function parse($sfdata)
{
$reader = new IO_Bit();
$reader->input($sfdata);
$length = strlen($sfdata);
$id = $reader->getData(4);
// 'RIFF'
if ($id !== 'RIFF') {
throw new IO_SoundFont_Exception("non RIFF fourcc");
}
$size = $reader->getUI32LE();
if ($length !== $size + 8) {
fputs(STDERR, "parse: illegal length({$length}) and RIFF size({$size})\n");
}
$id = $reader->getData(4);
// 'sfbk'
if ($id !== 'sfbk') {
throw new IO_SoundFont_Exception("non sfbk fourcc");
}
$info = $this->parseChunkLIST($reader);
$sdta = $this->parseChunkLIST($reader);
$pdta = $this->parseChunkLIST($reader);
$this->sfbk = array('INFO' => $info, 'sdta' => $sdta, 'pdta' => $pdta);
return true;
}
function parseContent($tagCode, $content, $opts = array())
{
$reader = new IO_Bit();
$reader->input($content);
$this->SoundId = $reader->getUI16LE();
// ---
$this->SoundFormat = $reader->getUIBits(4);
$this->SoundRate = $reader->getUIBits(2);
$this->SoundSize = $reader->getUIBit();
$this->SoundType = $reader->getUIBit();
// ---
$this->SoundSampleCount = $reader->getUI32LE();
$this->SoundData = $reader->getDataUntil(false);
}
function parse($swfdata)
{
$reader = new IO_Bit();
$reader->input($swfdata);
$this->_swfdata = $swfdata;
/* SWF Header */
$this->_headers['Signature'] = $reader->getData(3);
$this->_headers['Version'] = $reader->getUI8();
$this->_headers['FileLength'] = $reader->getUI32LE();
if ($this->_headers['Signature'][0] == 'C') {
// CWS の場合、FileLength の後ろが zlib 圧縮されている
$uncompressed_data = gzuncompress(substr($swfdata, 8));
if ($uncompressed_data === false) {
return false;
}
list($byte_offset, $dummy) = $reader->getOffset();
$reader->setOffset(0, 0);
$swfdata = $reader->getData($byte_offset) . $uncompressed_data;
$reader = new IO_Bit();
$reader->input($swfdata);
$this->_swfdata = $swfdata;
$reader->setOffset($byte_offset, 0);
}
/* SWF Movie Header */
$this->_headers['FrameSize'] = IO_SWF_Type_RECT::parse($reader);
$reader->byteAlign();
$this->_headers['FrameRate'] = $reader->getUI16LE();
$this->_headers['FrameCount'] = $reader->getUI16LE();
list($this->_header_size, $dummy) = $reader->getOffset();
/* SWF Tags */
while (true) {
$swfInfo = array('Version' => $this->_headers['Version']);
$tag = new IO_SWF_Tag($swfInfo);
$tag->parse($reader);
$this->_tags[] = $tag;
if ($tag->code == 0) {
// END Tag
break;
}
}
return true;
}
function parseContent($tagCode, $content, $opts = array())
{
$reader = new IO_Bit();
$reader->input($content);
if ($tagCode != 8) {
// ! JPEGTable
$this->_CharacterID = $reader->getUI16LE();
}
if ($tagCode == 35) {
// DefgineBitsJPEG3
$alphaDataOffset = $reader->getUI32LE();
$this->_AlphaDataOffset = $alphaDataOffset;
}
if ($tagCode != 35) {
// ! DefgineBitsJPEG3
$this->_JPEGData = $reader->getDataUntil(false);
} else {
$this->_JPEGData = $reader->getData($alphaDataOffset);
$this->_ZlibBitmapAlphaData = $reader->getDataUntil(false);
}
}
function parseChunkData()
{
if (isset($this->detail)) {
return;
}
$detailData = array();
$id = $this->id;
$reader = new IO_Bit();
$reader->input($this->data);
$this->data = null;
// XXX
switch ($id) {
// INFO sub-chunks
case 'ifil':
$detailData['sfVersionMajor'] = $reader->getUI16LE();
$detailData['sfVersionMinor'] = $reader->getUI16LE();
break;
case 'INAM':
$detailData['sfName'] = $this->data;
// String
break;
case 'isng':
$detailData['sfEngine'] = $this->data;
// String
break;
case 'IENG':
$detailData['sfEngineers'] = $this->data;
// String
break;
case 'ISFT':
$detailData['sfTools'] = $this->data;
// String
break;
case 'ICMT':
$detailData['Comments'] = $this->data;
// String
break;
case 'ICOP':
$detailData['Copyright'] = $this->data;
// String
break;
// sdta sub-chunks
// sdta sub-chunks
case 'smpl':
$detailData['Samples'] = $this->data;
// String
break;
// pdta sub-chunks
// pdta sub-chunks
case 'phdr':
$detailData = array();
while ($reader->hasNextData()) {
$preset = array();
$presetName = explode("", $reader->getData(20));
$preset['PresetName'] = $presetName[0];
$preset['Preset'] = $reader->getUI16LE();
$preset['Bank'] = $reader->getUI16LE();
$preset['PresetBagNdx'] = $reader->getUI16LE();
$preset['Library'] = $reader->getUI32LE();
$preset['Genre'] = $reader->getUI32LE();
$preset['MorphologyGenre'] = $reader->getUI32LE();
$detailData[] = $preset;
}
break;
case 'pbag':
$detailData = array();
while ($reader->hasNextData()) {
$presetBag = array();
$presetBag['GenNdx'] = $reader->getUI16LE();
$presetBag['ModNdx'] = $reader->getUI16LE();
$detailData[] = $presetBag;
}
break;
case 'pmod':
case 'imod':
$detailData = array();
while ($reader->hasNextData()) {
$sfMod = array();
$sfMod['sfModSrcOper'] = IO_SoundFont_Modulator::parse($reader);
$sfMod['sfModDestOper'] = $reader->getUI16LE();
$sfMod['modAmount'] = $reader->getSI16LE();
$sfMod['sfModAmtSrcOper'] = IO_SoundFont_Modulator::parse($reader);
$sfMod['sfModTransOper'] = $reader->getUI16LE();
$detailData[] = $sfMod;
}
break;
case 'pgen':
case 'igen':
$detailData = array();
while ($reader->hasNextData()) {
$detailData[] = IO_SoundFont_Generator::parse($reader);
}
break;
case 'inst':
$detailData = array();
while ($reader->hasNextData()) {
$sfInst = array();
$InstName = explode("", $reader->getData(20));
$sfInst['InstName'] = $InstName[0];
$sfInst['InstBagNdx'] = $reader->getSI16LE();
$detailData[] = $sfInst;
}
break;
case 'ibag':
$detailData = array();
while ($reader->hasNextData()) {
$presetBag = array();
$presetBag['GenNdx'] = $reader->getUI16LE();
$presetBag['ModNdx'] = $reader->getUI16LE();
$detailData[] = $presetBag;
}
break;
case 'shdr':
$detailData = array();
while ($reader->hasNextData()) {
$sfSample = array();
$SampleName = explode("", $reader->getData(20));
$sfSample['SampleName'] = $SampleName[0];
$sfSample['Start'] = $reader->getUI32LE();
$sfSample['End'] = $reader->getUI32LE();
$sfSample['StartLoop'] = $reader->getUI32LE();
$sfSample['EndLoop'] = $reader->getUI32LE();
$sfSample['SampleRate'] = $reader->getUI32LE();
$sfSample['OriginalPitch'] = $reader->getUI8();
$sfSample['PitchCorrection'] = $reader->getSI8();
$sfSample['SampleLink'] = $reader->getUI16LE();
$sfSample['SampleType'] = $reader->getUI16LE();
$detailData[] = $sfSample;
}
break;
default:
return;
// nothing to do
break;
}
$this->detail = $detailData;
}
