/* GStreamer * Copyright (C) <2007> Thijs Vermeir * Copyright (C) <2006> Andre Moreira Magalhaes * Copyright (C) <2004> David A. Schleef * Copyright (C) <1999> Erik Walthinsen * * 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstrfbsrc.h" #include #include #include #ifdef HAVE_X11 #include #endif enum { PROP_0, PROP_HOST, PROP_PORT, PROP_VERSION, PROP_PASSWORD, PROP_OFFSET_X, PROP_OFFSET_Y, PROP_WIDTH, PROP_HEIGHT, PROP_INCREMENTAL, PROP_USE_COPYRECT, PROP_SHARED, PROP_VIEWONLY }; GST_DEBUG_CATEGORY_STATIC (rfbsrc_debug); GST_DEBUG_CATEGORY (rfbdecoder_debug); #define GST_CAT_DEFAULT rfbsrc_debug static GstStaticPadTemplate gst_rfb_src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB") "; " GST_VIDEO_CAPS_MAKE ("BGR") "; " GST_VIDEO_CAPS_MAKE ("RGBx") "; " GST_VIDEO_CAPS_MAKE ("BGRx") "; " GST_VIDEO_CAPS_MAKE ("xRGB") "; " GST_VIDEO_CAPS_MAKE ("xBGR"))); static void gst_rfb_src_finalize (GObject * object); static void gst_rfb_src_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_rfb_src_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static gboolean gst_rfb_src_negotiate (GstBaseSrc * bsrc); static gboolean gst_rfb_src_stop (GstBaseSrc * bsrc); static gboolean gst_rfb_src_event (GstBaseSrc * bsrc, GstEvent * event); static gboolean gst_rfb_src_unlock (GstBaseSrc * bsrc); static gboolean gst_rfb_src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query); static GstFlowReturn gst_rfb_src_fill (GstPushSrc * psrc, GstBuffer * outbuf); #define gst_rfb_src_parent_class parent_class G_DEFINE_TYPE (GstRfbSrc, gst_rfb_src, GST_TYPE_PUSH_SRC); static void gst_rfb_src_class_init (GstRfbSrcClass * klass) { GObjectClass *gobject_class; GstBaseSrcClass *gstbasesrc_class; GstElementClass *gstelement_class; GstPushSrcClass *gstpushsrc_class; GST_DEBUG_CATEGORY_INIT (rfbsrc_debug, "rfbsrc", 0, "rfb src element"); GST_DEBUG_CATEGORY_INIT (rfbdecoder_debug, "rfbdecoder", 0, "rfb decoder"); gobject_class = (GObjectClass *) klass; gstbasesrc_class = (GstBaseSrcClass *) klass; gstpushsrc_class = (GstPushSrcClass *) klass; gobject_class->finalize = gst_rfb_src_finalize; gobject_class->set_property = gst_rfb_src_set_property; gobject_class->get_property = gst_rfb_src_get_property; g_object_class_install_property (gobject_class, PROP_HOST, g_param_spec_string ("host", "Host to connect to", "Host to connect to", "127.0.0.1", G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PORT, g_param_spec_int ("port", "Port", "Port", 1, 65535, 5900, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_VERSION, g_param_spec_string ("version", "RFB protocol version", "RFB protocol version", "3.3", G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PASSWORD, g_param_spec_string ("password", "Password for authentication", "Password for authentication", "", G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_OFFSET_X, g_param_spec_int ("offset-x", "x offset for screen scrapping", "x offset for screen scrapping", 0, 65535, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_OFFSET_Y, g_param_spec_int ("offset-y", "y offset for screen scrapping", "y offset for screen scrapping", 0, 65535, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_WIDTH, g_param_spec_int ("width", "width of screen", "width of screen", 0, 65535, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_HEIGHT, g_param_spec_int ("height", "height of screen", "height of screen", 0, 65535, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_INCREMENTAL, g_param_spec_boolean ("incremental", "Incremental updates", "Incremental updates", TRUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_USE_COPYRECT, g_param_spec_boolean ("use-copyrect", "Use copyrect encoding", "Use copyrect encoding", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_SHARED, g_param_spec_boolean ("shared", "Share desktop with other clients", "Share desktop with other clients", TRUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_VIEWONLY, g_param_spec_boolean ("view-only", "Only view the desktop", "only view the desktop", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gstbasesrc_class->negotiate = GST_DEBUG_FUNCPTR (gst_rfb_src_negotiate); gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_rfb_src_stop); gstbasesrc_class->event = GST_DEBUG_FUNCPTR (gst_rfb_src_event); gstbasesrc_class->unlock = GST_DEBUG_FUNCPTR (gst_rfb_src_unlock); gstpushsrc_class->fill = GST_DEBUG_FUNCPTR (gst_rfb_src_fill); gstbasesrc_class->decide_allocation = GST_DEBUG_FUNCPTR (gst_rfb_src_decide_allocation); gstelement_class = GST_ELEMENT_CLASS (klass); gst_element_class_add_static_pad_template (gstelement_class, &gst_rfb_src_template); gst_element_class_set_static_metadata (gstelement_class, "Rfb source", "Source/Video", "Creates a rfb video stream", "David A. Schleef , " "Andre Moreira Magalhaes , " "Thijs Vermeir "); } static void gst_rfb_src_init (GstRfbSrc * src) { GstBaseSrc *bsrc = GST_BASE_SRC (src); gst_pad_use_fixed_caps (GST_BASE_SRC_PAD (bsrc)); gst_base_src_set_live (bsrc, TRUE); gst_base_src_set_format (bsrc, GST_FORMAT_TIME); src->host = g_strdup ("127.0.0.1"); src->port = 5900; src->version_major = 3; src->version_minor = 3; src->incremental_update = TRUE; src->view_only = FALSE; src->decoder = rfb_decoder_new (); } static void gst_rfb_src_finalize (GObject * object) { GstRfbSrc *src = GST_RFB_SRC (object); g_free (src->host); if (src->decoder) { rfb_decoder_free (src->decoder); src->decoder = NULL; } G_OBJECT_CLASS (parent_class)->finalize (object); } static void gst_rfb_property_set_version (GstRfbSrc * src, gchar * value) { gchar *major; gchar *minor; g_return_if_fail (src != NULL); g_return_if_fail (value != NULL); major = g_strdup (value); minor = g_strrstr (value, "."); g_return_if_fail (minor != NULL); *minor++ = 0; g_return_if_fail (g_ascii_isdigit (*major) == TRUE); g_return_if_fail (g_ascii_isdigit (*minor) == TRUE); src->version_major = g_ascii_digit_value (*major); src->version_minor = g_ascii_digit_value (*minor); GST_DEBUG ("Version major : %d", src->version_major); GST_DEBUG ("Version minor : %d", src->version_minor); g_free (major); g_free (value); } static gchar * gst_rfb_property_get_version (GstRfbSrc * src) { return g_strdup_printf ("%d.%d", src->version_major, src->version_minor); } static void gst_rfb_src_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstRfbSrc *src = GST_RFB_SRC (object); switch (prop_id) { case PROP_HOST: src->host = g_strdup (g_value_get_string (value)); break; case PROP_PORT: src->port = g_value_get_int (value); break; case PROP_VERSION: gst_rfb_property_set_version (src, g_strdup (g_value_get_string (value))); break; case PROP_PASSWORD: g_free (src->decoder->password); src->decoder->password = g_strdup (g_value_get_string (value)); break; case PROP_OFFSET_X: src->decoder->offset_x = g_value_get_int (value); break; case PROP_OFFSET_Y: src->decoder->offset_y = g_value_get_int (value); break; case PROP_WIDTH: src->decoder->rect_width = g_value_get_int (value); break; case PROP_HEIGHT: src->decoder->rect_height = g_value_get_int (value); break; case PROP_INCREMENTAL: src->incremental_update = g_value_get_boolean (value); break; case PROP_USE_COPYRECT: src->decoder->use_copyrect = g_value_get_boolean (value); break; case PROP_SHARED: src->decoder->shared_flag = g_value_get_boolean (value); break; case PROP_VIEWONLY: src->view_only = g_value_get_boolean (value); break; default: break; } } static void gst_rfb_src_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstRfbSrc *src = GST_RFB_SRC (object); gchar *version; switch (prop_id) { case PROP_HOST: g_value_set_string (value, src->host); break; case PROP_PORT: g_value_set_int (value, src->port); break; case PROP_VERSION: version = gst_rfb_property_get_version (src); g_value_set_string (value, version); g_free (version); break; case PROP_OFFSET_X: g_value_set_int (value, src->decoder->offset_x); break; case PROP_OFFSET_Y: g_value_set_int (value, src->decoder->offset_y); break; case PROP_WIDTH: g_value_set_int (value, src->decoder->rect_width); break; case PROP_HEIGHT: g_value_set_int (value, src->decoder->rect_height); break; case PROP_INCREMENTAL: g_value_set_boolean (value, src->incremental_update); break; case PROP_USE_COPYRECT: g_value_set_boolean (value, src->decoder->use_copyrect); break; case PROP_SHARED: g_value_set_boolean (value, src->decoder->shared_flag); break; case PROP_VIEWONLY: g_value_set_boolean (value, src->view_only); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean gst_rfb_src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query) { GstBufferPool *pool = NULL; guint size, min = 1, max = 0; GstStructure *config; GstCaps *caps; GstVideoInfo info; gboolean ret; gst_query_parse_allocation (query, &caps, NULL); if (!caps || !gst_video_info_from_caps (&info, caps)) return FALSE; while (gst_query_get_n_allocation_pools (query) > 0) { gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max); /* TODO We restrict to the exact size as we don't support strides or * special padding */ if (size == info.size) break; gst_query_remove_nth_allocation_pool (query, 0); gst_object_unref (pool); pool = NULL; } if (pool == NULL) { /* we did not get a pool, make one ourselves then */ pool = gst_video_buffer_pool_new (); size = info.size; min = 1; max = 0; gst_query_add_allocation_pool (query, pool, size, min, max); } config = gst_buffer_pool_get_config (pool); gst_buffer_pool_config_set_params (config, caps, size, min, max); ret = gst_buffer_pool_set_config (pool, config); gst_object_unref (pool); return ret; } static gboolean gst_rfb_src_negotiate (GstBaseSrc * bsrc) { GstRfbSrc *src = GST_RFB_SRC (bsrc); RfbDecoder *decoder; GstCaps *caps; GstVideoInfo vinfo; GstVideoFormat vformat; guint32 red_mask, green_mask, blue_mask; gchar *stream_id = NULL; GstEvent *stream_start = NULL; decoder = src->decoder; if (decoder->inited) return TRUE; GST_DEBUG_OBJECT (src, "connecting to host %s on port %d", src->host, src->port); if (!rfb_decoder_connect_tcp (decoder, src->host, src->port)) { if (decoder->error != NULL) { GST_ELEMENT_ERROR (src, RESOURCE, READ, ("Could not connect to VNC server %s on port %d: %s", src->host, src->port, decoder->error->message), (NULL)); } else { GST_ELEMENT_ERROR (src, RESOURCE, READ, ("Could not connect to VNC server %s on port %d", src->host, src->port), (NULL)); } return FALSE; } while (!decoder->inited) { if (!rfb_decoder_iterate (decoder)) { if (decoder->error != NULL) { GST_ELEMENT_ERROR (src, RESOURCE, READ, ("Failed to setup VNC connection to host %s on port %d: %s", src->host, src->port, decoder->error->message), (NULL)); } else { GST_ELEMENT_ERROR (src, RESOURCE, READ, ("Failed to setup VNC connection to host %s on port %d", src->host, src->port), (NULL)); } return FALSE; } } stream_id = gst_pad_create_stream_id_printf (GST_BASE_SRC_PAD (bsrc), GST_ELEMENT (src), "%s:%d", src->host, src->port); stream_start = gst_event_new_stream_start (stream_id); g_free (stream_id); gst_pad_push_event (GST_BASE_SRC_PAD (bsrc), stream_start); decoder->rect_width = (decoder->rect_width ? decoder->rect_width : decoder->width); decoder->rect_height = (decoder->rect_height ? decoder->rect_height : decoder->height); decoder->decoder_private = src; /* calculate some many used values */ decoder->bytespp = decoder->bpp / 8; decoder->line_size = decoder->rect_width * decoder->bytespp; GST_DEBUG_OBJECT (src, "setting caps width to %d and height to %d", decoder->rect_width, decoder->rect_height); red_mask = decoder->red_max << decoder->red_shift; green_mask = decoder->green_max << decoder->green_shift; blue_mask = decoder->blue_max << decoder->blue_shift; vformat = gst_video_format_from_masks (decoder->depth, decoder->bpp, decoder->big_endian ? G_BIG_ENDIAN : G_LITTLE_ENDIAN, red_mask, green_mask, blue_mask, 0); gst_video_info_init (&vinfo); gst_video_info_set_format (&vinfo, vformat, decoder->rect_width, decoder->rect_height); decoder->frame = g_malloc (vinfo.size); if (decoder->use_copyrect) decoder->prev_frame = g_malloc (vinfo.size); caps = gst_video_info_to_caps (&vinfo); gst_base_src_set_caps (bsrc, caps); gst_caps_unref (caps); return TRUE; } static gboolean gst_rfb_src_stop (GstBaseSrc * bsrc) { GstRfbSrc *src = GST_RFB_SRC (bsrc); rfb_decoder_disconnect (src->decoder); if (src->decoder->frame) { g_free (src->decoder->frame); src->decoder->frame = NULL; } if (src->decoder->prev_frame) { g_free (src->decoder->prev_frame); src->decoder->prev_frame = NULL; } return TRUE; } static GstFlowReturn gst_rfb_src_fill (GstPushSrc * psrc, GstBuffer * outbuf) { GstRfbSrc *src = GST_RFB_SRC (psrc); RfbDecoder *decoder = src->decoder; GstMapInfo info; rfb_decoder_send_update_request (decoder, src->incremental_update, decoder->offset_x, decoder->offset_y, decoder->rect_width, decoder->rect_height); while (decoder->state != NULL) { if (!rfb_decoder_iterate (decoder)) { if (decoder->error != NULL) { GST_ELEMENT_ERROR (src, RESOURCE, READ, ("Error on VNC connection to host %s on port %d: %s", src->host, src->port, decoder->error->message), (NULL)); } else { GST_ELEMENT_ERROR (src, RESOURCE, READ, ("Error on setup VNC connection to host %s on port %d", src->host, src->port), (NULL)); } return GST_FLOW_ERROR; } } if (!gst_buffer_map (outbuf, &info, GST_MAP_WRITE)) { GST_ELEMENT_ERROR (src, RESOURCE, WRITE, ("Could not map the output frame"), (NULL)); return GST_FLOW_ERROR; } memcpy (info.data, decoder->frame, info.size); GST_BUFFER_PTS (outbuf) = gst_clock_get_time (GST_ELEMENT_CLOCK (src)) - GST_ELEMENT_CAST (src)->base_time; gst_buffer_unmap (outbuf, &info); return GST_FLOW_OK; } static gboolean gst_rfb_src_event (GstBaseSrc * bsrc, GstEvent * event) { GstRfbSrc *src = GST_RFB_SRC (bsrc); gdouble x, y; gint button; const GstStructure *structure; const gchar *event_type; gboolean key_event, key_press; key_event = FALSE; switch (GST_EVENT_TYPE (event)) { case GST_EVENT_NAVIGATION: /* if in view_only mode ignore the navigation event */ if (src->view_only) break; structure = gst_event_get_structure (event); event_type = gst_structure_get_string (structure, "event"); if (strcmp (event_type, "key-press") == 0) { key_event = key_press = TRUE; } else if (strcmp (event_type, "key-release") == 0) { key_event = TRUE; key_press = FALSE; } if (key_event) { #ifdef HAVE_X11 const gchar *key; KeySym key_sym; key = gst_structure_get_string (structure, "key"); key_sym = XStringToKeysym (key); if (key_sym != NoSymbol) rfb_decoder_send_key_event (src->decoder, key_sym, key_press); #endif break; } gst_structure_get_double (structure, "pointer_x", &x); gst_structure_get_double (structure, "pointer_y", &y); gst_structure_get_int (structure, "button", &button); /* we need to take care of the offset's */ x += src->decoder->offset_x; y += src->decoder->offset_y; if (strcmp (event_type, "mouse-move") == 0) { GST_LOG_OBJECT (src, "sending mouse-move event " "button_mask=%d, x=%d, y=%d", src->button_mask, (gint) x, (gint) y); rfb_decoder_send_pointer_event (src->decoder, src->button_mask, (gint) x, (gint) y); } else if (strcmp (event_type, "mouse-button-release") == 0) { src->button_mask &= ~(1 << (button - 1)); GST_LOG_OBJECT (src, "sending mouse-button-release event " "button_mask=%d, x=%d, y=%d", src->button_mask, (gint) x, (gint) y); rfb_decoder_send_pointer_event (src->decoder, src->button_mask, (gint) x, (gint) y); } else if (strcmp (event_type, "mouse-button-press") == 0) { src->button_mask |= (1 << (button - 1)); GST_LOG_OBJECT (src, "sending mouse-button-press event " "button_mask=%d, x=%d, y=%d", src->button_mask, (gint) x, (gint) y); rfb_decoder_send_pointer_event (src->decoder, src->button_mask, (gint) x, (gint) y); } break; default: break; } return TRUE; } static gboolean gst_rfb_src_unlock (GstBaseSrc * bsrc) { GstRfbSrc *src = GST_RFB_SRC (bsrc); g_cancellable_cancel (src->decoder->cancellable); return TRUE; } static gboolean plugin_init (GstPlugin * plugin) { return gst_element_register (plugin, "rfbsrc", GST_RANK_NONE, GST_TYPE_RFB_SRC); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, rfbsrc, "Connects to a VNC server and decodes RFB stream", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)