Added abandoned KDE3 version of K3B

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/k3b@1084400 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

4 files changed, 488 insertions, 0 deletions

diff --git a/plugins/decoder/wave/Makefile.am b/plugins/decoder/wave/Makefile.am
new file mode 100644
index 0000000..5debea1
--- /dev/null
+++ b/plugins/decoder/wave/Makefile.am
@@ -0,0 +1,13 @@
+AM_CPPFLAGS = -I$(srcdir)/../../../libk3b/plugin -I$(srcdir)/../../../libk3b/core -I$(srcdir)/../../../libk3bdevice $(all_includes)
+
+kde_module_LTLIBRARIES = libk3bwavedecoder.la
+
+libk3bwavedecoder_la_SOURCES = k3bwavedecoder.cpp
+
+libk3bwavedecoder_la_LIBADD = $(LIB_KDECORE) ../../../libk3b/libk3b.la
+libk3bwavedecoder_la_LDFLAGS = -avoid-version -module -no-undefined $(all_libraries)
+
+pluginsdir = $(kde_datadir)/k3b/plugins
+plugins_DATA = k3bwavedecoder.plugin
+
+METASOURCES = AUTO
diff --git a/plugins/decoder/wave/k3bwavedecoder.cpp b/plugins/decoder/wave/k3bwavedecoder.cpp
new file mode 100644
index 0000000..6494e5c
--- /dev/null
+++ b/plugins/decoder/wave/k3bwavedecoder.cpp
@@ -0,0 +1,392 @@
+/* 
+ *
+ * $Id: k3bwavedecoder.cpp 619556 2007-01-03 17:38:12Z 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 "k3bwavedecoder.h"
+
+#include <k3bpluginfactory.h>
+
+#include <qfile.h>
+#include <qcstring.h>
+
+#include <kdebug.h>
+#include <klocale.h>
+
+
+
+K_EXPORT_COMPONENT_FACTORY( libk3bwavedecoder, K3bPluginFactory<K3bWaveDecoderFactory>( "libk3bwavedecoder" ) )
+
+
+static unsigned short le_a_to_u_short( unsigned char* a ) {
+  return ((unsigned short) 
+	  ((a[0]       & 0xFF) | 
+	   (a[1] << 8  & 0xFF00)) );
+}
+
+static unsigned long le_a_to_u_long( unsigned char* a ) {
+  return ((unsigned long) 
+	  ((a[0]       & 0xFF) | 
+	   (a[1] << 8  & 0xFF00) | 
+	   (a[2] << 16 & 0xFF0000) | 
+	   (a[3] << 24 & 0xFF000000)) );
+}
+
+
+/**
+ * Returns the length of the wave file in bytes
+ * Otherwise 0 is returned.
+ * leave file seek pointer past WAV header.
+ */
+static unsigned long identifyWaveFile( QFile* f, int* samplerate = 0, int* channels = 0, int* samplesize = 0 )
+{
+  typedef struct {
+    unsigned char	ckid[4];
+    unsigned char	cksize[4];
+  } chunk_t;
+
+  typedef struct {
+    unsigned char	wave[4];
+  } riff_chunk;
+
+  typedef struct {
+    unsigned char	fmt_tag[2];
+    unsigned char	channels[2];
+    unsigned char	sample_rate[4];
+    unsigned char	av_byte_rate[4];
+    unsigned char	block_size[2];
+    unsigned char	bits_per_sample[2];
+  } fmt_chunk;
+ 
+  static const char* WAV_RIFF_MAGIC = "RIFF";		// Magic for file format
+  static const char* WAV_WAVE_MAGIC = "WAVE";		// Magic for Waveform Audio
+  static const char* WAV_FMT_MAGIC  = "fmt ";		// Start of Waveform format
+  static const char* WAV_DATA_MAGIC = "data";		// Start of data chunk
+
+  chunk_t chunk;
+  riff_chunk riff;
+  fmt_chunk fmt;
+
+
+  // read riff chunk
+  if( f->readBlock( (char*)&chunk, sizeof(chunk) ) != sizeof(chunk) ) {
+    kdDebug() << "(K3bWaveDecoder) unable to read from " << f->name() << endl;
+    return 0;
+  }
+  if( qstrncmp( (char*)chunk.ckid, WAV_RIFF_MAGIC, 4 ) ) {
+    kdDebug() << "(K3bWaveDecoder) " << f->name() << ": not a RIFF file." << endl;
+    return 0;
+  }
+
+  // read wave chunk
+  if( f->readBlock( (char*)&riff, sizeof(riff) ) != sizeof(riff) ) {
+    kdDebug() << "(K3bWaveDecoder) unable to read from " << f->name() << endl;
+    return 0;
+  }
+  if( qstrncmp( (char*)riff.wave, WAV_WAVE_MAGIC, 4 ) ) {
+    kdDebug() << "(K3bWaveDecoder) " << f->name() << ": not a WAVE file." << endl;
+    return 0;
+  }
+
+
+  // read fmt chunk
+  if( f->readBlock( (char*)&chunk, sizeof(chunk) ) != sizeof(chunk) ) {
+    kdDebug() << "(K3bWaveDecoder) unable to read from " << f->name() << endl;
+    return 0;
+  }
+  if( qstrncmp( (char*)chunk.ckid, WAV_FMT_MAGIC, 4 ) ) {
+    kdDebug() << "(K3bWaveDecoder) " << f->name() << ": could not find format chunk." << endl;
+    return 0;
+  }
+  if( f->readBlock( (char*)&fmt, sizeof(fmt) ) != sizeof(fmt) ) {
+    kdDebug() << "(K3bWaveDecoder) unable to read from " << f->name() << endl;
+    return 0;
+  }
+  if( le_a_to_u_short(fmt.fmt_tag) != 1 ||
+      le_a_to_u_short(fmt.channels) > 2 ||
+      ( le_a_to_u_short(fmt.bits_per_sample) != 16 &&
+	le_a_to_u_short(fmt.bits_per_sample) != 8 ) ) {
+    kdDebug() << "(K3bWaveDecoder) " << f->name() << ": wrong format:" << endl
+	      << "                format:      " << le_a_to_u_short(fmt.fmt_tag) << endl
+	      << "                channels:    " << le_a_to_u_short(fmt.channels) << endl
+	      << "                samplerate:  " << le_a_to_u_long(fmt.sample_rate) << endl
+	      << "                bits/sample: " << le_a_to_u_short(fmt.bits_per_sample) << endl;
+    return 0;
+  }
+
+  int sampleRate = le_a_to_u_long(fmt.sample_rate);
+  int ch = le_a_to_u_short(fmt.channels);
+  int sampleSize = le_a_to_u_short(fmt.bits_per_sample);;
+  if( samplerate )
+    *samplerate = sampleRate;
+  if( channels )
+    *channels = ch;
+  if( samplesize )
+    *samplesize = sampleSize;
+
+  // skip all other (unknown) format chunk fields
+  if( !f->at( f->at() + le_a_to_u_long(chunk.cksize) - sizeof(fmt) ) ) {
+    kdDebug() << "(K3bWaveDecoder) " << f->name() << ": could not seek in file." << endl;
+    return 0;
+  }
+
+
+  // find data chunk
+  bool foundData = false;
+  while( !foundData ) {
+    if( f->readBlock( (char*)&chunk, sizeof(chunk) ) != sizeof(chunk) ) {
+      kdDebug() << "(K3bWaveDecoder) unable to read from " << f->name() << endl;
+      return 0;
+    }
+
+    // skip chunk data of unknown chunk
+    if( qstrncmp( (char*)chunk.ckid, WAV_DATA_MAGIC, 4 ) ) {
+      kdDebug() << "(K3bWaveDecoder) skipping chunk: " << (char*)chunk.ckid << endl;
+      if( !f->at( f->at() + le_a_to_u_long(chunk.cksize) ) ) {
+        kdDebug() << "(K3bWaveDecoder) " << f->name() << ": could not seek in file." << endl;
+        return 0;
+      }
+    }
+    else
+      foundData = true;
+  }
+
+  // found data chunk
+  unsigned long size = le_a_to_u_long(chunk.cksize);
+  if( f->at() + size > (unsigned long)f->size() ) {
+    kdDebug() << "(K3bWaveDecoder) " << f->name() << ": file length " << f->size() 
+    << " does not match length from WAVE header " << f->at() << " + " << size
+    << " - using actual length." << endl;
+    size = (f->size() - f->at());
+  }
+
+  return size;
+}
+
+
+class K3bWaveDecoder::Private {
+public:
+  Private()
+    : buffer(0),
+      bufferSize(0) {
+  }
+
+  QFile* file;
+
+  long headerLength;
+  int sampleRate;
+  int channels;
+  int sampleSize;
+  unsigned long size;
+  unsigned long alreadyRead;
+
+  char* buffer;
+  int bufferSize;
+};
+
+
+K3bWaveDecoder::K3bWaveDecoder( QObject* parent, const char* name )
+  : K3bAudioDecoder( parent, name )
+{
+  d = new Private();
+  d->file = new QFile();
+}
+
+
+K3bWaveDecoder::~K3bWaveDecoder()
+{
+  delete d->file;
+  delete d;
+}
+
+
+int K3bWaveDecoder::decodeInternal( char* _data, int maxLen )
+{
+  int read = 0;
+
+  maxLen = QMIN( maxLen, (int)(d->size - d->alreadyRead) );
+
+  if( d->sampleSize == 16 ) {
+    read = d->file->readBlock( _data, maxLen );
+    if( read > 0 ) {
+      d->alreadyRead += read;
+
+      if( read % 2 > 0 ) {
+	kdDebug() << "(K3bWaveDecoder) data length is not a multiple of 2! Cutting data." << endl;
+	read -= 1;
+      }
+
+      // swap bytes
+      char buf;
+      for( int i = 0; i < read; i+=2 ) {
+	buf = _data[i];
+	_data[i] = _data[i+1];
+	_data[i+1] = buf;
+      }
+    }
+  }
+  else {
+    if( !d->buffer ) {
+      d->buffer = new char[maxLen/2];
+      d->bufferSize = maxLen/2;
+    }
+
+    read = d->file->readBlock( d->buffer, QMIN(maxLen/2, d->bufferSize) );
+    d->alreadyRead += read;
+
+    // stretch samples to 16 bit
+    from8BitTo16BitBeSigned( d->buffer, _data, read );
+
+    read *= 2;
+  }
+
+  return read;
+}
+
+
+bool K3bWaveDecoder::analyseFileInternal( K3b::Msf& frames, int& samplerate, int& channels )
+{
+  // handling wave files is very easy...
+  if( initDecoderInternal() ) {
+
+    //
+    // d->size is the number of bytes in the wave file
+    //
+    unsigned long size = d->size;
+    if( d->sampleRate != 44100 )
+      size = (int)((double)size * 44100.0 / (double)d->sampleRate);
+
+    if( d->sampleSize == 8 )
+      size *= 2;
+    if( d->channels == 1 )
+      size *= 2;
+
+    //
+    // we pad to a multiple of 2352 bytes 
+    // (the actual padding of zero data will be done by the K3bAudioDecoder class)
+    //
+    if( (size%2352) > 0 )
+      size = (size/2352) + 1;
+    else
+      size = size/2352;
+
+    frames = size;
+    samplerate = d->sampleRate;
+    channels = d->channels;
+    return true;
+  }
+  else
+    return false;
+}
+
+
+bool K3bWaveDecoder::initDecoderInternal()
+{
+  cleanup();
+
+  d->file->setName( filename() );
+  if( !d->file->open( IO_ReadOnly ) ) {
+    kdDebug() << "(K3bWaveDecoder) could not open file." << endl;
+    return false;
+  }
+
+  // skip the header
+  d->size = identifyWaveFile( d->file, &d->sampleRate, &d->channels, &d->sampleSize );
+  if( d->size <= 0 ) {
+    kdDebug() << "(K3bWaveDecoder) no supported wave file." << endl;
+    cleanup();
+    return false;
+  }
+
+  d->headerLength = d->file->at();
+  d->alreadyRead = 0;
+
+  return true;
+}
+
+
+bool K3bWaveDecoder::seekInternal( const K3b::Msf& pos )
+{
+  return( d->file->at( d->headerLength + (pos.totalFrames()*2352) ) );
+}
+
+
+void K3bWaveDecoder::cleanup()
+{
+  if( d->file->isOpen() )
+    d->file->close();
+}
+
+
+QString K3bWaveDecoder::fileType() const
+{
+  return i18n("WAVE");
+}
+
+
+QStringList K3bWaveDecoder::supportedTechnicalInfos() const
+{
+  return QStringList::split( ";", 
+			     i18n("Channels") + ";" +
+			     i18n("Sampling Rate") + ";" +
+			     i18n("Sample Size") );
+}
+
+
+QString K3bWaveDecoder::technicalInfo( const QString& name ) const
+{
+  if( name == i18n("Channels") )
+    return QString::number(d->channels);
+  else if( name == i18n("Sampling Rate") )
+    return i18n("%1 Hz").arg(d->sampleRate);
+  else if( name == i18n("Sample Size") )
+    return i18n("%1 bits").arg(d->sampleSize);
+  else
+    return QString::null;
+}
+
+
+K3bWaveDecoderFactory::K3bWaveDecoderFactory( QObject* parent, const char* name )
+  : K3bAudioDecoderFactory( parent, name )
+{
+}
+
+
+K3bWaveDecoderFactory::~K3bWaveDecoderFactory()
+{
+}
+
+
+K3bAudioDecoder* K3bWaveDecoderFactory::createDecoder( QObject* parent, 
+						       const char* name ) const
+{
+  return new K3bWaveDecoder( parent, name );
+}
+
+
+bool K3bWaveDecoderFactory::canDecode( const KURL& url ) 
+{
+  QFile f( url.path() );
+  if( !f.open(	IO_ReadOnly ) ) {
+    kdDebug() << "(K3bWaveDecoder) could not open file " << url.path() << endl;
+    return false;
+  }
+
+  return (identifyWaveFile( &f ) > 0);
+}
+
+
+
+#include "k3bwavedecoder.moc"
diff --git a/plugins/decoder/wave/k3bwavedecoder.h b/plugins/decoder/wave/k3bwavedecoder.h
new file mode 100644
index 0000000..3f92e9a
--- /dev/null
+++ b/plugins/decoder/wave/k3bwavedecoder.h
@@ -0,0 +1,74 @@
+/* 
+ *
+ * $Id: k3bwavedecoder.h 619556 2007-01-03 17:38:12Z 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.
+ */
+
+#ifndef _K3B_WAVE_DECODER_H_
+#define _K3B_WAVE_DECODER_H_
+
+#include <k3baudiodecoder.h>
+#include <k3b_export.h>
+
+#include <kurl.h>
+#include <qcstring.h>
+
+
+class QFile;
+
+
+class LIBK3B_EXPORT K3bWaveDecoderFactory : public K3bAudioDecoderFactory
+{
+  Q_OBJECT
+
+ public:
+  K3bWaveDecoderFactory( QObject* parent = 0, const char* name = 0 );
+  ~K3bWaveDecoderFactory();
+
+  bool canDecode( const KURL& filename );
+
+  int pluginSystemVersion() const { return 3; }
+
+  K3bAudioDecoder* createDecoder( QObject* parent = 0, 
+				  const char* name = 0 ) const;
+};
+
+
+class LIBK3B_EXPORT K3bWaveDecoder : public K3bAudioDecoder
+{
+  Q_OBJECT
+
+ public:
+  K3bWaveDecoder( QObject* parent = 0, const char* name = 0 );
+  ~K3bWaveDecoder();
+
+  void cleanup();
+
+  bool seekInternal( const K3b::Msf& );
+
+  QString fileType() const;
+
+  QStringList supportedTechnicalInfos() const;
+
+  QString technicalInfo( const QString& ) const;
+
+ protected:
+  bool analyseFileInternal( K3b::Msf& frames, int& samplerate, int& channels );
+  bool initDecoderInternal();
+  int decodeInternal( char* data, int maxLen );
+
+ private:
+  class Private;
+  Private* d;
+};
+
+#endif
diff --git a/plugins/decoder/wave/k3bwavedecoder.plugin b/plugins/decoder/wave/k3bwavedecoder.plugin
new file mode 100644
index 0000000..7b0a4f4
--- /dev/null
+++ b/plugins/decoder/wave/k3bwavedecoder.plugin
@@ -0,0 +1,9 @@
+[K3b Plugin]
+Lib=libk3bwavedecoder
+Group=AudioDecoder
+Name=K3b Wave Decoder
+Author=Sebastian Trueg
+Email=trueg@k3b.org
+Version=3.0
+Comment=Decoding module to decode wave files
+License=GPL