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author | KUDr <KUDr@openttd.org> | 2007-01-10 18:12:09 +0000 |
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committer | KUDr <KUDr@openttd.org> | 2007-01-10 18:12:09 +0000 |
commit | 07c30785ab226c4762b442f5a09ec745017cc94b (patch) | |
tree | d9abc3d9810159441bed9f82a52bd1ee52d770dd /src/os/macosx/splash.cpp | |
parent | dc44d341075a525d6069bfbf935efe75ac7ff0f0 (diff) | |
download | openttd-07c30785ab226c4762b442f5a09ec745017cc94b.tar.xz |
(svn r8033) [cpp] - Prepare for merge from branches/cpp (all .c files renamed to .cpp)
Diffstat (limited to 'src/os/macosx/splash.cpp')
-rw-r--r-- | src/os/macosx/splash.cpp | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/os/macosx/splash.cpp b/src/os/macosx/splash.cpp new file mode 100644 index 000000000..46a19b1a6 --- /dev/null +++ b/src/os/macosx/splash.cpp @@ -0,0 +1,144 @@ +/* $Id$ */ + +#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, "[libpng] error: %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, 1, "[libpng] warning: %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 */ |