initial

1 files changed, 92 insertions, 0 deletions

diff --git a/fbgl.h b/fbgl.h
new file mode 100644
index 0000000..7dbcfb4
--- /dev/null
+++ b/fbgl.h
@@ -0,0 +1,92 @@
+#ifndef __FBGL_H__
+#define __FBGL_H__
+
+#define VERSION "0.1.0"
+#define NAME "FBGL"
+#define DEFAULT_FB "/dev/fb0"
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <linux/fb.h>
+#include <stddef.h>
+#include <stdio.h>
+
+/**
+* Structs
+*/
+typedef struct fbgl {
+	int width;
+	int height;
+	int fd;
+	size_t screen_size;
+	uint32_t *pixels;
+	struct fb_var_screeninfo vinfo; // Variable screen information
+	struct fb_fix_screeninfo finfo; // Fixed screen information
+} fbgl_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * General purpose methods
+ */
+char const *fbgl_name_info(void);
+char const *fbgl_version_info(void);
+
+/*Create and destroy methods*/
+int fbgl_init(const char *device, fbgl_t *fb);
+void fbgl_destroy(void);
+
+/**
+* Drawing functions
+*/
+void fbgl_clear(uint32_t color);
+void fbgl_put_pixel(int x, int y, uint32_t color);
+void fbgl_draw_line(int x0, int y0, int x1, int y1, uint32_t color);
+
+/**
+* Display methods
+*/
+void fbgl_display();
+
+/**
+* Access framebuffer data methods
+*/
+uint32_t *fb_get_data(void);
+int fb_get_width(void);
+int fb_get_height(void);
+
+#ifdef FBGL_IMPLEMENTATION
+
+char const *fbgl_name_info(void)
+{
+	return NAME;
+}
+
+char const *fbgl_version_info(void)
+{
+	return VERSION;
+}
+
+int fbgl_init(const char *device, fbgl_t *fb)
+{
+	fb->fd = device == NULL ? open(DEFAULT_FB, O_RDWR) :
+				  open(device, O_RDWR);
+	if (fb->fd == -1) {
+		perror("Error openning framebuffer device");
+		return -1;
+	}
+}
+
+#endif
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+#endif // __FBGL_H__