workbench/libs/camd/getsysex.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: English
   7 */
   8
   9
  10 #include <proto/exec.h>
  11
  12 #include "camd_intern.h"
  13
  14
  15 /*****************************************************************************
  16
  17     NAME */
  18
  19         AROS_LH3(ULONG, GetSysEx,
  20
  21 /*  SYNOPSIS */
  22         AROS_LHA(struct MidiNode *, midinode, A0),
  23         AROS_LHA(UBYTE *, Buf, A1),
  24         AROS_LHA(ULONG, len, D0),
  25
  26 /*  LOCATION */
  27         struct CamdBase *, CamdBase, 27, Camd)
  28
  29 /*  FUNCTION
  30                 Remind me to fill in things here later.
  31
  32     INPUTS
  33
  34     RESULT
  35
  36     NOTES
  37
  38     EXAMPLE
  39
  40     BUGS
  41
  42     SEE ALSO
  43                 SkipSysEx(), QuerySysEx()
  44
  45     INTERNALS
  46
  47     HISTORY
  48
  49         2001-01-12 ksvalast first created
  50
  51 *****************************************************************************/
  52 {
  53     AROS_LIBFUNC_INIT
  54
  55         struct MyMidiNode *mymidinode=(struct MyMidiNode *)midinode;
  56         ULONG numread=0;
  57         UBYTE data;
  58
  59         if(mymidinode->sysex_nextis0==TRUE) return 0;
  60
  61         ObtainSemaphore(&mymidinode->sysexsemaphore2);
  62
  63                 mymidinode->sysex_nextis0=FALSE;
  64
  65                 while(numread<len){
  66                         data=*mymidinode->sysex_read;
  67                         mymidinode->sysex_read++;
  68                         if(mymidinode->sysex_read==mymidinode->sysex_end){
  69                                 mymidinode->sysex_read=mymidinode->sysex_start;
  70                         }
  71                         Buf[numread]=data;
  72                         numread++;
  73
  74                         if(data==0xf7){
  75                                 mymidinode->sysex_nextis0=TRUE;
  76                                 break;
  77                         }
  78                 }
  79
  80         ReleaseSemaphore(&mymidinode->sysexsemaphore2);
  81
  82
  83         return numread;
  84
  85
  86    AROS_LIBFUNC_EXIT
  87 }
  88
  89
  90