBuffer;
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VirtualRingBuffer *writeRingBuffer;
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//Track changing procedure...sound send changerequest to controller when it hits EOF, and sets writeringbuffer to the opposite buffer...
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//when buffer is empty, sound sends changecomplete to controller, and sets readringbuffer to the opposite
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NSLock *readLock;
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NSLock *writeLock;
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}
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- (void)launchThreadWithPort:(id)inData;
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- (void)sendPortMessage:(int)msgid;
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- (void)sendPortMessage:(int)msgid withData:(void *)data ofSize:(int)size;
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- (void)handlePortMessage:(NSPortMessage *)portMessage;
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- (void)scheduleFillTimer;
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- (void)fireFillTimer;
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- (void)sendPositionUpdate:(id)sender;
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- (void)fillBuffer:(id)sender;
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- (int)convert:(void *)destBuf packets:(int)numPackets;
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- (void)resetBuffer;
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- (VirtualRingBuffer *)oppositeBuffer:(VirtualRingBuffer *)buf;
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//private methods
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- (BOOL)setupAudioOutput;
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- (BOOL)startAudioOutput;
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- (void)stopAudioOutput;
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- (void)cleanUpAudioOutput;
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- (BOOL)prepareSoundFile;
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- (void)cleanUpSoundFile;
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- (void)setThreadPolicy;
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- (void)setPlaybackStatus:(int)s;
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- (void)pause;
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- (void)resume;
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- (void)stop;
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- (void)playFile:(NSString *)filename;
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- (void)changeFile:(NSString *)filename;
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- (BOOL)setSoundFile:(NSString *)filename;
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//helper function
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- (double)calculateTime:(unsigned long) pos;
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- (unsigned long)calculatePos:(double) time;
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- (void)setVolume:(float)v;
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@end
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