mirror of https://github.com/opencv/opencv.git
This patch implements the PAM image format as defined at: http://netpbm.sourceforge.net/doc/pam.html The PAM format provides a generic means for storing 2 dimensional information. This is useful for opencv since there are cases where data gets translated into non standardized formats, which makes it difficult to store and load this information.pull/7064/head
Dimitrios Katsaros
8 years ago
parent
ce05d6cb89
commit
6172803012
6 changed files with 843 additions and 2 deletions
@ -0,0 +1,719 @@ |
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/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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// (3-clause BSD License)
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//
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// Copyright (C) 2000-2016, Intel Corporation, all rights reserved.
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// Copyright (C) 2009-2011, Willow Garage Inc., all rights reserved.
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// Copyright (C) 2009-2016, NVIDIA Corporation, all rights reserved.
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// Copyright (C) 2010-2013, Advanced Micro Devices, Inc., all rights reserved.
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// Copyright (C) 2015-2016, OpenCV Foundation, all rights reserved.
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// Copyright (C) 2015-2016, Itseez Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * Neither the names of the copyright holders nor the names of the contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall copyright holders or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include <cerrno> |
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#include "precomp.hpp" |
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#include "utils.hpp" |
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#include "grfmt_pam.hpp" |
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/* the PAM related fields */ |
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#define MAX_PAM_HEADER_IDENITFIER_LENGTH 8 |
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#define MAX_PAM_HEADER_VALUE_LENGTH 255 |
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/* PAM header fileds */ |
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typedef enum { |
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PAM_HEADER_NONE, |
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PAM_HEADER_COMMENT, |
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PAM_HEADER_ENDHDR, |
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PAM_HEADER_HEIGHT, |
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PAM_HEADER_WIDTH, |
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PAM_HEADER_DEPTH, |
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PAM_HEADER_MAXVAL, |
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PAM_HEADER_TUPLTYPE, |
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} PamHeaderFieldType; |
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struct pam_header_field { |
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PamHeaderFieldType type; |
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char identifier[MAX_PAM_HEADER_IDENITFIER_LENGTH+1]; |
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}; |
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const static struct pam_header_field fields[] = { |
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{PAM_HEADER_ENDHDR, "ENDHDR"}, |
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{PAM_HEADER_HEIGHT, "HEIGHT"}, |
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{PAM_HEADER_WIDTH, "WIDTH"}, |
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{PAM_HEADER_DEPTH, "DEPTH"}, |
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{PAM_HEADER_MAXVAL, "MAXVAL"}, |
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{PAM_HEADER_TUPLTYPE, "TUPLTYPE"}, |
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}; |
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#define PAM_FIELDS_NO (sizeof (fields) / sizeof ((fields)[0])) |
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typedef bool (*cvtFunc) (void *src, void *target, int width, int target_channels, |
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int target_depth); |
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struct channel_layout { |
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uint rchan, gchan, bchan, graychan; |
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}; |
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struct pam_format { |
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uint fmt; |
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char name[MAX_PAM_HEADER_VALUE_LENGTH+1]; |
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cvtFunc cvt_func; |
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/* the channel layout that should be used when
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* imread_ creates a 3 channel or 1 channel image |
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* used when no conversion function is available |
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*/ |
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struct channel_layout layout; |
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}; |
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static bool rgb_convert (void *src, void *target, int width, int target_channels, |
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int target_depth); |
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const static struct pam_format formats[] = { |
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{CV_IMWRITE_PAM_FORMAT_NULL, "", NULL, {0, 0, 0, 0} }, |
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{CV_IMWRITE_PAM_FORMAT_BLACKANDWHITE, "BLACKANDWHITE", NULL, {0, 0, 0, 0} }, |
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{CV_IMWRITE_PAM_FORMAT_GRAYSCALE, "GRAYSCALE", NULL, {0, 0, 0, 0} }, |
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{CV_IMWRITE_PAM_FORMAT_GRAYSCALE_ALPHA, "GRAYSCALE_ALPHA", NULL, {0, 0, 0, 0} }, |
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{CV_IMWRITE_PAM_FORMAT_RGB, "RGB", rgb_convert, {0, 1, 2, 0} }, |
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{CV_IMWRITE_PAM_FORMAT_RGB_ALPHA, "RGB_ALPHA", NULL, {0, 1, 2, 0} }, |
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}; |
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#define PAM_FORMATS_NO (sizeof (fields) / sizeof ((fields)[0])) |
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/*
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* conversion functions |
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*/ |
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static bool |
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rgb_convert (void *src, void *target, int width, int target_channels, int target_depth) |
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{ |
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bool ret = false; |
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if (target_channels == 3) { |
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switch (target_depth) { |
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case CV_8U: |
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icvCvt_RGB2BGR_8u_C3R( (uchar*) src, 0, (uchar*) target, 0, |
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cvSize(width,1) ); |
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ret = true; |
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break; |
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case CV_16U: |
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icvCvt_RGB2BGR_16u_C3R( (ushort *)src, 0, (ushort *)target, 0, |
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cvSize(width,1) ); |
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ret = true; |
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break; |
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default: |
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break; |
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} |
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} else if (target_channels == 1) { |
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switch (target_depth) { |
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case CV_8U: |
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icvCvt_BGR2Gray_8u_C3C1R( (uchar*) src, 0, (uchar*) target, 0, |
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cvSize(width,1), 2 ); |
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ret = true; |
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break; |
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case CV_16U: |
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icvCvt_BGRA2Gray_16u_CnC1R( (ushort *)src, 0, (ushort *)target, 0, |
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cvSize(width,1), 3, 2 ); |
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ret = true; |
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break; |
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default: |
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break; |
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} |
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} |
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return ret; |
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} |
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/*
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* copy functions used as a fall back for undefined formats |
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* or simpler conversion options |
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*/ |
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static void |
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basic_conversion (void *src, const struct channel_layout *layout, int src_sampe_size, |
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int src_width, void *target, int target_channels, int target_depth) |
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{ |
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switch (target_depth) { |
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case CV_8U: |
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{ |
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uchar *d = (uchar *)target, *s = (uchar *)src, |
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*end = ((uchar *)src) + src_width; |
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switch (target_channels) { |
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case 1: |
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for( ; s < end; d += 3, s += src_sampe_size ) |
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d[0] = d[1] = d[2] = s[layout->graychan]; |
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break; |
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case 3: |
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for( ; s < end; d += 3, s += src_sampe_size ) { |
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d[0] = s[layout->bchan]; |
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d[1] = s[layout->gchan]; |
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d[2] = s[layout->rchan]; |
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} |
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break; |
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default: |
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assert (0); |
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} |
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break; |
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} |
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case CV_16U: |
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{ |
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ushort *d = (ushort *)target, *s = (ushort *)src, |
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*end = ((ushort *)src) + src_width; |
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switch (target_channels) { |
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case 1: |
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for( ; s < end; d += 3, s += src_sampe_size ) |
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d[0] = d[1] = d[2] = s[layout->graychan]; |
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break; |
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case 3: |
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for( ; s < end; d += 3, s += src_sampe_size ) { |
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d[0] = s[layout->bchan]; |
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d[1] = s[layout->gchan]; |
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d[2] = s[layout->rchan]; |
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} |
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break; |
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default: |
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assert (0); |
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} |
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break; |
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} |
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default: |
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assert (0); |
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} |
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} |
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static bool ReadPAMHeaderLine (cv::RLByteStream& strm, |
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PamHeaderFieldType &fieldtype, |
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char value[MAX_PAM_HEADER_VALUE_LENGTH+1]) |
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{ |
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int code, pos; |
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bool ident_found = false; |
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uint i; |
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char ident[MAX_PAM_HEADER_IDENITFIER_LENGTH+1] = { 0 }; |
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do { |
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code = strm.getByte(); |
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} while ( isspace(code) ); |
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if (code == '#') { |
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/* we are in a comment, eat characters until linebreak */ |
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do |
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{ |
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code = strm.getByte(); |
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} while( code != '\n' && code != '\r' ); |
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fieldtype = PAM_HEADER_COMMENT; |
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return true; |
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} else if (code == '\n' || code == '\r' ) { |
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fieldtype = PAM_HEADER_NONE; |
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return true; |
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} |
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/* nul-ify buffers before writing to them */ |
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memset (ident, '\0', sizeof(char) * MAX_PAM_HEADER_IDENITFIER_LENGTH); |
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for (i=0; i<MAX_PAM_HEADER_IDENITFIER_LENGTH; i++) { |
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if (!isspace(code)) |
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ident[i] = (char) code; |
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else |
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break; |
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code = strm.getByte(); |
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} |
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/* we may have filled the buffer and still have data */ |
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if (!isspace(code)) |
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return false; |
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for (i=0; i<PAM_FIELDS_NO; i++) { |
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if (strncmp(fields[i].identifier, ident, MAX_PAM_HEADER_IDENITFIER_LENGTH+1) == 0) { |
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fieldtype = fields[i].type; |
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ident_found = true; |
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} |
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} |
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if (!ident_found) |
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return false; |
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memset (value, '\0', sizeof(char) * MAX_PAM_HEADER_VALUE_LENGTH); |
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/* we may have an identifier that has no value */ |
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if (code == '\n' || code == '\r') |
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return true; |
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do { |
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code = strm.getByte(); |
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} while ( isspace(code) ); |
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/* read identifier value */ |
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for (i=0; i<MAX_PAM_HEADER_VALUE_LENGTH; i++) { |
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if (code != '\n' && code != '\r') { |
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value[i] = (char) code; |
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} else if (code != '\n' || code != '\r') |
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break; |
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code = strm.getByte(); |
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} |
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pos = i; |
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/* should be terminated */ |
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if (code != '\n' && code != '\r') |
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return false; |
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/* remove trailing white spaces */ |
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while (pos >= 0 && isspace(value[pos])) |
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value[pos--] = '\0'; |
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return true; |
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} |
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static bool ParseNumber (char *str, int *retval) |
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{ |
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char *endptr; |
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long lval = strtol (str, &endptr, 0); |
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if ((errno == ERANGE && (lval == LONG_MAX || lval == LONG_MIN)) |
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|| (errno != 0 && lval == 0)) { |
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return false; |
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} |
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if (endptr == str) { |
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return false; |
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} |
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*retval = (int) lval; |
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return true; |
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} |
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namespace cv |
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{ |
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PAMDecoder::PAMDecoder() |
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{ |
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m_offset = -1; |
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m_buf_supported = true; |
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bit_mode = false; |
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selected_fmt = CV_IMWRITE_PAM_FORMAT_NULL; |
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} |
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PAMDecoder::~PAMDecoder() |
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{ |
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m_strm.close(); |
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} |
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size_t PAMDecoder::signatureLength() const |
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{ |
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return 3; |
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} |
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bool PAMDecoder::checkSignature( const String& signature ) const |
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{ |
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return signature.size() >= 3 && signature[0] == 'P' && |
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signature[1] == '7' && |
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isspace(signature[2]); |
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} |
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ImageDecoder PAMDecoder::newDecoder() const |
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{ |
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return makePtr<PAMDecoder>(); |
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} |
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struct parsed_fields |
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{ |
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bool endhdr, height, width, depth, maxval; |
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}; |
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#define HEADER_READ_CORRECT(pf) (pf.endhdr && pf.height && pf.width \ |
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&& pf.depth && pf.maxval) |
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bool PAMDecoder::readHeader() |
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{ |
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PamHeaderFieldType fieldtype = PAM_HEADER_NONE; |
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char value[MAX_PAM_HEADER_VALUE_LENGTH+1]; |
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int byte; |
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struct parsed_fields flds; |
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if( !m_buf.empty() ) |
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{ |
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if( !m_strm.open(m_buf) ) |
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return false; |
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} |
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else if( !m_strm.open( m_filename )) |
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return false; |
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try |
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{ |
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byte = m_strm.getByte(); |
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if( byte != 'P' ) |
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throw RBS_BAD_HEADER; |
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byte = m_strm.getByte(); |
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if (byte != '7') |
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throw RBS_BAD_HEADER; |
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byte = m_strm.getByte(); |
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if (byte != '\n' && byte != '\r') |
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throw RBS_BAD_HEADER; |
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uint i; |
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memset (&flds, 0x00, sizeof (struct parsed_fields)); |
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do { |
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if (!ReadPAMHeaderLine(m_strm, fieldtype, value)) |
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throw RBS_BAD_HEADER; |
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switch (fieldtype) { |
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case PAM_HEADER_NONE: |
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case PAM_HEADER_COMMENT: |
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continue; |
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case PAM_HEADER_ENDHDR: |
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flds.endhdr = true; |
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break; |
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case PAM_HEADER_HEIGHT: |
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if (flds.height) |
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throw RBS_BAD_HEADER; |
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if (!ParseNumber (value, &m_height)) |
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throw RBS_BAD_HEADER; |
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flds.height = true; |
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break; |
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case PAM_HEADER_WIDTH: |
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if (flds.width) |
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throw RBS_BAD_HEADER; |
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if (!ParseNumber (value, &m_width)) |
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throw RBS_BAD_HEADER; |
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flds.width = true; |
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break; |
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case PAM_HEADER_DEPTH: |
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if (flds.depth) |
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throw RBS_BAD_HEADER; |
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if (!ParseNumber (value, &m_channels)) |
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throw RBS_BAD_HEADER; |
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flds.depth = true; |
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break; |
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case PAM_HEADER_MAXVAL: |
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if (flds.maxval) |
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throw RBS_BAD_HEADER; |
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if (!ParseNumber (value, &m_maxval)) |
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throw RBS_BAD_HEADER; |
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if ( m_maxval > 65535 ) |
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throw RBS_BAD_HEADER; |
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if ( m_maxval > 255 ) { |
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m_sampledepth = CV_16U; |
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} |
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else |
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m_sampledepth = CV_8U; |
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if (m_maxval == 1) |
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bit_mode = true; |
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flds.maxval = true; |
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break; |
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case PAM_HEADER_TUPLTYPE: |
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for (i=0; i<PAM_FORMATS_NO; i++) { |
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if (strncmp(formats[i].name, |
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value, MAX_PAM_HEADER_VALUE_LENGTH+1) == 0) { |
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selected_fmt = formats[i].fmt; |
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} |
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} |
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break; |
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default: |
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throw RBS_BAD_HEADER; |
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} |
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} while (fieldtype != PAM_HEADER_ENDHDR); |
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if (HEADER_READ_CORRECT(flds)) { |
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if (selected_fmt == CV_IMWRITE_PAM_FORMAT_NULL) { |
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if (m_channels == 1 && m_maxval == 1) |
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selected_fmt = CV_IMWRITE_PAM_FORMAT_BLACKANDWHITE; |
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else if (m_channels == 1 && m_maxval < 256) |
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selected_fmt = CV_IMWRITE_PAM_FORMAT_GRAYSCALE; |
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else if (m_channels == 3 && m_maxval < 256) |
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selected_fmt = CV_IMWRITE_PAM_FORMAT_RGB; |
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} |
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m_type = CV_MAKETYPE(m_sampledepth, m_channels); |
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m_offset = m_strm.getPos(); |
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return true; |
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} |
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} catch(...) |
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{ |
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} |
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m_offset = -1; |
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m_width = m_height = -1; |
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m_strm.close(); |
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return false; |
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} |
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bool PAMDecoder::readData( Mat& img ) |
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{ |
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uchar* data = img.ptr(); |
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int target_channels = img.channels(); |
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int imp_stride = (int)img.step; |
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int sample_depth = CV_ELEM_SIZE1(m_type); |
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int src_elems_per_row = m_width*m_channels; |
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int src_stride = src_elems_per_row*sample_depth; |
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int x, y; |
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bool res = false, funcout; |
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PaletteEntry palette[256]; |
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const struct pam_format *fmt = NULL; |
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struct channel_layout layout; |
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/* setting buffer to max data size so scaling up is possible */ |
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AutoBuffer<uchar> _src(src_elems_per_row * 2); |
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uchar* src = _src; |
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AutoBuffer<uchar> _gray_palette; |
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uchar* gray_palette = _gray_palette; |
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if( m_offset < 0 || !m_strm.isOpened()) |
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return false; |
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if (selected_fmt != CV_IMWRITE_PAM_FORMAT_NULL) |
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fmt = &formats[selected_fmt]; |
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else { |
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/* default layout handling */ |
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if (m_channels >= 3) { |
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layout.bchan = 0; |
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layout.gchan = 1; |
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layout.rchan = 2; |
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} else |
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layout.bchan = layout.gchan = layout.rchan = 0; |
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layout.graychan = 0; |
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} |
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try |
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{ |
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m_strm.setPos( m_offset ); |
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/* the case where data fits the opencv matrix */ |
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if (m_sampledepth == img.depth() && target_channels == m_channels && !bit_mode) { |
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/* special case for 16bit images with wrong endianess */ |
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if (m_sampledepth == CV_16U && !isBigEndian()) |
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{ |
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for (y = 0; y < m_height; y++, data += imp_stride ) |
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{ |
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m_strm.getBytes( src, src_stride ); |
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for( x = 0; x < src_elems_per_row; x++ ) |
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{ |
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uchar v = src[x * 2]; |
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data[x * 2] = src[x * 2 + 1]; |
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data[x * 2 + 1] = v; |
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} |
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} |
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} |
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else { |
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m_strm.getBytes( data, src_stride * m_height ); |
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} |
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} |
||||
else { |
||||
/* black and white mode */ |
||||
if (bit_mode) { |
||||
if( target_channels == 1 ) |
||||
{ |
||||
_gray_palette.allocate(2); |
||||
gray_palette = _gray_palette; |
||||
gray_palette[0] = 0; |
||||
gray_palette[1] = 255; |
||||
for( y = 0; y < m_height; y++, data += imp_stride ) |
||||
{ |
||||
m_strm.getBytes( src, src_stride ); |
||||
FillGrayRow1( data, src, m_width, gray_palette ); |
||||
} |
||||
} else if ( target_channels == 3 ) |
||||
{ |
||||
FillGrayPalette( palette, 1 , false ); |
||||
for( y = 0; y < m_height; y++, data += imp_stride ) |
||||
{ |
||||
m_strm.getBytes( src, src_stride ); |
||||
FillColorRow1( data, src, m_width, palette ); |
||||
} |
||||
} |
||||
} else { |
||||
for (y = 0; y < m_height; y++, data += imp_stride ) |
||||
{ |
||||
m_strm.getBytes( src, src_stride ); |
||||
|
||||
/* endianess correction */ |
||||
if( m_sampledepth == CV_16U && !isBigEndian() ) |
||||
{ |
||||
for( x = 0; x < src_elems_per_row; x++ ) |
||||
{ |
||||
uchar v = src[x * 2]; |
||||
src[x * 2] = src[x * 2 + 1]; |
||||
src[x * 2 + 1] = v; |
||||
} |
||||
} |
||||
|
||||
/* scale down */ |
||||
if( img.depth() == CV_8U && m_sampledepth == CV_16U ) |
||||
{ |
||||
for( x = 0; x < src_elems_per_row; x++ ) |
||||
{ |
||||
int v = ((ushort *)src)[x]; |
||||
src[x] = (uchar)(v >> 8); |
||||
} |
||||
} |
||||
|
||||
/* if we are only scaling up/down then we can then copy the data */ |
||||
if (target_channels == m_channels) { |
||||
memcpy (data, src, imp_stride); |
||||
} |
||||
/* perform correct conversion based on format */ |
||||
else if (fmt) { |
||||
funcout = false; |
||||
if (fmt->cvt_func) |
||||
funcout = fmt->cvt_func (src, data, m_width, target_channels, |
||||
img.depth()); |
||||
/* fall back to default if there is no conversion function or it
|
||||
* can't handle the specified characteristics |
||||
*/ |
||||
if (!funcout) |
||||
basic_conversion (src, &fmt->layout, m_channels, |
||||
m_width, data, target_channels, img.depth()); |
||||
|
||||
/* default to selecting the first available channels */ |
||||
} else { |
||||
basic_conversion (src, &layout, m_channels, |
||||
m_width, data, target_channels, img.depth()); |
||||
} |
||||
} |
||||
} |
||||
} |
||||
|
||||
res = true; |
||||
} catch(...) |
||||
{ |
||||
} |
||||
|
||||
return res; |
||||
} |
||||
|
||||
|
||||
//////////////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
PAMEncoder::PAMEncoder() |
||||
{ |
||||
m_description = "Portable arbitrary format (*.pam)"; |
||||
m_buf_supported = true; |
||||
} |
||||
|
||||
|
||||
PAMEncoder::~PAMEncoder() |
||||
{ |
||||
} |
||||
|
||||
|
||||
ImageEncoder PAMEncoder::newEncoder() const |
||||
{ |
||||
return makePtr<PAMEncoder>(); |
||||
} |
||||
|
||||
|
||||
bool PAMEncoder::isFormatSupported( int depth ) const |
||||
{ |
||||
return depth == CV_8U || depth == CV_16U; |
||||
} |
||||
|
||||
|
||||
bool PAMEncoder::write( const Mat& img, const std::vector<int>& params ) |
||||
{ |
||||
|
||||
WLByteStream strm; |
||||
|
||||
int width = img.cols, height = img.rows; |
||||
int stride = width*(int)img.elemSize(); |
||||
const uchar* data = img.ptr(); |
||||
const struct pam_format *fmt = NULL; |
||||
int x, y, tmp, bufsize = 256; |
||||
|
||||
/* parse save file type */ |
||||
for( size_t i = 0; i < params.size(); i += 2 ) |
||||
if( params[i] == CV_IMWRITE_PAM_TUPLETYPE ) { |
||||
if ( params[i+1] > CV_IMWRITE_PAM_FORMAT_NULL && |
||||
params[i+1] < (int) PAM_FORMATS_NO) |
||||
fmt = &formats[params[i+1]]; |
||||
} |
||||
|
||||
if( m_buf ) |
||||
{ |
||||
if( !strm.open(*m_buf) ) |
||||
return false; |
||||
m_buf->reserve( alignSize(256 + stride*height, 256)); |
||||
} |
||||
else if( !strm.open(m_filename) ) |
||||
return false; |
||||
|
||||
tmp = width * (int)img.elemSize(); |
||||
|
||||
if (bufsize < tmp) |
||||
bufsize = tmp; |
||||
|
||||
AutoBuffer<char> _buffer(bufsize); |
||||
char* buffer = _buffer; |
||||
|
||||
/* write header */ |
||||
tmp = 0; |
||||
tmp += sprintf( buffer, "P7\n"); |
||||
tmp += sprintf( buffer + tmp, "WIDTH %d\n", width); |
||||
tmp += sprintf( buffer + tmp, "HEIGHT %d\n", height); |
||||
tmp += sprintf( buffer + tmp, "DEPTH %d\n", img.channels()); |
||||
tmp += sprintf( buffer + tmp, "MAXVAL %d\n", (1 << img.elemSize1()*8) - 1); |
||||
if (fmt) |
||||
tmp += sprintf( buffer + tmp, "TUPLTYPE %s\n", fmt->name ); |
||||
tmp += sprintf( buffer + tmp, "ENDHDR\n" ); |
||||
|
||||
strm.putBytes( buffer, (int)strlen(buffer) ); |
||||
/* write data */ |
||||
if (img.depth() == CV_8U) |
||||
strm.putBytes( data, stride*height ); |
||||
else if (img.depth() == CV_16U) { |
||||
/* fix endianess */ |
||||
if (!isBigEndian()) { |
||||
for( y = 0; y < height; y++ ) { |
||||
memcpy( buffer, img.ptr(y), stride ); |
||||
for( x = 0; x < stride; x += 2 ) |
||||
{ |
||||
uchar v = buffer[x]; |
||||
buffer[x] = buffer[x + 1]; |
||||
buffer[x + 1] = v; |
||||
} |
||||
strm.putBytes( buffer, stride ); |
||||
} |
||||
} else |
||||
strm.putBytes( data, stride*height ); |
||||
} else |
||||
assert (0); |
||||
|
||||
strm.close(); |
||||
return true; |
||||
} |
||||
|
||||
} |
||||
@ -0,0 +1,99 @@ |
||||
/*M///////////////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
|
||||
//
|
||||
// By downloading, copying, installing or using the software you agree to this license.
|
||||
// If you do not agree to this license, do not download, install,
|
||||
// copy or use the software.
|
||||
//
|
||||
//
|
||||
// License Agreement
|
||||
// For Open Source Computer Vision Library
|
||||
// (3-clause BSD License)
|
||||
//
|
||||
// Copyright (C) 2000-2016, Intel Corporation, all rights reserved.
|
||||
// Copyright (C) 2009-2011, Willow Garage Inc., all rights reserved.
|
||||
// Copyright (C) 2009-2016, NVIDIA Corporation, all rights reserved.
|
||||
// Copyright (C) 2010-2013, Advanced Micro Devices, Inc., all rights reserved.
|
||||
// Copyright (C) 2015-2016, OpenCV Foundation, all rights reserved.
|
||||
// Copyright (C) 2015-2016, Itseez Inc., all rights reserved.
|
||||
// Third party copyrights are property of their respective owners.
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without modification,
|
||||
// are permitted provided that the following conditions are met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright notice,
|
||||
// this list of conditions and the following disclaimer.
|
||||
//
|
||||
// * Redistributions in binary form must reproduce the above copyright notice,
|
||||
// this list of conditions and the following disclaimer in the documentation
|
||||
// and/or other materials provided with the distribution.
|
||||
//
|
||||
// * Neither the names of the copyright holders nor the names of the contributors
|
||||
// may be used to endorse or promote products derived from this software
|
||||
// without specific prior written permission.
|
||||
//
|
||||
// This software is provided by the copyright holders and contributors "as is" and
|
||||
// any express or implied warranties, including, but not limited to, the implied
|
||||
// warranties of merchantability and fitness for a particular purpose are disclaimed.
|
||||
// In no event shall copyright holders or contributors be liable for any direct,
|
||||
// indirect, incidental, special, exemplary, or consequential damages
|
||||
// (including, but not limited to, procurement of substitute goods or services;
|
||||
// loss of use, data, or profits; or business interruption) however caused
|
||||
// and on any theory of liability, whether in contract, strict liability,
|
||||
// or tort (including negligence or otherwise) arising in any way out of
|
||||
// the use of this software, even if advised of the possibility of such damage.
|
||||
//
|
||||
//
|
||||
//M*/
|
||||
|
||||
//Based on "imgcodecs/src/grfmt_pxm.hpp"
|
||||
//Written by Dimitrios Katsaros <patcherwork@gmail.com>
|
||||
|
||||
#ifndef _OPENCV_PAM_HPP_ |
||||
#define _OPENCV_PAM_HPP_ |
||||
|
||||
#include "grfmt_base.hpp" |
||||
#include "bitstrm.hpp" |
||||
|
||||
namespace cv |
||||
{ |
||||
|
||||
class PAMDecoder : public BaseImageDecoder |
||||
{ |
||||
public: |
||||
|
||||
PAMDecoder(); |
||||
virtual ~PAMDecoder(); |
||||
|
||||
bool readData( Mat& img ); |
||||
bool readHeader(); |
||||
|
||||
size_t signatureLength() const; |
||||
bool checkSignature( const String& signature ) const; |
||||
ImageDecoder newDecoder() const; |
||||
|
||||
protected: |
||||
|
||||
RLByteStream m_strm; |
||||
int m_maxval, m_channels, m_sampledepth, m_offset, |
||||
selected_fmt; |
||||
bool bit_mode; |
||||
}; |
||||
|
||||
|
||||
class PAMEncoder : public BaseImageEncoder |
||||
{ |
||||
public: |
||||
PAMEncoder(); |
||||
virtual ~PAMEncoder(); |
||||
|
||||
bool isFormatSupported( int depth ) const; |
||||
bool write( const Mat& img, const std::vector<int>& params ); |
||||
|
||||
ImageEncoder newEncoder() const; |
||||
}; |
||||
|
||||
} |
||||
|
||||
#endif /* _OPENCV_PAM_HPP_ */ |
||||
Loading…
Reference in new issue