Ported common directory from automated. It contains common

helpers functions for some test suites.

test/test-automation/common/common.c

+/**
+ * Automated SDL_Surface test.
+ *
+ * Written by Edgar Simo "bobbens"
+ *
+ * Released under Public Domain.
+ */
+
+
+#include "SDL.h"
+#include "../SDL_at.h"
+
+#include "common.h"
+
+
+/**
+ * @brief Compares a surface and a surface image for equality.
+ */
+int surface_compare( SDL_Surface *sur, const SurfaceImage_t *img, int allowable_error )
+{
+   int ret;
+   int i,j;
+   int bpp;
+   Uint8 *p, *pd;
+
+   /* Make sure size is the same. */
+   if ((sur->w != img->width) || (sur->h != img->height))
+      return -1;
+
+   SDL_LockSurface( sur );
+
+   ret = 0;
+   bpp = sur->format->BytesPerPixel;
+
+   /* Compare image - should be same format. */
+   for (j=0; j<sur->h; j++) {
+      for (i=0; i<sur->w; i++) {
+         p  = (Uint8 *)sur->pixels + j * sur->pitch + i * bpp;
+         pd = (Uint8 *)img->pixel_data + (j*img->width + i) * img->bytes_per_pixel;
+         switch (bpp) {
+            case 1:
+            case 2:
+            case 3:
+               ret += 1;
+               /*printf("%d BPP not supported yet.\n",bpp);*/
+               break;
+
+            case 4:
+               {
+                  int dist = 0;
+                  Uint8 R, G, B, A;
+
+                  SDL_GetRGBA(*(Uint32*)p, sur->format, &R, &G, &B, &A);
+
+                  if (img->bytes_per_pixel == 3) {
+                     dist += (R-pd[0])*(R-pd[0]);
+                     dist += (G-pd[1])*(G-pd[1]);
+                     dist += (B-pd[2])*(B-pd[2]);
+                  } else {
+                     dist += (R-pd[0])*(R-pd[0]);
+                     dist += (G-pd[1])*(G-pd[1]);
+                     dist += (B-pd[2])*(B-pd[2]);
+                     dist += (A-pd[3])*(A-pd[3]);
+                  }
+                  /* Allow some difference in blending accuracy */
+                  if (dist > allowable_error) {
+                     /*printf("pixel %d,%d varies by %d\n", i, j, dist);*/
+                     ++ret;
+                  }
+               }
+               break;
+         }
+      }
+   }
+
+   SDL_UnlockSurface( sur );
+
+   if (ret) {
+      SDL_SaveBMP(sur, "fail.bmp");
+
+      SDL_LockSurface( sur );
+
+      bpp = sur->format->BytesPerPixel;
+
+      if (bpp == 4) {
+         for (j=0; j<sur->h; j++) {
+            for (i=0; i<sur->w; i++) {
+               Uint8 R, G, B, A;
+               p  = (Uint8 *)sur->pixels + j * sur->pitch + i * bpp;
+               pd = (Uint8 *)img->pixel_data + (j*img->width + i) * img->bytes_per_pixel;
+
+               R = pd[0];
+               G = pd[1];
+               B = pd[2];
+               if (img->bytes_per_pixel == 4) {
+                  A = pd[3];
+               } else {
+                  A = 0;
+               }
+               *(Uint32*)p = (A << 24) | (R << 16) | (G << 8) | B;
+            }
+         }
+      }
+
+      SDL_UnlockSurface( sur );
+
+      SDL_SaveBMP(sur, "good.bmp");
+   }
+   return ret;
+}

test/test-automation/common/common.h

+/**
+ * Automated SDL test common framework.
+ *
+ * Written by Edgar Simo "bobbens"
+ *
+ * Released under Public Domain.
+ */
+
+
+#ifndef COMMON_H
+#  define COMMON_H
+
+
+#  define FORMAT  SDL_PIXELFORMAT_ARGB8888
+#  define AMASK   0xff000000 /**< Alpha bit mask. */
+#  define RMASK   0x00ff0000 /**< Red bit mask. */
+#  define GMASK   0x0000ff00 /**< Green bit mask. */
+#  define BMASK   0x000000ff /**< Blue bit mask. */
+
+
+typedef struct SurfaceImage_s {
+   int width;
+   int height;
+   unsigned int  bytes_per_pixel; /* 3:RGB, 4:RGBA */ 
+   const unsigned char pixel_data[];
+} SurfaceImage_t;
+
+#define ALLOWABLE_ERROR_OPAQUE	0
+#define ALLOWABLE_ERROR_BLENDED	64
+
+/**
+ * @brief Compares a surface and a surface image for equality.
+ *
+ *    @param sur Surface to compare.
+ *    @param img Image to compare against.
+ *    @return 0 if they are the same, -1 on error and positive if different.
+ */
+int surface_compare( SDL_Surface *sur, const SurfaceImage_t *img, int allowable_error );
+
+
+#endif /* COMMON_H */
+

test/test-automation/common/images.h

+
+
+#ifndef IMAGES_H
+#  define IMAGES_H
+
+
+#include "common.h"
+
+
+/*
+ * Pull in images for testcases.
+ */
+#include "img_primitives.c"
+#include "img_primitivesblend.c"
+#include "img_face.c"
+#include "img_blit.c"
+#include "img_blitblend.c"
+
+
+#endif /* IMAGES_H */
+
+