diff options
Diffstat (limited to 'sys/v4l/gstv4lelement.c')
| -rw-r--r-- | sys/v4l/gstv4lelement.c | 552 |
1 files changed, 0 insertions, 552 deletions
diff --git a/sys/v4l/gstv4lelement.c b/sys/v4l/gstv4lelement.c deleted file mode 100644 index 27fae757..00000000 --- a/sys/v4l/gstv4lelement.c +++ /dev/null @@ -1,552 +0,0 @@ -/* GStreamer - * - * gstv4lelement.c: base class for V4L elements - * - * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library 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 - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <sys/stat.h> -#include <fcntl.h> -#include <errno.h> -#include <unistd.h> -#include <string.h> - -#include <gst/interfaces/propertyprobe.h> - -#ifdef HAVE_GUDEV -#include <gudev/gudev.h> -#endif - -#include "v4l_calls.h" -#include "gstv4ltuner.h" -#ifdef HAVE_XVIDEO -#include "gstv4lxoverlay.h" -#endif -#include "gstv4lcolorbalance.h" - - -enum -{ - PROP_0, - PROP_DEVICE, - PROP_DEVICE_NAME, - PROP_FLAGS -}; - -GST_DEBUG_CATEGORY (v4lelement_debug); -#define GST_CAT_DEFAULT v4lelement_debug - -static void gst_v4lelement_init_interfaces (GType type); - -GST_BOILERPLATE_FULL (GstV4lElement, gst_v4lelement, GstPushSrc, - GST_TYPE_PUSH_SRC, gst_v4lelement_init_interfaces); - -static void gst_v4lelement_dispose (GObject * object); -static void gst_v4lelement_set_property (GObject * object, - guint prop_id, const GValue * value, GParamSpec * pspec); -static void gst_v4lelement_get_property (GObject * object, - guint prop_id, GValue * value, GParamSpec * pspec); - -/* element methods */ -static GstStateChangeReturn gst_v4lelement_change_state (GstElement * element, - GstStateChange transition); - -static gboolean -gst_v4l_iface_supported (GstImplementsInterface * iface, GType iface_type) -{ - GstV4lElement *v4lelement = GST_V4LELEMENT (iface); - -#ifdef HAVE_XVIDEO - g_assert (iface_type == GST_TYPE_TUNER || - iface_type == GST_TYPE_X_OVERLAY || iface_type == GST_TYPE_COLOR_BALANCE); -#else - g_assert (iface_type == GST_TYPE_TUNER || - iface_type == GST_TYPE_COLOR_BALANCE); -#endif - - if (v4lelement->video_fd == -1) - return FALSE; - -#ifdef HAVE_XVIDEO - if (iface_type == GST_TYPE_X_OVERLAY && !GST_V4L_IS_OVERLAY (v4lelement)) - return FALSE; -#endif - - return TRUE; -} - -static void -gst_v4l_interface_init (GstImplementsInterfaceClass * klass) -{ - /* default virtual functions */ - klass->supported = gst_v4l_iface_supported; -} - -static const GList * -gst_v4l_probe_get_properties (GstPropertyProbe * probe) -{ - GObjectClass *klass = G_OBJECT_GET_CLASS (probe); - static GList *list = NULL; - - if (!list) { - list = g_list_append (NULL, g_object_class_find_property (klass, "device")); - } - - return list; -} - -static gboolean init = FALSE; -static GList *devices = NULL; - -#ifdef HAVE_GUDEV -static gboolean -gst_v4l_class_probe_devices_with_udev (GstV4lElementClass * klass, - gboolean check) -{ - GUdevClient *client = NULL; - GList *item; - - if (!check) { - while (devices) { - gchar *device = devices->data; - devices = g_list_remove (devices, device); - g_free (device); - } - - GST_INFO ("Enumerating video4linux devices from udev"); - client = g_udev_client_new (NULL); - if (!client) { - GST_WARNING ("Failed to initialize gudev client"); - goto finish; - } - - item = g_udev_client_query_by_subsystem (client, "video4linux"); - while (item) { - GUdevDevice *device = item->data; - gchar *devnode = g_strdup (g_udev_device_get_device_file (device)); - gint api = g_udev_device_get_property_as_int (device, "ID_V4L_VERSION"); - GST_INFO ("Found new device: %s, API: %d", devnode, api); - /* Append v4l1 devices only. If api is 0 probably v4l_id has - been stripped out of the current udev installation, append - anyway */ - if (api == 0) { - GST_WARNING - ("Couldn't retrieve ID_V4L_VERSION, silly udev installation?"); - } - if ((api == 1 || api == 0)) { - devices = g_list_append (devices, devnode); - } else { - g_free (devnode); - } - g_object_unref (device); - item = item->next; - } - g_list_free (item); - init = TRUE; - } - -finish: - if (client) { - g_object_unref (client); - } - - klass->devices = devices; - - return init; -} -#endif /* HAVE_GUDEV */ - -static gboolean -gst_v4l_class_probe_devices (GstV4lElementClass * klass, gboolean check) -{ - if (!check) { - gchar *dev_base[] = { "/dev/video", "/dev/v4l/video", NULL }; - gint base, n, fd; - - while (devices) { - gchar *device = devices->data; - devices = g_list_remove (devices, device); - g_free (device); - } - - /* detect /dev entries */ - for (n = 0; n < 64; n++) { - for (base = 0; dev_base[base] != NULL; base++) { - struct stat s; - gchar *device = g_strdup_printf ("%s%d", dev_base[base], n); - - /* does the /dev/ entry exist at all? */ - if (stat (device, &s) == 0) { - /* yes: is a device attached? */ - if ((fd = open (device, O_RDONLY)) > 0 || errno == EBUSY) { - if (fd > 0) - close (fd); - - devices = g_list_append (devices, device); - break; - } - } - g_free (device); - } - } - - init = TRUE; - } - - klass->devices = devices; - - return init; -} - -static void -gst_v4l_probe_probe_property (GstPropertyProbe * probe, - guint prop_id, const GParamSpec * pspec) -{ - GstV4lElementClass *klass = GST_V4LELEMENT_GET_CLASS (probe); - - switch (prop_id) { - case PROP_DEVICE: -#ifdef HAVE_GUDEV - if (!gst_v4l_class_probe_devices_with_udev (klass, FALSE)) - gst_v4l_class_probe_devices (klass, FALSE); -#else /* !HAVE_GUDEV */ - gst_v4l_class_probe_devices (klass, FALSE); -#endif /* HAVE_GUDEV */ - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec); - break; - } -} - -static gboolean -gst_v4l_probe_needs_probe (GstPropertyProbe * probe, - guint prop_id, const GParamSpec * pspec) -{ - GstV4lElementClass *klass = GST_V4LELEMENT_GET_CLASS (probe); - gboolean ret = FALSE; - - switch (prop_id) { - case PROP_DEVICE: -#ifdef HAVE_GUDEV - ret = !gst_v4l_class_probe_devices_with_udev (klass, FALSE); -#else /* !HAVE_GUDEV */ - ret = !gst_v4l_class_probe_devices (klass, TRUE); -#endif /* HAVE_GUDEV */ - ret = !gst_v4l_class_probe_devices (klass, TRUE); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec); - break; - } - - return ret; -} - -static GValueArray * -gst_v4l_class_list_devices (GstV4lElementClass * klass) -{ - GValueArray *array; - GValue value = { 0 }; - GList *item; - - if (!klass->devices) - return NULL; - - array = g_value_array_new (g_list_length (klass->devices)); - item = klass->devices; - g_value_init (&value, G_TYPE_STRING); - while (item) { - gchar *device = item->data; - - g_value_set_string (&value, device); - g_value_array_append (array, &value); - - item = item->next; - } - g_value_unset (&value); - - return array; -} - -static GValueArray * -gst_v4l_probe_get_values (GstPropertyProbe * probe, - guint prop_id, const GParamSpec * pspec) -{ - GstV4lElementClass *klass = GST_V4LELEMENT_GET_CLASS (probe); - GValueArray *array = NULL; - - switch (prop_id) { - case PROP_DEVICE: - array = gst_v4l_class_list_devices (klass); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec); - break; - } - - return array; -} - -static void -gst_v4l_property_probe_interface_init (GstPropertyProbeInterface * iface) -{ - iface->get_properties = gst_v4l_probe_get_properties; - iface->probe_property = gst_v4l_probe_probe_property; - iface->needs_probe = gst_v4l_probe_needs_probe; - iface->get_values = gst_v4l_probe_get_values; -} - -#define GST_TYPE_V4L_DEVICE_FLAGS (gst_v4l_device_get_type ()) -static GType -gst_v4l_device_get_type (void) -{ - static GType v4l_device_type = 0; - - if (v4l_device_type == 0) { - static const GFlagsValue values[] = { - {VID_TYPE_CAPTURE, "CAPTURE", "Device can capture"}, - {VID_TYPE_TUNER, "TUNER", "Device has a tuner"}, - {VID_TYPE_OVERLAY, "OVERLAY", "Device can do overlay"}, - {VID_TYPE_MPEG_DECODER, "MPEG_DECODER", "Device can decode MPEG"}, - {VID_TYPE_MPEG_ENCODER, "MPEG_ENCODER", "Device can encode MPEG"}, - {VID_TYPE_MJPEG_DECODER, "MJPEG_DECODER", "Device can decode MJPEG"}, - {VID_TYPE_MJPEG_ENCODER, "MJPEG_ENCODER", "Device can encode MJPEG"}, - {0x10000, "AUDIO", "Device handles audio"}, - {0, NULL, NULL} - }; - - v4l_device_type = g_flags_register_static ("GstV4lDeviceTypeFlags", values); - } - - return v4l_device_type; -} - -static void -gst_v4lelement_init_interfaces (GType type) -{ - static const GInterfaceInfo v4liface_info = { - (GInterfaceInitFunc) gst_v4l_interface_init, - NULL, - NULL, - }; - static const GInterfaceInfo v4l_tuner_info = { - (GInterfaceInitFunc) gst_v4l_tuner_interface_init, - NULL, - NULL, - }; -#ifdef HAVE_XVIDEO - static const GInterfaceInfo v4l_xoverlay_info = { - (GInterfaceInitFunc) gst_v4l_xoverlay_interface_init, - NULL, - NULL, - }; -#endif - static const GInterfaceInfo v4l_colorbalance_info = { - (GInterfaceInitFunc) gst_v4l_color_balance_interface_init, - NULL, - NULL, - }; - static const GInterfaceInfo v4l_propertyprobe_info = { - (GInterfaceInitFunc) gst_v4l_property_probe_interface_init, - NULL, - NULL, - }; - - g_type_add_interface_static (type, - GST_TYPE_IMPLEMENTS_INTERFACE, &v4liface_info); - g_type_add_interface_static (type, GST_TYPE_TUNER, &v4l_tuner_info); -#ifdef HAVE_XVIDEO - g_type_add_interface_static (type, GST_TYPE_X_OVERLAY, &v4l_xoverlay_info); -#endif - g_type_add_interface_static (type, - GST_TYPE_COLOR_BALANCE, &v4l_colorbalance_info); - g_type_add_interface_static (type, - GST_TYPE_PROPERTY_PROBE, &v4l_propertyprobe_info); -} - - -static void -gst_v4lelement_base_init (gpointer g_class) -{ - GstV4lElementClass *klass = GST_V4LELEMENT_CLASS (g_class); - - klass->devices = NULL; - - GST_DEBUG_CATEGORY_INIT (v4lelement_debug, "v4lelement", 0, - "V4L Base Class debug"); -} - -static void -gst_v4lelement_class_init (GstV4lElementClass * klass) -{ - GObjectClass *gobject_class; - GstElementClass *element_class; - - gobject_class = (GObjectClass *) klass; - element_class = GST_ELEMENT_CLASS (klass); - - gobject_class->set_property = gst_v4lelement_set_property; - gobject_class->get_property = gst_v4lelement_get_property; - gobject_class->dispose = gst_v4lelement_dispose; - - element_class->change_state = gst_v4lelement_change_state; - - g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DEVICE, - g_param_spec_string ("device", "Device", "Device location", - NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DEVICE_NAME, - g_param_spec_string ("device-name", "Device name", "Name of the device", - NULL, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); - g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FLAGS, - g_param_spec_flags ("flags", "Flags", "Device type flags", - GST_TYPE_V4L_DEVICE_FLAGS, 0, - G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); - -} - - -static void -gst_v4lelement_init (GstV4lElement * v4lelement, GstV4lElementClass * klass) -{ - /* some default values */ - v4lelement->video_fd = -1; - v4lelement->buffer = NULL; - v4lelement->videodev = g_strdup ("/dev/video0"); - - v4lelement->norms = NULL; - v4lelement->channels = NULL; - v4lelement->colors = NULL; - - v4lelement->xwindow_id = 0; -} - - -static void -gst_v4lelement_dispose (GObject * object) -{ - GstV4lElement *v4lelement = GST_V4LELEMENT (object); - - if (v4lelement->videodev) { - g_free (v4lelement->videodev); - v4lelement->videodev = NULL; - } - - if (((GObjectClass *) parent_class)->dispose) - ((GObjectClass *) parent_class)->dispose (object); -} - - -static void -gst_v4lelement_set_property (GObject * object, - guint prop_id, const GValue * value, GParamSpec * pspec) -{ - GstV4lElement *v4lelement = GST_V4LELEMENT (object); - - switch (prop_id) { - case PROP_DEVICE: - if (v4lelement->videodev) - g_free (v4lelement->videodev); - v4lelement->videodev = g_strdup (g_value_get_string (value)); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - - -static void -gst_v4lelement_get_property (GObject * object, - guint prop_id, GValue * value, GParamSpec * pspec) -{ - GstV4lElement *v4lelement = GST_V4LELEMENT (object); - - switch (prop_id) { - case PROP_DEVICE: - g_value_set_string (value, v4lelement->videodev); - break; - case PROP_DEVICE_NAME:{ - gchar *new = NULL; - - if (GST_V4L_IS_OPEN (v4lelement)) { - new = v4lelement->vcap.name; - } else if (gst_v4l_open (v4lelement)) { - new = v4lelement->vcap.name; - gst_v4l_close (v4lelement); - } - g_value_set_string (value, new); - break; - } - case PROP_FLAGS:{ - guint flags = 0; - - if (GST_V4L_IS_OPEN (v4lelement)) { - flags |= v4lelement->vcap.type & 0x3C0B; - if (v4lelement->vcap.audios) - flags |= 0x10000; - } - g_value_set_flags (value, flags); - break; - } - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static GstStateChangeReturn -gst_v4lelement_change_state (GstElement * element, GstStateChange transition) -{ - GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; - GstV4lElement *v4lelement = GST_V4LELEMENT (element); - - switch (transition) { - case GST_STATE_CHANGE_NULL_TO_READY: - /* open the device */ - if (!gst_v4l_open (v4lelement)) - return GST_STATE_CHANGE_FAILURE; -#ifdef HAVE_XVIDEO - gst_v4l_xoverlay_start (v4lelement); -#endif - break; - default: - break; - } - - ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); - - switch (transition) { - case GST_STATE_CHANGE_READY_TO_NULL: - /* close the device */ -#ifdef HAVE_XVIDEO - gst_v4l_xoverlay_stop (v4lelement); -#endif - if (!gst_v4l_close (v4lelement)) - return GST_STATE_CHANGE_FAILURE; - break; - default: - break; - } - - return ret; -} |