gst Factor out endian-order RGB formats

[platform/upstream/gst-plugins-good.git] / gst / goom / goom_tools.h

diff --git a/gst/goom/goom_tools.h b/gst/goom/goom_tools.h
index 5159cf9..34f5240 100644 (file)
--- a/gst/goom/goom_tools.h
+++ b/gst/goom/goom_tools.h
@@ -1,29 +1,53 @@
+/* Goom Project
+ * Copyright (C) <2003> iOS-Software
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
 #ifndef _GOOMTOOLS_H
 #define _GOOMTOOLS_H
 
-#define NB_RAND 0x10000
+#include "goom_config.h"
 
-/* in graphic.c */
-extern int *rand_tab;
-extern unsigned short rand_pos;
+/**
+ * Random number generator wrapper for faster random number.
+ */
 
-#define RAND_INIT(i) \
-       srand (i) ;\
-       if (!rand_tab)\
-               rand_tab = (int *) malloc (NB_RAND * sizeof(int)) ;\
-       rand_pos = 1 ;\
-       while (rand_pos != 0)\
-               rand_tab [rand_pos++] = rand () ;
+#define GOOM_NB_RAND 0x10000
 
-#define RAND()\
-       (rand_tab[rand_pos = rand_pos + 1])
+typedef struct _GOOM_RANDOM {
+       int array[GOOM_NB_RAND];
+       unsigned short pos;
+} GoomRandom;
 
-#define RAND_CLOSE()\
-       free (rand_tab);\
-       rand_tab = 0;
+GoomRandom *goom_random_init(int i);
+void goom_random_free(GoomRandom *grandom);
 
+inline static int goom_random(GoomRandom *grandom) {
+       
+       grandom->pos++; /* works because pos is an unsigned short */
+       return grandom->array[grandom->pos];
+}
 
-/*#define iRAND(i) ((guint32)((float)i * RAND()/RAND_MAX)) */
-#define iRAND(i) (RAND()%i)
+inline static int goom_irand(GoomRandom *grandom, int i) {
+
+       grandom->pos++;
+       return grandom->array[grandom->pos] % i;
+}
+
+/* called to change the specified number of value in the array, so that the array does not remain the same*/
+void goom_random_update_array(GoomRandom *grandom, int numberOfValuesToChange);
 
 #endif