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Annotation of uae/src/od-acorn/sound.c, revision 1.1.1.2

1.1.1.2 ! root        1:  /*
1.1       root        2:   * UAE - The Un*x Amiga Emulator
                      3:   * 
                      4:   * Support for Acorn RISC-OS sound
                      5:   * 
                      6:   * Copyright 1996, 1997 Peter Teichmann
                      7:   */
                      8: 
                      9: #include "sysconfig.h"
                     10: #include "sysdeps.h"
                     11: 
                     12: #include "config.h"
                     13: #include "options.h"
                     14: #include "memory.h"
                     15: #include "custom.h"
                     16: #include "audio.h"
                     17: #include "gensound.h"
                     18: #include "sounddep/sound.h"
                     19: 
                     20: #include <math.h>
                     21: 
                     22: extern int sratecode;
                     23: uae_u16 sndbuffer[44100];
                     24: uae_u16 *sndbufpt;
                     25: int sndbufsize;
                     26: 
                     27: int init_sound (void)
                     28: {
1.1.1.2 ! root       29:     int rate, dspbits;
1.1       root       30:   
1.1.1.2 ! root       31:     dspbits = sound_desired_bits;
        !            32:     rate = sound_desired_freq;
        !            33:     sratecode = 4096.0*log(rate/4096.0)/log(2.0);
        !            34:     sndbufsize = sound_desired_maxbsiz;
1.1       root       35: 
1.1.1.2 ! root       36:     sample_evtime = (long)maxhpos*maxvpos*50/rate;
1.1       root       37:   
1.1.1.2 ! root       38:     if (dspbits == 16)
        !            39:     {
        !            40:        init_sound_table16 ();
        !            41:        sample_handler = sample16_handler;
        !            42:     } else {
        !            43:        init_sound_table8 ();
        !            44:        sample_handler = sample8_handler;
        !            45:     }
        !            46: 
        !            47:     sound_available=1;
        !            48:     sndbufpt=sndbuffer;
1.1       root       49:   
1.1.1.2 ! root       50:     return 1;
1.1       root       51: }
                     52: 
                     53: void close_sound(void)
                     54: {
                     55: }
                     56: 

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