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Diffstat (limited to 'engines/bladerunner/slice_animations.cpp')
| -rw-r--r-- | engines/bladerunner/slice_animations.cpp | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/engines/bladerunner/slice_animations.cpp b/engines/bladerunner/slice_animations.cpp new file mode 100644 index 0000000000..b17e5173ae --- /dev/null +++ b/engines/bladerunner/slice_animations.cpp @@ -0,0 +1,173 @@ +/* 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 "bladerunner/slice_animations.h" + +#include "bladerunner/bladerunner.h" + +#include "common/debug.h" +#include "common/file.h" +#include "common/system.h" + +namespace BladeRunner { + +bool SliceAnimations::open(const Common::String &name) { + Common::File file; + if (!file.open(_vm->getResourceStream(name), name)) + return false; + + _timestamp = file.readUint32LE(); + _pageSize = file.readUint32LE(); + _pageCount = file.readUint32LE(); + _paletteCount = file.readUint32LE(); + + if (_timestamp != 0x3457b6f6) // Timestamp: Wed, 29 Oct 1997 22:21:42 GMT + return false; + + _palettes.resize(_paletteCount); + + for (uint32 i = 0; i != _paletteCount; ++i) { + for (uint32 j = 0; j != 256; ++j) { + uint8 color_r = file.readByte(); + uint8 color_g = file.readByte(); + uint8 color_b = file.readByte(); + + uint16 rgb555 = ((uint16)color_r << 10) | + ((uint16)color_g << 5) | + (uint16)color_b; + + _palettes[i][j] = rgb555; + } + } + + uint32 animationCount = file.readUint32LE(); + _animations.resize(animationCount); + + for (uint32 i = 0; i != animationCount; ++i) { + _animations[i].frameCount = file.readUint32LE(); + _animations[i].frameSize = file.readUint32LE(); + _animations[i].fps = file.readFloatLE(); + _animations[i].unk0 = file.readFloatLE(); + _animations[i].unk1 = file.readFloatLE(); + _animations[i].unk2 = file.readFloatLE(); + _animations[i].unk3 = file.readFloatLE(); + _animations[i].offset = file.readUint32LE(); + +#if 0 + debug("%4d %6d %6x %7.2g %7.2g %7.2g %7.2g %7.2g %8x", + i, + _animations[i].frameCount, + _animations[i].frameSize, + _animations[i].fps, + _animations[i].unk0, + _animations[i].unk1, + _animations[i].unk2, + _animations[i].unk3, + _animations[i].offset); +#endif + } + + _pages.resize(_pageCount); + for (uint32 i = 0; i != _pageCount; ++i) + _pages[i]._data = nullptr; + + return true; +} + +SliceAnimations::~SliceAnimations() { + for (uint32 i = 0; i != _pageCount; ++i) + free(_pages[i]._data); +} + +bool SliceAnimations::openCoreAnim() { + return _coreAnimPageFile.open("COREANIM.DAT"); +} + +bool SliceAnimations::openHDFrames() { + return _framesPageFile.open("HDFRAMES.DAT"); +} + +bool SliceAnimations::PageFile::open(const Common::String &name) { + if (!_file.open(name)) + return false; + + uint32 timestamp = _file.readUint32LE(); + if (timestamp != _sliceAnimations->_timestamp) + return false; + + _pageOffsets.resize(_sliceAnimations->_pageCount); + for (uint32 i = 0; i != _sliceAnimations->_pageCount; ++i) + _pageOffsets[i] = -1; + + uint32 pageCount = _file.readUint32LE(); + uint32 dataOffset = 8 + 4 * pageCount; + + for (uint32 i = 0; i != pageCount; ++i) { + uint32 pageNumber = _file.readUint32LE(); + if (pageNumber == 0xffffffff) + continue; + _pageOffsets[pageNumber] = dataOffset + i * _sliceAnimations->_pageSize; + } + + debug("PageFile::Open: page file \"%s\" opened with %d pages", name.c_str(), pageCount); + + return true; +} + +void *SliceAnimations::PageFile::loadPage(uint32 pageNumber) { + if (_pageOffsets[pageNumber] == -1) + return nullptr; + + uint32 pageSize = _sliceAnimations->_pageSize; + + // TODO: Retire oldest pages if we exceed some memory limit + + void *data = malloc(pageSize); + _file.seek(_pageOffsets[pageNumber], SEEK_SET); + uint32 r = _file.read(data, pageSize); + assert(r == pageSize); + + return data; +} + +void *SliceAnimations::getFramePtr(uint32 animation, uint32 frame) { + assert(frame < _animations[animation].frameCount); + + uint32 frameOffset = _animations[animation].offset + frame * _animations[animation].frameSize; + uint32 page = frameOffset / _pageSize; + uint32 pageOffset = frameOffset % _pageSize; + + if (!_pages[page]._data) + _pages[page]._data = _coreAnimPageFile.loadPage(page); + + if (!_pages[page]._data) + _pages[page]._data = _framesPageFile.loadPage(page); + + if (!_pages[page]._data) + error("Unable to locate page %d for animation %d frame %d", page, animation, frame); + + _pages[page]._lastAccess = _vm->_system->getMillis(); + + return (byte*)_pages[page]._data + pageOffset; +} + +} // End of namespace BladeRunner |