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/*
SPDX-FileCopyrightText: 1998-2008 Sebastian Trueg <trueg@k3b.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "k3bffmpegdecoder.h"
#include "k3bffmpegwrapper.h"
#include <config-k3b.h>
#include <QDebug>
extern "C" {
/*
Recent versions of FFmpeg uses C99 constant macros which are not present in C++ standard.
The macro __STDC_CONSTANT_MACROS allow C++ to use these macros. Although it's not defined by C++ standard
it's supported by many implementations.
See bug 236036 and discussion: https://lists.ffmpeg.org/pipermail/ffmpeg-devel/2010-May/095488.html
*/
#define __STDC_CONSTANT_MACROS
#ifdef NEWFFMPEGAVCODECPATH
#include <libavcodec/avcodec.h>
#else
#include <ffmpeg/avcodec.h>
#endif
}
#include <math.h>
K_PLUGIN_CLASS_WITH_JSON(K3bFFMpegDecoderFactory, "k3bffmpegdecoder.json")
K3bFFMpegDecoderFactory::K3bFFMpegDecoderFactory( QObject* parent, const QVariantList& )
: K3b::AudioDecoderFactory( parent )
{
}
K3bFFMpegDecoderFactory::~K3bFFMpegDecoderFactory()
{
}
K3b::AudioDecoder* K3bFFMpegDecoderFactory::createDecoder( QObject* parent ) const
{
return new K3bFFMpegDecoder( parent);
}
bool K3bFFMpegDecoderFactory::canDecode( const QUrl& url )
{
K3bFFMpegFile* file = K3bFFMpegWrapper::instance()->open( url.toLocalFile() );
if( file ) {
delete file;
return true;
}
else {
return false;
}
}
K3bFFMpegDecoder::K3bFFMpegDecoder( QObject* parent )
: K3b::AudioDecoder( parent ),
m_file(0)
{
}
K3bFFMpegDecoder::~K3bFFMpegDecoder()
{
}
QString 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"
#include "moc_k3bffmpegdecoder.cpp"
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