gst/librfb/gstrfbsrc.c: don't forget to handle the offset's

Original commit message from CVS:
* gst/librfb/gstrfbsrc.c:
don't forget to handle the offset's
* gst/librfb/rfbdecoder.c:
* gst/librfb/rfbdecoder.h:
precalculate some many used values

ChangeLog

@@ -1,3 +1,11 @@
+2007-11-15  Thijs Vermeir  <thijsvermeir@gmail.com>
+
+	* gst/librfb/gstrfbsrc.c:
+	don't forget to handle the offset's
+	* gst/librfb/rfbdecoder.c:
+	* gst/librfb/rfbdecoder.h:
+	precalculate some many used values
+
 2007-11-15  Thijs Vermeir  <thijsvermeir@gmail.com>
 
 	patch by: Armando Taffarel Neto <taffarel@solis.coop.br>

gst/librfb/gstrfbsrc.c

@@ -337,14 +337,18 @@ gst_rfb_src_start (GstBaseSrc * bsrc)
   decoder->prev_frame = g_malloc (bsrc->blocksize);
   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->width, decoder->height);
+      decoder->rect_width, decoder->rect_height);
 
   caps =
       gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (bsrc)));
-  gst_caps_set_simple (caps, "width", G_TYPE_INT, decoder->width, "height",
-      G_TYPE_INT, decoder->height, "bpp", G_TYPE_INT, decoder->bpp, "depth",
-      G_TYPE_INT, decoder->depth, "endianness", G_TYPE_INT,
+  gst_caps_set_simple (caps, "width", G_TYPE_INT, decoder->rect_width, "height",
+      G_TYPE_INT, decoder->rect_height, "bpp", G_TYPE_INT, decoder->bpp,
+      "depth", G_TYPE_INT, decoder->depth, "endianness", G_TYPE_INT,
       (decoder->big_endian ? 1234 : 4321), NULL);
   gst_pad_set_caps (GST_BASE_SRC_PAD (bsrc), caps);
   gst_caps_unref (caps);
@@ -425,6 +429,10 @@ gst_rfb_src_event (GstBaseSrc * bsrc, GstEvent * event)
       gst_structure_get_double (structure, "pointer_y", &y);
       button = 0;
 
+      /* we need to take care of the offset's */
+      x += src->decoder->offset_x;
+      y += src->decoder->offset_y;
+
       if (strcmp (event_type, "key-press") == 0) {
         const gchar *key = gst_structure_get_string (structure, "key");
 

gst/librfb/rfbdecoder.c

@@ -641,23 +641,22 @@ rfb_decoder_raw_encoding (RfbDecoder * decoder, gint start_x, gint start_y,
 {
   gint size;
   guint8 *frame, *buffer, *p;
-  guint32 raw_line_size, line_size;
+  guint32 raw_line_size;
 
-  size = rect_h * rect_w * decoder->bpp / 8;
+  raw_line_size = rect_w * decoder->bytespp;
+  size = rect_h * raw_line_size;
   GST_DEBUG ("Reading %d bytes", size);
   buffer = rfb_decoder_read (decoder, size);
 
-  line_size = decoder->rect_width * decoder->bpp / 8;
-  raw_line_size = rect_w * decoder->bpp / 8;
   frame =
       decoder->frame + (((start_y * decoder->rect_width) +
-          start_x) * decoder->bpp / 8);
+          start_x) * decoder->bytespp);
   p = buffer;
 
   while (rect_h--) {
     memcpy (frame, p, raw_line_size);
     p += raw_line_size;
-    frame += line_size;
+    frame += decoder->line_size;
   }
 
   g_free (buffer);
@@ -668,29 +667,30 @@ rfb_decoder_copyrect_encoding (RfbDecoder * decoder, gint start_x, gint start_y,
     gint rect_w, gint rect_h)
 {
   guint16 src_x, src_y;
-  guint32 src_offset;
-  guint32 dst_offset;
-  gint pos_y, max_y, line_width, copyrect_width;
+  gint line_width, copyrect_width;
   guint8 *buffer;
+  guint8 *src, *dst;
 
   buffer = rfb_decoder_read (decoder, 4);
-  max_y = start_y + rect_h;
 
-  src_x = RFB_GET_UINT16 (buffer);
-  src_y = RFB_GET_UINT16 (buffer + 2);
+  /* don't forget the offset */
+  src_x = RFB_GET_UINT16 (buffer) - decoder->offset_x;
+  src_y = RFB_GET_UINT16 (buffer + 2) - decoder->offset_y;
   GST_DEBUG ("Copyrect from %d %d", src_x, src_y);
 
-  dst_offset =
-      (((start_y - 1) * decoder->rect_width) + start_x) * decoder->bpp / 8;
-  src_offset = (((src_y - 1) * decoder->rect_width) + src_x) * decoder->bpp / 8;
-  line_width = decoder->rect_width * decoder->bpp / 8;
-  copyrect_width = rect_w * decoder->bpp / 8;
+  copyrect_width = rect_w * decoder->bytespp;
+  line_width = decoder->line_size;
+  src =
+      decoder->prev_frame + ((src_y * decoder->rect_width) +
+      src_x) * decoder->bytespp;
+  dst =
+      decoder->frame + ((start_y * decoder->rect_width) +
+      start_x) * decoder->bytespp;
 
-  for (pos_y = start_y; pos_y < max_y; pos_y++) {
-    dst_offset += line_width;
-    src_offset += line_width;
-    memcpy (decoder->frame + dst_offset, decoder->prev_frame + src_offset,
-        copyrect_width);
+  while (rect_h--) {
+    memcpy (dst, src, copyrect_width);
+    src += line_width;
+    dst += line_width;
   }
 
   g_free (buffer);

gst/librfb/rfbdecoder.h

@@ -69,6 +69,10 @@ struct _RfbDecoder
   guint rect_height;
 
   gint n_rects;
+
+  /* some many used values */
+  guint bytespp;
+  guint line_size;
 };
 
 #if 0