Initial commit

1 files changed, 59 insertions, 0 deletions

diff --git a/framebuffer.c b/framebuffer.c
new file mode 100644
index 0000000..b6e922e
--- /dev/null
+++ b/framebuffer.c
@@ -0,0 +1,59 @@
+#include <stdlib.h>
+
+#include "framebuffer.h"
+
+Framebuffer fb_new(size_t width, size_t height) {
+    Framebuffer fb;
+
+    /* In case malloc() fails and we return early */
+    fb.width = 0;
+    fb.height = 0;
+
+    fb.fb = malloc(sizeof(Pixel *) * height);
+    if (fb.fb == NULL) return fb;
+
+    for (size_t i = 0; i < height; i++) {
+        fb.fb[i] = malloc(sizeof(Pixel) * width);
+        if (fb.fb[i] == NULL) {
+            /* FIXME: Memory leak; should free all prev. malloced rows */
+            fb.fb = NULL;
+            return fb;
+        }
+    }
+
+    fb.width = width;
+    fb.height = height;
+    return fb;
+}
+
+void fb_free(Framebuffer *fb) {
+    if (fb->fb == NULL) goto ret;
+
+    for (size_t i = 0; i < fb->height; i++) {
+        free(fb->fb[i]);
+    }
+    free(fb->fb);
+
+ret:
+    fb->width = 0;
+    fb->height = 0;
+    return;
+}
+
+void fb_fill(Framebuffer fb, Pixel pixel) {
+    for (size_t row = 0; row < fb.height; row++) {
+        for (size_t col = 0; col < fb.width; col++) {
+            fb_put(fb, row, col, pixel);
+        }
+    }
+}
+
+void inline fb_put(Framebuffer fb, size_t row, size_t col, Pixel pixel) {
+    fb.fb[row][col] = pixel;
+}
+
+void fb_init(void);
+
+void fb_cleanup(void);
+
+void fb_print(Framebuffer fb);