Bhalchandra Gajare | e7c627d | 2019-06-19 15:30:42 -0700 | [diff] [blame] | 1 | /* mixer_io.h |
| 2 | ** Copyright (c) 2019, The Linux Foundation. |
| 3 | ** |
| 4 | ** Redistribution and use in source and binary forms, with or without |
| 5 | ** modification, are permitted provided that the following conditions are |
| 6 | ** met: |
| 7 | ** * Redistributions of source code must retain the above copyright |
| 8 | ** notice, this list of conditions and the following disclaimer. |
| 9 | ** * Redistributions in binary form must reproduce the above |
| 10 | ** copyright notice, this list of conditions and the following |
| 11 | ** disclaimer in the documentation and/or other materials provided |
| 12 | ** with the distribution. |
| 13 | ** * Neither the name of The Linux Foundation nor the names of its |
| 14 | ** contributors may be used to endorse or promote products derived |
| 15 | ** from this software without specific prior written permission. |
| 16 | ** |
| 17 | ** THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 18 | ** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 19 | ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 20 | ** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 21 | ** BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 22 | ** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 23 | ** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 24 | ** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 25 | ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 26 | ** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 27 | ** IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | **/ |
| 29 | |
| 30 | #ifndef TINYALSA_SRC_MIXER_H |
| 31 | #define TINYALSA_SRC_MIXER_H |
| 32 | |
| 33 | #include <stdio.h> |
| 34 | #include <stdlib.h> |
| 35 | #include <sound/asound.h> |
| 36 | |
| 37 | struct mixer_ops; |
| 38 | |
| 39 | int mixer_hw_open(unsigned int card, void **data, |
| 40 | const struct mixer_ops **ops); |
| 41 | int mixer_plugin_open(unsigned int card, void **data, |
| 42 | const struct mixer_ops **ops); |
| 43 | |
| 44 | struct mixer_ops { |
| 45 | void (*close) (void *data); |
| 46 | int (*get_poll_fd) (void *data, struct pollfd *pfd, int count); |
| 47 | ssize_t (*read_event) (void *data, struct snd_ctl_event *ev, size_t size); |
| 48 | int (*ioctl) (void *data, unsigned int cmd, ...); |
| 49 | }; |
| 50 | |
| 51 | #endif /* TINYALSA_SRC_MIXER_H */ |