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Annotation of uae/src/sd-alsa/sound.h, revision 1.1.1.4

1.1.1.2   root        1:  /*
1.1       root        2:   * UAE - The Un*x Amiga Emulator
1.1.1.2   root        3:   *
1.1       root        4:   * Support for Linux/ALSA sound
1.1.1.2   root        5:   *
1.1       root        6:   * Copyright 1997 Bernd Schmidt
                      7:   * Copyright 2004 Heikki Orsila
                      8:   */
                      9: 
                     10: #include <alsa/asoundlib.h>
                     11: 
1.1.1.4 ! root       12: extern uae_u16 *sndbufpt, *sndbuf_base;
1.1       root       13: extern int sndbufsize;
                     14: 
1.1.1.4 ! root       15: extern void finish_sound_buffers (void);
1.1       root       16: 
1.1.1.3   root       17: static int check_sound_buffers (void)
1.1       root       18: {
1.1.1.4 ! root       19:     if ((char *) sndbufpt - (char *) sndbuf_base >= sndbufsize) {
        !            20:        finish_sound_buffers ();
1.1.1.3   root       21:        return 1;
1.1       root       22:     }
1.1.1.3   root       23:     return 0;
1.1       root       24: }
                     25: 
                     26: #define PUT_SOUND_BYTE(b) do { *(uae_u8 *)sndbufpt = b; sndbufpt = (uae_u16 *)(((uae_u8 *)sndbufpt) + 1); } while (0)
                     27: #define PUT_SOUND_WORD(b) do { *(uae_u16 *)sndbufpt = b; sndbufpt = (uae_u16 *)(((uae_u8 *)sndbufpt) + 2); } while (0)
                     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 128
                     34: 
1.1.1.4 ! root       35: #define DEFAULT_SOUND_MAXB 2048
        !            36: #define DEFAULT_SOUND_MINB 2048
1.1       root       37: #define DEFAULT_SOUND_BITS 16
                     38: #define DEFAULT_SOUND_FREQ 44100
                     39: #define HAVE_STEREO_SUPPORT

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