Reduce small block size to 32x32, and parametrize (#defines instead of hardcoding)

diff --git a/rdpsrv.c b/rdpsrv.c
index f8ef8f218e30af7f141e40e2eb29c1d416ee281f..cee8d77f17f4b3b5c038468e48e3d11306311578 100644 (file)
--- a/rdpsrv.c
+++ b/rdpsrv.c
@@ -289,13 +289,16 @@ struct vnc_rectangle {
        unsigned int encoding;
 };
 
+#define SBX 32
+#define SBY 32
+
 void handle_vnc_fbupdate(int vnc_sock)
 {
        struct vnc_rectangle rect;
        unsigned char *data, *ptr, *src, *dst;
        unsigned short num_rect;
        int ret, data_left, i, xt, yt;
-       unsigned char smallblock[64 * 64 * 3];
+       unsigned char smallblock[SBX * SBY * 3];
 
        if (read(vnc_sock, &num_rect, 2) != 2)
                error("short read on num_rect\n");
@@ -330,19 +333,19 @@ void handle_vnc_fbupdate(int vnc_sock)
                // push our 32-bit RGB data into small enough chunks
                // (64x64) so we are sure we can send them without
                // everything crashing and stuff :-)
-               for (yt = 0; yt < (height + 63) / 64; ++yt) {
-                       for (xt = 0; xt < (width + 63) / 64; ++xt) {
+               for (yt = 0; yt < (height + (SBY-1)) / SBY; ++yt) {
+                       for (xt = 0; xt < (width + (SBX-1)) / SBX; ++xt) {
                                int x, y;
-                               int bw = width - xt * 64;
-                               int bh = height - yt * 64;
-                               if (bw > 64)
-                                       bw = 64;
-                               if (bh > 64)
-                                       bh = 64;
+                               int bw = width - xt * SBX;
+                               int bh = height - yt * SBY;
+                               if (bw > SBX)
+                                       bw = SBX;
+                               if (bh > SBY)
+                                       bh = SBY;
                        
                                dst = smallblock;
                                for (y = 0; y < bh; ++y) {
-                                       src = data + ((yt * 64 + (bh - 1 - y)) * width + (xt * 64)) * 4;
+                                       src = data + ((yt * SBY + (bh - 1 - y)) * width + (xt * SBX)) * 4;
                                        for (x = 0; x < bw; ++x) {
                                                *dst++ = *src++;
                                                *dst++ = *src++;
@@ -351,7 +354,7 @@ void handle_vnc_fbupdate(int vnc_sock)
                                        }
                                }
 
-                               rdp_send_bitmap_update(ntohs(rect.x) + xt * 64, ntohs(rect.y) + yt * 64, bw, bh, smallblock);
+                               rdp_send_bitmap_update(ntohs(rect.x) + xt * SBX, ntohs(rect.y) + yt * SBY, bw, bh, smallblock);
                        }
                }