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Diffstat (limited to 'snd_utils.h')
-rw-r--r-- | snd_utils.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/snd_utils.h b/snd_utils.h new file mode 100644 index 0000000..d00f7f2 --- /dev/null +++ b/snd_utils.h @@ -0,0 +1,72 @@ +/* snd_utils.h +** +** Copyright (c) 2019, The Linux Foundation. All rights reserved. +** +** 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 __SND_CARD_UTILS_H__ +#define __SND_CARD_UTILS_H__ + +#include <dlfcn.h> + +struct snd_node { + void *card_node; + void *dev_node; + void *dl_hdl; + + void* (*get_card) (unsigned int card); + void (*put_card) (void *card); + void* (*get_node) (void *card, unsigned int id, + int type); + int (*get_int) (void *node, const char *prop, int *val); + int (*get_str) (void *node, const char *prop, char **val); +}; + +enum { + NODE_PCM, + NODE_MIXER, + NODE_COMPRESS, +}; + +enum snd_node_type { + SND_NODE_TYPE_HW = 0, + SND_NODE_TYPE_PLUGIN, + SND_NODE_TYPE_INVALID, +}; + +struct snd_node *snd_utils_get_dev_node(unsigned int card, + unsigned int device, int dev_type); + +void snd_utils_put_dev_node(struct snd_node *node); + +enum snd_node_type snd_utils_get_node_type(struct snd_node *node); + +int snd_utils_get_int(struct snd_node *node, const char *prop, int *val); + +int snd_utils_get_str(struct snd_node *node, const char *prop, char **val); + +#endif /* end of __SND_CARD_UTILS_H__ */ |