Hirokazu enya / MagneWave

Gugen展示版

Fork of MagneWave by kouzi osaki

MagneWave.cpp@0:5a700113dd87, 2013-10-29 (annotated)

Committer:
doctorura
Date:
Tue Oct 29 06:49:27 2013 +0000
Revision:
0:5a700113dd87
Child:
1:a82b9af36dbf
MagneWave (16bit PCM only player) is added.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
doctorura 0:5a700113dd87 1 #include "MagneWave.h"
doctorura 0:5a700113dd87 2
doctorura 0:5a700113dd87 3 MagneWave::MagneWave( SoftMCP4922 *dac )
doctorura 0:5a700113dd87 4 {
doctorura 0:5a700113dd87 5 m_wave_DAC = dac;
doctorura 0:5a700113dd87 6 m_wave_DAC->write_u16( 32768 );
doctorura 0:5a700113dd87 7 }
doctorura 0:5a700113dd87 8
doctorura 0:5a700113dd87 9 void MagneWave::play( FILE *wavefile )
doctorura 0:5a700113dd87 10 {
doctorura 0:5a700113dd87 11 #if 0
doctorura 0:5a700113dd87 12 // data size check
doctorura 0:5a700113dd87 13 unsiged long dataSize = 0;
doctorura 0:5a700113dd87 14 seek( wavefile, 40, SEEK_SET );
doctorura 0:5a700113dd87 15 dataSize = fgetc( wavefile );
doctorura 0:5a700113dd87 16 dataSize |= ( fgetc( wavefile ) << 8 );
doctorura 0:5a700113dd87 17 dataSize |= ( fgetc( wavefile ) << 16 );
doctorura 0:5a700113dd87 18 dataSize |= ( fgetc( wavefile ) << 24 );
doctorura 0:5a700113dd87 19 printf("data size = %ld\n", dataSize );
doctorura 0:5a700113dd87 20 #endif
doctorura 0:5a700113dd87 21
doctorura 0:5a700113dd87 22 // jump to wave data
doctorura 0:5a700113dd87 23 fseek( wavefile, 44, SEEK_SET );
doctorura 0:5a700113dd87 24
doctorura 0:5a700113dd87 25 while(1){
doctorura 0:5a700113dd87 26 int tmpL = 0;
doctorura 0:5a700113dd87 27 int tmpH = 0;
doctorura 0:5a700113dd87 28 unsigned short dacVal16 = 0;
doctorura 0:5a700113dd87 29 tmpL = fgetc( wavefile );
doctorura 0:5a700113dd87 30 if( tmpL == EOF ){
doctorura 0:5a700113dd87 31 break;
doctorura 0:5a700113dd87 32 }
doctorura 0:5a700113dd87 33 tmpH = fgetc( wavefile );
doctorura 0:5a700113dd87 34 if( tmpH == EOF ){
doctorura 0:5a700113dd87 35 break;
doctorura 0:5a700113dd87 36 }
doctorura 0:5a700113dd87 37 dacVal16 = tmpL;
doctorura 0:5a700113dd87 38 dacVal16 |= ( tmpH << 8 );
doctorura 0:5a700113dd87 39 m_wave_DAC->write_u16( dacVal16 );
doctorura 0:5a700113dd87 40
doctorura 0:5a700113dd87 41 // TODO: adjust cycle
doctorura 0:5a700113dd87 42 wait( 0.005 );
doctorura 0:5a700113dd87 43 }
doctorura 0:5a700113dd87 44 }