vnc: split encoding in specific files

This will allow to implement new encodings (tight, zrle, ..)
in a cleaner way. This may hurt performances, because some
functions like vnc_convert_pixel are not static anymore, but
should not be a problem with gcc 4.5 and the new -flto.

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

1 files changed, 115 insertions, 0 deletions

diff --git a/vnc-encoding-hextile.c b/vnc-encoding-hextile.c
new file mode 100644
index 0000000..a01c5e2
--- /dev/null
+++ b/vnc-encoding-hextile.c
@@ -0,0 +1,115 @@
+/*
+ * QEMU VNC display driver: hextile encoding
+ *
+ * Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>
+ * Copyright (C) 2006 Fabrice Bellard
+ * Copyright (C) 2009 Red Hat, Inc
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "vnc.h"
+
+static void hextile_enc_cord(uint8_t *ptr, int x, int y, int w, int h)
+{
+    ptr[0] = ((x & 0x0F) << 4) | (y & 0x0F);
+    ptr[1] = (((w - 1) & 0x0F) << 4) | ((h - 1) & 0x0F);
+}
+
+#define BPP 8
+#include "vnchextile.h"
+#undef BPP
+
+#define BPP 16
+#include "vnchextile.h"
+#undef BPP
+
+#define BPP 32
+#include "vnchextile.h"
+#undef BPP
+
+#define GENERIC
+#define BPP 8
+#include "vnchextile.h"
+#undef BPP
+#undef GENERIC
+
+#define GENERIC
+#define BPP 16
+#include "vnchextile.h"
+#undef BPP
+#undef GENERIC
+
+#define GENERIC
+#define BPP 32
+#include "vnchextile.h"
+#undef BPP
+#undef GENERIC
+
+void vnc_hextile_send_framebuffer_update(VncState *vs, int x,
+                                         int y, int w, int h)
+{
+    int i, j;
+    int has_fg, has_bg;
+    uint8_t *last_fg, *last_bg;
+    VncDisplay *vd = vs->vd;
+
+    last_fg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel);
+    last_bg = (uint8_t *) qemu_malloc(vd->server->pf.bytes_per_pixel);
+    has_fg = has_bg = 0;
+    for (j = y; j < (y + h); j += 16) {
+        for (i = x; i < (x + w); i += 16) {
+            vs->send_hextile_tile(vs, i, j,
+                                  MIN(16, x + w - i), MIN(16, y + h - j),
+                                  last_bg, last_fg, &has_bg, &has_fg);
+        }
+    }
+    free(last_fg);
+    free(last_bg);
+
+}
+
+void vnc_hextile_set_pixel_conversion(VncState *vs, int generic)
+{
+    if (!generic) {
+        switch (vs->ds->surface->pf.bits_per_pixel) {
+            case 8:
+                vs->send_hextile_tile = send_hextile_tile_8;
+                break;
+            case 16:
+                vs->send_hextile_tile = send_hextile_tile_16;
+                break;
+            case 32:
+                vs->send_hextile_tile = send_hextile_tile_32;
+                break;
+        }
+    } else {
+        switch (vs->ds->surface->pf.bits_per_pixel) {
+            case 8:
+                vs->send_hextile_tile = send_hextile_tile_generic_8;
+                break;
+            case 16:
+                vs->send_hextile_tile = send_hextile_tile_generic_16;
+                break;
+            case 32:
+                vs->send_hextile_tile = send_hextile_tile_generic_32;
+                break;
+        }
+    }
+}