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Annotation of uae/src/sd-sgi/sound.h, revision 1.1

1.1     ! root        1:  /* 
        !             2:   * UAE - The Un*x Amiga Emulator
        !             3:   * 
        !             4:   * Support for the Silicon Graphics Audio Library (AL)
        !             5:   * 
        !             6:   * Copyright 1998 Ari Heikkinen
        !             7:   */
        !             8: 
        !             9: #include <dmedia/audio.h>
        !            10: 
        !            11: extern uae_u16 sndbuffer[];
        !            12: extern uae_u16 *sndbufpt;
        !            13: extern int sndblocksize;
        !            14: extern ALport al_port;
        !            15: extern int to_frames_divisor;
        !            16: 
        !            17: static __inline__ void check_sound_buffers(void)
        !            18: {
        !            19:        int bytes = (char *)sndbufpt - (char *)sndbuffer;
        !            20:        if (bytes >= sndblocksize) {
        !            21:                alWriteFrames(al_port, sndbuffer, bytes / to_frames_divisor);
        !            22:                sndbufpt = sndbuffer;
        !            23:        }
        !            24: }
        !            25: 
        !            26: #define PUT_SOUND_BYTE(b) ( *(uae_u8 *)sndbufpt++ = (b) )
        !            27: #define PUT_SOUND_WORD(b) ( *(uae_u16 *)sndbufpt++ = (b) )
        !            28: #define PUT_SOUND_BYTE_LEFT(b) PUT_SOUND_BYTE(b)
        !            29: #define PUT_SOUND_WORD_LEFT(b) PUT_SOUND_WORD(b)
        !            30: #define PUT_SOUND_BYTE_RIGHT(b) PUT_SOUND_BYTE(b)
        !            31: #define PUT_SOUND_WORD_RIGHT(b) PUT_SOUND_WORD(b)
        !            32: #define SOUND16_BASE_VAL 0
        !            33: #define SOUND8_BASE_VAL 0
        !            34: 
        !            35: #define DEFAULT_SOUND_MINB 8192
        !            36: #define DEFAULT_SOUND_MAXB 8192
        !            37: #define DEFAULT_SOUND_BITS 16
        !            38: #define DEFAULT_SOUND_FREQ 44100
        !            39: #define HAVE_STEREO_SUPPORT

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