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/*
* MP3/MPlayer plugin to VDR (C++)
*
* (C) 2001-2009 Stefan Huelswitt <s.huelswitt@gmx.de>
*
* OGG stream support initialy developed by Manuel Reimer <manuel.reimer@gmx.de>
*
* This code is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
*/
#include <stdlib.h>
#include <stdio.h>
#include "common.h"
#include "decoder-ogg-stream.h"
#include "stream.h"
// --- Ogg callbacks -----------------------------------------------------------
static size_t callback_read(void *ptr, size_t size, size_t nmemb, void *datasource)
{
cNetStream *nstr=(cNetStream*)datasource;
unsigned char *sdata;
unsigned long slen=0;
// Read in loop until we either get data or function "Stream" fails
do {
if(!nstr->Stream(sdata,slen)) {
d(printf("oggstream-callback-read: EOF?\n"))
return 0;
}
} while(slen==0);
size_t read_size=size*nmemb;
if(slen>read_size) {
// If someone ever gets this message, buffer handling has to be improved...
d(printf("oggstream-callback-read: buffer size too small...\n"))
slen=read_size;
}
memcpy(ptr,sdata,slen);
return slen/size;
}
static int callback_close(void *datasource)
{
cNetStream *nstr=(cNetStream*)datasource;
nstr->Close();
return 0;
}
static const ov_callbacks callbacks = {
callback_read,
NULL,
callback_close,
NULL
};
// --- cNetOggFile -------------------------------------------------------------
cNetOggFile::cNetOggFile(const char *Filename)
:cOggFile(Filename)
{
nstr=new cNetStream(Filename);
}
bool cNetOggFile::Open(bool log)
{
if(opened) return true;
if(!nstr->Open(log)) return false;
int r=ov_open_callbacks(nstr,&vf,NULL,0,callbacks);
if(!r) opened=true;
else {
nstr->Close();
if(log) Error("open",r);
}
return opened;
}
// --- cNetOggInfo -------------------------------------------------------------
cNetOggInfo::cNetOggInfo(cNetOggFile *File)
:cOggInfo(File)
{
nfile=File;
nstr=nfile->nstr;
}
bool cNetOggInfo::DoScan(bool KeepOpen)
{
Clear();
IcyInfo();
if(!Title) FakeTitle(nstr->Filename);
Total=0;
ChMode=3;
DecoderID=DEC_OGGS;
InfoDone();
return true;
}
void cNetOggInfo::InfoHook()
{
if(nstr->IcyChanged()) IcyInfo();
vorbis_info *vi=ov_info(&nfile->vf,-1);
if(!vi) return;
Channels=vi->channels;
ChMode=Channels>1 ? 3:0;
SampleFreq=vi->rate;
if(vi->bitrate_upper>0 && vi->bitrate_lower>0) {
Bitrate=vi->bitrate_lower;
MaxBitrate=vi->bitrate_upper;
}
else
Bitrate=vi->bitrate_nominal;
Total=(int)ov_time_total(&nfile->vf,-1);
Frames=-1;
}
void cNetOggInfo::IcyInfo(void)
{
const char *t=nstr->IcyTitle();
const char *a;
if(t) {
a=nstr->IcyName();
if(!a) a=nstr->IcyUrl();
}
else {
t=nstr->IcyName();
a=nstr->IcyUrl();
}
if(t && (!Title || strcmp(t,Title))) {
free(Title);
Title=strdup(t);
}
if(a && (!Album || strcmp(a,Album))) {
free(Album);
Album=strdup(a);
}
}
// --- cOggStreamDecoder -------------------------------------------------------
cOggStreamDecoder::cOggStreamDecoder(const char *Filename)
:cOggDecoder(Filename,false)
{
nfile=new cNetOggFile(Filename);
file=nfile;
info=new cNetOggInfo(nfile);
}
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