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https://github.com/libretro/scummvm.git
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1ae0fe2d1e
The version number decides if opcodes are 1 or 2 bytes, but we don't know for sure which it is until the first opcode has been handled. But the way the o_versionOp1 opcode is defined, we should recognize it it regardless, so going from assumed version 2 to confirmed version 1 should be no problem. I do not have any test case to confirm this, though. What I do know is that going from assumed version 1 to confirmed version 2 does not work, so we want _version to be well defined (even if wrong) from the beginning.
638 lines
20 KiB
C++
638 lines
20 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "image/pict.h"
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#include "image/codecs/codec.h"
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#include "common/debug.h"
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#include "common/endian.h"
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#include "common/stream.h"
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#include "common/substream.h"
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#include "common/textconsole.h"
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#include "graphics/surface.h"
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namespace Image {
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// The PICT code is based off of the QuickDraw specs:
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// https://developer.apple.com/library/archive/documentation/mac/QuickDraw/QuickDraw-461.html
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// https://developer.apple.com/library/archive/documentation/mac/QuickDraw/QuickDraw-269.html
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PICTDecoder::PICTDecoder() {
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_outputSurface = 0;
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_paletteColorCount = 0;
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_version = 2;
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}
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PICTDecoder::~PICTDecoder() {
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destroy();
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}
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void PICTDecoder::destroy() {
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if (_outputSurface) {
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_outputSurface->free();
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delete _outputSurface;
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_outputSurface = 0;
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}
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_paletteColorCount = 0;
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}
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#define OPCODE(a, b, c) _opcodes.push_back(PICTOpcode(a, &PICTDecoder::b, c))
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void PICTDecoder::setupOpcodesCommon() {
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OPCODE(0x0000, o_nop, "NOP");
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OPCODE(0x0001, o_clip, "Clip");
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OPCODE(0x0003, o_txFont, "TxFont");
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OPCODE(0x0004, o_txFace, "TxFace");
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OPCODE(0x0007, o_pnSize, "PnSize");
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OPCODE(0x000D, o_txSize, "TxSize");
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OPCODE(0x0010, o_txRatio, "TxRatio");
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OPCODE(0x0011, o_versionOp, "VersionOp");
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OPCODE(0x001E, o_nop, "DefHilite");
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OPCODE(0x0028, o_longText, "LongText");
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OPCODE(0x00A1, o_longComment, "LongComment");
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OPCODE(0x00FF, o_opEndPic, "OpEndPic");
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OPCODE(0x0C00, o_headerOp, "HeaderOp");
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OPCODE(0x1101, o_versionOp1, "VersionOp1");
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}
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void PICTDecoder::setupOpcodesNormal() {
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setupOpcodesCommon();
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OPCODE(0x0090, on_bitsRect, "BitsRect");
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OPCODE(0x0098, on_packBitsRect, "PackBitsRect");
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OPCODE(0x009A, on_directBitsRect, "DirectBitsRect");
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OPCODE(0x8200, on_compressedQuickTime, "CompressedQuickTime");
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}
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void PICTDecoder::setupOpcodesQuickTime() {
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setupOpcodesCommon();
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OPCODE(0x0098, oq_packBitsRect, "PackBitsRect");
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OPCODE(0x009A, oq_directBitsRect, "DirectBitsRect");
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OPCODE(0x8200, oq_compressedQuickTime, "CompressedQuickTime");
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}
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#undef OPCODE
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void PICTDecoder::o_nop(Common::SeekableReadStream &) {
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// Nothing to do
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}
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void PICTDecoder::o_clip(Common::SeekableReadStream &stream) {
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// Ignore
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int size = stream.readUint16BE();
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debug(3, "CLIP: size is %d", size);
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if (size >= 10) {
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int x1 = stream.readSint16BE();
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int y1 = stream.readSint16BE();
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int x2 = stream.readSint16BE();
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int y2 = stream.readSint16BE();
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debug(3, "CLIP: RECT encountered: %d %d %d %d", x1, y1, x2, y2);
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stream.skip(size - 10);
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debug(3, "CLIP: skipped %d bytes", size - 10);
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} else {
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stream.skip(size - 2);
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debug(3, "CLIP: skipped %d bytes", size - 2);
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}
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}
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void PICTDecoder::o_txFont(Common::SeekableReadStream &stream) {
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// Ignore
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stream.readUint16BE();
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}
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void PICTDecoder::o_txFace(Common::SeekableReadStream &stream) {
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// Ignore
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stream.readByte();
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}
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void PICTDecoder::o_pnSize(Common::SeekableReadStream &stream) {
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// Ignore
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stream.readUint16BE();
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stream.readUint16BE();
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}
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void PICTDecoder::o_txSize(Common::SeekableReadStream &stream) {
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// Ignore
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stream.readUint16BE();
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}
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void PICTDecoder::o_txRatio(Common::SeekableReadStream &stream) {
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// Ignore
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stream.readUint16BE();
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stream.readUint16BE();
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stream.readUint16BE();
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stream.readUint16BE();
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}
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void PICTDecoder::o_versionOp(Common::SeekableReadStream &stream) {
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// We only support v2 extended
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if (stream.readUint16BE() != 0x02FF)
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error("Unknown PICT version");
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else
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_version = 2;
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}
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void PICTDecoder::o_versionOp1(Common::SeekableReadStream& stream) {
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_version = 1;
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}
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void PICTDecoder::o_longText(Common::SeekableReadStream &stream) {
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// Ignore
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stream.readUint16BE();
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stream.readUint16BE();
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stream.skip(stream.readByte());
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}
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void PICTDecoder::o_longComment(Common::SeekableReadStream &stream) {
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// Ignore
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stream.readUint16BE();
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stream.skip(stream.readUint16BE());
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}
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void PICTDecoder::o_opEndPic(Common::SeekableReadStream &stream) {
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// We've reached the end of the picture
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_continueParsing = false;
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}
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void PICTDecoder::o_headerOp(Common::SeekableReadStream &stream) {
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// Read the basic header, but we don't really have to do anything with it
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/* uint16 version = */ stream.readUint16BE();
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stream.readUint16BE(); // Reserved
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/* uint32 hRes = */ stream.readUint32BE();
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/* uint32 vRes = */ stream.readUint32BE();
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Common::Rect origResRect;
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origResRect.top = stream.readUint16BE();
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origResRect.left = stream.readUint16BE();
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origResRect.bottom = stream.readUint16BE();
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origResRect.right = stream.readUint16BE();
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stream.readUint32BE(); // Reserved
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}
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void PICTDecoder::on_bitsRect(Common::SeekableReadStream &stream) {
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// Copy unpacked data with clipped rectangle (8bpp or lower)
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unpackBitsRect(stream, true);
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}
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void PICTDecoder::on_packBitsRect(Common::SeekableReadStream &stream) {
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// Unpack data (8bpp or lower)
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unpackBitsRect(stream, true);
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}
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void PICTDecoder::on_directBitsRect(Common::SeekableReadStream &stream) {
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// Unpack data (16bpp or higher)
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unpackBitsRect(stream, false);
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}
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void PICTDecoder::on_compressedQuickTime(Common::SeekableReadStream &stream) {
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// OK, here's the fun. We get to completely change how QuickDraw draws
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// the data in PICT files.
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// Swap out the opcodes to the new ones
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_opcodes.clear();
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setupOpcodesQuickTime();
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// We'll decode the first QuickTime data from here, but the QuickTime-specific
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// opcodes will take over from here on out. Normal opcodes, signing off.
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decodeCompressedQuickTime(stream);
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}
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void PICTDecoder::oq_packBitsRect(Common::SeekableReadStream &stream) {
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// Skip any data here (8bpp or lower)
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skipBitsRect(stream, true);
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}
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void PICTDecoder::oq_directBitsRect(Common::SeekableReadStream &stream) {
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// Skip any data here (16bpp or higher)
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skipBitsRect(stream, false);
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}
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void PICTDecoder::oq_compressedQuickTime(Common::SeekableReadStream &stream) {
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// Just pass the data along
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decodeCompressedQuickTime(stream);
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}
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bool PICTDecoder::loadStream(Common::SeekableReadStream &stream) {
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destroy();
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// Initialize opcodes to their normal state
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_opcodes.clear();
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setupOpcodesNormal();
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_continueParsing = true;
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memset(_palette, 0, sizeof(_palette));
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uint16 fileSize = stream.readUint16BE();
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// If we have no file size here, we probably have a PICT from a file
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// and not a resource. The other two bytes are the fileSize which we
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// don't actually need (and already read if from a resource).
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if (!fileSize)
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stream.seek(512 + 2);
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_imageRect.top = stream.readUint16BE();
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_imageRect.left = stream.readUint16BE();
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_imageRect.bottom = stream.readUint16BE();
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_imageRect.right = stream.readUint16BE();
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_imageRect.debugPrint(8, "PICTDecoder::loadStream(): loaded rect: ");
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// NOTE: This is only a subset of the full PICT format.
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// - Only V2 (Extended) Images Supported
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// - CompressedQuickTime compressed data is supported
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// - DirectBitsRect/PackBitsRect compressed data is supported
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for (uint32 opNum = 0; !stream.eos() && !stream.err() && stream.pos() < stream.size() && _continueParsing; opNum++) {
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// PICT v2 opcodes are two bytes
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uint16 opcode;
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if (_version != 1)
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opcode = stream.readUint16BE();
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else
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opcode = stream.readByte();
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if (opNum == 0 && (opcode != 0x0011 && opcode != 0x1101)) {
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warning("Cannot find PICT version opcode");
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return false;
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} else if (opNum == 1 && _version == 2 && opcode != 0x0C00) {
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warning("Cannot find PICT header opcode");
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return false;
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}
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// Since opcodes are word-aligned, we need to mark our starting
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// position here.
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uint32 startPos = stream.pos();
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for (uint32 i = 0; i < _opcodes.size(); i++) {
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if (_opcodes[i].op == opcode) {
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debug(4, "Running PICT opcode %04x '%s'", opcode, _opcodes[i].desc);
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(this->*(_opcodes[i].proc))(stream);
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break;
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} else if (i == _opcodes.size() - 1) {
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// Unknown opcode; attempt to continue forward
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warning("Unknown PICT opcode %04x", opcode);
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}
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}
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// Align
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if (_version == 2)
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stream.skip((stream.pos() - startPos) & 1);
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}
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return _outputSurface;
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}
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PICTDecoder::PixMap PICTDecoder::readPixMap(Common::SeekableReadStream &stream, bool hasBaseAddr) {
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PixMap pixMap;
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pixMap.baseAddr = hasBaseAddr ? stream.readUint32BE() : 0;
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pixMap.rowBytes = stream.readUint16BE() & 0x7fff;
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pixMap.bounds.top = stream.readUint16BE();
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pixMap.bounds.left = stream.readUint16BE();
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pixMap.bounds.bottom = stream.readUint16BE();
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pixMap.bounds.right = stream.readUint16BE();
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pixMap.pmVersion = stream.readUint16BE();
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pixMap.packType = stream.readUint16BE();
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pixMap.packSize = stream.readUint32BE();
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pixMap.hRes = stream.readUint32BE();
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pixMap.vRes = stream.readUint32BE();
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pixMap.pixelType = stream.readUint16BE();
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pixMap.pixelSize = stream.readUint16BE();
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pixMap.cmpCount = stream.readUint16BE();
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pixMap.cmpSize = stream.readUint16BE();
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pixMap.planeBytes = stream.readUint32BE();
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pixMap.pmTable = stream.readUint32BE();
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pixMap.pmReserved = stream.readUint32BE();
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return pixMap;
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}
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struct PackBitsRectData {
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PICTDecoder::PixMap pixMap;
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Common::Rect srcRect;
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Common::Rect dstRect;
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uint16 mode;
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};
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void PICTDecoder::unpackBitsRect(Common::SeekableReadStream &stream, bool withPalette) {
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PackBitsRectData packBitsData;
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packBitsData.pixMap = readPixMap(stream, !withPalette);
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// Read in the palette if there is one present
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if (withPalette) {
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// See https://developer.apple.com/library/archive/documentation/mac/QuickDraw/QuickDraw-267.html
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stream.readUint32BE(); // seed
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stream.readUint16BE(); // flags
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_paletteColorCount = stream.readUint16BE() + 1;
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for (uint32 i = 0; i < _paletteColorCount; i++) {
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stream.readUint16BE();
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_palette[i * 3] = stream.readUint16BE() >> 8;
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_palette[i * 3 + 1] = stream.readUint16BE() >> 8;
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_palette[i * 3 + 2] = stream.readUint16BE() >> 8;
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}
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}
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packBitsData.srcRect.top = stream.readUint16BE();
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packBitsData.srcRect.left = stream.readUint16BE();
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packBitsData.srcRect.bottom = stream.readUint16BE();
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packBitsData.srcRect.right = stream.readUint16BE();
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packBitsData.dstRect.top = stream.readUint16BE();
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packBitsData.dstRect.left = stream.readUint16BE();
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packBitsData.dstRect.bottom = stream.readUint16BE();
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packBitsData.dstRect.right = stream.readUint16BE();
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packBitsData.mode = stream.readUint16BE();
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uint16 width = packBitsData.srcRect.width();
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uint16 height = packBitsData.srcRect.height();
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byte bytesPerPixel = 0;
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if (packBitsData.pixMap.pixelSize <= 8)
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bytesPerPixel = 1;
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else if (packBitsData.pixMap.pixelSize == 32)
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bytesPerPixel = packBitsData.pixMap.cmpCount;
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else
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bytesPerPixel = packBitsData.pixMap.pixelSize / 8;
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// Ensure we have enough space in the buffer to hold an entire line's worth of pixels
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uint32 lineSize = MAX<int>(width * bytesPerPixel + (8 * 2 / packBitsData.pixMap.pixelSize), packBitsData.pixMap.rowBytes);
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byte *buffer = new byte[lineSize * height]();
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// Read in amount of data per row
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for (uint16 i = 0; i < packBitsData.pixMap.bounds.height(); i++) {
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// NOTE: Compression 0 is "default". The format in SCI games is packed when 0
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// unless rowBytes is less than 8 in which case the pict can't be packed,
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// such as the shovel inventory icon in FPFP Mac. (bug #7059)
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// In the future, we may need to have something to set the "default" packing
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// format, but this is good for now.
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if (packBitsData.pixMap.packType == 1 || packBitsData.pixMap.rowBytes < 8) { // Unpacked, Pad-Byte (on 24-bit)
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// only support 1 bpp for now as there is currently only one known
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// SCI pict that requires any unpacked support.
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if (bytesPerPixel == 1 && packBitsData.pixMap.pixelSize == 8) {
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stream.read(&buffer[i * width], width);
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if (width < packBitsData.pixMap.rowBytes) {
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// skip padding and/or clipped bytes
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stream.seek(packBitsData.pixMap.rowBytes - width, SEEK_CUR);
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}
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} else {
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// TODO: Finish this. Hasn't been needed (yet).
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error("Unpacked DirectBitsRect data (padded) with bytes per pixel: %d and pixel size: %d", bytesPerPixel, packBitsData.pixMap.pixelSize);
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}
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} else if (packBitsData.pixMap.packType == 2) { // Unpacked, No Pad-Byte (on 24-bit)
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// TODO: Finish this. Hasn't been needed (yet).
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error("Unpacked DirectBitsRect data (not padded)");
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} else if (packBitsData.pixMap.packType == 0 || packBitsData.pixMap.packType > 2) { // Packed
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uint16 byteCount = (packBitsData.pixMap.rowBytes > 250) ? stream.readUint16BE() : stream.readByte();
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unpackBitsLine(buffer + i * width * bytesPerPixel, packBitsData.pixMap.rowBytes, stream.readStream(byteCount), packBitsData.pixMap.pixelSize, bytesPerPixel);
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}
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}
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_outputSurface = new Graphics::Surface();
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switch (bytesPerPixel) {
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case 1:
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// Just copy to the image
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_outputSurface->create(width, height, Graphics::PixelFormat::createFormatCLUT8());
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memcpy(_outputSurface->getPixels(), buffer, _outputSurface->w * _outputSurface->h);
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break;
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case 2:
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// We have a 16-bit surface
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_outputSurface->create(width, height, Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0));
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for (uint16 y = 0; y < _outputSurface->h; y++)
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for (uint16 x = 0; x < _outputSurface->w; x++)
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WRITE_UINT16(_outputSurface->getBasePtr(x, y), READ_UINT16(buffer + (y * _outputSurface->w + x) * 2));
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break;
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case 3:
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// We have a planar 24-bit surface
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_outputSurface->create(width, height, Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0));
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for (uint16 y = 0; y < _outputSurface->h; y++) {
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for (uint16 x = 0; x < _outputSurface->w; x++) {
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byte r = *(buffer + y * _outputSurface->w * 3 + x);
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byte g = *(buffer + y * _outputSurface->w * 3 + _outputSurface->w + x);
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byte b = *(buffer + y * _outputSurface->w * 3 + _outputSurface->w * 2 + x);
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*((uint32 *)_outputSurface->getBasePtr(x, y)) = _outputSurface->format.RGBToColor(r, g, b);
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}
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}
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break;
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case 4:
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// We have a planar 32-bit surface
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// Note that we ignore the alpha channel since it seems to not be correct
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// macOS does not ignore it, but then displays it incorrectly. Photoshop
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// does ignore it and displays it correctly.
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_outputSurface->create(width, height, Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0));
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for (uint16 y = 0; y < _outputSurface->h; y++) {
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for (uint16 x = 0; x < _outputSurface->w; x++) {
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byte a = 0xFF;
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byte r = *(buffer + y * _outputSurface->w * 4 + _outputSurface->w + x);
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byte g = *(buffer + y * _outputSurface->w * 4 + _outputSurface->w * 2 + x);
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byte b = *(buffer + y * _outputSurface->w * 4 + _outputSurface->w * 3 + x);
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*((uint32 *)_outputSurface->getBasePtr(x, y)) = _outputSurface->format.ARGBToColor(a, r, g, b);
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
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 withPalette) {
|
|
// Step through a PackBitsRect/DirectBitsRect function
|
|
|
|
if (!withPalette)
|
|
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 (withPalette) {
|
|
stream.readUint32BE();
|
|
stream.readUint16BE();
|
|
stream.skip((stream.readUint16BE() + 1) * 8);
|
|
}
|
|
|
|
rowBytes &= 0x7FFF;
|
|
} 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:
|
|
// https://developer.apple.com/library/archive/documentation/QuickTime/RM/CompressDecompress/ImageComprMgr/B-Chapter/2TheImageCompression.html
|
|
// https://developer.apple.com/library/archive/documentation/QuickTime/RM/CompressDecompress/ImageComprMgr/F-Chapter/6WorkingwiththeImage.html
|
|
void PICTDecoder::decodeCompressedQuickTime(Common::SeekableReadStream &stream) {
|
|
// First, read all the fields from the opcode
|
|
uint32 dataSize = stream.readUint32BE();
|
|
uint32 startPos = stream.pos();
|
|
|
|
/* uint16 version = */ stream.readUint16BE();
|
|
|
|
// Read in the display matrix
|
|
uint32 matrix[3][3];
|
|
for (uint32 i = 0; i < 3; i++)
|
|
for (uint32 j = 0; j < 3; j++)
|
|
matrix[i][j] = stream.readUint32BE();
|
|
|
|
// We currently only support offseting images vertically from the matrix
|
|
uint16 xOffset = 0;
|
|
uint16 yOffset = matrix[2][1] >> 16;
|
|
|
|
uint32 matteSize = stream.readUint32BE();
|
|
stream.skip(8); // matte rect
|
|
/* uint16 transferMode = */ stream.readUint16BE();
|
|
stream.skip(8); // src rect
|
|
/* uint32 accuracy = */ stream.readUint32BE();
|
|
uint32 maskSize = stream.readUint32BE();
|
|
|
|
// Skip the matte and mask
|
|
stream.skip(matteSize + maskSize);
|
|
|
|
// Now we've reached the image descriptor, so read the relevant data from that
|
|
uint32 idStart = stream.pos();
|
|
uint32 idSize = stream.readUint32BE();
|
|
uint32 codecTag = stream.readUint32BE();
|
|
stream.skip(24); // miscellaneous stuff
|
|
uint16 width = stream.readUint16BE();
|
|
uint16 height = stream.readUint16BE();
|
|
stream.skip(8); // resolution, dpi
|
|
uint32 imageSize = stream.readUint32BE();
|
|
stream.skip(34);
|
|
uint16 bitsPerPixel = stream.readUint16BE();
|
|
stream.skip(idSize - (stream.pos() - idStart)); // more useless stuff
|
|
|
|
Common::SeekableSubReadStream imageStream(&stream, stream.pos(), stream.pos() + imageSize);
|
|
|
|
Codec *codec = createQuickTimeCodec(codecTag, width, height, bitsPerPixel);
|
|
if (!codec)
|
|
error("Unhandled CompressedQuickTime format");
|
|
|
|
const Graphics::Surface *surface = codec->decodeFrame(imageStream);
|
|
|
|
if (!surface)
|
|
error("PICTDecoder::decodeCompressedQuickTime(): Could not decode data");
|
|
|
|
if (!_outputSurface) {
|
|
_outputSurface = new Graphics::Surface();
|
|
_outputSurface->create(_imageRect.width(), _imageRect.height(), surface->format);
|
|
}
|
|
assert(_outputSurface->format == surface->format);
|
|
|
|
Common::Rect outputRect(surface->w, surface->h);
|
|
outputRect.translate(xOffset, yOffset);
|
|
outputRect.clip(_imageRect);
|
|
|
|
for (uint16 y = 0; y < outputRect.height(); y++)
|
|
memcpy(_outputSurface->getBasePtr(outputRect.left, y + outputRect.top), surface->getBasePtr(0, y), outputRect.width() * surface->format.bytesPerPixel);
|
|
|
|
stream.seek(startPos + dataSize);
|
|
delete codec;
|
|
}
|
|
|
|
} // End of namespace Image
|