feat Implement an algorithm to decode QOI

* src/vk/qoi.cpp: Implement an algorithm to decode QOI. This eliminates
an unnecessary dependency as the engine does not need to encode QOI
files, only decode them.

1 files changed, 41 insertions, 0 deletions

diff --git a/src/vk/qoi.hpp b/src/vk/qoi.hpp
new file mode 100644
index 0000000..8a8688f
--- /dev/null
+++ b/src/vk/qoi.hpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2022-2023 Frederico de Oliveira Linhares
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <cstdint>
+
+namespace VK::QOI
+{
+  struct Header
+  {
+    char magic[4];
+    uint32_t width;
+    uint32_t height;
+    uint8_t channels;
+    uint8_t colorspace;
+  };
+
+  struct Image
+  {
+    Header header;
+    uint32_t pixels_len;
+    uint8_t channels;
+    uint8_t *pixels;
+
+    Image(const char *file_path, uint8_t channels);
+    ~Image();
+  };
+
+}