Mercurial > spc_convert

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

     2 

     3    Usage: play_spc [-s seconds] input.spc output.wav

     4 */

     5 

     6 #include "snes_spc/spc.h"

     7 

     8 #include "demo/wave_writer.h"

     9 #include "demo/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 06:21:33 -0700
parents
children	95cdedd01422