1

#include "stdafx.h"

     2

#include "openttd.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

    16

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

    17

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

    18

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

    19

    20

typedef struct {

    21

	const char *name;

    22

	const char *extension;

    23

	ScreenshotHandlerProc *proc;

    24

} ScreenshotFormat;

    25

    26

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

    27

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

    28

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

    29

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

    30

#pragma pack(push, 1)

    31

#endif

    32

    33

typedef struct BitmapFileHeader {

    34

	uint16 type;

    35

	uint32 size;

    36

	uint32 reserved;

    37

	uint32 off_bits;

    38

} GCC_PACK BitmapFileHeader;

    39

assert_compile(sizeof(BitmapFileHeader) == 14);

    40

    41

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

    42

#pragma pack(pop)

    43

#endif

    44

    45

typedef struct BitmapInfoHeader {

    46

	uint32 size;

    47

	int32 width, height;

    48

	uint16 planes, bitcount;

    49

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

    50

} BitmapInfoHeader;

    51

assert_compile(sizeof(BitmapInfoHeader) == 40);

    52

    53

typedef struct RgbQuad {

    54

	byte blue, green, red, reserved;

    55

} RgbQuad;

    56

assert_compile(sizeof(RgbQuad) == 4);

    57

    58

// generic .BMP writer

    59

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

    60

{

    61

	BitmapFileHeader bfh;

    62

	BitmapInfoHeader bih;

    63

	RgbQuad rq[256];

    64

	Pixel *buff;

    65

	FILE *f;

    66

	uint i, padw;

    67

	uint n, maxlines;

    68

    69

	// only implemented for 8bit images so far.

    70

	if (pixelformat != 8)

    71

		return false;

    72

    73

	f = fopen(name, "wb");

    74

	if (f == NULL) return false;

    75

    76

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

    77

	padw = (w + 3) & ~3;

    78

    79

	// setup the file header

    80

	bfh.type = TO_LE16('MB');

    81

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

    82

	bfh.reserved = 0;

    83

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

    84

    85

	// setup the info header

    86

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

    87

	bih.width = TO_LE32(w);

    88

	bih.height = TO_LE32(h);

    89

	bih.planes = TO_LE16(1);

    90

	bih.bitcount = TO_LE16(8);

    91

	bih.compression = 0;

    92

	bih.sizeimage = 0;

    93

	bih.xpels = 0;

    94

	bih.ypels = 0;

    95

	bih.clrused = 0;

    96

	bih.clrimp = 0;

    97

    98

	// convert the palette to the windows format

    99

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

   100

		rq[i].red   = palette[i].r;

   101

		rq[i].green = palette[i].g;

   102

		rq[i].blue  = palette[i].b;

   103

		rq[i].reserved = 0;

   104

	}

   105

   106

	// write file header and info header and palette

   107

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

   108

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

   109

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

   110

   111

	// use by default 64k temp memory

   112

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

   113

   114

	// now generate the bitmap bits

   115

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

   116

	if (buff == NULL) {

   117

		fclose(f);

   118

		return false;

   119

	}

   120

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

   121

   122

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

   123

	do {

   124

		// determine # lines

   125

		n = min(h, maxlines);

   126

		h -= n;

   127

   128

		// render the pixels

   129

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

   130

   131

		// write each line

   132

		while (n)

   133

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

   134

				free(buff);

   135

				fclose(f);

   136

				return false;

   137

			}

   138

	} while (h != 0);

   139

   140

	free(buff);

   141

	fclose(f);

   142

   143

	return true;

   144

}

   145

   146

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

   147

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

   148

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

   149

#if defined(WITH_PNG)

   150

#include <png.h>

   151

   152

static void PNGAPI png_my_error(png_structp png_ptr, png_const_charp message)

   153

{

   154

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

   155

	longjmp(png_ptr->jmpbuf, 1);

   156

}

   157

   158

static void PNGAPI png_my_warning(png_structp png_ptr, png_const_charp message)

   159

{

   160

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

   161

}

   162

   163

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

   164

{

   165

	png_color rq[256];

   166

	Pixel *buff;

   167

	FILE *f;

   168

	uint i, y, n;

   169

	uint maxlines;

   170

	png_structp png_ptr;

   171

	png_infop info_ptr;

   172

   173

	// only implemented for 8bit images so far.

   174

	if (pixelformat != 8)

   175

		return false;

   176

   177

	f = fopen(name, "wb");

   178

	if (f == NULL) return false;

   179

   180

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

   181

   182

	if (png_ptr == NULL) {

   183

		fclose(f);

   184

		return false;

   185

	}

   186

   187

	info_ptr = png_create_info_struct(png_ptr);

   188

	if (info_ptr == NULL) {

   189

		png_destroy_write_struct(&png_ptr, (png_infopp)NULL);

   190

		fclose(f);

   191

		return false;

   192

	}

   193

   194

	if (setjmp(png_jmpbuf(png_ptr))) {

   195

		png_destroy_write_struct(&png_ptr, &info_ptr);

   196

		fclose(f);

   197

		return false;

   198

	}

   199

   200

	png_init_io(png_ptr, f);

   201

   202

	png_set_filter(png_ptr, 0, PNG_FILTER_NONE);

   203

   204

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

   205

		PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);

   206

   207

	// convert the palette to the .PNG format.

   208

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

   209

		rq[i].red   = palette[i].r;

   210

		rq[i].green = palette[i].g;

   211

		rq[i].blue  = palette[i].b;

   212

	}

   213

   214

	png_set_PLTE(png_ptr, info_ptr, rq, 256);

   215

	png_write_info(png_ptr, info_ptr);

   216

	png_set_flush(png_ptr, 512);

   217

   218

	// use by default 64k temp memory

   219

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

   220

   221

	// now generate the bitmap bits

   222

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

   223

	if (buff == NULL) {

   224

		png_destroy_write_struct(&png_ptr, &info_ptr);

   225

		fclose(f);

   226

		return false;

   227

	}

   228

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

   229

   230

	y = 0;

   231

	do {

   232

		// determine # lines to write

   233

		n = min(h - y, maxlines);

   234

   235

		// render the pixels into the buffer

   236

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

   237

		y += n;

   238

   239

		// write them to png

   240

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

   241

			png_write_row(png_ptr, buff + i * w);

   242

	} while (y != h);

   243

   244

	png_write_end(png_ptr, info_ptr);

   245

	png_destroy_write_struct(&png_ptr, &info_ptr);

   246

   247

	free(buff);

   248

	fclose(f);

   249

	return true;

   250

}

   251

#endif // WITH_PNG

   252

   253

   254

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

   255

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

   256

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

   257

   258

typedef struct {

   259

	byte manufacturer;

   260

	byte version;

   261

	byte rle;

   262

	byte bpp;

   263

	uint32 unused;

   264

	uint16 xmax, ymax;

   265

	uint16 hdpi, vdpi;

   266

	byte pal_small[16*3];

   267

	byte reserved;

   268

	byte planes;

   269

	uint16 pitch;

   270

	uint16 cpal;

   271

	uint16 width;

   272

	uint16 height;

   273

	byte filler[54];

   274

} PcxHeader;

   275

assert_compile(sizeof(PcxHeader) == 128);

   276

   277

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

   278

{

   279

	Pixel *buff;

   280

	FILE *f;

   281

	uint maxlines;

   282

	uint y;

   283

	PcxHeader pcx;

   284

   285

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

   286

		return false;

   287

   288

	f = fopen(name, "wb");

   289

	if (f == NULL) return false;

   290

   291

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

   292

   293

	// setup pcx header

   294

	pcx.manufacturer = 10;

   295

	pcx.version = 5;

   296

	pcx.rle = 1;

   297

	pcx.bpp = 8;

   298

	pcx.xmax = TO_LE16(w - 1);

   299

	pcx.ymax = TO_LE16(h - 1);

   300

	pcx.hdpi = TO_LE16(320);

   301

	pcx.vdpi = TO_LE16(320);

   302

   303

	pcx.planes = 1;

   304

	pcx.cpal = TO_LE16(1);

   305

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

   306

	pcx.height = TO_LE16(h);

   307

   308

	// write pcx header

   309

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

   310

		fclose(f);

   311

		return false;

   312

	}

   313

   314

	// use by default 64k temp memory

   315

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

   316

   317

	// now generate the bitmap bits

   318

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

   319

	if (buff == NULL) {

   320

		fclose(f);

   321

		return false;

   322

	}

   323

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

   324

   325

	y = 0;

   326

	do {

   327

		// determine # lines to write

   328

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

   329

		uint i;

   330

   331

		// render the pixels into the buffer

   332

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

   333

		y += n;

   334

   335

		// write them to pcx

   336

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

   337

			const Pixel* bufp = buff + i * w;

   338

			byte runchar = bufp[0];

   339

			uint runcount = 1;

   340

			uint j;

   341

   342

			// for each pixel...

   343

			for (j = 1; j < w; j++) {

   344

				Pixel ch = bufp[j];

   345

   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

   387

	{assert_compile(sizeof(*palette) == 3);}

   388

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

   389

		fclose(f);

   390

		return false;

   391

	}

   392

	fclose(f);

   393

   394

	return true;

   395

}

   396

   397

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

   398

//*** GENERIC SCREENSHOT CODE

   399

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

   400

   401

static const ScreenshotFormat _screenshot_formats[] = {

   402

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

   403

#if defined(WITH_PNG)

   404

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

   405

#endif

   406

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

   407

};

   408

   409

void InitializeScreenshotFormats(void)

   410

{

   411

	int i, j;

   412

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

   413

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

   414

			j = i;

   415

			break;

   416

		}

   417

	_cur_screenshot_format = j;

   418

	_num_screenshot_formats = lengthof(_screenshot_formats);

   419

}

   420

   421

const char *GetScreenshotFormatDesc(int i)

   422

{

   423

	return _screenshot_formats[i].name;

   424

}

   425

   426

void SetScreenshotFormat(int i)

   427

{

   428

	_cur_screenshot_format = i;

   429

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

   430

}

   431

   432

// screenshot generator that dumps the current video buffer

   433

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

   434

{

   435

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

   436

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

   437

		++y;

   438

		buf += pitch;

   439

	}

   440

}

   441

   442

// generate a large piece of the world

   443

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

   444

{

   445

	ViewPort *vp = (ViewPort *)userdata;

   446

	DrawPixelInfo dpi, *old_dpi;

   447

	int wx, left;

   448

   449

	old_dpi = _cur_dpi;

   450

	_cur_dpi = &dpi;

   451

   452

	dpi.dst_ptr = buf;

   453

	dpi.height = n;

   454

	dpi.width = vp->width;

   455

	dpi.pitch = pitch;

   456

	dpi.zoom = 0;

   457

	dpi.left = 0;

   458

	dpi.top = y;

   459

   460

	left = 0;

   461

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

   462

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

   463

		left += wx;

   464

   465

		ViewportDoDraw(vp,

   466

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

   467

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

   468

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

   469

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

   470

		);

   471

	}

   472

   473

	_cur_dpi = old_dpi;

   474

}

   475

   476

static char *MakeScreenshotName(const char *ext)

   477

{

   478

	static char filename[256];

   479

	char *base;

   480

	int serial;

   481

   482

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

   483

		sprintf(_screenshot_name, "screenshot");

   484

	} else {

   485

		Player *p = &_players[_local_player];

   486

		SetDParam(0, p->name_1);

   487

		SetDParam(1, p->name_2);

   488

		SetDParam(2, _date);

   489

		GetString(_screenshot_name, STR_4004);

   490

	}

   491

   492

	base = strchr(_screenshot_name, 0);

   493

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

   494

   495

	serial = 0;

   496

	for (;;) {

   497

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

   498

		if (!FileExists(filename))

   499

			break;

   500

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

   501

	}

   502

   503

	return filename;

   504

}

   505

   506

bool MakeScreenshot(void)

   507

{

   508

	const ScreenshotFormat *sf = _screenshot_formats + _cur_screenshot_format;

   509

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

   510

}

   511