// Copyright (c) 2007, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//   * Neither the name of the Aegisub Group nor the names of its contributors
//     may be used to endorse or promote products derived from this software
//     without specific prior written permission.
//
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// Aegisub Project http://www.aegisub.org/
//
// $Id$

/// @file video_frame.h
/// @see video_frame.cpp
/// @ingroup video
///


#pragma once
#ifndef AGI_PRE
#include <wx/image.h>
#endif


/// DOCME
enum VideoFrameFormat {

	/// DOCME
	FORMAT_NONE		= 0x0000,

	/// DOCME
	FORMAT_RGB24	= 0x0001, // RGB, interleaved

	/// DOCME
	FORMAT_RGB32	= 0x0002, // RGBA, interleaved

	/// DOCME
	FORMAT_YUY2		= 0x0004, // YCbCr 4:2:2, planar

	/// DOCME
	FORMAT_YV12		= 0x0008, // YCbCr 4:2:0, planar

	/// DOCME
	FORMAT_YUV444	= 0x0010, // YCbCr 4:4:4, planar

	/// DOCME
	FORMAT_YUV444A	= 0x0020, // YCbCr 4:4:4 plus alpha, planar

	/// DOCME
	FORMAT_YUVMONO	= 0x0040, // Y only (greyscale)
};



/// DOCME
/// @class AegiVideoFrame
/// @brief DOCME
///
/// DOCME
class AegiVideoFrame {
private:

	/// DOCME
	unsigned int memSize;
	void Reset();

public:

	/// DOCME
	unsigned char *data[4];		// Pointers to the data planes. Interleaved formats only use data[0]

	/// DOCME
	VideoFrameFormat format;	// Data format

	/// DOCME
	unsigned int w;				// Width in pixels

	/// DOCME
	unsigned int h;				// Height in pixels

	/// DOCME
	unsigned int pitch[4];		// Pitch, that is, the number of bytes used by each row.


	/// DOCME
	bool flipped;				// First row is actually the bottom one

	/// DOCME
	bool invertChannels;		// Swap Red and Blue channels or U and V planes (controls RGB versus BGR ordering etc)

	/// DOCME
	bool cppAlloc;				// Allocated with C++'s "new" operator, instead of "malloc"

	AegiVideoFrame();
	AegiVideoFrame(int width,int height,VideoFrameFormat format=FORMAT_RGB32);

	void Allocate();
	void Clear();
	void CopyFrom(const AegiVideoFrame &source);
	void ConvertFrom(const AegiVideoFrame &source);

	wxImage GetImage() const;
	void GetFloat(float *buffer) const;
	int GetBpp(int plane=0) const;
};