2 * This file is part of the libsigrok project.
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>
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.
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.
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
23 #ifndef LIBSIGROK_HARDWARE_ALSA_PROTOCOL_H
24 #define LIBSIGROK_HARDWARE_ALSA_PROTOCOL_H
27 #include <alsa/asoundlib.h>
28 #include "libsigrok.h"
29 #include "libsigrok-internal.h"
31 /* Message logging helpers with subsystem-specific prefix string. */
32 #define LOG_PREFIX "alsa: "
33 #define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args)
34 #define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args)
35 #define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args)
36 #define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args)
37 #define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
38 #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
40 /** Private, per-device-instance driver context. */
42 uint64_t cur_samplerate;
43 uint64_t limit_samples;
46 uint64_t *samplerates;
48 snd_pcm_t *capture_handle;
49 snd_pcm_hw_params_t *hw_params;
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);
57 SR_PRIV int alsa_set_samplerate(const struct sr_dev_inst *sdi,
60 SR_PRIV int alsa_receive_data(int fd, int revents, void *cb_data);