1*d0c94b83SXin Li /* snd_utils.h 2*d0c94b83SXin Li ** 3*d0c94b83SXin Li ** Copyright (c) 2019, The Linux Foundation. All rights reserved. 4*d0c94b83SXin Li ** 5*d0c94b83SXin Li ** Redistribution and use in source and binary forms, with or without 6*d0c94b83SXin Li ** modification, are permitted provided that the following conditions are 7*d0c94b83SXin Li ** met: 8*d0c94b83SXin Li ** * Redistributions of source code must retain the above copyright 9*d0c94b83SXin Li ** notice, this list of conditions and the following disclaimer. 10*d0c94b83SXin Li ** * Redistributions in binary form must reproduce the above 11*d0c94b83SXin Li ** copyright notice, this list of conditions and the following 12*d0c94b83SXin Li ** disclaimer in the documentation and/or other materials provided 13*d0c94b83SXin Li ** with the distribution. 14*d0c94b83SXin Li ** * Neither the name of The Linux Foundation nor the names of its 15*d0c94b83SXin Li ** contributors may be used to endorse or promote products derived 16*d0c94b83SXin Li ** from this software without specific prior written permission. 17*d0c94b83SXin Li ** 18*d0c94b83SXin Li ** THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 19*d0c94b83SXin Li ** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 20*d0c94b83SXin Li ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 21*d0c94b83SXin Li ** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 22*d0c94b83SXin Li ** BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23*d0c94b83SXin Li ** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24*d0c94b83SXin Li ** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 25*d0c94b83SXin Li ** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 26*d0c94b83SXin Li ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 27*d0c94b83SXin Li ** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 28*d0c94b83SXin Li ** IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29*d0c94b83SXin Li **/ 30*d0c94b83SXin Li 31*d0c94b83SXin Li #ifndef __SND_CARD_UTILS_H__ 32*d0c94b83SXin Li #define __SND_CARD_UTILS_H__ 33*d0c94b83SXin Li 34*d0c94b83SXin Li #include <dlfcn.h> 35*d0c94b83SXin Li 36*d0c94b83SXin Li struct snd_node { 37*d0c94b83SXin Li void *card_node; 38*d0c94b83SXin Li void *dev_node; 39*d0c94b83SXin Li void *dl_hdl; 40*d0c94b83SXin Li 41*d0c94b83SXin Li void* (*get_card) (unsigned int card); 42*d0c94b83SXin Li void (*put_card) (void *card); 43*d0c94b83SXin Li void* (*get_node) (void *card, unsigned int id, 44*d0c94b83SXin Li int type); 45*d0c94b83SXin Li int (*get_int) (void *node, const char *prop, int *val); 46*d0c94b83SXin Li int (*get_str) (void *node, const char *prop, char **val); 47*d0c94b83SXin Li }; 48*d0c94b83SXin Li 49*d0c94b83SXin Li enum { 50*d0c94b83SXin Li NODE_PCM, 51*d0c94b83SXin Li NODE_MIXER, 52*d0c94b83SXin Li }; 53*d0c94b83SXin Li 54*d0c94b83SXin Li enum snd_node_type { 55*d0c94b83SXin Li SND_NODE_TYPE_HW = 0, 56*d0c94b83SXin Li SND_NODE_TYPE_PLUGIN, 57*d0c94b83SXin Li SND_NODE_TYPE_INVALID, 58*d0c94b83SXin Li }; 59*d0c94b83SXin Li 60*d0c94b83SXin Li struct snd_node *snd_utils_get_dev_node(unsigned int card, 61*d0c94b83SXin Li unsigned int device, int dev_type); 62*d0c94b83SXin Li 63*d0c94b83SXin Li void snd_utils_put_dev_node(struct snd_node *node); 64*d0c94b83SXin Li 65*d0c94b83SXin Li enum snd_node_type snd_utils_get_node_type(struct snd_node *node); 66*d0c94b83SXin Li 67*d0c94b83SXin Li int snd_utils_get_int(struct snd_node *node, const char *prop, int *val); 68*d0c94b83SXin Li 69*d0c94b83SXin Li int snd_utils_get_str(struct snd_node *node, const char *prop, char **val); 70*d0c94b83SXin Li 71*d0c94b83SXin Li #endif /* end of __SND_CARD_UTILS_H__ */ 72