Merge pull request #47370 from fire/etcpak

Add thirdparty library etcpak for faster imports.

1 files changed, 50 insertions, 0 deletions

diff --git a/thirdparty/etcpak/Bitmap.hpp b/thirdparty/etcpak/Bitmap.hpp
new file mode 100644
index 0000000000..fae8c936ed
--- /dev/null
+++ b/thirdparty/etcpak/Bitmap.hpp
@@ -0,0 +1,50 @@
+#ifndef __DARKRL__BITMAP_HPP__
+#define __DARKRL__BITMAP_HPP__
+
+#include <future>
+#include <memory>
+#include <mutex>
+#include <stdint.h>
+
+#include "Semaphore.hpp"
+#include "Vector.hpp"
+
+enum class Channels
+{
+    RGB,
+    Alpha
+};
+
+class Bitmap
+{
+public:
+    Bitmap( const char* fn, unsigned int lines, bool bgr );
+    Bitmap( const v2i& size );
+    virtual ~Bitmap();
+
+    void Write( const char* fn );
+
+    uint32_t* Data() { if( m_load.valid() ) m_load.wait(); return m_data; }
+    const uint32_t* Data() const { if( m_load.valid() ) m_load.wait(); return m_data; }
+    const v2i& Size() const { return m_size; }
+    bool Alpha() const { return m_alpha; }
+
+    const uint32_t* NextBlock( unsigned int& lines, bool& done );
+
+protected:
+    Bitmap( const Bitmap& src, unsigned int lines );
+
+    uint32_t* m_data;
+    uint32_t* m_block;
+    unsigned int m_lines;
+    unsigned int m_linesLeft;
+    v2i m_size;
+    bool m_alpha;
+    Semaphore m_sema;
+    std::mutex m_lock;
+    std::future<void> m_load;
+};
+
+typedef std::shared_ptr<Bitmap> BitmapPtr;
+
+#endif