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/*
info about vorbis files.
Copyright (C) 2001 Martin Vogt
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published by
the Free Software Foundation.
For more information look at the file COPYRIGHT in this package
*/
#include "vorbisInfo.h"
#include <iostream>
using namespace std;
#ifdef OGG_VORBIS
#define CHUNKSIZE 4096
#define GETINPUT(stream,input) \
VorbisInfo* info=(VorbisInfo*) stream; \
FileAccess* input=info->getInput();
size_t fread_func2(void *ptr, size_t size, size_t nmemb, void *stream) {
GETINPUT(stream,input);
size_t want=size*nmemb;
size_t back=input->read((char*)ptr,want);
return back;
}
int fseek_func2(void *stream, ogg_int64_t offset, int whence) {
int ret;
GETINPUT(stream,input);
if (whence==SEEK_SET) {
ret=input->seek(offset);
info->setSeekPos(offset);
return ret;
}
if (whence==SEEK_CUR) {
ret=input->seek(input->getBytePosition()+offset);
return ret;
}
if (whence==SEEK_END) {
ret=input->seek(input->getByteLength());
return ret;
}
cout << "hm, strange call"<<endl;
return -1;
}
int fclose_func2 (void * stream) {
cout << "fclose_func"<<endl;
GETINPUT(stream,input);
// its handled different in kmpg
// we close the stream if the decoder signals eof.
return true;
}
long ftell_func2 (void *stream) {
GETINPUT(stream,input);
return input->getBytePosition();
}
VorbisInfo::VorbisInfo(FileAccess* input) {
this->input=input;
vf=new OggVorbis_File();
ov_callbacks callbacks;
callbacks.read_func = fread_func2;
callbacks.seek_func = fseek_func2;
callbacks.close_func = fclose_func2;
callbacks.tell_func = ftell_func2;
if(ov_open_callbacks(this, vf, NULL, 0, callbacks) < 0) {
cout << "error ov_open_callbacks"<<endl;
}
// now init stream
vi=ov_info(vf,-1);
lastSeekPos=0;
}
VorbisInfo::~VorbisInfo() {
delete vf;
if (vi != NULL) {
//?
}
}
long VorbisInfo::getSeekPosition(int seconds) {
int back=0;
if (vi != NULL) {
lastSeekPos=0;
ov_time_seek(vf,seconds);
back=lastSeekPos;
}
return back;
}
long VorbisInfo::getLength() {
int back=0;
if (vi != NULL) {
back = (int) ov_time_total(vf, -1);
}
return back;
}
void VorbisInfo::print(const char* msg) {
cout << "VorbisInfo:"<<msg<<endl;
cout << "Length (sec):"<<getLength()<<endl;
}
void VorbisInfo::setSeekPos(long pos) {
this->lastSeekPos=pos;
}
long VorbisInfo::getSeekPos() {
return lastSeekPos;
}
FileAccess* VorbisInfo::getInput() {
return input;
}
#endif
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