add file

SVN revision: 34606

legacy/evas/src/lib/engines/common/evas_convert_colorspace.c

@@ -0,0 +1,69 @@
+#include "evas_common.h"
+
+#define CONVERT_RGB_565_TO_RGB_888(s) \
+	(((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7)) | \
+	 ((((s) << 5) & 0xfc00) | (((s) >> 1) & 0x300)) | \
+	 ((((s) << 8) & 0xf80000) | (((s) << 3) & 0x70000)))
+
+#define CONVERT_A5P_TO_A8(s) \
+	((((s) << 3) & 0xf8) | (((s) >> 2) & 0x7))
+
+static inline void *
+evas_common_convert_argb8888_to_rgb565_a5p(void *data, int w, int h, int stride, Evas_Bool has_alpha)
+{
+}
+
+static inline void *
+evas_common_convert_rgb565_a5p_to_argb8888(void *data, int w, int h, int stride, Evas_Bool has_alpha)
+{
+   DATA16 *src, *end;
+   DATA32 *ret, *dst;
+   int r, g, b;
+
+   src = data;
+   end = src + (stride * h);
+   ret = malloc(w * h * sizeof(DATA32));
+
+   dst = ret;
+   if (has_alpha)
+     {
+	DATA8 *alpha;
+
+	alpha = end;
+	for (; src < end; src++, alpha++, dst++)
+	  *dst = (CONVERT_A5P_TO_A8(*alpha) << 24) |
+		  CONVERT_RGB_565_TO_RGB_888(*src);
+     }
+   else
+     {
+	for (; src < end; src++, dst++)
+	  *dst = CONVERT_RGB_565_TO_RGB_888(*src);
+     }
+   return ret;
+}
+
+EAPI void *
+evas_common_convert_argb8888_to(void *data, int w, int h, int stride, Evas_Bool has_alpha, Evas_Colorspace cspace)
+{
+   switch (cspace)
+     {
+	case EVAS_COLORSPACE_RGB565_A5P:
+	  return evas_common_convert_argb8888_to_rgb565_a5p(data, w, h, stride, has_alpha);
+	default:
+	  break;
+     }
+   return NULL;
+}
+
+EAPI void *
+evas_common_convert_rgb565_a5p_to(void *data, int w, int h, int stride, Evas_Bool has_alpha, Evas_Colorspace cspace)
+{
+   switch (cspace)
+     {
+	case EVAS_COLORSPACE_ARGB8888:
+	  return evas_common_convert_rgb565_a5p_to_argb8888(data, w, h, stride, has_alpha);
+	default:
+	  break;
+     }
+   return NULL;
+}