Mercurial > spc_convert

     1 /* Records SPC into wave file. Uses dsp_filter to give more authentic sound.

     2 

     3 Usage: play_spc [test.spc]

     4 */

     5 

     6 #include "snes_spc/spc.h"

     7 

     8 #include "wave_writer.h"

     9 #include "demo_util.h" /* error(), load_file() */

    10 

    11 int main( int argc, char** argv )

    12 {

    13 	/* Create emulator and filter */

    14 	SNES_SPC* snes_spc = spc_new();

    15 	SPC_Filter* filter = spc_filter_new();

    16 	if ( !snes_spc || !filter ) error( "Out of memory" );

    17 	

    18 	/* Load SPC */

    19 	{

    20 		/* Load file into memory */

    21 		long spc_size;

    22 		void* spc = load_file( (argc > 1) ? argv [1] : "test.spc", &spc_size );

    23 		

    24 		/* Load SPC data into emulator */

    25 		error( spc_load_spc( snes_spc, spc, spc_size ) );

    26 		free( spc ); /* emulator makes copy of data */

    27 		

    28 		/* Most SPC files have garbage data in the echo buffer, so clear that */

    29 		spc_clear_echo( snes_spc );

    30 		

    31 		/* Clear filter before playing */

    32 		spc_filter_clear( filter );

    33 	}

    34 	

    35 	/* Record 20 seconds to wave file */

    36 	wave_open( spc_sample_rate, "out.wav" );

    37 	wave_enable_stereo();

    38 	while ( wave_sample_count() < 20 * spc_sample_rate * 2 )

    39 	{

    40 		/* Play into buffer */

    41 		#define BUF_SIZE 2048

    42 		short buf [BUF_SIZE];

    43 		error( spc_play( snes_spc, BUF_SIZE, buf ) );

    44 		

    45 		/* Filter samples */

    46 		spc_filter_run( filter, buf, BUF_SIZE );

    47 		

    48 		wave_write( buf, BUF_SIZE );

    49 	}

    50 	

    51 	/* Cleanup */

    52 	spc_filter_delete( filter );

    53 	spc_delete( snes_spc );

    54 	wave_close();

    55 	

    56 	return 0;

    57 }
author	Robert McIntyre <rlm@mit.edu>
date	Fri, 21 Oct 2011 05:53:11 -0700
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