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1 /* Records SPC into wave file. Uses dsp_filter to give more authentic sound.
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2
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3 Usage: play_spc [test.spc]
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4 */
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5
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6 #include "snes_spc/spc.h"
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7
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8 #include "wave_writer.h"
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9 #include "demo_util.h" /* error(), load_file() */
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10
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11 int main( int argc, char** argv )
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12 {
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13 /* Create emulator and filter */
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14 SNES_SPC* snes_spc = spc_new();
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15 SPC_Filter* filter = spc_filter_new();
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16 if ( !snes_spc || !filter ) error( "Out of memory" );
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17
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18 /* Load SPC */
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19 {
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20 /* Load file into memory */
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21 long spc_size;
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22 void* spc = load_file( (argc > 1) ? argv [1] : "test.spc", &spc_size );
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23
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24 /* Load SPC data into emulator */
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25 error( spc_load_spc( snes_spc, spc, spc_size ) );
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26 free( spc ); /* emulator makes copy of data */
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27
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28 /* Most SPC files have garbage data in the echo buffer, so clear that */
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29 spc_clear_echo( snes_spc );
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30
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31 /* Clear filter before playing */
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32 spc_filter_clear( filter );
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33 }
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34
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35 /* Record 20 seconds to wave file */
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36 wave_open( spc_sample_rate, "out.wav" );
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37 wave_enable_stereo();
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38 while ( wave_sample_count() < 20 * spc_sample_rate * 2 )
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39 {
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40 /* Play into buffer */
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41 #define BUF_SIZE 2048
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42 short buf [BUF_SIZE];
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43 error( spc_play( snes_spc, BUF_SIZE, buf ) );
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44
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45 /* Filter samples */
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46 spc_filter_run( filter, buf, BUF_SIZE );
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47
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48 wave_write( buf, BUF_SIZE );
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49 }
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50
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51 /* Cleanup */
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52 spc_filter_delete( filter );
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53 spc_delete( snes_spc );
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54 wave_close();
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55
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56 return 0;
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57 }
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