rik/plibreader
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add write support for ID3v2 frames

Browse Source 
git-svn-id: http://php-reader.googlecode.com/svn/trunk@65 51a70ab9-7547-0410-9469-37e369ee0574
This commit is contained in:
svollbehr
2008-04-02 15:22:46 +00:00
parent 458335dc9f
commit ad6a722bae
88 changed files with 1857 additions and 337 deletions
Download Patch File Download Diff File Expand all files Collapse all files

99
src/ID3/Frame/RVA2.php
View File

@@ -70,15 +70,8 @@ final class ID3_Frame_RVA2 extends ID3_Frame
* @var Array
*/
public static $types = array
(0x00 => "Other",
0x01 => "Master volume",
0x02 => "Front right",
0x03 => "Front left",
0x04 => "Back right",
0x05 => "Back left",
0x06 => "Front centre",
0x07 => "Back centre",
0x08 => "Subwoofer");
("Other", "Master volume", "Front right", "Front left", "Back right",
"Back left", "Front centre", "Back centre", "Subwoofer");
/** @var string */
private $_device;
@@ -91,33 +84,44 @@ final class ID3_Frame_RVA2 extends ID3_Frame
*
* @param Reader $reader The reader object.
*/
public function __construct($reader)
public function __construct($reader = null)
{
parent::__construct($reader);
if ($reader === null)
return;
list ($this->_device, $this->_data) =
preg_split("/\\x00/", $this->_data, 2);
for ($i = $j = 0; $i < 9; $i++) {
$this->_adjustments[$i] = array
("channelType" => substr($this->_data, $j++, 1),
("channelType" => Transform::fromInt8($this->_data[$j++]),
"volumeAdjustment" =>
Transform::fromInt16BE(substr($this->_data, $j++, 2)));
$bitsInPeak = ord(substr($this->_data, (++$j)++, 1));
$bitsInPeak = Transform::fromInt8($this->_data[(++$j)++]);
$bytesInPeak = $bitsInPeak > 0 ? ceil($bitsInPeak / 8) : 0;
switch ($bytesInPeak) {
case 32:
case 24:
$this->_adjustments[$i]["peakVolume"] =
Transform::fromInt32BE(substr($this->_data, $j, $bytesInPeak));
$j += $bytesInPeak;
break;
case 16:
$this->_adjustments[$i]["peakVolume"] =
Transform::fromInt16BE(substr($this->_data, $j, $bytesInPeak));
$j += $bytesInPeak;
break;
case 8:
case 7:
case 6:
case 5:
$this->_adjustments[$i]["peakVolume"] =
Transform::fromInt64BE(substr($this->_data, $j, $bytesInPeak));
$j += $bytesInPeak;
break;
case 4:
case 3:
$this->_adjustments[$i]["peakVolume"] =
Transform::fromUInt32BE(substr($this->_data, $j, $bytesInPeak));
$j += $bytesInPeak;
break;
case 2:
$this->_adjustments[$i]["peakVolume"] =
Transform::fromUInt16BE(substr($this->_data, $j, $bytesInPeak));
$j += $bytesInPeak;
break;
case 1:
$this->_adjustments[$i]["peakVolume"] =
Transform::fromInt8(substr($this->_data, $j, $bytesInPeak));
$j += $bytesInPeak;
@@ -132,6 +136,13 @@ final class ID3_Frame_RVA2 extends ID3_Frame
*/
public function getDevice() { return $this->_device; }
/**
* Sets the device where the adjustments should apply.
*
* @param string $device The device.
*/
public function setDevice($device) { $this->_device = $device; }
/**
* Returns the array containing volume adjustments for each channel. Volume
* adjustments are arrays themselves containing the following keys:
@@ -140,4 +151,44 @@ final class ID3_Frame_RVA2 extends ID3_Frame
* @return Array
*/
public function getAdjustments() { return $this->_adjustments; }
/**
* Sets the array of volume adjustments for each channel. Each volume
* adjustment is an array too containing the following keys: channelType,
* volumeAdjustment, peakVolume.
*
* @param Array $adjustments The volume adjustments array.
*/
public function setAdjustments($adjustments)
{
$this->_adjustments = $adjustments;
}
/**
* Returns the frame raw data.
*
* @return string
*/
public function __toString()
{
$data = $this->_device . "\0";
foreach ($this->_adjustments as $channel) {
$data .= Transform::toInt8($channel["channelType"]) .
Transform::toInt16BE($channel["volumeAdjustment"]);
if ($channel["peakVolume"] < 255)
$data .= Transform::toInt8(8) .
Transform::toInt8($channel["peakVolume"]);
else if ($channel["peakVolume"] < 65535)
$data .= Transform::toInt8(16) .
Transform::toUInt16BE($channel["peakVolume"]);
else if ($channel["peakVolume"] < 4294967295)
$data .= Transform::toInt8(32) .
Transform::toUInt32BE($channel["peakVolume"]);
else
$data .= Transform::toInt8(64) .
Transform::toUInt64BE($channel["peakVolume"]);
}
$this->setData($data);
return parent::__toString();
}
}