vnc: tight: split send_sub_rect

Split send_sub_rect in send_sub_rect_jpeg and send_sub_rect_nojpeg to
remove all these #ifdef CONFIG_JPEG.

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

ui/vnc-enc-tight.c

@@ -1452,34 +1452,39 @@ static void vnc_tight_stop(VncState *vs)
     vs->output = vs->tight.tmp;
 }
 
-static int send_sub_rect(VncState *vs, int x, int y, int w, int h)
+static int send_sub_rect_nojpeg(VncState *vs, int x, int y, int w, int h,
+                                int bg, int fg, int colors, VncPalette *palette)
 {
-    VncPalette *palette = NULL;
-    uint32_t bg = 0, fg = 0;
-    int colors;
-    int ret = 0;
-
-    vnc_framebuffer_update(vs, x, y, w, h, vs->tight.type);
+    int ret;
 
-    vnc_tight_start(vs);
-    vnc_raw_send_framebuffer_update(vs, x, y, w, h);
-    vnc_tight_stop(vs);
+    if (colors == 0) {
+        if (tight_detect_smooth_image(vs, w, h)) {
+            ret = send_gradient_rect(vs, x, y, w, h);
+        } else {
+            ret = send_full_color_rect(vs, x, y, w, h);
+        }
+    } else if (colors == 1) {
+        ret = send_solid_rect(vs);
+    } else if (colors == 2) {
+        ret = send_mono_rect(vs, x, y, w, h, bg, fg);
+    } else if (colors <= 256) {
+        ret = send_palette_rect(vs, x, y, w, h, palette);
+    }
+    return ret;
+}
 
-    colors = tight_fill_palette(vs, x, y, w * h, &fg, &bg, &palette);
+#ifdef CONFIG_VNC_JPEG
+static int send_sub_rect_jpeg(VncState *vs, int x, int y, int w, int h,
+                              int bg, int fg, int colors,
+                              VncPalette *palette)
+{
+    int ret;
 
     if (colors == 0) {
         if (tight_detect_smooth_image(vs, w, h)) {
-            if (vs->tight.quality == -1) {
-                ret = send_gradient_rect(vs, x, y, w, h);
-            } else {
-#ifdef CONFIG_VNC_JPEG
-                int quality = tight_conf[vs->tight.quality].jpeg_quality;
+            int quality = tight_conf[vs->tight.quality].jpeg_quality;
 
-                ret = send_jpeg_rect(vs, x, y, w, h, quality);
-#else
-                ret = send_full_color_rect(vs, x, y, w, h);
-#endif
-            }
+            ret = send_jpeg_rect(vs, x, y, w, h, quality);
         } else {
             ret = send_full_color_rect(vs, x, y, w, h);
         }
@@ -1488,8 +1493,7 @@ static int send_sub_rect(VncState *vs, int x, int y, int w, int h)
     } else if (colors == 2) {
         ret = send_mono_rect(vs, x, y, w, h, bg, fg);
     } else if (colors <= 256) {
-#ifdef CONFIG_VNC_JPEG
-        if (colors > 96 && vs->tight.quality != -1 && vs->tight.quality <= 3 &&
+        if (colors > 96 &&
             tight_detect_smooth_image(vs, w, h)) {
             int quality = tight_conf[vs->tight.quality].jpeg_quality;
 
@@ -1497,10 +1501,36 @@ static int send_sub_rect(VncState *vs, int x, int y, int w, int h)
         } else {
             ret = send_palette_rect(vs, x, y, w, h, palette);
         }
-#else
-        ret = send_palette_rect(vs, x, y, w, h, palette);
+    }
+    return ret;
+}
 #endif
+
+static int send_sub_rect(VncState *vs, int x, int y, int w, int h)
+{
+    VncPalette *palette = NULL;
+    uint32_t bg = 0, fg = 0;
+    int colors;
+    int ret = 0;
+
+    vnc_framebuffer_update(vs, x, y, w, h, vs->tight.type);
+
+    vnc_tight_start(vs);
+    vnc_raw_send_framebuffer_update(vs, x, y, w, h);
+    vnc_tight_stop(vs);
+
+    colors = tight_fill_palette(vs, x, y, w * h, &fg, &bg, &palette);
+
+#ifdef CONFIG_VNC_JPEG
+    if (vs->tight.quality != -1) {
+        ret = send_sub_rect_jpeg(vs, x, y, w, h, bg, fg, colors, palette);
+    } else {
+        ret = send_sub_rect_nojpeg(vs, x, y, w, h, bg, fg, colors, palette);
     }
+#else
+    ret = send_sub_rect_nojpeg(vs, x, y, w, h, bg, fg, colors, palette);
+#endif
+
     palette_destroy(palette);
     return ret;
 }