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 mixeng_real; 29 struct mixeng_volume { int mute; mixeng_real r; mixeng_real l; }; 30 struct st_sample { mixeng_real l; mixeng_real r; }; 31 #else 32 struct mixeng_volume { int mute; int64_t r; int64_t l; }; 33 struct st_sample { int64_t l; int64_t r; }; 34 #endif 35 36 typedef void (t_sample) (struct st_sample *dst, const void *src, int samples); 37 typedef void (f_sample) (void *dst, const struct st_sample *src, int samples); 38 39 extern t_sample *mixeng_conv[2][2][2][3]; 40 extern f_sample *mixeng_clip[2][2][2][3]; 41 42 void *st_rate_start (int inrate, int outrate); 43 void st_rate_flow (void *opaque, struct st_sample *ibuf, struct st_sample *obuf, 44 int *isamp, int *osamp); 45 void st_rate_flow_mix (void *opaque, struct st_sample *ibuf, struct st_sample *obuf, 46 int *isamp, int *osamp); 47 void st_rate_stop (void *opaque); 48 void mixeng_clear (struct st_sample *buf, int len); 49 void mixeng_volume (struct st_sample *buf, int len, struct mixeng_volume *vol); 50 51 #endif /* mixeng.h */ 52