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-rw-r--r--gst/librfb/gstrfbsrc.c554
1 files changed, 554 insertions, 0 deletions
diff --git a/gst/librfb/gstrfbsrc.c b/gst/librfb/gstrfbsrc.c
new file mode 100644
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+++ b/gst/librfb/gstrfbsrc.c
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+/* GStreamer
+ * Copyright (C) <2004> David A. Schleef <ds@schleef.org>
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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 <gst/gst.h>
+#include <gst/video/video.h>
+
+#include <string.h>
+#include <stdlib.h>
+
+#include <librfb/rfb.h>
+
+
+#define GST_TYPE_RFBSRC \
+ (gst_rfbsrc_get_type())
+#define GST_RFBSRC(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RFBSRC,GstRfbsrc))
+#define GST_RFBSRC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RFBSRC,GstRfbsrc))
+#define GST_IS_RFBSRC(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RFBSRC))
+#define GST_IS_RFBSRC_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RFBSRC))
+
+typedef struct _GstRfbsrc GstRfbsrc;
+typedef struct _GstRfbsrcClass GstRfbsrcClass;
+
+struct _GstRfbsrc
+{
+ GstElement element;
+
+ GstPad *srcpad;
+
+ RfbDecoder *decoder;
+
+ char *server;
+ int port;
+
+ guint8 *frame;
+ gboolean go;
+ gboolean inter;
+
+ unsigned int button_mask;
+
+ double framerate;
+};
+
+struct _GstRfbsrcClass
+{
+ GstElementClass parent_class;
+};
+
+GType
+gst_rfbsrc_get_type (void)
+ G_GNUC_CONST;
+
+
+
+ static GstElementDetails rfbsrc_details =
+ GST_ELEMENT_DETAILS ("Video test source",
+ "Source/Video",
+ "Creates a test video stream",
+ "David A. Schleef <ds@schleef.org>");
+
+/* GstRfbsrc signals and args */
+ enum
+ {
+ /* FILL ME */
+ LAST_SIGNAL
+ };
+
+ enum
+ {
+ ARG_0,
+ ARG_SERVER,
+ ARG_PORT,
+ /* FILL ME */
+ };
+
+ static void gst_rfbsrc_base_init (gpointer g_class);
+ static void gst_rfbsrc_class_init (GstRfbsrcClass * klass);
+ static void gst_rfbsrc_init (GstRfbsrc * rfbsrc);
+ static GstElementStateReturn gst_rfbsrc_change_state (GstElement *
+ element);
+
+ static void gst_rfbsrc_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+ static void gst_rfbsrc_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+ static GstData *gst_rfbsrc_get (GstPad * pad);
+
+ static const GstQueryType *gst_rfbsrc_get_query_types (GstPad * pad);
+ static gboolean gst_rfbsrc_src_query (GstPad * pad,
+ GstQueryType type, GstFormat * format, gint64 * value);
+ static void gst_rfbsrc_paint_rect (RfbDecoder * decoder, int x, int y,
+ int w, int h, guint8 * data);
+ static gboolean gst_rfbsrc_handle_src_event (GstPad * pad,
+ GstEvent * event);
+
+ static GstCaps *gst_rfbsrc_getcaps (GstPad * pad);
+ static GstPadLinkReturn gst_rfbsrc_link (GstPad * pad,
+ const GstCaps * caps);
+ static GstCaps *gst_rfbsrc_fixate (GstPad * pad, const GstCaps * caps);
+
+ static GstElementClass *parent_class = NULL;
+
+
+ static GstStaticPadTemplate gst_rfbsrc_src_template =
+ GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("video/x-raw-rgb, "
+ "bpp = (int) 32, "
+ "depth = (int) 24, "
+ "endianness = (int) BIG_ENDIAN, "
+ "red_mask = (int) 0x0000ff00, "
+ "green_mask = (int) 0x00ff0000, "
+ "blue_mask = (int) 0xff000000, "
+ "width = [ 16, 4096 ], "
+ "height = [ 16, 4096 ], " "framerate = [ 1.0, 60.0] ")
+ );
+
+GType
+gst_rfbsrc_get_type (void)
+{
+ static GType rfbsrc_type = 0;
+
+ if (!rfbsrc_type) {
+ static const GTypeInfo rfbsrc_info = {
+ sizeof (GstRfbsrcClass),
+ gst_rfbsrc_base_init,
+ NULL,
+ (GClassInitFunc) gst_rfbsrc_class_init,
+ NULL,
+ NULL,
+ sizeof (GstRfbsrc),
+ 0,
+ (GInstanceInitFunc) gst_rfbsrc_init,
+ };
+
+ rfbsrc_type =
+ g_type_register_static (GST_TYPE_ELEMENT, "GstRfbsrc", &rfbsrc_info, 0);
+ }
+ return rfbsrc_type;
+}
+
+static void
+gst_rfbsrc_base_init (gpointer g_class)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_set_details (element_class, &rfbsrc_details);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_rfbsrc_src_template));
+}
+
+static void
+gst_rfbsrc_class_init (GstRfbsrcClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+#if 0
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_WIDTH,
+ g_param_spec_int ("width", "width", "Default width",
+ 1, G_MAXINT, 320, G_PARAM_READWRITE));
+#endif
+
+ parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+ g_object_class_install_property (gobject_class, ARG_SERVER,
+ g_param_spec_string ("server", "Server", "Server",
+ "127.0.0.1", G_PARAM_READWRITE));
+ g_object_class_install_property (gobject_class, ARG_PORT,
+ g_param_spec_int ("port", "Port", "Port",
+ 1, 65535, 5900, G_PARAM_READWRITE));
+
+ gobject_class->set_property = gst_rfbsrc_set_property;
+ gobject_class->get_property = gst_rfbsrc_get_property;
+
+ gstelement_class->change_state = gst_rfbsrc_change_state;
+}
+
+static GstElementStateReturn
+gst_rfbsrc_change_state (GstElement * element)
+{
+ GstRfbsrc *rfbsrc;
+
+ rfbsrc = GST_RFBSRC (element);
+
+ switch (GST_STATE_TRANSITION (element)) {
+ case GST_STATE_NULL_TO_READY:
+ rfbsrc->decoder = rfb_decoder_new ();
+ rfb_decoder_connect_tcp (rfbsrc->decoder, rfbsrc->server, rfbsrc->port);
+ rfbsrc->decoder->paint_rect = gst_rfbsrc_paint_rect;
+ rfbsrc->decoder->decoder_private = rfbsrc;
+ break;
+ case GST_STATE_READY_TO_PAUSED:
+ break;
+ case GST_STATE_PAUSED_TO_PLAYING:
+ break;
+ case GST_STATE_PLAYING_TO_PAUSED:
+ break;
+ case GST_STATE_PAUSED_TO_READY:
+ //rfbsrc->timestamp_offset = 0;
+ //rfbsrc->n_frames = 0;
+ break;
+ case GST_STATE_READY_TO_NULL:
+ if (rfbsrc->frame) {
+ g_free (rfbsrc->frame);
+ rfbsrc->frame = NULL;
+ }
+ break;
+ }
+
+ return parent_class->change_state (element);
+}
+
+static void
+gst_rfbsrc_init (GstRfbsrc * rfbsrc)
+{
+ GST_DEBUG ("gst_rfbsrc_init");
+
+ rfbsrc->srcpad =
+ gst_pad_new_from_template (gst_static_pad_template_get
+ (&gst_rfbsrc_src_template), "src");
+ gst_element_add_pad (GST_ELEMENT (rfbsrc), rfbsrc->srcpad);
+ gst_pad_set_getcaps_function (rfbsrc->srcpad, gst_rfbsrc_getcaps);
+ gst_pad_set_link_function (rfbsrc->srcpad, gst_rfbsrc_link);
+ gst_pad_set_fixate_function (rfbsrc->srcpad, gst_rfbsrc_fixate);
+ gst_pad_set_get_function (rfbsrc->srcpad, gst_rfbsrc_get);
+ gst_pad_set_query_function (rfbsrc->srcpad, gst_rfbsrc_src_query);
+ gst_pad_set_query_type_function (rfbsrc->srcpad, gst_rfbsrc_get_query_types);
+ gst_pad_set_event_function (rfbsrc->srcpad, gst_rfbsrc_handle_src_event);
+
+ rfbsrc->server = g_strdup ("127.0.0.1");
+ rfbsrc->port = 5900;
+}
+
+static GstCaps *
+gst_rfbsrc_getcaps (GstPad * pad)
+{
+ GstRfbsrc *rfbsrc;
+ GstCaps *caps;
+
+ rfbsrc = GST_RFBSRC (gst_pad_get_parent (pad));
+
+ caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
+
+ if (rfbsrc->decoder && rfbsrc->decoder->inited) {
+ gst_caps_set_simple (caps,
+ "width", G_TYPE_INT, rfbsrc->decoder->width,
+ "height", G_TYPE_INT, rfbsrc->decoder->height, NULL);
+ }
+
+ return caps;
+}
+
+static GstCaps *
+gst_rfbsrc_fixate (GstPad * pad, const GstCaps * caps)
+{
+ GstStructure *structure;
+ GstCaps *newcaps;
+
+ if (gst_caps_get_size (caps) > 1)
+ return NULL;
+
+ newcaps = gst_caps_copy (caps);
+ structure = gst_caps_get_structure (newcaps, 0);
+
+ if (gst_caps_structure_fixate_field_nearest_double (structure, "framerate",
+ 30.0)) {
+ return newcaps;
+ }
+
+ gst_caps_free (newcaps);
+ return NULL;
+}
+
+static GstPadLinkReturn
+gst_rfbsrc_link (GstPad * pad, const GstCaps * caps)
+{
+ GstRfbsrc *rfbsrc;
+ GstStructure *structure;
+
+ rfbsrc = GST_RFBSRC (gst_pad_get_parent (pad));
+
+ structure = gst_caps_get_structure (caps, 0);
+
+ gst_structure_get_double (structure, "framerate", &rfbsrc->framerate);
+
+ return GST_PAD_LINK_OK;
+}
+
+static const GstQueryType *
+gst_rfbsrc_get_query_types (GstPad * pad)
+{
+ static const GstQueryType query_types[] = {
+ GST_QUERY_POSITION,
+ 0,
+ };
+
+ return query_types;
+}
+
+static gboolean
+gst_rfbsrc_src_query (GstPad * pad,
+ GstQueryType type, GstFormat * format, gint64 * value)
+{
+ gboolean res = FALSE;
+
+ //GstRfbsrc *rfbsrc = GST_RFBSRC (gst_pad_get_parent (pad));
+
+ switch (type) {
+ case GST_QUERY_POSITION:
+ switch (*format) {
+ case GST_FORMAT_TIME:
+ //*value = rfbsrc->n_frames * GST_SECOND / (double) rfbsrc->rate;
+ res = TRUE;
+ break;
+ case GST_FORMAT_DEFAULT: /* frames */
+ //*value = rfbsrc->n_frames;
+ res = TRUE;
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return res;
+}
+
+static gboolean
+gst_rfbsrc_handle_src_event (GstPad * pad, GstEvent * event)
+{
+ GstRfbsrc *rfbsrc;
+ double x, y;
+ int button;
+ GstStructure *structure;
+ const char *event_type;
+
+ rfbsrc = GST_RFBSRC (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_NAVIGATION:
+ structure = event->event_data.structure.structure;
+ event_type = gst_structure_get_string (structure, "event");
+ gst_structure_get_double (structure, "pointer_x", &x);
+ gst_structure_get_double (structure, "pointer_y", &y);
+ button = 0;
+
+ if (strcmp (event_type, "key-press") == 0) {
+ const char *key = gst_structure_get_string (structure, "key");
+
+ rfb_decoder_send_key_event (rfbsrc->decoder, key[0], 1);
+ rfb_decoder_send_key_event (rfbsrc->decoder, key[0], 0);
+ } else if (strcmp (event_type, "mouse-move") == 0) {
+ rfb_decoder_send_pointer_event (rfbsrc->decoder, rfbsrc->button_mask,
+ (int) x, (int) y);
+ } else if (strcmp (event_type, "mouse-button-release") == 0) {
+ rfbsrc->button_mask &= ~(1 << button);
+ rfb_decoder_send_pointer_event (rfbsrc->decoder, rfbsrc->button_mask,
+ (int) x, (int) y);
+ } else if (strcmp (event_type, "mouse-button-press") == 0) {
+ rfbsrc->button_mask |= (1 << button);
+ rfb_decoder_send_pointer_event (rfbsrc->decoder, rfbsrc->button_mask,
+ (int) x, (int) y);
+ }
+ break;
+ default:
+ break;
+ }
+
+ return TRUE;
+}
+
+static void
+gst_rfbsrc_paint_rect (RfbDecoder * decoder, int x, int y, int w, int h,
+ guint8 * data)
+{
+ int i, j;
+ guint8 *frame;
+ guint8 color;
+ GstRfbsrc *rfbsrc;
+ int width;
+ int offset;
+
+ GST_DEBUG ("painting %d,%d (%dx%d)\n", x, y, w, h);
+ rfbsrc = GST_RFBSRC (decoder->decoder_private);
+
+ frame = rfbsrc->frame;
+ width = decoder->width;
+ for (j = 0; j < h; j++) {
+ for (i = 0; i < w; i++) {
+ color = data[j * w + i];
+
+#define RGB332_R(x) ((((x)&0x07) * 0x124)>>3)
+#define RGB332_G(x) ((((x)&0x38) * 0x124)>>6)
+#define RGB332_B(x) ((((x)&0xc0) * 0x149)>>8)
+ offset = ((j + x) * width + (i + x)) * 4;
+ frame[offset + 0] = RGB332_B (color);
+ frame[offset + 1] = RGB332_G (color);
+ frame[offset + 2] = RGB332_R (color);
+ frame[offset + 3] = 0;
+ }
+ }
+
+ rfbsrc->go = FALSE;
+}
+
+static GstData *
+gst_rfbsrc_get (GstPad * pad)
+{
+ GstRfbsrc *rfbsrc;
+ gulong newsize;
+ GstBuffer *buf;
+ RfbDecoder *decoder;
+
+ GST_DEBUG ("gst_rfbsrc_get");
+
+ g_return_val_if_fail (pad != NULL, NULL);
+ g_return_val_if_fail (GST_IS_PAD (pad), NULL);
+
+ rfbsrc = GST_RFBSRC (gst_pad_get_parent (pad));
+ decoder = rfbsrc->decoder;
+
+ if (!decoder->inited) {
+ while (!decoder->inited) {
+ rfb_decoder_iterate (decoder);
+ }
+
+ gst_pad_renegotiate (rfbsrc->srcpad);
+
+ if (rfbsrc->frame)
+ g_free (rfbsrc->frame);
+ rfbsrc->frame = g_malloc (decoder->width * decoder->height * 4);
+
+ GST_DEBUG ("red_mask = %08x\n", decoder->red_max << decoder->red_shift);
+ GST_DEBUG ("green_mask = %08x\n",
+ decoder->green_max << decoder->green_shift);
+ GST_DEBUG ("blue_mask = %08x\n", decoder->blue_max << decoder->blue_shift);
+ rfbsrc->inter = FALSE;
+ }
+
+ rfb_decoder_send_update_request (decoder, rfbsrc->inter, 0, 0, decoder->width,
+ decoder->height);
+ //rfbsrc->inter = TRUE;
+
+ rfbsrc->go = TRUE;
+ while (rfbsrc->go) {
+ rfb_decoder_iterate (decoder);
+ GST_DEBUG ("iterate...\n");
+ }
+
+ newsize = decoder->width * decoder->height * 4;
+ g_return_val_if_fail (newsize > 0, NULL);
+
+ GST_DEBUG ("size=%ld %dx%d", newsize, decoder->width, decoder->height);
+
+ buf = gst_buffer_new_and_alloc (newsize);
+ g_return_val_if_fail (GST_BUFFER_DATA (buf) != NULL, NULL);
+
+ memcpy (GST_BUFFER_DATA (buf), rfbsrc->frame, newsize);
+
+ return GST_DATA (buf);
+}
+
+static void
+gst_rfbsrc_set_property (GObject * object, guint prop_id, const GValue * value,
+ GParamSpec * pspec)
+{
+ GstRfbsrc *src;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail (GST_IS_RFBSRC (object));
+ src = GST_RFBSRC (object);
+
+ GST_DEBUG ("gst_rfbsrc_set_property");
+ switch (prop_id) {
+ case ARG_SERVER:
+ src->server = g_strdup (g_value_get_string (value));
+ break;
+ case ARG_PORT:
+ src->port = g_value_get_int (value);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+gst_rfbsrc_get_property (GObject * object, guint prop_id, GValue * value,
+ GParamSpec * pspec)
+{
+ GstRfbsrc *src;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail (GST_IS_RFBSRC (object));
+ src = GST_RFBSRC (object);
+
+ switch (prop_id) {
+ case ARG_SERVER:
+ g_value_set_string (value, src->server);
+ break;
+ case ARG_PORT:
+ g_value_set_int (value, src->port);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ return gst_element_register (plugin, "rfbsrc", GST_RANK_NONE,
+ GST_TYPE_RFBSRC);
+}
+
+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, GST_ORIGIN)