1 files changed, 125 insertions, 0 deletions
diff --git a/src/ft_save_to_bmp.c b/src/ft_save_to_bmp.c
new file mode 100644
index 0000000..90bbb1f
--- /dev/null
+++ b/src/ft_save_to_bmp.c
@@ -0,0 +1,125 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_save_to_bmp.c                                   :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: rbousset <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/29 20:50:35 by rbousset          #+#    #+#             */
+/*   Updated: 2020/02/29 20:50:37 by rbousset         ###   ########lyon.fr   */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <libft.h>
+#include <cub3d.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdint.h>
+
+static char
+	*ft_set_file_name(t_map *ml)
+{
+	char	*str;
+
+	if (ft_strrchr(ml->filename, '/'))
+	{
+		if (!(str = (char*)malloc((ft_strlen(FT_BMP_SAVE_DIR) +
+								ft_strlen(ft_strrchr(ml->filename, '/') + 1)
+								+ 1) * sizeof(char))))
+			return (NULL);
+		ft_sprintf(str, "%s%s", FT_BMP_SAVE_DIR,
+					ft_strrchr(ml->filename, '/') + 1);
+	}
+	else
+	{
+		if (!(str = (char*)malloc((ft_strlen(FT_BMP_SAVE_DIR) +
+				ft_strlen(ml->filename) + 1) * sizeof(char))))
+			return (NULL);
+		ft_sprintf(str, "%s%s", FT_BMP_SAVE_DIR, ml->filename);
+	}
+	ft_memcpy(ft_strrchr(str, '.') + 1, "bmp", 3);
+	return (str);
+}
+
+static uint8_t
+	*ft_convert_image_to_bmp(t_img img, t_cub *cl)
+{
+	uint8_t		*bmp;
+	t_bmp_rgb	px;
+	uint32_t	y;
+	uint32_t	x;
+	uint32_t	i;
+
+	(void)img;
+	if (!(bmp = (uint8_t*)malloc((3 * cl->wlist.x_size
+			* cl->wlist.y_size) * sizeof(uint8_t))))
+		return (NULL);
+	y = cl->wlist.y_size;
+	i = 0;
+	while (--y > 0)
+	{
+		x = -1;
+		while (++x < cl->wlist.x_size)
+		{
+			px = ft_hex_to_rgb(*(int*)(cl->img.ptr
+				+ (x * 4 + (y * cl->img.sizeline))));
+			*(bmp + i++) = (uint8_t)px.b;
+			*(bmp + i++) = (uint8_t)px.g;
+			*(bmp + i++) = (uint8_t)px.r;
+		}
+	}
+	return (bmp);
+}
+
+static int8_t
+	ft_write_bmp(const char *fname, uint32_t h, uint32_t w, uint8_t *bmp)
+{
+	t_bmp_file		bmp_file;
+	t_bmp_info		bmp_info;
+	uint32_t		size;
+	int				fd;
+
+	size = w * h * 3;
+	bmp_file = ft_init_bmp();
+	bmp_info = ft_init_bmp_info();
+	bmp_file.file_size = size + sizeof(t_bmp_file) + sizeof(t_bmp_info);
+	bmp_file.offset_data = bmp_file.file_size - size;
+	bmp_info.size = 40;
+	bmp_info.width = w;
+	bmp_info.height = h;
+	bmp_info.bit_count = 24;
+	bmp_info.size_image = size;
+	if (!(fd = open(fname, O_RDWR | O_CREAT, 0644)))
+		return (-1);
+	write(fd, &bmp_file, sizeof(t_bmp_file));
+	write(fd, &bmp_info, sizeof(t_bmp_info));
+	write(fd, bmp, size);
+	close(fd);
+	return (0);
+}
+
+int8_t
+	ft_save_to_bmp(t_cub *cl)
+{
+	uint8_t			*bmp;
+	char			*fname;
+
+	if (!(fname = ft_set_file_name(&cl->mlist)))
+		return (-1);
+	if (!(bmp = ft_convert_image_to_bmp(cl->img, cl)))
+	{
+		ft_memdel((void**)&fname);
+		return (-1);
+	}
+	if (ft_write_bmp(fname, cl->wlist.y_size, cl->wlist.x_size, bmp) < 0)
+	{
+		ft_memdel((void**)&bmp);
+		ft_memdel((void**)&fname);
+		return (-1);
+	}
+	ft_memdel((void**)&bmp);
+	ft_memdel((void**)&fname);
+	return (0);
+}