forked from Rowland/EG
95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file imageInfo.cxx
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* @author drose
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* @date 2003-03-13
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*/
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#include "imageInfo.h"
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#include "pnmImageHeader.h"
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/**
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*
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*/
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ImageInfo::
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ImageInfo() {
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set_program_brief("report the size of image files");
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set_program_description
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("This program reads the headers of a series of one or more "
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"image files and reports the image sizes to standard output.");
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add_option
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("2", "", 0,
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"Report only images that have a non-power-of-two size in either "
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"dimension. Images whose dimensions are both a power of two will "
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"not be mentioned.",
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&ImageInfo::dispatch_none, &_report_power_2, nullptr);
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}
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/**
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*
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*/
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void ImageInfo::
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run() {
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Args::const_iterator ai;
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for (ai = _filenames.begin(); ai != _filenames.end(); ++ai) {
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Filename filename = (*ai);
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PNMImageHeader header;
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if (!header.read_header(filename)) {
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// Could not read the image header.
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if (filename.exists()) {
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nout << filename << ": could not read image.\n";
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} else {
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nout << filename << ": does not exist.\n";
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}
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} else {
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// Successfully read the image header.
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if (!_report_power_2 ||
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!is_power_2(header.get_x_size()) ||
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!is_power_2(header.get_y_size())) {
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nout << filename << ": " << header.get_x_size() << " x "
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<< header.get_y_size() << " x " << header.get_num_channels()
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<< " (maxval = " << header.get_maxval() << ")\n";
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}
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}
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}
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}
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/**
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* Does something with the additional arguments on the command line (after all
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* the -options have been parsed). Returns true if the arguments are good,
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* false otherwise.
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*/
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bool ImageInfo::
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handle_args(ProgramBase::Args &args) {
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if (args.empty()) {
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nout << "List one or more image filenames on command line.\n";
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return false;
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}
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_filenames = args;
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return true;
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}
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/**
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* Returns true if the indicated value is a power of 2, false otherwise.
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*/
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bool ImageInfo::
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is_power_2(int value) const {
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return (value & (value - 1)) == 0;
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}
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int main(int argc, char *argv[]) {
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ImageInfo prog;
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prog.parse_command_line(argc, argv);
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prog.run();
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return 0;
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}
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