Initial commit

engines/mediastation/bitmap.cpp

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+/* 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mediastation/bitmap.h"
+#include "mediastation/debugchannels.h"
+
+namespace MediaStation {
+
+BitmapHeader::BitmapHeader(Chunk &chunk) {
+	uint headerSizeInBytes = chunk.readTypedUint16();
+	_dimensions = chunk.readTypedGraphicSize();
+	_compressionType = static_cast<BitmapCompressionType>(chunk.readTypedUint16());
+	_stride = chunk.readTypedUint16();
+	debugC(5, kDebugLoading, "BitmapHeader::BitmapHeader(): headerSize: %d, _compressionType = 0x%x, _stride = %d",
+		headerSizeInBytes, static_cast<uint>(_compressionType), _stride);
+}
+
+Bitmap::Bitmap(Chunk &chunk, BitmapHeader *bitmapHeader) : _bitmapHeader(bitmapHeader) {
+	if (stride() < width()) {
+		warning("%s: Got stride less than width", __func__);
+	}
+
+	_unk1 = chunk.readUint16LE();
+	if (chunk.bytesRemaining() > 0) {
+		if (isCompressed()) {
+			_compressedStream = chunk.readStream(chunk.bytesRemaining());
+		} else {
+			_image.create(stride(), height(), Graphics::PixelFormat::createFormatCLUT8());
+			if (getCompressionType() == kUncompressedTransparentBitmap)
+				_image.setTransparentColor(0);
+			byte *pixels = static_cast<byte *>(_image.getPixels());
+
+			chunk.read(pixels, stride() * height());
+			if (chunk.bytesRemaining() > 0) {
+				warning("%s: %d bytes remaining in bitmap chunk after reading image data", __func__, chunk.bytesRemaining());
+				chunk.skip(chunk.bytesRemaining());
+			}
+		}
+	}
+}
+
+Bitmap::~Bitmap() {
+	delete _bitmapHeader;
+	_bitmapHeader = nullptr;
+
+	delete _compressedStream;
+	_compressedStream = nullptr;
+}
+
+bool Bitmap::isCompressed() const {
+	return (getCompressionType() != kUncompressedBitmap) && \
+		(getCompressionType() != kUncompressedTransparentBitmap);
+}
+
+} // End of namespace MediaStation