static function videoBetween(&$clips, $start, $stop)
{
$video_clips = array();
$z = sizeof($clips);
for ($i = 0; $i < $z; $i++) {
$clip =& $clips[$i];
switch ($clip['type']) {
case 'theme':
if ($clip['track'] < 0) {
break;
}
// fallthrough to others if theme is on main track
case 'video':
case 'image':
case 'transition':
if (!floatgtre($clip['start'], $stop)) {
if (floatgtr($clip['stop'], $start)) {
$video_clips[] =& $clip;
$clip['between'] = TRUE;
$clip = $video_clips[sizeof($video_clips) - 1];
}
}
}
}
return $video_clips;
}
function cache_sequence($url, $fps, $clip_fps, $start, $duration, $dir_path, $options = array())
{
// TODO: support $speed != 1
$result = FALSE;
$url = end_with_slash($url);
$cache_path = url_file_path($url, $dir_path);
if (empty($options['zeropadding'])) {
$options['zeropadding'] = 0;
}
if (empty($options['duration'])) {
$options['duration'] = str_repeat('9', max(1, $options['zeropadding'])) / $clip_fps;
}
if (empty($options['zeropadding'])) {
$options['zeropadding'] = strlen(floor($options['duration'] * $clip_fps));
}
if (empty($options['pattern'])) {
$options['pattern'] = '%.jpg';
}
if (!isset($options['begin'])) {
$options['begin'] = 1;
}
if (empty($options['increment'])) {
$options['increment'] = 1;
}
if (empty($options['dimensions'])) {
$options['dimensions'] = get_file_info('dimensions', $cache_path);
}
$one = floatval(1);
$clip_frame_seconds = $one / $clip_fps;
$frame_seconds = $one / $fps;
if ($duration == -1) {
$duration = $options['duration'];
}
$stop = $start + $duration;
$stop = min($stop, $options['duration']);
$frames = array();
for ($i = $start; !floatgtre($i, $stop); $i += $clip_frame_seconds) {
$frame = floor($i * $clip_fps);
$frame_key = 'frame' . $frame;
if (!isset($frames[$frame_key])) {
$frames[$frame_key] = $frame;
}
}
if ($frames) {
$highest_frame = 0;
$build_dir = $cache_path;
if ($options['dimensions']) {
$build_dir = frame_file_path($cache_path, $options['dimensions'], $clip_fps);
}
asort($frames);
$frames = array_values($frames);
$z = sizeof($frames);
$highest_frame = $frames[$z - 1];
$err = FALSE;
for ($i = 0; $i < $z; $i++) {
$frame = $frames[$i];
$frame *= $options['increment'];
$frame += $options['begin'];
$s = (string) $frame;
if ($options['zeropadding']) {
$s = str_pad($s, $options['zeropadding'], '0', STR_PAD_LEFT);
}
$file_name = str_replace('%', $s, $options['pattern']);
$file_url = $url . $file_name;
$file_path = $build_dir . $file_name;
$download = TRUE;
if ($build_dir != $cache_path) {
if (file_exists($file_path) && filesize($file_path)) {
$download = FALSE;
}
}
if ($download) {
$mime = http_get_file($file_url, $file_path);
if (!$mime) {
$err = 'Could not download: ' . $file_url . ' ' . $file_path;
} else {
if ($build_dir == $cache_path) {
$data = @getimagesize($file_path);
if ($data && $data[0] && $data[1]) {
$options['dimensions'] = $data[0] . 'x' . $data[1];
set_file_info($cache_path, 'dimensions', $options['dimensions']);
set_file_info($cache_path, 'duration', $options['duration']);
set_file_info($cache_path, 'Content-Type', 'video/sequence');
$build_dir = frame_file_path($cache_path, $options['dimensions'], $clip_fps);
if (!safe_path($build_dir)) {
$err = 'Could not get safe path: ' . $build_dir;
} elseif (!@rename($file_path, $build_dir . $file_name)) {
$err = 'Could not rename: ' . $file_path . ' ' . $build_dir . $file_name;
} else {
$file_path = $build_dir . $file_name;
}
} else {
$err = 'Could not get image size: ' . $file_path;
}
}
}
}
if ($err) {
break;
}
$frames[$i] = $file_path;
}
if (!$err) {
for ($i = 1; $i < $highest_frame; $i++) {
$s = (string) $i;
if ($options['zeropadding']) {
$s = str_pad($s, $options['zeropadding'], '0', STR_PAD_LEFT);
}
}
// ffmpeg needs at least one file starting with zero, having zeropadding digits
$options['files'] = $frames;
$result = $options;
}
}
return $result;
}
