1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2013 Bharat Mediratta
*
* 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.
*/
/**
* This is the API for handling movies.
*
* Note: by design, this class does not do any permission checking.
*/
class movie_Core {
static function get_edit_form($movie) {
$form = new Forge("movies/update/$movie->id", "", "post", array("id" => "g-edit-movie-form"));
$form->hidden("from_id")->value($movie->id);
$group = $form->group("edit_item")->label(t("Edit Movie"));
$group->input("title")->label(t("Title"))->value($movie->title)
->error_messages("required", t("You must provide a title"))
->error_messages("length", t("Your title is too long"));
$group->textarea("description")->label(t("Description"))->value($movie->description);
$group->input("name")->label(t("Filename"))->value($movie->name)
->error_messages(
"conflict", t("There is already a movie, photo or album with this name"))
->error_messages("no_slashes", t("The movie name can't contain a \"/\""))
->error_messages("no_trailing_period", t("The movie name can't end in \".\""))
->error_messages("illegal_data_file_extension", t("You cannot change the movie file extension"))
->error_messages("required", t("You must provide a movie file name"))
->error_messages("length", t("Your movie file name is too long"));
$group->input("slug")->label(t("Internet Address"))->value($movie->slug)
->error_messages(
"conflict", t("There is already a movie, photo or album with this internet address"))
->error_messages(
"not_url_safe",
t("The internet address should contain only letters, numbers, hyphens and underscores"))
->error_messages("required", t("You must provide an internet address"))
->error_messages("length", t("Your internet address is too long"));
module::event("item_edit_form", $movie, $form);
$group = $form->group("buttons")->label("");
$group->submit("")->value(t("Modify"));
return $form;
}
/**
* Extract a frame from a movie file. Valid movie_options are start_time (in seconds),
* input_args (extra ffmpeg input args) and output_args (extra ffmpeg output args). Extra args
* are added at the end of the list, so they can override any prior args.
*
* @param string $input_file
* @param string $output_file
* @param array $movie_options (optional)
*/
static function extract_frame($input_file, $output_file, $movie_options=null) {
$ffmpeg = movie::find_ffmpeg();
if (empty($ffmpeg)) {
throw new Exception("@todo MISSING_FFMPEG");
}
list($width, $height, $mime_type, $extension, $duration) = movie::get_file_metadata($input_file);
if (isset($movie_options["start_time"]) && is_numeric($movie_options["start_time"])) {
$start_time = max(0, $movie_options["start_time"]); // ensure it's non-negative
} else {
$start_time = module::get_var("gallery", "movie_extract_frame_time", 3); // use default
}
// extract frame at start_time, unless movie is too short
$start_time_arg = ($duration >= $start_time + 0.1) ?
"-ss " . movie::seconds_to_hhmmssdd($start_time) : "";
$input_args = isset($movie_options["input_args"]) ? $movie_options["input_args"] : "";
$output_args = isset($movie_options["output_args"]) ? $movie_options["output_args"] : "";
$cmd = escapeshellcmd($ffmpeg) . " $input_args -i " . escapeshellarg($input_file) .
" -an $start_time_arg -an -r 1 -vframes 1" .
" -s {$width}x{$height}" .
" -y -f mjpeg $output_args " . escapeshellarg($output_file) . " 2>&1";
exec($cmd, $exec_output, $exec_return);
clearstatcache(); // use $filename parameter when PHP_version is 5.3+
if (filesize($output_file) == 0 || $exec_return) {
// Maybe the movie needs the "-threads 1" argument added
// (see http://sourceforge.net/apps/trac/gallery/ticket/1924)
$cmd = escapeshellcmd($ffmpeg) . " -threads 1 $input_args -i " . escapeshellarg($input_file) .
" -an $start_time_arg -an -r 1 -vframes 1" .
" -s {$width}x{$height}" .
" -y -f mjpeg $output_args " . escapeshellarg($output_file) . " 2>&1";
exec($cmd, $exec_output, $exec_return);
clearstatcache();
if (filesize($output_file) == 0 || $exec_return) {
throw new Exception("@todo FFMPEG_FAILED");
}
}
}
/**
* Return the path to the ffmpeg binary if one exists and is executable, or null.
*/
static function find_ffmpeg() {
if (!($ffmpeg_path = module::get_var("gallery", "ffmpeg_path")) || !file_exists($ffmpeg_path)) {
$ffmpeg_path = system::find_binary(
"ffmpeg", module::get_var("gallery", "graphics_toolkit_path"));
module::set_var("gallery", "ffmpeg_path", $ffmpeg_path);
}
return $ffmpeg_path;
}
/**
* Return the width, height, mime_type, extension and duration of the given movie file.
*/
static function get_file_metadata($file_path) {
$ffmpeg = movie::find_ffmpeg();
if (empty($ffmpeg)) {
throw new Exception("@todo MISSING_FFMPEG");
}
$cmd = escapeshellcmd($ffmpeg) . " -i " . escapeshellarg($file_path) . " 2>&1";
$result = `$cmd`;
if (preg_match("/Stream.*?Video:.*?, (\d+)x(\d+)/", $result, $matches_res)) {
if (preg_match("/Stream.*?Video:.*? \[.*?DAR (\d+):(\d+).*?\]/", $result, $matches_dar) &&
$matches_dar[1] >= 1 && $matches_dar[2] >= 1) {
// DAR is defined - determine width based on height and DAR
// (should always be int, but adding round to be sure)
$matches_res[1] = round($matches_res[2] * $matches_dar[1] / $matches_dar[2]);
}
list ($width, $height) = array($matches_res[1], $matches_res[2]);
} else {
list ($width, $height) = array(0, 0);
}
$extension = strtolower(pathinfo($file_path, PATHINFO_EXTENSION));
$extension = $extension ? $extension : "flv"; // No extension? Assume FLV.
$mime_type = legal_file::get_movie_types_by_extension($extension);
$mime_type = $mime_type ? $mime_type : "video/x-flv"; // No MIME found? Default to video/x-flv.
if (preg_match("/Duration: (\d+:\d+:\d+\.\d+)/", $result, $matches)) {
$duration = movie::hhmmssdd_to_seconds($matches[1]);
} else if (preg_match("/duration.*?:.*?(\d+)/", $result, $matches)) {
$duration = $matches[1];
} else {
$duration = 0;
}
return array($width, $height, $mime_type, $extension, $duration);
}
/**
* Return the time/duration formatted in hh:mm:ss.dd from a number of seconds.
* Useful for inputs to ffmpeg.
*
* Note that this is similar to date("H:i:s", mktime(0,0,$seconds,0,0,0,0)), but unlike this
* approach avoids potential issues with time zone and DST mismatch and/or using deprecated
* features (the last argument of mkdate above, which disables DST, is deprecated as of PHP 5.3).
*/
static function seconds_to_hhmmssdd($seconds) {
return sprintf("%02d:%02d:%05.2f", floor($seconds / 3600), floor(($seconds % 3600) / 60),
floor(100 * $seconds % 6000) / 100);
}
/**
* Return the number of seconds from a time/duration formatted in hh:mm:ss.dd.
* Useful for outputs from ffmpeg.
*/
static function hhmmssdd_to_seconds($hhmmssdd) {
preg_match("/(\d+):(\d+):(\d+\.\d+)/", $hhmmssdd, $matches);
return 3600 * $matches[1] + 60 * $matches[2] + $matches[3];
}
}
|
