/* G-Streamer generic V4L element - generic V4L calls handling * Copyright (C) 2001-2002 Ronald Bultje * * 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. */ #include "v4l_calls.h" static GstElementDetails gst_v4lelement_details = { "Generic video4linux Element", "None/Video", "Generic plugin for handling common video4linux calls", VERSION, "Ronald Bultje ", "(C) 2001", }; /* V4lElement signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { ARG_0, ARG_CHANNEL, ARG_CHANNEL_NAME, ARG_NORM, ARG_NORM_NAME, ARG_HAS_TUNER, ARG_FREQUENCY, ARG_HAS_AUDIO, ARG_MUTE, ARG_MODE, ARG_VOLUME, ARG_HUE, ARG_BRIGHTNESS, ARG_CONTRAST, ARG_SATURATION, ARG_DEVICE, ARG_DEVICE_NAME, ARG_DEVICE_IS_CAPTURE, ARG_DEVICE_IS_OVERLAY, ARG_DEVICE_IS_MJPEG_CAPTURE, ARG_DEVICE_IS_MJPEG_PLAYBACK, ARG_DEVICE_IS_MPEG_CAPTURE, ARG_DEVICE_IS_MPEG_PLAYBACK }; static void gst_v4lelement_class_init (GstV4lElementClass *klass); static void gst_v4lelement_init (GstV4lElement *v4lelement); 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); static GstElementStateReturn gst_v4lelement_change_state (GstElement *element); static gboolean plugin_init (GModule *module, GstPlugin *plugin); static GstElementClass *parent_class = NULL; //static guint gst_v4lelement_signals[LAST_SIGNAL] = { 0 }; GType gst_v4lelement_get_type (void) { static GType v4lelement_type = 0; if (!v4lelement_type) { static const GTypeInfo v4lelement_info = { sizeof(GstV4lElementClass), NULL, NULL, (GClassInitFunc)gst_v4lelement_class_init, NULL, NULL, sizeof(GstV4lElement), 0, (GInstanceInitFunc)gst_v4lelement_init, NULL }; v4lelement_type = g_type_register_static(GST_TYPE_ELEMENT, "GstV4lElement", &v4lelement_info, 0); } return v4lelement_type; } static void gst_v4lelement_class_init (GstV4lElementClass *klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass*)klass; gstelement_class = (GstElementClass*)klass; parent_class = g_type_class_ref(GST_TYPE_ELEMENT); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CHANNEL, g_param_spec_int("channel","channel","channel", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CHANNEL_NAME, g_param_spec_string("channel_name","channel_name","channel_name", NULL, G_PARAM_READABLE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_NORM, g_param_spec_int("norm","norm","norm", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_NORM_NAME, g_param_spec_string("norm_name","norm_name","norm_name", NULL, G_PARAM_READABLE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HAS_TUNER, g_param_spec_boolean("has_tuner","has_tuner","has_tuner", 0,G_PARAM_READABLE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FREQUENCY, g_param_spec_ulong("frequency","frequency","frequency", 0,G_MAXULONG,0,G_PARAM_READWRITE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HAS_AUDIO, g_param_spec_boolean("has_audio","has_audio","has_audio", 0,G_PARAM_READABLE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_MUTE, g_param_spec_boolean("mute","mute","mute", 0,G_PARAM_READWRITE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VOLUME, g_param_spec_int("volume","volume","volume", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_MODE, g_param_spec_int("mode","mode","mode", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HUE, g_param_spec_int("hue","hue","hue", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BRIGHTNESS, g_param_spec_int("brightness","brightness","brightness", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CONTRAST, g_param_spec_int("contrast","contrast","contrast", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_SATURATION, g_param_spec_int("saturation","saturation","saturation", G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE, g_param_spec_string("device","device","device", NULL, G_PARAM_READWRITE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE_NAME, g_param_spec_string("device_name","device_name","device_name", NULL, G_PARAM_READABLE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE_IS_CAPTURE, g_param_spec_boolean("can_capture","can_capture","can_capture", 0,G_PARAM_READABLE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE_IS_OVERLAY, g_param_spec_boolean("has_overlay","has_overlay","has_overlay", 0,G_PARAM_READABLE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE_IS_MJPEG_CAPTURE, g_param_spec_boolean("can_capture_mjpeg","can_capture_mjpeg","can_capture_mjpeg", 0,G_PARAM_READABLE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE_IS_MJPEG_PLAYBACK, g_param_spec_boolean("can_playback_mjpeg","can_playback_mjpeg","can_playback_mjpeg", 0,G_PARAM_READABLE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE_IS_MPEG_CAPTURE, g_param_spec_boolean("can_capture_mpeg","can_capture_mpeg","can_capture_mpeg", 0,G_PARAM_READABLE)); g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE_IS_MPEG_PLAYBACK, g_param_spec_boolean("can_playback_mpeg","can_playback_mpeg","can_playback_mpeg", 0,G_PARAM_READABLE)); gobject_class->set_property = gst_v4lelement_set_property; gobject_class->get_property = gst_v4lelement_get_property; gstelement_class->change_state = gst_v4lelement_change_state; } static void gst_v4lelement_init (GstV4lElement *v4lelement) { /* some default values */ v4lelement->video_fd = -1; v4lelement->buffer = NULL; v4lelement->videodev = NULL; v4lelement->norm = -1; v4lelement->channel = -1; /* the first channel */ v4lelement->frequency = 0; v4lelement->mute = FALSE; v4lelement->volume = -1; v4lelement->mode = -1; v4lelement->brightness = -1; v4lelement->hue = -1; v4lelement->contrast = -1; v4lelement->saturation = -1; } static void gst_v4lelement_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GstV4lElement *v4lelement; /* it's not null if we got it, but it might not be ours */ g_return_if_fail(GST_IS_V4LELEMENT(object)); v4lelement = GST_V4LELEMENT(object); switch (prop_id) { case ARG_CHANNEL: v4lelement->channel = g_value_get_int(value); if (GST_V4L_IS_OPEN(v4lelement) && !GST_V4L_IS_ACTIVE(v4lelement)) { if (v4lelement->norm >= VIDEO_MODE_PAL && v4lelement->norm < VIDEO_MODE_AUTO && v4lelement->channel >= 0) if (!gst_v4l_set_chan_norm(v4lelement, v4lelement->channel, v4lelement->norm)) return; } break; case ARG_NORM: v4lelement->norm = g_value_get_int(value); if (GST_V4L_IS_OPEN(v4lelement) && !GST_V4L_IS_ACTIVE(v4lelement)) { if (v4lelement->norm >= VIDEO_MODE_PAL && v4lelement->norm < VIDEO_MODE_AUTO && v4lelement->channel >= 0) if (!gst_v4l_set_chan_norm(v4lelement, v4lelement->channel, v4lelement->norm)) return; } break; case ARG_FREQUENCY: v4lelement->frequency = g_value_get_ulong(value); if (GST_V4L_IS_OPEN(v4lelement) && !GST_V4L_IS_ACTIVE(v4lelement)) { if (gst_v4l_has_tuner(v4lelement)) if (!gst_v4l_set_frequency(v4lelement, v4lelement->frequency)) return; } break; case ARG_MUTE: v4lelement->mute = g_value_get_boolean(value); if (GST_V4L_IS_OPEN(v4lelement)) { if (gst_v4l_has_audio(v4lelement)) if (!gst_v4l_set_audio(v4lelement, V4L_AUDIO_MUTE, v4lelement->mute)) return; } break; case ARG_MODE: v4lelement->mode = g_value_get_int(value); if (GST_V4L_IS_OPEN(v4lelement)) { if (!gst_v4l_set_audio(v4lelement, V4L_AUDIO_MODE, v4lelement->mute)) return; } break; case ARG_VOLUME: v4lelement->volume = g_value_get_int(value); if (GST_V4L_IS_OPEN(v4lelement)) { if (!gst_v4l_set_audio(v4lelement, V4L_AUDIO_VOLUME, v4lelement->volume)) return; } break; case ARG_HUE: v4lelement->hue = g_value_get_int(value); if (GST_V4L_IS_OPEN(v4lelement)) { if (!gst_v4l_set_picture(v4lelement, V4L_PICTURE_HUE, v4lelement->hue)) return; } break; case ARG_BRIGHTNESS: v4lelement->brightness = g_value_get_int(value); if (GST_V4L_IS_OPEN(v4lelement)) { if (!gst_v4l_set_picture(v4lelement, V4L_PICTURE_BRIGHTNESS, v4lelement->brightness)) return; } break; case ARG_CONTRAST: v4lelement->contrast = g_value_get_int(value); if (GST_V4L_IS_OPEN(v4lelement)) { if (!gst_v4l_set_picture(v4lelement, V4L_PICTURE_CONTRAST, v4lelement->contrast)) return; } break; case ARG_SATURATION: v4lelement->saturation = g_value_get_int(value); if (GST_V4L_IS_OPEN(v4lelement)) { if (!gst_v4l_set_picture(v4lelement, V4L_PICTURE_SATURATION, v4lelement->saturation)) return; } break; case ARG_DEVICE: if (GST_V4L_IS_OPEN(v4lelement)) break; /* only set when *not* open */ 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; gint temp_i = 0; gulong temp_ul = 0; /* it's not null if we got it, but it might not be ours */ g_return_if_fail(GST_IS_V4LELEMENT(object)); v4lelement = GST_V4LELEMENT(object); switch (prop_id) { case ARG_CHANNEL: if (GST_V4L_IS_OPEN(v4lelement)) gst_v4l_get_chan_norm(v4lelement, &temp_i, NULL); g_value_set_int(value, temp_i); break; case ARG_CHANNEL_NAME: if (GST_V4L_IS_OPEN(v4lelement)) g_value_set_string(value, g_strdup(v4lelement->vchan.name)); else g_value_set_string(value, g_strdup("Unknown")); break; case ARG_NORM: if (GST_V4L_IS_OPEN(v4lelement)) gst_v4l_get_chan_norm(v4lelement, NULL, &temp_i); g_value_set_int(value, temp_i); break; case ARG_NORM_NAME: if (GST_V4L_IS_OPEN(v4lelement)) { gst_v4l_get_chan_norm(v4lelement, NULL, &temp_i); g_value_set_string(value, g_strdup(norm_name[temp_i])); } else g_value_set_string(value, g_strdup("Unknwon")); break; case ARG_HAS_TUNER: g_value_set_boolean(value, FALSE); if (GST_V4L_IS_OPEN(v4lelement)) if (gst_v4l_has_tuner(v4lelement)) g_value_set_boolean(value, TRUE); break; case ARG_FREQUENCY: if (GST_V4L_IS_OPEN(v4lelement)) if (gst_v4l_has_tuner(v4lelement)) gst_v4l_get_frequency(v4lelement, &temp_ul); g_value_set_ulong(value, temp_ul); break; case ARG_HAS_AUDIO: g_value_set_boolean(value, FALSE); if (GST_V4L_IS_OPEN(v4lelement)) if (gst_v4l_has_audio(v4lelement)) g_value_set_boolean(value, TRUE); break; case ARG_MUTE: if (GST_V4L_IS_OPEN(v4lelement)) if (gst_v4l_has_audio(v4lelement)) gst_v4l_get_audio(v4lelement, V4L_AUDIO_MUTE, &temp_i); g_value_set_boolean(value, temp_i?TRUE:FALSE); break; case ARG_MODE: if (GST_V4L_IS_OPEN(v4lelement)) if (gst_v4l_has_tuner(v4lelement)) gst_v4l_get_audio(v4lelement, V4L_AUDIO_MODE, &temp_i); g_value_set_int(value, temp_i); break; case ARG_VOLUME: if (GST_V4L_IS_OPEN(v4lelement)) if (gst_v4l_has_tuner(v4lelement)) gst_v4l_get_audio(v4lelement, V4L_AUDIO_VOLUME, &temp_i); g_value_set_int(value, temp_i); break; case ARG_HUE: if (GST_V4L_IS_OPEN(v4lelement)) gst_v4l_get_picture(v4lelement, V4L_PICTURE_HUE, &temp_i); g_value_set_int(value, temp_i); break; case ARG_BRIGHTNESS: if (GST_V4L_IS_OPEN(v4lelement)) gst_v4l_get_picture(v4lelement, V4L_PICTURE_BRIGHTNESS, &temp_i); g_value_set_int(value, temp_i); break; case ARG_CONTRAST: if (GST_V4L_IS_OPEN(v4lelement)) gst_v4l_get_picture(v4lelement, V4L_PICTURE_CONTRAST, &temp_i); g_value_set_int(value, temp_i); break; case ARG_SATURATION: if (GST_V4L_IS_OPEN(v4lelement)) gst_v4l_get_picture(v4lelement, V4L_PICTURE_SATURATION, &temp_i); g_value_set_int(value, temp_i); break; case ARG_DEVICE: g_value_set_string(value, g_strdup(v4lelement->videodev?v4lelement->videodev:"/dev/video")); break; case ARG_DEVICE_NAME: if (GST_V4L_IS_OPEN(v4lelement)) g_value_set_string(value, g_strdup(v4lelement->vcap.name)); else g_value_set_string(value, g_strdup("None")); break; case ARG_DEVICE_IS_CAPTURE: g_value_set_boolean(value, FALSE); if (GST_V4L_IS_OPEN(v4lelement)) g_value_set_boolean(value, v4lelement->vcap.type & VID_TYPE_CAPTURE); break; case ARG_DEVICE_IS_OVERLAY: g_value_set_boolean(value, FALSE); if (GST_V4L_IS_OPEN(v4lelement)) g_value_set_boolean(value, v4lelement->vcap.type & VID_TYPE_OVERLAY); break; case ARG_DEVICE_IS_MJPEG_CAPTURE: g_value_set_boolean(value, FALSE); if (GST_V4L_IS_OPEN(v4lelement)) g_value_set_boolean(value, v4lelement->vcap.type & VID_TYPE_MJPEG_ENCODER); break; case ARG_DEVICE_IS_MJPEG_PLAYBACK: g_value_set_boolean(value, FALSE); if (GST_V4L_IS_OPEN(v4lelement)) g_value_set_boolean(value, v4lelement->vcap.type & VID_TYPE_MJPEG_DECODER); break; case ARG_DEVICE_IS_MPEG_CAPTURE: g_value_set_boolean(value, FALSE); if (GST_V4L_IS_OPEN(v4lelement)) g_value_set_boolean(value, v4lelement->vcap.type & VID_TYPE_MPEG_ENCODER); break; case ARG_DEVICE_IS_MPEG_PLAYBACK: g_value_set_boolean(value, FALSE); if (GST_V4L_IS_OPEN(v4lelement)) g_value_set_boolean(value, v4lelement->vcap.type & VID_TYPE_MPEG_DECODER); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static GstElementStateReturn gst_v4lelement_change_state (GstElement *element) { GstV4lElement *v4lelement; g_return_val_if_fail(GST_IS_V4LELEMENT(element), GST_STATE_FAILURE); v4lelement = GST_V4LELEMENT(element); /* if going down into NULL state, close the device if it's open * if going to READY, open the device (and set some options) */ switch (GST_STATE_TRANSITION(element)) { case GST_STATE_NULL_TO_READY: { int n, temp; if (!gst_v4l_open(v4lelement)) return GST_STATE_FAILURE; /* now, sync options */ if (v4lelement->norm >= VIDEO_MODE_PAL && v4lelement->norm < VIDEO_MODE_AUTO && v4lelement->channel >= 0) { if (!gst_v4l_set_chan_norm(v4lelement, v4lelement->channel, v4lelement->norm)) return GST_STATE_FAILURE; } if (v4lelement->frequency > 0 && gst_v4l_has_tuner(v4lelement)) { if (!gst_v4l_set_frequency(v4lelement, v4lelement->frequency)) return GST_STATE_FAILURE; } for (n=V4L_AUDIO_VOLUME;n<=V4L_AUDIO_MODE;n++) { switch (n) { case V4L_AUDIO_MUTE: temp = v4lelement->mute; break; case V4L_AUDIO_VOLUME: temp = v4lelement->volume; break; case V4L_AUDIO_MODE: temp = v4lelement->mode; break; } if (temp >= 0 && gst_v4l_has_audio(v4lelement)) { if (!gst_v4l_set_audio(v4lelement, n, temp)) return GST_STATE_FAILURE; } } for (n=V4L_PICTURE_HUE;n<=V4L_PICTURE_SATURATION;n++) { switch (n) { case V4L_PICTURE_HUE: temp = v4lelement->hue; break; case V4L_PICTURE_BRIGHTNESS: temp = v4lelement->brightness; break; case V4L_PICTURE_SATURATION: temp = v4lelement->saturation; break; case V4L_PICTURE_CONTRAST: temp = v4lelement->contrast; break; } if (temp >= 0) { if (!gst_v4l_set_picture(v4lelement, n, temp)) return GST_STATE_FAILURE; } } } break; case GST_STATE_READY_TO_NULL: if (!gst_v4l_close(v4lelement)) return GST_STATE_FAILURE; break; } if (GST_ELEMENT_CLASS(parent_class)->change_state) return GST_ELEMENT_CLASS(parent_class)->change_state(element); return GST_STATE_SUCCESS; } static gboolean plugin_init (GModule *module, GstPlugin *plugin) { GstElementFactory *factory; /* create an elementfactory for the v4lelement */ factory = gst_elementfactory_new("v4lelement", GST_TYPE_V4LELEMENT, &gst_v4lelement_details); g_return_val_if_fail(factory != NULL, FALSE); gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory)); return TRUE; } GstPluginDesc plugin_desc = { GST_VERSION_MAJOR, GST_VERSION_MINOR, "v4lelement", plugin_init };