[empathy] Add CheeseCameraDeviceMonitor from libcheese
- From: Emilio Pozuelo Monfort <epm src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [empathy] Add CheeseCameraDeviceMonitor from libcheese
- Date: Tue, 12 Jul 2011 09:16:33 +0000 (UTC)
commit eba2a3dba40cab986589bac073d16627b3f9bf90
Author: Emilio Pozuelo Monfort <emilio pozuelo collabora co uk>
Date: Tue May 10 09:48:06 2011 +0100
Add CheeseCameraDeviceMonitor from libcheese
libempathy/Makefile.am | 9 +-
libempathy/cheese-camera-device-monitor.c | 412 +++++++++++++++++++++++++++++
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 56ea9e7..460026e 100644
--- a/libempathy/Makefile.am
+++ b/libempathy/Makefile.am
@@ -68,7 +68,7 @@ libempathy_headers = \
empathy-types.h \
empathy-utils.h
-libempathy_la_SOURCES = \
+libempathy_handwritten_source = \
$(libempathy_headers) \
action-chain.c \
empathy-account-settings.c \
@@ -107,6 +107,10 @@ 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)
@@ -122,8 +126,7 @@ 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 0000000..85c6a0a
--- /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 0000000..d0d98a4
--- /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__ */
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