Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 268 insertions, 0 deletions

diff --git a/mpeglib/lib/splay/mpegAudioHeader.cpp b/mpeglib/lib/splay/mpegAudioHeader.cpp
new file mode 100644
index 00000000..7e34b212
--- /dev/null
+++ b/mpeglib/lib/splay/mpegAudioHeader.cpp
@@ -0,0 +1,268 @@
+/*
+  stores information after we found a header.
+  Copyright (C) 2000  Martin Vogt
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation.
+
+  For more information look at the file COPYRIGHT in this package
+
+ */
+
+
+
+#include "mpegAudioHeader.h"
+
+#define DEBUG_HEADER(x)
+//#define DEBUG_HEADER(x)  x
+
+
+#include <iostream>
+
+using namespace std;
+
+static const int frequencies[3][3]= {
+    {44100,48000,32000},  // MPEG 1
+    {22050,24000,16000},  // MPEG 2
+    {11025,12000,8000}    // MPEG 2.5
+};
+
+static int translate[3][2][16] = { { { 2,0,0,2,2,2,3,3,3,3,3,3,3,3,3,2 } ,
+				     { 2,0,0,0,0,0,0,2,2,2,3,3,3,3,3,2 } } ,
+				   { { 2,0,0,2,2,2,2,2,2,2,2,2,2,2,2,2 } ,
+				     { 2,0,0,0,0,0,0,2,2,2,2,2,2,2,2,2 } } ,
+				   { { 2,1,1,2,2,2,3,3,3,3,3,3,3,3,3,2 } ,
+				     { 2,1,1,1,1,1,1,2,2,2,3,3,3,3,3,2 } } };
+
+
+static int sblims[5] = { 8 , 12 , 27, 30 , 30 };
+
+
+static const int bitrate[2][3][15]= {
+  // MPEG 1
+  {{0,32,64,96,128,160,192,224,256,288,320,352,384,416,448},
+   {0,32,48,56,64,80,96,112,128,160,192,224,256,320,384},
+   {0,32,40,48,56,64,80,96,112,128,160,192,224,256,320}},
+
+  // MPEG 2
+  {{0,32,48,56,64,80,96,112,128,144,160,176,192,224,256},
+   {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160},
+   {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160}}
+};
+
+
+MpegAudioHeader::MpegAudioHeader() {
+  
+}
+
+
+MpegAudioHeader::~MpegAudioHeader() {
+}
+
+
+int MpegAudioHeader::getChannelbitrate() {
+  cout << "getChannelbitrate not implemented"<<endl;
+  return 0;
+}
+
+int MpegAudioHeader::parseHeader(unsigned char* buf){
+
+  int c;
+  int mpeg25=false;
+  
+
+  // Analyzing
+  header[0]=buf[0];
+  header[1]=buf[1];
+  header[2]=buf[2];
+  header[3]=buf[3];
+
+  c=buf[1];
+  lmpeg25=false;
+  if ( (c&0xf0) == 0xe0) {
+    lmpeg25=true;
+  } 
+
+  c&=0xf;
+  protection=c&1;
+  layer=4-((c>>1)&3);
+  // we catch the layer==4 error later, for now go on with parsing
+  version=(int)(((c>>3)&1)^1);
+  if ((version==0) && lmpeg25) {
+    DEBUG_HEADER(cout << "wrong lsf/mpeg25 combination"<<endl;)
+    return false;
+  }
+  c=buf[2];
+
+  c=((c))>>1;
+  padding=(c&1);
+  c>>=1;
+  frequency=(int)(c&3);
+  c>>=2;
+  bitrateindex=(int)c;
+  if(bitrateindex>=15) {
+    DEBUG_HEADER(cout << "bitrateindex error"<<endl;)
+    return false;
+  }
+  c=buf[3];
+
+  c=((unsigned int)(c))>>4;
+  extendedmode=c&3;
+  mode=(int)(c>>2);
+
+
+  // Making information
+  inputstereo= (mode==_MODE_SINGLE)?0:1;
+
+  //
+  // frequency can be 0,1 or 2 but the mask above allows 3 as well
+  // check now.
+  if (frequency > 2) {
+    DEBUG_HEADER(cout << "frequency value out of range"<<endl;)
+    return false;
+  }
+
+  //
+  // does not belong here should be in the layer specific parts. [START]
+  //
+
+  switch(layer) {
+  case 3: 
+    subbandnumber=0;
+    stereobound=0;
+    tableindex=0;
+    break;
+  case 2:
+    tableindex    = translate[frequency][inputstereo][bitrateindex];
+    subbandnumber = sblims[tableindex];
+    stereobound   = subbandnumber;
+    /*
+      Now merge the tableindex, for the bitalloclengthtable
+    */
+    tableindex=tableindex>>1;
+    if(mode==_MODE_SINGLE)stereobound=0;
+    if(mode==_MODE_JOINT)stereobound=(extendedmode+1)<<2;
+
+    break;
+  case 1:
+    subbandnumber=MAXSUBBAND;
+    stereobound=subbandnumber;
+    tableindex=0;
+    if(mode==_MODE_SINGLE)stereobound=0;
+    if(mode==_MODE_JOINT)stereobound=(extendedmode+1)<<2;
+    break;
+  default:
+    DEBUG_HEADER(cout <<"unknown layer"<<endl;)
+    return false;
+  }
+
+  //
+  // does not belong here should be in the layer specific parts. [END]
+  //
+  frequencyHz=frequencies[version+lmpeg25][frequency];
+  // framesize & slots
+  if(layer==1) {
+    if (frequencyHz <= 0) {
+      return false;
+    }
+    framesize=(12000*bitrate[version][0][bitrateindex])/frequencyHz;
+  
+    if(frequency==_FREQUENCY_44100 && padding)framesize++;
+    framesize<<=2;
+  } else  {
+    int freq=frequencyHz<<version;
+    if (freq <= 0) {
+      return false;
+    }
+    framesize=(144000*bitrate[version][layer-1][bitrateindex])/freq;
+ 
+    if(padding)framesize++;
+    if(layer==3) {
+      if(version)
+        layer3slots=framesize-((mode==_MODE_SINGLE)?9:17)
+	  -(protection?0:2)
+	  -4;
+      else
+        layer3slots=framesize-((mode==_MODE_SINGLE)?17:32)
+                             -(protection?0:2)
+                             -4;
+    }
+  }
+  if (framesize <= 0) {
+    DEBUG_HEADER(cout << "framesize negative"<<endl;)
+    return false;
+  }
+  return true;
+
+}
+  
+
+int MpegAudioHeader::getpcmperframe() {
+  int s;
+  
+  s=32;
+  if(layer==3) {
+    s*=18;
+    if(version==0)s*=2;
+  }
+  else {
+    s*=SCALEBLOCK;
+    if(layer==2)s*=3;
+  }
+
+  return s;
+}
+
+
+void MpegAudioHeader::copyTo(MpegAudioHeader* dest) {
+  dest->protection=protection;
+  dest->layer=layer;
+  dest->version=version;
+  dest->padding=padding;
+  dest->frequency=frequency;
+  dest->frequencyHz=frequencyHz;
+  dest->bitrateindex=bitrateindex;
+  dest->extendedmode=extendedmode;
+  dest->mode=mode;
+  dest->inputstereo=inputstereo;
+  dest->channelbitrate=channelbitrate;
+  dest->tableindex=tableindex;
+  dest->subbandnumber=subbandnumber;
+  dest->stereobound=stereobound;
+  dest->framesize=framesize;
+  dest->layer3slots=layer3slots;
+  dest->lmpeg25=lmpeg25;
+}
+
+
+void MpegAudioHeader::print(const char* name) {
+  cout << "MpegAudioHeader [START]:"<<name<<endl;
+  printf("header:%1x%1x%1x%1x\n",header[0],header[1],header[2],header[3]);
+  cout << "getProtection:"<<getProtection()<<endl;
+  cout << "getLayer:"<<getLayer()<<endl;
+  cout << "getVersion:"<<getVersion()<<endl;
+  cout << "getPadding:"<<getPadding()<<endl;
+  cout << "getFrequency:"<<getFrequency()<<endl;
+  cout << "getFrequencyHz:"<<getFrequencyHz()<<endl;
+  cout << "getBitrateindex:"<<getBitrateindex()<<endl;
+  cout << "getExtendedmode:"<<getExtendedmode()<<endl;
+  cout << "getMode():"<<getMode()<<endl;
+  cout << "getInputstereo:"<<getInputstereo()<<endl;
+  cout << "getChannelbitrate:"<<getChannelbitrate()<<endl;
+  cout << "getTableindex:"<<getTableindex()<<endl;
+  cout << "getSubbandnumber:"<<getSubbandnumber()<<endl;
+  cout << "getStereobound:"<<getStereobound()<<endl;
+  cout << "getFramesize:"<<getFramesize()<<endl;
+  cout << "getLayer3slots:"<<getLayer3slots()<<endl;
+  cout << "getpcmperframe:"<<getpcmperframe()<<endl;
+  cout << "MpegAudioHeader [END]:"<<name<<endl;
+ 
+}
+
+
+
+
+
+
+