1 files changed, 65 insertions, 73 deletions

diff --git a/common/macresman.cpp b/common/macresman.cpp
index 4fd4e72ee3..e7d4a30789 100644
--- a/common/macresman.cpp
+++ b/common/macresman.cpp
@@ -550,118 +550,110 @@ void MacResManager::readMap() {
 	}
 }
 
-void MacResManager::convertCrsrCursor(byte *data, int datasize, byte **cursor, int *w, int *h,
-				int *hotspot_x, int *hotspot_y, int *keycolor, bool colored, byte **palette, int *palSize) {
-	MemoryReadStream dis(data, datasize);
-	int i, b;
-	byte imageByte;
-	byte *iconData;
-	int pixelsPerByte, bpp;
-	int ctSize;
-	byte bitmask;
-	int iconRowBytes, iconBounds[4];
-	int iconDataSize;
-
-	dis.readUint16BE(); // type
-	dis.readUint32BE(); // offset to pixel map
-	dis.readUint32BE(); // offset to pixel data
-	dis.readUint32BE(); // expanded cursor data
-	dis.readUint16BE(); // expanded data depth
-	dis.readUint32BE(); // reserved
+void MacResManager::convertCrsrCursor(SeekableReadStream *data, byte **cursor, int &w, int &h, int &hotspotX,
+			int &hotspotY, int &keycolor, bool colored, byte **palette, int &palSize) {
+
+	data->readUint16BE(); // type
+	data->readUint32BE(); // offset to pixel map
+	data->readUint32BE(); // offset to pixel data
+	data->readUint32BE(); // expanded cursor data
+	data->readUint16BE(); // expanded data depth
+	data->readUint32BE(); // reserved
 
 	// Grab B/W icon data
-	*cursor = (byte *)malloc(16 * 16);
-	for (i = 0; i < 32; i++) {
-		imageByte = dis.readByte();
-		for (b = 0; b < 8; b++)
-			cursor[0][i*8+b] = (byte)((imageByte & (0x80 >> b)) > 0? 0x0F: 0x00);
+	*cursor = new byte[16 * 16];
+	for (int i = 0; i < 32; i++) {
+		byte imageByte = data->readByte();
+		for (int b = 0; b < 8; b++)
+			cursor[0][i * 8 + b] = (byte)((imageByte & (0x80 >> b)) > 0 ? 0x0F : 0x00);
 	}
 
 	// Apply mask data
-	for (i = 0; i < 32; i++) {
-		imageByte = dis.readByte();
-		for (b = 0; b < 8; b++)
+	for (int i = 0; i < 32; i++) {
+		byte imageByte = data->readByte();
+		for (int b = 0; b < 8; b++)
 			if ((imageByte & (0x80 >> b)) == 0)
-				cursor[0][i*8+b] = 0xff;
+				cursor[0][i * 8 + b] = 0xff;
 	}
 
-	*hotspot_y = dis.readUint16BE();
-	*hotspot_x = dis.readUint16BE();
-	*w = *h = 16;
-	*keycolor = 0xff;
+	hotspotY = data->readUint16BE();
+	hotspotX = data->readUint16BE();
+	w = h = 16;
+	keycolor = 0xff;
 
 	// Use b/w cursor on backends which don't support cursor palettes
 	if (!colored)
 		return;
 
-	dis.readUint32BE(); // reserved
-	dis.readUint32BE(); // cursorID
+	data->readUint32BE(); // reserved
+	data->readUint32BE(); // cursorID
 
 	// Color version of cursor
-	dis.readUint32BE(); // baseAddr
+	data->readUint32BE(); // baseAddr
 
 	// Keep only lowbyte for now
-	dis.readByte();
-	iconRowBytes = dis.readByte();
+	data->readByte();
+	int iconRowBytes = data->readByte();
 
 	if (!iconRowBytes)
 		return;
 
-	iconBounds[0] = dis.readUint16BE();
-	iconBounds[1] = dis.readUint16BE();
-	iconBounds[2] = dis.readUint16BE();
-	iconBounds[3] = dis.readUint16BE();
+	int iconBounds[4];
+	iconBounds[0] = data->readUint16BE();
+	iconBounds[1] = data->readUint16BE();
+	iconBounds[2] = data->readUint16BE();
+	iconBounds[3] = data->readUint16BE();
 
-	dis.readUint16BE(); // pmVersion
-	dis.readUint16BE(); // packType
-	dis.readUint32BE(); // packSize
+	data->readUint16BE(); // pmVersion
+	data->readUint16BE(); // packType
+	data->readUint32BE(); // packSize
 
-	dis.readUint32BE(); // hRes
-	dis.readUint32BE(); // vRes
+	data->readUint32BE(); // hRes
+	data->readUint32BE(); // vRes
 
-	dis.readUint16BE(); // pixelType
-	dis.readUint16BE(); // pixelSize
-	dis.readUint16BE(); // cmpCount
-	dis.readUint16BE(); // cmpSize
+	data->readUint16BE(); // pixelType
+	data->readUint16BE(); // pixelSize
+	data->readUint16BE(); // cmpCount
+	data->readUint16BE(); // cmpSize
 
-	dis.readUint32BE(); // planeByte
-	dis.readUint32BE(); // pmTable
-	dis.readUint32BE(); // reserved
+	data->readUint32BE(); // planeByte
+	data->readUint32BE(); // pmTable
+	data->readUint32BE(); // reserved
 
 	// Pixel data for cursor
-	iconDataSize =  iconRowBytes * (iconBounds[3] - iconBounds[1]);
-	iconData = (byte *)malloc(iconDataSize);
-	dis.read(iconData, iconDataSize);
+	int iconDataSize =  iconRowBytes * (iconBounds[3] - iconBounds[1]);
+	byte *iconData = new byte[iconDataSize];
+	data->read(iconData, iconDataSize);
 
 	// Color table
-	dis.readUint32BE(); // ctSeed
-	dis.readUint16BE(); // ctFlag
-	ctSize = dis.readUint16BE() + 1;
+	data->readUint32BE(); // ctSeed
+	data->readUint16BE(); // ctFlag
+	uint16 ctSize = data->readUint16BE() + 1;
 
-	*palette = (byte *)malloc(ctSize * 3);
+	*palette = new byte[ctSize * 3];
 
 	// Read just high byte of 16-bit color
 	for (int c = 0; c < ctSize; c++) {
 		// We just use indices 0..ctSize, so ignore color ID
-		dis.readUint16BE(); // colorID[c]
+		data->readUint16BE(); // colorID[c]
 
-		palette[0][c * 3 + 0] = dis.readByte();
-		dis.readByte();
+		palette[0][c * 3 + 0] = data->readByte();
+		data->readByte();
 
-		palette[0][c * 3 + 1] = dis.readByte();
-		dis.readByte();
+		palette[0][c * 3 + 1] = data->readByte();
+		data->readByte();
 
-		palette[0][c * 3 + 2] = dis.readByte();
-		dis.readByte();
+		palette[0][c * 3 + 2] = data->readByte();
+		data->readByte();
 	}
 
-	*palSize = ctSize;
+	palSize = ctSize;
 
-	pixelsPerByte = (iconBounds[2] - iconBounds[0]) / iconRowBytes;
-	bpp           = 8 / pixelsPerByte;
+	int pixelsPerByte = (iconBounds[2] - iconBounds[0]) / iconRowBytes;
+	int bpp           = 8 / pixelsPerByte;
 
 	// build a mask to make sure the pixels are properly shifted out
-	bitmask = 0;
+	int bitmask = 0;
 	for (int m = 0; m < bpp; m++) {
 		bitmask <<= 1;
 		bitmask  |= 1;
@@ -669,16 +661,16 @@ void MacResManager::convertCrsrCursor(byte *data, int datasize, byte **cursor, i
 
 	// Extract pixels from bytes
 	for (int j = 0; j < iconDataSize; j++)
-		for (b = 0; b < pixelsPerByte; b++) {
+		for (int b = 0; b < pixelsPerByte; b++) {
 			int idx = j * pixelsPerByte + (pixelsPerByte - 1 - b);
 
 			if (cursor[0][idx] != 0xff) // if mask is not there
 				cursor[0][idx] = (byte)((iconData[j] >> (b * bpp)) & bitmask);
 		}
 
-	free(iconData);
+	delete[] iconData;
 
-	assert(datasize - dis.pos() == 0);
+	assert(data->size() - data->pos() == 0);
 }
 
 } // End of namespace Common