89 lines
2.1 KiB
C++
89 lines
2.1 KiB
C++
/*
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* This file is a part of Pcompress, a chunked parallel multi-
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* algorithm lossless compression and decompression program.
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*
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* Copyright (C) 2012-2013 Moinak Ghosh. All rights reserved.
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* Use is subject to license terms.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program.
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* If not, see <http://www.gnu.org/licenses/>.
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*
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* moinakg@belenix.org, http://moinakg.wordpress.com/
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*
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*/
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/*
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*/
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#include <sys/types.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <utils.h>
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#ifndef _MPLV2_LICENSE_
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#include <packpnmlib.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef unsigned char uchar_t;
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/* a short reminder about input/output stream types
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for the pjglib_init_streams() function
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if input is file
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----------------
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in_scr -> name of input file
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in_type -> 0
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in_size -> ignore
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if input is memory
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------------------
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in_scr -> array containg data
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in_type -> 1
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in_size -> size of data array
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if input is *FILE (f.e. stdin)
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------------------------------
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in_src -> stream pointer
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in_type -> 2
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in_size -> ignore
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vice versa for output streams! */
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/*
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* Helper routine to bridge to packPNM C++ lib, without changing packJPG itself.
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* packPNM has same API interface as packJPG. Just the function names are different.
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*/
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size_t
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packpnm_filter_process(uchar_t *in_buf, size_t len, uchar_t **out_buf)
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{
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unsigned int len1;
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ppnlib_init_streams(in_buf, 1, len, *out_buf, 1);
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len1 = len;
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if (!ppnlib_convert_stream2mem(out_buf, &len1, NULL))
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return (0);
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if (len1 == len)
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return (0);
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return (len1);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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