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

1 files changed, 844 insertions, 0 deletions

diff --git a/libk3b/projects/videocd/mpeginfo/k3bmpeginfo.cpp b/libk3b/projects/videocd/mpeginfo/k3bmpeginfo.cpp
new file mode 100644
index 0000000..583a0aa
--- /dev/null
+++ b/libk3b/projects/videocd/mpeginfo/k3bmpeginfo.cpp
@@ -0,0 +1,844 @@
+/*
+*
+* $Id: k3bmpeginfo.cpp 619556 2007-01-03 17:38:12Z trueg $
+* Copyright (C) 2003-2004 Christian Kvasny <chris@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.
+*/
+
+// kde includes
+#include <klocale.h>
+
+// k3b includes
+#include "k3bmpeginfo.h"
+
+static const double frame_rates[ 16 ] =
+    {
+        0.0, 24000.0 / 1001, 24.0, 25.0,
+        30000.0 / 1001, 30.0, 50.0, 60000.0 / 1001,
+        60.0, 0.0,
+    };
+
+K3bMpegInfo::K3bMpegInfo( const char* filename )
+        : m_mpegfile( 0 ),
+        m_filename( filename ),
+        m_done( false ),
+        m_buffstart( 0 ),
+        m_buffend( 0 ),
+        m_buffer( 0 ),
+        m_initial_TS( 0.0 )
+{
+
+    mpeg_info = new Mpeginfo();
+
+    m_mpegfile = fopen( filename, "rb" );
+
+    if ( m_mpegfile == 0 ) {
+        kdDebug() << QString( "Unable to open %1" ).arg( m_filename ) << endl;
+        return ;
+    }
+
+    if ( fseeko( m_mpegfile, 0, SEEK_END ) ) {
+        kdDebug() << QString( "Unable to seek in file %1" ).arg( m_filename ) << endl;
+        return ;
+    }
+
+    llong lof = ftello( m_mpegfile );
+
+    if ( lof == -1 ) {
+        kdDebug() << QString( "Seeking to end of input file %1 failed." ).arg( m_filename ) << endl;
+        //give up..
+        return ;
+    } else
+        m_filesize = lof;
+
+    // nothing to do on an empty file
+    if ( !m_filesize ) {
+        kdDebug() << QString( "File %1 is empty." ).arg( m_filename ) << endl;
+        m_error_string = i18n( "File %1 is empty." ).arg( m_filename );
+        return ;
+    }
+
+    m_buffer = new byte[ BUFFERSIZE ];
+
+    MpegParsePacket ( );
+
+}
+
+K3bMpegInfo::~K3bMpegInfo()
+{
+    if ( m_buffer ) {
+        delete[] m_buffer;
+    }
+    if ( m_mpegfile ) {
+        fclose( m_mpegfile );
+    }
+
+    delete mpeg_info;
+}
+bool K3bMpegInfo::MpegParsePacket ()
+{
+
+    /* verify the packet begins with a pack header */
+    if ( !EnsureMPEG( 0, MPEG_PACK_HEADER_CODE ) ) {
+        llong code = GetNBytes( 0, 4 );
+
+        kdDebug() << QString( "(K3bMpegInfo::mpeg_parse_packet ()) pack header code 0x%1 expected, but 0x%2 found" ).arg( 0x00000100 + MPEG_PACK_HEADER_CODE, 0, 16 ).arg( code, 0, 16 ) << endl;
+
+        if ( code == 0x00000100 + MPEG_SEQUENCE_CODE ) {
+            kdDebug() << "...this looks like a elementary video stream but a multiplexed program stream was required." << endl;
+            m_error_string = i18n( "This looks like a elementary video stream but a multiplexed program stream was required." );
+        }
+
+        if ( ( 0xfff00000 & code ) == 0xfff00000 ) {
+            kdDebug() << "...this looks like a elementary audio stream but a multiplexed program stream was required." << endl;
+            m_error_string = i18n( "This looks like a elementary audio stream but a multiplexed program stream was required." );
+        }
+
+        if ( code == 0x52494646 ) {
+            kdDebug() << "...this looks like a RIFF header but a plain multiplexed program stream was required." << endl;
+            m_error_string = i18n( "This looks like a RIFF header but a plain multiplexed program stream was required." );
+        }
+
+        return false;
+    }
+
+
+    /* take a look at the pack header */
+    int offset = 0;
+    while ( GetByte( offset ) == 0x00 )
+        offset ++;
+    //here we're on the first non null byte let's get back to leave two zeros (packet start code)
+    offset -= 2;
+
+    if ( offset != 0 ) {
+        // we actually skipped some zeroes
+        kdDebug() << QString( "Skipped %1 zeroes at start of file" ).arg( offset ) << endl;
+    }
+
+    // here while schleife
+    while ( offset != -1 ) {
+        offset = MpegParsePacket( offset );
+    }
+
+    /*
+        int pkt = 0;
+        offset = FindNextMarker( 0, MPEG_PACK_HEADER_CODE );
+     
+        while ( offset != -1 ) {
+            pkt++;
+            offset = FindNextMarker( offset+1, MPEG_PACK_HEADER_CODE );
+        }
+     
+        kdDebug() << "Pkt found: " << pkt << endl;
+    */
+
+    //seek the file duration by fetching the last PACK
+    //and reading its timestamp
+    llong last_pack = bdFindNextMarker( m_filesize - 13, MPEG_PACK_HEADER_CODE );
+    // -12 because a PACK is at least 12 bytes
+    double duration;
+    last_pack += 4;
+    int bits = GetByte( last_pack ) >> 4;
+
+    if ( bits == 0x2 )                /* %0010 ISO11172-1 */
+    {
+        duration = ReadTS( last_pack );
+    } else if ( bits >> 2 == 0x1 )                /* %01xx ISO13818-1 */
+    {
+        duration = ReadTSMpeg2( last_pack );
+    } else {
+        kdDebug() << QString( "no timestamp found" ) << endl;
+        duration = ReadTS( last_pack );
+    }
+
+    mpeg_info->playing_time = duration - m_initial_TS;
+
+
+    if ( !mpeg_info->has_video )
+        for ( int i = 0; i < 2; i++ )
+            if ( mpeg_info->video[ i ].seen )
+                mpeg_info->has_video = true;
+
+    if ( !mpeg_info->has_audio )
+        for ( int i = 0; i < 2; i++ )
+            if ( mpeg_info->audio[ i ].seen )
+                mpeg_info->has_audio = true;
+
+    return true;
+}
+
+llong K3bMpegInfo::MpegParsePacket ( llong offset )
+{
+    byte mark = 0;
+    uint size = 0;
+
+    /* continue until start code seen */
+    offset = FindNextMarker( offset, &mark );
+
+    if ( offset < 0 )
+        return offset;
+
+    switch ( mark ) {
+            int bits;
+
+        case MPEG_PACK_HEADER_CODE:
+            // kdDebug() << QString( "MPEG_PACK_HEADER_CODE @ %1" ).arg( offset ) << endl;
+
+            offset += 4;
+
+            if ( mpeg_info->version != MPEG_VERS_INVALID )
+                break;
+
+            bits = GetByte( offset ) >> 4;
+
+            if ( bits == 0x2 )                /* %0010 ISO11172-1 */
+            {
+                mpeg_info->version = MPEG_VERS_MPEG1;
+
+                unsigned long muxrate = 0;
+
+                muxrate = ( GetByte( offset + 5 ) & 0x7F ) << 15;
+                muxrate |= ( GetByte( offset + 6 ) << 7 );
+                muxrate |= ( GetByte( offset + 7 ) >> 1 );
+
+                mpeg_info->muxrate = muxrate * 50 * 8;
+
+                if ( m_initial_TS == 0.0 )
+                {
+                    m_initial_TS = ReadTS( offset );
+                    kdDebug() << QString( "Initial TS = %1" ).arg( m_initial_TS ) << endl;
+                }
+
+            } else if ( bits >> 2 == 0x1 )                /* %01xx ISO13818-1 */
+            {
+                mpeg_info->version = MPEG_VERS_MPEG2;
+
+                unsigned long muxrate = 0;
+                muxrate = GetByte( offset + 6 ) << 14;
+                muxrate |= GetByte( offset + 7 ) << 6;
+                muxrate |= GetByte( offset + 8 ) >> 2;
+
+                mpeg_info->muxrate = muxrate * 50 * 8;
+
+                if ( m_initial_TS == 0.0 )
+                {
+                    m_initial_TS = ReadTSMpeg2( offset );
+                    kdDebug() << QString( "Initial TS = %1" ).arg( m_initial_TS ) << endl;
+                }
+
+            } else {
+                kdDebug() << QString( "packet not recognized as either version 1 or 2 (%1)" ).arg( bits ) << endl;
+                mpeg_info->version = MPEG_VERS_INVALID;
+                return -1;
+            }
+            break;
+
+        case MPEG_SYSTEM_HEADER_CODE:
+        case MPEG_PAD_CODE:
+        case MPEG_PRIVATE_1_CODE:
+        case MPEG_VIDEO_E0_CODE:
+        case MPEG_VIDEO_E1_CODE:
+        case MPEG_VIDEO_E2_CODE:
+        case MPEG_AUDIO_C0_CODE:
+        case MPEG_AUDIO_C1_CODE:
+        case MPEG_AUDIO_C2_CODE:
+
+            offset += 4;
+            size = GetSize( offset );
+            offset += 2;
+            // kdDebug() << QString( "offset = %1, size = %2" ).arg( offset ).arg( size ) << endl;
+
+            switch ( mark ) {
+                case MPEG_SYSTEM_HEADER_CODE:
+                    // kdDebug() << QString( "Systemheader: %1" ).arg( m_code, 0, 16 ) << endl;
+                    break;
+
+                case MPEG_VIDEO_E0_CODE:
+                case MPEG_VIDEO_E1_CODE:
+                case MPEG_VIDEO_E2_CODE:
+                    ParseVideo( offset, mark );
+                    // _analyze_video_pes (code & 0xff, buf + pos, size, !parse_pes, ctx);
+                    if ( mpeg_info->has_video && mpeg_info->has_audio ) {
+                        return -1;
+                    } else if ( mark == MPEG_VIDEO_E0_CODE || mpeg_info->version == MPEG_VERS_MPEG2 && mark == MPEG_VIDEO_E1_CODE || mpeg_info->version == MPEG_VERS_MPEG1 && mark == MPEG_VIDEO_E2_CODE ) {
+                        mpeg_info->has_video = true;
+                        offset = FindNextAudio( offset );
+                    }
+                    break;
+                case MPEG_AUDIO_C0_CODE:
+                case MPEG_AUDIO_C1_CODE:
+                case MPEG_AUDIO_C2_CODE:
+                    offset = SkipPacketHeader( offset - 6 );
+                    ParseAudio( offset, mark );
+                    // audio packet doesn't begin with 0xFFF
+                    if ( !mpeg_info->audio[ GetAudioIdx( mark ) ].seen ) {
+                        int a_idx = GetAudioIdx( mark );
+                        while ( ( offset < m_filesize - 10 ) && !mpeg_info->audio[ a_idx ].seen ) {
+                            if ( ( GetByte( offset ) == 0xFF ) && ( GetByte( offset + 1 ) & 0xF0 ) == 0xF0 )
+                                ParseAudio( offset, mark );
+                            offset++;
+                        }
+                    }
+
+                    mpeg_info->has_audio = true;
+                    if ( mpeg_info->has_video )
+                        return -1;
+
+                    offset = FindNextVideo( offset );
+                    break;
+
+                case MPEG_PRIVATE_1_CODE:
+                    kdDebug() << QString( "PrivateCode: %1" ).arg( mark, 0, 16 ) << endl;
+                    break;
+            }
+            break;
+
+        case MPEG_PROGRAM_END_CODE:
+            kdDebug() << QString( "ProgramEndCode: %1" ).arg( mark, 0, 16 ) << endl;
+            offset += 4;
+            break;
+
+        case MPEG_PICTURE_CODE:
+            kdDebug() << QString( "PictureCode: %1" ).arg( mark, 0, 16 ) << endl;
+            offset += 3;
+            break;
+
+        default:
+            offset += 4;
+            break;
+    }
+
+    return offset;
+}
+
+byte K3bMpegInfo::GetByte( llong offset )
+{
+    unsigned long nread;
+    if ( ( offset >= m_buffend ) || ( offset < m_buffstart ) ) {
+
+        if ( fseeko( m_mpegfile, offset, SEEK_SET ) ) {
+            kdDebug() << QString( "could not get seek to offset (%1) in file %2 (size:%3)" ).arg( offset ).arg( m_filename ).arg( m_filesize ) << endl;
+            return 0x11;
+        }
+        nread = fread( m_buffer, 1, BUFFERSIZE, m_mpegfile );
+        m_buffstart = offset;
+        m_buffend = offset + nread;
+        if ( ( offset >= m_buffend ) || ( offset < m_buffstart ) ) {
+            // weird
+            kdDebug() << QString( "could not get offset %1 in file %2 [%3]" ).arg( offset ).arg( m_filename ).arg( m_filesize ) << endl;
+            return 0x11;
+        }
+    }
+    return m_buffer[ offset - m_buffstart ];
+}
+
+// same as above but improved for backward search
+byte K3bMpegInfo::bdGetByte( llong offset )
+{
+    unsigned long nread;
+    if ( ( offset >= m_buffend ) || ( offset < m_buffstart ) ) {
+        llong start = offset - BUFFERSIZE + 1 ;
+        start = start >= 0 ? start : 0;
+
+        fseeko( m_mpegfile, start, SEEK_SET );
+
+        nread = fread( m_buffer, 1, BUFFERSIZE, m_mpegfile );
+        m_buffstart = start;
+        m_buffend = start + nread;
+        if ( ( offset >= m_buffend ) || ( offset < m_buffstart ) ) {
+            // weird
+            kdDebug() << QString( "could not get offset %1 in file %2 [%3]" ).arg( offset ).arg( m_filename ).arg( m_filesize ) << endl;
+
+            return 0x11;
+        }
+    }
+    return m_buffer[ offset - m_buffstart ];
+}
+
+
+llong K3bMpegInfo::GetNBytes( llong offset, int n )
+{
+    llong nbytes = 0;
+    n--;
+    for ( int i = 0; i < n; i++ )
+        ( ( char* ) & nbytes ) [ n - i ] = GetByte( offset + i );
+
+    return nbytes;
+
+}
+
+// get a two byte size
+unsigned short int K3bMpegInfo::GetSize( llong offset )
+{
+    return GetByte( offset ) * 256 + GetByte( offset + 1 );
+    // return GetNBytes( offset, 2 );
+
+}
+
+bool K3bMpegInfo::EnsureMPEG( llong offset, byte mark )
+{
+    if ( ( GetByte( offset ) == 0x00 ) &&
+            ( GetByte( offset + 1 ) == 0x00 ) &&
+            ( GetByte( offset + 2 ) == 0x01 ) &&
+            ( GetByte( offset + 3 ) == mark ) )
+        return true;
+    else
+        return false;
+}
+
+
+// find next 0x 00 00 01 xx sequence, returns offset or -1 on err
+llong K3bMpegInfo::FindNextMarker( llong from )
+{
+    llong offset;
+    for ( offset = from; offset < ( m_filesize - 4 ); offset++ ) {
+        if (
+            ( GetByte( offset + 0 ) == 0x00 ) &&
+            ( GetByte( offset + 1 ) == 0x00 ) &&
+            ( GetByte( offset + 2 ) == 0x01 ) ) {
+            return offset;
+        }
+    }
+    return -1;
+}
+
+// find next 0x 00 00 01 xx sequence, returns offset or -1 on err and
+// change mark to xx
+llong K3bMpegInfo::FindNextMarker( llong from, byte* mark )
+{
+    llong offset = FindNextMarker( from );
+    if ( offset >= 0 ) {
+        *mark = GetByte( offset + 3 );
+        return offset;
+    } else {
+        return -1;
+    }
+}
+
+// find next 0X00 00 01 mark
+llong K3bMpegInfo::FindNextMarker( llong from, byte mark )
+{
+    llong offset = from;
+    while ( offset >= 0 ) {
+        offset = FindNextMarker( offset );
+        if ( offset < 0 ) {
+            return -1;
+        }
+        if ( EnsureMPEG( offset, mark ) ) {
+            return offset;
+        } else
+            offset++;
+    }
+
+    //shouldn't be here
+    return -1;
+}
+
+llong K3bMpegInfo::bdFindNextMarker( llong from, byte mark )
+{
+    llong offset;
+    for ( offset = from; offset >= 0; offset-- ) {
+        if (
+            ( bdGetByte( offset ) == 0x00 ) &&
+            ( bdGetByte( offset + 1 ) == 0x00 ) &&
+            ( bdGetByte( offset + 2 ) == 0x01 ) &&
+            ( bdGetByte( offset + 3 ) == mark ) ) {
+            return offset;
+        }
+    }
+    return -1;
+}
+
+llong K3bMpegInfo::bdFindNextMarker( llong from, byte* mark )
+{
+    llong offset;
+    for ( offset = from; offset >= 0; offset-- ) {
+        if ( ( bdGetByte( offset ) == 0x00 ) &&
+                ( bdGetByte( offset + 1 ) == 0x00 ) &&
+                ( bdGetByte( offset + 2 ) == 0x01 ) ) {
+            *mark = bdGetByte( offset + 3 );
+            return offset;
+        }
+    }
+    return -1;
+
+}
+
+llong K3bMpegInfo::FindNextVideo( llong from )
+{
+    llong offset = from;
+    while ( offset >= 0 ) {
+        offset = FindNextMarker( offset );
+        if ( offset < 0 ) {
+            return -1;
+        }
+        if ( EnsureMPEG( offset, MPEG_VIDEO_E0_CODE ) || EnsureMPEG( offset, MPEG_VIDEO_E1_CODE ) || EnsureMPEG( offset, MPEG_VIDEO_E2_CODE ) ) {
+            return offset;
+        } else
+            offset++;
+    }
+
+    //shouldn't be here
+    return -1;
+}
+
+llong K3bMpegInfo::FindNextAudio( llong from )
+{
+    llong offset = from;
+    while ( offset >= 0 ) {
+        offset = FindNextMarker( offset );
+        if ( offset < 0 ) {
+            return -1;
+        }
+        if ( EnsureMPEG( offset, MPEG_AUDIO_C0_CODE ) || EnsureMPEG( offset, MPEG_AUDIO_C1_CODE ) || EnsureMPEG( offset, MPEG_AUDIO_C2_CODE ) ) {
+            return offset;
+        } else
+            offset++;
+    }
+
+    return -1;
+}
+
+
+int K3bMpegInfo::GetVideoIdx ( byte marker )
+{
+    switch ( marker ) {
+        case MPEG_VIDEO_E0_CODE:
+            return 0;
+            break;
+
+        case MPEG_VIDEO_E1_CODE:
+            return 1;
+            break;
+
+        case MPEG_VIDEO_E2_CODE:
+            return 2;
+            break;
+
+        default:
+            kdDebug() << "VideoCode not reached" << endl;
+            break;
+    }
+
+    return -1;
+}
+
+int K3bMpegInfo::GetAudioIdx ( byte marker )
+{
+    switch ( marker ) {
+        case MPEG_AUDIO_C0_CODE:
+            return 0;
+            break;
+
+        case MPEG_AUDIO_C1_CODE:
+            return 1;
+            break;
+
+        case MPEG_AUDIO_C2_CODE:
+            return 2;
+            break;
+
+        default:
+            kdDebug() << "VideoCode not reached" << endl;
+            break;
+    }
+
+    return -1;
+}
+
+llong K3bMpegInfo::SkipPacketHeader( llong offset )
+{
+    byte tmp_byte;
+    if ( mpeg_info->version == MPEG_VERS_MPEG1 ) {
+        // skip startcode and packet size
+        offset += 6;
+        //remove stuffing bytes
+        tmp_byte = GetByte( offset );
+        while ( tmp_byte & 0x80 )
+            tmp_byte = GetByte( ++offset );
+
+        if ( ( tmp_byte & 0xC0 ) == 0x40 )                // next two bits are 01
+            offset += 2;
+
+        tmp_byte = GetByte( offset );
+        if ( ( tmp_byte & 0xF0 ) == 0x20 )
+            offset += 5;
+        else if ( ( tmp_byte & 0xF0 ) == 0x30 )
+            offset += 10;
+        else
+            offset++;
+
+        return offset;
+    } else if ( mpeg_info->version == MPEG_VERS_MPEG2 ) {
+        return ( offset + 9 + GetByte( offset + 8 ) );
+    } else
+        return ( offset + 10 );
+}
+
+void K3bMpegInfo::ParseAudio ( llong offset, byte marker )
+{
+    unsigned brate, srate;
+    bool mpeg2_5 = false;
+
+    const int a_idx = GetAudioIdx( marker );
+
+    if ( mpeg_info->audio[ a_idx ].seen )                /* we have it already */
+        return ;
+
+    if ( ( GetByte( offset ) != 0xFF ) || ( ( GetByte( offset + 1 ) & 0xF0 ) != 0xF0 ) ) {
+        // doesn't start with 12 bits set
+        if ( ( GetByte( offset ) != 0xFF ) || ( ( GetByte( offset + 1 ) & 0xE0 ) != 0xE0 ) ) {
+            // doesn't start with 11 bits set
+            return ;
+        } else {
+            // start with 11 bits set
+            mpeg2_5 = true;
+        }
+    }
+
+    // Find mpeg version 1.0 or 2.0
+    if ( GetByte( offset + 1 ) & 0x08 ) {
+        if ( !mpeg2_5 )
+            mpeg_info->audio[ a_idx ].version = 1;
+        else
+            return ; // invalid 01 encountered
+    } else {
+        if ( !mpeg2_5 )
+            mpeg_info->audio[ a_idx ].version = 2;
+        else
+            mpeg_info->audio[ a_idx ].version = 3; //for mpeg 2.5
+    }
+
+    // Find Layer
+    mpeg_info->audio[ a_idx ].layer = ( GetByte( offset + 1 ) & 0x06 ) >> 1;
+    switch ( mpeg_info->audio[ a_idx ].layer ) {
+        case 0:
+            mpeg_info->audio[ a_idx ].layer = 0;
+            break;
+        case 1:
+            mpeg_info->audio[ a_idx ].layer = 3;
+            break;
+        case 2:
+            mpeg_info->audio[ a_idx ].layer = 2;
+            break;
+        case 3:
+            mpeg_info->audio[ a_idx ].layer = 1;
+            break;
+    }
+
+    // Protection Bit
+    mpeg_info->audio[ a_idx ].protect = GetByte( offset + 1 ) & 0x01;
+    if ( mpeg_info->audio[ a_idx ].protect )
+        mpeg_info->audio[ a_idx ].protect = 0;
+    else
+        mpeg_info->audio[ a_idx ].protect = 1;
+
+    const unsigned bit_rates[ 4 ][ 16 ] = {
+                                              {
+                                                  0,
+                                              },
+                                              {0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, 0},
+                                              {0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 0},
+                                              {0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 0}
+                                          };
+
+
+    /*  const unsigned bit_rates [ 3 ][ 3 ][ 16 ] = {
+        {
+          {0, },
+          {0, },
+          {0, },
+        },
+        {
+          {0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, 0},
+          {0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 0},
+          {0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 0}
+        },
+        {
+          {0, 32, 48, 56, 64, 80 , 96 , 112, 128, 144, 160, 176, 192, 224, 256, 0},
+          {0, 8, 16, 24, 32, 40, 48, 56, 64 , 80 , 96 , 112, 128, 144, 160, 0},
+          {0, 8, 16, 24, 32, 40, 48, 56, 64 , 80 , 96 , 112, 128, 144, 160, 0}
+        }
+      };
+    */
+
+    const unsigned sampling_rates[ 4 ][ 4 ] = {
+                {
+                    0,
+                },
+                {44100, 48000, 32000, 0},                //mpeg 1
+                {22050, 24000, 16000, 0},                //mpeg 2
+                {11025, 12000, 8000, 0}   //mpeg 2.5
+            };
+
+
+    // Bitrate index and sampling index to pass through the array
+    brate = GetByte( offset + 2 ) >> 4;
+    srate = ( GetByte( offset + 2 ) & 0x0f ) >> 2;
+
+    mpeg_info->audio[ a_idx ].bitrate = 1024 * bit_rates[ mpeg_info->audio[ a_idx ].layer ][ brate ];
+    mpeg_info->audio[ a_idx ].byterate = ( float ) ( mpeg_info->audio[ a_idx ].bitrate / 8.0 );
+    mpeg_info->audio[ a_idx ].sampfreq = sampling_rates[ mpeg_info->audio[ a_idx ].version ][ srate ];
+
+    // Audio mode
+    mpeg_info->audio[ a_idx ].mode = 1 + ( GetByte( offset + 3 ) >> 6 ) ;
+
+    // Copyright bit
+    if ( GetByte( offset + 3 ) & 0x08 )
+        mpeg_info->audio[ a_idx ].copyright = true;
+    else
+        mpeg_info->audio[ a_idx ].copyright = false;
+
+    // Original/Copy bit
+    if ( GetByte( offset + 3 ) & 0x04 )
+        mpeg_info->audio[ a_idx ].original = true;
+    else
+        mpeg_info->audio[ a_idx ].original = false;
+
+
+    mpeg_info->audio[ a_idx ].seen = true;
+}
+
+void K3bMpegInfo::ParseVideo ( llong offset, byte marker )
+{
+    unsigned long aratio, frate, brate;
+
+    const int v_idx = GetVideoIdx( marker );
+
+    const double aspect_ratios[ 16 ] = {
+                                           0.0000, 1.0000, 0.6735, 0.7031,
+                                           0.7615, 0.8055, 0.8437, 0.8935,
+                                           0.9375, 0.9815, 1.0255, 1.0695,
+                                           1.1250, 1.1575, 1.2015, 0.0000
+                                       };
+
+    if ( mpeg_info->video[ v_idx ].seen )                /* we have it already */
+        return ;
+
+    offset = FindNextMarker( offset + 1, MPEG_SEQUENCE_CODE );
+
+    if ( !offset )
+        return ;
+
+    offset += 4;
+
+    mpeg_info->video[ v_idx ].hsize = GetSize( offset ) >> 4;
+    mpeg_info->video[ v_idx ].vsize = GetSize( offset + 1 ) & 0x0FFF;
+
+    // Get picture rate
+    offset += 3; // after picture sizes
+
+    aratio = ( GetByte( offset ) & 0x0F ) >> 4;
+    mpeg_info->video[ v_idx ].aratio = aspect_ratios[ aratio ];
+
+    //    offset += 3; // after picture sizes
+    frate = GetByte( offset ) & 0x0F;
+    mpeg_info->video[ v_idx ].frate = frame_rates[ frate ];
+
+    offset += 1; // after picture rate
+
+    // 18 following bytes are the bitrate /400
+
+    //read first 16 bytes
+    brate = GetSize( offset );
+    // scale
+    brate <<= 2;
+    byte lasttwo = GetByte( offset + 2 );
+    lasttwo >>= 6;
+    brate |= lasttwo;
+
+    mpeg_info->video[ v_idx ].bitrate = 400 * brate;
+
+    byte mark;
+    while ( true ) {
+        offset = FindNextMarker( offset, &mark );
+        if ( mark == MPEG_GOP_CODE )
+            break;
+        switch ( GetByte( offset + 3 ) ) {
+            case MPEG_EXT_CODE :
+                // Extension
+                offset += 4;
+                switch ( GetByte( offset ) >> 4 ) {
+                    case 1:
+                        //SequenceExt
+                        if ( GetByte( offset + 1 ) & 0x08 )
+                            mpeg_info->video[ v_idx ].progressive = true;
+                        mpeg_info->video[ v_idx ].chroma_format = ( GetByte( offset + 1 ) & 0x06 ) >> 1;
+                        break;
+                    case 2:
+                        // SequenceDisplayExt
+                        mpeg_info->video[ v_idx ].video_format = ( GetByte( offset ) & 0x0E ) >> 1;
+                        break;
+                }
+
+                break;
+            case MPEG_USER_CODE :
+                // UserData
+                break;
+        }
+        offset++;
+    }
+
+    mpeg_info->video[ v_idx ].seen = true;
+}
+
+double K3bMpegInfo::ReadTS( llong offset )
+{
+    byte highbit;
+    unsigned long low4Bytes;
+    double TS;
+
+    highbit = ( GetByte( offset ) >> 3 ) & 0x01;
+
+    low4Bytes = ( ( GetByte( offset ) >> 1 ) & 0x03 ) << 30;
+    low4Bytes |= GetByte( offset + 1 ) << 22;
+    low4Bytes |= ( GetByte( offset + 2 ) >> 1 ) << 15;
+    low4Bytes |= GetByte( offset + 3 ) << 7;
+    low4Bytes |= GetByte( offset + 4 ) >> 1;
+
+
+    TS = ( double ) ( highbit * FLOAT_0x10000 * FLOAT_0x10000 );
+    TS += ( double ) ( low4Bytes );
+    TS /= ( double ) ( STD_SYSTEM_CLOCK_FREQ );
+
+    return TS;
+}
+
+double K3bMpegInfo::ReadTSMpeg2( llong offset )
+{
+    byte highbit;
+    unsigned long low4Bytes;
+    unsigned long sys_clock_ref;
+    double TS;
+
+    highbit = ( GetByte( offset ) & 0x20 ) >> 5;
+
+    low4Bytes = ( ( GetByte( offset ) & 0x18 ) >> 3 ) << 30;
+    low4Bytes |= ( GetByte( offset ) & 0x03 ) << 28;
+    low4Bytes |= GetByte( offset + 1 ) << 20;
+    low4Bytes |= ( GetByte( offset + 2 ) & 0xF8 ) << 12;
+    low4Bytes |= ( GetByte( offset + 2 ) & 0x03 ) << 13;
+    low4Bytes |= GetByte( offset + 3 ) << 5;
+    low4Bytes |= ( GetByte( offset + 4 ) ) >> 3;
+
+    sys_clock_ref = ( GetByte( offset + 4 ) & 0x3 ) << 7;
+    sys_clock_ref |= ( GetByte( offset + 5 ) >> 1 );
+
+    TS = ( double ) ( highbit * FLOAT_0x10000 * FLOAT_0x10000 );
+    TS += ( double ) ( low4Bytes );
+    if ( sys_clock_ref == 0 )
+        TS /= ( double ) ( STD_SYSTEM_CLOCK_FREQ );
+    else {
+        TS /= ( double ) ( 27000000 / sys_clock_ref );
+    }
+
+    return TS;
+}