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Diffstat (limited to 'engines/scumm/smush/codec1.cpp')
-rw-r--r-- | engines/scumm/smush/codec1.cpp | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/engines/scumm/smush/codec1.cpp b/engines/scumm/smush/codec1.cpp new file mode 100644 index 0000000000..04d55e2ed7 --- /dev/null +++ b/engines/scumm/smush/codec1.cpp @@ -0,0 +1,62 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2002-2006 The ScummVM project + * + * 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 2 + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ + +#include "common/stdafx.h" +#include "common/scummsys.h" + +namespace Scumm { + +void smush_decode_codec1(byte *dst, const byte *src, int left, int top, int width, int height, int pitch) { + byte val, code; + int32 length; + int h = height, size_line; + + dst += top * pitch; + for (h = 0; h < height; h++) { + size_line = READ_LE_UINT16(src); + src += 2; + dst += left; + while (size_line > 0) { + code = *src++; + size_line--; + length = (code >> 1) + 1; + if (code & 1) { + val = *src++; + size_line--; + if (val) + memset(dst, val, length); + dst += length; + } else { + size_line -= length; + while (length--) { + val = *src++; + if (val) + *dst = val; + dst++; + } + } + } + dst += pitch - left - width; + } +} + +} // End of namespace Scumm |