116 lines
2.1 KiB
Plaintext
116 lines
2.1 KiB
Plaintext
//
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// MonkeysFile.m
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// zyVorbis
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//
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// Created by Vincent Spader on 1/30/05.
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// Copyright 2005 Vincent Spader All rights reserved.
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//
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#import "MonkeysAudioDecoder.h"
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#import "MAC/ApeInfo.h"
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#import "MAC/CharacterHelper.h"
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@implementation MonkeysAudioDecoder
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- (BOOL)open:(id<CogSource>)s
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{
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int n;
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sourceIO = new SourceIO(s);
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[self setSource:s];
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decompress = CreateIAPEDecompressEx(sourceIO, &n);
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if (decompress == NULL)
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{
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NSLog(@"ERROR OPENING FILE");
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return NO;
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}
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frequency = decompress->GetInfo(APE_INFO_SAMPLE_RATE);
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bitsPerSample = decompress->GetInfo(APE_INFO_BITS_PER_SAMPLE);
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channels = decompress->GetInfo(APE_INFO_CHANNELS);
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length = ((double)decompress->GetInfo(APE_INFO_TOTAL_BLOCKS)*1000.0)/frequency;
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[self willChangeValueForKey:@"properties"];
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[self didChangeValueForKey:@"properties"];
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return YES;
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}
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- (int)fillBuffer:(void *)buf ofSize:(UInt32)size
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{
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int n;
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int numread;
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int blockAlign = decompress->GetInfo(APE_INFO_BLOCK_ALIGN);
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n = decompress->GetData((char *)buf, size/blockAlign, &numread);
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if (n != ERROR_SUCCESS)
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{
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NSLog(@"ERROR: %i", n);
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return 0;
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}
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numread *= blockAlign;
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return numread;
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}
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- (void)close
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{
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// DBLog(@"CLOSE");
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if (decompress)
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delete decompress;
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if (sourceIO)
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delete sourceIO;
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[source release];
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decompress = NULL;
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sourceIO = NULL;
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}
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- (double)seekToTime:(double)milliseconds
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{
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int r;
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// DBLog(@"HELLO: %i", int(frequency*((double)milliseconds/1000.0)));
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r = decompress->Seek(int(frequency*((double)milliseconds/1000.0)));
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return milliseconds;
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}
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- (void)setSource:(id<CogSource>)s
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{
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[s retain];
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[source release];
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source = s;
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}
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- (id<CogSource>)source
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{
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return source;
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}
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- (BOOL)seekable
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{
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return [source seekable];
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}
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- (NSDictionary *)properties
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{
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return [NSDictionary dictionaryWithObjectsAndKeys:
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[NSNumber numberWithInt:channels],@"channels",
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[NSNumber numberWithInt:bitsPerSample],@"bitsPerSample",
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[NSNumber numberWithFloat:frequency],@"sampleRate",
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[NSNumber numberWithDouble:length],@"length",
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@"host",@"endian",
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nil];
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}
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+ (NSArray *)fileTypes
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{
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return [NSArray arrayWithObject:@"ape"];
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}
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@end
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