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/*
*
* $Id: k3bffmpegdecoder.cpp 641798 2007-03-12 16:07:10Z trueg $
* Copyright (C) 2003 Sebastian Trueg <trueg@k3b.org>
*
* This file is part of the K3b project.
* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
*
* This program 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.
* See the file "COPYING" for the exact licensing terms.
*/
#include <config.h>
#include "k3bffmpegdecoder.h"
#include "k3bffmpegwrapper.h"
#include <kdebug.h>
#include <k3bpluginfactory.h>
extern "C" {
#include <libavcodec/avcodec.h>
}
#include <math.h>
K_EXPORT_COMPONENT_FACTORY( libk3bffmpegdecoder, K3bPluginFactory<K3bFFMpegDecoderFactory>( "k3bffmpegdecoder" ) )
K3bFFMpegDecoderFactory::K3bFFMpegDecoderFactory( TQObject* tqparent, const char* name )
: K3bAudioDecoderFactory( tqparent, name )
{
}
K3bFFMpegDecoderFactory::~K3bFFMpegDecoderFactory()
{
}
K3bAudioDecoder* K3bFFMpegDecoderFactory::createDecoder( TQObject* tqparent,
const char* name ) const
{
return new K3bFFMpegDecoder( tqparent, name );
}
bool K3bFFMpegDecoderFactory::canDecode( const KURL& url )
{
K3bFFMpegFile* file = K3bFFMpegWrapper::instance()->open( url.path() );
if( file ) {
delete file;
return true;
}
else {
return false;
}
}
K3bFFMpegDecoder::K3bFFMpegDecoder( TQObject* tqparent, const char* name )
: K3bAudioDecoder( tqparent, name ),
m_file(0)
{
}
K3bFFMpegDecoder::~K3bFFMpegDecoder()
{
}
TQString K3bFFMpegDecoder::fileType() const
{
return m_type;
}
bool K3bFFMpegDecoder::analyseFileInternal( K3b::Msf& frames, int& samplerate, int& ch )
{
m_file = K3bFFMpegWrapper::instance()->open( filename() );
if( m_file ) {
// TODO: call addTechnicalInfo
addMetaInfo( META_TITLE, m_file->title() );
addMetaInfo( META_ARTIST, m_file->author() );
addMetaInfo( META_COMMENT, m_file->comment() );
samplerate = m_file->sampleRate();
ch = m_file->channels();
m_type = m_file->typeComment();
frames = m_file->length();
// ffmpeg's length information is not reliable at all
// so we have to decode the whole file in order to get the correct length
// char buffer[10*2048];
// int len = 0;
// unsigned long long bytes = 0;
// while( ( len = m_file->read( buffer, 10*2048 ) ) > 0 )
// bytes += len;
// frames = (unsigned long)ceil((double)bytes/2048.0);
// cleanup;
delete m_file;
m_file = 0;
return true;
}
else
return false;
}
bool K3bFFMpegDecoder::initDecoderInternal()
{
if( !m_file )
m_file = K3bFFMpegWrapper::instance()->open( filename() );
return (m_file != 0);
}
void K3bFFMpegDecoder::cleanup()
{
delete m_file;
m_file = 0;
}
bool K3bFFMpegDecoder::seekInternal( const K3b::Msf& msf )
{
if( msf == 0 )
return initDecoderInternal();
else
return m_file->seek( msf );
}
int K3bFFMpegDecoder::decodeInternal( char* _data, int maxLen )
{
return m_file->read( _data, maxLen );
}
#include "k3bffmpegdecoder.moc"
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