gistfile1.php

<?php

require_once 'IO/SWF/Editor.php';
require_once 'IO/SWF/JPEG.php';


class File_SWF
{
    const SWF_TAG_End                          = 0;
    const SWF_TAG_ShowFrame                    = 1;
    const SWF_TAG_DefineShape                  = 2;
    const SWF_TAG_PlaceObject                  = 4;
    const SWF_TAG_RemoveObject                 = 5;
    const SWF_TAG_DefineBits                   = 6;
    const SWF_TAG_DefineButton                 = 7;
    const SWF_TAG_JPEGTables                   = 8;
    const SWF_TAG_SetBackgroundColor           = 9;
    const SWF_TAG_DefineFont                   = 10;
    const SWF_TAG_DefineText                   = 11;
    const SWF_TAG_DoAction                     = 12;
    const SWF_TAG_DefineFontInfo               = 13;
    const SWF_TAG_DefineSound                  = 14;
    const SWF_TAG_StartSound                   = 15;
    const SWF_TAG_DefineButtonSound            = 17;
    const SWF_TAG_SoundStreamHead              = 18;
    const SWF_TAG_SoundStreamBlock             = 19;
    const SWF_TAG_DefineBitsLossless           = 20;
    const SWF_TAG_DefineBitsJPEG2              = 21;
    const SWF_TAG_DefineShape2                 = 22;
    const SWF_TAG_DefineButtonCxform           = 23;
    const SWF_TAG_Protect                      = 24;
    const SWF_TAG_PlaceObject2                 = 26;
    const SWF_TAG_RemoveObject2                = 28;
    const SWF_TAG_DefineShape3                 = 32;
    const SWF_TAG_DefineText2                  = 33;
    const SWF_TAG_DefineButton2                = 34;
    const SWF_TAG_DefineBitsJPEG3              = 35;
    const SWF_TAG_DefineBitsLossless2          = 36;
    const SWF_TAG_DefineEditText               = 37;
    const SWF_TAG_DefineSprite                 = 39;
    const SWF_TAG_FrameLabel                   = 43;
    const SWF_TAG_SoundStreamHead2             = 45;
    const SWF_TAG_DefineMorphShape             = 46;
    const SWF_TAG_DefineFont2                  = 48;
    const SWF_TAG_ExportAssets                 = 56;
    const SWF_TAG_ImportAssets                 = 57;
    const SWF_TAG_EnableDebugger               = 58;
    const SWF_TAG_DoInitAction                 = 59;
    const SWF_TAG_DefineVideoStream            = 60;
    const SWF_TAG_VideoFrame                   = 61;
    const SWF_TAG_DefineFontInfo2              = 62;
    const SWF_TAG_EnableDebugger2              = 64;
    const SWF_TAG_ScriptLimits                 = 65;
    const SWF_TAG_SetTabIndex                  = 66;
    const SWF_TAG_FileAttributes               = 69;
    const SWF_TAG_PlaceObject3                 = 70;
    const SWF_TAG_ImportAssets2                = 71;
    const SWF_TAG_DefineFontAlignZones         = 73;
    const SWF_TAG_CSMTextSettings              = 74;
    const SWF_TAG_DefineFont3                  = 75;
    const SWF_TAG_SymbolClass                  = 76;
    const SWF_TAG_Metadata                     = 77;
    const SWF_TAG_DefineScalingGrid            = 78;
    const SWF_TAG_DoABC                        = 82;
    const SWF_TAG_DefineShape4                 = 83;
    const SWF_TAG_DefineMorphShape2            = 84;
    const SWF_TAG_DefineSceneAndFrameLabelData = 86;
    const SWF_TAG_DefineBinaryData             = 87;
    const SWF_TAG_DefineFontName               = 88;
    const SWF_TAG_StartSound2                  = 89;
    const SWF_TAG_DefineBitsJPEG4              = 90;
    const SWF_TAG_DefineFont4                  = 91;

    const IMAGE_TYPE_NONE = 0;
    const IMAGE_TYPE_JPEG = 1;
    const IMAGE_TYPE_GIF  = 2;
    const IMAGE_TYPE_PNG  = 3;


    protected $_swfeditor;


    function __construct($content)
    {
        $this->_swfeditor = new IO_SWF_Editor();
        $this->_swfeditor->parse($content);
        $this->_swfeditor->setCharacterId();
    }

    public function getSignature()
    {
        return $this->_swfeditor->_headers['Signature'];
    }

    public function getVersion()
    {
        return $this->_swfeditor->_headers['Version'];
    }

    public function getLength()
    {
        return $this->_swfeditor->_headers['FileLength'];
    }

    public function getFrameRate()
    {
        return $this->_swfeditor->_headers['FrameRate'] / 256;
    }

    public function getFrameCount()
    {
        return $this->_swfeditor->_headers['FrameCount'];
    }

    public function getBackgroundColor()
    {
        return unpack('C*', $this->_swfeditor->getTagContent(self::SWF_TAG_SetBackgroundColor));
    }

    public function setBackgroundColor($r, $g, $b)
    {
        $color = pack('C*', $r, $g, $b);

        $this->_swfeditor->replaceTagContent(self::SWF_TAG_SetBackgroundColor, $color);

        return $this;
    }

    public function setImage($image_id, $content, $image_type)
    {
        $tag_code = array(
            self::SWF_TAG_DefineBits,
            self::SWF_TAG_DefineBitsJPEG2,
            self::SWF_TAG_DefineBitsJPEG3,
        );

        switch ($image_type) {
        case self::IMAGE_TYPE_JPEG:
            $jpeg = new IO_SWF_JPEG();
            $jpeg->input($content);

            $jpeg_table = $jpeg->getEncodingTables();
            $jpeg_image = $jpeg->getImageData();

            $content = pack('v', $image_id).$jpeg_table.$jpeg_image;
            break;

        case self::IMAGE_TYPE_GIF:
            $content = pack('v', $image_id).$content;
            break;

        case self::IMAGE_TYPE_PNG:
            $content = pack('v', $image_id).$content;
            break;
        }

        $tag = array('Code' => self::SWF_TAG_DefineBitsJPEG2, 'Content' => $content);
        $ret = $this->_swfeditor->replaceTagByCharacterId($tag_code, $image_id, $tag);
        /* var_dump($ret); */
        /* exit; */

        return $this;
    }

    public function build()
    {
        return $this->_swfeditor->build();
    }
}