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Diffstat (limited to 'src/mixer_io.h')
-rw-r--r-- | src/mixer_io.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/mixer_io.h b/src/mixer_io.h new file mode 100644 index 0000000..bb3bc44 --- /dev/null +++ b/src/mixer_io.h @@ -0,0 +1,51 @@ +/* mixer_io.h +** Copyright (c) 2019, The Linux Foundation. +** +** Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above +** copyright notice, this list of conditions and the following +** disclaimer in the documentation and/or other materials provided +** with the distribution. +** * Neither the name of The Linux Foundation nor the names of its +** contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED +** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT +** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS +** BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR +** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, +** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE +** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN +** IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +**/ + +#ifndef TINYALSA_SRC_MIXER_H +#define TINYALSA_SRC_MIXER_H + +#include <stdio.h> +#include <stdlib.h> +#include <sound/asound.h> + +struct mixer_ops; + +int mixer_hw_open(unsigned int card, void **data, + const struct mixer_ops **ops); +int mixer_plugin_open(unsigned int card, void **data, + const struct mixer_ops **ops); + +struct mixer_ops { + void (*close) (void *data); + int (*get_poll_fd) (void *data, struct pollfd *pfd, int count); + ssize_t (*read_event) (void *data, struct snd_ctl_event *ev, size_t size); + int (*ioctl) (void *data, unsigned int cmd, ...); +}; + +#endif /* TINYALSA_SRC_MIXER_H */ |