diff options
Diffstat (limited to 'sys/v4l2/gstv4l2element.c')
| -rw-r--r-- | sys/v4l2/gstv4l2element.c | 572 |
1 files changed, 0 insertions, 572 deletions
diff --git a/sys/v4l2/gstv4l2element.c b/sys/v4l2/gstv4l2element.c deleted file mode 100644 index 5bbc260e..00000000 --- a/sys/v4l2/gstv4l2element.c +++ /dev/null @@ -1,572 +0,0 @@ -/* - * GStreamer gstv4l2element.c: base class for V4L2 elements - * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net> - * Copyright (C) 2006 Edgard Lima <edgard.lima@indt.org.br> - * 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> - -#include "v4l2_calls.h" -#include "gstv4l2tuner.h" -#ifdef HAVE_XVIDEO -#include "gstv4l2xoverlay.h" -#endif -#include "gstv4l2colorbalance.h" - - -enum -{ - PROP_0, - PROP_DEVICE, - PROP_DEVICE_NAME, - PROP_FLAGS, - PROP_STD, - PROP_INPUT, - PROP_FREQUENCY -}; - - -static void gst_v4l2element_init_interfaces (GType type); - -GST_BOILERPLATE_FULL (GstV4l2Element, gst_v4l2element, GstPushSrc, - GST_TYPE_PUSH_SRC, gst_v4l2element_init_interfaces); - -static void gst_v4l2element_dispose (GObject * object); -static void gst_v4l2element_set_property (GObject * object, - guint prop_id, const GValue * value, GParamSpec * pspec); -static void gst_v4l2element_get_property (GObject * object, - guint prop_id, GValue * value, GParamSpec * pspec); -static gboolean gst_v4l2element_start (GstBaseSrc * src); -static gboolean gst_v4l2element_stop (GstBaseSrc * src); - - -static gboolean -gst_v4l2_iface_supported (GstImplementsInterface * iface, GType iface_type) -{ - GstV4l2Element *v4l2element = GST_V4L2ELEMENT (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 (v4l2element->video_fd == -1) - return FALSE; - -#ifdef HAVE_XVIDEO - if (iface_type == GST_TYPE_X_OVERLAY && !GST_V4L2_IS_OVERLAY (v4l2element)) - return FALSE; -#endif - - return TRUE; -} - -static void -gst_v4l2_interface_init (GstImplementsInterfaceClass * klass) -{ - /* - * default virtual functions - */ - klass->supported = gst_v4l2_iface_supported; -} - -static const GList * -gst_v4l2_probe_get_properties (GstPropertyProbe * probe) -{ - GObjectClass *klass = G_OBJECT_GET_CLASS (probe); - static GList *list = NULL; - - /* well, not perfect, but better than no locking at all. - * In the worst case we leak a list node, so who cares? */ - GST_CLASS_LOCK (GST_OBJECT_CLASS (klass)); - - if (!list) { - list = g_list_append (NULL, g_object_class_find_property (klass, "device")); - } - - GST_CLASS_UNLOCK (GST_OBJECT_CLASS (klass)); - - return list; -} - -static gboolean -gst_v4l2_class_probe_devices (GstV4l2ElementClass * klass, gboolean check) -{ - static gboolean init = FALSE; - static GList *devices = NULL; - - if (!init && !check) { - gchar *dev_base[] = { "/dev/video", "/dev/v4l2/video", NULL }; - gint base, n, fd; - - while (devices) { - GList *item = devices; - gchar *device = item->data; - - devices = g_list_remove (devices, item); - 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 (S_ISCHR (s.st_mode)) { - - if ((fd = open (device, O_RDWR | O_NONBLOCK)) > 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_v4l2_probe_probe_property (GstPropertyProbe * probe, - guint prop_id, const GParamSpec * pspec) -{ - GstV4l2ElementClass *klass = GST_V4L2ELEMENT_GET_CLASS (probe); - - switch (prop_id) { - case PROP_DEVICE: - gst_v4l2_class_probe_devices (klass, FALSE); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec); - break; - } -} - -static gboolean -gst_v4l2_probe_needs_probe (GstPropertyProbe * probe, - guint prop_id, const GParamSpec * pspec) -{ - GstV4l2ElementClass *klass = GST_V4L2ELEMENT_GET_CLASS (probe); - gboolean ret = FALSE; - - switch (prop_id) { - case PROP_DEVICE: - ret = !gst_v4l2_class_probe_devices (klass, TRUE); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec); - break; - } - - return ret; -} - -static GValueArray * -gst_v4l2_class_list_devices (GstV4l2ElementClass * 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_v4l2_probe_get_values (GstPropertyProbe * probe, - guint prop_id, const GParamSpec * pspec) -{ - GstV4l2ElementClass *klass = GST_V4L2ELEMENT_GET_CLASS (probe); - GValueArray *array = NULL; - - switch (prop_id) { - case PROP_DEVICE: - array = gst_v4l2_class_list_devices (klass); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec); - break; - } - - return array; -} - -static void -gst_v4l2_property_probe_interface_init (GstPropertyProbeInterface * iface) -{ - iface->get_properties = gst_v4l2_probe_get_properties; - iface->probe_property = gst_v4l2_probe_probe_property; - iface->needs_probe = gst_v4l2_probe_needs_probe; - iface->get_values = gst_v4l2_probe_get_values; -} - -#define GST_TYPE_V4L2_DEVICE_FLAGS (gst_v4l2_device_get_type ()) -GType -gst_v4l2_device_get_type (void) -{ - static GType v4l2_device_type = 0; - - if (v4l2_device_type == 0) { - static const GFlagsValue values[] = { - {V4L2_CAP_VIDEO_CAPTURE, "CAPTURE", - "Device supports video capture"}, - {V4L2_CAP_VIDEO_OUTPUT, "PLAYBACK", - "Device supports video playback"}, - {V4L2_CAP_VIDEO_OVERLAY, "OVERLAY", - "Device supports video overlay"}, - - {V4L2_CAP_VBI_CAPTURE, "VBI_CAPTURE", - "Device supports the VBI capture"}, - {V4L2_CAP_VBI_OUTPUT, "VBI_OUTPUT", - "Device supports the VBI output"}, - - {V4L2_CAP_TUNER, "TUNER", - "Device has a tuner or modulator"}, - {V4L2_CAP_AUDIO, "AUDIO", - "Device has audio inputs or outputs"}, - - {0, NULL, NULL} - }; - - v4l2_device_type = - g_flags_register_static ("GstV4l2DeviceTypeFlags", values); - } - - return v4l2_device_type; -} - -static void -gst_v4l2element_init_interfaces (GType type) -{ - static const GInterfaceInfo v4l2iface_info = { - (GInterfaceInitFunc) gst_v4l2_interface_init, - NULL, - NULL, - }; - static const GInterfaceInfo v4l2_tuner_info = { - (GInterfaceInitFunc) gst_v4l2_tuner_interface_init, - NULL, - NULL, - }; -#ifdef HAVE_XVIDEO - static const GInterfaceInfo v4l2_xoverlay_info = { - (GInterfaceInitFunc) gst_v4l2_xoverlay_interface_init, - NULL, - NULL, - }; -#endif - static const GInterfaceInfo v4l2_colorbalance_info = { - (GInterfaceInitFunc) gst_v4l2_color_balance_interface_init, - NULL, - NULL, - }; - static const GInterfaceInfo v4l2_propertyprobe_info = { - (GInterfaceInitFunc) gst_v4l2_property_probe_interface_init, - NULL, - NULL, - }; - - g_type_add_interface_static (type, - GST_TYPE_IMPLEMENTS_INTERFACE, &v4l2iface_info); - g_type_add_interface_static (type, GST_TYPE_TUNER, &v4l2_tuner_info); -#ifdef HAVE_XVIDEO - g_type_add_interface_static (type, GST_TYPE_X_OVERLAY, &v4l2_xoverlay_info); -#endif - g_type_add_interface_static (type, - GST_TYPE_COLOR_BALANCE, &v4l2_colorbalance_info); - g_type_add_interface_static (type, GST_TYPE_PROPERTY_PROBE, - &v4l2_propertyprobe_info); -} - - -static void -gst_v4l2element_base_init (gpointer g_class) -{ - GstV4l2ElementClass *klass = GST_V4L2ELEMENT_CLASS (g_class); - - klass->devices = NULL; -} - -static void -gst_v4l2element_class_init (GstV4l2ElementClass * klass) -{ - GObjectClass *gobject_class; - GstBaseSrcClass *basesrc_class; - - gobject_class = (GObjectClass *) klass; - basesrc_class = (GstBaseSrcClass *) klass; - - gobject_class->set_property = gst_v4l2element_set_property; - gobject_class->get_property = gst_v4l2element_get_property; - - g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DEVICE, - g_param_spec_string ("device", - "Device", "Device location", NULL, G_PARAM_READWRITE)); - 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_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FLAGS, - g_param_spec_flags ("flags", "Flags", - "Device type flags", - GST_TYPE_V4L2_DEVICE_FLAGS, 0, G_PARAM_READABLE)); - g_object_class_install_property (gobject_class, PROP_STD, - g_param_spec_string ("std", "std", - "standard (norm) to use", NULL, G_PARAM_READWRITE)); - g_object_class_install_property (gobject_class, PROP_INPUT, - g_param_spec_string ("input", - "input", - "input/output (channel) to switch to", NULL, G_PARAM_READWRITE)); - g_object_class_install_property (gobject_class, PROP_FREQUENCY, - g_param_spec_ulong ("frequency", - "frequency", - "frequency to tune to (in Hz)", 0, G_MAXULONG, 0, G_PARAM_READWRITE)); - - basesrc_class->start = gst_v4l2element_start; - basesrc_class->stop = gst_v4l2element_stop; - - gobject_class->dispose = gst_v4l2element_dispose; -} - - -static void -gst_v4l2element_init (GstV4l2Element * v4l2element, GstV4l2ElementClass * klass) -{ - /* - * some default values - */ - v4l2element->video_fd = -1; - v4l2element->buffer = NULL; - v4l2element->videodev = g_strdup ("/dev/video0"); - - v4l2element->stds = NULL; - v4l2element->inputs = NULL; - v4l2element->colors = NULL; - - v4l2element->xwindow_id = 0; -} - - -static void -gst_v4l2element_dispose (GObject * object) -{ - GstV4l2Element *v4l2element = GST_V4L2ELEMENT (object); - - if (v4l2element->videodev) { - g_free (v4l2element->videodev); - v4l2element->videodev = NULL; - } - - if (((GObjectClass *) parent_class)->dispose) - ((GObjectClass *) parent_class)->dispose (object); -} - - -static void -gst_v4l2element_set_property (GObject * object, - guint prop_id, const GValue * value, GParamSpec * pspec) -{ - GstV4l2Element *v4l2element = GST_V4L2ELEMENT (object); - - switch (prop_id) { - case PROP_DEVICE: - if (v4l2element->videodev) - g_free (v4l2element->videodev); - v4l2element->videodev = g_strdup (g_value_get_string (value)); - break; - case PROP_STD: - if (GST_V4L2_IS_OPEN (v4l2element)) { - GstTuner *tuner = GST_TUNER (v4l2element); - GstTunerNorm *norm = gst_tuner_find_norm_by_name (tuner, - (gchar *) - g_value_get_string (value)); - - if (norm) { - /* more generic would be gst_tuner_set_norm (tuner, norm) - without g_object_notify */ - gst_v4l2_tuner_set_norm (tuner, norm); - } - } else { - g_free (v4l2element->std); - v4l2element->std = g_value_dup_string (value); - } - break; - case PROP_INPUT: - if (GST_V4L2_IS_OPEN (v4l2element)) { - GstTuner *tuner = GST_TUNER (v4l2element); - GstTunerChannel *channel = gst_tuner_find_channel_by_name (tuner, - (gchar *) - g_value_get_string (value)); - - if (channel) { - /* more generic would be gst_tuner_set_channel (tuner, channel) - without g_object_notify */ - gst_v4l2_tuner_set_channel (tuner, channel); - } - } else { - g_free (v4l2element->input); - v4l2element->input = g_value_dup_string (value); - } - break; - case PROP_FREQUENCY: - if (GST_V4L2_IS_OPEN (v4l2element)) { - GstTuner *tuner = GST_TUNER (v4l2element); - GstTunerChannel *channel = gst_tuner_get_channel (tuner); - - if (channel && - GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) { - /* more generic would be - gst_tuner_set_frequency (tuner, channel, g_value_get_ulong (value)) - without g_object_notify */ - gst_v4l2_tuner_set_frequency (tuner, channel, - g_value_get_ulong (value)); - } - } else { - v4l2element->frequency = g_value_get_ulong (value); - } - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - - -static void -gst_v4l2element_get_property (GObject * object, - guint prop_id, GValue * value, GParamSpec * pspec) -{ - GstV4l2Element *v4l2element = GST_V4L2ELEMENT (object); - - switch (prop_id) { - case PROP_DEVICE: - g_value_set_string (value, v4l2element->videodev); - break; - case PROP_DEVICE_NAME: - { - gchar *new = NULL; - - if (GST_V4L2_IS_OPEN (v4l2element)) - new = (gchar *) v4l2element->vcap.card; - g_value_set_string (value, new); - break; - } - case PROP_FLAGS: - { - guint flags = 0; - - if (GST_V4L2_IS_OPEN (v4l2element)) { - flags |= v4l2element->vcap.capabilities & - (V4L2_CAP_VIDEO_CAPTURE | - V4L2_CAP_VIDEO_OUTPUT | - V4L2_CAP_VIDEO_OVERLAY | V4L2_CAP_TUNER | V4L2_CAP_AUDIO); - if (v4l2element->vcap.capabilities & V4L2_CAP_AUDIO) - flags |= V4L2_FBUF_CAP_CHROMAKEY; - } - g_value_set_flags (value, flags); - break; - } - case PROP_STD: - g_value_set_string (value, v4l2element->std); - break; - case PROP_INPUT: - g_value_set_string (value, v4l2element->input); - break; - case PROP_FREQUENCY: - g_value_set_ulong (value, v4l2element->frequency); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static gboolean -gst_v4l2element_start (GstBaseSrc * src) -{ - GstV4l2Element *v4l2element = GST_V4L2ELEMENT (src); - - if (!gst_v4l2_open (v4l2element)) - return FALSE; - -#ifdef HAVE_XVIDEO - gst_v4l2_xoverlay_start (v4l2element); -#endif - - return TRUE; -} - -static gboolean -gst_v4l2element_stop (GstBaseSrc * src) -{ - GstV4l2Element *v4l2element = GST_V4L2ELEMENT (src); - -#ifdef HAVE_XVIDEO - gst_v4l2_xoverlay_stop (v4l2element); -#endif - - if (!gst_v4l2_close (v4l2element)) - return FALSE; - - return TRUE; -} |