rlm@0: /* Records SPC into wave file. Uses dsp_filter to give more authentic sound.
rlm@0: 
rlm@0: Usage: play_spc [test.spc]
rlm@0: */
rlm@0: 
rlm@0: #include "snes_spc/spc.h"
rlm@0: 
rlm@0: #include "wave_writer.h"
rlm@0: #include "demo_util.h" /* error(), load_file() */
rlm@0: 
rlm@0: int main( int argc, char** argv )
rlm@0: {
rlm@0: 	/* Create emulator and filter */
rlm@0: 	SNES_SPC* snes_spc = spc_new();
rlm@0: 	SPC_Filter* filter = spc_filter_new();
rlm@0: 	if ( !snes_spc || !filter ) error( "Out of memory" );
rlm@0: 	
rlm@0: 	/* Load SPC */
rlm@0: 	{
rlm@0: 		/* Load file into memory */
rlm@0: 		long spc_size;
rlm@0: 		void* spc = load_file( (argc > 1) ? argv [1] : "test.spc", &spc_size );
rlm@0: 		
rlm@0: 		/* Load SPC data into emulator */
rlm@0: 		error( spc_load_spc( snes_spc, spc, spc_size ) );
rlm@0: 		free( spc ); /* emulator makes copy of data */
rlm@0: 		
rlm@0: 		/* Most SPC files have garbage data in the echo buffer, so clear that */
rlm@0: 		spc_clear_echo( snes_spc );
rlm@0: 		
rlm@0: 		/* Clear filter before playing */
rlm@0: 		spc_filter_clear( filter );
rlm@0: 	}
rlm@0: 	
rlm@0: 	/* Record 20 seconds to wave file */
rlm@0: 	wave_open( spc_sample_rate, "out.wav" );
rlm@0: 	wave_enable_stereo();
rlm@0: 	while ( wave_sample_count() < 20 * spc_sample_rate * 2 )
rlm@0: 	{
rlm@0: 		/* Play into buffer */
rlm@0: 		#define BUF_SIZE 2048
rlm@0: 		short buf [BUF_SIZE];
rlm@0: 		error( spc_play( snes_spc, BUF_SIZE, buf ) );
rlm@0: 		
rlm@0: 		/* Filter samples */
rlm@0: 		spc_filter_run( filter, buf, BUF_SIZE );
rlm@0: 		
rlm@0: 		wave_write( buf, BUF_SIZE );
rlm@0: 	}
rlm@0: 	
rlm@0: 	/* Cleanup */
rlm@0: 	spc_filter_delete( filter );
rlm@0: 	spc_delete( snes_spc );
rlm@0: 	wave_close();
rlm@0: 	
rlm@0: 	return 0;
rlm@0: }