git subrepo clone https://github.com/libretro/libretro-common.git deps/libretro-common

[pcsx_rearmed.git] / deps / libretro-common / samples / formats / png / rpng_test.c

diff --git a/deps/libretro-common/samples/formats/png/rpng_test.c b/deps/libretro-common/samples/formats/png/rpng_test.c
new file mode 100644 (file)
index 0000000..066a799
--- /dev/null
+++ b/deps/libretro-common/samples/formats/png/rpng_test.c
@@ -0,0 +1,207 @@
+/* Copyright  (C) 2010-2020 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (rpng_test.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#ifdef HAVE_IMLIB2
+#include <Imlib2.h>
+#endif
+
+#include <file/nbio.h>
+#include <formats/rpng.h>
+#include <formats/image.h>
+
+static bool rpng_load_image_argb(const char *path, uint32_t **data,
+      unsigned *width, unsigned *height)
+{
+   int retval;
+   size_t file_len;
+   bool              ret = true;
+   rpng_t          *rpng = NULL;
+   void             *ptr = NULL;
+   struct nbio_t* handle = (struct nbio_t*)nbio_open(path, NBIO_READ);
+
+   if (!handle)
+      goto end;
+
+   nbio_begin_read(handle);
+
+   while (!nbio_iterate(handle));
+
+   ptr = nbio_get_ptr(handle, &file_len);
+
+   if (!ptr)
+   {
+      ret = false;
+      goto end;
+   }
+
+   rpng = rpng_alloc();
+
+   if (!rpng)
+   {
+      ret = false;
+      goto end;
+   }
+
+   if (!rpng_set_buf_ptr(rpng, (uint8_t*)ptr, file_len))
+   {
+      ret = false;
+      goto end;
+   }
+
+   if (!rpng_start(rpng))
+   {
+      ret = false;
+      goto end;
+   }
+
+   while (rpng_iterate_image(rpng));
+
+   if (!rpng_is_valid(rpng))
+   {
+      ret = false;
+      goto end;
+   }
+
+   do
+   {
+      retval = rpng_process_image(rpng,
+            (void**)data, file_len, width, height);
+   }while(retval == IMAGE_PROCESS_NEXT);
+
+   if (retval == IMAGE_PROCESS_ERROR || retval == IMAGE_PROCESS_ERROR_END)
+      ret = false;
+
+end:
+   if (handle)
+      nbio_free(handle);
+   if (rpng)
+      rpng_free(rpng);
+   rpng = NULL;
+   if (!ret)
+      free(*data);
+   return ret;
+}
+
+static int test_rpng(const char *in_path)
+{
+#ifdef HAVE_IMLIB2
+   Imlib_Image img;
+   const uint32_t *imlib_data = NULL;
+#endif
+   const uint32_t test_data[] = {
+      0xff000000 | 0x50, 0xff000000 | 0x80,
+      0xff000000 | 0x40, 0xff000000 | 0x88,
+      0xff000000 | 0x50, 0xff000000 | 0x80,
+      0xff000000 | 0x40, 0xff000000 | 0x88,
+      0xff000000 | 0xc3, 0xff000000 | 0xd3,
+      0xff000000 | 0xc3, 0xff000000 | 0xd3,
+      0xff000000 | 0xc3, 0xff000000 | 0xd3,
+      0xff000000 | 0xc3, 0xff000000 | 0xd3,
+   };
+   uint32_t *data = NULL;
+   unsigned width = 0;
+   unsigned height = 0;
+
+   if (!rpng_save_image_argb("/tmp/test.png", test_data, 4, 4, 16))
+      return 1;
+
+   if (!rpng_load_image_argb(in_path, &data, &width, &height))
+      return 2;
+
+   fprintf(stderr, "Path: %s.\n", in_path);
+   fprintf(stderr, "Got image: %u x %u.\n", width, height);
+
+#if 0
+   fprintf(stderr, "\nRPNG:\n");
+   for (unsigned h = 0; h < height; h++)
+   {
+      unsigned w;
+      for (w = 0; w < width; w++)
+         fprintf(stderr, "[%08x] ", data[h * width + w]);
+      fprintf(stderr, "\n");
+   }
+#endif
+
+#ifdef HAVE_IMLIB2
+   /* Validate with imlib2 as well. */
+   img = imlib_load_image(in_path);
+   if (!img)
+      return 4;
+
+   imlib_context_set_image(img);
+
+   width      = imlib_image_get_width();
+   height     = imlib_image_get_width();
+   imlib_data = imlib_image_get_data_for_reading_only();
+
+#if 0
+   fprintf(stderr, "\nImlib:\n");
+   for (unsigned h = 0; h < height; h++)
+   {
+      for (unsigned w = 0; w < width; w++)
+         fprintf(stderr, "[%08x] ", imlib_data[h * width + w]);
+      fprintf(stderr, "\n");
+   }
+#endif
+
+   if (memcmp(imlib_data, data, width * height * sizeof(uint32_t)) != 0)
+   {
+      fprintf(stderr, "Imlib and RPNG differs!\n");
+      return 5;
+   }
+   else
+      fprintf(stderr, "Imlib and RPNG are equivalent!\n");
+
+   imlib_free_image();
+#endif
+   free(data);
+
+   return 0;
+}
+
+int main(int argc, char *argv[])
+{
+   const char *in_path = "/tmp/test.png";
+
+   if (argc > 2)
+   {
+      fprintf(stderr, "Usage: %s <png file>\n", argv[0]);
+      return 1;
+   }
+
+   if (argc == 2)
+      in_path = argv[1];
+
+   fprintf(stderr, "Doing tests...\n");
+
+   if (test_rpng(in_path) != 0)
+   {
+      fprintf(stderr, "Test failed.\n");
+      return -1;
+   }
+
+   return 0;
+}