1*02e95f1aSMarcin Radomski /* mixer_io.h 2*02e95f1aSMarcin Radomski ** Copyright (c) 2019, The Linux Foundation. 3*02e95f1aSMarcin Radomski ** 4*02e95f1aSMarcin Radomski ** Redistribution and use in source and binary forms, with or without 5*02e95f1aSMarcin Radomski ** modification, are permitted provided that the following conditions are 6*02e95f1aSMarcin Radomski ** met: 7*02e95f1aSMarcin Radomski ** * Redistributions of source code must retain the above copyright 8*02e95f1aSMarcin Radomski ** notice, this list of conditions and the following disclaimer. 9*02e95f1aSMarcin Radomski ** * Redistributions in binary form must reproduce the above 10*02e95f1aSMarcin Radomski ** copyright notice, this list of conditions and the following 11*02e95f1aSMarcin Radomski ** disclaimer in the documentation and/or other materials provided 12*02e95f1aSMarcin Radomski ** with the distribution. 13*02e95f1aSMarcin Radomski ** * Neither the name of The Linux Foundation nor the names of its 14*02e95f1aSMarcin Radomski ** contributors may be used to endorse or promote products derived 15*02e95f1aSMarcin Radomski ** from this software without specific prior written permission. 16*02e95f1aSMarcin Radomski ** 17*02e95f1aSMarcin Radomski ** THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18*02e95f1aSMarcin Radomski ** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19*02e95f1aSMarcin Radomski ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20*02e95f1aSMarcin Radomski ** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21*02e95f1aSMarcin Radomski ** BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22*02e95f1aSMarcin Radomski ** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23*02e95f1aSMarcin Radomski ** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24*02e95f1aSMarcin Radomski ** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25*02e95f1aSMarcin Radomski ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26*02e95f1aSMarcin Radomski ** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27*02e95f1aSMarcin Radomski ** IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28*02e95f1aSMarcin Radomski **/ 29*02e95f1aSMarcin Radomski 30*02e95f1aSMarcin Radomski #ifndef TINYALSA_SRC_MIXER_H 31*02e95f1aSMarcin Radomski #define TINYALSA_SRC_MIXER_H 32*02e95f1aSMarcin Radomski 33*02e95f1aSMarcin Radomski #include <stdio.h> 34*02e95f1aSMarcin Radomski #include <stdlib.h> 35*02e95f1aSMarcin Radomski #include <sound/asound.h> 36*02e95f1aSMarcin Radomski 37*02e95f1aSMarcin Radomski struct mixer_ops; 38*02e95f1aSMarcin Radomski 39*02e95f1aSMarcin Radomski int mixer_hw_open(unsigned int card, void **data, 40*02e95f1aSMarcin Radomski const struct mixer_ops **ops); 41*02e95f1aSMarcin Radomski int mixer_plugin_open(unsigned int card, void **data, 42*02e95f1aSMarcin Radomski const struct mixer_ops **ops); 43*02e95f1aSMarcin Radomski 44*02e95f1aSMarcin Radomski struct mixer_ops { 45*02e95f1aSMarcin Radomski void (*close) (void *data); 46*02e95f1aSMarcin Radomski int (*get_poll_fd) (void *data, struct pollfd *pfd, int count); 47*02e95f1aSMarcin Radomski ssize_t (*read_event) (void *data, struct snd_ctl_event *ev, size_t size); 48*02e95f1aSMarcin Radomski int (*ioctl) (void *data, unsigned int cmd, ...); 49*02e95f1aSMarcin Radomski }; 50*02e95f1aSMarcin Radomski 51*02e95f1aSMarcin Radomski #endif /* TINYALSA_SRC_MIXER_H */ 52