1 /* 2 * Copyright © 2017 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 * 23 * Authors: 24 * Paul Kocialkowski <paul.kocialkowski@linux.intel.com> 25 */ 26 27 #ifndef IGT_ALSA_H 28 #define IGT_ALSA_H 29 30 #include "config.h" 31 32 #include <alsa/asoundlib.h> 33 #include <stdbool.h> 34 35 struct alsa; 36 37 bool alsa_has_exclusive_access(void); 38 struct alsa *alsa_init(void); 39 int alsa_open_output(struct alsa *alsa, const char *device_name); 40 void alsa_close_output(struct alsa *alsa); 41 bool alsa_test_output_configuration(struct alsa *alsa, snd_pcm_format_t dmt, 42 int channels, int sampling_rate); 43 void alsa_configure_output(struct alsa *alsa, snd_pcm_format_t fmt, 44 int channels, int sampling_rate); 45 void alsa_register_output_callback(struct alsa *alsa, 46 int (*callback)(void *data, void *buffer, int samples), 47 void *callback_data, int samples_trigger); 48 int alsa_run(struct alsa *alsa, int duration_ms); 49 50 #endif 51