80 lines
1.4 KiB
Objective-C
80 lines
1.4 KiB
Objective-C
//
|
|
// VorbisFile.m
|
|
// zyVorbis
|
|
//
|
|
// Created by Vincent Spader on 1/22/05.
|
|
// Copyright 2005 Vincent Spader All rights reserved.
|
|
//
|
|
|
|
#import "VorbisFile.h"
|
|
|
|
|
|
@implementation VorbisFile
|
|
|
|
- (BOOL)open:(const char *)filename
|
|
{
|
|
inFd = fopen(filename, "rb");
|
|
if (inFd == 0)
|
|
return NO;
|
|
|
|
if (ov_open(inFd, &vorbisRef, NULL, 0) != 0)
|
|
return NO;
|
|
|
|
return [self readInfo];
|
|
}
|
|
|
|
- (BOOL)readInfo
|
|
{
|
|
vorbis_info *vi;
|
|
|
|
vi = ov_info(&vorbisRef, -1);
|
|
bitrate = (int)(vi->bitrate_nominal/1000.0);
|
|
channels = vi->channels;
|
|
bitsPerSample = vi->channels * 8;
|
|
frequency = vi->rate;
|
|
|
|
totalSize = ov_pcm_total(&vorbisRef, -1) * channels * bitsPerSample/8;
|
|
|
|
// DBLog(@"Ok to go WITH OGG.");
|
|
|
|
return YES;
|
|
}
|
|
|
|
- (BOOL)readInfo:(const char *)filename
|
|
{
|
|
[self open:filename]; //automatically invokes readInfo
|
|
|
|
return YES;
|
|
}
|
|
|
|
- (int)fillBuffer:(void *)buf ofSize:(UInt32)size
|
|
{
|
|
int numread;
|
|
int total = 0;
|
|
|
|
numread = ov_read(&vorbisRef, &((char *)buf)[total], size - total, 0, bitsPerSample/8, 1, ¤tSection);
|
|
while (total != size && numread > 0)
|
|
{
|
|
total += numread;
|
|
|
|
numread = ov_read(&vorbisRef, &((char *)buf)[total], size - total, 0, bitsPerSample/8, 1, ¤tSection);
|
|
}
|
|
|
|
return total;
|
|
}
|
|
|
|
- (void)close
|
|
{
|
|
ov_clear(&vorbisRef);
|
|
}
|
|
|
|
- (double)seekToTime:(double)milliseconds
|
|
{
|
|
ov_time_seek(&vorbisRef, (double)milliseconds/1000.0);
|
|
|
|
return milliseconds;
|
|
}
|
|
|
|
|
|
@end
|