74 lines
2.5 KiB
C++
74 lines
2.5 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 "mediastation/bitmap.h"
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#include "mediastation/debugchannels.h"
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namespace MediaStation {
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BitmapHeader::BitmapHeader(Chunk &chunk) {
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uint headerSizeInBytes = chunk.readTypedUint16();
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_dimensions = chunk.readTypedGraphicSize();
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_compressionType = static_cast<BitmapCompressionType>(chunk.readTypedUint16());
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_stride = chunk.readTypedUint16();
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debugC(5, kDebugLoading, "BitmapHeader::BitmapHeader(): headerSize: %d, _compressionType = 0x%x, _stride = %d",
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headerSizeInBytes, static_cast<uint>(_compressionType), _stride);
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}
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Bitmap::Bitmap(Chunk &chunk, BitmapHeader *bitmapHeader) : _bitmapHeader(bitmapHeader) {
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if (stride() < width()) {
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warning("%s: Got stride less than width", __func__);
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}
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_unk1 = chunk.readUint16LE();
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if (chunk.bytesRemaining() > 0) {
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if (isCompressed()) {
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_compressedStream = chunk.readStream(chunk.bytesRemaining());
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} else {
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_image.create(stride(), height(), Graphics::PixelFormat::createFormatCLUT8());
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if (getCompressionType() == kUncompressedTransparentBitmap)
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_image.setTransparentColor(0);
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byte *pixels = static_cast<byte *>(_image.getPixels());
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chunk.read(pixels, stride() * height());
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if (chunk.bytesRemaining() > 0) {
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warning("%s: %d bytes remaining in bitmap chunk after reading image data", __func__, chunk.bytesRemaining());
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chunk.skip(chunk.bytesRemaining());
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}
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}
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}
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}
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Bitmap::~Bitmap() {
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delete _bitmapHeader;
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_bitmapHeader = nullptr;
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delete _compressedStream;
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_compressedStream = nullptr;
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}
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bool Bitmap::isCompressed() const {
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return (getCompressionType() != kUncompressedBitmap) && \
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(getCompressionType() != kUncompressedTransparentBitmap);
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}
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} // End of namespace MediaStation
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