camcodec.h

//
// Huffyuv v1.3.1, by Ben Rudiak-Gould.
// http://www.math.berkeley.edu/~benrg/huffyuv.html
//
// This file is copyright 2000 Ben Rudiak-Gould, and distributed under
// the terms of the GNU General Public License, v2 or later.  See
// http://www.gnu.org/copyleft/gpl.html.
//
// I edit these files in 10-point Verdana, a proportionally-spaced font.
// You may notice formatting oddities if you use a monospaced font.
//

#include <windows.h>
#include <vfw.h>
#pragma hdrstop

static const DWORD FOURCC_CSCD = mmioFOURCC('C','S','C','D');   // our compressed format
static const DWORD FOURCC_YUY2 = mmioFOURCC('Y','U','Y','2');   // uncompressed YUY2
static const DWORD FOURCC_UYVY = mmioFOURCC('U','Y','V','Y');   // uncompressed UYVY
static const DWORD FOURCC_VYUY = mmioFOURCC('V','Y','U','Y');   // an alias for YUY2 used by ATI cards

extern HMODULE hmoduleCamcodec;

struct CodecInst
{
	// methods

	unsigned char* prevFrame;
	unsigned char* diffFrame;
	unsigned char* diffinput; 

	int m_algorithm;
	int m_gzip_level;

	int m_autokeyframe;
	int m_autokeyframe_rate;
	int m_currentFrame;

	int m_compressionHasBegun;
	int m_decompressionHasBegun;

	CodecInst();  

	BOOL QueryAbout();
	DWORD About(HWND hwnd);

	BOOL QueryConfigure();
	DWORD Configure(HWND hwnd);

	DWORD GetState(LPVOID pv, DWORD dwSize);
	DWORD SetState(LPVOID pv, DWORD dwSize);

	DWORD GetInfo(ICINFO* icinfo, DWORD dwSize);

	DWORD CompressQuery(LPBITMAPINFOHEADER lpbiIn, LPBITMAPINFOHEADER lpbiOut);
	DWORD CompressGetFormat(LPBITMAPINFOHEADER lpbiIn, LPBITMAPINFOHEADER lpbiOut);
	DWORD CompressBegin(LPBITMAPINFOHEADER lpbiIn, LPBITMAPINFOHEADER lpbiOut);
	DWORD CompressGetSize(LPBITMAPINFOHEADER lpbiIn, LPBITMAPINFOHEADER lpbiOut);
	DWORD Compress(ICCOMPRESS* icinfo, DWORD dwSize);
	DWORD CompressEnd();

	DWORD CompressRGB(ICCOMPRESS* icinfo);

	DWORD	DecompressRGB(ICDECOMPRESS* icinfo);
	DWORD DecompressQuery(LPBITMAPINFOHEADER lpbiIn, LPBITMAPINFOHEADER lpbiOut);
	DWORD DecompressGetFormat(LPBITMAPINFOHEADER lpbiIn, LPBITMAPINFOHEADER lpbiOut);
	DWORD DecompressBegin(LPBITMAPINFOHEADER lpbiIn, LPBITMAPINFOHEADER lpbiOut);
	DWORD Decompress(ICDECOMPRESS* icinfo, DWORD dwSize);
	DWORD DecompressGetPalette(LPBITMAPINFOHEADER lpbiIn, LPBITMAPINFOHEADER lpbiOut);
	DWORD DecompressEnd();  

	DWORD FreeResources();
};

CodecInst* Open(ICOPEN* icinfo);
DWORD Close(CodecInst* pinst);