From e02cda008591317b1625707ff8e115a4841aa889 Mon Sep 17 00:00:00 2001 From: Timos Ampelikiotis Date: Tue, 10 Oct 2023 11:40:56 +0000 Subject: Introduce Virtio-loopback epsilon release: Epsilon release introduces a new compatibility layer which make virtio-loopback design to work with QEMU and rust-vmm vhost-user backend without require any changes. Signed-off-by: Timos Ampelikiotis Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9 --- audio/mixeng.h | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 audio/mixeng.h (limited to 'audio/mixeng.h') diff --git a/audio/mixeng.h b/audio/mixeng.h new file mode 100644 index 000000000..2dcd6df24 --- /dev/null +++ b/audio/mixeng.h @@ -0,0 +1,58 @@ +/* + * QEMU Mixing engine header + * + * Copyright (c) 2004-2005 Vassili Karpov (malc) + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef QEMU_MIXENG_H +#define QEMU_MIXENG_H + +#ifdef FLOAT_MIXENG +typedef float mixeng_real; +struct mixeng_volume { int mute; mixeng_real r; mixeng_real l; }; +struct st_sample { mixeng_real l; mixeng_real r; }; +#else +struct mixeng_volume { int mute; int64_t r; int64_t l; }; +struct st_sample { int64_t l; int64_t r; }; +#endif +typedef struct st_sample st_sample; + +typedef void (t_sample) (struct st_sample *dst, const void *src, int samples); +typedef void (f_sample) (void *dst, const struct st_sample *src, int samples); + +/* indices: [stereo][signed][swap endiannes][8, 16 or 32-bits] */ +extern t_sample *mixeng_conv[2][2][2][3]; +extern f_sample *mixeng_clip[2][2][2][3]; + +/* indices: [stereo] */ +extern t_sample *mixeng_conv_float[2]; +extern f_sample *mixeng_clip_float[2]; + +void *st_rate_start (int inrate, int outrate); +void st_rate_flow(void *opaque, st_sample *ibuf, st_sample *obuf, + size_t *isamp, size_t *osamp); +void st_rate_flow_mix(void *opaque, st_sample *ibuf, st_sample *obuf, + size_t *isamp, size_t *osamp); +void st_rate_stop (void *opaque); +void mixeng_clear (struct st_sample *buf, int len); +void mixeng_volume (struct st_sample *buf, int len, struct mixeng_volume *vol); + +#endif /* QEMU_MIXENG_H */ -- cgit