libxrdp: started adding planar bitmap compression

libxrdp/Makefile.am

@@ -57,6 +57,7 @@ libxrdp_la_SOURCES = \
   xrdp_sec.c \
   xrdp_tcp.c \
   xrdp_bitmap_compress.c \
+  xrdp_bitmap32_compress.c \
   xrdp_jpeg_compress.c \
   xrdp_orders_rail.c \
   xrdp_mppc_enc.c

libxrdp/libxrdp.h

@@ -469,6 +469,11 @@ xrdp_bitmap_compress(char* in_data, int width, int height,
                      int start_line, struct stream* temp_s,
                      int e);
 int APP_CC
+xrdp_bitmap32_compress(char* in_data, int width, int height,
+                       struct stream* s, int bpp, int byte_limit,
+                       int start_line, struct stream* temp_s,
+                       int e);
+int APP_CC
 xrdp_jpeg_compress(void *handle, char* in_data, int width, int height,
                    struct stream* s, int bpp, int byte_limit,
                    int start_line, struct stream* temp_s,

libxrdp/xrdp_bitmap32_compress.c

@@ -0,0 +1,32 @@
+/**
+ * xrdp: A Remote Desktop Protocol server.
+ *
+ * Copyright (C) Jay Sorg 2014
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * planar bitmap compressor
+ * 32 bpp compression
+ */
+
+#include "libxrdp.h"
+
+/*****************************************************************************/
+int APP_CC
+xrdp_bitmap32_compress(char *in_data, int width, int height,
+                       struct stream *s, int bpp, int byte_limit,
+                       int start_line, struct stream *temp_s,
+                       int e)
+{
+    return 0;
+}

libxrdp/xrdp_orders.c

@@ -2570,8 +2570,16 @@ xrdp_orders_send_bitmap2(struct xrdp_orders *self,
     init_stream(temp_s, 16384);
     p = s->p;
     i = height;
-    lines_sending = xrdp_bitmap_compress(data, width, height, s, bpp, 16384,
-                                         i - 1, temp_s, e);
+    if (bpp > 24)
+    {
+        lines_sending = xrdp_bitmap32_compress(data, width, height, s, bpp, 16384,
+                                               i - 1, temp_s, e);
+    }
+    else
+    {
+        lines_sending = xrdp_bitmap_compress(data, width, height, s, bpp, 16384,
+                                             i - 1, temp_s, e);
+    }
 
     if (lines_sending != height)
     {