function __buildAudio()
{
$result = FALSE;
$c = 0;
$y = sizeof(array_keys($this->__mashData['cache_urls']));
foreach ($this->__mashData['cache_urls'] as $url => $true) {
$this->_progressStep('CacheFiles', 1 + round(20 * ($c / $y)), 'Caching Media');
$result = cache_url($url, $this->_options['DirCache']);
if (!$result) {
throw new RuntimeException('Could not cache media file: ' . $url);
}
$file_path = $result;
$ext = file_extension($file_path);
switch ($ext) {
//case 'mp3': // recent version of ecasound doesn't support seeking mp3s
case 'wav':
case 'aiff':
case 'aif':
break;
default:
// needs to be converted for ecasound
$cached_wav = cache_file_wav($file_path, array(), $this->_options['PathFFmpeg']);
if (!$cached_wav) {
throw new RuntimeException('Could not determine path to audio wav file: ' . $file_path);
}
if (!empty($this->_options['Verbose'])) {
$this->log($cached_wav['command']);
}
if (!$cached_wav['path']) {
throw new RuntimeException('Could not build audio wav file: ' . $file_path);
}
$file_path = $cached_wav['path'];
}
$this->__mashData['cache_urls'][$url] = $file_path;
$this->_progressStep('CacheFiles', 100, 'Cached Media');
}
$this->_progressStep('BuildAudio', 25, 'Building Audio');
$audio_path = $this->_buildDir . 'build/audio.wav';
if ($this->__mashData['has_audio']) {
$path = $this->_options['CoderBaseURL'];
$cmd = $this->_options['PathEcasound'];
$counter = 1;
$last_sound = floatval(0);
$one = floatval(1);
foreach ($this->__mashData['clips'] as $clip) {
if (!$clip['audio']) {
continue;
}
// make sure we've got a locally cached file for this url
$file_path = $this->__mashData['cache_urls'][$clip['audio']];
if (!$file_path) {
throw new RuntimeException('No path for audio URL: ' . $clip['audio']);
}
$cmd .= ' -a:' . $counter++ . ' -i ';
if (floatgtr($clip['loops'], $one)) {
$cmd .= ' audioloop,';
}
$cmd .= "playat,{$clip['start']},select,{$clip['trimstart']},{$clip['length']},{$file_path}";
if (floatgtr($clip['loops'], $one)) {
$cmd .= ' -t:' . $clip['duration'] * $clip['loops'];
}
$volume = $clip['volume'];
$volume = explode(',', $volume);
$z = sizeof($volume) / 2;
$cmd .= ' -ea:0 -klg:1,0,100,' . $z;
for ($i = 0; $i < $z; $i++) {
$p = ($i + 1) * 2;
$pos = floatval($volume[$p - 2]);
$val = floatval($volume[$p - 1]) / floatval(100);
if ($pos) {
$pos = $clip['length'] * $clip['loops'] * $pos / floatval(100);
}
$cmd .= ',' . ($clip['start'] + $pos) . ',' . $val;
}
$last_sound = floatmax($last_sound, $clip['start'] + $clip['length']);
}
// if there is space at the end, fill it with silence
if (floatgtr($this->__mashData['duration'], $last_sound)) {
//$this->log('duration = ' . $this->__mashData['duration'] . ' last_sound = ' . $last_sound);
$cmd .= ' -a:' . $counter . ' -i ';
$cmd .= 'playat,0,tone,sine,0,' . $this->__mashData['duration'];
}
$cmd .= ' -a:all -z:mixmode,sum';
$cmd .= ' -o ' . $audio_path;
}
if ($cmd) {
$result = $this->_shellExecute($cmd);
if (!file_exists($audio_path)) {
throw new RuntimeException('Could not build audio: ' . $cmd);
}
$result = $audio_path;
}
return $result;
}
function scale_switches($orig_dims, $dims, $fill)
{
$target_w = floatval($dims[0]);
$target_h = floatval($dims[1]);
$vf = '';
$scale = 'scale=' . $target_w . ':' . $target_h;
if ($fill && $fill != 'stretch') {
$orig_even_w = floatval($orig_dims[0]);
$orig_dims1 = floatval($orig_dims[1]);
$extra0 = $orig_even_w % 2;
$extra1 = $orig_dims1 % 2;
$orig_even_w -= $extra0;
$orig_dims1 -= $extra1;
$ratio_w = $target_w / $orig_even_w;
$ratio_h = $target_h / $orig_dims1;
if (!floatcmp($ratio_w, $ratio_h)) {
$multiplier = $fill == 'scale' ? floatmin($ratio_w, $ratio_h) : floatmax($ratio_w, $ratio_h);
$scaled_w = round($target_w / $multiplier);
$scaled_h = round($target_h / $multiplier);
if (!floatcmp($orig_even_w, $scaled_w)) {
if (floatgtr($orig_even_w, $scaled_w)) {
//$a['cropleft'] = $a['cropright'] = floor((($orig_even_w - $scaled_w) / 2));
$vf .= 'crop=' . floor(($orig_even_w - $scaled_w) / 2) . ':0:' . $scaled_w . ':' . $scaled_h;
} else {
/*$pad_x = $pad_width = floor(($scaled_w -$orig_even_w) / 2);
$pad_x -= $extra0;
$dims[0] -= 2 * $pad_width;
$dims[0] += $extra0;
$dims[1] += $extra1;
*/
$vf .= 'pad=' . $scaled_w . ':' . $scaled_h . ':' . (floor(($scaled_w - $orig_even_w) / 2) - $extra0) . ':0';
}
}
if (!floatcmp($orig_dims1, $scaled_h)) {
if (floatgtr($orig_dims1, $scaled_h)) {
$vf .= 'crop=0:' . floor(($orig_dims1 - $scaled_h) / 2) . ':' . $scaled_w . ':' . $scaled_h;
} else {
/*
$pad_y = $pad_height = floor(($scaled_h - $orig_dims1) / 2);
$pad_y -= $extra1;
$dims[1] -= 2 * $pad_height;
$dims[1] += $extra1;
$dims[0] += $extra0;
*/
$vf .= 'pad=' . $scaled_w . ':' . $scaled_h . ':0:' . (floor(($scaled_h - $orig_dims1) / 2) - $extra1);
}
}
}
//$a['s'] = $dims[0] . 'x' . $dims[1];
}
if ($vf) {
$vf .= ',';
}
$vf .= $scale;
$a = array();
$a['vf'] = $vf;
return $a;
}
