126 lines
2.1 KiB
Objective-C
126 lines
2.1 KiB
Objective-C
//
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// WaveFile.m
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// zyVorbis
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//
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// Created by Vincent Spader on 1/31/05.
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// Copyright 2005 __MyCompanyName__. All rights reserved.
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//
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#import "WaveFile.h"
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@implementation WaveFile
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- (BOOL)open:(const char *)filename
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{
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sndFile = sf_open(filename, SFM_READ, &info);
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if (sndFile == NULL)
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return NO;
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return [self readInfo];
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}
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- (BOOL)readInfo
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{
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bitRate = 0;
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frequency = info.samplerate;
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channels = info.channels;
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isUnsigned = NO;
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switch (info.format & SF_FORMAT_ENDMASK)
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{
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case SF_ENDIAN_FILE:
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if (((info.format & SF_FORMAT_TYPEMASK) == SF_FORMAT_AIFF) || ((info.format & SF_FORMAT_TYPEMASK) == SF_FORMAT_AU))
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isBigEndian = YES;
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else
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isBigEndian = NO;
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break;
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case SF_ENDIAN_CPU:
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isBigEndian = YES;
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// DBLog(@"&CPU ENDIAN");
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break;
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case SF_ENDIAN_LITTLE:
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isBigEndian = NO;
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// DBLog(@"&LITTLE INDIAN");
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break;
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case SF_ENDIAN_BIG:
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isBigEndian = YES;
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// DBLog(@"&BIG ENDIAN");
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break;
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default:
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isBigEndian = NO;
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// DBLog(@"&WHAT THE FUCK IS GOING ON?!!!!");
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}
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switch (info.format & SF_FORMAT_SUBMASK)
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{
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case SF_FORMAT_PCM_S8:
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bitsPerSample = 8;
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break;
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case SF_FORMAT_PCM_16:
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bitsPerSample = 16;
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break;
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case SF_FORMAT_PCM_24:
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bitsPerSample = 24;
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break;
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case SF_FORMAT_PCM_32:
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bitsPerSample = 32;
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break;
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case SF_FORMAT_PCM_U8:
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isUnsigned = YES;
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bitsPerSample = 8;
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break;
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default:
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DBLog(@"BITS PER SAMPLE NOT DEFINED");
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return NO;
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}
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totalSize = info.frames*channels*bitsPerSample/8;
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return YES;
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}
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- (BOOL)readInfo:(const char *)filename
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{
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[self open:filename];
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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 numread;
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numread = sf_read_raw(sndFile, buf, size);
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/*
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if (isBigEndian == YES)
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{
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int n;
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for (n = 0; n < numread/2; n++)
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{
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((UInt16 *)buf)[n] = CFSwapInt16LittleToHost(((UInt16 *)buf)[n]);
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}
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}
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*/
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currentPosition += numread;
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return numread;
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}
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- (void)close
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{
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if (sndFile)
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sf_close(sndFile);
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sndFile = NULL;
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}
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- (double)seekToTime:(double)milliseconds
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{
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sf_seek(sndFile, frequency*((double)milliseconds/1000.0), SEEK_SET);
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return milliseconds;
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}
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@end
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