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  1. /*
  2.  * Copyright (c) 2012 Intel Corporation. All Rights Reserved.
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person obtaining a
  5.  * copy of this software and associated documentation files (the
  6.  * "Software"), to deal in the Software without restriction, including
  7.  * without limitation the rights to use, copy, modify, merge, publish,
  8.  * distribute, sub license, and/or sell copies of the Software, and to
  9.  * permit persons to whom the Software is furnished to do so, subject to
  10.  * the following conditions:
  11.  *
  12.  * The above copyright notice and this permission notice (including the
  13.  * next paragraph) shall be included in all copies or substantial portions
  14.  * of the Software.
  15.  *
  16.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  19.  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  20.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  21.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  22.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23.  */
  24. #include "va_dricommon.h"
  25.  
  26. // X error trap
  27. static int x11_error_code = 0;
  28. static int (*old_error_handler)(Display *, XErrorEvent *);
  29.  
  30. static int
  31. error_handler(Display *dpy, XErrorEvent *error)
  32. {
  33.     x11_error_code = error->error_code;
  34.     return 0;
  35. }
  36.  
  37. static void
  38. x11_trap_errors(void)
  39. {
  40.     x11_error_code    = 0;
  41.     old_error_handler = XSetErrorHandler(error_handler);
  42. }
  43.  
  44. static int
  45. x11_untrap_errors(void)
  46. {
  47.     XSetErrorHandler(old_error_handler);
  48.     return x11_error_code;
  49. }
  50.  
  51. static int
  52. is_window(Display *dpy, Drawable drawable)
  53. {
  54.     XWindowAttributes wattr;
  55.  
  56.     x11_trap_errors();
  57.     XGetWindowAttributes(dpy, drawable, &wattr);
  58.     return x11_untrap_errors() == 0;
  59. }
  60.  
  61. static struct dri_drawable *
  62. do_drawable_hash(VADriverContextP ctx, XID drawable)
  63. {
  64.     struct dri_state *dri_state = (struct dri_state *)ctx->drm_state;
  65.     int index = drawable % DRAWABLE_HASH_SZ;
  66.     struct dri_drawable *dri_drawable = dri_state->drawable_hash[index];
  67.  
  68.     while (dri_drawable) {
  69.         if (dri_drawable->x_drawable == drawable)
  70.             return dri_drawable;
  71.         dri_drawable = dri_drawable->next;
  72.     }
  73.  
  74.     dri_drawable = dri_state->createDrawable(ctx, drawable);
  75.     dri_drawable->x_drawable = drawable;
  76.     dri_drawable->is_window = is_window(ctx->native_dpy, drawable);
  77.     dri_drawable->next = dri_state->drawable_hash[index];
  78.     dri_state->drawable_hash[index] = dri_drawable;
  79.  
  80.     return dri_drawable;
  81. }
  82.  
  83. void
  84. free_drawable(VADriverContextP ctx, struct dri_drawable* dri_drawable)
  85. {
  86.     struct dri_state *dri_state = (struct dri_state *)ctx->drm_state;
  87.     int i = 0;
  88.  
  89.     while (i++ < DRAWABLE_HASH_SZ) {
  90.         if (dri_drawable == dri_state->drawable_hash[i]) {
  91.             dri_state->destroyDrawable(ctx, dri_drawable);
  92.             dri_state->drawable_hash[i] = NULL;
  93.         }
  94.     }
  95. }
  96.  
  97. void
  98. free_drawable_hashtable(VADriverContextP ctx)
  99. {
  100.     struct dri_state *dri_state = (struct dri_state *)ctx->drm_state;
  101.     int i;
  102.     struct dri_drawable *dri_drawable, *prev;
  103.  
  104.     for (i = 0; i < DRAWABLE_HASH_SZ; i++) {
  105.         dri_drawable = dri_state->drawable_hash[i];
  106.  
  107.         while (dri_drawable) {
  108.             prev = dri_drawable;
  109.             dri_drawable = prev->next;
  110.             dri_state->destroyDrawable(ctx, prev);
  111.         }
  112.  
  113.         dri_state->drawable_hash[i] = NULL;
  114.     }
  115. }
  116.  
  117. struct dri_drawable *
  118. dri_get_drawable(VADriverContextP ctx, XID drawable)
  119. {
  120.     return do_drawable_hash(ctx, drawable);
  121. }
  122.  
  123. void
  124. dri_swap_buffer(VADriverContextP ctx, struct dri_drawable *dri_drawable)
  125. {
  126.     struct dri_state *dri_state = (struct dri_state *)ctx->drm_state;
  127.  
  128.     dri_state->swapBuffer(ctx, dri_drawable);
  129. }
  130.  
  131. union dri_buffer *
  132. dri_get_rendering_buffer(VADriverContextP ctx, struct dri_drawable *dri_drawable)
  133. {
  134.     struct dri_state *dri_state = (struct dri_state *)ctx->drm_state;
  135.    
  136.     return dri_state->getRenderingBuffer(ctx, dri_drawable);
  137. }
  138.