1 /* GStreamer Raspberry Pi Camera Source Device Provider
2 * Copyright (C) 2014 Tim-Philipp Müller <tim@centricular.com>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 */
19
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include "gstrpicamsrcdeviceprovider.h"
25
26 #include <string.h>
27
28 #include "RaspiCapture.h"
29
30 #include <gst/gst-i18n-plugin.h>
31
32 static GstRpiCamSrcDevice *gst_rpi_cam_src_device_new (void);
33
34 G_DEFINE_TYPE (GstRpiCamSrcDeviceProvider, gst_rpi_cam_src_device_provider,
35 GST_TYPE_DEVICE_PROVIDER);
36
37
38 static GList *gst_rpi_cam_src_device_provider_probe (GstDeviceProvider *
39 provider);
40
41 static void
gst_rpi_cam_src_device_provider_class_init(GstRpiCamSrcDeviceProviderClass * klass)42 gst_rpi_cam_src_device_provider_class_init (GstRpiCamSrcDeviceProviderClass *
43 klass)
44 {
45 GstDeviceProviderClass *dprovider_class = GST_DEVICE_PROVIDER_CLASS (klass);
46
47 dprovider_class->probe = gst_rpi_cam_src_device_provider_probe;
48
49 gst_device_provider_class_set_static_metadata (dprovider_class,
50 "Raspberry Pi Camera Source Device Provider", "Source/Video",
51 "Lists Raspberry Pi camera devices",
52 "Tim-Philipp Müller <tim@centricular.com>");
53 }
54
55 static void
gst_rpi_cam_src_device_provider_init(GstRpiCamSrcDeviceProvider * provider)56 gst_rpi_cam_src_device_provider_init (GstRpiCamSrcDeviceProvider * provider)
57 {
58 raspicapture_init ();
59 }
60
61 static GList *
gst_rpi_cam_src_device_provider_probe(GstDeviceProvider * provider)62 gst_rpi_cam_src_device_provider_probe (GstDeviceProvider * provider)
63 {
64 GstRpiCamSrcDevice *device;
65 int supported = 0, detected = 0;
66
67 raspicamcontrol_get_camera (&supported, &detected);
68
69 if (!detected) {
70 GST_INFO ("No Raspberry Pi camera module detected.");
71 return NULL;
72 } else if (!supported) {
73 GST_WARNING
74 ("Raspberry Pi camera module not supported, make sure to enable it.");
75 return NULL;
76 }
77
78 GST_INFO ("Raspberry Pi camera module detected and supported.");
79
80 device = gst_rpi_cam_src_device_new ();
81
82 return g_list_append (NULL, device);
83 }
84
85 G_DEFINE_TYPE (GstRpiCamSrcDevice, gst_rpi_cam_src_device, GST_TYPE_DEVICE);
86
87 static GstElement *gst_rpi_cam_src_device_create_element (GstDevice * device,
88 const gchar * name);
89
90 static void
gst_rpi_cam_src_device_class_init(GstRpiCamSrcDeviceClass * klass)91 gst_rpi_cam_src_device_class_init (GstRpiCamSrcDeviceClass * klass)
92 {
93 GstDeviceClass *device_class = GST_DEVICE_CLASS (klass);
94
95 device_class->create_element = gst_rpi_cam_src_device_create_element;
96 }
97
98 static void
gst_rpi_cam_src_device_init(GstRpiCamSrcDevice * device)99 gst_rpi_cam_src_device_init (GstRpiCamSrcDevice * device)
100 {
101 /* nothing to do here */
102 }
103
104 static GstElement *
gst_rpi_cam_src_device_create_element(GstDevice * device,const gchar * name)105 gst_rpi_cam_src_device_create_element (GstDevice * device, const gchar * name)
106 {
107 return gst_element_factory_make ("rpicamsrc", name);
108 }
109
110 static GstRpiCamSrcDevice *
gst_rpi_cam_src_device_new(void)111 gst_rpi_cam_src_device_new (void)
112 {
113 GstRpiCamSrcDevice *device;
114 GValue profiles = G_VALUE_INIT;
115 GValue val = G_VALUE_INIT;
116 GstStructure *s, *jpeg_s;
117 GstCaps *caps;
118
119 /* FIXME: retrieve limits from the camera module, max width/height/fps etc. */
120 s = gst_structure_new ("video/x-h264",
121 "width", GST_TYPE_INT_RANGE, 1, 1920,
122 "height", GST_TYPE_INT_RANGE, 1, 1080,
123 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, RPICAMSRC_MAX_FPS, 1,
124 "stream-format", G_TYPE_STRING, "byte-stream",
125 "alignment", G_TYPE_STRING, "au", NULL);
126
127 g_value_init (&profiles, GST_TYPE_LIST);
128 g_value_init (&val, G_TYPE_STRING);
129 g_value_set_static_string (&val, "high");
130 gst_value_list_append_value (&profiles, &val);
131 g_value_set_static_string (&val, "main");
132 gst_value_list_append_value (&profiles, &val);
133 g_value_set_static_string (&val, "constrained-baseline");
134 gst_value_list_append_value (&profiles, &val);
135 g_value_set_static_string (&val, "baseline");
136 gst_value_list_append_and_take_value (&profiles, &val);
137 gst_structure_take_value (s, "profiles", &profiles);
138
139 jpeg_s = gst_structure_new ("image/jpeg",
140 "width", GST_TYPE_INT_RANGE, 1, 1920,
141 "height", GST_TYPE_INT_RANGE, 1, 1080,
142 "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, RPICAMSRC_MAX_FPS, 1,
143 "parsed", G_TYPE_BOOLEAN, "true", NULL);
144
145 caps = gst_caps_new_full (s, jpeg_s, NULL);
146
147 device = g_object_new (GST_TYPE_RPICAMSRC_DEVICE,
148 "display-name", _("Raspberry Pi Camera Module"),
149 "device-class", "Video/Source", "caps", caps, NULL);
150
151 gst_caps_unref (caps);
152
153 return device;
154 }
155