a script for triggering and downloading images to host pc

#!/usr/bin/env php

<?php

/**

 * @file save_image_ext.php

 * @brief run from host pc, trigger and download images (from all ports) to the host pc.

 * @copyright Copyright (C) 2017 Elphel Inc.

 * @author Elphel Inc. <support-list@support.elphel.com>

 *

 * @par <b>License</b>:

 *  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 3 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, see <http://www.gnu.org/licenses/>.

*/

if (isset($argv[1])) $_GET['ip'] = $argv[1];

if (isset($_GET['ip'])) $ip = $_GET['ip'];

$path = "images";

$port0 = 2323;

if (!is_dir($path)) {

    $old = umask(0);

    mkdir($path,0777);

    umask($old);

}

$oldp = simplexml_load_file("http://$ip/parsedit.php?immediate&TRIG_PERIOD");

$period = $oldp->TRIG_PERIOD;

$error = false;

if ($fp = simplexml_load_file("http://$ip:2323/trig/pointers")) {

    //elphel_set_P_value(2,ELPHEL_TRIG_PERIOD,0,ELPHEL_CONST_FRAME_IMMED);

    //usleep(200000);

    //elphel_set_P_value(2,ELPHEL_TRIG_PERIOD,1,ELPHEL_CONST_FRAME_IMMED);

    usleep(200000);

    //$system_status = system("./images.sh $ip $n $path");

    for($i=0;$i<4;$i++){

        $port = $port0+$i;

        exec("wget $ip:$port/img -O $path/{$ip}_{$port}.jp4 -o $path/{$ip}_{$port}.log");

        rename_image($path,"{$ip}_{$port}.jp4");

    }

    //why fopen?

    //$add_str = "http://{$master['ip']}/camogm_interface.php?cmd=set_parameter&pname=TRIG_PERIOD&pvalue=";

    $addr_str = "http://$ip/parsedit.php?immediate&TRIG_PERIOD=";

    $fp = fopen($addr_str.($period+1)."*-2&sensor_port=0", 'r');

    $fp = fopen($addr_str.($period)."*-2&sensor_port=0", 'r');

}else{

    $error = true;

}

$res_xml = "<Document>\n";

if ($error){

  $res_xml .= "\t<result>error</result>\n";

}else{

  $res_xml .= "\t<result>ok</result>\n";

}

$res_xml .= "</Document>";

header("Content-Type: text/xml");

header("Content-Length: ".strlen($res_xml)."\n");

header("Pragma: no-cache\n");

printf("%s", $res_xml);

flush();

function rename_image($path,$file){

	//read exif & rename

	$ext = pathinfo("$path/$file", PATHINFO_EXTENSION);

	$exif_data = @exif_read_data("$path/$file");

	//converting GMT a local time GMT+7

	$DateTimeOriginal_local=@strtotime($exif_data['DateTimeOriginal']);/*-25200;*/

        $tmp = explode("_",$exif_data['Model']);

        if (count($tmp)==2){

          $model = intval(trim($tmp[1]));

          $chn = intval($exif_data['PageNumber'])+1;

          if        ($model==1001) {

            $k=$chn;

          }else  if ($model==1002) {

            $k=$chn+4;

          }else  if ($model==1003) {

            $k=$chn+6;

          }else{

            $k=$chn;

          }

          $new_file_name = $DateTimeOriginal_local."_".$exif_data['SubSecTimeOriginal']."_$k.".$ext;

          rename("$path/$file","$path/$new_file_name");

	}

}

?>

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