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Location: cpp/openttd-patchpack/source/os/macosx/splash.c
r5157:a56ae3d45452
3.3 KiB
text/x-c
(svn r7255) -Comments added for CBlobBaseSimple, CBlobT classes
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 | /* $Id$ */
#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) ("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 */
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