Add Image data structure

src/image.c

@@ -0,0 +1,30 @@
+#include "image.h"
+#include "mem_allocator.h"
+#include "mem_libc.h"
+#include <stddef.h>
+#include <string.h>
+
+Image *create_image(u64 width, u64 height, Pixel *data,
+                    const Allocator *allocator) {
+  Allocator alloc;
+  if (!allocator) {
+    alloc = wapp_mem_libc_allocator();
+  } else {
+    alloc = *allocator;
+  }
+
+  u64 buf_length = width * height;
+  u64 total_size = sizeof(Image) + sizeof(Pixel) * buf_length;
+
+  Image *img = wapp_mem_allocator_alloc(&alloc, total_size);
+  if (!img) {
+    return NULL;
+  }
+
+  img->width = width;
+  img->height = height;
+  img->buf_length = buf_length;
+  memcpy(img->data, data, buf_length);
+
+  return img;
+}

src/image.h

@@ -0,0 +1,34 @@
+#ifndef IMAGE_H
+#define IMAGE_H
+
+#include "mem_allocator.h"
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+#include "aliases.h"
+
+typedef struct pixel Pixel;
+struct pixel {
+  u8 r;
+  u8 g;
+  u8 b;
+  u8 a;
+};
+
+typedef struct image Image;
+struct image {
+  u64 width;
+  u64 height;
+  u64 buf_length;
+  Pixel data[];
+};
+
+Image *create_image(u64 width, u64 height, Pixel *data,
+                    const Allocator *allocator);
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus
+
+#endif // !IMAGE_H