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feat: change orientation (#7)

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* feat: change orientation (wip)

* wip

* working rotation

* small fix in help
This commit is contained in:
Klemek
2025-06-05 12:03:15 +02:00
committed by GitHub
parent 533960f46f
commit 0172286d9a
6 changed files with 34 additions and 19 deletions
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src/bmp.c
+9 -6
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@@ -75,7 +75,7 @@ void bmp_data_line(unsigned char *buffer, unsigned short width,
}
void bmp_generate(unsigned short width, unsigned short height,
unsigned char color_depth, char *file_path,
unsigned char color_depth, bool descending, char *file_path,
line_fn generate_line) {
FILE *fptr;
fptr = fopen(file_path, "w");
@@ -84,14 +84,17 @@ void bmp_generate(unsigned short width, unsigned short height,
free(header);
unsigned int data_length =
((unsigned int)width) * ((unsigned int)color_depth);
unsigned short y;
unsigned int line_length = bmp_data_line_length(width, color_depth);
unsigned char *data_buffer = (unsigned char *)malloc(data_length);
unsigned char *line_buffer =
(unsigned char *)malloc(bmp_data_line_length(width, color_depth));
unsigned char *line_buffer = (unsigned char *)malloc(line_length);
unsigned short y;
for (y = 0; y < height; y++) {
generate_line(height - y - 1, data_buffer, data_length);
generate_line(y, data_buffer, data_length);
bmp_data_line(line_buffer, width, color_depth, data_buffer);
fwrite(line_buffer, bmp_data_line_length(width, color_depth), 1, fptr);
if (descending) {
fseek(fptr, HEADER_SIZE + (height - y - 1) * line_length, SEEK_SET);
}
fwrite(line_buffer, line_length, 1, fptr);
}
free(line_buffer);
free(data_buffer);