C++ DumpFile::writeUint16LE方法代码示例

static bool writeBMP(const Common::UString &filename, const byte *data,
		int width, int height) {

	if ((width <= 0) || (height <= 0) || !data)
		return false;

	Common::DumpFile file;

	if (!file.open(filename))
		return false;

	// The pitch of the output has to be divisible by 4, so
	// we output zeroes to make the pitch that far.
	int extraDataSize = width & 3;
	int imageSize = height * (width + extraDataSize) * 3;

	// Main bitmap header
	file.writeByte('B');
	file.writeByte('M');
	file.writeUint32LE(14 + 40 + imageSize); // Size
	file.writeUint32LE(0); // reserved
	file.writeUint32LE(14 + 40); // Image offset after both headers

	// v3 header
	file.writeUint32LE(40);
	file.writeUint32LE(width);
	file.writeUint32LE(height);
	file.writeUint16LE(1);
	file.writeUint16LE(24);
	file.writeUint32LE(0);
	file.writeUint32LE(imageSize);
	file.writeUint32LE(72);
	file.writeUint32LE(72);
	file.writeUint32LE(0);
	file.writeUint32LE(0);

	if (extraDataSize != 0) {
		// Dump, making sure the pitch is correct
		while (height--) {
			file.write(data, width * 3);

			// Ensure we're on a 4-byte boundary
			for (int i = 0; i < extraDataSize; i++)
				file.writeByte(0);

			data += width * 3;
		}
	} else {
		// Dump directly (can do all at once here because the data
		// is already good for BMP output)
		file.write(data, width * height * 3);
	}

	if (!file.flush() || file.err())
		return false;

	file.close();
	return true;
}

bool Console::cmdDumpImage(int argc, const char **argv) {
	if (argc != 2) {
		debugPrintf("Use %s <TGA/TGZ name> to dump a Z-Vision TGA/TGZ image into a regular BMP image\n", argv[0]);
		return true;
	}

	Common::String fileName = argv[1];
	if (!fileName.hasSuffix(".tga")) {
		debugPrintf("%s is not an image file", argv[1]);
	}

	Common::File f;
	if (!_engine->getSearchManager()->openFile(f, argv[1])) {
		warning("File not found: %s", argv[1]);
		return true;
	}

	Graphics::Surface surface;
	_engine->getRenderManager()->readImageToSurface(argv[1], surface, false);

	// Open file
	Common::DumpFile out;

	fileName.setChar('b', fileName.size() - 3);
	fileName.setChar('m', fileName.size() - 2);
	fileName.setChar('p', fileName.size() - 1);

	out.open(fileName);

	// Write BMP header
	out.writeByte('B');
	out.writeByte('M');
	out.writeUint32LE(surface.h * surface.pitch + 54);
	out.writeUint32LE(0);
	out.writeUint32LE(54);
	out.writeUint32LE(40);
	out.writeUint32LE(surface.w);
	out.writeUint32LE(surface.h);
	out.writeUint16LE(1);
	out.writeUint16LE(16);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);

	// Write pixel data to BMP
	out.write(surface.getPixels(), surface.pitch * surface.h);

	out.flush();
	out.close();

	surface.free();

	return true;
}

void OpenGLGraphicsManager::saveScreenshot(const Common::String &filename) const {
	const uint width  = _outputScreenWidth;
	const uint height = _outputScreenHeight;

	// A line of a BMP image must have a size divisible by 4.
	// We calculate the padding bytes needed here.
	// Since we use a 3 byte per pixel mode, we can use width % 4 here, since
	// it is equal to 4 - (width * 3) % 4. (4 - (width * Bpp) % 4, is the
	// usual way of computing the padding bytes required).
	const uint linePaddingSize = width % 4;
	const uint lineSize        = width * 3 + linePaddingSize;

	// Allocate memory for screenshot
	uint8 *pixels = new uint8[lineSize * height];

	// Get pixel data from OpenGL buffer
	GLCALL(glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, pixels));

	// BMP stores as BGR. Since we can't assume that GL_BGR is supported we
	// will swap the components from the RGB we read to BGR on our own.
	for (uint y = height; y-- > 0;) {
		uint8 *line = pixels + y * lineSize;

		for (uint x = width; x > 0; --x, line += 3) {
			SWAP(line[0], line[2]);
		}
	}

	// Open file
	Common::DumpFile out;
	out.open(filename);

	// Write BMP header
	out.writeByte('B');
	out.writeByte('M');
	out.writeUint32LE(height * lineSize + 54);
	out.writeUint32LE(0);
	out.writeUint32LE(54);
	out.writeUint32LE(40);
	out.writeUint32LE(width);
	out.writeUint32LE(height);
	out.writeUint16LE(1);
	out.writeUint16LE(24);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);

	// Write pixel data to BMP
	out.write(pixels, lineSize * height);

	// Free allocated memory
	delete[] pixels;
}

bool Console::cmdRawToWav(int argc, const char **argv) {
	if (argc != 3) {
		debugPrintf("Use %s <rawFilePath> <wavFileName> to dump a .RAW file to .WAV\n", argv[0]);
		return true;
	}

	Common::File file;
	if (!_engine->getSearchManager()->openFile(file, argv[1])) {
		warning("File not found: %s", argv[1]);
		return true;
	}

	Audio::AudioStream *audioStream = makeRawZorkStream(argv[1], _engine);

	Common::DumpFile output;
	output.open(argv[2]);

	output.writeUint32BE(MKTAG('R', 'I', 'F', 'F'));
	output.writeUint32LE(file.size() * 2 + 36);
	output.writeUint32BE(MKTAG('W', 'A', 'V', 'E'));
	output.writeUint32BE(MKTAG('f', 'm', 't', ' '));
	output.writeUint32LE(16);
	output.writeUint16LE(1);
	uint16 numChannels;
	if (audioStream->isStereo()) {
		numChannels = 2;
		output.writeUint16LE(2);
	} else {
		numChannels = 1;
		output.writeUint16LE(1);
	}
	output.writeUint32LE(audioStream->getRate());
	output.writeUint32LE(audioStream->getRate() * numChannels * 2);
	output.writeUint16LE(numChannels * 2);
	output.writeUint16LE(16);
	output.writeUint32BE(MKTAG('d', 'a', 't', 'a'));
	output.writeUint32LE(file.size() * 2);
	int16 *buffer = new int16[file.size()];
	audioStream->readBuffer(buffer, file.size());
#ifndef SCUMM_LITTLE_ENDIAN
	for (int i = 0; i < file.size(); ++i)
		buffer[i] = TO_LE_16(buffer[i]);
#endif
	output.write(buffer, file.size() * 2);

	delete[] buffer;


	return true;
}

void convertRawToWav(const Common::String &inputFile, ZVision *engine, const Common::String &outputFile) {
	Common::File file;
	if (!file.open(inputFile))
		return;

	Audio::AudioStream *audioStream = makeRawZorkStream(inputFile, engine);

	Common::DumpFile output;
	output.open(outputFile);

	output.writeUint32BE(MKTAG('R', 'I', 'F', 'F'));
	output.writeUint32LE(file.size() * 2 + 36);
	output.writeUint32BE(MKTAG('W', 'A', 'V', 'E'));
	output.writeUint32BE(MKTAG('f', 'm', 't', ' '));
	output.writeUint32LE(16);
	output.writeUint16LE(1);
	uint16 numChannels;
	if (audioStream->isStereo()) {
		numChannels = 2;
		output.writeUint16LE(2);
	} else {
		numChannels = 1;
		output.writeUint16LE(1);
	}
	output.writeUint32LE(audioStream->getRate());
	output.writeUint32LE(audioStream->getRate() * numChannels * 2);
	output.writeUint16LE(numChannels * 2);
	output.writeUint16LE(16);
	output.writeUint32BE(MKTAG('d', 'a', 't', 'a'));
	output.writeUint32LE(file.size() * 2);
	int16 *buffer = new int16[file.size()];
	audioStream->readBuffer(buffer, file.size());
	output.write(buffer, file.size() * 2);

	delete[] buffer;
}

//.........这里部分代码省略.........
	if (hardwareFormat.bytesPerPixel == 2) {
		uint16 *palette = (uint16 *)_cursor->getPalette() + _cursorKeyColor;
		*palette &= ~aMask;
	} else if (hardwareFormat.bytesPerPixel == 4) {
		uint32 *palette = (uint32 *)_cursor->getPalette() + _cursorKeyColor;
		*palette &= ~aMask;
	} else {
		warning("OpenGLGraphicsManager::updateCursorPalette: Unsupported pixel depth %d", hardwareFormat.bytesPerPixel);
	}
}

void OpenGLGraphicsManager::recalculateCursorScaling() {
	if (!_cursor || !_gameScreen) {
		return;
	}

	// By default we use the unscaled versions.
	_cursorHotspotXScaled = _cursorHotspotX;
	_cursorHotspotYScaled = _cursorHotspotY;
	_cursorWidthScaled = _cursor->getWidth();
	_cursorHeightScaled = _cursor->getHeight();

	// In case scaling is actually enabled we will scale the cursor according
	// to the game screen.
	if (!_cursorDontScale) {
		const frac_t screenScaleFactorX = intToFrac(_displayWidth)  / _gameScreen->getWidth();
		const frac_t screenScaleFactorY = intToFrac(_displayHeight) / _gameScreen->getHeight();

		_cursorHotspotXScaled = fracToInt(_cursorHotspotXScaled * screenScaleFactorX);
		_cursorWidthScaled    = fracToInt(_cursorWidthScaled    * screenScaleFactorX);

		_cursorHotspotYScaled = fracToInt(_cursorHotspotYScaled * screenScaleFactorY);
		_cursorHeightScaled   = fracToInt(_cursorHeightScaled   * screenScaleFactorY);
	}
}

#ifdef USE_OSD
const Graphics::Font *OpenGLGraphicsManager::getFontOSD() {
	return FontMan.getFontByUsage(Graphics::FontManager::kLocalizedFont);
}
#endif

void OpenGLGraphicsManager::saveScreenshot(const Common::String &filename) const {
	const uint width  = _outputScreenWidth;
	const uint height = _outputScreenHeight;

	// A line of a BMP image must have a size divisible by 4.
	// We calculate the padding bytes needed here.
	// Since we use a 3 byte per pixel mode, we can use width % 4 here, since
	// it is equal to 4 - (width * 3) % 4. (4 - (width * Bpp) % 4, is the
	// usual way of computing the padding bytes required).
	const uint linePaddingSize = width % 4;
	const uint lineSize        = width * 3 + linePaddingSize;

	// Allocate memory for screenshot
	uint8 *pixels = new uint8[lineSize * height];

	// Get pixel data from OpenGL buffer
	GLCALL(glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, pixels));

	// BMP stores as BGR. Since we can't assume that GL_BGR is supported we
	// will swap the components from the RGB we read to BGR on our own.
	for (uint y = height; y-- > 0;) {
		uint8 *line = pixels + y * lineSize;

		for (uint x = width; x > 0; --x, line += 3) {
			SWAP(line[0], line[2]);
		}
	}

	// Open file
	Common::DumpFile out;
	out.open(filename);

	// Write BMP header
	out.writeByte('B');
	out.writeByte('M');
	out.writeUint32LE(height * lineSize + 54);
	out.writeUint32LE(0);
	out.writeUint32LE(54);
	out.writeUint32LE(40);
	out.writeUint32LE(width);
	out.writeUint32LE(height);
	out.writeUint16LE(1);
	out.writeUint16LE(24);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);

	// Write pixel data to BMP
	out.write(pixels, lineSize * height);

	// Free allocated memory
	delete[] pixels;
}

} // End of namespace OpenGL

//.........这里部分代码省略.........
	}

	if (_cursorPaletteEnabled) {
		_cursor->setPalette(0, 256, _cursorPalette);
	} else {
		_cursor->setPalette(0, 256, _gamePalette);
	}

	_cursor->setColorKey(_cursorKeyColor);
}

void OpenGLGraphicsManager::recalculateCursorScaling() {
	if (!_cursor || !_gameScreen) {
		return;
	}

	// By default we use the unscaled versions.
	_cursorHotspotXScaled = _cursorHotspotX;
	_cursorHotspotYScaled = _cursorHotspotY;
	_cursorWidthScaled = _cursor->getWidth();
	_cursorHeightScaled = _cursor->getHeight();

	// In case scaling is actually enabled we will scale the cursor according
	// to the game screen.
	if (!_cursorDontScale) {
		const frac_t screenScaleFactorX = intToFrac(_displayWidth)  / _gameScreen->getWidth();
		const frac_t screenScaleFactorY = intToFrac(_displayHeight) / _gameScreen->getHeight();

		_cursorHotspotXScaled = fracToInt(_cursorHotspotXScaled * screenScaleFactorX);
		_cursorWidthScaled    = fracToInt(_cursorWidthScaled    * screenScaleFactorX);

		_cursorHotspotYScaled = fracToInt(_cursorHotspotYScaled * screenScaleFactorY);
		_cursorHeightScaled   = fracToInt(_cursorHeightScaled   * screenScaleFactorY);
	}
}

#ifdef USE_OSD
const Graphics::Font *OpenGLGraphicsManager::getFontOSD() {
	return FontMan.getFontByUsage(Graphics::FontManager::kLocalizedFont);
}
#endif

void OpenGLGraphicsManager::saveScreenshot(const Common::String &filename) const {
	const uint width  = _outputScreenWidth;
	const uint height = _outputScreenHeight;

	// A line of a BMP image must have a size divisible by 4.
	// We calculate the padding bytes needed here.
	// Since we use a 3 byte per pixel mode, we can use width % 4 here, since
	// it is equal to 4 - (width * 3) % 4. (4 - (width * Bpp) % 4, is the
	// usual way of computing the padding bytes required).
	const uint linePaddingSize = width % 4;
	const uint lineSize        = width * 3 + linePaddingSize;

	// Allocate memory for screenshot
	uint8 *pixels = new uint8[lineSize * height];

	// Get pixel data from OpenGL buffer
	GL_CALL(glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, pixels));

	// BMP stores as BGR. Since we can't assume that GL_BGR is supported we
	// will swap the components from the RGB we read to BGR on our own.
	for (uint y = height; y-- > 0;) {
		uint8 *line = pixels + y * lineSize;

		for (uint x = width; x > 0; --x, line += 3) {
			SWAP(line[0], line[2]);
		}
	}

	// Open file
	Common::DumpFile out;
	out.open(filename);

	// Write BMP header
	out.writeByte('B');
	out.writeByte('M');
	out.writeUint32LE(height * lineSize + 54);
	out.writeUint32LE(0);
	out.writeUint32LE(54);
	out.writeUint32LE(40);
	out.writeUint32LE(width);
	out.writeUint32LE(height);
	out.writeUint16LE(1);
	out.writeUint16LE(24);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);
	out.writeUint32LE(0);

	// Write pixel data to BMP
	out.write(pixels, lineSize * height);

	// Free allocated memory
	delete[] pixels;
}

} // End of namespace OpenGL