Brice Croxton / wave_player

Wave player with increased output frequency.

Fork of wave_player by Steve Ravet

Files at this revision

API Documentation at this revision

Revision 2:f8dce50a1fd6, committed 2016-03-16

Comitter:
bricecroxton
Date:
Wed Mar 16 19:11:00 2016 +0000
Parent:
1:acc3e18e77ad
Commit message:
Frequency augmentation.

Changed in this revision

wave_player.cpp Show annotated file Show diff for this revision Revisions of this file
wave_player.h Show annotated file Show diff for this revision Revisions of this file 
--- a/wave_player.cpp	Tue Jan 18 03:57:27 2011 +0000
+++ b/wave_player.cpp	Wed Mar 16 19:11:00 2016 +0000
@@ -56,6 +56,9 @@
         int *data_wptr;
         FMT_STRUCT wav_format;
         long slice,num_slices;
+        
+        
+
   DAC_wptr=0;
   DAC_rptr=0;
   for (i=0;i<256;i+=2) {
@@ -68,6 +71,8 @@
   fread(&chunk_id,4,1,wavefile);
   fread(&chunk_size,4,1,wavefile);
   while (!feof(wavefile)) {
+    
+    
     if (verbosity)
       printf("Read chunk ID 0x%x, size 0x%x\n",chunk_id,chunk_size);
     switch (chunk_id) {
@@ -193,7 +198,7 @@
         break;
     }
     fread(&chunk_id,4,1,wavefile);
-    fread(&chunk_size,4,1,wavefile);
+    fread(&chunk_size,4,1,wavefile);    
   }
 }
 
@@ -204,7 +209,7 @@
 #ifdef VERBOSE
   printf("ISR rdptr %d got %u\n",DAC_rptr,DAC_fifo[DAC_rptr]);
 #endif
-    wave_DAC->write_u16(DAC_fifo[DAC_rptr]);
+    wave_DAC->write_u16(DAC_fifo[DAC_rptr] *(16-volume)/16);
     DAC_rptr=(DAC_rptr+1) & 0xff;
   }
 }

--- a/wave_player.h	Tue Jan 18 03:57:27 2011 +0000
+++ b/wave_player.h	Wed Mar 16 19:11:00 2016 +0000
@@ -58,6 +58,9 @@
  */
 void set_verbosity(int v);
 
+public:
+unsigned int volume;
+
 private:
 void dac_out(void);
 int verbosity;