function analyze()
{
$bits = new FLV_Util_BitStreamReader($this->body);
$this->codec = $bits->getInt(4);
$this->frequency = $bits->getInt(2);
$this->depth = $bits->getInt(1);
$this->mode = $bits->getInt(1);
}
function analyze()
{
$bits = new FLV_Util_BitStreamReader($this->body);
$this->codec = $bits->getInt(4);
$this->codec_name = $this->audioFormat($this->codec);
$this->frequency = $bits->getInt(2);
$this->frequency_rate = $this->audioFormat($this->frequency);
$this->depth = $bits->getInt(1);
$this->depth_bit = $this->audioBitDepth($this->depth);
$this->mode = $bits->getInt(1);
$this->mode_name = $this->audioMode($this->mode);
}
function analyze()
{
$bits = new FLV_Util_BitStreamReader($this->body);
$this->frametype = $bits->getInt(4);
$this->codec = $bits->getInt(4);
$this->codec_name = $this->videoCodec($this->codec);
switch ($this->codec) {
case $this->CODEC_SORENSON_H263:
//skip video packet header
$bits->seek(17 + 5 + 8, SEEK_CUR);
$type = $bits->getInt(3);
switch ($type) {
case 0x0:
$this->width = $bits->getInt(8);
$this->height = $bits->getInt(8);
break;
case 0x1:
$this->width = $bits->getInt(16);
$this->height = $bits->getInt(16);
break;
case 0x2:
//CIF
$this->width = 352;
$this->height = 288;
break;
case 0x3:
//QCIF
$this->width = 176;
$this->height = 144;
break;
case 0x4:
//SQCIF
$this->width = 128;
$this->height = 96;
break;
case 0x5:
$this->width = 320;
$this->height = 240;
break;
case 0x6:
$this->width = 160;
$this->height = 120;
break;
}
break;
case $this->CODEC_SORENSON:
$bits->seek(4, SEEK_CUR);
$this->width = $bits->getInt(12);
$bits->seek(4, SEEK_CUR);
$this->height = $bits->getInt(12);
break;
// format layout taken from libavcodec project (http://ffmpeg.mplayerhq.hu/)
// format layout taken from libavcodec project (http://ffmpeg.mplayerhq.hu/)
case $this->CODEC_ON2_VP6:
if ($this->frametype == 1) {
$adjW = $bits->getInt(4);
$adjH = $bits->getInt(4);
$mode = $bits->getInt(1);
if ($mode === 0) {
$bits->seek(15, SEEK_CUR);
$this->height = $bits->getInt(8) * 16 - $adjH;
$this->width = $bits->getInt(8) * 16 - $adjW;
}
}
break;
case $this->CODEC_ON2_VP6ALPHA:
if ($this->frametype == 1) {
$adjW = $bits->getInt(4);
$adjH = $bits->getInt(4);
$mode = $bits->getInt(1);
if ($mode === 0) {
$bits->seek(39, SEEK_CUR);
$this->height = $bits->getInt(8) * 16 - $adjH;
$this->width = $bits->getInt(8) * 16 - $adjW;
}
}
break;
/* TODO: not tested */
/* TODO: not tested */
case $this->CODEC_SCREENVIDEO_2:
$this->width = $bits->getInt(12);
$this->height = $bits->getInt(12);
break;
default:
break;
}
}
