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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2011 Daniel Ribeiro <drwyrm@gmail.com> | |
5 | * Copyright (C) 2012 Uwe Hermann <uwe@hermann-uwe.de> | |
6 | * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | #ifndef LIBSIGROK_HARDWARE_ALSA_PROTOCOL_H | |
24 | #define LIBSIGROK_HARDWARE_ALSA_PROTOCOL_H | |
25 | ||
26 | #include <stdint.h> | |
27 | #include <alsa/asoundlib.h> | |
28 | #include "libsigrok.h" | |
29 | #include "libsigrok-internal.h" | |
30 | ||
31 | #define LOG_PREFIX "alsa" | |
32 | ||
33 | /** Private, per-device-instance driver context. */ | |
34 | struct dev_context { | |
35 | uint64_t cur_samplerate; | |
36 | uint64_t limit_samples; | |
37 | uint64_t num_samples; | |
38 | uint8_t num_probes; | |
39 | uint64_t *samplerates; | |
40 | char *hwdev; | |
41 | snd_pcm_t *capture_handle; | |
42 | snd_pcm_hw_params_t *hw_params; | |
43 | struct pollfd *ufds; | |
44 | void *cb_data; | |
45 | }; | |
46 | ||
47 | SR_PRIV GSList *alsa_scan(GSList *options, struct sr_dev_driver *di); | |
48 | SR_PRIV int alsa_set_samplerate(const struct sr_dev_inst *sdi, | |
49 | uint64_t newrate); | |
50 | SR_PRIV int alsa_receive_data(int fd, int revents, void *cb_data); | |
51 | ||
52 | #endif |