tests/exynos: add test for g2d_move

To check if g2d_move() works properly we create a small checkerboard
pattern in the center of the screen and then shift this pattern
around with g2d_move(). The pattern should be properly preserved
by the operation (but not the surrounding area).

Tested-by: Hyungwon Hwang <human.hwang@samsung.com>
Reviewed-by: Hyungwon Hwang <human.hwang@samsung.com>
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
[Emil Velikov: add g2d_move to the symbol check]
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

exynos/exynos-symbol-check

@@ -30,6 +30,7 @@ g2d_exec
 g2d_config_event
 g2d_fini
 g2d_init
+g2d_move
 g2d_scale_and_blend
 g2d_solid_fill
 EOF

tests/exynos/exynos_fimg2d_test.c

@@ -313,6 +313,130 @@ fail:
 	return ret;
 }
 
+static int g2d_move_test(struct exynos_device *dev,
+				struct exynos_bo *tmp,
+				struct exynos_bo *buf,
+				enum e_g2d_buf_type type)
+{
+	struct g2d_context *ctx;
+	struct g2d_image img = {0}, tmp_img = {0};
+	unsigned int img_w, img_h, count;
+	int cur_x, cur_y;
+	void *checkerboard;
+	int ret;
+
+	static const struct g2d_step {
+		int x, y;
+	} steps[] = {
+		{ 1,  0}, { 0,  1},
+		{-1,  0}, { 0, -1},
+		{ 1,  1}, {-1, -1},
+		{ 1, -1}, {-1,  1},
+		{ 2,  1}, { 1,  2},
+		{-2, -1}, {-1, -2},
+		{ 2, -1}, { 1, -2},
+		{-2,  1}, {-1,  2}
+	};
+	static const unsigned int num_steps =
+		sizeof(steps) / sizeof(struct g2d_step);
+
+	ctx = g2d_init(dev->fd);
+	if (!ctx)
+		return -EFAULT;
+
+	img.bo[0] = buf->handle;
+
+	/* create pattern of half the screen size */
+	checkerboard = create_checkerboard_pattern(screen_width / 64, screen_height / 64, 32);
+	if (!checkerboard) {
+		ret = -EFAULT;
+		goto fail;
+	}
+
+	img_w = (screen_width / 64) * 32;
+	img_h = (screen_height / 64) * 32;
+
+	switch (type) {
+	case G2D_IMGBUF_GEM:
+		memcpy(tmp->vaddr, checkerboard, img_w * img_h * 4);
+		tmp_img.bo[0] = tmp->handle;
+		break;
+	case G2D_IMGBUF_USERPTR:
+		tmp_img.user_ptr[0].userptr = (unsigned long)checkerboard;
+		tmp_img.user_ptr[0].size = img_w * img_h * 4;
+		break;
+	case G2D_IMGBUF_COLOR:
+	default:
+		ret = -EFAULT;
+		goto fail;
+	}
+
+	/* solid fill framebuffer with white color */
+	img.width = screen_width;
+	img.height = screen_height;
+	img.stride = screen_width * 4;
+	img.buf_type = G2D_IMGBUF_GEM;
+	img.color_mode = G2D_COLOR_FMT_ARGB8888 | G2D_ORDER_AXRGB;
+	img.color = 0xffffffff;
+
+	/* put checkerboard pattern in the center of the framebuffer */
+	cur_x = (screen_width - img_w) / 2;
+	cur_y = (screen_height - img_h) / 2;
+	tmp_img.width = img_w;
+	tmp_img.height = img_h;
+	tmp_img.stride = img_w * 4;
+	tmp_img.buf_type = type;
+	tmp_img.color_mode = G2D_COLOR_FMT_ARGB8888 | G2D_ORDER_AXRGB;
+
+	ret = g2d_solid_fill(ctx, &img, 0, 0, screen_width, screen_height) ||
+		g2d_copy(ctx, &tmp_img, &img, 0, 0, cur_x, cur_y, img_w, img_h);
+
+	if (!ret)
+		ret = g2d_exec(ctx);
+	if (ret < 0)
+			goto fail;
+
+	printf("move test with %s.\n",
+			type == G2D_IMGBUF_GEM ? "gem" : "userptr");
+
+	srand(time(NULL));
+	for (count = 0; count < 256; ++count) {
+		const struct g2d_step *s;
+
+		/* select step and validate it */
+		while (1) {
+			s = &steps[random() % num_steps];
+
+			if (cur_x + s->x < 0 || cur_y + s->y < 0 ||
+				cur_x + img_w + s->x >= screen_width ||
+				cur_y + img_h + s->y >= screen_height)
+				continue;
+			else
+				break;
+		}
+
+		ret = g2d_move(ctx, &img, cur_x, cur_y, cur_x + s->x, cur_y + s->y,
+			img_w, img_h);
+		if (!ret)
+			ret = g2d_exec(ctx);
+
+		if (ret < 0)
+			goto fail;
+
+		cur_x += s->x;
+		cur_y += s->y;
+
+		usleep(100000);
+	}
+
+fail:
+	g2d_fini(ctx);
+
+	free(checkerboard);
+
+	return ret;
+}
+
 static int g2d_copy_with_scale_test(struct exynos_device *dev,
 					struct exynos_bo *src,
 					struct exynos_bo *dst,
@@ -708,6 +832,14 @@ int main(int argc, char **argv)
 
 	wait_for_user_input(0);
 
+	ret = g2d_move_test(dev, src, bo, G2D_IMGBUF_GEM);
+	if (ret < 0) {
+		fprintf(stderr, "failed to test move operation.\n");
+		goto err_free_src;
+	}
+
+	wait_for_user_input(0);
+
 	ret = g2d_copy_with_scale_test(dev, src, bo, G2D_IMGBUF_GEM);
 	if (ret < 0) {
 		fprintf(stderr, "failed to test copy and scale operation.\n");