Yuji Notsu
This program is for Star Board Orange. Wave file into SD card is read, and its DAC signal output.
Dependencies: EthernetNetIf mbed HTTPServer
wavplayer.h@0:383bff20e783, 2010-11-25 (annotated)
- Committer:
- y_notsu
- Date:
- Thu Nov 25 14:59:16 2010 +0000
- Revision:
- 0:383bff20e783
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| y_notsu | 0:383bff20e783 | 1 | /* |
| y_notsu | 0:383bff20e783 | 2 | Library wave file player by Tom Coxon |
| y_notsu | 0:383bff20e783 | 3 | |
| y_notsu | 0:383bff20e783 | 4 | Based on WAVEplayer by Vlad Cazan/Stephan Rochon modified by Tom Coxon to: |
| y_notsu | 0:383bff20e783 | 5 | |
| y_notsu | 0:383bff20e783 | 6 | 1. Run correctly on the Embedded Artists LPCXpresso baseboard. |
| y_notsu | 0:383bff20e783 | 7 | 2. To play 8 bit sample size in addition to original 16 bit |
| y_notsu | 0:383bff20e783 | 8 | 3. To be more fault tolerant when playing wav files. |
| y_notsu | 0:383bff20e783 | 9 | */ |
| y_notsu | 0:383bff20e783 | 10 | |
| y_notsu | 0:383bff20e783 | 11 | #ifndef WAVPLAYER_H |
| y_notsu | 0:383bff20e783 | 12 | #define WAVPLAYER_H |
| y_notsu | 0:383bff20e783 | 13 | |
| y_notsu | 0:383bff20e783 | 14 | #include "mbed.h" |
| y_notsu | 0:383bff20e783 | 15 | |
| y_notsu | 0:383bff20e783 | 16 | #define SAMPLE_FREQ 32000 |
| y_notsu | 0:383bff20e783 | 17 | #define BUF_SIZE (SAMPLE_FREQ/10) |
| y_notsu | 0:383bff20e783 | 18 | #define SLICE_BUF_SIZE 1 |
| y_notsu | 0:383bff20e783 | 19 | |
| y_notsu | 0:383bff20e783 | 20 | typedef struct uFMT_STRUCT { |
| y_notsu | 0:383bff20e783 | 21 | short comp_code; |
| y_notsu | 0:383bff20e783 | 22 | short num_channels; |
| y_notsu | 0:383bff20e783 | 23 | unsigned sample_rate; |
| y_notsu | 0:383bff20e783 | 24 | unsigned avg_Bps; |
| y_notsu | 0:383bff20e783 | 25 | short block_align; |
| y_notsu | 0:383bff20e783 | 26 | short sig_bps; |
| y_notsu | 0:383bff20e783 | 27 | } FMT_STRUCT; |
| y_notsu | 0:383bff20e783 | 28 | |
| y_notsu | 0:383bff20e783 | 29 | class WavPlayer { |
| y_notsu | 0:383bff20e783 | 30 | |
| y_notsu | 0:383bff20e783 | 31 | public: |
| y_notsu | 0:383bff20e783 | 32 | |
| y_notsu | 0:383bff20e783 | 33 | void play_wave(char *wavname); |
| y_notsu | 0:383bff20e783 | 34 | |
| y_notsu | 0:383bff20e783 | 35 | private: |
| y_notsu | 0:383bff20e783 | 36 | |
| y_notsu | 0:383bff20e783 | 37 | void cleanup(char *); |
| y_notsu | 0:383bff20e783 | 38 | void fill_adc_buf(short *, unsigned); |
| y_notsu | 0:383bff20e783 | 39 | void swapword(unsigned *); |
| y_notsu | 0:383bff20e783 | 40 | |
| y_notsu | 0:383bff20e783 | 41 | // a FIFO for the DAC |
| y_notsu | 0:383bff20e783 | 42 | short DAC_fifo[256]; |
| y_notsu | 0:383bff20e783 | 43 | short DAC_wptr; |
| y_notsu | 0:383bff20e783 | 44 | short DAC_rptr; |
| y_notsu | 0:383bff20e783 | 45 | short DAC_on; |
| y_notsu | 0:383bff20e783 | 46 | |
| y_notsu | 0:383bff20e783 | 47 | void dac_out(); |
| y_notsu | 0:383bff20e783 | 48 | |
| y_notsu | 0:383bff20e783 | 49 | }; |
| y_notsu | 0:383bff20e783 | 50 | |
| y_notsu | 0:383bff20e783 | 51 | #endif |