Added KDE3 version of SoundKonverter

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/soundkonverter@1097614 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 146 insertions, 0 deletions

diff --git a/src/metadata/m4a/mp4audiosampleentry.cpp b/src/metadata/m4a/mp4audiosampleentry.cpp
new file mode 100644
index 0000000..fb87547
--- /dev/null
+++ b/src/metadata/m4a/mp4audiosampleentry.cpp
@@ -0,0 +1,146 @@
+/***************************************************************************
+    copyright            : (C) 2002, 2003, 2006 by Jochen Issing
+    email                : [email protected]
+ ***************************************************************************/
+
+/***************************************************************************
+ *   This library is free software; you can redistribute it and/or modify  *
+ *   it  under the terms of the GNU Lesser General Public License version  *
+ *   2.1 as published by the Free Software Foundation.                     *
+ *                                                                         *
+ *   This library 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     *
+ *   Lesser General Public License for more details.                       *
+ *                                                                         *
+ *   You should have received a copy of the GNU Lesser General Public      *
+ *   License along with this library; if not, write to the Free Software   *
+ *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,            *
+ *   MA  02110-1301  USA                                                   *
+ ***************************************************************************/
+
+#include <iostream>
+#include "mp4audiosampleentry.h"
+#include "mp4isobox.h"
+#include "mp4file.h"
+#include "mp4propsproxy.h"
+
+using namespace TagLib;
+
+class MP4::Mp4AudioSampleEntry::Mp4AudioSampleEntryPrivate
+{
+public:
+  TagLib::uint channelcount;
+  TagLib::uint samplerate;
+  TagLib::uint bitrate;
+};
+
+MP4::Mp4AudioSampleEntry::Mp4AudioSampleEntry( TagLib::File* file, MP4::Fourcc fourcc, uint size, long offset )
+	:Mp4SampleEntry(file, fourcc, size, offset)
+{
+  d = new MP4::Mp4AudioSampleEntry::Mp4AudioSampleEntryPrivate();
+}
+
+MP4::Mp4AudioSampleEntry::~Mp4AudioSampleEntry()
+{
+  delete d;
+}
+
+TagLib::uint MP4::Mp4AudioSampleEntry::channels() const
+{
+  return d->channelcount;
+}
+
+TagLib::uint MP4::Mp4AudioSampleEntry::samplerate() const
+{
+  return d->samplerate;
+}
+
+TagLib::uint MP4::Mp4AudioSampleEntry::bitrate() const
+{
+  return d->bitrate;
+}
+
+void MP4::Mp4AudioSampleEntry::parseEntry()
+{
+  TagLib::MP4::File* mp4file = dynamic_cast<TagLib::MP4::File*>(file());
+  if(!mp4file)
+    return;
+
+  // read 8 reserved bytes
+  mp4file->seek( 8, TagLib::File::Current );
+  // read channelcount
+  if(!mp4file->readShort( d->channelcount ))
+    return;
+  // seek over samplesize, pre_defined and reserved
+  mp4file->seek( 6, TagLib::File::Current );
+  // read samplerate
+  if(!mp4file->readInt( d->samplerate ))
+    return;
+
+  // register box at proxy
+  mp4file->propProxy()->registerAudioSampleEntry( this );
+
+
+  //std::cout << "fourcc of audio sample entry: " << fourcc().toString() << std::endl;
+  // check for both mp4a (plain files) and drms (encrypted files)
+  if( (fourcc() == MP4::Fourcc("mp4a")) ||
+      (fourcc() == MP4::Fourcc("drms"))  )
+  {
+    TagLib::MP4::Fourcc fourcc;
+    TagLib::uint        esds_size;
+
+    if (!mp4file->readSizeAndType( esds_size, fourcc ))
+	return;
+
+    // read esds' main parts
+    if( size()-48 > 0 )
+      ByteVector flags_version = mp4file->readBlock(4);
+    else
+      return;
+
+    ByteVector EsDescrTag = mp4file->readBlock(1);
+    // first 4 bytes contain full box specifics (version & flags)
+    // upcoming byte must be ESDescrTag (0x03)
+    if( EsDescrTag[0] == 0x03 )
+    {
+      TagLib::uint descr_len = mp4file->readSystemsLen();
+      TagLib::uint EsId;
+      if( !mp4file->readShort( EsId ) )
+	return;
+      ByteVector priority = mp4file->readBlock(1);
+      if( descr_len < 20 )
+	return;
+    }
+    else
+    {
+      TagLib::uint EsId;
+      if( !mp4file->readShort( EsId ) )
+	return;
+    }
+    // read decoder configuration tag (0x04)
+    ByteVector DecCfgTag = mp4file->readBlock(1);
+    if( DecCfgTag[0] != 0x04 )
+      return;
+    // read decoder configuration length
+    // TagLib::uint deccfg_len = mp4file->readSystemsLen();
+    // read object type Id
+    ByteVector objId = mp4file->readBlock(1);
+    // read stream type id
+    ByteVector strId = mp4file->readBlock(1);
+    // read buffer Size DB
+    ByteVector bufferSizeDB = mp4file->readBlock(3);
+    // read max bitrate
+    TagLib::uint max_bitrate;
+    if( !mp4file->readInt( max_bitrate ) )
+      return;
+    // read average bitrate
+    if( !mp4file->readInt( d->bitrate ) )
+      return;
+    // skip the rest
+    mp4file->seek( offset()+size()-8, File::Beginning );
+  }
+  else
+    mp4file->seek( size()-36, File::Current );
+}
+