112 lines
2.9 KiB
PHP
112 lines
2.9 KiB
PHP
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<?php
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require("./lib//config.php");
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require("./lib//helpers.php");
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require("./lib//validation.php");
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session_start();
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setup_locale();
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validate_get_parameter();
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$id = $_GET["id"];
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$tempo = $_GET["tempo"];
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$time = $_GET["time"];
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$bars = intval($_GET["bars"]);
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$dynamic_beat = $_GET["dynamic_beat"];
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$dynamic_rhythm = $_GET["dynamic_rhythm"];
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$notes_final = [];
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$notes_modifiers = [];
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$bars_count = 0;
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$rhythm_length = 0;
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$time_explode = explode("/", $time, 2);
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$rhythm_length_max = MAX_FRACTION * (intval($time_explode[0]) / intval($time_explode[1]));
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$id_hashed = md5($id);
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do {
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$notes_input = [];
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for($i = 0; $i < strlen($id_hashed); $i+=2)
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{
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$notes_input[] = strval(pow(2, (ord(substr($id_hashed, $i)) % intval(log(MAX_FRACTION, 2))) + 1));
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$notes_modifiers[] = ord(substr($id_hashed, $i + 1));
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}
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for($i = 0; $i < count($notes_input); $i++)
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{
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if($bars_count == $bars)
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{
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continue;
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}
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$note_val = intval($notes_input[$i]);
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if(($note_val == 0) || ($note_val > MAX_FRACTION) || (!is_valid_note($note_val)))
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{
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continue;
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}
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if($rhythm_length + (MAX_FRACTION / $note_val) > $rhythm_length_max)
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{
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continue;
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}
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$rhythm_length += MAX_FRACTION / $note_val;
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if($notes_modifiers[$i] & 0b0111)
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{
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$notes_final[] = PERCUSSION_CLAP . $note_val;
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}
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else
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{
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$notes_final[] = PERCUSSION_REST . $note_val;
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}
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if($rhythm_length == $rhythm_length_max)
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{
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$notes_final[] = "|";
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$rhythm_length = 0;
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$bars_count++;
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}
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}
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$id_hashed = md5($id_hashed);
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} while($bars_count < $bars);
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$notes_final = implode(" ", $notes_final);
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$rest_padding = array_fill(0, $time_explode[0], PERCUSSION_REST . $time_explode[1]);
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$rest_padding[0] = $rest_padding[0] . "\\$dynamic_rhythm";
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$rest_padding = implode(" ", $rest_padding);
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$beats_one_bar = array_fill(1, $time_explode[0] - 1, PERCUSSION_BEAT . $time_explode[1]);
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array_unshift($beats_one_bar, PERCUSSION_BEAT_ACCENT . $time_explode[1] . "\\$dynamic_beat");
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array_push($beats_one_bar, "|");
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$beats = implode(" ", array_fill(0, $bars_count + 2, implode(" ", $beats_one_bar)));
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$file_content = sprintf(
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LILYPOND_FORMAT,
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$time,
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$tempo,
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$notes_final,
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$rest_padding,
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$beats
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);
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$file_name = md5($file_content);
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file_put_contents( OUTPUT_FOLDER . $file_name . ".ly", $file_content);
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exec(sprintf("lilypond --png -o %1\$s %1\$s$file_name.ly && convert %1\$s$file_name.png -trim %1\$s$file_name.png", OUTPUT_FOLDER));
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echo(render(
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"./templates/index.tpl.php",
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$locale,
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array(
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"id" => $id,
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"time" => $time,
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"tempo" => $tempo,
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"bars" => $bars,
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"file_name" => $file_name,
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"dynamic_beat" => $dynamic_beat,
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"dynamic_rhythm" => $dynamic_rhythm,
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)
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));
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?>
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