ui/vnc.c: replace big endian flag with byte order value

It will make it easier to do certain comparisons in future if we
store G_BIG_ENDIAN/G_LITTLE_ENDIAN directly, instead of a boolean
flag, as we can then compare directly to the G_BYTE_ORDER constant.

Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

ui/vnc-enc-tight.c

@@ -150,7 +150,7 @@ tight_detect_smooth_image24(VncState *vs, int w, int h)
      * If client is big-endian, color samples begin from the second
      * byte (offset 1) of a 32-bit pixel value.
      */
-    off = vs->client_be;
+    off = vs->client_endian == G_BIG_ENDIAN ? 1 : 0;
 
     memset(stats, 0, sizeof (stats));
 

ui/vnc-enc-zrle.c

@@ -255,7 +255,7 @@ static void zrle_write_u8(VncState *vs, uint8_t value)
 static int zrle_send_framebuffer_update(VncState *vs, int x, int y,
                                         int w, int h)
 {
-    bool be = vs->client_be;
+    bool be = vs->client_endian == G_BIG_ENDIAN;
     size_t bytes;
     int zywrle_level;
 

ui/vnc-jobs.c

@@ -188,7 +188,7 @@ static void vnc_async_encoding_start(VncState *orig, VncState *local)
     local->lossy_rect = orig->lossy_rect;
     local->write_pixels = orig->write_pixels;
     local->client_pf = orig->client_pf;
-    local->client_be = orig->client_be;
+    local->client_endian = orig->client_endian;
     local->tight = orig->tight;
     local->zlib = orig->zlib;
     local->hextile = orig->hextile;

ui/vnc.c

@@ -891,7 +891,7 @@ void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
         buf[0] = v;
         break;
     case 2:
-        if (vs->client_be) {
+        if (vs->client_endian == G_BIG_ENDIAN) {
             buf[0] = v >> 8;
             buf[1] = v;
         } else {
@@ -901,7 +901,7 @@ void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
         break;
     default:
     case 4:
-        if (vs->client_be) {
+        if (vs->client_endian == G_BIG_ENDIAN) {
             buf[0] = v >> 24;
             buf[1] = v >> 16;
             buf[2] = v >> 8;
@@ -2312,7 +2312,7 @@ static void set_pixel_format(VncState *vs, int bits_per_pixel,
     vs->client_pf.bits_per_pixel = bits_per_pixel;
     vs->client_pf.bytes_per_pixel = bits_per_pixel / 8;
     vs->client_pf.depth = bits_per_pixel == 32 ? 24 : bits_per_pixel;
-    vs->client_be = big_endian_flag;
+    vs->client_endian = big_endian_flag ? G_BIG_ENDIAN : G_LITTLE_ENDIAN;
 
     if (!true_color_flag) {
         send_color_map(vs);

ui/vnc.h

@@ -323,7 +323,7 @@ struct VncState
     VncWritePixels *write_pixels;
     PixelFormat client_pf;
     pixman_format_code_t client_format;
-    bool client_be;
+    int client_endian; /* G_LITTLE_ENDIAN or G_BIG_ENDIAN */
 
     CaptureVoiceOut *audio_cap;
     struct audsettings as;