1

#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "table/strings.h"

     4

#include "gfx.h"

     5

#include "viewport.h"

     6

#include "player.h"

     7

#include "gui.h"

     8

#include "screenshot.h"

     9

    10

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

    11

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

    12

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

    13

    14

typedef struct {

    15

	const char *name;

    16

	const char *extension;

    17

	ScreenshotHandlerProc *proc;

    18

} ScreenshotFormat;

    19

    20

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

    21

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

    22

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

    23

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

    24

#pragma pack(push, 1)

    25

#endif

    26

    27

typedef struct BitmapFileHeader {

    28

	uint16 type;

    29

	uint32 size;

    30

	uint32 reserved;

    31

	uint32 off_bits;

    32

} GCC_PACK BitmapFileHeader;

    33

assert_compile(sizeof(BitmapFileHeader) == 14);

    34

    35

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

    36

#pragma pack(pop)

    37

#endif

    38

    39

typedef struct BitmapInfoHeader {

    40

	uint32 size;

    41

	int32 width, height;

    42

	uint16 planes, bitcount;

    43

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

    44

} BitmapInfoHeader;

    45

assert_compile(sizeof(BitmapInfoHeader) == 40);

    46

    47

typedef struct RgbQuad {

    48

	byte blue, green, red, reserved;

    49

} RgbQuad;

    50

assert_compile(sizeof(RgbQuad) == 4);

    51

    52

// generic .BMP writer

    53

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

    54

{

    55

	BitmapFileHeader bfh;

    56

	BitmapInfoHeader bih;

    57

	RgbQuad rq[256];

    58

	byte *buff;

    59

	FILE *f;

    60

	uint i, padw;

    61

	uint n, maxlines;

    62

    63

	// only implemented for 8bit images so far.

    64

	if (pixelformat != 8)

    65

		return false;

    66

    67

	f = fopen(name, "wb");

    68

	if (f == NULL) return false;

    69

    70

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

    71

	padw = (w + 3) & ~3;

    72

    73

	// setup the file header

    74

	bfh.type = TO_LE16('MB');

    75

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

    76

	bfh.reserved = 0;

    77

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

    78

    79

	// setup the info header

    80

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

    81

	bih.width = TO_LE32(w);

    82

	bih.height = TO_LE32(h);

    83

	bih.planes = TO_LE16(1);

    84

	bih.bitcount = TO_LE16(8);

    85

	bih.compression = 0;

    86

	bih.sizeimage = 0;

    87

	bih.xpels = 0;

    88

	bih.ypels = 0;

    89

	bih.clrused = 0;

    90

	bih.clrimp = 0;

    91

    92

	// convert the palette to the windows format

    93

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

    94

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

    95

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

    96

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

    97

		rq[i].reserved = 0;

    98

	}

    99

   100

	// write file header and info header and palette

   101

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

   102

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

   103

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

   104

   105

	// use by default 64k temp memory

   106

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

   107

   108

	// now generate the bitmap bits

   109

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

   110

	if (buff == NULL) {

   111

		fclose(f);

   112

		return false;

   113

	}

   114

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

   115

   116

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

   117

	do {

   118

		// determine # lines

   119

		n = min(h, maxlines);

   120

		h -= n;

   121

   122

		// render the pixels

   123

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

   124

   125

		// write each line

   126

		while (n)

   127

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

   128

				free(buff);

   129

				fclose(f);

   130

				return false;

   131

			}

   132

	} while (h != 0);

   133

   134

	free(buff);

   135

	fclose(f);

   136

   137

	return true;

   138

}

   139

   140

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

   141

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

   142

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

   143

#if defined(WITH_PNG)

   144

#include <png.h>

   145

   146

static void PNGAPI png_my_error(png_structp png_ptr, png_const_charp message)

   147

{

   148

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

   149

	longjmp(png_ptr->jmpbuf, 1);

   150

}

   151

   152

static void PNGAPI png_my_warning(png_structp png_ptr, png_const_charp message)

   153

{

   154

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

   155

}

   156

   157

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

   158

{

   159

	png_color rq[256];

   160

	byte *buff;

   161

	FILE *f;

   162

	uint i, y, n;

   163

	uint maxlines;

   164

	png_structp png_ptr;

   165

	png_infop info_ptr;

   166

   167

	// only implemented for 8bit images so far.

   168

	if (pixelformat != 8)

   169

		return false;

   170

   171

	f = fopen(name, "wb");

   172

	if (f == NULL) return false;

   173

   174

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

   175

   176

	if (png_ptr == NULL) {

   177

		fclose(f);

   178

		return false;

   179

	}

   180

   181

	info_ptr = png_create_info_struct(png_ptr);

   182

	if (info_ptr == NULL) {

   183

		png_destroy_write_struct(&png_ptr, (png_infopp)NULL);

   184

		fclose(f);

   185

		return false;

   186

	}

   187

   188

	if (setjmp(png_jmpbuf(png_ptr))) {

   189

		png_destroy_write_struct(&png_ptr, &info_ptr);

   190

		fclose(f);

   191

		return false;

   192

	}

   193

   194

	png_init_io(png_ptr, f);

   195

   196

	png_set_filter(png_ptr, 0, PNG_FILTER_NONE);

   197

   198

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

   199

		PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);

   200

   201

	// convert the palette to the .PNG format.

   202

	{

   203

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

   204

		const byte *pal = palette;

   205

   206

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

   207

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

   208

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

   209

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

   210

		}

   211

	}

   212

   213

	png_set_PLTE(png_ptr, info_ptr, rq, 256);

   214

	png_write_info(png_ptr, info_ptr);

   215

	png_set_flush(png_ptr, 512);

   216

   217

	// use by default 64k temp memory

   218

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

   219

   220

	// now generate the bitmap bits

   221

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

   222

	if (buff == NULL) {

   223

		png_destroy_write_struct(&png_ptr, &info_ptr);

   224

		fclose(f);

   225

		return false;

   226

	}

   227

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

   228

   229

	y = 0;

   230

	do {

   231

		// determine # lines to write

   232

		n = min(h - y, maxlines);

   233

   234

		// render the pixels into the buffer

   235

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

   236

		y += n;

   237

   238

		// write them to png

   239

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

   240

			png_write_row(png_ptr, buff + i * w);

   241

	} while (y != h);

   242

   243

	png_write_end(png_ptr, info_ptr);

   244

	png_destroy_write_struct(&png_ptr, &info_ptr);

   245

   246

	free(buff);

   247

	fclose(f);

   248

	return true;

   249

}

   250

#endif // WITH_PNG

   251

   252

   253

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

   254

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

   255

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

   256

   257

typedef struct {

   258

	byte manufacturer;

   259

	byte version;

   260

	byte rle;

   261

	byte bpp;

   262

	uint32 unused;

   263

	uint16 xmax, ymax;

   264

	uint16 hdpi, vdpi;

   265

	byte pal_small[16*3];

   266

	byte reserved;

   267

	byte planes;

   268

	uint16 pitch;

   269

	uint16 cpal;

   270

	uint16 width;

   271

	uint16 height;

   272

	byte filler[54];

   273

} PcxHeader;

   274

assert_compile(sizeof(PcxHeader) == 128);

   275

   276

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

   277

{

   278

	byte *buff;

   279

	FILE *f;

   280

	uint maxlines;

   281

	uint y;

   282

	PcxHeader pcx;

   283

   284

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

   285

		return false;

   286

   287

	f = fopen(name, "wb");

   288

	if (f == NULL) return false;

   289

   290

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

   291

   292

	// setup pcx header

   293

	pcx.manufacturer = 10;

   294

	pcx.version = 5;

   295

	pcx.rle = 1;

   296

	pcx.bpp = 8;

   297

	pcx.xmax = TO_LE16(w - 1);

   298

	pcx.ymax = TO_LE16(h - 1);

   299

	pcx.hdpi = TO_LE16(320);

   300

	pcx.vdpi = TO_LE16(320);

   301

   302

	pcx.planes = 1;

   303

	pcx.cpal = TO_LE16(1);

   304

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

   305

	pcx.height = TO_LE16(h);

   306

   307

	// write pcx header

   308

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

   309

		fclose(f);

   310

		return false;

   311

	}

   312

   313

	// use by default 64k temp memory

   314

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

   315

   316

	// now generate the bitmap bits

   317

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

   318

	if (buff == NULL) {

   319

		fclose(f);

   320

		return false;

   321

	}

   322

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

   323

   324

	y = 0;

   325

	do {

   326

		// determine # lines to write

   327

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

   328

		uint i;

   329

   330

		// render the pixels into the buffer

   331

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

   332

		y += n;

   333

   334

		// write them to pcx

   335

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

   336

			int runcount = 1;

   337

			byte *bufp = buff + i * w;

   338

			byte runchar = buff[0];

   339

			uint left;

   340

   341

			// for each pixel...

   342

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

   343

				byte ch = *bufp++;

   344

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

   345

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

   346

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

   347

							free(buff);

   348

							fclose(f);

   349

							return false;

   350

						}

   351

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

   352

						free(buff);

   353

						fclose(f);

   354

						return false;

   355

					}

   356

					runcount = 0;

   357

					runchar = ch;

   358

				}

   359

				runcount++;

   360

			}

   361

   362

			// write remaining bytes..

   363

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

   364

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

   365

					free(buff);

   366

					fclose(f);

   367

					return false;

   368

				}

   369

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

   370

				free(buff);

   371

				fclose(f);

   372

				return false;

   373

			}

   374

		}

   375

	} while (y != h);

   376

   377

	free(buff);

   378

   379

	// write 8-bit color palette

   380

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

   381

		fclose(f);

   382

		return false;

   383

	}

   384

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

   385

		fclose(f);

   386

		return false;

   387

	}

   388

	fclose(f);

   389

   390

	return true;

   391

}

   392

   393

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

   394

//*** GENERIC SCREENSHOT CODE

   395

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

   396

   397

static const ScreenshotFormat _screenshot_formats[] = {

   398

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

   399

#if defined(WITH_PNG)

   400

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

   401

#endif

   402

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

   403

};

   404

   405

void InitializeScreenshotFormats(void)

   406

{

   407

	int i, j;

   408

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

   409

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

   410

			j = i;

   411

			break;

   412

		}

   413

	_cur_screenshot_format = j;

   414

	_num_screenshot_formats = lengthof(_screenshot_formats);

   415

}

   416

   417

const char *GetScreenshotFormatDesc(int i)

   418

{

   419

	return _screenshot_formats[i].name;

   420

}

   421

   422

void SetScreenshotFormat(int i)

   423

{

   424

	_cur_screenshot_format = i;

   425

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

   426

}

   427

   428

// screenshot generator that dumps the current video buffer

   429

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

   430

{

   431

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

   432

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

   433

		++y;

   434

		buf += pitch;

   435

	}

   436

}

   437

   438

// generate a large piece of the world

   439

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

   440

{

   441

	ViewPort *vp = (ViewPort *)userdata;

   442

	DrawPixelInfo dpi, *old_dpi;

   443

	int wx, left;

   444

   445

	old_dpi = _cur_dpi;

   446

	_cur_dpi = &dpi;

   447

   448

	dpi.dst_ptr = buf;

   449

	dpi.height = n;

   450

	dpi.width = vp->width;

   451

	dpi.pitch = pitch;

   452

	dpi.zoom = 0;

   453

	dpi.left = 0;

   454

	dpi.top = y;

   455

   456

	left = 0;

   457

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

   458

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

   459

		left += wx;

   460

   461

		ViewportDoDraw(vp,

   462

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

   463

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

   464

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

   465

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

   466

		);

   467

	}

   468

   469

	_cur_dpi = old_dpi;

   470

}

   471

   472

static char *MakeScreenshotName(const char *ext)

   473

{

   474

	static char filename[256];

   475

	char *base;

   476

	int serial;

   477

   478

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

   479

		sprintf(_screenshot_name, "screenshot");

   480

	} else {

   481

		Player *p = &_players[_local_player];

   482

		SetDParam(0, p->name_1);

   483

		SetDParam(1, p->name_2);

   484

		SetDParam(2, _date);

   485

		GetString(_screenshot_name, STR_4004);

   486

	}

   487

   488

	base = strchr(_screenshot_name, 0);

   489

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

   490

   491

	serial = 0;

   492

	for (;;) {

   493

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

   494

		if (!FileExists(filename))

   495

			break;

   496

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

   497

	}

   498

   499

	return filename;

   500

}

   501

   502

bool MakeScreenshot(void)

   503

{

   504

	const ScreenshotFormat *sf = _screenshot_formats + _cur_screenshot_format;

   505

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

   506

}

   507

   508

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

   509

{

   510

	ViewPort vp;

   511

	const ScreenshotFormat *sf;

   512

   513

	vp.zoom = zoom;

   514

	vp.left = 0;