audio/audio.h

   1 /*
   2  * QEMU Audio subsystem header
   3  *
   4  * Copyright (c) 2003-2004 Vassili Karpov (malc)
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #ifndef QEMU_AUDIO_H
  25 #define QEMU_AUDIO_H
  26
  27 #include "mixeng.h"
  28
  29 typedef enum {
  30   AUD_FMT_U8,
  31   AUD_FMT_S8,
  32   AUD_FMT_U16,
  33   AUD_FMT_S16
  34 } audfmt_e;
  35
  36 typedef struct SWVoice SWVoice;
  37
  38 SWVoice * AUD_open (SWVoice *sw, const char *name, int freq,
  39                     int nchannels, audfmt_e fmt);
  40 void   AUD_init (void);
  41 void   AUD_log (const char *cap, const char *fmt, ...)
  42     __attribute__ ((__format__ (__printf__, 2, 3)));;
  43 void   AUD_close (SWVoice *sw);
  44 int    AUD_write (SWVoice *sw, void *pcm_buf, int size);
  45 void   AUD_adjust (SWVoice *sw, int leftover);
  46 void   AUD_reset (SWVoice *sw);
  47 int    AUD_get_free (SWVoice *sw);
  48 int    AUD_get_buffer_size (SWVoice *sw);
  49 void   AUD_run (void);
  50 void   AUD_enable (SWVoice *sw, int on);
  51 int    AUD_calc_elapsed (SWVoice *sw);
  52
  53 static inline void *advance (void *p, int incr)
  54 {
  55     uint8_t *d = p;
  56     return (d + incr);
  57 }
  58
  59 uint32_t popcount (uint32_t u);
  60 inline uint32_t lsbindex (uint32_t u);
  61
  62 #define audio_MIN(a, b) ((a)>(b)?(b):(a))
  63 #define audio_MAX(a, b) ((a)<(b)?(b):(a))
  64
  65 #endif  /* audio.h */