186 lines
5.1 KiB
C
186 lines
5.1 KiB
C
/**
|
|
* main.c
|
|
* Точка входа окончания загрузки
|
|
*
|
|
* Функции эффектов после полной инициализации ядра
|
|
*
|
|
*/
|
|
|
|
#include <fb.h>
|
|
#include <mem.h>
|
|
#include <tool.h>
|
|
|
|
#define TGA_ERR( ) LOG("Ошибка декодирования TGA на строчке: %u\n", __LINE__);
|
|
|
|
extern void *bootpng_ptr;
|
|
extern uint64_t bootpng_size;
|
|
|
|
typedef struct {
|
|
unsigned char magic1; // должно быть нулевым
|
|
unsigned char colormap; // должно быть нулевым
|
|
unsigned char encoding; // должно быть 2
|
|
unsigned short cmaporig, cmaplen; // должны быть нулевыми
|
|
unsigned char cmapent; // должно быть нулевым
|
|
unsigned short x; // должно быть нулевым
|
|
unsigned short y; // высота изображения
|
|
unsigned short h; // высота изображения
|
|
unsigned short w; // ширина изображения
|
|
unsigned char bpp; // должно быть 32
|
|
unsigned char pixeltype; // должно быть 40
|
|
} __attribute__((packed)) tga_header_t;
|
|
|
|
unsigned int *tga_parse(unsigned char *ptr, int size) {
|
|
unsigned int *data;
|
|
int i, j, k, x, y, w = (ptr[13] << 8) + ptr[12],
|
|
h = (ptr[15] << 8) + ptr[14],
|
|
o = (ptr[11] << 8) + ptr[10];
|
|
int m = ((ptr[1] ? (ptr[7] >> 3) * ptr[5] : 0) + 18);
|
|
|
|
if (w < 1 || h < 1) return NULL;
|
|
|
|
data = (unsigned int *)mem_alloc((w * h + 2) * sizeof(unsigned int));
|
|
if (!data) {
|
|
LOG("Ошибка декодирования TGA на строчке: %u, %x, %u kb\n", __LINE__,
|
|
data, ((w * h + 2) * sizeof(unsigned int)) / 1024);
|
|
return NULL;
|
|
}
|
|
|
|
switch (ptr[2]) {
|
|
case 1:
|
|
if (ptr[6] != 0 || ptr[4] != 0 || ptr[3] != 0 ||
|
|
(ptr[7] != 24 && ptr[7] != 32)) {
|
|
TGA_ERR( );
|
|
mem_free(data);
|
|
return NULL;
|
|
}
|
|
for (y = i = 0; y < h; y++) {
|
|
k = ((!o ? h - y - 1 : y) * w);
|
|
for (x = 0; x < w; x++) {
|
|
j = ptr[m + k++] * (ptr[7] >> 3) + 18;
|
|
data[2 + i++] = ((ptr[7] == 32 ? ptr[j + 3] : 0xFF) << 24) |
|
|
(ptr[j + 2] << 16) | (ptr[j + 1] << 8) |
|
|
ptr[j];
|
|
}
|
|
}
|
|
break;
|
|
case 2:
|
|
if (ptr[5] != 0 || ptr[6] != 0 || ptr[1] != 0 ||
|
|
(ptr[16] != 24 && ptr[16] != 32)) {
|
|
TGA_ERR( );
|
|
mem_free(data);
|
|
return NULL;
|
|
}
|
|
for (y = i = 0; y < h; y++) {
|
|
j = ((!o ? h - y - 1 : y) * w * (ptr[16] >> 3));
|
|
for (x = 0; x < w; x++) {
|
|
data[2 + i++] =
|
|
((ptr[16] == 32 ? ptr[j + 3] : 0xFF) << 24) |
|
|
(ptr[j + 2] << 16) | (ptr[j + 1] << 8) | ptr[j];
|
|
j += ptr[16] >> 3;
|
|
}
|
|
}
|
|
break;
|
|
case 9:
|
|
if (ptr[6] != 0 || ptr[4] != 0 || ptr[3] != 0 ||
|
|
(ptr[7] != 24 && ptr[7] != 32)) {
|
|
TGA_ERR( );
|
|
mem_free(data);
|
|
return NULL;
|
|
}
|
|
y = i = 0;
|
|
for (x = 0; x < w * h && m < size;) {
|
|
k = ptr[m++];
|
|
if (k > 127) {
|
|
k -= 127;
|
|
x += k;
|
|
j = ptr[m++] * (ptr[7] >> 3) + 18;
|
|
while (k--) {
|
|
if (!(i % w)) {
|
|
i = ((!o ? h - y - 1 : y) * w);
|
|
y++;
|
|
}
|
|
data[2 + i++] =
|
|
((ptr[7] == 32 ? ptr[j + 3] : 0xFF) << 24) |
|
|
(ptr[j + 2] << 16) | (ptr[j + 1] << 8) | ptr[j];
|
|
}
|
|
} else {
|
|
k++;
|
|
x += k;
|
|
while (k--) {
|
|
j = ptr[m++] * (ptr[7] >> 3) + 18;
|
|
if (!(i % w)) {
|
|
i = ((!o ? h - y - 1 : y) * w);
|
|
y++;
|
|
}
|
|
data[2 + i++] =
|
|
((ptr[7] == 32 ? ptr[j + 3] : 0xFF) << 24) |
|
|
(ptr[j + 2] << 16) | (ptr[j + 1] << 8) | ptr[j];
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case 10:
|
|
if (ptr[5] != 0 || ptr[6] != 0 || ptr[1] != 0 ||
|
|
(ptr[16] != 24 && ptr[16] != 32)) {
|
|
TGA_ERR( );
|
|
mem_free(data);
|
|
return NULL;
|
|
}
|
|
y = i = 0;
|
|
for (x = 0; x < w * h && m < size;) {
|
|
k = ptr[m++];
|
|
if (k > 127) {
|
|
k -= 127;
|
|
x += k;
|
|
while (k--) {
|
|
if (!(i % w)) {
|
|
i = ((!o ? h - y - 1 : y) * w);
|
|
y++;
|
|
}
|
|
data[2 + i++] =
|
|
((ptr[16] == 32 ? ptr[m + 3] : 0xFF) << 24) |
|
|
(ptr[m + 2] << 16) | (ptr[m + 1] << 8) | ptr[m];
|
|
}
|
|
m += ptr[16] >> 3;
|
|
} else {
|
|
k++;
|
|
x += k;
|
|
while (k--) {
|
|
if (!(i % w)) {
|
|
i = ((!o ? h - y - 1 : y) * w);
|
|
y++;
|
|
}
|
|
data[2 + i++] =
|
|
((ptr[16] == 32 ? ptr[m + 3] : 0xFF) << 24) |
|
|
(ptr[m + 2] << 16) | (ptr[m + 1] << 8) | ptr[m];
|
|
m += ptr[16] >> 3;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
default: {
|
|
TGA_ERR( );
|
|
mem_free(data);
|
|
return NULL;
|
|
}
|
|
}
|
|
data[0] = w;
|
|
data[1] = h;
|
|
return data;
|
|
}
|
|
void main( ) {
|
|
for (uint64_t i = 512; i > 1; i--) { pause( ); }
|
|
LOG("Загрузка завершена! 1\n");
|
|
unsigned int *res = tga_parse((uint8_t *)bootpng_ptr, bootpng_size);
|
|
LOG("Загрузка завершена! 2 %x\n", res);
|
|
|
|
tga_header_t *head = (tga_header_t *)bootpng_ptr;
|
|
|
|
if (res != NULL) {
|
|
LOG("Размер экрана загрузки: %ux%u \n", res[0], res[1]);
|
|
}
|
|
LOG("Размер экрана загрузки: %ux%u \n", head->h, head->w);
|
|
mem_dump_memory( );
|
|
|
|
fb_print_buf(0, 0, head->w, head->h, (uint32_t *)(res + 2));
|
|
} |