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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 | /* Message logging helpers with driver-specific prefix string. */ | |
32 | #define DRIVER_LOG_DOMAIN "alsa: " | |
33 | #define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args) | |
34 | #define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args) | |
35 | #define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args) | |
36 | #define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args) | |
37 | #define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args) | |
38 | #define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args) | |
39 | ||
40 | /** Private, per-device-instance driver context. */ | |
41 | struct dev_context { | |
42 | uint64_t cur_samplerate; | |
43 | uint64_t limit_samples; | |
44 | uint64_t num_samples; | |
45 | uint8_t num_probes; | |
46 | struct sr_samplerates supp_rates; | |
47 | char *hwdev; | |
48 | snd_pcm_t *capture_handle; | |
49 | snd_pcm_hw_params_t *hw_params; | |
50 | struct pollfd *ufds; | |
51 | void *cb_data; | |
52 | }; | |
53 | ||
54 | SR_PRIV GSList *alsa_scan(GSList *options, struct sr_dev_driver *di); | |
55 | SR_PRIV void alsa_dev_inst_clear(struct sr_dev_inst *sdi); | |
56 | ||
57 | SR_PRIV int alsa_set_samplerate(const struct sr_dev_inst *sdi, | |
58 | uint64_t newrate); | |
59 | ||
60 | SR_PRIV int alsa_receive_data(int fd, int revents, void *cb_data); | |
61 | ||
62 | #endif |