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