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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* capture.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/01/11 13:15:11 by cacharle #+# #+# */
/* Updated: 2020/02/03 02:25:43 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include "cub3d.h"
#define BM_FILE_TYPE 19778
#define DATA_OFFSET 1078
#define BITMAP_INFO_HEADER_SIZE 0x424d
#define CAPTURE_FILENAME "capture.bmp"
int capture(t_state *state)
{
t_bmp_header header;
render_update_window(state);
bmp_fill_header(&state->window, &header);
if (!bmp_write(&state->window, &header))
{
state_destroy(state);
return (1);
}
return (0);
}
unsigned char* createBitmapFileHeader(int height, int width, int paddingSize){
int fileSize = 14 + 40 + (3*width+paddingSize) * height;
static unsigned char fileHeader[] = {
0,0, /// signature
0,0,0,0, /// image file size in bytes
0,0,0,0, /// reserved
0,0,0,0, /// start of pixel array
};
fileHeader[ 0] = (unsigned char)('B');
fileHeader[ 1] = (unsigned char)('M');
fileHeader[ 2] = (unsigned char)(fileSize );
fileHeader[ 3] = (unsigned char)(fileSize>> 8);
fileHeader[ 4] = (unsigned char)(fileSize>>16);
fileHeader[ 5] = (unsigned char)(fileSize>>24);
fileHeader[10] = (unsigned char)(14 + 40);
return fileHeader;
}
unsigned char* createBitmapInfoHeader(int height, int width){
static unsigned char infoHeader[] = {
0,0,0,0, /// header size
0,0,0,0, /// image width
0,0,0,0, /// image height
0,0, /// number of color planes
0,0, /// bits per pixel
0,0,0,0, /// compression
0,0,0,0, /// image size
0,0,0,0, /// horizontal resolution
0,0,0,0, /// vertical resolution
0,0,0,0, /// colors in color table
0,0,0,0, /// important color count
};
infoHeader[ 0] = (unsigned char)(40);
infoHeader[ 4] = (unsigned char)(width );
infoHeader[ 5] = (unsigned char)(width>> 8);
infoHeader[ 6] = (unsigned char)(width>>16);
infoHeader[ 7] = (unsigned char)(width>>24);
infoHeader[ 8] = (unsigned char)(height );
infoHeader[ 9] = (unsigned char)(height>> 8);
infoHeader[10] = (unsigned char)(height>>16);
infoHeader[11] = (unsigned char)(height>>24);
infoHeader[12] = (unsigned char)(1);
infoHeader[14] = (unsigned char)(3*8);
return infoHeader;
}
t_bool bmp_write(t_image *image, t_bmp_header *header)
{
int fd;
unsigned char padding[3] = {0, 0, 0};
int paddingSize = (4 - (image->width*3) % 4) % 4; //redundant?
unsigned char* fileHeader = createBitmapFileHeader(image->height, image->width, paddingSize);
unsigned char* infoHeader = createBitmapInfoHeader(image->height, image->width);
if ((fd = open(CAPTURE_FILENAME, O_WRONLY | O_CREAT, S_IRWXU)) < 0)
return (FALSE);
write(fd, fileHeader, 14);
write(fd, infoHeader, 40);
/* write(fd, &header, sizeof(t_bmp_header)); */
for (int i = 0; i < image->width; i++)
{
for (int j = 0; j < image->height; j++)
{
write(fd, &image->data[4 * (i * image->width + j)], 3);
}
write(fd, padding, paddingSize);
}
/* write(fd, image->data, image->width * image->height * 4); */
close(fd);
return (TRUE);
}
void bmp_fill_header(t_image *image, t_bmp_header *header)
{
header->file_header.file_type = BM_FILE_TYPE;
header->file_header.file_size = sizeof(t_bmp_header) + image->width * image->height * 3;
header->file_header.reserved1 = 0;
header->file_header.reserved1 = 0;
header->file_header.offset = sizeof(t_bmp_header);
header->info_header.size = sizeof(header->info_header);
header->info_header.width = image->width;
header->info_header.height = image->height;
header->info_header.planes = 0;
header->info_header.depth = 8 * 3;
header->info_header.compression = 0;
header->info_header.size_image = image->width * image->height * 3;
header->info_header.w_pix_per_meter = 0;
header->info_header.h_pix_per_meter = 0;
header->info_header.color_used = 0;
header->info_header.color_important = 0;
/* header->color_table.blue = 0xff; */
/* header->color_table.green = 0xff; */
/* header->color_table.red = 0xff; */
/* header->color_table.reserved = 0; */
}
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