X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b47c832e5529dc6c632536b4665a005f0a85aec8..e7c6f5a17f8f75f9eaad227e0134020ba44fc9d9:/src/tiff/tif_compress.c

diff --git a/src/tiff/tif_compress.c b/src/tiff/tif_compress.c
index 10e5e9ffe3..dbc73c6f50 100644
--- a/src/tiff/tif_compress.c
+++ b/src/tiff/tif_compress.c
@@ -36,13 +36,21 @@ TIFFNoEncode(TIFF* tif, char* method)
 {
 	const TIFFCodec* c = TIFFFindCODEC(tif->tif_dir.td_compression);
 
-	if (c)
-		TIFFError(tif->tif_name, "%s %s encoding is not implemented",
-		    c->name, method);
-	else
+	if (c) { 
+	  if (! strncmp(c->name, "LZW", 3) ){ 
+	    TIFFError(tif->tif_name, 
+		      "%s %s encoding is no longer implemented due to Unisys patent enforcement", 
+		      c->name, method); 
+	  } else { 
+	    TIFFError(tif->tif_name, "%s %s encoding is not implemented",
+		      c->name, method);
+	  }
+	}
+	else { 
 		TIFFError(tif->tif_name,
-		    "Compression scheme %u %s encoding is not implemented",
+			  "Compression scheme %u %s encoding is not implemented",
 		    tif->tif_dir.td_compression, method);
+	}
 	return (-1);
 }
 
@@ -125,11 +133,13 @@ static void _TIFFvoid(TIFF* tif) { (void) tif; }
 void
 _TIFFSetDefaultCompressionState(TIFF* tif)
 {
+	tif->tif_decodestatus = TRUE;
 	tif->tif_setupdecode = _TIFFtrue;
 	tif->tif_predecode = _TIFFNoPreCode;
 	tif->tif_decoderow = _TIFFNoRowDecode;
 	tif->tif_decodestrip = _TIFFNoStripDecode;
 	tif->tif_decodetile = _TIFFNoTileDecode;
+	tif->tif_encodestatus = TRUE;
 	tif->tif_setupencode = _TIFFtrue;
 	tif->tif_preencode = _TIFFNoPreCode;
 	tif->tif_postencode = _TIFFtrue;
@@ -147,7 +157,7 @@ _TIFFSetDefaultCompressionState(TIFF* tif)
 int
 TIFFSetCompressionScheme(TIFF* tif, int scheme)
 {
-	const TIFFCodec *c = TIFFFindCODEC(scheme);
+	const TIFFCodec *c = TIFFFindCODEC((uint16) scheme);
 
 	_TIFFSetDefaultCompressionState(tif);
 	/*
@@ -200,9 +210,11 @@ TIFFRegisterCODEC(uint16 scheme, const char* name, TIFFInitMethod init)
 		cd->info->init = init;
 		cd->next = registeredCODECS;
 		registeredCODECS = cd;
-	} else
+	} else {
 		TIFFError("TIFFRegisterCODEC",
 		    "No space to register compression scheme %s", name);
+		return NULL;
+	}
 	return (cd->info);
 }