rlm@2: /* Records SPC into wave file. Uses dsp_filter to give more authentic sound.
rlm@2: 
rlm@3:    Usage: spc_convert -s seconds -i input.spc -o output.wav
rlm@2: */
rlm@2: 
rlm@2: #include "snes_spc/spc.h"
rlm@2: 
rlm@2: #include "demo/wave_writer.h"
rlm@2: #include "demo/demo_util.h" /* error(), load_file() */
rlm@2: 
rlm@2: int main( int argc, char** argv )
rlm@2: {
rlm@2:   /* Create emulator and filter */
rlm@2:   SNES_SPC* snes_spc = spc_new();
rlm@2:   SPC_Filter* filter = spc_filter_new();
rlm@2:   if ( !snes_spc || !filter ) error( "Out of memory" );
rlm@3:   
rlm@3:   int seconds = atoi(argv[2]);
rlm@3: 
rlm@8:   if (argc != 7) { 
rlm@8:     error("Incorrect Arguments\n Sample invocation: \n  spc_convert -s 5 -i input.spc -o output.wav");
rlm@8:   }
rlm@8: 
rlm@3:   if (seconds <=0){
rlm@3:     error("seconds must be positive.");
rlm@3:   }
rlm@3: 
rlm@2:   /* Load SPC */
rlm@2:   {
rlm@2:     /* Load file into memory */
rlm@2:     long spc_size;
rlm@3:     void* spc = load_file( argv[4] , &spc_size );
rlm@2: 		
rlm@2:     /* Load SPC data into emulator */
rlm@2:     error( spc_load_spc( snes_spc, spc, spc_size ) );
rlm@2:     free( spc ); /* emulator makes copy of data */
rlm@2: 		
rlm@2:     /* Most SPC files have garbage data in the echo buffer, so clear that */
rlm@2:     spc_clear_echo( snes_spc );
rlm@2: 		
rlm@2:     /* Clear filter before playing */
rlm@2:     spc_filter_clear( filter );
rlm@2:   }
rlm@2: 	
rlm@2:   /* Record 20 seconds to wave file */
rlm@3:   wave_open( spc_sample_rate, argv[6] );
rlm@2:   wave_enable_stereo();
rlm@3:   while ( wave_sample_count() < seconds * spc_sample_rate * 2 )
rlm@2:     {
rlm@2:       /* Play into buffer */
rlm@2: #define BUF_SIZE 2048
rlm@2:       short buf [BUF_SIZE];
rlm@2:       error( spc_play( snes_spc, BUF_SIZE, buf ) );
rlm@2: 		
rlm@2:       /* Filter samples */
rlm@2:       spc_filter_run( filter, buf, BUF_SIZE );
rlm@2: 		
rlm@2:       wave_write( buf, BUF_SIZE );
rlm@2:     }
rlm@2: 	
rlm@2:   /* Cleanup */
rlm@2:   spc_filter_delete( filter );
rlm@2:   spc_delete( snes_spc );
rlm@2:   wave_close();
rlm@2: 	
rlm@2:   return 0;
rlm@2: }