5 files changed, 324 insertions, 87 deletions

diff --git a/core/applets/vmemo/adpcm.c b/core/applets/vmemo/adpcm.c
new file mode 100644
index 0000000..c4dfa50
--- a/dev/null
+++ b/core/applets/vmemo/adpcm.c
@@ -0,0 +1,252 @@
+/***********************************************************
+Copyright 1992 by Stichting Mathematisch Centrum, Amsterdam, The
+Netherlands.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, 
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in 
+supporting documentation, and that the names of Stichting Mathematisch
+Centrum or CWI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior permission.
+
+STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
+THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
+FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+******************************************************************/
+
+/*
+** Intel/DVI ADPCM coder/decoder.
+**
+** The algorithm for this coder was taken from the IMA Compatability Project
+** proceedings, Vol 2, Number 2; May 1992.
+**
+** Version 1.2, 18-Dec-92.
+**
+** Change log:
+** - Fixed a stupid bug, where the delta was computed as
+**   stepsize*code/4 in stead of stepsize*(code+0.5)/4.
+** - There was an off-by-one error causing it to pick
+**   an incorrect delta once in a blue moon.
+** - The NODIVMUL define has been removed. Computations are now always done
+**   using shifts, adds and subtracts. It turned out that, because the standard
+**   is defined using shift/add/subtract, you needed bits of fixup code
+**   (because the div/mul simulation using shift/add/sub made some rounding
+**   errors that real div/mul don't make) and all together the resultant code
+**   ran slower than just using the shifts all the time.
+** - Changed some of the variable names to be more meaningful.
+*/
+
+#include "adpcm.h"
+#include <stdio.h> /*DBG*/
+
+#ifndef __STDC__
+#define signed
+#endif
+
+/* Intel ADPCM step variation table */
+static int indexTable[16] = {
+    -1, -1, -1, -1, 2, 4, 6, 8,
+    -1, -1, -1, -1, 2, 4, 6, 8,
+};
+
+static int stepsizeTable[89] = {
+    7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
+    19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
+    50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
+    130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
+    337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
+    876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
+    2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
+    5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
+    15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
+};
+    
+void
+adpcm_coder(indata, outdata, len, state)
+    short indata[];
+    char outdata[];
+    int len;
+    struct adpcm_state *state;
+{
+            short *inp;                 /* Input buffer pointer */
+            signed char *outp;  /* output buffer pointer */
+            int val;            /* Current input sample value */
+            int sign;           /* Current adpcm sign bit */
+            int delta;          /* Current adpcm output value */
+            int diff;           /* Difference between val and valprev */
+            int step;           /* Stepsize */
+            int valpred;        /* Predicted output value */
+            int vpdiff;                 /* Current change to valpred */
+            int index;          /* Current step change index */
+            int outputbuffer;   /* place to keep previous 4-bit value */
+            int bufferstep;     /* toggle between outputbuffer/output */
+
+    outp = (signed char *)outdata;
+    inp = indata;
+
+    valpred = state->valprev;
+    index = state->index;
+    step = stepsizeTable[index];
+    
+    bufferstep = 1;
+
+    for ( ; len > 0 ; len-- ) {
+        val = *inp++;
+
+        /* Step 1 - compute difference with previous value */
+        diff = val - valpred;
+        sign = (diff < 0) ? 8 : 0;
+        if ( sign ) diff = (-diff);
+
+        /* Step 2 - Divide and clamp */
+        /* Note:
+        ** This code *approximately* computes:
+        **    delta = diff*4/step;
+        **    vpdiff = (delta+0.5)*step/4;
+        ** but in shift step bits are dropped. The net result of this is
+        ** that even if you have fast mul/div hardware you cannot put it to
+        ** good use since the fixup would be too expensive.
+        */
+        delta = 0;
+        vpdiff = (step >> 3);
+        
+        if ( diff >= step ) {
+            delta = 4;
+            diff -= step;
+            vpdiff += step;
+        }
+        step >>= 1;
+        if ( diff >= step  ) {
+            delta |= 2;
+            diff -= step;
+            vpdiff += step;
+        }
+        step >>= 1;
+        if ( diff >= step ) {
+            delta |= 1;
+            vpdiff += step;
+        }
+
+        /* Step 3 - Update previous value */
+        if ( sign )
+          valpred -= vpdiff;
+        else
+          valpred += vpdiff;
+
+        /* Step 4 - Clamp previous value to 16 bits */
+        if ( valpred > 32767 )
+          valpred = 32767;
+        else if ( valpred < -32768 )
+          valpred = -32768;
+
+        /* Step 5 - Assemble value, update index and step values */
+        delta |= sign;
+        
+        index += indexTable[delta];
+        if ( index < 0 ) index = 0;
+        if ( index > 88 ) index = 88;
+        step = stepsizeTable[index];
+
+        /* Step 6 - Output value */
+        if ( bufferstep ) {
+            outputbuffer = (delta << 4) & 0xf0;
+        } else {
+            *outp++ = (delta & 0x0f) | outputbuffer;
+        }
+        bufferstep = !bufferstep;
+    }
+
+    /* Output last step, if needed */
+    if ( !bufferstep )
+      *outp++ = outputbuffer;
+    
+    state->valprev = valpred;
+    state->index = index;
+}
+
+void
+adpcm_decoder(indata, outdata, len, state)
+    char indata[];
+    short outdata[];
+    int len;
+    struct adpcm_state *state;
+{
+            signed char *inp;   /* Input buffer pointer */
+            short *outp;        /* output buffer pointer */
+            int sign;           /* Current adpcm sign bit */
+            int delta;          /* Current adpcm output value */
+            int step;           /* Stepsize */
+            int valpred;        /* Predicted value */
+            int vpdiff;                 /* Current change to valpred */
+            int index;          /* Current step change index */
+            int inputbuffer;    /* place to keep next 4-bit value */
+            int bufferstep;     /* toggle between inputbuffer/input */
+
+    outp = outdata;
+    inp = (signed char *)indata;
+
+    valpred = state->valprev;
+    index = state->index;
+    step = stepsizeTable[index];
+
+    bufferstep = 0;
+    
+    for ( ; len > 0 ; len-- ) {
+        
+        /* Step 1 - get the delta value */
+        if ( bufferstep ) {
+            delta = inputbuffer & 0xf;
+        } else {
+            inputbuffer = *inp++;
+            delta = (inputbuffer >> 4) & 0xf;
+        }
+        bufferstep = !bufferstep;
+
+        /* Step 2 - Find new index value (for later) */
+        index += indexTable[delta];
+        if ( index < 0 ) index = 0;
+        if ( index > 88 ) index = 88;
+
+        /* Step 3 - Separate sign and magnitude */
+        sign = delta & 8;
+        delta = delta & 7;
+
+        /* Step 4 - Compute difference and new predicted value */
+        /*
+        ** Computes 'vpdiff = (delta+0.5)*step/4', but see comment
+        ** in adpcm_coder.
+        */
+        vpdiff = step >> 3;
+        if ( delta & 4 ) vpdiff += step;
+        if ( delta & 2 ) vpdiff += step>>1;
+        if ( delta & 1 ) vpdiff += step>>2;
+
+        if ( sign )
+          valpred -= vpdiff;
+        else
+          valpred += vpdiff;
+
+        /* Step 5 - clamp output value */
+        if ( valpred > 32767 )
+          valpred = 32767;
+        else if ( valpred < -32768 )
+          valpred = -32768;
+
+        /* Step 6 - Update step value */
+        step = stepsizeTable[index];
+
+        /* Step 7 - Output value */
+        *outp++ = valpred;
+    }
+
+    state->valprev = valpred;
+    state->index = index;
+}
diff --git a/core/applets/vmemo/adpcm.h b/core/applets/vmemo/adpcm.h
new file mode 100644
index 0000000..9c17ffa
--- a/dev/null
+++ b/core/applets/vmemo/adpcm.h
@@ -0,0 +1,19 @@
+/*
+** adpcm.h - include file for adpcm coder.
+**
+** Version 1.0, 7-Jul-92.
+*/
+
+struct adpcm_state {
+            short       valprev;/* Previous output value */
+            char        index;  /* Index into stepsize table */
+};
+
+#ifdef __STDC__
+#define ARGS(x) x
+#else
+#define ARGS(x) ()
+#endif
+
+void adpcm_coder ARGS((short [], char [], int, struct adpcm_state *));
+void adpcm_decoder ARGS((char [], short [], int, struct adpcm_state *));
diff --git a/core/applets/vmemo/vmemo.cpp b/core/applets/vmemo/vmemo.cpp
index b77e3b8..b5239eb 100644
--- a/core/applets/vmemo/vmemo.cpp
+++ b/core/applets/vmemo/vmemo.cpp
@@ -14,6 +14,10 @@
  * $Id$
  */
 // Sun 03-17-2002  L.J.Potter <ljp@llornkcor.com>
+extern "C" {
+#include "adpcm.h"
+}
+
 #include <sys/utsname.h>
 #include <sys/time.h>
 #include <sys/types.h>
@@ -57,6 +61,13 @@ typedef struct _waveheader {
 #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 <qpe/qpeapplication.h>
@@ -196,8 +207,7 @@ static char * vmemo_xpm[] = {
 
 
 VMemo::VMemo( QWidget *parent, const char *_name )
-  : QWidget( parent, _name )
-{
+  : QWidget( parent, _name ) {
   setFixedHeight( 18 );
   setFixedWidth( 14 );
   
@@ -213,6 +223,7 @@ VMemo::VMemo( QWidget *parent, const char *_name )
     Config vmCfg("Vmemo");
     vmCfg.setGroup("Defaults");
     int toggleKey = setToggleButton(vmCfg.readNumEntry("toggleKey", -1));
+    useADPCM = vmCfg.readBoolEntry("use_ADPCM", 0);
 
     qDebug("toggleKey %d", toggleKey);  
 
@@ -243,12 +254,10 @@ VMemo::VMemo( QWidget *parent, const char *_name )
   }
 }
 
-VMemo::~VMemo()
-{
+VMemo::~VMemo() {
 }
 
-void VMemo::receive( const QCString &msg, const QByteArray &data )
-{
+void VMemo::receive( const QCString &msg, const QByteArray &data ) {
   qDebug("receive");
   QDataStream stream( data, IO_ReadOnly );
   if (msg == "toggleRecord()")  {
@@ -264,14 +273,12 @@ void VMemo::receive( const QCString &msg, const QByteArray &data )
   }
 }
 
-void VMemo::paintEvent( QPaintEvent* )
-{
+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) {
   // just to be safe
   if (recording) {
           recording = FALSE;
@@ -279,8 +286,7 @@ 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 ( me->button() != LeftButton)
-
+  if ( me->button() != LeftButton ||  me != NULL) 
   //  if (!systemZaurus && me != NULL)
         return;
 
@@ -290,8 +296,7 @@ void VMemo::mousePressEvent( QMouseEvent * me)
        stopRecording();
 }
 
-void VMemo::mouseReleaseEvent( QMouseEvent * )
-{
+void VMemo::mouseReleaseEvent( QMouseEvent * ) {
 //      if(usingIcon && !recording)
 //          stopRecording();
 }
@@ -375,9 +380,10 @@ bool VMemo::startRecording() {
     ::close(dsp);
     return FALSE;
   }
+  record();
+
   QString cmd;
   cmd.sprintf("mv %s "+fileName,pointer);
-
 // move tmp file to regular file here
   system(cmd.latin1());
 
@@ -393,8 +399,6 @@ bool VMemo::startRecording() {
   l.setCategories(cats);
   l.writeLink();
   
-  record();
-
   return TRUE;
 }
 
@@ -414,8 +418,7 @@ void VMemo::stopRecording() {
         hide();
 }
 
-int VMemo::openDSP()
-{
+int VMemo::openDSP() {
   Config cfg("Vmemo");
   cfg.setGroup("Record");
   
@@ -467,8 +470,7 @@ int VMemo::openDSP()
   return 1;
 }
 
-int VMemo::openWAV(const char *filename)
-{
+int VMemo::openWAV(const char *filename) {
   track.setName(filename);
   if(!track.open(IO_WriteOnly|IO_Truncate|IO_Raw)) {
     errorMsg=filename;
@@ -484,6 +486,9 @@ int VMemo::openWAV(const char *filename)
   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;
@@ -499,8 +504,7 @@ int VMemo::openWAV(const char *filename)
   return 1;
 }
 
-void VMemo::record(void)
-{
+void VMemo::record(void) {
   int length=0, result, value;
   QString msg;
   msg.sprintf("Recording format %d", format);
@@ -511,84 +515,46 @@ void VMemo::record(void)
 
   t_timer->start( sRate * 1000+1000, TRUE);
 
-  if(systemZaurus) {
+//    if(systemZaurus) {
+//    } else { // 16 bit only capabilities
 
-    msg.sprintf("Recording format zaurus");
+    msg.sprintf("Recording format other");
     qDebug(msg);
-    signed short sound[1024], monoBuffer[1024];
-  
-    if(format==AFMT_S16_LE)  {
-
 
+    int bufsize=1024;
+    int bytesWritten=0;
+    signed short sound[1024], monoBuffer[1024];
+    char abuf[bufsize/2];
+    short sbuf[bufsize];
 
       while(recording)   {
 
+        if(useADPCM)
+            result = read( dsp, sbuf, bufsize); // 8192
+        else
         result = read(dsp, sound, 1024); // 8192
-        //        int j=0;
-
-        for (int i = 0; i < result; i++) { //since Z is mono do normally
-          monoBuffer[i] = sound[i];
-        }
-
-        length+=write(wav, monoBuffer, result);
-        if(length<0)
-          recording=false;
-          //           for (int i = 0; i < result; i+=2) {
-        //             monoBuffer[j] = sound[i];
-        //             //            monoBuffer[j] = (sound[i]+sound[i+1])/2;
-
-        //             j++;
-        //           }
-        qApp->processEvents();
-        //                 printf("%d\r",length);
-        //                 fflush(stdout);
+        if( result <= 0) {
+          perror("recording error ");
+//          qDebug(currentFileName);
+          QMessageBox::message(tr("Note"),tr("error recording"));
+          recording=FALSE;;
+          break;
       }
     
-    } else { //AFMT_U8 
-      // 8bit unsigned
-      unsigned short sound[1024], monoBuffer[1024];
-      while(recording)   {
-        result = read(dsp, sound, 1024); // 8192
-        //        int j=0;
-
-        //        if(systemZaurus) {
+        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, monoBuffer, result);
-
-        //           for (int i = 0; i < result; i+=2) {
-        //             monoBuffer[j] = (sound[i]+sound[i+1])/2;
-        //             j++;
-        //           }
-        //           length+=write(wav, monoBuffer, result/2);
-        length += result;
-        //            printf("%d\r",length);
-        //               fflush(stdout);
-      }
-
-      qApp->processEvents();
     }
-
-  } else { // 16 bit only capabilities
-
-
-    msg.sprintf("Recording format other");
-    qDebug(msg);
-
-    signed short sound[1024];//, monoBuffer[512];
-
-    while(recording)  {
-
-      result = read(dsp, sound, 1024); // 8192
-
-      write(wav, sound, result);
-      length += result;
+        length +=bytesWritten;
 
       if(length<0) {
-
         recording=false;
         perror("dev/dsp's is a lookin' messy");
         QMessageBox::message("Vmemo"," Done1 recording\n"+ fileName);
@@ -600,7 +566,7 @@ void VMemo::record(void)
     //  qDebug("file has length of %d lasting %d seconds",
     //         length, (( length / speed) / channels) / 2 );
     // medialplayer states wrong length in secs
-  }
+    //  }
 
   //>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<//
 
diff --git a/core/applets/vmemo/vmemo.h b/core/applets/vmemo/vmemo.h
index 823c7b8..167af2a 100644
--- a/core/applets/vmemo/vmemo.h
+++ b/core/applets/vmemo/vmemo.h
@@ -36,7 +36,7 @@ public:
   QString fileName, errorMsg;
   QLabel* msgLabel;
   QTimer *t_timer;
-bool usingIcon;
+bool usingIcon, useADPCM;
 public slots:
   void record();
   void mousePressEvent( QMouseEvent * );
diff --git a/core/applets/vmemo/vmemo.pro b/core/applets/vmemo/vmemo.pro
index f8007b6..6599b52 100644
--- a/core/applets/vmemo/vmemo.pro
+++ b/core/applets/vmemo/vmemo.pro
@@ -1,7 +1,7 @@
         TEMPLATE= lib
         CONFIG  += qt warn_on release
-        HEADERS=   vmemo.h vmemoimpl.h
-        SOURCES=   vmemo.cpp vmemoimpl.cpp
+HEADERS =   vmemo.h vmemoimpl.h adpcm.h
+SOURCES =   vmemo.cpp vmemoimpl.cpp adpcm.c
         TARGET  = vmemoapplet
         DESTDIR         =$(OPIEDIR)/plugins/applets
 INCLUDEPATH += $(OPIEDIR)/include