cog/SoundFile/SoundFile.m

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//
// SoundFile.m
// Cog
//
// Created by Vincent Spader on 1/15/05.
// Copyright 2005 __MyCompanyName__. All rights reserved.
//
#import "SoundFile.h"
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#import "FlacFile.h"
#import "AACFile.h"
#import "MonkeysFile.h"
#import "MPEGFile.h"
#import "MusepackFile.h"
#import "VorbisFile.h"
#import "WaveFile.h"
#import "WavPackFile.h"
#import "ShnFile.h"
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@implementation SoundFile
/*- (void)seek:(unsigned long)position
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{
unsigned long time;
unsigned long frame;
frame = position/channels/(bitsPerSample/8);
time = (unsigned long)(((double)frame/(frequency/1000.0)));
currentPosition = position;
time = [self seekToTime:time];
position = time * (frequency/1000.0)*chanels*(bitsPerSample/8)
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}
*/
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- (double)length
{
return (totalSize/channels/(bitsPerSample/8)/(frequency/1000.0));
}
- (int)bitRate
{
return bitRate;
}
//this should be done by the soundfile....not seek...
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- (double)seekToTime:(double)milliseconds
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{
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return -1.0;
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}
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/*
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@class FlacFile;
@class MonkeysFile;
@class MPEGFile;
@class MusepackFile;
@class VorbisFile;
@class WaveFile;
@class AACFile;
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@class WavPackFile;
@class ShnFile;
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*/
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+ (SoundFile *)soundFileFromFilename:(NSString *)filename
{
SoundFile *soundFile;
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DBLog(@"FILENAME: %@", [filename pathExtension]);
if (([[filename pathExtension] caseInsensitiveCompare:@"wav"] == NSOrderedSame) || ([[filename pathExtension] caseInsensitiveCompare:@"aiff"] == NSOrderedSame) || ([[filename pathExtension] caseInsensitiveCompare:@"aif"] == NSOrderedSame))
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{
soundFile = [[WaveFile alloc] init];
}
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else if ([[filename pathExtension] caseInsensitiveCompare:@"ogg"] == NSOrderedSame)
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{
soundFile = [[VorbisFile alloc] init];
}
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else if ([[filename pathExtension] caseInsensitiveCompare:@"mpc"] == NSOrderedSame)
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{
soundFile = [[MusepackFile alloc] init];
}
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else if ([[filename pathExtension] caseInsensitiveCompare:@"flac"] == NSOrderedSame)
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{
soundFile = [[FlacFile alloc] init];
}
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else if ([[filename pathExtension] caseInsensitiveCompare:@"ape"] == NSOrderedSame)
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{
soundFile = [[MonkeysFile alloc] init];
}
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else if ([[filename pathExtension] caseInsensitiveCompare:@"mp3"] == NSOrderedSame)
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{
soundFile = [[MPEGFile alloc] init];
}
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else if ([[filename pathExtension] caseInsensitiveCompare:@"aac"] == NSOrderedSame)
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{
soundFile = [[AACFile alloc] init];
}
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else if ([[filename pathExtension] caseInsensitiveCompare:@"wv"] == NSOrderedSame)
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{
soundFile = [[WavPackFile alloc] init];
}
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else if ([[filename pathExtension] caseInsensitiveCompare:@"shn"] == NSOrderedSame)
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{
soundFile = [[ShnFile alloc] init];
}
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else
{
soundFile = nil;
}
return soundFile;
}
+ (SoundFile *)open:(NSString *)filename
{
SoundFile *soundFile;
BOOL b;
soundFile = [SoundFile soundFileFromFilename:filename];
b = [soundFile open:[filename UTF8String]];
if (b == YES)
return soundFile;
return nil;
}
+ (SoundFile *)readInfo:(NSString *)filename
{
BOOL b;
SoundFile *soundFile;
soundFile = [SoundFile soundFileFromFilename:filename];
b = [soundFile readInfo:[filename UTF8String]];
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[soundFile close];
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if (b == YES)
return soundFile;
return nil;
}
- (void)reset
{
[self seekToTime:0.0];
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}
- (void)getFormat:(AudioStreamBasicDescription *)sourceStreamFormat
{
// NSLog(@"Getting format!");
sourceStreamFormat->mFormatID = kAudioFormatLinearPCM;
sourceStreamFormat->mFormatFlags = 0;
sourceStreamFormat->mSampleRate = frequency;
sourceStreamFormat->mBitsPerChannel = bitsPerSample;
sourceStreamFormat->mBytesPerFrame = (bitsPerSample/8)*channels;
sourceStreamFormat->mChannelsPerFrame = channels;
sourceStreamFormat->mFramesPerPacket = 1;
sourceStreamFormat->mBytesPerPacket = (bitsPerSample/8)*channels;
sourceStreamFormat->mReserved = 0;
if (isBigEndian == YES)
{
sourceStreamFormat->mFormatFlags |= kLinearPCMFormatFlagIsBigEndian;
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sourceStreamFormat->mFormatFlags |= kLinearPCMFormatFlagIsAlignedHigh;
// sourceStreamFormat->mFormatFlags |= kLinearPCMFormatFlagIsNonMixable;
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// NSLog(@"FUCKER IS BIG ENDIAN");
}
if (isUnsigned == NO)
sourceStreamFormat->mFormatFlags |= kLinearPCMFormatFlagIsSignedInteger;
}
- (void)close
{
}
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- (int)fillBuffer:(void *)buf ofSize:(UInt32)size
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{
return 0;
}
- (BOOL)open:(const char *)filename
{
// NSLog(@"WRONG OPEN!!!");
return NO;
}
- (BOOL)readInfo:(const char *)filename
{
return NO;
}
- (unsigned long)currentPosition
{
return currentPosition;
}
- (unsigned long)totalSize
{
return totalSize;
}
- (UInt16)channels
{
return channels;
}
- (UInt16)bitsPerSample
{
return bitsPerSample;
}
- (UInt32)frequency
{
return frequency;
}
-(BOOL)isBigEndian
{
return isBigEndian;
}
-(BOOL)isUnsigned
{
return isUnsigned;
}
@end