summaryrefslogtreecommitdiff
path: root/src/device.c
blob: 6189de108b6400ef255830c250aa194359414d50 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
/* Camicro - Microscope camera viewer.
 *
 * Copyright (C) 2019 Nicolas Schodet
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 * Contact :
 *        Web: http://ni.fr.eu.org/
 *      Email: <nico at ni.fr.eu.org>
 */
#include "device.h"

#include "moticam.h"
#include "dummy.h"

static const struct device_driver *drivers[] = {
    &moticam_device_driver,
    &dummy_device_driver,
    NULL
};

GQuark
device_error_quark(void)
{
    return g_quark_from_static_string("device-error-quark");
}

struct device *
device_open(libusb_context *usb, GError **error)
{
    g_return_val_if_fail(error == NULL || *error == NULL, NULL);
    libusb_device **list;
    libusb_device *found_usb_device = NULL;
    char *found_device_name = NULL;
    const struct device_driver *found_device_driver = NULL;
    ssize_t cnt = libusb_get_device_list(usb, &list);
    if (cnt < 0) {
	g_set_error(error, DEVICE_ERROR, DEVICE_ERROR_LIST,
		"can not list devices: %s", libusb_strerror(cnt));
	return NULL;
    }
    for (ssize_t i = 0; !found_usb_device && i < cnt; i++) {
	libusb_device *usb_device = list[i];
	struct libusb_device_descriptor desc;
	int r = libusb_get_device_descriptor(usb_device, &desc);
	if (r) {
	    g_warning("can not get device descriptor: %s",
		    libusb_strerror(r));
	} else {
	    for (const struct device_driver **dd = drivers;
		    !found_usb_device && *dd; dd++) {
		if ((*dd)->usb_poll) {
		    char *device_name = (*dd)->usb_poll(&desc);
		    if (device_name) {
			found_usb_device = usb_device;
			found_device_name = device_name;
			found_device_driver = *dd;
		    }
		}
	    }
	}
    }
    struct device *device = NULL;
    if (found_usb_device) {
	g_free(found_device_name);
	device = found_device_driver->usb_open(usb, found_usb_device, error);
    } else {
	for (const struct device_driver **dd = drivers;
		!found_device_name && *dd; dd++) {
	    if ((*dd)->poll) {
		char *device_name = (*dd)->poll();
		if (device_name) {
		    found_device_name = device_name;
		    found_device_driver = *dd;
		}
	    }
	}
	if (found_device_name) {
	    g_free(found_device_name);
	    device = found_device_driver->open(error);
	} else {
	    g_set_error(error, DEVICE_ERROR, DEVICE_ERROR_LIST,
		    "no device found");
	}
    }
    libusb_free_device_list(list, 1);
    return device;
}

const struct device_info *
device_get_info(struct device *device)
{
    return device->get_info(device);
}

void
device_set_exposure(struct device *device, double exposure_ms)
{
    device->set_exposure(device, exposure_ms);
}

void
device_set_gain(struct device *device, double gain)
{
    device->set_gain(device, gain);
}

void
device_set_resolution(struct device *device, int width, int height,
	int stride)
{
    device->set_resolution(device, width, height, stride);
}

bool
device_start(struct device *device, GError **error)
{
    g_return_val_if_fail(error == NULL || *error == NULL, false);
    return device->start(device, error);
}

struct image *
device_read(struct device *device, GError **error)
{
    g_return_val_if_fail(error == NULL || *error == NULL, false);
    return device->read(device, error);
}

bool
device_stop(struct device *device, GError **error)
{
    g_return_val_if_fail(error == NULL || *error == NULL, false);
    return device->stop(device, error);
}

bool
device_close(struct device *device, GError **error)
{
    g_return_val_if_fail(error == NULL || *error == NULL, false);
    return device->close(device, error);
}