Add libva to chromium third_party.

third_party/libva/va/x11/va_dricommon.c

Index: third_party/libva/va/x11/va_dricommon.c
diff --git a/third_party/libva/va/x11/va_dricommon.c b/third_party/libva/va/x11/va_dricommon.c
new file mode 100644
index 0000000000000000000000000000000000000000..07dc50cd943118c98130e1936193709d51a723f3
--- /dev/null
+++ b/third_party/libva/va/x11/va_dricommon.c
@@ -0,0 +1,114 @@
+#include "va_dricommon.h"
+
+// X error trap
+static int x11_error_code = 0;
+static int (*old_error_handler)(Display *, XErrorEvent *);
+
+static int 
+error_handler(Display *dpy, XErrorEvent *error)
+{
+    x11_error_code = error->error_code;
+    return 0;
+}
+
+static void 
+x11_trap_errors(void)
+{
+    x11_error_code    = 0;
+    old_error_handler = XSetErrorHandler(error_handler);
+}
+
+static int 
+x11_untrap_errors(void)
+{
+    XSetErrorHandler(old_error_handler);
+    return x11_error_code;
+}
+
+static int 
+is_window(Display *dpy, Drawable drawable)
+{
+    XWindowAttributes wattr;
+
+    x11_trap_errors();
+    XGetWindowAttributes(dpy, drawable, &wattr);
+    return x11_untrap_errors() == 0;
+}
+
+static struct dri_drawable *
+do_drawable_hash(VADriverContextP ctx, XID drawable)
+{
+    struct dri_state *dri_state = (struct dri_state *)ctx->dri_state;
+    int index = drawable % DRAWABLE_HASH_SZ;
+    struct dri_drawable *dri_drawable = dri_state->drawable_hash[index];
+
+    while (dri_drawable) {
+        if (dri_drawable->x_drawable == drawable)
+            return dri_drawable;
+        dri_drawable = dri_drawable->next;
+    }
+
+    dri_drawable = dri_state->createDrawable(ctx, drawable);
+    dri_drawable->x_drawable = drawable;
+    dri_drawable->is_window = is_window(ctx->native_dpy, drawable);
+    dri_drawable->next = dri_state->drawable_hash[index];
+    dri_state->drawable_hash[index] = dri_drawable;
+
+    return dri_drawable;
+}
+
+void
+free_drawable(VADriverContextP ctx, struct dri_drawable* dri_drawable)
+{
+    struct dri_state *dri_state = (struct dri_state *)ctx->dri_state;
+    int i = 0;
+
+    while (i++ < DRAWABLE_HASH_SZ) {
+	if (dri_drawable == dri_state->drawable_hash[i]) {
+	    dri_state->destroyDrawable(ctx, dri_drawable);
+	    dri_state->drawable_hash[i] = NULL;
+	}
+    }
+}
+
+void
+free_drawable_hashtable(VADriverContextP ctx)
+{
+    struct dri_state *dri_state = (struct dri_state *)ctx->dri_state;
+    int i;
+    struct dri_drawable *dri_drawable, *prev;
+
+    for (i = 0; i < DRAWABLE_HASH_SZ; i++) {
+        dri_drawable = dri_state->drawable_hash[i];
+
+        while (dri_drawable) {
+            prev = dri_drawable;
+            dri_drawable = prev->next;
+            dri_state->destroyDrawable(ctx, prev);
+        }
+
+	dri_state->drawable_hash[i] = NULL;
+    }
+}
+
+struct dri_drawable *
+dri_get_drawable(VADriverContextP ctx, XID drawable)
+{
+    return do_drawable_hash(ctx, drawable);
+}
+
+void 
+dri_swap_buffer(VADriverContextP ctx, struct dri_drawable *dri_drawable)
+{
+    struct dri_state *dri_state = (struct dri_state *)ctx->dri_state;
+
+    dri_state->swapBuffer(ctx, dri_drawable);
+}
+
+union dri_buffer *
+dri_get_rendering_buffer(VADriverContextP ctx, struct dri_drawable *dri_drawable)
+{
+    struct dri_state *dri_state = (struct dri_state *)ctx->dri_state;
+    
+    return dri_state->getRenderingBuffer(ctx, dri_drawable);
+}