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rlm@2
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1 /* Records SPC into wave file. Uses dsp_filter to give more authentic sound.
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rlm@2
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2
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rlm@3
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3 Usage: spc_convert -s seconds -i input.spc -o output.wav
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rlm@2
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4 */
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rlm@2
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5
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rlm@2
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6 #include "snes_spc/spc.h"
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rlm@2
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7
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rlm@2
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8 #include "demo/wave_writer.h"
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rlm@2
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9 #include "demo/demo_util.h" /* error(), load_file() */
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rlm@2
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10
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rlm@2
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11 int main( int argc, char** argv )
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rlm@2
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12 {
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rlm@2
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13 /* Create emulator and filter */
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rlm@2
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14 SNES_SPC* snes_spc = spc_new();
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rlm@2
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15 SPC_Filter* filter = spc_filter_new();
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rlm@2
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16 if ( !snes_spc || !filter ) error( "Out of memory" );
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rlm@3
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17
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rlm@3
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18 int seconds = atoi(argv[2]);
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rlm@3
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19
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rlm@3
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20 if (seconds <=0){
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rlm@3
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21 error("seconds must be positive.");
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rlm@3
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22 }
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rlm@3
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23
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rlm@3
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24 if (argc != 7) {
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rlm@3
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25 error("Incorrect Arguments\n Sample invocation: \n spc_convert -s 5 -i input.spc -o output.wav");
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rlm@3
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26 }
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rlm@2
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27 /* Load SPC */
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rlm@2
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28 {
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rlm@2
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29 /* Load file into memory */
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rlm@2
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30 long spc_size;
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rlm@3
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31 void* spc = load_file( argv[4] , &spc_size );
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rlm@2
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32
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rlm@2
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33 /* Load SPC data into emulator */
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rlm@2
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34 error( spc_load_spc( snes_spc, spc, spc_size ) );
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rlm@2
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35 free( spc ); /* emulator makes copy of data */
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rlm@2
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36
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rlm@2
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37 /* Most SPC files have garbage data in the echo buffer, so clear that */
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rlm@2
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38 spc_clear_echo( snes_spc );
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rlm@2
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39
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rlm@2
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40 /* Clear filter before playing */
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rlm@2
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41 spc_filter_clear( filter );
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rlm@2
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42 }
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rlm@2
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43
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rlm@2
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44 /* Record 20 seconds to wave file */
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rlm@3
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45 wave_open( spc_sample_rate, argv[6] );
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rlm@2
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46 wave_enable_stereo();
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rlm@3
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47 while ( wave_sample_count() < seconds * spc_sample_rate * 2 )
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rlm@2
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48 {
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rlm@2
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49 /* Play into buffer */
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rlm@2
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50 #define BUF_SIZE 2048
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rlm@2
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51 short buf [BUF_SIZE];
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rlm@2
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52 error( spc_play( snes_spc, BUF_SIZE, buf ) );
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rlm@2
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53
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rlm@2
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54 /* Filter samples */
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rlm@2
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55 spc_filter_run( filter, buf, BUF_SIZE );
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rlm@2
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56
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rlm@2
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57 wave_write( buf, BUF_SIZE );
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rlm@2
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58 }
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rlm@2
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59
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rlm@2
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60 /* Cleanup */
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61 spc_filter_delete( filter );
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rlm@2
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62 spc_delete( snes_spc );
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63 wave_close();
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64
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65 return 0;
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rlm@2
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66 }
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