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comparison demo/play_spc.c @ 0:e38dacceb958

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initial import
author Robert McIntyre <rlm@mit.edu>
date Fri, 21 Oct 2011 05:53:11 -0700
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-1:000000000000 0:e38dacceb958
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 }