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// Copyright 2007-2022 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.

#ifndef MUMBLE_LIB_H_
#define MUMBLE_LIB_H_

#define _UNICODE
#ifdef _WIN32_WINNT
#	undef _WIN32_WINNT
#endif
#define _WIN32_WINNT 0x0501
#include <windows.h>
#include "HardHook.h"
#include "ods.h"
#include "overlay.h"
#include <boost/optional.hpp>
#include <cmath>
#include <ctype.h>
#include <map>
#include <stdarg.h>
#include <stdio.h>
#include <string>
#include <vector>

#define lround(x) static_cast< long int >((x) + (((x) >= 0.0) ? 0.5 : -0.5))

#define ARRAY_SIZE_BYTES(x) sizeof(x)
#define ARRAY_NUM_ELEMENTS(x) (sizeof(x) / sizeof((x)[0]))

using namespace std;

void __cdecl ods(const char *format, ...);

const int MODULEFILEPATH_BUFLEN                   = 2048;
const int PROCNAMEFILEPATH_BUFLEN                 = 1024;
const int PROCNAMEFILEPATH_EXTENDED_EXTLEN        = 64;
const int PROCNAMEFILEPATH_EXTENDED_BUFFER_BUFLEN = PROCNAMEFILEPATH_BUFLEN + PROCNAMEFILEPATH_EXTENDED_EXTLEN;

struct Direct3D9Data {
	/// Filepath of the module the offsets are for.
	wchar_t wcFileName[MODULEFILEPATH_BUFLEN];
	size_t offsetCreate;
	size_t offsetCreateEx;
};

struct DXGIData {
	/// Filepath of the module the offsets are for.
	wchar_t wcFileName[MODULEFILEPATH_BUFLEN];
	size_t offsetPresent;
	size_t offsetResize;
};

struct D3D10Data {
	/// Filepath of the module the offsets are for.
	wchar_t wcFileName[MODULEFILEPATH_BUFLEN];
	size_t offsetAddRef;
	size_t offsetRelease;
};

struct D3D11Data {
	/// Filepath of the module the offsets are for.
	wchar_t wcFileName[MODULEFILEPATH_BUFLEN];
	size_t offsetAddRef;
	size_t offsetRelease;
};

struct SharedData {
	bool bHooked;
};

class Mutex {
protected:
	static CRITICAL_SECTION cs;

public:
	static void init();
	Mutex();
	~Mutex();
};

class Pipe {
private:
	HANDLE hSocket;
	HANDLE hMemory;

	void release();

protected:
	unsigned int uiWidth, uiHeight;
	unsigned int uiLeft, uiTop, uiRight, uiBottom;
	unsigned char *a_ucTexture;
	DWORD dwAlreadyRead;
	OverlayMsg omMsg;

	void checkMessage(unsigned int w, unsigned int h);
	bool sendMessage(const OverlayMsg &m);
	virtual void blit(unsigned int x, unsigned int y, unsigned int w, unsigned int h) = 0;
	virtual void setRect()                                                            = 0;
	virtual void newTexture(unsigned int w, unsigned int h)                           = 0;
	Pipe();
	virtual ~Pipe();

public:
	void disconnect();
};

// From lib.cpp
extern void checkHooks(bool preonly = false);
// From dxgi.cpp
extern void checkDXGIHook(bool preonly = false);
// From d3d10.cpp
extern void checkDXGI10Hook(bool preonly = false);
// From d3d11.cpp
extern void checkDXGI11Hook(bool preonly = false);
// From d3d9.cpp
extern void checkD3D9Hook(bool preonly = false);
// From opengl.cpp
extern void checkOpenGLHook();

// From d3d9.cpp
extern Direct3D9Data *d3dd;
// From dxgi.cpp
extern DXGIData *dxgi;
// From d3d10.cpp
extern D3D10Data *d3d10;
// From d3d11.cpp
extern D3D11Data *d3d11;
// From lib.cpp
extern BOOL bIsWin8;

// From lib.cpp
/// Checks if the module of the function pointer fnptr equals the module filepath
/// of refmodulepath.
///
/// @param fnptr
/// @param refmodulepath the module path to compare against
/// @param logPrefix Used for debug logging.
/// @param fnName name of the method fnptr points to. used for debug logging
/// @return true if the module filepath of the function pointer matches the reference one
extern bool IsFnInModule(voidFunc fnptr, wchar_t *refmodulepath, const std::string &logPrefix,
						 const std::string &fnName);

// From lib.cpp
/// Checks fnptr is in a loaded module with module path refmodulepath.
///
/// @return Offset as int or < 0 on failure.
extern boost::optional< size_t > GetFnOffsetInModule(voidFunc fnptr, wchar_t *refmodulepath,
													 unsigned int refmodulepathLen, const std::string &logPrefix,
													 const std::string &fnName);

#endif