view convert/spc_convert.c @ 9:477c36226481 tip

added old scripts for historical interest.
author Robert McIntyre <rlm@mit.edu>
date Fri, 21 Oct 2011 07:46:18 -0700
parents a37863126396
children
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1 /* Records SPC into wave file. Uses dsp_filter to give more authentic sound.
3 Usage: spc_convert -s seconds -i input.spc -o output.wav
4 */
6 #include "snes_spc/spc.h"
8 #include "demo/wave_writer.h"
9 #include "demo/demo_util.h" /* error(), load_file() */
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" );
18 int seconds = atoi(argv[2]);
20 if (argc != 7) {
21 error("Incorrect Arguments\n Sample invocation: \n spc_convert -s 5 -i input.spc -o output.wav");
22 }
24 if (seconds <=0){
25 error("seconds must be positive.");
26 }
28 /* Load SPC */
29 {
30 /* Load file into memory */
31 long spc_size;
32 void* spc = load_file( argv[4] , &spc_size );
34 /* Load SPC data into emulator */
35 error( spc_load_spc( snes_spc, spc, spc_size ) );
36 free( spc ); /* emulator makes copy of data */
38 /* Most SPC files have garbage data in the echo buffer, so clear that */
39 spc_clear_echo( snes_spc );
41 /* Clear filter before playing */
42 spc_filter_clear( filter );
43 }
45 /* Record 20 seconds to wave file */
46 wave_open( spc_sample_rate, argv[6] );
47 wave_enable_stereo();
48 while ( wave_sample_count() < seconds * spc_sample_rate * 2 )
49 {
50 /* Play into buffer */
51 #define BUF_SIZE 2048
52 short buf [BUF_SIZE];
53 error( spc_play( snes_spc, BUF_SIZE, buf ) );
55 /* Filter samples */
56 spc_filter_run( filter, buf, BUF_SIZE );
58 wave_write( buf, BUF_SIZE );
59 }
61 /* Cleanup */
62 spc_filter_delete( filter );
63 spc_delete( snes_spc );
64 wave_close();
66 return 0;
67 }