1 files changed, 186 insertions, 0 deletions

diff --git a/libraries/evas/src/modules/engines/software_16_x11/evas_x_buffer.c b/libraries/evas/src/modules/engines/software_16_x11/evas_x_buffer.c
new file mode 100644
index 0000000..32784b0
--- /dev/null
+++ b/libraries/evas/src/modules/engines/software_16_x11/evas_x_buffer.c
@@ -0,0 +1,186 @@
+#include "evas_common.h"
+#include "evas_engine.h"
+
+static int _x_err = 0;
+
+int
+evas_software_16_x11_x_can_do_shm(Display *d)
+{
+   static Display *cached_d = NULL;
+   static int cached_result = 0;
+   
+   if (d == cached_d) return cached_result;
+   cached_d = d;
+   if (XShmQueryExtension(d))
+     {
+        X_Output_Buffer *xob;
+
+        xob = evas_software_16_x11_x_output_buffer_new
+          (d, DefaultVisual(d, DefaultScreen(d)),
+           DefaultDepth(d, DefaultScreen(d)), 16, 16, 2, NULL);
+        if (!xob)
+          {
+             cached_result = 0;
+             return 0;
+          }
+        evas_software_16_x11_x_output_buffer_free(xob, 1);
+        cached_result = 1;
+        return 1;
+     }
+   cached_result = 0;
+   return 0;
+}
+
+static void
+x_output_tmp_x_err(Display * d __UNUSED__, XErrorEvent * ev __UNUSED__)
+{
+   _x_err = 1;
+   return;
+}
+
+X_Output_Buffer *
+evas_software_16_x11_x_output_buffer_new(Display *d, Visual *v, int depth, int w, int h, int try_shm, void *data)
+{
+   X_Output_Buffer *xob;
+
+   xob = calloc(1, sizeof(X_Output_Buffer));
+   if (!xob) return NULL;
+
+   xob->display = d;
+   xob->xim = NULL;
+   xob->shm_info = NULL;
+
+   if (try_shm > 0)
+     {
+        xob->shm_info = malloc(sizeof(XShmSegmentInfo));
+        if (xob->shm_info)
+          {
+             xob->xim = XShmCreateImage(d, v, depth, ZPixmap, NULL,
+                                        xob->shm_info, w, h);
+             if (xob->xim)
+               {
+                  xob->shm_info->shmid = shmget(IPC_PRIVATE,
+                                                xob->xim->bytes_per_line *
+                                                xob->xim->height,
+                                                IPC_CREAT | 0777);
+                  if (xob->shm_info->shmid >= 0)
+                    {
+                       xob->shm_info->readOnly = False;
+                       xob->shm_info->shmaddr = xob->xim->data =
+                         shmat(xob->shm_info->shmid, 0, 0);
+                       if (xob->shm_info->shmaddr)
+                         {
+                            XErrorHandler ph;
+
+                            XSync(d, False);
+                            _x_err = 0;
+                            ph = XSetErrorHandler((XErrorHandler)
+                                                  x_output_tmp_x_err);
+                            XShmAttach(d, xob->shm_info);
+                            XSync(d, False);
+                            XSetErrorHandler((XErrorHandler)ph);
+                            if (!_x_err)
+                              {
+                                 xob->im = (Soft16_Image *) evas_cache_image_data(evas_common_soft16_image_cache_get(), w, h, (DATA32 *) xob->xim->data, 0, EVAS_COLORSPACE_RGB565_A5P);
+                                 if (xob->im)
+                                   xob->im->stride = xob->xim->bytes_per_line / sizeof(DATA16);
+                                 return xob;
+                              }
+                         }
+                       shmdt(xob->shm_info->shmaddr);
+                       shmctl(xob->shm_info->shmid, IPC_RMID, 0);
+                    }
+                  if (xob->xim) XDestroyImage(xob->xim);
+                  xob->xim = NULL;
+               }
+             if (xob->shm_info) free(xob->shm_info);
+             xob->shm_info = NULL;
+          }
+     }
+
+   if (try_shm > 1) return NULL;
+
+   xob->xim = XCreateImage(d, v, depth, ZPixmap, 0, data, w, h, 32, 0);
+   if (!xob->xim)
+     {
+        free(xob);
+        return NULL;
+     }
+
+   xob->data = data;
+
+   if (!xob->xim->data)
+     {
+        xob->xim->data = malloc(xob->xim->bytes_per_line * xob->xim->height);
+        if (!xob->xim->data)
+          {
+             XDestroyImage(xob->xim);
+             free(xob);
+             return NULL;
+          }
+     }
+   if (xob->im)
+     evas_cache_image_drop(&xob->im->cache_entry);
+
+   xob->im =  (Soft16_Image *) evas_cache_image_data(evas_common_soft16_image_cache_get(), w, h, (DATA32 *) xob->xim->data, 0, EVAS_COLORSPACE_RGB565_A5P);
+   if (xob->im)
+     xob->im->stride = xob->xim->bytes_per_line / sizeof(DATA16);
+   return xob;
+}
+
+void
+evas_software_16_x11_x_output_buffer_free(X_Output_Buffer *xob, int sync)
+{
+   if (xob->shm_info)
+     {
+        if (sync) XSync(xob->display, False);
+        XShmDetach(xob->display, xob->shm_info);
+        XDestroyImage(xob->xim);
+        shmdt(xob->shm_info->shmaddr);
+        shmctl(xob->shm_info->shmid, IPC_RMID, 0);
+        free(xob->shm_info);
+     }
+   else
+     {
+        if (xob->data) xob->xim->data = NULL;
+        XDestroyImage(xob->xim);
+     }
+   free(xob);
+}
+
+void
+evas_software_16_x11_x_output_buffer_paste(X_Output_Buffer *xob, Drawable d, GC gc, int x, int y, int w, int h, int sync)
+{
+   if (xob->shm_info)
+     {
+        XShmPutImage(xob->display, d, gc, xob->xim, 0, 0, x, y, w, h, False);
+        if (sync) XSync(xob->display, False);
+     }
+   else
+     XPutImage(xob->display, d, gc, xob->xim, 0, 0, x, y, w, h);
+}
+
+DATA8 *
+evas_software_16_x11_x_output_buffer_data(X_Output_Buffer *xob, int *bytes_per_line_ret)
+{
+   if (bytes_per_line_ret) *bytes_per_line_ret = xob->xim->bytes_per_line;
+   return (DATA8*) xob->xim->data;
+}
+
+int
+evas_software_16_x11_x_output_buffer_depth(X_Output_Buffer *xob)
+{
+   return xob->xim->bits_per_pixel;
+}
+
+int
+evas_software_16_x11_x_output_buffer_byte_order(X_Output_Buffer *xob)
+{
+   return xob->xim->byte_order;
+}
+
+int
+evas_software_16_x11_x_output_buffer_bit_order(X_Output_Buffer *xob)
+{
+   return xob->xim->bitmap_bit_order;
+}