Re-add PNG test.

1 files changed, 155 insertions, 0 deletions

diff --git a/tests/libdimension/png.c b/tests/libdimension/png.c
new file mode 100644
index 0000000..488cd56
--- /dev/null
+++ b/tests/libdimension/png.c
@@ -0,0 +1,155 @@
+/*************************************************************************
+ * Copyright (C) 2009 Tavian Barnes <tavianator@gmail.com>               *
+ *                                                                       *
+ * This file is part of The Dimension Test Suite.                        *
+ *                                                                       *
+ * The Dimension Test Suite is free software; you can redistribute it    *
+ * and/or modify it under the terms of the GNU General Public License as *
+ * published by the Free Software Foundation; either version 3 of the    *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension Test Suite 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  *
+ * General Public License for more details.                              *
+ *                                                                       *
+ * You should have received a copy of the GNU General Public License     *
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
+ *************************************************************************/
+
+#include "tests.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+int
+main() {
+  dmnsn_progress *progress;
+  FILE *ifile, *ofile;
+  dmnsn_scene *scene;
+  dmnsn_canvas *canvas;
+
+  /* Set the resilience low for tests */
+  dmnsn_set_resilience(DMNSN_SEVERITY_LOW);
+
+  /* Render the scene */
+  {
+    /* Allocate our default scene */
+    scene = dmnsn_new_default_scene();
+    if (!scene) {
+      fprintf(stderr, "--- Allocation of default scene failed! ---\n");
+      return EXIT_FAILURE;
+    }
+
+    /* Optimize the canvas for PNG export */
+    if (dmnsn_png_optimize_canvas(scene->canvas) != 0) {
+      dmnsn_delete_default_scene(scene);
+      fprintf(stderr, "--- Couldn't optimize canvas for PNG! ---\n");
+      return EXIT_FAILURE;
+    }
+
+    /* Render scene */
+
+    progress = dmnsn_raytrace_scene_async(scene);
+    if (!progress) {
+      dmnsn_delete_default_scene(scene);
+      fprintf(stderr, "--- Couldn't start raytracing worker thread! ---\n");
+      return EXIT_FAILURE;
+    }
+
+    dmnsn_progressbar("Raytracing scene: ", progress);
+
+    if (dmnsn_finish_progress(progress) != 0) {
+      dmnsn_delete_default_scene(scene);
+      fprintf(stderr, "--- Raytracing failed! ---\n");
+      return EXIT_FAILURE;
+    }
+
+    /* Write the image to PNG */
+
+    ofile = fopen("png1.png", "wb");
+    if (!ofile) {
+      dmnsn_delete_default_scene(scene);
+      fprintf(stderr, "--- Couldn't open 'png1.png' for writing! ---\n");
+      return EXIT_FAILURE;
+    }
+
+    progress = dmnsn_png_write_canvas_async(scene->canvas, ofile);
+    if (!progress) {
+      fclose(ofile);
+      dmnsn_delete_default_scene(scene);
+      fprintf(stderr, "--- Couldn't start PNG writing worker thread! ---\n");
+      return EXIT_FAILURE;
+    }
+
+    dmnsn_progressbar("Writing PNG file: ", progress);
+
+    if (dmnsn_finish_progress(progress) != 0) {
+      fclose(ofile);
+      dmnsn_delete_default_scene(scene);
+      fprintf(stderr, "--- Writing canvas to PNG failed! ---\n");
+      return EXIT_FAILURE;
+    }
+
+    fclose(ofile);
+    dmnsn_delete_default_scene(scene);
+  }
+
+  /* Now test PNG import/export */
+  {
+    /* Read the image back from PNG */
+
+    ifile = fopen("png1.png", "rb");
+    if (!ifile) {
+      fprintf(stderr, "--- Couldn't open 'png1.png' for reading! ---\n");
+      return EXIT_FAILURE;
+    }
+
+    progress = dmnsn_png_read_canvas_async(&canvas, ifile);
+    if (!progress) {
+      fclose(ifile);
+      fprintf(stderr, "--- Couldn't start PNG reading worker thread! ---\n");
+      return EXIT_FAILURE;
+    }
+
+    dmnsn_progressbar("Reading PNG file: ", progress);
+
+    if (dmnsn_finish_progress(progress) != 0) {
+      fclose(ifile);
+      fprintf(stderr, "--- Reading canvas from PNG failed! ---\n");
+      return EXIT_FAILURE;
+    }
+
+    fclose(ifile);
+
+    /* And write it back */
+
+    ofile = fopen("png2.png", "wb");
+    if (!ofile) {
+      fprintf(stderr, "--- Couldn't open 'png2.png' for writing! ---\n");
+      dmnsn_delete_canvas(canvas);
+      return EXIT_FAILURE;
+    }
+
+    progress = dmnsn_png_write_canvas_async(canvas, ofile);
+    if (!progress) {
+      fclose(ofile);
+      dmnsn_delete_canvas(canvas);
+      fprintf(stderr, "--- Couldn't start PNG writing worker thread! ---\n");
+      return EXIT_FAILURE;
+    }
+
+    dmnsn_progressbar("Writing PNG file: ", progress);
+
+    if (dmnsn_finish_progress(progress) != 0) {
+      fclose(ofile);
+      dmnsn_delete_canvas(canvas);
+      fprintf(stderr, "--- Writing canvas to PNG failed! ---\n");
+      return EXIT_FAILURE;
+    }
+
+    fclose(ofile);
+    dmnsn_delete_canvas(canvas);
+  }
+
+  return EXIT_SUCCESS;
+}