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AdobeHDS.php
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AdobeHDS.php
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<?php
define('AUDIO', 0x08);
define('VIDEO', 0x09);
define('SCRIPT_DATA', 0x12);
define('FRAME_TYPE_INFO', 0x05);
define('CODEC_ID_AVC', 0x07);
define('CODEC_ID_AAC', 0x0A);
define('AVC_SEQUENCE_HEADER', 0x00);
define('AAC_SEQUENCE_HEADER', 0x00);
define('AVC_SEQUENCE_END', 0x02);
define('FRAMEGAP_DURATION', 8);
define('INVALID_TIMESTAMP', -1);
class CLI
{
protected static $ACCEPTED = array(
0 => array(
'help' => 'displays this help',
'debug' => 'show debug output',
'delete' => 'delete fragments after processing',
'fproxy' => 'force proxy for downloading of fragments',
'play' => 'dump stream to stdout for piping to media player',
'rename' => 'rename fragments sequentially before processing',
'update' => 'update the script to current git version'
),
1 => array(
'auth' => 'authentication string for fragment requests',
'duration' => 'stop recording after specified number of seconds',
'filesize' => 'split output file in chunks of specified size (MB)',
'fragments' => 'base filename for fragments',
'manifest' => 'manifest file for downloading of fragments',
'outdir' => 'destination folder for output file',
'outfile' => 'filename to use for output file',
'parallel' => 'number of fragments to download simultaneously',
'proxy' => 'proxy for downloading of manifest',
'quality' => 'selected quality level (low|medium|high) or exact bitrate',
'referrer' => 'Referer to use for emulation of browser requests',
'start' => 'start from specified fragment',
'useragent' => 'User-Agent to use for emulation of browser requests'
)
);
var $params = array();
function __construct()
{
LogDebug("In __construct()");
global $argc, $argv;
// Parse params
if ($argc > 1)
{
$paramSwitch = false;
for ($i = 1; $i < $argc; $i++)
{
$arg = $argv[$i];
$isSwitch = preg_match('/^--/', $arg);
if ($isSwitch)
$arg = preg_replace('/^--/', '', $arg);
if ($paramSwitch && $isSwitch)
LogError("[param] expected after '$paramSwitch' switch (" . self::$ACCEPTED[1][$paramSwitch] . ")");
else if (!$paramSwitch && !$isSwitch)
{
if (isset($GLOBALS['baseFilename']) and (!$GLOBALS['baseFilename']))
$GLOBALS['baseFilename'] = $arg;
else
LogError("'$arg' is an invalid switch, use --help to display valid switches.");
}
else if (!$paramSwitch && $isSwitch)
{
if (isset($this->params[$arg]))
LogError("'$arg' switch cannot occur more than once");
$this->params[$arg] = true;
if (isset(self::$ACCEPTED[1][$arg]))
$paramSwitch = $arg;
else if (!isset(self::$ACCEPTED[0][$arg]))
LogError("there's no '$arg' switch, use --help to display all switches.");
}
else if ($paramSwitch && !$isSwitch)
{
$this->params[$paramSwitch] = $arg;
$paramSwitch = false;
}
}
}
// Final check
foreach ($this->params as $k => $v)
if (isset(self::$ACCEPTED[1][$k]) && $v === true)
LogError("[param] expected after '$k' switch (" . self::$ACCEPTED[1][$k] . ")");
}
function getParam($name)
{
if (isset($this->params[$name]))
return $this->params[$name];
else
return "";
}
function displayHelp()
{
LogInfo("You can use script with following switches: \n");
foreach (self::$ACCEPTED[0] as $key => $value)
LogInfo(sprintf(" --%-18s%s", $key, $value));
foreach (self::$ACCEPTED[1] as $key => $value)
LogInfo(sprintf(" --%-9s%-9s%s", $key, " [param]", $value));
}
}
class cURL
{
var $headers, $user_agent, $compression, $cookie_file;
var $active, $cert_check, $fragProxy, $proxy, $response;
var $mh, $ch, $mrc;
static $ref = 0;
function cURL($cookies = true, $cookie = 'Cookies.txt', $compression = 'gzip', $proxy = '')
{
LogDebug("In cURL()");
$this->headers = $this->headers();
$this->user_agent = 'Mozilla/5.0 (Windows NT 5.1; rv:16.0) Gecko/20100101 Firefox/16.0';
$this->compression = $compression;
$this->cookies = $cookies;
if ($this->cookies == true)
$this->cookie($cookie);
$this->cert_check = true;
$this->fragProxy = false;
$this->proxy = $proxy;
self::$ref++;
}
function __destruct()
{
LogDebug("In __destruct()");
$this->stopDownloads();
if ((self::$ref <= 1) and file_exists($this->cookie_file))
unlink($this->cookie_file);
self::$ref--;
}
function headers()
{
LogDebug("In headers()");
$headers[] = 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8';
$headers[] = 'Connection: Keep-Alive';
return $headers;
}
function cookie($cookie_file)
{
LogDebug("In cookie()");
if (file_exists($cookie_file))
$this->cookie_file = $cookie_file;
else
{
$file = fopen($cookie_file, 'w') or $this->error('The cookie file could not be opened. Make sure this directory has the correct permissions.');
$this->cookie_file = $cookie_file;
fclose($file);
}
}
function get($url)
{
LogDebug("In get($url)");
$process = curl_init($url);
curl_setopt($process, CURLOPT_HTTPHEADER, $this->headers);
curl_setopt($process, CURLOPT_HEADER, 0);
curl_setopt($process, CURLOPT_USERAGENT, $this->user_agent);
if ($this->cookies == true)
{
curl_setopt($process, CURLOPT_COOKIEFILE, $this->cookie_file);
curl_setopt($process, CURLOPT_COOKIEJAR, $this->cookie_file);
}
curl_setopt($process, CURLOPT_ENCODING, $this->compression);
curl_setopt($process, CURLOPT_TIMEOUT, 60);
if ($this->proxy)
$this->setProxy($process, $this->proxy);
curl_setopt($process, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($process, CURLOPT_FOLLOWLOCATION, 1);
if (!$this->cert_check)
curl_setopt($process, CURLOPT_SSL_VERIFYPEER, 0);
$this->response = curl_exec($process);
if ($this->response !== false)
$status = curl_getinfo($process, CURLINFO_HTTP_CODE);
curl_close($process);
if (isset($status))
return $status;
else
return false;
}
function post($url, $data)
{
LogDebug("In post()");
$process = curl_init($url);
$headers = $this->headers;
$headers[] = 'Content-Type: application/x-www-form-urlencoded;charset=UTF-8';
curl_setopt($process, CURLOPT_HTTPHEADER, $headers);
curl_setopt($process, CURLOPT_HEADER, 1);
curl_setopt($process, CURLOPT_USERAGENT, $this->user_agent);
if ($this->cookies == true)
{
curl_setopt($process, CURLOPT_COOKIEFILE, $this->cookie_file);
curl_setopt($process, CURLOPT_COOKIEJAR, $this->cookie_file);
}
curl_setopt($process, CURLOPT_ENCODING, $this->compression);
curl_setopt($process, CURLOPT_TIMEOUT, 60);
if ($this->proxy)
$this->setProxy($process, $this->proxy);
curl_setopt($process, CURLOPT_POSTFIELDS, $data);
curl_setopt($process, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($process, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($process, CURLOPT_POST, 1);
if (!$this->cert_check)
curl_setopt($process, CURLOPT_SSL_VERIFYPEER, 0);
$return = curl_exec($process);
curl_close($process);
return $return;
}
function setProxy(&$process, $proxy)
{
LogDebug("In setProxy()");
$type = substr($proxy, 0, stripos($proxy, "://"));
if ($type)
{
$type = strtolower($type);
$proxy = substr($proxy, stripos($proxy, "://") + 3);
}
switch ($type)
{
case "socks4":
$type = CURLPROXY_SOCKS4;
break;
case "socks5":
$type = CURLPROXY_SOCKS5;
break;
default:
$type = CURLPROXY_HTTP;
}
curl_setopt($process, CURLOPT_PROXY, $proxy);
curl_setopt($process, CURLOPT_PROXYTYPE, $type);
}
function addDownload($url, $id)
{
LogDebug("In addDownload()");
if (!isset($this->mh))
$this->mh = curl_multi_init();
if (isset($this->ch[$id]))
return;
else
$download =& $this->ch[$id];
$download['id'] = $id;
$download['url'] = $url;
$download['ch'] = curl_init($url);
curl_setopt($download['ch'], CURLOPT_HTTPHEADER, $this->headers);
curl_setopt($download['ch'], CURLOPT_HEADER, 0);
curl_setopt($download['ch'], CURLOPT_USERAGENT, $this->user_agent);
if ($this->cookies == true)
{
curl_setopt($download['ch'], CURLOPT_COOKIEFILE, $this->cookie_file);
curl_setopt($download['ch'], CURLOPT_COOKIEJAR, $this->cookie_file);
}
curl_setopt($download['ch'], CURLOPT_ENCODING, $this->compression);
curl_setopt($download['ch'], CURLOPT_TIMEOUT, 300);
if ($this->fragProxy and $this->proxy)
$this->setProxy($download['ch'], $this->proxy);
curl_setopt($download['ch'], CURLOPT_BINARYTRANSFER, 1);
curl_setopt($download['ch'], CURLOPT_RETURNTRANSFER, 1);
curl_setopt($download['ch'], CURLOPT_FOLLOWLOCATION, 1);
if (!$this->cert_check)
curl_setopt($download['ch'], CURLOPT_SSL_VERIFYPEER, 0);
curl_multi_add_handle($this->mh, $download['ch']);
do
{
$this->mrc = curl_multi_exec($this->mh, $this->active);
} while ($this->mrc == CURLM_CALL_MULTI_PERFORM);
}
function checkDownloads()
{
LogDebug("In checkDownloads()");
if (isset($this->mh))
{
curl_multi_select($this->mh);
$this->mrc = curl_multi_exec($this->mh, $this->active);
if ($this->mrc != CURLM_OK)
return false;
while ($info = curl_multi_info_read($this->mh))
{
foreach ($this->ch as $download)
if ($download['ch'] == $info['handle'])
break;
$info = curl_getinfo($download['ch']);
$array['id'] = $download['id'];
$array['url'] = $download['url'];
if ($info['http_code'] == 200)
{
if ($info['size_download'] >= $info['download_content_length'])
{
$array['status'] = $info['http_code'];
$array['response'] = curl_multi_getcontent($download['ch']);
}
else
{
$array['status'] = false;
$array['response'] = "";
}
}
else
{
$array['status'] = $info['http_code'];
$array['response'] = curl_multi_getcontent($download['ch']);
}
$downloads[] = $array;
curl_multi_remove_handle($this->mh, $download['ch']);
curl_close($download['ch']);
unset($this->ch[$download['id']]);
}
if (isset($downloads) and (count($downloads) > 0))
return $downloads;
}
return false;
}
function stopDownloads()
{
LogDebug("In stopDownloads()");
if (isset($this->mh))
{
if (isset($this->ch))
{
foreach ($this->ch as $download)
{
curl_multi_remove_handle($this->mh, $download['ch']);
curl_close($download['ch']);
}
unset($this->ch);
}
curl_multi_close($this->mh);
unset($this->mh);
}
}
function error($error)
{
LogError("cURL Error : $error");
}
}
class F4F
{
var $audio, $auth, $baseFilename, $baseTS, $bootstrapUrl, $baseUrl, $debug, $duration, $fileCount, $filesize;
var $format, $live, $media, $outDir, $outFile, $parallel, $play, $processed, $quality, $rename, $video;
var $prevTagSize, $tagHeaderLen;
var $segTable, $fragTable, $segNum, $fragNum, $frags, $fragCount, $fragsPerSeg, $lastFrag, $fragUrl, $discontinuity;
var $prevAudioTS, $prevVideoTS, $pAudioTagLen, $pVideoTagLen, $pAudioTagPos, $pVideoTagPos;
var $prevAVC_Header, $prevAAC_Header, $AVC_HeaderWritten, $AAC_HeaderWritten;
function __construct()
{
LogDebug("In F4F__construct()");
$this->auth = "";
$this->baseFilename = "";
$this->bootstrapUrl = "";
$this->debug = false;
$this->duration = 0;
$this->fileCount = 1;
$this->format = "";
$this->live = false;
$this->outDir = "";
$this->outFile = "";
$this->parallel = 8;
$this->play = false;
$this->processed = false;
$this->quality = "high";
$this->rename = false;
$this->segTable = array();
$this->fragTable = array();
$this->segNum = 1;
$this->fragNum = false;
$this->frags = array();
$this->fragCount = 0;
$this->fragsPerSeg = 0;
$this->lastFrag = 0;
$this->discontinuity = "";
$this->InitDecoder();
}
function InitDecoder()
{
LogDebug("In F4F.InitDecoder()");
$this->audio = false;
$this->baseTS = false;
$this->filesize = 0;
$this->video = false;
$this->prevTagSize = 4;
$this->tagHeaderLen = 11;
$this->prevAudioTS = INVALID_TIMESTAMP;
$this->prevVideoTS = INVALID_TIMESTAMP;
$this->pAudioTagLen = 0;
$this->pVideoTagLen = 0;
$this->pAudioTagPos = 0;
$this->pVideoTagPos = 0;
$this->prevAVC_Header = false;
$this->prevAAC_Header = false;
$this->AVC_HeaderWritten = false;
$this->AAC_HeaderWritten = false;
}
function GetManifest($cc, $manifest)
{
LogDebug("In F4F.GetManifest()");
$status = $cc->get($manifest);
if ($status == 403)
LogError("Access Denied! Unable to download the manifest.");
else if ($status != 200)
LogError("Unable to download the manifest");
$xml = simplexml_load_string(trim($cc->response));
if (!$xml)
LogError("Failed to load xml");
$namespace = $xml->getDocNamespaces();
$namespace = $namespace[''];
$xml->registerXPathNamespace("ns", $namespace);
return $xml;
}
function ParseManifest($cc, $manifest)
{
LogDebug("In F4F.ParseManifest()");
LogInfo("Processing manifest info....");
$xml = $this->GetManifest($cc, $manifest);
$baseUrl = $xml->xpath("/ns:manifest/ns:baseURL");
if (isset($baseUrl[0]))
{
$baseUrl = GetString($baseUrl[0]);
if (substr($baseUrl, -1) != "/")
$baseUrl .= "/";
}
else
$baseUrl = "";
$url = $xml->xpath("/ns:manifest/ns:media[@*]");
if (isset($url[0]['href']))
{
foreach ($url as $manifest)
{
$bitrate = (int) $manifest['bitrate'];
$entry =& $manifests[$bitrate];
$entry['bitrate'] = $bitrate;
$href = GetString($manifest['href']);
if (substr($href, 0, 1) == "/")
$href = substr($href, 1);
$entry['url'] = NormalizePath($baseUrl . $href);
$entry['xml'] = $this->GetManifest($cc, $entry['url']);
}
}
else
{
$manifests[0]['bitrate'] = 0;
$manifests[0]['url'] = $manifest;
$manifests[0]['xml'] = $xml;
}
foreach ($manifests as $manifest)
{
$xml = $manifest['xml'];
// Extract baseUrl from manifest url
$baseUrl = $xml->xpath("/ns:manifest/ns:baseURL");
if (isset($baseUrl[0]))
{
$baseUrl = GetString($baseUrl[0]);
if (substr($baseUrl, -1) == "/")
$baseUrl = substr($baseUrl, 0, -1);
}
else
{
$baseUrl = $manifest['url'];
if (strpos($baseUrl, '?') !== false)
$baseUrl = substr($baseUrl, 0, strpos($baseUrl, '?'));
$baseUrl = substr($baseUrl, 0, strrpos($baseUrl, '/'));
}
if (!isHttpUrl($baseUrl))
LogError("Provided manifest is not a valid HDS manifest");
$streams = $xml->xpath("/ns:manifest/ns:media");
foreach ($streams as $stream)
{
$array = array();
foreach ($stream->attributes() as $k => $v)
$array[strtolower($k)] = GetString($v);
$array['metadata'] = GetString($stream->{'metadata'});
$stream = $array;
$bitrate = isset($stream['bitrate']) ? (int) $stream['bitrate'] : $manifest['bitrate'];
$streamId = isset($stream[strtolower('streamId')]) ? $stream[strtolower('streamId')] : "";
$mediaEntry =& $this->media[$bitrate];
$mediaEntry['baseUrl'] = $baseUrl;
if (substr($stream['url'], 0, 1) == "/")
$mediaEntry['url'] = substr($stream['url'], 1);
else
$mediaEntry['url'] = $stream['url'];
if (isset($stream[strtolower('bootstrapInfoId')]))
$bootstrap = $xml->xpath("/ns:manifest/ns:bootstrapInfo[@id='" . $stream[strtolower('bootstrapInfoId')] . "']");
else
$bootstrap = $xml->xpath("/ns:manifest/ns:bootstrapInfo");
if (isset($bootstrap[0]['url']))
{
$bootstrapUrl = GetString($bootstrap[0]['url']);
if (!isHttpUrl($bootstrapUrl))
$bootstrapUrl = $mediaEntry['baseUrl'] . "/$bootstrapUrl";
$mediaEntry['bootstrapUrl'] = NormalizePath($bootstrapUrl);
if ($cc->get($mediaEntry['bootstrapUrl']) != 200)
LogError("Failed to get bootstrap info");
$mediaEntry['bootstrap'] = $cc->response;
}
else
$mediaEntry['bootstrap'] = base64_decode(GetString($bootstrap[0]));
if (isset($stream['metadata']))
$mediaEntry['metadata'] = base64_decode($stream['metadata']);
else
$mediaEntry['metadata'] = "";
}
}
// Available qualities
$bitrates = array();
if (!count($this->media))
LogError("No media entry found");
krsort($this->media, SORT_NUMERIC);
LogDebug("Manifest Entries:\n");
LogDebug(sprintf(" %-8s%s", "Bitrate", "URL"));
for ($i = 0; $i < count($this->media); $i++)
{
$key = KeyName($this->media, $i);
$bitrates[] = $key;
LogDebug(sprintf(" %-8d%s", $key, $this->media[$key]['url']));
}
LogDebug("");
LogInfo("Quality Selection:\n Available: " . implode(' ', $bitrates));
// Quality selection
if (is_numeric($this->quality) and isset($this->media[$this->quality]))
{
$key = $this->quality;
$this->media = $this->media[$key];
}
else
{
$this->quality = strtolower($this->quality);
switch ($this->quality)
{
case "low":
$this->quality = 2;
break;
case "medium":
$this->quality = 1;
break;
default:
$this->quality = 0;
}
while ($this->quality >= 0)
{
$key = KeyName($this->media, $this->quality);
if ($key !== NULL)
{
$this->media = $this->media[$key];
break;
}
else
$this->quality -= 1;
}
}
LogInfo(" Selected : " . $key);
$this->baseUrl = $this->media['baseUrl'];
if (isset($this->media['bootstrapUrl']))
$this->bootstrapUrl = $this->media['bootstrapUrl'];
$bootstrapInfo = $this->media['bootstrap'];
ReadBoxHeader($bootstrapInfo, $pos, $boxType, $boxSize);
if ($boxType == "abst")
$this->ParseBootstrapBox($bootstrapInfo, $pos);
else
LogError("Failed to parse bootstrap info");
}
function UpdateBootstrapInfo($cc, $bootstrapUrl)
{
LogDebug("In F4F.UpdateBootstrapInfo()");
$fragNum = $this->fragCount;
$retries = 0;
while (($fragNum == $this->fragCount) and ($retries < 30))
{
$bootstrapPos = 0;
LogDebug("Updating bootstrap info, Available fragments: " . $this->fragCount);
if ($cc->get($bootstrapUrl) != 200)
LogError("Failed to refresh bootstrap info");
$bootstrapInfo = $cc->response;
ReadBoxHeader($bootstrapInfo, $bootstrapPos, $boxType, $boxSize);
if ($boxType == "abst")
$this->ParseBootstrapBox($bootstrapInfo, $bootstrapPos);
else
LogError("Failed to parse bootstrap info");
LogDebug("Update complete, Available fragments: " . $this->fragCount);
if ($fragNum == $this->fragCount)
{
LogInfo("Updating bootstrap info, Retries: " . ++$retries, true);
usleep(4000000);
}
}
}
function ParseBootstrapBox($bootstrapInfo, $pos)
{
LogDebug("In F4F.ParseBootstrapBox()");
$version = ReadByte($bootstrapInfo, $pos);
$flags = ReadInt24($bootstrapInfo, $pos + 1);
$bootstrapVersion = ReadInt32($bootstrapInfo, $pos + 4);
$byte = ReadByte($bootstrapInfo, $pos + 8);
$profile = ($byte & 0xC0) >> 6;
if (($byte & 0x20) >> 5)
$this->live = true;
$update = ($byte & 0x10) >> 4;
$timescale = ReadInt32($bootstrapInfo, $pos + 9);
$currentMediaTime = ReadInt64($bootstrapInfo, 13);
$smpteTimeCodeOffset = ReadInt64($bootstrapInfo, 21);
$pos += 29;
$movieIdentifier = ReadString($bootstrapInfo, $pos);
$serverEntryCount = ReadByte($bootstrapInfo, $pos++);
for ($i = 0; $i < $serverEntryCount; $i++)
$serverEntryTable[$i] = ReadString($bootstrapInfo, $pos);
$qualityEntryCount = ReadByte($bootstrapInfo, $pos++);
for ($i = 0; $i < $qualityEntryCount; $i++)
$qualityEntryTable[$i] = ReadString($bootstrapInfo, $pos);
$drmData = ReadString($bootstrapInfo, $pos);
$metadata = ReadString($bootstrapInfo, $pos);
$segRunTableCount = ReadByte($bootstrapInfo, $pos++);
for ($i = 0; $i < $segRunTableCount; $i++)
{
ReadBoxHeader($bootstrapInfo, $pos, $boxType, $boxSize);
if ($boxType == "asrt")
$this->ParseAsrtBox($bootstrapInfo, $pos);
$pos += $boxSize;
}
$fragRunTableCount = ReadByte($bootstrapInfo, $pos++);
for ($i = 0; $i < $fragRunTableCount; $i++)
{
ReadBoxHeader($bootstrapInfo, $pos, $boxType, $boxSize);
if ($boxType == "afrt")
$this->ParseAfrtBox($bootstrapInfo, $pos);
$pos += $boxSize;
}
}
function ParseAsrtBox($asrt, $pos)
{
LogDebug("In F4F.ParseAsrtBox()");
$version = ReadByte($asrt, $pos);
$flags = ReadInt24($asrt, $pos + 1);
$qualityEntryCount = ReadByte($asrt, $pos + 4);
$pos += 5;
for ($i = 0; $i < $qualityEntryCount; $i++)
$qualitySegmentUrlModifiers[$i] = ReadString($asrt, $pos);
$segCount = ReadInt32($asrt, $pos);
$pos += 4;
LogDebug(sprintf("%s:\n\n %-8s%-10s", "Segment Entries", "Number", "Fragments"));
for ($i = 0; $i < $segCount; $i++)
{
$firstSegment = ReadInt32($asrt, $pos);
$segEntry =& $this->segTable[$firstSegment];
$segEntry['firstSegment'] = $firstSegment;
$segEntry['fragmentsPerSegment'] = ReadInt32($asrt, $pos + 4);
if ($segEntry['fragmentsPerSegment'] & 0x80000000)
$segEntry['fragmentsPerSegment'] = 0;
$pos += 8;
}
unset($segEntry);
foreach ($this->segTable as $segEntry)
LogDebug(sprintf(" %-8s%-10s", $segEntry['firstSegment'], $segEntry['fragmentsPerSegment']));
LogDebug("");
$lastSegment = end($this->segTable);
$this->segNum = $lastSegment['firstSegment'];
$this->fragCount = $lastSegment['fragmentsPerSegment'];
// Use segment table in case of multiple segments
if (count($this->segTable) > 1)
{
$secondLastSegment = prev($this->segTable);
if ($this->fragNum === false)
{
$this->segNum = $lastSegment['firstSegment'];
$this->fragsPerSeg = $secondLastSegment['fragmentsPerSegment'];
$this->fragNum = $secondLastSegment['firstSegment'] * $this->fragsPerSeg + $this->fragCount - 2;
$this->fragCount = $secondLastSegment['firstSegment'] * $this->fragsPerSeg + $this->fragCount;
}
else
$this->fragCount = $secondLastSegment['firstSegment'] * $this->fragsPerSeg + $this->fragCount;
}
}
function ParseAfrtBox($afrt, $pos)
{
LogDebug("In F4F.ParseAfrtBox()");
$version = ReadByte($afrt, $pos);
$flags = ReadInt24($afrt, $pos + 1);
$timescale = ReadInt32($afrt, $pos + 4);
$qualityEntryCount = ReadByte($afrt, $pos + 8);
$pos += 9;
for ($i = 0; $i < $qualityEntryCount; $i++)
$qualitySegmentUrlModifiers[$i] = ReadString($afrt, $pos);
$fragEntries = ReadInt32($afrt, $pos);
$pos += 4;
LogDebug(sprintf("%s:\n\n %-8s%-16s%-16s%-16s", "Fragment Entries", "Number", "Timestamp", "Duration", "Discontinuity"));
for ($i = 0; $i < $fragEntries; $i++)
{
$firstFragment = ReadInt32($afrt, $pos);
$fragEntry =& $this->fragTable[$firstFragment];
$fragEntry['firstFragment'] = $firstFragment;
$fragEntry['firstFragmentTimestamp'] = ReadInt64($afrt, $pos + 4);
$fragEntry['fragmentDuration'] = ReadInt32($afrt, $pos + 12);
$fragEntry['discontinuityIndicator'] = "";
$pos += 16;
if ($fragEntry['fragmentDuration'] == 0)
$fragEntry['discontinuityIndicator'] = ReadByte($afrt, $pos++);
}
unset($fragEntry);
foreach ($this->fragTable as $fragEntry)
LogDebug(sprintf(" %-8s%-16s%-16s%-16s", $fragEntry['firstFragment'], $fragEntry['firstFragmentTimestamp'], $fragEntry['fragmentDuration'], $fragEntry['discontinuityIndicator']));
LogDebug("");
// Use fragment table in case of single segment
if (count($this->segTable) == 1)
{
$firstFragment = reset($this->fragTable);
$lastFragment = end($this->fragTable);
if ($this->fragCount > 0)
$this->fragCount += $firstFragment['firstFragment'] - 1;
if ($this->fragCount < $lastFragment['firstFragment'])
$this->fragCount = $lastFragment['firstFragment'];
if ($this->fragNum === false)
{
if ($this->live)
$this->fragNum = $this->fragCount - 2;
else
$this->fragNum = $firstFragment['firstFragment'] - 1;
}
}
}
function DownloadFragments($cc, $manifest, $opt = array())
{
LogDebug("In F4F.DownloadFragments()");
$start = 0;
extract($opt, EXTR_IF_EXISTS);
$this->ParseManifest($cc, $manifest);
$segNum = $this->segNum;
$fragNum = $this->fragNum;
if ($start)
{
if ($segNum > 1)
if ($start % $this->fragsPerSeg)
$segNum = (int) ($start / $this->fragsPerSeg + 1);
else
$segNum = (int) ($start / $this->fragsPerSeg);
$fragNum = $start - 1;
$this->segNum = $segNum;
$this->fragNum = $fragNum;
}
$this->lastFrag = $fragNum;
$opt['cc'] = $cc;
$opt['duration'] = 0;
// Extract baseFilename
$this->baseFilename = $this->media['url'];
if (substr($this->baseFilename, -1) == '/')
$this->baseFilename = substr($this->baseFilename, 0, -1);
$this->baseFilename = RemoveExtension($this->baseFilename);
if (strrpos($this->baseFilename, '/'))
$this->baseFilename = substr($this->baseFilename, strrpos($this->baseFilename, '/') + 1);
if (strpos($manifest, "?"))
$this->baseFilename = md5(substr($manifest, 0, strpos($manifest, "?"))) . "_" . $this->baseFilename;
else
$this->baseFilename = md5($manifest) . "_" . $this->baseFilename;
$this->baseFilename .= "Seg" . $segNum . "-Frag";
if ($fragNum >= $this->fragCount)
LogError("No fragment available for downloading");
if (isHttpUrl($this->media['url']))
$this->fragUrl = $this->media['url'];
else
$this->fragUrl = $this->baseUrl . "/" . $this->media['url'];
$this->fragUrl = NormalizePath($this->fragUrl);
LogDebug("Base Fragment Url:\n" . $this->fragUrl . "\n");
LogDebug("Downloading Fragments:\n");
while (($fragNum < $this->fragCount) or $cc->active)
{
while ((count($cc->ch) < $this->parallel) and ($fragNum < $this->fragCount))
{
$frag = array();
$fragNum = $fragNum + 1;
$frag['id'] = $fragNum;
LogInfo("Downloading $fragNum/$this->fragCount fragments", true);
if (in_array_field($fragNum, "firstFragment", $this->fragTable, true))
$this->discontinuity = value_in_array_field($fragNum, "firstFragment", "discontinuityIndicator", $this->fragTable, true);
else
{
$closest = 1;
foreach ($this->fragTable as $item)
{
if ($item['firstFragment'] < $fragNum)
$closest = $item['firstFragment'];
else
break;
}
$this->discontinuity = value_in_array_field($closest, "firstFragment", "discontinuityIndicator", $this->fragTable, true);
}
if (($this->discontinuity == 1) or ($this->discontinuity == 3))
{
LogDebug("Skipping fragment $fragNum due to discontinuity");
$frag['response'] = false;
$this->rename = true;
}
else if (file_exists($this->baseFilename . $fragNum))
{
LogDebug("Fragment $fragNum is already downloaded");
$frag['response'] = file_get_contents($this->baseFilename . $fragNum);
}
if (isset($frag['response']))
{
if ($this->WriteFragment($frag, $opt) === 2)
break 2;
else
continue;
}
/* Increase or decrease segment number if current fragment is not available */
/* in selected segment range */
if (count($this->segTable) > 1)
{
if ($fragNum > ($segNum * $this->fragsPerSeg))
$segNum++;
else if ($fragNum <= (($segNum - 1) * $this->fragsPerSeg))
$segNum--;
}
LogDebug("Adding fragment $fragNum to download queue");
$cc->addDownload($this->fragUrl . "Seg" . $segNum . "-Frag" . $fragNum . $this->auth, $fragNum);
}
$downloads = $cc->checkDownloads();
if ($downloads !== false)
{
for ($i = 0; $i < count($downloads); $i++)
{
$frag = array();
$download = $downloads[$i];
$frag['id'] = $download['id'];
if ($download['status'] == 200)
{
if ($this->VerifyFragment($download['response']))
{
LogDebug("Fragment " . $this->baseFilename . $download['id'] . " successfully downloaded");
if (!($this->live or $this->play))
file_put_contents($this->baseFilename . $download['id'], $download['response']);
$frag['response'] = $download['response'];
}
else
{
LogDebug("Fragment " . $download['id'] . " failed to verify");
LogDebug("Adding fragment " . $download['id'] . " to download queue");
$cc->addDownload($download['url'], $download['id']);
}
}
else if ($download['status'] === false)
{
LogDebug("Fragment " . $download['id'] . " failed to download");
LogDebug("Adding fragment " . $download['id'] . " to download queue");
$cc->addDownload($download['url'], $download['id']);
}
else if ($download['status'] == 403)
LogError("Access Denied! Unable to download fragments.");
else
{
LogDebug("Fragment " . $download['id'] . " doesn't exist, Status: " . $download['status']);
$frag['response'] = false;
$this->rename = true;
/* Resync with latest available fragment when we are left behind due to */
/* slow connection and short live window on streaming server. make sure */
/* to reset the last written fragment. */
if ($this->live and ($i + 1 == count($downloads)) and !$cc->active)
{
LogDebug("Trying to resync with latest available fragment");
if ($this->WriteFragment($frag, $opt) === 2)
break 2;
unset($frag['response']);
$this->UpdateBootstrapInfo($cc, $this->bootstrapUrl);
$fragNum = $this->fragCount - 1;
$this->lastFrag = $fragNum;
}
}
if (isset($frag['response']))
if ($this->WriteFragment($frag, $opt) === 2)
break 2;
}
unset($downloads, $download);
}
if ($this->live and ($fragNum >= $this->fragCount) and !$cc->active)
$this->UpdateBootstrapInfo($cc, $this->bootstrapUrl);
}
LogInfo("");
LogDebug("\nAll fragments downloaded successfully\n");
$cc->stopDownloads();
$this->processed = true;
}
function VerifyFragment(&$frag)
{
LogDebug("In F4F.VerifyFragment()");
$fragPos = 0;
$fragLen = strlen($frag);
/* Some moronic servers add wrong boxSize in header causing fragment verification *
* to fail so we have to fix the boxSize before processing the fragment. */
while ($fragPos < $fragLen)
{
ReadBoxHeader($frag, $fragPos, $boxType, $boxSize);
if ($boxType == "mdat")
{
$len = strlen(substr($frag, $fragPos, $boxSize));
if ($boxSize and ($len == $boxSize))
return true;
else
{
$boxSize = $fragLen - $fragPos;
WriteBoxSize($frag, $boxType, $boxSize);
return true;
}
}
$fragPos += $boxSize;
}
return false;
}
function RenameFragments($baseFilename, $fragNum, $fileExt)
{
LogDebug("In F4F.RenameFragments()");
$files = array();
$retries = 0;
while (true)
{
if ($retries >= 50)
break;
$file = $baseFilename . ++$fragNum;
if (file_exists($file))
{
$files[] = $file;
$retries = 0;
}
else if (file_exists($file . $fileExt))
{
$files[] = $file;
$retries = 0;
}
else
$retries++;
}
$fragCount = count($files);
natsort($files);
for ($i = 0; $i < $fragCount; $i++)
rename($files[$i], $baseFilename . ($i + 1));
}
function WriteMetadata($flv = false)
{
LogDebug("In F4F.WriteMetadata()");
if (isset($this->media) and $this->media['metadata'])
{
$metadataSize = strlen($this->media['metadata']);
WriteByte($metadata, 0, SCRIPT_DATA);
WriteInt24($metadata, 1, $metadataSize);
WriteInt24($metadata, 4, 0);
WriteInt32($metadata, 7, 0);
$metadata = implode("", $metadata) . $this->media['metadata'];
WriteByte($metadata, $this->tagHeaderLen + $metadataSize - 1, 0x09);