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-rw-r--r--os/macosx/splash.c145
1 files changed, 145 insertions, 0 deletions
diff --git a/os/macosx/splash.c b/os/macosx/splash.c
new file mode 100644
index 000000000..99791cc21
--- /dev/null
+++ b/os/macosx/splash.c
@@ -0,0 +1,145 @@
+
+#include "../../stdafx.h"
+#include "../../openttd.h"
+#include "../../variables.h"
+#include "../../macros.h"
+#include "../../debug.h"
+#include "../../functions.h"
+#include "../../gfx.h"
+#include "../../fileio.h"
+
+#include "splash.h"
+
+#ifdef WITH_PNG
+
+#include <png.h>
+
+static void PNGAPI png_my_error(png_structp png_ptr, png_const_charp message)
+{
+ DEBUG(misc, 0) ("ERROR(libpng): %s - %s", message, (char *)png_get_error_ptr(png_ptr));
+ longjmp(png_ptr->jmpbuf, 1);
+}
+
+static void PNGAPI png_my_warning(png_structp png_ptr, png_const_charp message)
+{
+ DEBUG(misc, 0) ("WARNING(libpng): %s - %s", message, (char *)png_get_error_ptr(png_ptr));
+}
+
+void DisplaySplashImage(void)
+{
+ png_byte header[8];
+ FILE *f;
+ png_structp png_ptr;
+ png_infop info_ptr, end_info;
+ uint width, height, bit_depth, color_type;
+ png_colorp palette;
+ int num_palette;
+ png_bytep *row_pointers;
+ uint8 *src, *dst;
+ uint y;
+ uint xoff, yoff;
+ int i;
+
+ f = FioFOpenFile(SPLASH_IMAGE_FILE);
+ if (f == NULL) return;
+
+ fread(header, 1, 8, f);
+ if (png_sig_cmp(header, 0, 8) != 0) {
+ fclose(f);
+ return;
+ }
+
+ png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, (png_voidp) NULL, png_my_error, png_my_warning);
+
+ if (png_ptr == NULL) {
+ fclose(f);
+ return;
+ }
+
+ info_ptr = png_create_info_struct(png_ptr);
+ if (info_ptr == NULL) {
+ png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
+ fclose(f);
+ return;
+ }
+
+ end_info = png_create_info_struct(png_ptr);
+ if (end_info == NULL) {
+ png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
+ fclose(f);
+ return;
+ }
+
+ if (setjmp(png_jmpbuf(png_ptr))) {
+ png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
+ fclose(f);
+ return;
+ }
+
+ png_init_io(png_ptr, f);
+ png_set_sig_bytes(png_ptr, 8);
+
+ png_read_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, NULL);
+
+ width = png_get_image_width(png_ptr, info_ptr);
+ height = png_get_image_height(png_ptr, info_ptr);
+ bit_depth = png_get_bit_depth(png_ptr, info_ptr);
+ color_type = png_get_color_type(png_ptr, info_ptr);
+
+ if(color_type != PNG_COLOR_TYPE_PALETTE || bit_depth != 8) {
+ png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
+ fclose(f);
+ return;
+ }
+
+ if(!png_get_valid(png_ptr, info_ptr, PNG_INFO_PLTE)) {
+ png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
+ fclose(f);
+ return;
+ }
+
+ png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette);
+
+ row_pointers = png_get_rows(png_ptr, info_ptr);
+
+ memset(_screen.dst_ptr, 0xff, _screen.pitch * _screen.height);
+
+ if(width > (uint) _screen.width)
+ width = _screen.width;
+ if(height > (uint) _screen.height)
+ height = _screen.height;
+
+ xoff = (_screen.width - width) / 2;
+ yoff = (_screen.height - height) / 2;
+ for(y = 0; y < height; y++) {
+ src = row_pointers[y];
+ dst = ((uint8 *) _screen.dst_ptr) + (yoff + y) * _screen.pitch + xoff;
+
+ memcpy(dst, src, width);
+ }
+
+ for (i = 0; i < num_palette; i++) {
+ _cur_palette[i].r = palette[i].red;
+ _cur_palette[i].g = palette[i].green;
+ _cur_palette[i].b = palette[i].blue;
+ }
+
+ _cur_palette[0xff].r = 0;
+ _cur_palette[0xff].g = 0;
+ _cur_palette[0xff].b = 0;
+
+ _pal_first_dirty = 0;
+ _pal_last_dirty = 0xff;
+
+ png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
+ fclose(f);
+ return;
+}
+
+
+
+#else // WITH_PNG
+
+void DisplaySplashImage(void) {}
+
+#endif // WITH_PNG