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[NEW] Now mini reads (GIFs and only GIFs)

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This commit is contained in:
Raimon Zamora
2022-10-05 16:50:24 +02:00
parent c361eef2ff
commit a9f7d46afd
2 changed files with 551 additions and 52 deletions
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69
mini.cpp
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@@ -2,6 +2,7 @@
#include <stdio.h>
#include <string.h>
#include "lua.h"
#include "gif.c"
#pragma pack(1)
@@ -160,55 +161,15 @@ uint8_t loadsurf(const char* filename) {
FILE *f = fopen(filename, "rb");
if (f) {
bmp_header_t header;
fread(&header, 54, 1, f);
if (header.num_colors == 0) header.num_colors = 1 << header.bpp;
header.image_size = (header.bmp_width*header.bmp_height) * (8/header.bpp);
fseek(f, header.num_colors*4, SEEK_CUR);
uint8_t buffer[header.image_size];
fread(buffer, header.image_size, 1, f);
fseek(f, 0, SEEK_END);
long size = ftell(f);
fseek(f, 0, SEEK_SET);
uint8_t *buffer = (uint8_t*)malloc(size);
fread(buffer, size, 1, f);
fclose(f);
surfaces[i].w = header.bmp_width;
surfaces[i].h = header.bmp_height;
surfaces[i].p = LoadGif(buffer, &surfaces[i].w, &surfaces[i].h);
surfaces[i].size = surfaces[i].w*surfaces[i].h;
surfaces[i].p = (uint8_t*)malloc(surfaces[i].size);
for (int y=0; y<surfaces[i].h; ++y) {
switch(header.bpp) {
case 1:
for (int x=0; x<(surfaces[i].w/8); ++x) {
CURRENT(x*8 , surfaces[i].h-1-y) = buffer[x+y*(surfaces[i].w/8)] >> 7;
CURRENT(x*8+1, surfaces[i].h-1-y) = ( buffer[x+y*(surfaces[i].w/8)] >> 6 ) & 0x1;
CURRENT(x*8+2, surfaces[i].h-1-y) = ( buffer[x+y*(surfaces[i].w/8)] >> 5 ) & 0x1;
CURRENT(x*8+3, surfaces[i].h-1-y) = ( buffer[x+y*(surfaces[i].w/8)] >> 4 ) & 0x1;
CURRENT(x*8+4, surfaces[i].h-1-y) = ( buffer[x+y*(surfaces[i].w/8)] >> 3 ) & 0x1;
CURRENT(x*8+5, surfaces[i].h-1-y) = ( buffer[x+y*(surfaces[i].w/8)] >> 2 ) & 0x1;
CURRENT(x*8+6, surfaces[i].h-1-y) = ( buffer[x+y*(surfaces[i].w/8)] >> 1 ) & 0x1;
CURRENT(x*8+7, surfaces[i].h-1-y) = buffer[x+y*(surfaces[i].w/8)] & 0x1;
}
break;
case 2:
for (int x=0; x<(surfaces[i].w/4); ++x) {
CURRENT(x*4 , surfaces[i].h-1-y) = buffer[x+y*(surfaces[i].w/4)] >> 6;
CURRENT(x*4+1, surfaces[i].h-1-y) = ( buffer[x+y*(surfaces[i].w/4)] >> 4 ) & 0x3;
CURRENT(x*4+2, surfaces[i].h-1-y) = ( buffer[x+y*(surfaces[i].w/4)] >> 2 ) & 0x3;
CURRENT(x*4+3, surfaces[i].h-1-y) = buffer[x+y*(surfaces[i].w/4)] & 0x3;
}
break;
case 4:
for (int x=0; x<(surfaces[i].w/2); ++x) {
CURRENT(x*2, surfaces[i].h-1-y) = buffer[x+y*(surfaces[i].w/2)] >> 4;
CURRENT(x*2+1, surfaces[i].h-1-y) = buffer[x+y*(surfaces[i].w/2)] & 0xf;
}
break;
case 8:
for (int x=0; x<(surfaces[i].w); ++x) {
CURRENT(x, surfaces[i].h-1-y) = buffer[x+y*(surfaces[i].w)];
}
break;
}
}
free(buffer);
}
return i;
}
@@ -334,12 +295,16 @@ void color(uint8_t color) {
void loadpal(const char* filename) {
FILE *f = fopen(filename, "rb");
if (f) {
bmp_header_t header;
fread(&header, 54, 1, f);
if (header.num_colors == 0) header.num_colors = 1 << header.bpp;
header.image_size = (header.bmp_width*header.bmp_height) * (8/header.bpp);
fread(palette, header.num_colors*4, 1, f);
fseek(f, 0, SEEK_END);
long size = ftell(f);
fseek(f, 0, SEEK_SET);
uint8_t *buffer = (uint8_t*)malloc(size);
fread(buffer, size, 1, f);
fclose(f);
uint32_t *pal = LoadPalette(buffer);
free(buffer);
memcpy(palette, pal, 1024);
free(pal);
}
}