Diff: wavplayer.h

Revision:

0:fef366d2ed20

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wavplayer.h	Tue Nov 22 05:45:58 2011 +0000
@@ -0,0 +1,51 @@
+/*
+ Library wave file player by Tom Coxon
+
+ Based on WAVEplayer by Vlad Cazan/Stephan Rochon modified by Tom Coxon to:
+
+ 1. Run correctly on the Embedded Artists LPCXpresso baseboard.
+ 2. To play 8 bit sample size in addition to original 16 bit
+ 3. To be more fault tolerant when playing wav files.
+*/
+
+#ifndef WAVPLAYER_H
+#define WAVPLAYER_H
+
+#include "mbed.h"
+
+#define SAMPLE_FREQ 40000
+#define BUF_SIZE (SAMPLE_FREQ/10)
+#define SLICE_BUF_SIZE 1
+
+typedef struct uFMT_STRUCT {
+    short comp_code;
+    short num_channels;
+    unsigned sample_rate;
+    unsigned avg_Bps;
+    short block_align;
+    short sig_bps;
+} FMT_STRUCT;
+
+class WavPlayer {
+
+public:
+
+    void play_wave(char *wavname);
+
+private:
+
+    void cleanup(char *);
+    void fill_adc_buf(short *, unsigned);
+    void swapword(unsigned *);
+
+// a FIFO for the DAC
+    short DAC_fifo[256];
+    short DAC_wptr;
+    short DAC_rptr;
+    short DAC_on;
+
+    void dac_out();
+
+};
+
+#endif