1: /*
    2:  * QEMU Mixing engine header
    3:  *
    4:  * Copyright (c) 2004-2005 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_MIXENG_H
   25: #define QEMU_MIXENG_H
   26: 
   27: #ifdef FLOAT_MIXENG
   28: typedef float real_t;
   29: typedef struct { int mute; real_t r; real_t l; } volume_t;
   30: typedef struct { real_t l; real_t r; } st_sample_t;
   31: #else
   32: typedef struct { int mute; int64_t r; int64_t l; } volume_t;
   33: typedef struct { int64_t l; int64_t r; } st_sample_t;
   34: #endif
   35: 
   36: typedef void (t_sample) (st_sample_t *dst, const void *src,
   37:                          int samples, volume_t *vol);
   38: typedef void (f_sample) (void *dst, const st_sample_t *src, int samples);
   39: 
   40: extern t_sample *mixeng_conv[2][2][2][3];
   41: extern f_sample *mixeng_clip[2][2][2][3];
   42: 
   43: void *st_rate_start (int inrate, int outrate);
   44: void st_rate_flow (void *opaque, st_sample_t *ibuf, st_sample_t *obuf,
   45:                    int *isamp, int *osamp);
   46: void st_rate_flow_mix (void *opaque, st_sample_t *ibuf, st_sample_t *obuf,
   47:                        int *isamp, int *osamp);
   48: void st_rate_stop (void *opaque);
   49: void mixeng_clear (st_sample_t *buf, int len);
   50: 
   51: #endif  /* mixeng.h */