Extended the IFF parser to handle 1 and 5 bits deep images.

svn-id: r39583

2 files changed, 11 insertions, 5 deletions

diff --git a/engines/parallaction/iff.cpp b/engines/parallaction/iff.cpp
index 6812fc567e..c48b12f888 100644
--- a/engines/parallaction/iff.cpp
+++ b/engines/parallaction/iff.cpp
@@ -161,10 +161,10 @@ byte *ILBMDecoder::getPalette() {
 
 byte *ILBMDecoder::getBitmap(uint32 numPlanes, bool packPlanes) {
 	assert(_bodySize != (uint32)-1);
-	assert(numPlanes == 2 || numPlanes == 4 || numPlanes == 8);
+	assert(numPlanes == 1 || numPlanes == 2 || numPlanes == 4 || numPlanes == 5 || numPlanes == 8);
 
 	numPlanes = MIN(numPlanes, (uint32)_header.depth);
-	if (numPlanes == 8) {
+	if (numPlanes > 4) {
 		packPlanes = false;
 	}
 
@@ -246,6 +246,9 @@ void ILBMDecoder::planarToChunky(byte *out, uint32 width, byte *in, uint32 plane
 		if (!packPlanes) {
 			out[x] = pix;
 		} else
+		if (nPlanes == 1) {
+			out[x/8] |= (pix << (x & 7));
+		} else
 		if (nPlanes == 2) {
 			out[x/4] |= (pix << ((x & 3) << 1));
 		} else
diff --git a/engines/parallaction/iff.h b/engines/parallaction/iff.h
index 23b8fbe1d7..6edd28a17f 100644
--- a/engines/parallaction/iff.h
+++ b/engines/parallaction/iff.h
@@ -64,14 +64,17 @@ private:
 
 class ILBMDecoder {
 	Common::SeekableReadStream *_in;
-	IFFParser 		_parser;
+	bool _disposeStream;
+
+	void planarToChunky(byte *out, uint32 width, byte *in, uint32 planeWidth, uint32 nPlanes, bool packPlanes);
+
+protected:
+	IFFParser 	_parser;
 	Graphics::BMHD 	_header;
 	bool	_hasHeader;
 	uint32	_bodySize;
 	uint32	_paletteSize;
-	bool _disposeStream;
 
-	void planarToChunky(byte *out, uint32 width, byte *in, uint32 planeWidth, uint32 nPlanes, bool packPlanes);
 
 public:
 	ILBMDecoder(Common::SeekableReadStream *input, bool disposeStream = false);