/* 
 * Argyll Color Correction System
 * Web Display target patch window
 *
 * Author: Graeme W. Gill
 * Date:   3/4/12
 *
 * Copyright 2013 Graeme W. Gill
 * All rights reserved.
 *
 * This material is licenced under the GNU AFFERO GENERAL PUBLIC LICENSE Version 3 :-
 * see the License.txt file for licencing details.
 */

#include <stdio.h>
#include <string.h>
#ifdef NT
# include <winsock2.h>
# include <shlwapi.h>
#endif
#include "copyright.h"
#include "aconfig.h"
#include "icc.h"
#include "numsup.h"
#include "cgats.h"
#include "conv.h"
#include "dispwin.h"
#include "madvrwin.h"
#include "conv.h"
#include "mongoose.h"

#define ENABLE_RAMDAC

#undef DEBUG
//#define STANDALONE_TEST

#ifdef DEBUG
#define errout stderr
# define debug(xx)	fprintf(errout, xx )
# define debug2(xx)	fprintf xx
# define debugr(xx)	fprintf(errout, xx )
# define debugr2(xx)	fprintf xx
# define debugrr(xx)	fprintf(errout, xx )
# define debugrr2(xx)	fprintf xx
# define debugrr2l(lev, xx)	fprintf xx
#else
#define errout stderr
# define debug(xx) 
# define debug2(xx)
# define debugr(xx) if (p->ddebug) fprintf(errout, xx ) 
# define debugr2(xx) if (p->ddebug) fprintf xx
# define debugrr(xx) if (callback_ddebug) fprintf(errout, xx ) 
# define debugrr2(xx) if (callback_ddebug) fprintf xx
# define debugrr2l(lev, xx) if (callback_ddebug >= lev) fprintf xx
#endif

/* ----------------------------------------------- */
/* MadVR functions */

#ifndef KEY_WOW64_32KEY
# define KEY_WOW64_32KEY (0x0200)
#endif

/* Incase shlwapi.h doesn't declare this */
#include <pshpack1.h>
typedef struct _ADLLVERSIONINFO2
{
    DLLVERSIONINFO info1;
    DWORD dwFlags;
    ULONGLONG ullVersion;
} ADLLVERSIONINFO2;
#include <poppack.h>

HMODULE HcNetDll = NULL;
BOOL (WINAPI *madVR_BlindConnect)(BOOL searchLan, DWORD timeOut) = NULL;
BOOL (WINAPI *madVR_GetVersion)(DWORD *version);
BOOL (WINAPI *madVR_SetOsdText)(LPCWSTR text);
BOOL (WINAPI *madVR_Disable3dlut)() = NULL;
BOOL (WINAPI *madVR_GetDeviceGammaRamp)(LPVOID ramp) = NULL;
BOOL (WINAPI *madVR_SetDeviceGammaRamp)(LPVOID ramp) = NULL;
BOOL (WINAPI *madVR_GetPatternConfig)(int *patternAreaInPercent, int *backgroundLevelInPercent,
                                      int *backgroundMode, int *blackBorderWidth) = NULL;
BOOL (WINAPI *madVR_SetPatternConfig)(int patternAreaInPercent, int backgroundLevelInPercent,
                                      int backgroundMode, int blackBorderWidth) = NULL;
BOOL (WINAPI *madVR_ShowRGB)(double r, double g, double b) = NULL;
BOOL (WINAPI *madVR_SetProgressBarPos)(int currentPos, int maxPos);
BOOL (WINAPI *madVR_Disconnect)() = NULL;

/* Locate and populate the MadVR functions */
/* Return NZ on failure */
static int initMadVR(dispwin *p) {
	wchar_t *dllname;
	WCHAR modname[MAX_PATH];
	DWORD hnd;
	DWORD len = 0;
	WORD v1 = 0, v2 = 0, v3 = 0, v4 = 0;		/* MadVR version */

	if (sizeof(dllname) > 4)		/* Compiled as 64 bit */
		dllname = L"madHcNet64.dll";
	else
		dllname = L"madHcNet32.dll";

	if ((HcNetDll = LoadLibraryW(dllname)) == NULL) {
		HKEY hk1;
    	if (RegOpenKeyExW(HKEY_CLASSES_ROOT, L"CLSID\\{E1A8B82A-32CE-4B0D-BE0D-AA68C772E423}\\InprocServer32", 0, KEY_QUERY_VALUE | KEY_WOW64_32KEY, &hk1) == ERROR_SUCCESS) {
			DWORD size;
			LPWSTR us1;
			int i1;
			size = MAX_PATH * 2 + 2;
		    us1 = (LPWSTR) LocalAlloc(LPTR, size + 20);
		    i1 = RegQueryValueExW(hk1, NULL, NULL, NULL, (LPBYTE) us1, &size);
			if (i1 == ERROR_MORE_DATA) {
				LocalFree(us1);
				us1 = (LPWSTR) LocalAlloc(LPTR, size + 20);
				i1 = RegQueryValueExW(hk1, NULL, NULL, NULL, (LPBYTE) us1, &size);
			}
			if (i1 == ERROR_SUCCESS) {
				for (i1 = lstrlenW(us1) - 2; i1 > 0; i1--)
					if (us1[i1] == L'\\') {
						us1[i1 + 1] = 0;
						break;
					}
				wcscat(us1, dllname);
				HcNetDll = LoadLibraryW(us1);
			}
			LocalFree(us1);
			RegCloseKey(hk1);
		}
	}
	if (HcNetDll != NULL) {
		HRESULT (WINAPI *dllgetver)(ADLLVERSIONINFO2 *) = NULL;

		*(FARPROC*)&dllgetver = GetProcAddress(HcNetDll, "DllGetVersion");

		if (dllgetver != NULL) {
			ADLLVERSIONINFO2 ver;

			ver.info1.cbSize = sizeof(ADLLVERSIONINFO2);
			dllgetver(&ver);

			v1 = 0xffff & (ver.ullVersion >> 48);
			v2 = 0xffff & (ver.ullVersion >> 32);
			v3 = 0xffff & (ver.ullVersion >> 16);
			v4 = 0xffff & ver.ullVersion;

		} else  {
			debugr2((errout,"MadVR DllGetVersion failed - can't determine DLL version\n"));
		}
	}

	if (HcNetDll != NULL) {
		*(FARPROC*)&madVR_BlindConnect       = GetProcAddress(HcNetDll, "madVR_BlindConnect");
		*(FARPROC*)&madVR_GetVersion         = GetProcAddress(HcNetDll, "madVR_GetVersion");
		*(FARPROC*)&madVR_SetOsdText         = GetProcAddress(HcNetDll, "madVR_SetOsdText");
		*(FARPROC*)&madVR_Disable3dlut       = GetProcAddress(HcNetDll, "madVR_Disable3dlut");
		*(FARPROC*)&madVR_GetDeviceGammaRamp = GetProcAddress(HcNetDll, "madVR_GetDeviceGammaRamp");
		*(FARPROC*)&madVR_SetDeviceGammaRamp = GetProcAddress(HcNetDll, "madVR_SetDeviceGammaRamp");
		*(FARPROC*)&madVR_GetPatternConfig   = GetProcAddress(HcNetDll, "madVR_GetPatternConfig");
		*(FARPROC*)&madVR_SetPatternConfig   = GetProcAddress(HcNetDll, "madVR_SetPatternConfig");
		*(FARPROC*)&madVR_ShowRGB            = GetProcAddress(HcNetDll, "madVR_ShowRGB");
		*(FARPROC*)&madVR_SetProgressBarPos  = GetProcAddress(HcNetDll, "madVR_SetProgressBarPos");
		*(FARPROC*)&madVR_Disconnect         = GetProcAddress(HcNetDll, "madVR_Disconnect");
	
		if (madVR_BlindConnect
		 && madVR_GetVersion
		 && madVR_SetOsdText
		 && madVR_Disable3dlut
		 && madVR_GetDeviceGammaRamp
		 && madVR_SetDeviceGammaRamp
		 && madVR_GetPatternConfig
		 && madVR_SetPatternConfig
		 && madVR_ShowRGB
		 && madVR_SetProgressBarPos
		 && madVR_Disconnect) {
			DWORD ver = 0;
			/* Return value is unclear */
			if (!madVR_GetVersion(&ver))
				debugr2((errout,"MadVR_GetVersion failed - can't determine MadVR version\n"));

			debugr2((errout,"Found all required functions in %ls V%d.%d.%d.%d MadVR V%x.%x.%x.%x functions\n",dllname,v1,v2,v3,v4, 0xff & (ver >> 24), 0xff & (ver >> 16), 0xff & (ver >> 8), 0xff & ver));
			return 0;
		}
		debugr2((errout,"Failed to locate MadVR function in %ls %d.%d.%d.%d\n",dllname,v1,v2,v3,v4));
		FreeLibrary(HcNetDll);
	} else {
		debugr2((errout,"Failed to load %ls\n",dllname));
	}
	return 1;
}

static void deinitMadVR(dispwin *p) {
	if (HcNetDll != NULL) {
		FreeLibrary(HcNetDll);
		HcNetDll = NULL;
	}
}

/* ----------------------------------------------- */

/* Get RAMDAC values. ->del() when finished. */
/* Return NULL if not possible */
static ramdac *madvrwin_get_ramdac(dispwin *p) {
	ramdac *r = NULL;

#ifdef ENABLE_RAMDAC
	WORD vals[3][256];		/* 256 x 16 bit elements (Quantize) */
	int i, j;

	debugr("madvrwin_get_ramdac called\n");

	/* Allocate a ramdac */
	if ((r = (ramdac *)calloc(sizeof(ramdac), 1)) == NULL) {
		debugr("madvrwin_get_ramdac failed on malloc()\n");
		return NULL;
	}
	r->pdepth = p->pdepth;
	r->nent = (1 << p->pdepth);
	r->clone =  dispwin_clone_ramdac;
	r->setlin = dispwin_setlin_ramdac;
	r->del =    dispwin_del_ramdac;

	for (j = 0; j < 3; j++) {

		if ((r->v[j] = (double *)calloc(sizeof(double), r->nent)) == NULL) {
			for (j--; j >= 0; j--)
				free(r->v[j]);
			free(r);
			debugr("madvrwin_get_ramdac failed on malloc()\n");
			return NULL;
		}
	}

	/* GetDeviceGammaRamp() is hard coded for 3 x 256 entries (Quantize) */
	if (r->nent != 256) {
		free(r);
		debugr2((errout,"GetDeviceGammaRamp() is hard coded for nent == 256, and we've got nent = %d!\n",r->nent));
		return NULL;
	}

	if (!madVR_GetDeviceGammaRamp(vals)) {
		free(r);
		debugr2((errout,"madvrwin_get_ramdac failed on madVR_GetDeviceGammaRamp()\n"));
		return NULL;
	}

	for (j = 0; j < 3; j++) {
		for (i = 0; i < r->nent; i++) {
			r->v[j][i] = vals[j][i]/65535.0;
		}
	}
#endif // ENABLE_RAMDAC
	debugr2((errout,"madvrwin_get_ramdac returning 0x%x\n",r));

	return r;
}

/* Set the RAMDAC values. */
/* Return nz if not possible */
static int madvrwin_set_ramdac(dispwin *p, ramdac *r, int persist) {
	int rv = 1;

#ifdef ENABLE_RAMDAC
	int i, j;
	WORD vals[3][256];		/* 16 bit elements */

	debugr("madvrwin_set_ramdac called\n");

	for (j = 0; j < 3; j++) {
		for (i = 0; i < r->nent; i++) {
			double vv = r->v[j][i];
			if (vv < 0.0)
				vv = 0.0;
			else if (vv > 1.0)
				vv = 1.0;
			vals[j][i] = (int)(65535.0 * vv + 0.5);
		}
	}

	if (!madVR_SetDeviceGammaRamp(vals)) {
		debugr2((errout,"madvrwin_set_ramdac failed on madVR_SetDeviceGammaRamp()\n"));
		rv = 1;
	} else {
		debugr("madvrwin_set_ramdac set\n");
		rv = 0;
	}
#endif // ENABLE_RAMDAC
	return rv;
}

/* ----------------------------------------------- */
/* Install a display profile and make */
/* it the default for this display. */
/* Return nz if failed */
int madvrwin_install_profile(dispwin *p, char *fname, ramdac *r, p_scope scope) {
	debugr("madVRdisp doesn't support installing profiles\n"); 
	return 1;
}

/* Un-Install a display profile */
/* Return nz if failed, */
int madvrwin_uninstall_profile(dispwin *p, char *fname, p_scope scope) {
	debugr("madVRdisp doesn't support uninstalling profiles\n"); 
	return 1;
}

/* Get the currently installed display profile. */
/* Return NULL if failed. */
icmFile *madvrwin_get_profile(dispwin *p, char *name, int mxlen) {
	debugr("madVRdisp doesn't support getting the current profile\n"); 
	return NULL;
}

/* ----------------------------------------------- */

/* Change the window color. */
/* Return 1 on error, 2 on window being closed */
static int madvrwin_set_color(
dispwin *p,
double r, double g, double b	/* Color values 0.0 - 1.0 */
) {
	int j;
	double orgb[3];		/* Previous RGB value */
	double kr, kf;
	int update_delay = 0;

	debugr("madvrwin_set_color called\n");

	if (p->nowin)
		return 1;

	orgb[0] = p->rgb[0]; p->rgb[0] = r;
	orgb[1] = p->rgb[1]; p->rgb[1] = g;
	orgb[2] = p->rgb[2]; p->rgb[2] = b;

	if (!madVR_ShowRGB(p->rgb[0], p->rgb[1], p->rgb[2])) {
		debugr2((errout,"madVR_ShowRGB failed\n"));
		return 1;
	}

	/* Allow for display update & instrument delays */
	update_delay = dispwin_compute_delay(p, orgb);
	debugr2((errout, "madvrwin_set_color delaying %d msec\n",update_delay));
	msec_sleep(update_delay);

	return 0;
}

/* Set/unset the full screen black flag */
/* Return nz on error */
static int madvrwin_set_fc(dispwin *p, int fullscreen) {
	int perc, bgperc, bgmode, border;

	p->fullscreen = fullscreen;

	/* Parameters that shouldn't change can be set to -1, but this doesn't seem */
	/* to work for background level, so get current background level */
	if (!madVR_GetPatternConfig(&perc, &bgperc, &bgmode, &border)) {
		debugr2((errout,"madVR_GetPatternConfig failed\n"));
		return 1;
	}
	debugr2((errout,"madvrwin_set_fc: got pattern config %i, %i, %i, %i\n",
	                 perc, bgperc, bgmode, border));

	/* Default test window is 10% of the width/height = 1% of the area*/
	perc = (int)((p->width/100.0 * 0.1 * p->height/100.0 * 0.1) * 100.0 + 0.5);

	/* Background level is 1..100 in percent */
	debugr2((errout,"madvrwin_set_fc: setting pattern config %i, %i\n",
	                                       perc, fullscreen ? 0 : bgperc));
	if (!madVR_SetPatternConfig(perc, fullscreen ? 0 : bgperc, -1, -1)) {
		debugr2((errout,"madVR_SetPatternConfig failed\n"));
		return 1;
	}

	return 0;
}

/* ----------------------------------------------- */
/* set patch info */
/* Return nz on error */
static int madvrwin_set_pinfo(dispwin *p, int pno, int tno) {

	if (!madVR_SetProgressBarPos(pno, tno))
		return 1;

	return 0;
}

/* ----------------------------------------------- */
/* Set the shell set color callout */
void madvrwin_set_callout(
dispwin *p,
char *callout
) {
	debugr2((errout,"madvrwin_set_callout called with '%s'\n",callout));

	p->callout = strdup(callout);
}

/* ----------------------------------------------- */
/* Destroy ourselves */
static void madvrwin_del(
dispwin *p
) {

	debugr("madvrwin_del called\n");

	if (p == NULL)
		return;

	deinitMadVR(p);

	if (p->name != NULL)
		free(p->name);
	if (p->description != NULL)
		free(p->description);
	if (p->callout != NULL)
		free(p->callout);

	/* Since we don't restore the display, delete these here */
	if (p->oor != NULL) {
		p->oor->del(p->oor);
		p->oor = NULL;
	}
	if (p->or != NULL) {
		p->or->del(p->or);
		p->or = NULL;
	}
	if (p->r != NULL) {
		p->r->del(p->r);
		p->r = NULL;
	}

	free(p);
}

/* ----------------------------------------------- */

/* Create a web display test window, default grey */
dispwin *new_madvrwin(
double width, double height,	/* Width and height in mm - turned into % of screen */
double hoff, double voff,		/* Offset from center in fraction of screen - ignored */
int nowin,						/* NZ if no window should be created - RAMDAC access only */
int native,						/* X0 = use current per channel calibration curve */
								/* X1 = set native linear output and use ramdac high precn. */
								/* 0X = use current color management cLut (MadVR) */
								/* 1X = disable color management cLUT (MadVR) */
int *noramdac,					/* Return nz if no ramdac access. native is set to X0 */
int *nocm,						/* Return nz if no CM cLUT access. native is set to 0X */
int out_tvenc,					/* 1 = use RGB Video Level encoding */
int fullscreen,					/* NZ if whole screen should be filled with black */
int verb,						/* NZ for verbose prompts */
int ddebug						/* >0 to print debug statements to stderr */
) {
	dispwin *p = NULL;
	char *cp;
	const char *options[3];
	char port[50];

	debug("new_madvrwin called with native = %d\n");

	if (out_tvenc) {
		if (ddebug) fprintf(stderr,"new_madvrwin failed because out_tvenc set\n");
		return NULL;
	}

	if ((p = (dispwin *)calloc(sizeof(dispwin), 1)) == NULL) {
		if (ddebug) fprintf(stderr,"new_madvrwin failed because malloc failed\n");
		return NULL;
	}

	/* !!!! Make changes in dispwin.c & webwin.c as well !!!! */
	p->name = strdup("Web Window");
	p->width = width;
	p->height = height;
	p->nowin = nowin;
	p->native = native;
	p->out_tvenc = 0;
	p->fullscreen = fullscreen;
	p->ddebug = ddebug;
	p->get_ramdac          = madvrwin_get_ramdac;
	p->set_ramdac          = madvrwin_set_ramdac;
	p->install_profile     = madvrwin_install_profile;
	p->uninstall_profile   = madvrwin_uninstall_profile;
	p->get_profile         = madvrwin_get_profile;
	p->set_color           = madvrwin_set_color;
	p->set_fc              = madvrwin_set_fc;
	p->set_pinfo           = madvrwin_set_pinfo;
	p->set_update_delay    = dispwin_set_update_delay;
	p->set_settling_delay  = dispwin_set_settling_delay;
	p->enable_update_delay = dispwin_enable_update_delay;
	p->set_callout         = madvrwin_set_callout;
	p->del                 = madvrwin_del;

	debugr2((errout, "new_madvrwin got native = %d\n",native));

#ifndef ENABLE_RAMDAC
	if (noramdac != NULL)
		*noramdac = 1;
	p->native &= ~1;
#endif

	p->rgb[0] = p->rgb[1] = p->rgb[2] = 0.5;	/* Set Grey as the initial test color */

	dispwin_set_default_delays(p);

	p->pdepth = 8;		/* Assume this */
	p->edepth = 16;

	if (initMadVR(p)) {
		debugr2((errout,"Failed to locate MadVR .dll or functions\n"));
		free(p);
		return NULL;
	}

	if (!madVR_BlindConnect(0, 1000)) {
		debugr2((errout,"Failed to connect to MadVR\n"));
		free(p);
		return NULL;
	}

	if (p->native & 2) {
		debugr2((errout,"new_madvrwin: disbling 3dLuts\n"));
		madVR_Disable3dlut();
	}

	p->set_fc(p, fullscreen);

	/* Create a suitable description */
	{
		char buf[1000];

		sprintf(buf,"ArgyllCMS Patches");
		p->description = strdup(buf);

		if (verb)
			printf("Created MadVR window\n");

		madVR_SetOsdText(L"ArgyllCMS Patches");
	}

#ifdef ENABLE_RAMDAC

	/* Save the original ramdac, which gets restored on exit */
	if ((p->or = p->get_ramdac(p)) != NULL) {

		debugr("Saved original VideoLUT\n");

		if (noramdac != NULL)
			*noramdac = 0;

		/* Copy original ramdac that never gets altered */
		if ((p->oor = p->or->clone(p->or)) == NULL) {
			madvrwin_del(p);
			debugr("ramdac clone failed - memory ?\n");
			return NULL;
		}

		/* Create a working ramdac for native or other use */
		if ((p->r = p->or->clone(p->or)) == NULL) {
			madvrwin_del(p);
			debugr("ramdac clone failed - memory ?\n");
			return NULL;
		}

		/* Setup for native mode == linear RAMDAC */
		if ((p->native & 1) == 1) {
int ii = 0;
			debug("About to setup native mode\n");

			/* Since we MadVR does dithering, we don't need to use the VideoLUTs */
			/* to emulate higher precision, so simply set it to linear here. */
			if ((ii = madVR_SetDeviceGammaRamp(NULL)) == 0) {
				madvrwin_del(p);
				debugr("Clear gamma ramp failed\n");
				return NULL;
			}
		}

	} else {
		debugr2((errout,"Unable to access VideoLUT\n"));
		if (noramdac != NULL)
			*noramdac = 1;
		p->oor = p->or = p->r = NULL;
	}

	if (!p->nowin) {

		/* Make sure initial test color is displayed */
		madvrwin_set_color(p, p->rgb[0], p->rgb[1], p->rgb[2]);
	}
#endif

	debugr("new_madvrwin: return sucessfully\n");

	return p;
}