From 4516b5ea24e6c0056984a65fe4fff33553931487 Mon Sep 17 00:00:00 2001
From: Matthew Hoops
Date: Sat, 2 Jul 2011 21:02:58 -0400
Subject: GRAPHICS: Convert PictDecoder to the ImageDecoder API

---
 graphics/decoders/pict.cpp | 531 +++++++++++++++++++++++++++++++++++++++++++++
 graphics/decoders/pict.h   | 130 +++++++++++
 2 files changed, 661 insertions(+)
 create mode 100644 graphics/decoders/pict.cpp
 create mode 100644 graphics/decoders/pict.h

(limited to 'graphics/decoders')

diff --git a/graphics/decoders/pict.cpp b/graphics/decoders/pict.cpp
new file mode 100644
index 0000000000..9b28f4352e
--- /dev/null
+++ b/graphics/decoders/pict.cpp
@@ -0,0 +1,531 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "common/debug.h"
+#include "common/endian.h"
+#include "common/stream.h"
+#include "common/substream.h"
+#include "common/textconsole.h"
+
+#include "graphics/surface.h"
+#include "graphics/jpeg.h"
+#include "graphics/decoders/pict.h"
+
+namespace Graphics {
+
+// The PICT code is based off of the QuickDraw specs:
+// http://developer.apple.com/legacy/mac/library/documentation/mac/QuickDraw/QuickDraw-461.html
+// http://developer.apple.com/legacy/mac/library/documentation/mac/QuickDraw/QuickDraw-269.html
+
+PICTDecoder::PICTDecoder() {
+	_outputSurface = 0;
+}
+
+PICTDecoder::~PICTDecoder() {
+	destroy();
+}
+
+void PICTDecoder::destroy() {
+	if (_outputSurface) {
+		_outputSurface->free();
+		delete _outputSurface;
+		_outputSurface = 0;
+	}
+}
+
+#define OPCODE(a, b, c) _opcodes.push_back(PICTOpcode(a, &PICTDecoder::b, c))
+
+void PICTDecoder::setupOpcodesCommon() {
+	OPCODE(0x0000, o_nop, "NOP");
+	OPCODE(0x0001, o_clip, "Clip");
+	OPCODE(0x0003, o_txFont, "TxFont");
+	OPCODE(0x0004, o_txFace, "TxFace");
+	OPCODE(0x0007, o_pnSize, "PnSize");
+	OPCODE(0x000D, o_txSize, "TxSize");
+	OPCODE(0x0010, o_txRatio, "TxRatio");
+	OPCODE(0x0011, o_versionOp, "VersionOp");
+	OPCODE(0x001E, o_nop, "DefHilite");
+	OPCODE(0x0028, o_longText, "LongText");
+	OPCODE(0x00A1, o_longComment, "LongComment");
+	OPCODE(0x00FF, o_opEndPic, "OpEndPic");
+	OPCODE(0x0C00, o_headerOp, "HeaderOp");
+}
+
+void PICTDecoder::setupOpcodesNormal() {
+	setupOpcodesCommon();
+	OPCODE(0x0098, on_packBitsRect, "PackBitsRect");
+	OPCODE(0x009A, on_directBitsRect, "DirectBitsRect");
+	OPCODE(0x8200, on_compressedQuickTime, "CompressedQuickTime");
+}
+
+void PICTDecoder::setupOpcodesQuickTime() {
+	setupOpcodesCommon();
+	OPCODE(0x0098, oq_packBitsRect, "PackBitsRect");
+	OPCODE(0x009A, oq_directBitsRect, "DirectBitsRect");
+	OPCODE(0x8200, oq_compressedQuickTime, "CompressedQuickTime");
+}
+
+#undef OPCODE
+
+void PICTDecoder::o_nop(Common::SeekableReadStream &) {
+	// Nothing to do
+}
+
+void PICTDecoder::o_clip(Common::SeekableReadStream &stream) {
+	// Ignore
+	stream.skip(stream.readUint16BE() - 2);
+}
+
+void PICTDecoder::o_txFont(Common::SeekableReadStream &stream) {
+	// Ignore
+	stream.readUint16BE();
+}
+
+void PICTDecoder::o_txFace(Common::SeekableReadStream &stream) {
+	// Ignore
+	stream.readByte();
+}
+
+void PICTDecoder::o_pnSize(Common::SeekableReadStream &stream) {
+	// Ignore
+	stream.readUint16BE();
+	stream.readUint16BE();
+}
+
+void PICTDecoder::o_txSize(Common::SeekableReadStream &stream) {
+	// Ignore
+	stream.readUint16BE();
+}
+
+void PICTDecoder::o_txRatio(Common::SeekableReadStream &stream) {
+	// Ignore
+	stream.readUint16BE();
+	stream.readUint16BE();
+	stream.readUint16BE();
+	stream.readUint16BE();
+}
+
+void PICTDecoder::o_versionOp(Common::SeekableReadStream &stream) {
+	// We only support v2 extended
+	if (stream.readUint16BE() != 0x02FF)
+		error("Unknown PICT version");
+}
+
+void PICTDecoder::o_longText(Common::SeekableReadStream &stream) {
+	// Ignore
+	stream.readUint16BE();
+	stream.readUint16BE();
+	stream.skip(stream.readByte());
+}
+
+void PICTDecoder::o_longComment(Common::SeekableReadStream &stream) {
+	// Ignore
+	stream.readUint16BE();
+	stream.skip(stream.readUint16BE());
+}
+
+void PICTDecoder::o_opEndPic(Common::SeekableReadStream &stream) {
+	// We've reached the end of the picture
+	_continueParsing = false;
+}
+
+void PICTDecoder::o_headerOp(Common::SeekableReadStream &stream) {
+	// Read the basic header, but we don't really have to do anything with it
+	/* uint16 version = */ stream.readUint16BE();
+	stream.readUint16BE(); // Reserved
+	/* uint32 hRes = */ stream.readUint32BE();
+	/* uint32 vRes = */ stream.readUint32BE();
+	Common::Rect origResRect;
+	origResRect.top = stream.readUint16BE();
+	origResRect.left = stream.readUint16BE();
+	origResRect.bottom = stream.readUint16BE();
+	origResRect.right = stream.readUint16BE();
+	stream.readUint32BE(); // Reserved
+}
+
+void PICTDecoder::on_packBitsRect(Common::SeekableReadStream &stream) {
+	// Unpack data (8bpp or lower)
+	unpackBitsRect(stream, true);
+}
+
+void PICTDecoder::on_directBitsRect(Common::SeekableReadStream &stream) {
+	// Unpack data (16bpp or higher)
+	unpackBitsRect(stream, false);
+}
+
+void PICTDecoder::on_compressedQuickTime(Common::SeekableReadStream &stream) {
+	// OK, here's the fun. We get to completely change how QuickDraw draws
+	// the data in PICT files.
+
+	// Swap out the opcodes to the new ones
+	_opcodes.clear();
+	setupOpcodesQuickTime();
+
+	// We'll decode the first QuickTime data from here, but the QuickTime-specific
+	// opcodes will take over from here on out. Normal opcodes, signing off.
+	decodeCompressedQuickTime(stream);
+}
+
+void PICTDecoder::oq_packBitsRect(Common::SeekableReadStream &stream) {
+	// Skip any data here (8bpp or lower)
+	skipBitsRect(stream, true);
+}
+
+void PICTDecoder::oq_directBitsRect(Common::SeekableReadStream &stream) {
+	// Skip any data here (16bpp or higher)
+	skipBitsRect(stream, false);
+}
+
+void PICTDecoder::oq_compressedQuickTime(Common::SeekableReadStream &stream) {
+	// Just pass the data along
+	decodeCompressedQuickTime(stream);
+}
+
+bool PICTDecoder::loadStream(Common::SeekableReadStream &stream) {
+	destroy();
+
+	// Initialize opcodes to their normal state
+	_opcodes.clear();
+	setupOpcodesNormal();
+
+	_continueParsing = true;
+	memset(_palette, 0, sizeof(_palette));
+
+	uint16 fileSize = stream.readUint16BE();
+
+	// If we have no file size here, we probably have a PICT from a file
+	// and not a resource. The other two bytes are the fileSize which we
+	// don't actually need (and already read if from a resource).
+	if (!fileSize)
+		stream.seek(512 + 2);
+
+	_imageRect.top = stream.readUint16BE();
+	_imageRect.left = stream.readUint16BE();
+	_imageRect.bottom = stream.readUint16BE();
+	_imageRect.right = stream.readUint16BE();
+	_imageRect.debugPrint(0, "PICT Rect:");
+
+	// NOTE: This is only a subset of the full PICT format.
+	//     - Only V2 (Extended) Images Supported
+	//     - CompressedQuickTime (JPEG) compressed data is supported
+	//     - DirectBitsRect/PackBitsRect compressed data is supported
+	for (uint32 opNum = 0; !stream.eos() && !stream.err() && stream.pos() < stream.size() && _continueParsing; opNum++) {
+		// PICT v2 opcodes are two bytes
+		uint16 opcode = stream.readUint16BE();
+
+		if (opNum == 0 && opcode != 0x0011)
+			error("Cannot find PICT version opcode");
+		else if (opNum == 1 && opcode != 0x0C00)
+			error("Cannot find PICT header opcode");
+
+		// Since opcodes are word-aligned, we need to mark our starting
+		// position here.
+		uint32 startPos = stream.pos();
+
+		for (uint32 i = 0; i < _opcodes.size(); i++) {
+			if (_opcodes[i].op == opcode) {
+				debug(4, "Running PICT opcode %04x '%s'", opcode, _opcodes[i].desc);
+				(this->*(_opcodes[i].proc))(stream);
+				break;
+			} else if (i == _opcodes.size() - 1) {
+				// Unknown opcode; attempt to continue forward
+				warning("Unknown PICT opcode %04x", opcode);
+			}
+		}
+
+		// Align
+		stream.skip((stream.pos() - startPos) & 1);
+	}
+
+	return _outputSurface;
+}
+
+PICTDecoder::PixMap PICTDecoder::readPixMap(Common::SeekableReadStream &stream, bool hasBaseAddr) {
+	PixMap pixMap;
+	pixMap.baseAddr = hasBaseAddr ? stream.readUint32BE() : 0;
+	pixMap.rowBytes = stream.readUint16BE() & 0x3fff;
+	pixMap.bounds.top = stream.readUint16BE();
+	pixMap.bounds.left = stream.readUint16BE();
+	pixMap.bounds.bottom = stream.readUint16BE();
+	pixMap.bounds.right = stream.readUint16BE();
+	pixMap.pmVersion = stream.readUint16BE();
+	pixMap.packType = stream.readUint16BE();
+	pixMap.packSize = stream.readUint32BE();
+	pixMap.hRes = stream.readUint32BE();
+	pixMap.vRes = stream.readUint32BE();
+	pixMap.pixelType = stream.readUint16BE();
+	pixMap.pixelSize = stream.readUint16BE();
+	pixMap.cmpCount = stream.readUint16BE();
+	pixMap.cmpSize = stream.readUint16BE();
+	pixMap.planeBytes = stream.readUint32BE();
+	pixMap.pmTable = stream.readUint32BE();
+	pixMap.pmReserved = stream.readUint32BE();
+	return pixMap;
+}
+
+struct PackBitsRectData {
+	PICTDecoder::PixMap pixMap;
+	Common::Rect srcRect;
+	Common::Rect dstRect;
+	uint16 mode;
+};
+
+void PICTDecoder::unpackBitsRect(Common::SeekableReadStream &stream, bool hasPalette) {
+	PackBitsRectData packBitsData;
+	packBitsData.pixMap = readPixMap(stream, !hasPalette);
+
+	// Read in the palette if there is one present
+	if (hasPalette) {
+		// See http://developer.apple.com/legacy/mac/library/documentation/mac/QuickDraw/QuickDraw-267.html
+		stream.readUint32BE(); // seed
+		stream.readUint16BE(); // flags
+		uint16 colorCount = stream.readUint16BE() + 1;
+
+		for (uint32 i = 0; i < colorCount; i++) {
+			stream.readUint16BE();
+			_palette[i * 3] = stream.readUint16BE() >> 8;
+			_palette[i * 3 + 1] = stream.readUint16BE() >> 8;
+			_palette[i * 3 + 2] = stream.readUint16BE() >> 8;
+		}
+	}
+
+	packBitsData.srcRect.top = stream.readUint16BE();
+	packBitsData.srcRect.left = stream.readUint16BE();
+	packBitsData.srcRect.bottom = stream.readUint16BE();
+	packBitsData.srcRect.right = stream.readUint16BE();
+	packBitsData.dstRect.top = stream.readUint16BE();
+	packBitsData.dstRect.left = stream.readUint16BE();
+	packBitsData.dstRect.bottom = stream.readUint16BE();
+	packBitsData.dstRect.right = stream.readUint16BE();
+	packBitsData.mode = stream.readUint16BE();
+
+	uint16 width = packBitsData.srcRect.width();
+	uint16 height = packBitsData.srcRect.height();
+
+	byte bytesPerPixel = 0;
+
+	if (packBitsData.pixMap.pixelSize <= 8)
+		bytesPerPixel = 1;
+	else if (packBitsData.pixMap.pixelSize == 32)
+		bytesPerPixel = packBitsData.pixMap.cmpCount;
+	else
+		bytesPerPixel = packBitsData.pixMap.pixelSize / 8;
+
+	// Ensure we have enough space in the buffer to hold an entire line's worth of pixels
+	uint32 lineSize = MAX<int>(width * bytesPerPixel + (8 * 2 / packBitsData.pixMap.pixelSize), packBitsData.pixMap.rowBytes);
+	byte *buffer = new byte[lineSize * height];
+
+	// Read in amount of data per row
+	for (uint16 i = 0; i < packBitsData.pixMap.bounds.height(); i++) {
+		// NOTE: Compression 0 is "default". The format in SCI games is packed when 0.
+		// In the future, we may need to have something to set the  "default" packing
+		// format, but this is good for now.
+
+		if (packBitsData.pixMap.packType == 1 || packBitsData.pixMap.rowBytes < 8) { // Unpacked, Pad-Byte (on 24-bit)
+			// TODO: Finish this. Hasn't been needed (yet).
+			error("Unpacked DirectBitsRect data (padded)");
+		} else if (packBitsData.pixMap.packType == 2) { // Unpacked, No Pad-Byte (on 24-bit)
+			// TODO: Finish this. Hasn't been needed (yet).
+			error("Unpacked DirectBitsRect data (not padded)");
+		} else if (packBitsData.pixMap.packType == 0 || packBitsData.pixMap.packType > 2) { // Packed
+			uint16 byteCount = (packBitsData.pixMap.rowBytes > 250) ? stream.readUint16BE() : stream.readByte();
+			unpackBitsLine(buffer + i * width * bytesPerPixel, packBitsData.pixMap.rowBytes, stream.readStream(byteCount), packBitsData.pixMap.pixelSize, bytesPerPixel);
+		}
+	}
+
+	_outputSurface = new Graphics::Surface();
+
+	switch (bytesPerPixel) {
+	case 1:
+		// Just copy to the image
+		_outputSurface->create(width, height, PixelFormat::createFormatCLUT8());
+		memcpy(_outputSurface->pixels, buffer, _outputSurface->w * _outputSurface->h);
+		break;
+	case 2:
+		// Convert from 16-bit to whatever surface we need
+		_outputSurface->create(width, height, PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0));
+		for (uint16 y = 0; y < _outputSurface->h; y++)
+			for (uint16 x = 0; x < _outputSurface->w; x++)
+				WRITE_UINT16(_outputSurface->getBasePtr(x, y), READ_BE_UINT16(buffer + (y * _outputSurface->w + x) * 2));
+		break;
+	case 3:
+		// Convert from 24-bit (planar!) to whatever surface we need
+		_outputSurface->create(width, height, Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0));
+		for (uint16 y = 0; y < _outputSurface->h; y++) {
+			for (uint16 x = 0; x < _outputSurface->w; x++) {
+				byte r = *(buffer + y * _outputSurface->w * 3 + x);
+				byte g = *(buffer + y * _outputSurface->w * 3 + _outputSurface->w + x);
+				byte b = *(buffer + y * _outputSurface->w * 3 + _outputSurface->w * 2 + x);
+				*((uint32 *)_outputSurface->getBasePtr(x, y)) = _outputSurface->format.RGBToColor(r, g, b);
+			}
+		}
+		break;
+	case 4:
+		// Convert from 32-bit (planar!) to whatever surface we need
+		_outputSurface->create(width, height, Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0));
+		for (uint16 y = 0; y < _outputSurface->h; y++) {
+			for (uint16 x = 0; x < _outputSurface->w; x++) {
+				byte r = *(buffer + y * _outputSurface->w * 4 + x);
+				byte g = *(buffer + y * _outputSurface->w * 4 + _outputSurface->w + x);
+				byte b = *(buffer + y * _outputSurface->w * 4 + _outputSurface->w * 2 + x);
+				byte a = *(buffer + y * _outputSurface->w * 4 + _outputSurface->w * 3 + x);
+				*((uint32 *)_outputSurface->getBasePtr(x, y)) = _outputSurface->format.ARGBToColor(r, g, b, a);
+			}
+		}
+		break;
+	}
+
+	delete[] buffer;
+}
+
+void PICTDecoder::unpackBitsLine(byte *out, uint32 length, Common::SeekableReadStream *data, byte bitsPerPixel, byte bytesPerPixel) {
+	uint32 dataDecoded = 0;
+	byte bytesPerDecode = (bytesPerPixel == 2) ? 2 : 1;
+
+	while (data->pos() < data->size() && dataDecoded < length) {
+		byte op = data->readByte();
+
+		if (op & 0x80) {
+			uint32 runSize = (op ^ 255) + 2;
+			uint16 value = (bytesPerDecode == 2) ? data->readUint16BE() : data->readByte();
+
+			for (uint32 i = 0; i < runSize; i++) {
+				if (bytesPerDecode == 2) {
+					WRITE_UINT16(out, value);
+					out += 2;
+				} else {
+					outputPixelBuffer(out, value, bitsPerPixel);
+				}
+			}
+			dataDecoded += runSize * bytesPerDecode;
+		} else {
+			uint32 runSize = op + 1;
+
+			if (bytesPerDecode == 1) {
+				for (uint32 i = 0; i < runSize; i++)
+					outputPixelBuffer(out, data->readByte(), bitsPerPixel);
+			} else {
+				for (uint32 i = 0; i < runSize; i++) {
+					WRITE_UINT16(out, data->readUint16BE());
+					out += 2;
+				}
+			}
+
+			dataDecoded += runSize * bytesPerDecode;
+		}
+	}
+
+	// HACK: Even if the data is 24-bit, rowBytes is still 32-bit
+	if (bytesPerPixel == 3)
+		dataDecoded += length / 4;
+
+	if (length != dataDecoded)
+		warning("Mismatched PackBits read (%d/%d)", dataDecoded, length);
+
+	delete data;
+}
+
+void PICTDecoder::outputPixelBuffer(byte *&out, byte value, byte bitsPerPixel) {
+	switch (bitsPerPixel) {
+	case 1:
+		for (int i = 7; i >= 0; i--)
+			*out++ = (value >> i) & 1;
+		break;
+	case 2:
+		for (int i = 6; i >= 0; i -= 2)
+			*out++ = (value >> i) & 3;
+		break;
+	case 4:
+		*out++ = (value >> 4) & 0xf;
+		*out++ = value & 0xf;
+		break;
+	default:
+		*out++ = value;
+	}
+}
+
+void PICTDecoder::skipBitsRect(Common::SeekableReadStream &stream, bool hasPalette) {
+	// Step through a PackBitsRect/DirectBitsRect function
+
+	if (!hasPalette)
+		stream.readUint32BE();
+
+	uint16 rowBytes = stream.readUint16BE();
+	uint16 height = stream.readUint16BE();
+	stream.readUint16BE();
+	height = stream.readUint16BE() - height;
+	stream.readUint16BE();
+
+	uint16 packType;
+
+	// Top two bits signify PixMap vs BitMap
+	if (rowBytes & 0xC000) {
+		// PixMap
+		stream.readUint16BE();
+		packType = stream.readUint16BE();
+		stream.skip(14);
+		stream.readUint16BE(); // pixelSize
+		stream.skip(16);
+
+		if (hasPalette) {
+			stream.readUint32BE();
+			stream.readUint16BE();
+			stream.skip((stream.readUint16BE() + 1) * 8);
+		}
+
+		rowBytes &= 0x3FFF;
+	} else {
+		// BitMap
+		packType = 0;
+	}
+
+	stream.skip(18);
+
+	for (uint16 i = 0; i < height; i++) {
+		if (packType == 1 || packType == 2 || rowBytes < 8)
+			error("Unpacked PackBitsRect data");
+		else if (packType == 0 || packType > 2)
+			stream.skip((rowBytes > 250) ? stream.readUint16BE() : stream.readByte());
+	}
+}
+
+// Compressed QuickTime details can be found here:
+// http://developer.apple.com/legacy/mac/library/#documentation/QuickTime/Rm/CompressDecompress/ImageComprMgr/B-Chapter/2TheImageCompression.html
+// http://developer.apple.com/legacy/mac/library/#documentation/QuickTime/Rm/CompressDecompress/ImageComprMgr/F-Chapter/6WorkingwiththeImage.html
+void PICTDecoder::decodeCompressedQuickTime(Common::SeekableReadStream &stream) {
+	JPEG jpeg;
+
+	uint32 dataSize = stream.readUint32BE();
+	uint32 startPos = stream.pos();
+
+	Common::SeekableReadStream *jpegStream = new Common::SeekableSubReadStream(&stream, stream.pos() + 156, stream.pos() + dataSize);
+
+	if (!jpeg.read(jpegStream))
+		error("PICTDecoder::decodeCompressedQuickTime(): Could not decode JPEG data");
+
+	_outputSurface = jpeg.getSurface(Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0));
+
+	stream.seek(startPos + dataSize);
+	delete jpegStream;
+}
+
+} // End of namespace Graphics
diff --git a/graphics/decoders/pict.h b/graphics/decoders/pict.h
new file mode 100644
index 0000000000..b1e45a6bc1
--- /dev/null
+++ b/graphics/decoders/pict.h
@@ -0,0 +1,130 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef GRAPHICS_PICT_H
+#define GRAPHICS_PICT_H
+
+#include "common/array.h"
+#include "common/rect.h"
+#include "common/scummsys.h"
+
+#include "graphics/decoders/image_decoder.h"
+#include "graphics/pixelformat.h"
+
+namespace Common {
+class SeekableReadStream;
+}
+
+namespace Graphics {
+
+struct Surface;
+
+#define DECLARE_OPCODE(x) void x(Common::SeekableReadStream &stream)
+
+class PICTDecoder : public ImageDecoder {
+public:
+	PICTDecoder();
+	~PICTDecoder();
+
+	// ImageDecoder API
+	bool loadStream(Common::SeekableReadStream &stream);
+	void destroy();
+	const Surface *getSurface() const { return _outputSurface; }
+	const byte *getPalette() const { return _palette; }
+
+	struct PixMap {
+		uint32 baseAddr;
+		uint16 rowBytes;
+		Common::Rect bounds;
+		uint16 pmVersion;
+		uint16 packType;
+		uint32 packSize;
+		uint32 hRes;
+		uint32 vRes;
+		uint16 pixelType;
+		uint16 pixelSize;
+		uint16 cmpCount;
+		uint16 cmpSize;
+		uint32 planeBytes;
+		uint32 pmTable;
+		uint32 pmReserved;
+	};
+
+	static PixMap readPixMap(Common::SeekableReadStream &stream, bool hasBaseAddr = true);
+
+private:
+	Common::Rect _imageRect;
+	byte _palette[256 * 3];
+	Graphics::Surface *_outputSurface;
+	bool _continueParsing;
+
+	// Utility Functions
+	void unpackBitsRect(Common::SeekableReadStream &stream, bool hasPalette);
+	void unpackBitsLine(byte *out, uint32 length, Common::SeekableReadStream *stream, byte bitsPerPixel, byte bytesPerPixel);
+	void skipBitsRect(Common::SeekableReadStream &stream, bool hasPalette);
+	void decodeCompressedQuickTime(Common::SeekableReadStream &stream);
+	void outputPixelBuffer(byte *&out, byte value, byte bitsPerPixel);
+
+	// Opcodes
+	typedef void (PICTDecoder::*OpcodeProcPICT)(Common::SeekableReadStream &stream);
+	struct PICTOpcode {
+		PICTOpcode() { op = 0; proc = 0; desc = 0; }
+		PICTOpcode(uint16 o, OpcodeProcPICT p, const char *d) { op = o; proc = p; desc = d; }
+		uint16 op;
+		OpcodeProcPICT proc;
+		const char *desc;
+	};
+	Common::Array<PICTOpcode> _opcodes;
+
+	// Common Opcodes
+	void setupOpcodesCommon();
+	DECLARE_OPCODE(o_nop);
+	DECLARE_OPCODE(o_clip);
+	DECLARE_OPCODE(o_txFont);
+	DECLARE_OPCODE(o_txFace);
+	DECLARE_OPCODE(o_pnSize);
+	DECLARE_OPCODE(o_txSize);
+	DECLARE_OPCODE(o_txRatio);
+	DECLARE_OPCODE(o_versionOp);
+	DECLARE_OPCODE(o_longText);
+	DECLARE_OPCODE(o_longComment);
+	DECLARE_OPCODE(o_opEndPic);
+	DECLARE_OPCODE(o_headerOp);
+
+	// Regular-mode Opcodes
+	void setupOpcodesNormal();
+	DECLARE_OPCODE(on_packBitsRect);
+	DECLARE_OPCODE(on_directBitsRect);
+	DECLARE_OPCODE(on_compressedQuickTime);
+
+	// QuickTime-mode Opcodes
+	void setupOpcodesQuickTime();
+	DECLARE_OPCODE(oq_packBitsRect);
+	DECLARE_OPCODE(oq_directBitsRect);
+	DECLARE_OPCODE(oq_compressedQuickTime);
+};
+
+#undef DECLARE_OPCODE
+
+} // End of namespace Graphics
+
+#endif
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