optimize, remove an if statement from loop

1 files changed, 60 insertions, 56 deletions

diff --git a/core/applets/vmemo/vmemo.cpp b/core/applets/vmemo/vmemo.cpp
index 1ead4dd..835f63a 100644
--- a/core/applets/vmemo/vmemo.cpp
+++ b/core/applets/vmemo/vmemo.cpp
@@ -1,652 +1,656 @@
 /************************************************************************************
  **
  ** This file may be distributed and/or modified under the terms of the
  ** GNU General Public License version 2 as published by the Free Software
  ** Foundation and appearing in the file LICENSE.GPL included in the
  ** packaging of this file.
  **
  ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  **
  ************************************************************************************/
 // copyright 2002 Jeremy Cowgar <jc@cowgar.com>
 // copyright 2002 and 2003  L.J.Potter <ljp@llornkcor.com>
 
 /* OPIE */
 #include <opie2/odebug.h>
 using namespace Opie::Core;
 
 extern "C" {
 #include "adpcm.h"
 }
 
 #include <unistd.h>
 #include <stdio.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
 #include <linux/soundcard.h>
 
 #include <errno.h>
 
 typedef struct _waveheader {
   u_long  main_chunk; /* 'RIFF'  */
   u_long  length;     /* filelen */
   u_long  chunk_type; /* 'WAVE'  */
   u_long  sub_chunk;  /* 'fmt '                                               */
   u_long  sc_len;     /* length of sub_chunk, =16
                          (chunckSize) format len */
   u_short format;     /* should be 1 for PCM-code        (formatTag)          */
 
   u_short modus;      /* 1 Mono, 2 Stereo                (channels)           */
   u_long  sample_fq;  /* samples per second              (samplesPerSecond)   */
   u_long  byte_p_sec; /* avg bytes per second            (avgBytePerSecond)   */
   u_short byte_p_spl; /* samplesize; 1 or 2 bytes        (blockAlign)         */
   u_short bit_p_spl;  /* 8, 12 or 16 bit                 (bitsPerSample)      */
 
   u_long  data_chunk; /* 'data'      */
 
   u_long  data_length;/* samplecount */
 } WaveHeader;
 
 #define RIFF        0x46464952
 #define WAVE        0x45564157
 #define FMT         0x20746D66
 #define DATA        0x61746164
 #define PCM_CODE    1
 #define WAVE_MONO   1
 #define WAVE_STEREO 2
 
 struct adpcm_state encoder_state;
 //struct adpcm_state decoder_state;
 
 #define WAVE_FORMAT_DVI_ADPCM (0x0011)
 #define WAVE_FORMAT_PCM (0x0001)
 
 
 #include "vmemo.h"
 
 #include <opie2/otaskbarapplet.h>
 #include <qpe/qpeapplication.h>
 #include <qpe/config.h>
 
 #include <qpainter.h>
 #include <qmessagebox.h>
 
 int seq = 0;
 
 /* XPM */
 static char * vmemo_xpm[] = {
   "16 16 102 2",
   "   c None",
   ".  c #60636A",
   "+  c #6E6E72",
   "@  c #68696E",
   "#  c #4D525C",
   "$  c #6B6C70",
   "%  c #E3E3E8",
   "&  c #EEEEF2",
   "*  c #EAEAEF",
   "=  c #CACAD0",
   "-  c #474A51",
   ";  c #171819",
   ">  c #9B9B9F",
   ",  c #EBEBF0",
   "'  c #F4F4F7",
   ")  c #F1F1F5",
   "!  c #DEDEE4",
   "~  c #57575C",
   "{  c #010101",
   "]  c #A2A2A6",
   "^  c #747477",
   "/  c #B5B5B8",
   "(  c #AEAEB2",
   "_  c #69696D",
   ":  c #525256",
   "<  c #181C24",
   "[  c #97979B",
   "}  c #A7A7AC",
   "|  c #B0B0B4",
   "1  c #C8C8D1",
   "2  c #75757B",
   "3  c #46464A",
   "4  c #494A4F",
   "5  c #323234",
   "6  c #909095",
   "7  c #39393B",
   "8  c #757578",
   "9  c #87878E",
   "0  c #222224",
   "a  c #414144",
   "b  c #6A6A6E",
   "c  c #020C16",
   "d  c #6B6B6F",
   "e  c #68686D",
   "f  c #5B5B60",
   "g  c #8A8A8F",
   "h  c #6B6B6E",
   "i  c #ADADB2",
   "j  c #828289",
   "k  c #3E3E41",
   "l  c #CFCFD7",
   "m  c #4C4C50",
   "n  c #000000",
   "o  c #66666A",
   "p  c #505054",
   "q  c #838388",
   "r  c #A1A1A7",
   "s  c #A9A9AE",
   "t  c #A8A8B0",
   "u  c #5E5E63",
   "v  c #3A3A3E",
   "w  c #BDBDC6",
   "x  c #59595E",
   "y  c #76767C",
   "z  c #373738",
   "A  c #717174",
   "B  c #727278",
   "C  c #1C1C1E",
   "D  c #3C3C3F",
   "E  c #ADADB6",
   "F  c #54555A",
   "G  c #8B8C94",
   "H  c #5A5A5F",
   "I  c #BBBBC3",
   "J  c #C4C4CB",
   "K  c #909098",
   "L  c #737379",
   "M  c #343437",
   "N  c #8F8F98",
   "O  c #000407",
   "P  c #2D3137",
   "Q  c #B0B1BC",
   "R  c #3B3C40",
   "S  c #6E6E74",
   "T  c #95959C",
   "U  c #74747A",
   "V  c #1D1D1E",
   "W  c #91929A",
   "X  c #42444A",
   "Y  c #22282E",
   "Z  c #B0B2BC",
   "`  c #898A90",
   " . c #65656A",
   ".. c #999AA2",
   "+. c #52535A",
   "@. c #151B21",
   "#. c #515257",
   "$. c #B5B5BE",
   "%. c #616167",
   "&. c #1A1D22",
   "*. c #000713",
   "=. c #1F1F21",
   "                                ",
   "            . + @ #             ",
   "          $ % & * = -           ",
   "        ; > , ' ) ! ~           ",
   "        { ] ^ / ( _ :           ",
   "        < [ } | 1 2 3           ",
   "      4 5 6 7 8 9 0 a b c       ",
   "    d e f g h i j 3 k l m n     ",
   "      o p q r s t u v w n       ",
   "      o x y z A B C D E n       ",
   "      F G H I J K L M N O       ",
   "      P Q R S T U V W X         ",
   "        Y Z ` b  ...+.          ",
   "          @.#.$.%.&.            ",
   "            *.B =.              ",
   "      n n n n n n n n n         "};
 
 
 using namespace Opie::Ui;
 VMemo::VMemo( QWidget *parent, const char *_name )
   : QWidget( parent, _name ) {
   setFixedHeight( 18 );
   setFixedWidth( 14 );
 
   t_timer = new QTimer( this );
   connect( t_timer, SIGNAL( timeout() ), SLOT( timerBreak() ) );
 
     Config vmCfg("Vmemo");
     vmCfg.setGroup("Defaults");
     int toggleKey = setToggleButton(vmCfg.readNumEntry("toggleKey", -1));
     useADPCM = vmCfg.readBoolEntry("use_ADPCM", 0);
 
     odebug << "toggleKey " << toggleKey << "" << oendl;
 
 //     if ( QFile::exists ( "/dev/sharp_buz" ) || QFile::exists ( "/dev/sharp_led" ))
 //          systemZaurus=TRUE;
 //     else
       systemZaurus = FALSE;
 
     myChannel = new QCopChannel( "QPE/VMemo", this );
     connect( myChannel, SIGNAL(received(const QCString&,const QByteArray&)),
              this, SLOT(receive(const QCString&,const QByteArray&)) );
 
     if( toggleKey != -1 ) {
 				qDebug("Register key %d", toggleKey);
       QCopEnvelope e("QPE/Launcher", "keyRegister(int,QCString,QCString)");
       //           e << 4096; // Key_Escape
       //          e << Key_F5; //4148
       e << toggleKey;
       e << QString("QPE/VMemo");
       e << QString("toggleRecord()");
     }
     if(toggleKey == 1)
         usingIcon = TRUE;
     else
         usingIcon = FALSE;
 //     if( vmCfg.readNumEntry("hideIcon",0) == 1)
 //       hide();
     recording = FALSE;
     // }
 }
 
 VMemo::~VMemo() {
 }
 
 int VMemo::position()
 {
     return 6;
 }
 
 void VMemo::receive( const QCString &msg, const QByteArray &data ) {
   odebug << "Vmemo receive" << oendl;
   QDataStream stream( data, IO_ReadOnly );
 
   if (msg == "toggleRecord()")  {
       if (recording) {
           fromToggle = TRUE;
           stopRecording();
       }  else {
           fromToggle = TRUE;
           startRecording();
       }
   }
 }
 
 void VMemo::paintEvent( QPaintEvent* ) {
   QPainter p(this);
   p.drawPixmap( 0, 1,( const char** )  vmemo_xpm );
 }
 
-void VMemo::mousePressEvent( QMouseEvent * me) {
+void VMemo::mousePressEvent( QMouseEvent * /*me*/) {
   /*  No mousePress/mouseRelease recording on the iPAQ. The REC button on the iPAQ calls these functions
          mousePressEvent and mouseReleaseEvent with a NULL parameter.  */
 
 //  if (!systemZaurus && me != NULL)
 //        return;
 //    }
 
   if(!recording)
        startRecording();
    else
        stopRecording();
 }
 
 void VMemo::mouseReleaseEvent( QMouseEvent * ) {
 }
 
 bool VMemo::startRecording() {
   Config config( "Vmemo" );
   config.setGroup( "System" );
 
   useAlerts = config.readBoolEntry("Alert",1);
   if(useAlerts) {
 
     msgLabel = new QLabel( 0, "alertLabel" );
     msgLabel->setText("<B><P><font size=+2>VMemo-Recording</font></B>");
     msgLabel->show();
   }
 
   odebug << "Start recording engines" << oendl;
   recording = TRUE;
 
   if (openDSP() == -1)  {
     recording = FALSE;
     return FALSE;
   }
 
   config.setGroup("Defaults");
 
   date = TimeString::dateString( QDateTime::currentDateTime(),false,true);
   date.replace(QRegExp("'"),"");
   date.replace(QRegExp(" "),"_");
   date.replace(QRegExp(":"),".");
   date.replace(QRegExp(","),"");
 
   QString fName;
   config.setGroup( "System" );
   fName = QPEApplication::documentDir() ;
   fileName = config.readEntry("RecLocation", fName);
 
   int s;
   s=fileName.find(':');
   if(s)
     fileName=fileName.right(fileName.length()-s-2);
   odebug << "pathname will be "+fileName << oendl;
 
   if( fileName.left(1).find('/') == -1)
     fileName="/"+fileName;
   if( fileName.right(1).find('/') == -1)
     fileName+="/";
   fName = "vm_"+ date + ".wav";
 
   fileName+=fName;
   odebug << "filename is " + fileName << oendl;
 // open tmp file here
   char *pointer;
   pointer=tmpnam(NULL);
   odebug << "Opening tmp file " << pointer << "" << oendl;
 
   if(openWAV(pointer ) == -1)  {
 
     QString err("Could not open the temp file\n");
     err += fileName;
     QMessageBox::critical(0, "vmemo", err, "Abort");
     ::close(dsp);
     return FALSE;
   }
   if( record() ) {
 
   QString cmd;
   if( fileName.find(".wav",0,TRUE) == -1)
       fileName += ".wav";
 
   cmd.sprintf("mv %s "+fileName, pointer);
 // move tmp file to regular file here
 
   system(cmd.latin1());
 
   QArray<int> cats(1);
   cats[0] = config.readNumEntry("Category", 0);
 
   QString dlName("vm_");
   dlName += date;
   DocLnk l;
   l.setFile(fileName);
   l.setName(dlName);
   l.setType("audio/x-wav");
   l.setCategories(cats);
   l.writeLink();
   return TRUE;
   } else
       return FALSE;
 
 }
 
 void VMemo::stopRecording() {
     show();
     odebug << "Stopped recording" << oendl;
     recording = FALSE;
     if(useAlerts) {
         msgLabel->close();
         msgLabel=0;
         delete msgLabel;
     }
     t_timer->stop();
     Config cfg("Vmemo");
     cfg.setGroup("Defaults");
 //     if( cfg.readNumEntry("hideIcon",0) == 1 )
 //         hide();
 }
 
 int VMemo::openDSP() {
   Config cfg("Vmemo");
   cfg.setGroup("Record");
 
   speed = cfg.readNumEntry("SampleRate", 22050);
   channels = cfg.readNumEntry("Stereo", 1) ? 2 : 1; // 1 = stereo(2), 0 = mono(1)
   if (cfg.readNumEntry("SixteenBit", 1)==1)  {
     format = AFMT_S16_LE;
     resolution = 16;
   } else {
     format = AFMT_U8;
     resolution = 8;
   }
 
   odebug << "samplerate: " << speed << ", channels " << channels << ", resolution " << resolution << "" << oendl;
 
   if(systemZaurus) {
     dsp = open("/dev/dsp1", O_RDONLY); //Zaurus needs /dev/dsp1
     channels=1; //zaurus has one input channel
   }  else {
     dsp = open("/dev/dsp", O_RDONLY);
   }
 
   if(dsp == -1)  {
       msgLabel->close();
       msgLabel=0;
       delete msgLabel;
 
       perror("open(\"/dev/dsp\")");
       errorMsg="open(\"/dev/dsp\")\n "+(QString)strerror(errno);
     QMessageBox::critical(0, "vmemo", errorMsg, "Abort");
     return -1;
   }
 
   if(ioctl(dsp, SNDCTL_DSP_SETFMT , &format)==-1)  {
     perror("ioctl(\"SNDCTL_DSP_SETFMT\")");
     return -1;
   }
   if(ioctl(dsp, SNDCTL_DSP_CHANNELS , &channels)==-1)  {
     perror("ioctl(\"SNDCTL_DSP_CHANNELS\")");
     return -1;
   }
   if(ioctl(dsp, SNDCTL_DSP_SPEED , &speed)==-1)  {
     perror("ioctl(\"SNDCTL_DSP_SPEED\")");
     return -1;
   }
   if(ioctl(dsp, SOUND_PCM_READ_RATE , &rate)==-1)  {
     perror("ioctl(\"SOUND_PCM_READ_RATE\")");
     return -1;
   }
 
   QCopEnvelope( "QPE/System", "volumeChange(bool)" ) << FALSE; //mute
 
   return 1;
 }
 
 int VMemo::openWAV(const char *filename) {
   track.setName(filename);
   if(!track.open(IO_WriteOnly|IO_Truncate|IO_Raw)) {
     errorMsg=filename;
     return -1;
   }
 
   wav=track.handle();
     Config vmCfg("Vmemo");
     vmCfg.setGroup("Defaults");
   useADPCM = vmCfg.readBoolEntry("use_ADPCM", 0);
 
   WaveHeader wh;
 
   wh.main_chunk = RIFF;
   wh.length=0;
   wh.chunk_type = WAVE;
   wh.sub_chunk  = FMT;
   wh.sc_len     = 16;
   if(useADPCM)
       wh.format     = WAVE_FORMAT_DVI_ADPCM;//PCM_CODE;
   else
       wh.format     = PCM_CODE;
   wh.modus      = channels;
   wh.sample_fq  = speed;
   wh.byte_p_sec = speed * channels *  resolution/8;
   wh.byte_p_spl = channels * (resolution / 8);
   wh.bit_p_spl  = resolution;
   wh.data_chunk = DATA;
   wh.data_length= 0;
   //    qDebug("Write header channels %d, speed %d, b/s %d, blockalign %d, bitrate %d"
   //           , wh.modus, wh.sample_fq, wh.byte_p_sec, wh.byte_p_spl, wh.bit_p_spl );
   write (wav, &wh, sizeof(WaveHeader));
 
   return 1;
 }
 
 bool VMemo::record() {
 		length = 0;
-		int result, value;
+    int bytesWritten = 0;
+		int result = 0;
+		int value = 0;
 		QString msg;
 		msg.sprintf("Recording format %d", format);
 		odebug << msg << oendl;
 		Config config("Vmemo");
 		config.setGroup("Record");
-		int sRate=config.readNumEntry("SizeLimit", 30);
+		int sRate = config.readNumEntry("SizeLimit", 30);
 		if(sRate > 0)
 				t_timer->start( sRate * 1000+1000, TRUE);
 
-//    if(systemZaurus) {
-//    } else { // 16 bit only capabilities
-
     msg.sprintf("Recording format other");
     odebug << msg << oendl;
 
+    config.setGroup("Defaults");
+    useADPCM = config.readBoolEntry("use_ADPCM", 0);
 
-    int bytesWritten = 0;
-
-    Config vmCfg("Vmemo");
-    vmCfg.setGroup("Defaults");
-    useADPCM = vmCfg.readBoolEntry("use_ADPCM", 0);
-
-	int bufsize = vmCfg.readNumEntry("BufferSize",1024);
-	signed short sound[bufsize], monoBuffer[bufsize];
+		int bufsize = config.readNumEntry("BufferSize",1024);
+		unsigned short sound[bufsize]; //, monoBuffer[bufsize];
     char abuf[bufsize / 2];
     short sbuf[bufsize];
 
-    while(recording)  {
-
-        if(useADPCM)
-            result = ::read(dsp, sbuf, bufsize); // 8192
-        else
-            result = ::read(dsp, sound, bufsize); // 8192
-        if( result <= 0) {
-						perror("recording error ");
-//          odebug << currentFileName << oendl;
-						QMessageBox::message(tr("Note"),tr("error recording"));
-						recording = FALSE;
-						break;
-						return FALSE;
-        }
-
-        if(useADPCM) {
-            adpcm_coder( sbuf, abuf, result/2, &encoder_state);
-            bytesWritten = ::write(wav, abuf, result/4);
-
-        } else {
-//             for (int i = 0; i < result; i++) { //since Z is mono do normally
-//                 monoBuffer[i] = sound[i];
-//             }
-
-            length += write(wav, sound, result);
-        }
-        length += bytesWritten;
-
-				if(length<0) {
-						recording = false;
-						perror("dev/dsp's is a lookin' messy");
-						QMessageBox::message("Vmemo","Error writing to file\n"+ fileName);
-						break;
-						return FALSE;
+		if(useADPCM) {
+				while(recording) {
+						result = ::read(dsp, sbuf, bufsize); // adpcm read
+						if( result <= 0) {
+								perror("recording error ");
+								QMessageBox::message(tr("Note"),tr("error recording"));
+								recording = FALSE;
+								break;
+								return FALSE;
+						}
+						adpcm_coder( sbuf, abuf, result/2, &encoder_state);
+						bytesWritten = ::write(wav, abuf, result/4); // adpcm write
+						length += bytesWritten;
+
+						if(length < 0) {
+								recording = false;
+								perror("dev/dsp's is a lookin' messy");
+								QMessageBox::message("Vmemo","Error writing to file\n"+ fileName);
+								break;
+								return FALSE;
+						}
+							//       printf("%d\r", length);
+							//       fflush(stdout);
+						qApp->processEvents();
 				}
-					//       odebug << "" << length << "\r" << oendl;
-					//       fflush(stdout);
-				qApp->processEvents();
-    }
+		} else {
+				while(recording) {
+						result = ::read(dsp, sound, bufsize); // read
+						if( result <= 0) {
+								perror("recording error ");
+								QMessageBox::message(tr("Note"),tr("error recording"));
+								recording = FALSE;
+								break;
+								return FALSE;
+
+								bytesWritten = ::write(wav, sound, result); // write
+								length += bytesWritten;
+
+								if(length < 0) {
+										recording = false;
+										perror("dev/dsp's is a lookin' messy");
+										QMessageBox::message("Vmemo","Error writing to file\n"+ fileName);
+										break;
+										return FALSE;
+								}
+									//       printf("%d\r", length);
+									//       fflush(stdout);
+								qApp->processEvents();
+						}
+				}
+		}
 			//  qDebug("file has length of %d lasting %d seconds",
 			//         length, (( length / speed) / channels) / 2 );
-			//  }
-
-			//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<//
 
 		value = length + 36;
 
 		lseek(wav, 4, SEEK_SET);
 		write(wav, &value, 4);
 		lseek(wav, 40, SEEK_SET);
 
 		write(wav, &length, 4);
 
 		track.close();
 		odebug << "Track closed" << oendl;
 
 		if( ioctl( dsp, SNDCTL_DSP_RESET,0) == -1)
 				perror("ioctl(\"SNDCTL_DSP_RESET\")");
 
 		::close(dsp);
 
 		Config cfgO("OpieRec");
 		cfgO.setGroup("Sounds");
 
 		int nFiles = cfgO.readNumEntry( "NumberofFiles",0);
 
 		QString currentFileName = fileName;
 		QString currentFile = "vm_"+ date;
 
-		float numberOfRecordedSeconds=(float) length / (float)speed * (float)2;
+		float numberOfRecordedSeconds = (float) length / (float)speed * (float)2;
 
 		cfgO.writeEntry( "NumberofFiles", nFiles + 1);
 		cfgO.writeEntry( QString::number( nFiles + 1), currentFile);
 		cfgO.writeEntry( currentFile, currentFileName);
 
 		QString time;
 		time.sprintf("%.2f", numberOfRecordedSeconds);
 		cfgO.writeEntry( currentFileName, time );
       //      odebug << "writing config numberOfRecordedSeconds "+time << oendl;
 
 		cfgO.write();
 
 		odebug << "done recording "+fileName << oendl;
 
 		Config cfg("qpe");
 		cfg.setGroup("Volume");
 		QString foo = cfg.readEntry("Mute","TRUE");
 		if(foo.find("TRUE",0,TRUE) != -1)
 				QCopEnvelope( "QPE/System", "volumeChange(bool)" ) << TRUE; //mute
 		return TRUE;
 }
 
 int VMemo::setToggleButton(int tog) {
 
   for( int i=0; i < 10;i++) {
     switch (tog) {
     case 0:
       return -1;
       break;
     case 1:
       return 0;
       break;
     case 2:
         return Key_F24; //was Escape
       break;
     case 3:
       return Key_Space;
       break;
     case 4:
       return Key_F12;
       break;
     case 5:
       return Key_F9;
       break;
     case 6:
       return Key_F10;
       break;
     case 7:
       return Key_F11;
       break;
     case 8:
       return Key_F13;
       break;
     };
   }
   return -1;
 }
 
 void VMemo::timerBreak() {
   //stop
     stopRecording();
   QMessageBox::message("Vmemo","Vmemo recording has ended");
 }
 
 
 EXPORT_OPIE_APPLET_v1( VMemo )