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package IO::SWF; |
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use strict; |
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use warnings; |
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use base 'Class::Accessor::Fast'; |
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6662
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use IO::SWF::Bit; |
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use IO::SWF::Type::RECT; |
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use IO::SWF::Tag; |
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use Compress::Zlib; |
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__PACKAGE__->mk_accessors( qw( |
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_headers |
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_header_size |
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_tags |
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_swfdata |
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shape_adjust_mode |
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)); |
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sub new { |
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my ($class, $args) = @_; |
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my $self; |
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if(ref $args eq 'HASH') { |
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return $class->SUPER::new($args); |
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}else{ |
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return $class->SUPER::new; |
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} |
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} |
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sub _set_headers { |
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my ($self, %args) = @_; |
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my $header = $self->_headers ? $self->_headers : {}; |
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foreach my $key (keys %args) { |
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$header->{$key} = $args{$key}; |
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} |
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$self->_headers($header); |
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} |
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sub _set_tag { |
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my ($self, $tag) = @_; |
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my @tags = $self->_tags ? @{$self->_tags} : (); |
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push @tags, $tag; |
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$self->_tags(\@tags); |
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} |
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sub parse { |
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my ($self, $swfdata) = @_; |
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my $reader = IO::SWF::Bit->new(); |
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$reader->input($swfdata); |
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$self->_swfdata($swfdata); |
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## SWF Header ## |
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$self->_set_headers( |
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'Signature' => $reader->getData(3), |
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'Version' => $reader->getUI8(), |
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'FileLength' => $reader->getUI32LE(), |
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); |
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if (substr($self->_headers->{'Signature'}, 0, 1) eq 'C') { |
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# swf binary compressed by zlib |
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my $uncompressed_data = Compress::Zlib::memGunzip(substr($swfdata, 8)); |
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if (!defined $uncompressed_data) { |
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return 0; |
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} |
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my ($byte_offset, $dummy) = $reader->getOffset(); |
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$reader->setOffset(0, 0); |
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$swfdata = $reader->getData($byte_offset) . $uncompressed_data; |
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$reader = IO::SWF::Bit->new(); |
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$reader->input($swfdata); |
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$self->_swfdata($swfdata); |
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$reader->setOffset($byte_offset, 0); |
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} |
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## SWF Movie Header ## |
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my $ret = IO::SWF::Type::RECT::parse($reader); |
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$self->_set_headers('FrameSize' => $ret); |
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$reader->byteAlign(); |
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$self->_set_headers( |
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'FrameRate' => $reader->getUI16LE(), |
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'FrameCount' => $reader->getUI16LE(), |
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); |
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my ($header_size, $dummy) = $reader->getOffset(); |
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$self->_header_size($header_size); |
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## SWF Tags ## |
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while (1) { |
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my %swfInfo = ('Version' => $self->_headers->{'Version'}); |
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my $tag = IO::SWF::Tag->new(\%swfInfo); |
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$tag->parse($reader); |
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$self->_set_tag($tag); |
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if ($tag->code == 0) { # END Tag |
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last; |
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} |
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} |
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return 1; |
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} |
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sub build { |
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my $self = shift; |
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my $writer_head = IO::SWF::Bit->new(); |
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my $writer = IO::SWF::Bit->new(); |
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## SWF Header ## |
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$writer_head->putData($self->_headers->{'Signature'}); |
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$writer_head->putUI8($self->_headers->{'Version'}); |
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$writer_head->putUI32LE($self->_headers->{'FileLength'}); |
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## SWF Movie Header ## |
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IO::SWF::Type::RECT::build($writer, $self->_headers->{'FrameSize'}); |
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$writer->byteAlign(); |
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$writer->putUI16LE($self->_headers->{'FrameRate'}); |
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$writer->putUI16LE($self->_headers->{'FrameCount'}); |
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## SWF Tags ## |
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my $idx = 0; |
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foreach my $tag (@{$self->_tags}) { |
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my $tagData = $tag->build(); |
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if ($tagData) { |
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$writer->putData($tagData); |
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} |
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else { |
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die "tag build failed (tag idx=$idx)"; |
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} |
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$idx++; |
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} |
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my ($fileLength, $bit_offset_dummy) = $writer->getOffset(); |
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$fileLength += 8; # swf header |
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$self->_set_headers('FileLength' => $fileLength); |
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$writer_head->setUI32LE($fileLength, 4); |
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if (substr($self->_headers->{'Signature'}, 0, 1) eq 'C') { |
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return $writer_head->output() . Compress::Zlib::memGzip($writer->output()); |
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} |
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return $writer_head->output().$writer->output(); |
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} |
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sub dump { |
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my ($self, $opts_href) = @_; |
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my %opts = ref($opts_href) ? %{$opts_href} : (); |
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my $bitio; |
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if (defined $opts{'hexdump'}) { |
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$bitio = IO::SWF::Bit->new(); |
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$bitio->input($self->_swfdata); |
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} |
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## SWF Header ## |
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print 'Signature: '.$self->_headers->{'Signature'}."\n"; |
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print 'Version: '.$self->_headers->{'Version'}."\n"; |
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print 'FileLength: '.$self->_headers->{'FileLength'}."\n"; |
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print 'FrameSize: '. IO::SWF::Type::RECT::string($self->_headers->{'FrameSize'})."\n"; |
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print 'FrameRate: '.($self->_headers->{'FrameRate'} / 0x100)."\n"; |
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print 'FrameCount: '.$self->_headers->{'FrameCount'}."\n"; |
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if ($opts{'hexdump'}) { |
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$bitio->hexdump(0, $self->_header_size); |
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$opts{'bitio'} = $bitio; # for tag |
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} |
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## SWF Tags ## |
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print 'Tags:'."\n"; |
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foreach my $tag (@{$self->_tags}) { |
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$tag->dump(\%opts); |
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} |
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} |
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1; |