1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "debug.h"

     4

#include "strings.h"

     5

#include "table/strings.h"

     6

#include "gfx.h"

     7

#include "viewport.h"

     8

#include "player.h"

     9

#include "gui.h"

    10

#include "screenshot.h"

    11

    12

// called by the ScreenShot proc to generate screenshot lines.

    13

typedef void ScreenshotCallback(void *userdata, byte *buf, uint y, uint pitch, uint n);

    14

typedef bool ScreenshotHandlerProc(const char *name, ScreenshotCallback *callb, void *userdata, uint w, uint h, int pixelformat, const byte *palette);

    15

    16

typedef struct {

    17

	const char *name;

    18

	const char *extension;

    19

	ScreenshotHandlerProc *proc;

    20

} ScreenshotFormat;

    21

    22

//************************************************

    23

//*** SCREENSHOT CODE FOR WINDOWS BITMAP (.BMP)

    24

//************************************************

    25

#if defined(_MSC_VER) || defined(__WATCOMC__)

    26

#pragma pack(push, 1)

    27

#endif

    28

    29

typedef struct BitmapFileHeader {

    30

	uint16 type;

    31

	uint32 size;

    32

	uint32 reserved;

    33

	uint32 off_bits;

    34

} GCC_PACK BitmapFileHeader;

    35

assert_compile(sizeof(BitmapFileHeader) == 14);

    36

    37

#if defined(_MSC_VER) || defined(__WATCOMC__)

    38

#pragma pack(pop)

    39

#endif

    40

    41

typedef struct BitmapInfoHeader {

    42

	uint32 size;

    43

	int32 width, height;

    44

	uint16 planes, bitcount;

    45

	uint32 compression, sizeimage, xpels, ypels, clrused, clrimp;

    46

} BitmapInfoHeader;

    47

assert_compile(sizeof(BitmapInfoHeader) == 40);

    48

    49

typedef struct RgbQuad {

    50

	byte blue, green, red, reserved;

    51

} RgbQuad;

    52

assert_compile(sizeof(RgbQuad) == 4);

    53

    54

// generic .BMP writer

    55

static bool MakeBmpImage(const char *name, ScreenshotCallback *callb, void *userdata, uint w, uint h, int pixelformat, const byte *palette)

    56

{

    57

	BitmapFileHeader bfh;

    58

	BitmapInfoHeader bih;

    59

	RgbQuad rq[256];

    60

	byte *buff;

    61

	FILE *f;

    62

	uint i, padw;

    63

	uint n, maxlines;

    64

    65

	// only implemented for 8bit images so far.

    66

	if (pixelformat != 8)

    67

		return false;

    68

    69

	f = fopen(name, "wb");

    70

	if (f == NULL) return false;

    71

    72

	// each scanline must be aligned on a 32bit boundary

    73

	padw = (w + 3) & ~3;

    74

    75

	// setup the file header

    76

	bfh.type = TO_LE16('MB');

    77

	bfh.size = TO_LE32(sizeof(bfh) + sizeof(bih) + sizeof(RgbQuad) * 256 + padw * h);

    78

	bfh.reserved = 0;

    79

	bfh.off_bits = TO_LE32(sizeof(bfh) + sizeof(bih) + sizeof(RgbQuad) * 256);

    80

    81

	// setup the info header

    82

	bih.size = TO_LE32(sizeof(BitmapInfoHeader));

    83

	bih.width = TO_LE32(w);

    84

	bih.height = TO_LE32(h);

    85

	bih.planes = TO_LE16(1);

    86

	bih.bitcount = TO_LE16(8);

    87

	bih.compression = 0;

    88

	bih.sizeimage = 0;

    89

	bih.xpels = 0;

    90

	bih.ypels = 0;

    91

	bih.clrused = 0;

    92

	bih.clrimp = 0;

    93

    94

	// convert the palette to the windows format

    95

	for (i = 0; i != 256; i++) {

    96

		rq[i].red = *palette++;

    97

		rq[i].green = *palette++;

    98

		rq[i].blue = *palette++;

    99

		rq[i].reserved = 0;

   100

	}

   101

   102

	// write file header and info header and palette

   103

	if (fwrite(&bfh, sizeof(bfh), 1, f) != 1) return false;

   104

	if (fwrite(&bih, sizeof(bih), 1, f) != 1) return false;

   105

	if (fwrite(rq, sizeof(rq), 1, f) != 1) return false;

   106

   107

	// use by default 64k temp memory

   108

	maxlines = clamp(65536 / padw, 16, 128);

   109

   110

	// now generate the bitmap bits

   111

	buff = malloc(padw * maxlines); // by default generate 128 lines at a time.

   112

	if (buff == NULL) {

   113

		fclose(f);

   114

		return false;

   115

	}

   116

	memset(buff, 0, padw * maxlines); // zero the buffer to have the padding bytes set to 0

   117

   118

	// start at the bottom, since bitmaps are stored bottom up.

   119

	do {

   120

		// determine # lines

   121

		n = min(h, maxlines);

   122

		h -= n;

   123

   124

		// render the pixels

   125

		callb(userdata, buff, h, padw, n);

   126

   127

		// write each line

   128

		while (n)

   129

			if (fwrite(buff + (--n) * padw, padw, 1, f) != 1) {

   130

				free(buff);

   131

				fclose(f);

   132

				return false;

   133

			}

   134

	} while (h != 0);

   135

   136

	free(buff);

   137

	fclose(f);

   138

   139

	return true;

   140

}

   141

   142

//********************************************************

   143

//*** SCREENSHOT CODE FOR PORTABLE NETWORK GRAPHICS (.PNG)

   144

//********************************************************

   145

#if defined(WITH_PNG)

   146

#include <png.h>

   147

   148

static void PNGAPI png_my_error(png_structp png_ptr, png_const_charp message)

   149

{

   150

	DEBUG(misc, 0) ("ERROR(libpng): %s - %s\n", message, (char *)png_get_error_ptr(png_ptr));

   151

	longjmp(png_ptr->jmpbuf, 1);

   152

}

   153

   154

static void PNGAPI png_my_warning(png_structp png_ptr, png_const_charp message)

   155

{

   156

	DEBUG(misc, 0) ("WARNING(libpng): %s - %s\n", message, (char *)png_get_error_ptr(png_ptr));

   157

}

   158

   159

static bool MakePNGImage(const char *name, ScreenshotCallback *callb, void *userdata, uint w, uint h, int pixelformat, const byte *palette)

   160

{

   161

	png_color rq[256];

   162

	byte *buff;

   163

	FILE *f;

   164

	uint i, y, n;

   165

	uint maxlines;

   166

	png_structp png_ptr;

   167

	png_infop info_ptr;

   168

   169

	// only implemented for 8bit images so far.

   170

	if (pixelformat != 8)

   171

		return false;

   172

   173

	f = fopen(name, "wb");

   174

	if (f == NULL) return false;

   175

   176

	png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, (char *)name, png_my_error, png_my_warning);

   177

   178

	if (png_ptr == NULL) {

   179

		fclose(f);

   180

		return false;

   181

	}

   182

   183

	info_ptr = png_create_info_struct(png_ptr);

   184

	if (info_ptr == NULL) {

   185

		png_destroy_write_struct(&png_ptr, (png_infopp)NULL);

   186

		fclose(f);

   187

		return false;

   188

	}

   189

   190

	if (setjmp(png_jmpbuf(png_ptr))) {

   191

		png_destroy_write_struct(&png_ptr, &info_ptr);

   192

		fclose(f);

   193

		return false;

   194

	}

   195

   196

	png_init_io(png_ptr, f);

   197

   198

	png_set_filter(png_ptr, 0, PNG_FILTER_NONE);

   199

   200

	png_set_IHDR(png_ptr, info_ptr, w, h, pixelformat, PNG_COLOR_TYPE_PALETTE,

   201

		PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);

   202

   203

	// convert the palette to the .PNG format.

   204

	{

   205

    // avoids "might be clobbered" warning of argument "palette"

   206

		const byte *pal = palette;

   207

   208

		for (i = 0; i != 256; i++) {

   209

			rq[i].red = *pal++;

   210

			rq[i].green = *pal++;

   211

			rq[i].blue = *pal++;

   212

		}

   213

	}

   214

   215

	png_set_PLTE(png_ptr, info_ptr, rq, 256);

   216

	png_write_info(png_ptr, info_ptr);

   217

	png_set_flush(png_ptr, 512);

   218

   219

	// use by default 64k temp memory

   220

	maxlines = clamp(65536 / w, 16, 128);

   221

   222

	// now generate the bitmap bits

   223

	buff = malloc(w * maxlines); // by default generate 128 lines at a time.

   224

	if (buff == NULL) {

   225

		png_destroy_write_struct(&png_ptr, &info_ptr);

   226

		fclose(f);

   227

		return false;

   228

	}

   229

	memset(buff, 0, w * maxlines); // zero the buffer to have the padding bytes set to 0

   230

   231

	y = 0;

   232

	do {

   233

		// determine # lines to write

   234

		n = min(h - y, maxlines);

   235

   236

		// render the pixels into the buffer

   237

		callb(userdata, buff, y, w, n);

   238

		y += n;

   239

   240

		// write them to png

   241

		for (i = 0; i != n; i++)

   242

			png_write_row(png_ptr, buff + i * w);

   243

	} while (y != h);

   244

   245

	png_write_end(png_ptr, info_ptr);

   246

	png_destroy_write_struct(&png_ptr, &info_ptr);

   247

   248

	free(buff);

   249

	fclose(f);

   250

	return true;

   251

}

   252

#endif // WITH_PNG

   253

   254

   255

//************************************************

   256

//*** SCREENSHOT CODE FOR ZSOFT PAINTBRUSH (.PCX)

   257

//************************************************

   258

   259

typedef struct {

   260

	byte manufacturer;

   261

	byte version;

   262

	byte rle;

   263

	byte bpp;

   264

	uint32 unused;

   265

	uint16 xmax, ymax;

   266

	uint16 hdpi, vdpi;

   267

	byte pal_small[16*3];

   268

	byte reserved;

   269

	byte planes;

   270

	uint16 pitch;

   271

	uint16 cpal;

   272

	uint16 width;

   273

	uint16 height;

   274

	byte filler[54];

   275

} PcxHeader;

   276

assert_compile(sizeof(PcxHeader) == 128);

   277

   278

static bool MakePCXImage(const char *name, ScreenshotCallback *callb, void *userdata, uint w, uint h, int pixelformat, const byte *palette)

   279

{

   280

	byte *buff;

   281

	FILE *f;

   282

	uint maxlines;

   283

	uint y;

   284

	PcxHeader pcx;

   285

   286

	if (pixelformat != 8 || w == 0)

   287

		return false;

   288

   289

	f = fopen(name, "wb");

   290

	if (f == NULL) return false;

   291

   292

	memset(&pcx, 0, sizeof(pcx));

   293

   294

	// setup pcx header

   295

	pcx.manufacturer = 10;

   296

	pcx.version = 5;

   297

	pcx.rle = 1;

   298

	pcx.bpp = 8;

   299

	pcx.xmax = TO_LE16(w - 1);

   300

	pcx.ymax = TO_LE16(h - 1);

   301

	pcx.hdpi = TO_LE16(320);

   302

	pcx.vdpi = TO_LE16(320);

   303

   304

	pcx.planes = 1;

   305

	pcx.cpal = TO_LE16(1);

   306

	pcx.width = pcx.pitch = TO_LE16(w);

   307

	pcx.height = TO_LE16(h);

   308

   309

	// write pcx header

   310

	if (fwrite(&pcx, sizeof(pcx), 1, f) != 1) {

   311

		fclose(f);

   312

		return false;

   313

	}

   314

   315

	// use by default 64k temp memory

   316

	maxlines = clamp(65536 / w, 16, 128);

   317

   318

	// now generate the bitmap bits

   319

	buff = malloc(w * maxlines); // by default generate 128 lines at a time.

   320

	if (buff == NULL) {

   321

		fclose(f);

   322

		return false;

   323

	}

   324

	memset(buff, 0, w * maxlines); // zero the buffer to have the padding bytes set to 0

   325

   326

	y = 0;

   327

	do {

   328

		// determine # lines to write

   329

		uint n = min(h - y, maxlines);

   330

		uint i;

   331

   332

		// render the pixels into the buffer

   333

		callb(userdata, buff, y, w, n);

   334

		y += n;

   335

   336

		// write them to pcx

   337

		for (i = 0; i != n; i++) {

   338

			int runcount = 1;

   339

			byte *bufp = buff + i * w;

   340

			byte runchar = buff[0];

   341

			uint left;

   342

   343

			// for each pixel...

   344

			for (left = w - 1; left > 0; --left) {

   345

				byte ch = *bufp++;

   346

				if (ch != runchar || runcount >= 0x3f) {

   347

					if (runcount > 1 || (runchar & 0xC0) == 0xC0)

   348

						if (fputc(0xC0 | runcount, f) == EOF) {

   349

							free(buff);

   350

							fclose(f);

   351

							return false;

   352

						}

   353

					if (fputc(runchar, f) == EOF) {

   354

						free(buff);

   355

						fclose(f);

   356

						return false;

   357

					}

   358

					runcount = 0;

   359

					runchar = ch;

   360

				}

   361

				runcount++;

   362

			}

   363

   364

			// write remaining bytes..

   365

			if (runcount > 1 || (runchar & 0xC0) == 0xC0)

   366

				if (fputc(0xC0 | runcount, f) == EOF) {

   367

					free(buff);

   368

					fclose(f);

   369

					return false;

   370

				}

   371

			if (fputc(runchar, f) == EOF) {

   372

				free(buff);

   373

				fclose(f);

   374

				return false;

   375

			}

   376

		}

   377

	} while (y != h);

   378

   379

	free(buff);

   380

   381

	// write 8-bit color palette

   382

	if (fputc(12, f) == EOF) {

   383

		fclose(f);

   384

		return false;

   385

	}

   386

	if (fwrite(palette, 256 * 3, 1, f) != 1) {

   387

		fclose(f);

   388

		return false;

   389

	}

   390

	fclose(f);

   391

   392

	return true;

   393

}

   394

   395

//************************************************

   396

//*** GENERIC SCREENSHOT CODE

   397

//************************************************

   398

   399

static const ScreenshotFormat _screenshot_formats[] = {

   400

	{"BMP", "bmp", &MakeBmpImage},

   401

#if defined(WITH_PNG)

   402

	{"PNG", "png", &MakePNGImage},

   403

#endif

   404

	{"PCX", "pcx", &MakePCXImage},

   405

};

   406

   407

void InitializeScreenshotFormats(void)

   408

{

   409

	int i, j;

   410

	for (i = 0, j = 0; i != lengthof(_screenshot_formats); i++)

   411

		if (!strcmp(_screenshot_format_name, _screenshot_formats[i].extension)) {

   412

			j = i;

   413

			break;

   414

		}

   415

	_cur_screenshot_format = j;

   416

	_num_screenshot_formats = lengthof(_screenshot_formats);

   417

}

   418

   419

const char *GetScreenshotFormatDesc(int i)

   420

{

   421

	return _screenshot_formats[i].name;

   422

}

   423

   424

void SetScreenshotFormat(int i)

   425

{

   426

	_cur_screenshot_format = i;

   427

	strcpy(_screenshot_format_name, _screenshot_formats[i].extension);

   428

}

   429

   430

// screenshot generator that dumps the current video buffer

   431

static void CurrentScreenCallback(void *userdata, byte *buf, uint y, uint pitch, uint n)

   432

{

   433

	for (; n > 0; --n) {

   434

		memcpy(buf, _screen.dst_ptr + y * _screen.pitch, _screen.width);

   435

		++y;

   436

		buf += pitch;

   437

	}

   438

}

   439

   440

// generate a large piece of the world

   441

static void LargeWorldCallback(void *userdata, byte *buf, uint y, uint pitch, uint n)

   442

{

   443

	ViewPort *vp = (ViewPort *)userdata;

   444

	DrawPixelInfo dpi, *old_dpi;

   445

	int wx, left;

   446

   447

	old_dpi = _cur_dpi;

   448

	_cur_dpi = &dpi;

   449

   450

	dpi.dst_ptr = buf;

   451

	dpi.height = n;

   452

	dpi.width = vp->width;

   453

	dpi.pitch = pitch;

   454

	dpi.zoom = 0;

   455

	dpi.left = 0;

   456

	dpi.top = y;

   457

   458

	left = 0;

   459

	while (vp->width - left != 0) {

   460

		wx = min(vp->width - left, 1600);

   461

		left += wx;

   462

   463

		ViewportDoDraw(vp,

   464

			((left - wx - vp->left) << vp->zoom) + vp->virtual_left,

   465

			((y - vp->top) << vp->zoom) + vp->virtual_top,

   466

			((left - vp->left) << vp->zoom) + vp->virtual_left,

   467

			(((y + n) - vp->top) << vp->zoom) + vp->virtual_top

   468

		);

   469

	}

   470

   471

	_cur_dpi = old_dpi;

   472

}

   473

   474

static char *MakeScreenshotName(const char *ext)

   475

{

   476

	static char filename[256];

   477

	char *base;

   478

	int serial;

   479

   480

	if (_game_mode == GM_EDITOR || _local_player == OWNER_SPECTATOR) {

   481

		sprintf(_screenshot_name, "screenshot");

   482

	} else {

   483

		Player *p = &_players[_local_player];

   484

		SetDParam(0, p->name_1);

   485

		SetDParam(1, p->name_2);

   486

		SetDParam(2, _date);

   487

		GetString(_screenshot_name, STR_4004);

   488

	}

   489

   490

	base = strchr(_screenshot_name, 0);

   491

	base[0] = '.'; strcpy(base + 1, ext);

   492

   493

	serial = 0;

   494

	for (;;) {

   495

		snprintf(filename, sizeof(filename), "%s%s", _path.personal_dir, _screenshot_name);

   496

		if (!FileExists(filename))

   497

			break;

   498

		sprintf(base, " #%d.%s", ++serial, ext);

   499

	}

   500

   501

	return filename;

   502

}

   503

   504

bool MakeScreenshot(void)

   505

{

   506

	const ScreenshotFormat *sf = _screenshot_formats + _cur_screenshot_format;

   507

	return sf->proc(MakeScreenshotName(sf->extension), CurrentScreenCallback, NULL, _screen.width, _screen.height, 8, _cur_palette);

   508

}

   509

   510

bool MakeWorldScreenshot(int left, int top, int width, int height, int zoom)

   511

{

   512

	ViewPort vp;

   513

	const ScreenshotFormat *sf;

   514