diff options
Diffstat (limited to 'sys/v4l2/gstv4l2object.c')
| -rw-r--r-- | sys/v4l2/gstv4l2object.c | 509 |
1 files changed, 0 insertions, 509 deletions
diff --git a/sys/v4l2/gstv4l2object.c b/sys/v4l2/gstv4l2object.c deleted file mode 100644 index 3ed211df5..000000000 --- a/sys/v4l2/gstv4l2object.c +++ /dev/null @@ -1,509 +0,0 @@ -/* GStreamer - * - * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net> - * 2006 Edgard Lima <edgard.lima@indt.org.br> - * - * gstv4l2object.c: base class for V4L2 elements - * - * 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 "v4l2_calls.h" -#include "gstv4l2tuner.h" -#ifdef HAVE_XVIDEO -#include "gstv4l2xoverlay.h" -#endif -#include "gstv4l2colorbalance.h" - -#define DEFAULT_PROP_DEVICE "/dev/video0" -#define DEFAULT_PROP_DEVICE_NAME NULL -#define DEFAULT_PROP_FLAGS 0 -#define DEFAULT_PROP_NORM NULL -#define DEFAULT_PROP_CHANNEL NULL -#define DEFAULT_PROP_FREQUENCY 0 - -enum -{ - PROP_0, - V4L2_STD_OBJECT_PROPS, -}; - -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 (GstElementClass * klass, gboolean check, - GList ** klass_devices) -{ - static gboolean init = FALSE; - static GList *devices = NULL; - - if (!init && !check) { - const 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; -} - -void -gst_v4l2_probe_probe_property (GstPropertyProbe * probe, - guint prop_id, const GParamSpec * pspec, GList ** klass_devices) -{ - GstElementClass *klass = GST_ELEMENT_GET_CLASS (probe); - - switch (prop_id) { - case PROP_DEVICE: - gst_v4l2_class_probe_devices (klass, FALSE, klass_devices); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec); - break; - } -} - -gboolean -gst_v4l2_probe_needs_probe (GstPropertyProbe * probe, - guint prop_id, const GParamSpec * pspec, GList ** klass_devices) -{ - GstElementClass *klass = GST_ELEMENT_GET_CLASS (probe); - gboolean ret = FALSE; - - switch (prop_id) { - case PROP_DEVICE: - ret = !gst_v4l2_class_probe_devices (klass, TRUE, klass_devices); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec); - break; - } - return ret; -} - -static GValueArray * -gst_v4l2_class_list_devices (GstElementClass * klass, GList ** klass_devices) -{ - 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; -} - -GValueArray * -gst_v4l2_probe_get_values (GstPropertyProbe * probe, - guint prop_id, const GParamSpec * pspec, GList ** klass_devices) -{ - GstElementClass *klass = GST_ELEMENT_GET_CLASS (probe); - GValueArray *array = NULL; - - switch (prop_id) { - case PROP_DEVICE: - array = gst_v4l2_class_list_devices (klass, klass_devices); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec); - break; - } - - return array; -} - -#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, "Device supports video capture", "capture"}, - {V4L2_CAP_VIDEO_OUTPUT, "Device supports video playback", "output"}, - {V4L2_CAP_VIDEO_OVERLAY, "Device supports video overlay", "overlay"}, - - {V4L2_CAP_VBI_CAPTURE, "Device supports the VBI capture", "vbi-capture"}, - {V4L2_CAP_VBI_OUTPUT, "Device supports the VBI output", "vbi-output"}, - - {V4L2_CAP_TUNER, "Device has a tuner or modulator", "tuner"}, - {V4L2_CAP_AUDIO, "Device has audio inputs or outputs", "audio"}, - - {0, NULL, NULL} - }; - - v4l2_device_type = - g_flags_register_static ("GstV4l2DeviceTypeFlags", values); - } - - return v4l2_device_type; -} - -void -gst_v4l2_object_install_properties_helper (GObjectClass * gobject_class) -{ - g_object_class_install_property (gobject_class, PROP_DEVICE, - g_param_spec_string ("device", "Device", "Device location", - DEFAULT_PROP_DEVICE, G_PARAM_READWRITE)); - g_object_class_install_property (gobject_class, PROP_DEVICE_NAME, - g_param_spec_string ("device-name", "Device name", - "Name of the device", DEFAULT_PROP_DEVICE_NAME, G_PARAM_READABLE)); - g_object_class_install_property (gobject_class, PROP_FLAGS, - g_param_spec_flags ("flags", "Flags", "Device type flags", - GST_TYPE_V4L2_DEVICE_FLAGS, DEFAULT_PROP_FLAGS, G_PARAM_READABLE)); -/* FIXME norm, channel, frequency are part of the tuner interface, so they - should be removed from the properties - g_object_class_install_property (gobject_class, PROP_NORM, - g_param_spec_string ("norm", "Norm", "Standard norm to use", - DEFAULT_PROP_NORM, G_PARAM_READWRITE)); - g_object_class_install_property (gobject_class, PROP_CHANNEL, - g_param_spec_string ("channel", "Channel", - "Input/output channel to switch to", DEFAULT_PROP_CHANNEL, - 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, DEFAULT_PROP_FREQUENCY, - G_PARAM_READWRITE)); -*/ -} - -GstV4l2Object * -gst_v4l2_object_new (GstElement * element, - GstV4l2GetInOutFunction get_in_out_func, - GstV4l2SetInOutFunction set_in_out_func, - GstV4l2UpdateFpsFunction update_fps_func) -{ - GstV4l2Object *v4l2object; - - /* - * some default values - */ - v4l2object = g_new0 (GstV4l2Object, 1); - - v4l2object->element = element; - v4l2object->get_in_out_func = get_in_out_func; - v4l2object->set_in_out_func = set_in_out_func; - v4l2object->update_fps_func = update_fps_func; - - v4l2object->video_fd = -1; - v4l2object->buffer = NULL; - v4l2object->videodev = g_strdup (DEFAULT_PROP_DEVICE); - - v4l2object->norms = NULL; - v4l2object->channels = NULL; - v4l2object->colors = NULL; - - v4l2object->xwindow_id = 0; - - return v4l2object; -} - -void -gst_v4l2_object_destroy (GstV4l2Object ** v4l2object) -{ - if (*v4l2object) { - if ((*v4l2object)->videodev) { - g_free ((*v4l2object)->videodev); - (*v4l2object)->videodev = NULL; - } - - g_free (*v4l2object); - *v4l2object = NULL; - } -} - -gboolean -gst_v4l2_object_set_property_helper (GstV4l2Object * v4l2object, - guint prop_id, const GValue * value, GParamSpec * pspec) -{ - switch (prop_id) { - case PROP_DEVICE: - g_free (v4l2object->videodev); - v4l2object->videodev = g_value_dup_string (value); - break; - case PROP_NORM: - if (GST_V4L2_IS_OPEN (v4l2object)) { - GstTuner *tuner = GST_TUNER (v4l2object->element); - GstTunerNorm *norm = gst_tuner_find_norm_by_name (tuner, - (gchar *) g_value_get_string (value)); - - if (norm) { - /* like gst_tuner_set_norm (tuner, norm) - without g_object_notify */ - gst_v4l2_tuner_set_norm (v4l2object, norm); - } - } else { - g_free (v4l2object->norm); - v4l2object->norm = g_value_dup_string (value); - } - break; - case PROP_CHANNEL: - if (GST_V4L2_IS_OPEN (v4l2object)) { - GstTuner *tuner = GST_TUNER (v4l2object->element); - GstTunerChannel *channel = gst_tuner_find_channel_by_name (tuner, - (gchar *) g_value_get_string (value)); - - if (channel) { - /* like gst_tuner_set_channel (tuner, channel) - without g_object_notify */ - gst_v4l2_tuner_set_channel (v4l2object, channel); - } - } else { - g_free (v4l2object->channel); - v4l2object->channel = g_value_dup_string (value); - } - break; - case PROP_FREQUENCY: - if (GST_V4L2_IS_OPEN (v4l2object)) { - GstTuner *tuner = GST_TUNER (v4l2object->element); - GstTunerChannel *channel = gst_tuner_get_channel (tuner); - - if (channel && - GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) { - /* like - gst_tuner_set_frequency (tuner, channel, g_value_get_ulong (value)) - without g_object_notify */ - gst_v4l2_tuner_set_frequency (v4l2object, channel, - g_value_get_ulong (value)); - } - } else { - v4l2object->frequency = g_value_get_ulong (value); - } - break; - default: - return FALSE; - break; - } - return TRUE; -} - - -gboolean -gst_v4l2_object_get_property_helper (GstV4l2Object * v4l2object, - guint prop_id, GValue * value, GParamSpec * pspec) -{ - switch (prop_id) { - case PROP_DEVICE: - g_value_set_string (value, v4l2object->videodev); - break; - case PROP_DEVICE_NAME: - { - const guchar *new = NULL; - - if (GST_V4L2_IS_OPEN (v4l2object)) { - new = v4l2object->vcap.card; - } else if (gst_v4l2_open (v4l2object)) { - new = v4l2object->vcap.card; - gst_v4l2_close (v4l2object); - } - g_value_set_string (value, (gchar *) new); - break; - } - case PROP_FLAGS: - { - guint flags = 0; - - if (GST_V4L2_IS_OPEN (v4l2object)) { - flags |= v4l2object->vcap.capabilities & - (V4L2_CAP_VIDEO_CAPTURE | - V4L2_CAP_VIDEO_OUTPUT | - V4L2_CAP_VIDEO_OVERLAY | - V4L2_CAP_VBI_CAPTURE | - V4L2_CAP_VBI_OUTPUT | V4L2_CAP_TUNER | V4L2_CAP_AUDIO); - } - g_value_set_flags (value, flags); - break; - } - case PROP_NORM: - g_value_set_string (value, v4l2object->norm); - break; - case PROP_CHANNEL: - g_value_set_string (value, v4l2object->channel); - break; - case PROP_FREQUENCY: - g_value_set_ulong (value, v4l2object->frequency); - break; - default: - return FALSE; - break; - } - return TRUE; -} - -static void -gst_v4l2_set_defaults (GstV4l2Object * v4l2object) -{ - GstTunerNorm *norm = NULL; - GstTunerChannel *channel = NULL; - GstTuner *tuner = GST_TUNER (v4l2object->element); - - if (v4l2object->norm) - norm = gst_tuner_find_norm_by_name (tuner, v4l2object->norm); - if (norm) { - gst_tuner_set_norm (tuner, norm); - } else { - norm = - GST_TUNER_NORM (gst_tuner_get_norm (GST_TUNER (v4l2object->element))); - if (norm) { - g_free (v4l2object->norm); - v4l2object->norm = g_strdup (norm->label); - gst_tuner_norm_changed (tuner, norm); -/* FIXME: remove - g_object_notify (G_OBJECT (v4l2object->element), "norm"); -*/ - } - } - - if (v4l2object->channel) - channel = gst_tuner_find_channel_by_name (tuner, v4l2object->channel); - if (channel) { - gst_tuner_set_channel (tuner, channel); - } else { - channel = - GST_TUNER_CHANNEL (gst_tuner_get_channel (GST_TUNER (v4l2object-> - element))); - g_free (v4l2object->channel); - v4l2object->channel = g_strdup (channel->label); - gst_tuner_channel_changed (tuner, channel); -/* FIXME: remove - g_object_notify (G_OBJECT (v4l2object->element), "channel"); -*/ - } - - if (GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) { - if (v4l2object->frequency != 0) { - gst_tuner_set_frequency (tuner, channel, v4l2object->frequency); - } else { - v4l2object->frequency = gst_tuner_get_frequency (tuner, channel); - if (v4l2object->frequency == 0) { - /* guess */ - gst_tuner_set_frequency (tuner, channel, 1000); - } else { -/* FIXME: remove - g_object_notify (G_OBJECT (v4l2object->element), "frequency"); -*/ - } - } - } -} - -gboolean -gst_v4l2_object_start (GstV4l2Object * v4l2object) -{ - if (gst_v4l2_open (v4l2object)) - gst_v4l2_set_defaults (v4l2object); - else - return FALSE; - -#ifdef HAVE_XVIDEO - gst_v4l2_xoverlay_start (v4l2object); -#endif - - return TRUE; -} - -gboolean -gst_v4l2_object_stop (GstV4l2Object * v4l2object) -{ -#ifdef HAVE_XVIDEO - gst_v4l2_xoverlay_stop (v4l2object); -#endif - - if (!gst_v4l2_close (v4l2object)) - return FALSE; - - return TRUE; -} |