diff options
| -rw-r--r-- | libempathy/Makefile.am | 9 | ||||
| -rw-r--r-- | libempathy/cheese-camera-device-monitor.c | 412 | ||||
| -rw-r--r-- | libempathy/cheese-camera-device-monitor.h | 67 |
3 files changed, 485 insertions, 3 deletions
diff --git a/libempathy/Makefile.am b/libempathy/Makefile.am index 571980dd8..40a7c0379 100644 --- a/libempathy/Makefile.am +++ b/libempathy/Makefile.am @@ -66,7 +66,7 @@ libempathy_headers = \ empathy-types.h \ empathy-utils.h -libempathy_la_SOURCES = \ +libempathy_handwritten_source = \ $(libempathy_headers) \ action-chain.c \ empathy-account-settings.c \ @@ -105,6 +105,10 @@ libempathy_la_SOURCES = \ empathy-tp-streamed-media.c \ empathy-utils.c +libempathy_la_SOURCES = \ + $(libempathy_handwritten_source) \ + cheese-camera-device-monitor.c cheese-camera-device-monitor.h + # do not distribute generated files nodist_libempathy_la_SOURCES =\ $(BUILT_SOURCES) @@ -118,8 +122,7 @@ libempathy_la_LIBADD = \ $(CONNMAN_LIBS) check_c_sources = \ - $(libempathy_la_SOURCES) \ - $(libempathy_headers) + $(libempathy_handwritten_source) include $(top_srcdir)/tools/check-coding-style.mk check-local: check-coding-style diff --git a/libempathy/cheese-camera-device-monitor.c b/libempathy/cheese-camera-device-monitor.c new file mode 100644 index 000000000..85c6a0aa4 --- /dev/null +++ b/libempathy/cheese-camera-device-monitor.c @@ -0,0 +1,412 @@ +/* + * Copyright © 2007,2008 Jaap Haitsma <jaap@haitsma.org> + * Copyright © 2007-2009 daniel g. siegel <dgsiegel@gnome.org> + * Copyright © 2008 Ryan Zeigler <zeiglerr@gmail.com> + * Copyright © 2010 Filippo Argiolas <filippo.argiolas@gmail.com> + * + * Licensed under the GNU General Public License Version 2 + * + * 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, see <http://www.gnu.org/licenses/>. + */ +#ifdef HAVE_CONFIG_H + #include <config.h> +#endif + +#include <glib-object.h> +#include <string.h> + +#ifdef HAVE_UDEV + #define G_UDEV_API_IS_SUBJECT_TO_CHANGE 1 + #include <gudev/gudev.h> +#else + #include <fcntl.h> + #include <unistd.h> + #include <sys/ioctl.h> + #if USE_SYS_VIDEOIO_H > 0 + #include <sys/types.h> + #include <sys/videoio.h> + #elif defined (__sun) + #include <sys/types.h> + #include <sys/videodev2.h> + #endif /* USE_SYS_VIDEOIO_H */ +#endif + +#include "cheese-camera-device-monitor.h" +#include "empathy-marshal.h" + +/** + * SECTION:cheese-camera-device-monitor + * @short_description: Simple object to enumerate v4l devices + * @include: cheese/cheese-camera-device-monitor.h + * + * #CheeseCameraDeviceMonitor provides a basic interface for + * video4linux device enumeration and hotplugging. + * + * It uses either GUdev or some platform specific code to list video + * devices. It is also capable (right now in linux only, with the + * udev backend) to monitor device plugging and emit a + * CheeseCameraDeviceMonitor::added or + * CheeseCameraDeviceMonitor::removed signal when an event happens. + */ + +G_DEFINE_TYPE (CheeseCameraDeviceMonitor, cheese_camera_device_monitor, G_TYPE_OBJECT) + +#define CHEESE_CAMERA_DEVICE_MONITOR_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), \ + CHEESE_TYPE_CAMERA_DEVICE_MONITOR, \ + CheeseCameraDeviceMonitorPrivate)) + +#define CHEESE_CAMERA_DEVICE_MONITOR_ERROR cheese_camera_device_monitor_error_quark () + +GST_DEBUG_CATEGORY (cheese_device_monitor_cat); +#define GST_CAT_DEFAULT cheese_device_monitor_cat + +enum CheeseCameraDeviceMonitorError +{ + CHEESE_CAMERA_DEVICE_MONITOR_ERROR_UNKNOWN, + CHEESE_CAMERA_DEVICE_MONITOR_ERROR_ELEMENT_NOT_FOUND +}; + +typedef struct +{ +#ifdef HAVE_UDEV + GUdevClient *client; +#else + guint filler; +#endif /* HAVE_UDEV */ +} CheeseCameraDeviceMonitorPrivate; + +enum +{ + ADDED, + REMOVED, + LAST_SIGNAL +}; + +static guint monitor_signals[LAST_SIGNAL]; + +#if 0 +GQuark +cheese_camera_device_monitor_error_quark (void) +{ + return g_quark_from_static_string ("cheese-camera-error-quark"); +} +#endif + +#ifdef HAVE_UDEV +static void +cheese_camera_device_monitor_added (CheeseCameraDeviceMonitor *monitor, + GUdevDevice *udevice) +{ + const char *device_file; + const char *product_name; + const char *vendor; + const char *product; + const char *bus; + gint vendor_id = 0; + gint product_id = 0; + gint v4l_version = 0; + + const gchar *devpath = g_udev_device_get_property (udevice, "DEVPATH"); + + GST_INFO ("Checking udev device '%s'", devpath); + + bus = g_udev_device_get_property (udevice, "ID_BUS"); + if (g_strcmp0 (bus, "usb") == 0) + { + vendor = g_udev_device_get_property (udevice, "ID_VENDOR_ID"); + if (vendor != NULL) + vendor_id = g_ascii_strtoll (vendor, NULL, 16); + product = g_udev_device_get_property (udevice, "ID_MODEL_ID"); + if (product != NULL) + product_id = g_ascii_strtoll (product, NULL, 16); + if (vendor_id == 0 || product_id == 0) + { + GST_WARNING ("Error getting vendor and product id"); + } + else + { + GST_INFO ("Found device %04x:%04x, getting capabilities...", vendor_id, product_id); + } + } + else + { + GST_INFO ("Not an usb device, skipping vendor and model id retrieval"); + } + + device_file = g_udev_device_get_device_file (udevice); + if (device_file == NULL) + { + GST_WARNING ("Error getting V4L device"); + return; + } + + /* vbi devices support capture capability too, but cannot be used, + * so detect them by device name */ + if (strstr (device_file, "vbi")) + { + GST_INFO ("Skipping vbi device: %s", device_file); + return; + } + + v4l_version = g_udev_device_get_property_as_int (udevice, "ID_V4L_VERSION"); + if (v4l_version == 2 || v4l_version == 1) + { + const char *caps; + + caps = g_udev_device_get_property (udevice, "ID_V4L_CAPABILITIES"); + if (caps == NULL || strstr (caps, ":capture:") == NULL) + { + GST_WARNING ("Device %s seems to not have the capture capability, (radio tuner?)" + "Removing it from device list.", device_file); + return; + } + product_name = g_udev_device_get_property (udevice, "ID_V4L_PRODUCT"); + } + else if (v4l_version == 0) + { + GST_ERROR ("Fix your udev installation to include v4l_id, ignoring %s", device_file); + return; + } + else + { + g_assert_not_reached (); + } + + g_signal_emit (monitor, monitor_signals[ADDED], 0, + devpath, + device_file, + product_name, + v4l_version); +} + +static void +cheese_camera_device_monitor_removed (CheeseCameraDeviceMonitor *monitor, + GUdevDevice *udevice) +{ + g_signal_emit (monitor, monitor_signals[REMOVED], 0, + g_udev_device_get_property (udevice, "DEVPATH")); +} + +static void +cheese_camera_device_monitor_uevent_cb (GUdevClient *client, + const gchar *action, + GUdevDevice *udevice, + CheeseCameraDeviceMonitor *monitor) +{ + if (g_str_equal (action, "remove")) + cheese_camera_device_monitor_removed (monitor, udevice); + else if (g_str_equal (action, "add")) + cheese_camera_device_monitor_added (monitor, udevice); +} + +/** + * cheese_camera_device_monitor_coldplug: + * @monitor: a #CheeseCameraDeviceMonitor object. + * + * Will actively look for plugged in cameras and emit + * ::added for those new cameras. + * This is only required when your program starts, so as to connect + * to those signals before they are emitted. + */ +void +cheese_camera_device_monitor_coldplug (CheeseCameraDeviceMonitor *monitor) +{ + CheeseCameraDeviceMonitorPrivate *priv = CHEESE_CAMERA_DEVICE_MONITOR_GET_PRIVATE (monitor); + GList *devices, *l; + gint i = 0; + + if (priv->client == NULL) + return; + + GST_INFO ("Probing devices with udev..."); + + devices = g_udev_client_query_by_subsystem (priv->client, "video4linux"); + + /* Initialize camera structures */ + for (l = devices; l != NULL; l = l->next) + { + cheese_camera_device_monitor_added (monitor, l->data); + g_object_unref (l->data); + i++; + } + g_list_free (devices); + + if (i == 0) GST_WARNING ("No device found"); +} + +#else /* HAVE_UDEV */ +void +cheese_camera_device_monitor_coldplug (CheeseCameraDeviceMonitor *monitor) +{ + #if 0 + CheeseCameraDeviceMonitorPrivate *priv = CHEESE_CAMERA_DEVICE_MONITOR_GET_PRIVATE (monitor); + struct v4l2_capability v2cap; + struct video_capability v1cap; + int fd, ok; + + if ((fd = open (device_path, O_RDONLY | O_NONBLOCK)) < 0) + { + g_warning ("Failed to open %s: %s", device_path, strerror (errno)); + return; + } + ok = ioctl (fd, VIDIOC_QUERYCAP, &v2cap); + if (ok < 0) + { + ok = ioctl (fd, VIDIOCGCAP, &v1cap); + if (ok < 0) + { + g_warning ("Error while probing v4l capabilities for %s: %s", + device_path, strerror (errno)); + close (fd); + return; + } + g_print ("Detected v4l device: %s\n", v1cap.name); + g_print ("Device type: %d\n", v1cap.type); + gstreamer_src = "v4lsrc"; + product_name = v1cap.name; + } + else + { + guint cap = v2cap.capabilities; + g_print ("Detected v4l2 device: %s\n", v2cap.card); + g_print ("Driver: %s, version: %d\n", v2cap.driver, v2cap.version); + + /* g_print ("Bus info: %s\n", v2cap.bus_info); */ /* Doesn't seem anything useful */ + g_print ("Capabilities: 0x%08X\n", v2cap.capabilities); + if (!(cap & V4L2_CAP_VIDEO_CAPTURE)) + { + g_print ("Device %s seems to not have the capture capability, (radio tuner?)\n" + "Removing it from device list.\n", device_path); + close (fd); + return; + } + gstreamer_src = "v4l2src"; + product_name = (char *) v2cap.card; + } + close (fd); + + GList *devices, *l; + + g_print ("Probing devices with udev...\n"); + + if (priv->client == NULL) + return; + + devices = g_udev_client_query_by_subsystem (priv->client, "video4linux"); + + /* Initialize camera structures */ + for (l = devices; l != NULL; l = l->next) + { + cheese_camera_device_monitor_added (monitor, l->data); + g_object_unref (l->data); + } + g_list_free (devices); + #endif +} + +#endif /* HAVE_UDEV */ + +static void +cheese_camera_device_monitor_finalize (GObject *object) +{ +#ifdef HAVE_UDEV + CheeseCameraDeviceMonitor *monitor = CHEESE_CAMERA_DEVICE_MONITOR (object); + CheeseCameraDeviceMonitorPrivate *priv = CHEESE_CAMERA_DEVICE_MONITOR_GET_PRIVATE (monitor); + + if (priv->client != NULL) + { + g_object_unref (priv->client); + priv->client = NULL; + } +#endif /* HAVE_UDEV */ + G_OBJECT_CLASS (cheese_camera_device_monitor_parent_class)->finalize (object); +} + +static void +cheese_camera_device_monitor_class_init (CheeseCameraDeviceMonitorClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + if (cheese_device_monitor_cat == NULL) + GST_DEBUG_CATEGORY_INIT (cheese_device_monitor_cat, + "cheese-device-monitor", + 0, "Cheese Camera Device Monitor"); + + object_class->finalize = cheese_camera_device_monitor_finalize; + + /** + * CheeseCameraDeviceMonitor::added: + * @device: A private object representing the newly added camera. + * @id: Device unique identifier. + * @device: Device file name (e.g. /dev/video2). + * @product_name: Device product name (human readable, intended to be displayed in a UI). + * @api_version: Supported video4linux API: 1 for v4l, 2 for v4l2. + * + * The ::added signal is emitted when a camera is added, or on start-up + * after #cheese_camera_device_monitor_colplug is called. + **/ + monitor_signals[ADDED] = g_signal_new ("added", G_OBJECT_CLASS_TYPE (klass), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (CheeseCameraDeviceMonitorClass, added), + NULL, NULL, + _empathy_marshal_VOID__STRING_STRING_STRING_INT, + G_TYPE_NONE, 4, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_INT); + + /** + * CheeseCameraDeviceMonitor::removed: + * @device: A private object representing the newly added camera + * @id: Device unique identifier. + * + * The ::removed signal is emitted when a camera is un-plugged, or + * disabled on the system. + **/ + monitor_signals[REMOVED] = g_signal_new ("removed", G_OBJECT_CLASS_TYPE (klass), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (CheeseCameraDeviceMonitorClass, removed), + NULL, NULL, + g_cclosure_marshal_VOID__STRING, + G_TYPE_NONE, 1, G_TYPE_STRING); + + g_type_class_add_private (klass, sizeof (CheeseCameraDeviceMonitorPrivate)); +} + +static void +cheese_camera_device_monitor_init (CheeseCameraDeviceMonitor *monitor) +{ +#ifdef HAVE_UDEV + CheeseCameraDeviceMonitorPrivate *priv = CHEESE_CAMERA_DEVICE_MONITOR_GET_PRIVATE (monitor); + const gchar *const subsystems[] = {"video4linux", NULL}; + + priv->client = g_udev_client_new (subsystems); + g_signal_connect (G_OBJECT (priv->client), "uevent", + G_CALLBACK (cheese_camera_device_monitor_uevent_cb), monitor); +#endif /* HAVE_UDEV */ +} + +/** + * cheese_camera_device_monitor_new: + * + * Returns a new #CheeseCameraDeviceMonitor object. + * + * Return value: a new #CheeseCameraDeviceMonitor object. + **/ +CheeseCameraDeviceMonitor * +cheese_camera_device_monitor_new (void) +{ + return g_object_new (CHEESE_TYPE_CAMERA_DEVICE_MONITOR, NULL); +} + +/* + * vim: sw=2 ts=8 cindent noai bs=2 + */ diff --git a/libempathy/cheese-camera-device-monitor.h b/libempathy/cheese-camera-device-monitor.h new file mode 100644 index 000000000..d0d98a45f --- /dev/null +++ b/libempathy/cheese-camera-device-monitor.h @@ -0,0 +1,67 @@ +/* + * Copyright © 2007,2008 Jaap Haitsma <jaap@haitsma.org> + * Copyright © 2007-2009 daniel g. siegel <dgsiegel@gnome.org> + * Copyright © 2008 Ryan zeigler <zeiglerr@gmail.com> + * + * Licensed under the GNU General Public License Version 2 + * + * 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, see <http://www.gnu.org/licenses/>. + */ + + +#ifndef __CHEESE_CAMERA_DEVICE_MONITOR_H__ +#define __CHEESE_CAMERA_DEVICE_MONITOR_H__ + +#include <glib-object.h> +#include <gst/interfaces/xoverlay.h> + +G_BEGIN_DECLS + +#define CHEESE_TYPE_CAMERA_DEVICE_MONITOR (cheese_camera_device_monitor_get_type ()) +#define CHEESE_CAMERA_DEVICE_MONITOR(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), CHEESE_TYPE_CAMERA_DEVICE_MONITOR, \ + CheeseCameraDeviceMonitor)) +#define CHEESE_CAMERA_DEVICE_MONITOR_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), CHEESE_TYPE_CAMERA_DEVICE_MONITOR, \ + CheeseCameraDeviceMonitorClass)) +#define CHEESE_IS_CAMERA_DEVICE_MONITOR(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), CHEESE_TYPE_CAMERA_DEVICE_MONITOR)) +#define CHEESE_IS_CAMERA_DEVICE_MONITOR_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), CHEESE_TYPE_CAMERA_DEVICE_MONITOR)) +#define CHEESE_CAMERA_DEVICE_MONITOR_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), CHEESE_TYPE_CAMERA_DEVICE_MONITOR, \ + CheeseCameraDeviceMonitorClass)) + +typedef struct _CheeseCameraDeviceMonitorClass CheeseCameraDeviceMonitorClass; +typedef struct _CheeseCameraDeviceMonitor CheeseCameraDeviceMonitor; + +struct _CheeseCameraDeviceMonitor +{ + GObject parent; +}; + +struct _CheeseCameraDeviceMonitorClass +{ + GObjectClass parent_class; + + void (*added)(CheeseCameraDeviceMonitor *camera, + const char *id, + const char *device_file, + const char *product_name, + int api_version); + void (*removed)(CheeseCameraDeviceMonitor *camera, const char *id); +}; + +GType cheese_camera_device_monitor_get_type (void) G_GNUC_CONST; +CheeseCameraDeviceMonitor *cheese_camera_device_monitor_new (void); +void cheese_camera_device_monitor_coldplug (CheeseCameraDeviceMonitor *monitor); + +G_END_DECLS + +#endif /* __CHEESE_CAMERA_DEVICE_MONITOR_H__ */ |