Initial community commit

Src/h264dec/lcommon/src/memcache.c

@@ -0,0 +1,106 @@
+#include "memcache.h"
+#include "mbuffer.h"
+#include "memalloc.h"
+
+void image_cache_flush(ImageCache *cache)
+{
+	while (cache->head)
+	{
+		VideoImage *next = cache->head->next;
+		free_memImage(cache->head);
+		cache->head = next;
+	}
+	cache->size_x = 0;
+	cache->size_y = 0;
+}
+
+void image_cache_set_dimensions(ImageCache *cache, int width, int height)
+{
+	if (width != cache->size_x || height != cache->size_y)
+	{
+		image_cache_flush(cache);
+		cache->size_x = width;
+		cache->size_y = height;
+	}
+}
+
+int image_cache_dimensions_match(ImageCache *cache, int width, int height)
+{
+	if (width != cache->size_x || height != cache->size_y)
+		return 0;
+
+	return 1;
+}
+
+void image_cache_add(ImageCache *cache, VideoImage *image)
+{
+	image->next = cache->head;
+	cache->head = image;
+}
+
+struct video_image *image_cache_get(ImageCache *cache)
+{
+	if (cache->head)
+	{
+		VideoImage *ret = cache->head;
+		cache->head = ret->next;
+		ret->next = 0;
+		return ret;
+	}
+	return 0;
+}
+
+/* ------------- 
+
+PicMotion arrays are allowed with one extra slot in the first dimension
+which we use as the next pointer
+------------- */
+
+
+void motion_cache_flush(MotionCache *cache)
+{
+	while (cache->head)
+	{
+		PicMotion **next = (PicMotion **)cache->head[cache->size_y];
+		free_mem2DPicMotion(cache->head);
+		cache->head = next;
+	}
+	cache->size_x = 0;
+	cache->size_y = 0;
+}
+
+void motion_cache_set_dimensions(MotionCache *cache, int width, int height)
+{
+	if (width != cache->size_x || height != cache->size_y)
+	{
+		motion_cache_flush(cache);
+		cache->size_x = width;
+		cache->size_y = height;
+	}
+}
+
+int motion_cache_dimensions_match(MotionCache *cache, int width, int height)
+{
+	if (width != cache->size_x || height != cache->size_y)
+		return 0;
+
+	return 1;
+}
+
+void motion_cache_add(MotionCache *cache, PicMotion **image)
+{
+	image[cache->size_y] = (PicMotion *)cache->head;
+	cache->head = image;
+}
+
+struct pic_motion **motion_cache_get(MotionCache *cache)
+{
+	if (cache->head)
+	{
+		PicMotion **ret = cache->head;
+		cache->head = (PicMotion **)ret[cache->size_y];
+		ret[cache->size_y] = 0;
+		return ret;
+	}
+	return 0;
+}