cog/Old/Sound.h

134 lines
3.0 KiB
Objective-C

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