Revision 2:68f1136f2ea6, committed 2015-05-01

Comitter:

anevil14

Date:

Fri May 01 16:50:44 2015 +0000

Parent:

1:acc3e18e77ad

Commit message:

The Wave Player is interrupted when a pushbutton is pressed

Changed in this revision

--- a/wave_player.cpp	Tue Jan 18 03:57:27 2011 +0000
+++ b/wave_player.cpp	Fri May 01 16:50:44 2015 +0000
@@ -44,7 +44,7 @@
 // SDcard filesystem can be hotrodded by increasing the SPI frequency it uses
 // internally.
 //-----------------------------------------------------------------------------
-void wave_player::play(FILE *wavefile)
+void wave_player::play(FILE *wavefile, bool *play, int *control)
 {
         unsigned chunk_id,chunk_size,channel;
         unsigned data,samp_int,i;
@@ -129,7 +129,20 @@
 // while 16 and 32 bit wave files use signed data
 //
         for (slice=0;slice<num_slices;slice+=1) {
+        
+        playStop = *play;
+        volumeControl = *control;
+        if (playStop == false)
+        {
+            DAC_on = 0;
+            tick.detach();
+            free(slice_buf);
+            return;
+        }
           fread(slice_buf,wav_format.block_align,1,wavefile);
+       //   while (*play == false) {
+       //   break;
+       //   }
           if (feof(wavefile)) {
             printf("Oops -- not enough slices in the wave file\n");
             exit(1);
@@ -170,6 +183,8 @@
                         slice_value+=32768;
                         break;
           }
+          slice_value = slice_value * (16 - volumeControl);
+          slice_value = slice_value >> 4;
           dac_data=(short unsigned)slice_value;
           if (verbosity)
             printf("sample %d wptr %d slice_value %d dac_data %u\n",slice,DAC_wptr,(int)slice_value,dac_data);

--- a/wave_player.h	Tue Jan 18 03:57:27 2011 +0000
+++ b/wave_player.h	Fri May 01 16:50:44 2015 +0000
@@ -43,8 +43,7 @@
  *
  * @param wavefile  A pointer to an opened wave file
  */
-void play(FILE *wavefile);
-
+void play(FILE *wavefile, bool *play, int *control);
 /** Set the printf verbosity of the wave player.  A nonzero verbosity level
  * will put wave_player in a mode where the complete contents of the wave
  * file are echoed to the screen, including header values, and including
@@ -67,6 +66,9 @@
 short DAC_wptr;
 volatile short DAC_rptr;
 short DAC_on;
+
+bool playStop;
+int volumeControl;
 };