line |
stmt |
bran |
cond |
sub |
pod |
time |
code |
1
|
|
|
|
|
|
|
package IO::SWF::JPEG; |
2
|
|
|
|
|
|
|
|
3
|
1
|
|
|
1
|
|
21548
|
use strict; |
|
1
|
|
|
|
|
2
|
|
|
1
|
|
|
|
|
35
|
|
4
|
1
|
|
|
1
|
|
4
|
use warnings; |
|
1
|
|
|
|
|
2
|
|
|
1
|
|
|
|
|
25
|
|
5
|
|
|
|
|
|
|
|
6
|
1
|
|
|
1
|
|
5
|
use base 'Class::Accessor::Fast'; |
|
1
|
|
|
|
|
1
|
|
|
1
|
|
|
|
|
770
|
|
7
|
|
|
|
|
|
|
|
8
|
|
|
|
|
|
|
use IO::SWF::Bit; |
9
|
|
|
|
|
|
|
use Digest::MD5; |
10
|
|
|
|
|
|
|
|
11
|
|
|
|
|
|
|
__PACKAGE__->mk_accessors( qw( |
12
|
|
|
|
|
|
|
_jpegdata |
13
|
|
|
|
|
|
|
_jpegChunk |
14
|
|
|
|
|
|
|
)); |
15
|
|
|
|
|
|
|
|
16
|
|
|
|
|
|
|
our %marker_name_table = ( |
17
|
|
|
|
|
|
|
0xD8 => 'SOI', |
18
|
|
|
|
|
|
|
0xE0 => 'APP0', 0xE1 => 'APP1', 0xE2 => 'APP2', 0xE3 => 'APP3', |
19
|
|
|
|
|
|
|
0xE4 => 'APP4', 0xE5 => 'APP5', 0xE6 => 'APP6', 0xE7 => 'APP7', |
20
|
|
|
|
|
|
|
0xE8 => 'APP8', 0xE9 => 'APP9', 0xEA => 'APP10', 0xEB => 'APP11', |
21
|
|
|
|
|
|
|
0xEC => 'APP12', 0xED => 'APP13', 0xEE => 'APP14', 0xEF => 'APP15', |
22
|
|
|
|
|
|
|
0xFE => 'COM', |
23
|
|
|
|
|
|
|
0xDB => 'DQT', |
24
|
|
|
|
|
|
|
0xC0 => 'SOF0', 0xC1 => 'SOF1', 0xC2 => 'SOF2', 0xC3 => 'SOF3', |
25
|
|
|
|
|
|
|
0xC5 => 'SOF5', 0xC6 => 'SOF6', 0xC7 => 'SOF7', |
26
|
|
|
|
|
|
|
0xC8 => 'JPG', 0xC9 => 'SOF9', 0xCA => 'SOF10', 0xCB => 'SOF11', |
27
|
|
|
|
|
|
|
0xCC => 'DAC', 0xCD => 'SOF13', 0xCE => 'SOF14', 0xCF => 'SOF15', |
28
|
|
|
|
|
|
|
0xC4 => 'DHT', |
29
|
|
|
|
|
|
|
0xDA => 'SOS', |
30
|
|
|
|
|
|
|
0xD0 => 'RST0', 0xD1 => 'RST1', 0xD2 => 'RST2', 0xD3 => 'RST3', |
31
|
|
|
|
|
|
|
0xD4 => 'RST4', 0xD5 => 'RST5', 0xD6 => 'RST6', 0xD7 => 'RST7', |
32
|
|
|
|
|
|
|
0xDD => 'DRI', |
33
|
|
|
|
|
|
|
0xD9 => 'EOI', |
34
|
|
|
|
|
|
|
0xDC => 'DNL', 0xDE => 'DHP', 0xDF => 'EXP', |
35
|
|
|
|
|
|
|
0xF0 => 'JPG0', 0xF1 => 'JPG1', 0xF2 => 'JPG2', 0xF3 => 'JPG3', |
36
|
|
|
|
|
|
|
0xF4 => 'JPG4', 0xF5 => 'JPG5', 0xF6 => 'JPG6', 0xF7 => 'JPG7', |
37
|
|
|
|
|
|
|
0xF8 => 'JPG8', 0xF9 => 'JPG9', 0xFA => 'JPG10', 0xFB => 'JPG11', |
38
|
|
|
|
|
|
|
0xFC => 'JPG12', 0xFD => 'JPG13' |
39
|
|
|
|
|
|
|
); |
40
|
|
|
|
|
|
|
|
41
|
|
|
|
|
|
|
sub new { |
42
|
|
|
|
|
|
|
my ($class, $args) = @_; |
43
|
|
|
|
|
|
|
my $self; |
44
|
|
|
|
|
|
|
if(ref $args eq 'HASH') { |
45
|
|
|
|
|
|
|
$self = $class->SUPER::new($args); |
46
|
|
|
|
|
|
|
}else{ |
47
|
|
|
|
|
|
|
$self = $class->SUPER::new; |
48
|
|
|
|
|
|
|
} |
49
|
|
|
|
|
|
|
return $self; |
50
|
|
|
|
|
|
|
} |
51
|
|
|
|
|
|
|
|
52
|
|
|
|
|
|
|
sub input { |
53
|
|
|
|
|
|
|
my ($self, $jpegdata) = @_; |
54
|
|
|
|
|
|
|
$self->_jpegdata($jpegdata); |
55
|
|
|
|
|
|
|
} |
56
|
|
|
|
|
|
|
|
57
|
|
|
|
|
|
|
sub _splitChunk { |
58
|
|
|
|
|
|
|
my $self = shift; |
59
|
|
|
|
|
|
|
my $bitin = IO::SWF::Bit->new(); |
60
|
|
|
|
|
|
|
$bitin->input($self->_jpegdata); |
61
|
|
|
|
|
|
|
my $marker1; |
62
|
|
|
|
|
|
|
my @jpegChunk = (); |
63
|
|
|
|
|
|
|
while ($marker1 = $bitin->getUI8()) { |
64
|
|
|
|
|
|
|
if ($marker1 != 0xFF) { |
65
|
|
|
|
|
|
|
printf STDERR "dumpChunk: marker1=0x%02X", $marker1; |
66
|
|
|
|
|
|
|
return; |
67
|
|
|
|
|
|
|
} |
68
|
|
|
|
|
|
|
my $marker2 = $bitin->getUI8(); |
69
|
|
|
|
|
|
|
if ($marker2 == 0xD8) { |
70
|
|
|
|
|
|
|
# 0xD8: // SOI (Start of Image) |
71
|
|
|
|
|
|
|
push @jpegChunk, {'marker' => $marker2, 'data' => undef(), 'length' => undef()}; |
72
|
|
|
|
|
|
|
} |
73
|
|
|
|
|
|
|
elsif ($marker2 == 0xD9) { |
74
|
|
|
|
|
|
|
# 0xD9: // EOE (End of Image) |
75
|
|
|
|
|
|
|
push @jpegChunk, {'marker' => $marker2, 'data' => undef(), 'length' => undef()}; |
76
|
|
|
|
|
|
|
last; # while break; |
77
|
|
|
|
|
|
|
} |
78
|
|
|
|
|
|
|
elsif ($marker2 == 0xDA || # SOS |
79
|
|
|
|
|
|
|
$marker2 == 0xD0 || $marker2 == 0xD1 || $marker2 == 0xD2 || $marker2 == 0xD3 || # RST |
80
|
|
|
|
|
|
|
$marker2 == 0xD4 || $marker2 == 0xD5 || $marker2 == 0xD6 || $marker2 == 0xD7 # RST |
81
|
|
|
|
|
|
|
) { |
82
|
|
|
|
|
|
|
my ($chunk_data_offset, $dummy) = $bitin->getOffset(); |
83
|
|
|
|
|
|
|
while (1) { |
84
|
|
|
|
|
|
|
my $next_marker1 = $bitin->getUI8(); |
85
|
|
|
|
|
|
|
if ($next_marker1 != 0xFF) { |
86
|
|
|
|
|
|
|
next; |
87
|
|
|
|
|
|
|
} |
88
|
|
|
|
|
|
|
my $next_marker2 = $bitin->getUI8(); |
89
|
|
|
|
|
|
|
if ($next_marker2 == 0x00) { |
90
|
|
|
|
|
|
|
next; |
91
|
|
|
|
|
|
|
} |
92
|
|
|
|
|
|
|
|
93
|
|
|
|
|
|
|
$bitin->incrementOffset(-2, 0); # back from next marker |
94
|
|
|
|
|
|
|
my ($next_chunk_offset, $dummy) = $bitin->getOffset(); |
95
|
|
|
|
|
|
|
my $length = $next_chunk_offset - $chunk_data_offset; |
96
|
|
|
|
|
|
|
$bitin->setOffset($chunk_data_offset, 0); |
97
|
|
|
|
|
|
|
push @jpegChunk, {'marker' => $marker2, 'data' => $bitin->getData($length), 'length' => undef()}; |
98
|
|
|
|
|
|
|
last; |
99
|
|
|
|
|
|
|
} |
100
|
|
|
|
|
|
|
} |
101
|
|
|
|
|
|
|
else { |
102
|
|
|
|
|
|
|
my $length = $bitin->getUI16BE(); |
103
|
|
|
|
|
|
|
push @jpegChunk, {'marker' => $marker2, 'data' => $bitin->getData($length - 2), 'length' => $length}; |
104
|
|
|
|
|
|
|
} |
105
|
|
|
|
|
|
|
} |
106
|
|
|
|
|
|
|
$self->_jpegChunk(\@jpegChunk); |
107
|
|
|
|
|
|
|
} |
108
|
|
|
|
|
|
|
|
109
|
|
|
|
|
|
|
# from: SOI APP* DQT SOF* DHT SOS EOI |
110
|
|
|
|
|
|
|
# to: SOI APP* SOF* SOS EOI |
111
|
|
|
|
|
|
|
sub getImageData { |
112
|
|
|
|
|
|
|
my $self = shift; |
113
|
|
|
|
|
|
|
if (!$self->_jpegChunk || scalar(@{$self->_jpegChunk}) == 0) { |
114
|
|
|
|
|
|
|
$self->_splitChunk(); |
115
|
|
|
|
|
|
|
} |
116
|
|
|
|
|
|
|
my $bitout = IO::SWF::Bit->new(); |
117
|
|
|
|
|
|
|
foreach my $chunk (@{$self->_jpegChunk}) { |
118
|
|
|
|
|
|
|
my $marker = $chunk->{'marker'}; |
119
|
|
|
|
|
|
|
if (($marker == 0xDB) || ($marker == 0xC4)) { |
120
|
|
|
|
|
|
|
next; # skip DQT(0xDB) or DHT(0xC4) |
121
|
|
|
|
|
|
|
} |
122
|
|
|
|
|
|
|
$bitout->putUI8(0xFF); |
123
|
|
|
|
|
|
|
$bitout->putUI8($marker); |
124
|
|
|
|
|
|
|
if (!defined ($chunk->{'data'})) { # SOI or EOI |
125
|
|
|
|
|
|
|
# nothing to do |
126
|
|
|
|
|
|
|
} else { |
127
|
|
|
|
|
|
|
if (defined ($chunk->{'length'})) { |
128
|
|
|
|
|
|
|
$bitout->putUI16BE($chunk->{'length'}); |
129
|
|
|
|
|
|
|
} |
130
|
|
|
|
|
|
|
$bitout->putData($chunk->{'data'}); |
131
|
|
|
|
|
|
|
} |
132
|
|
|
|
|
|
|
} |
133
|
|
|
|
|
|
|
return $bitout->output(); |
134
|
|
|
|
|
|
|
} |
135
|
|
|
|
|
|
|
|
136
|
|
|
|
|
|
|
# from: SOI APP* DQT SOF* DHT SOS EOI |
137
|
|
|
|
|
|
|
# to: SOI DQT DHT EOI |
138
|
|
|
|
|
|
|
sub getEncodingTables { |
139
|
|
|
|
|
|
|
my $self = shift; |
140
|
|
|
|
|
|
|
if (!$self->_jpegChunk || scalar(@{$self->_jpegChunk}) == 0) { |
141
|
|
|
|
|
|
|
$self->_splitChunk(); |
142
|
|
|
|
|
|
|
} |
143
|
|
|
|
|
|
|
my $bitout = IO::SWF::Bit->new(); |
144
|
|
|
|
|
|
|
$bitout->putUI8(0xFF); |
145
|
|
|
|
|
|
|
$bitout->putUI8(0xD8); # SOI; |
146
|
|
|
|
|
|
|
foreach my $chunk (@{$self->_jpegChunk}) { |
147
|
|
|
|
|
|
|
my $marker = $chunk->{'marker'}; |
148
|
|
|
|
|
|
|
if (($marker != 0xDB) && ($marker != 0xC4)) { |
149
|
|
|
|
|
|
|
next; # skip not ( DQT(0xDB) or DHT(0xC4) ) |
150
|
|
|
|
|
|
|
} |
151
|
|
|
|
|
|
|
$bitout->putUI8(0xFF); |
152
|
|
|
|
|
|
|
$bitout->putUI8($marker); |
153
|
|
|
|
|
|
|
$bitout->putUI16BE($chunk->{'length'}); |
154
|
|
|
|
|
|
|
$bitout->putData($chunk->{'data'}); |
155
|
|
|
|
|
|
|
} |
156
|
|
|
|
|
|
|
$bitout->putUI8(0xFF); |
157
|
|
|
|
|
|
|
$bitout->putUI8(0xD9); # EOI; |
158
|
|
|
|
|
|
|
return $bitout->output(); |
159
|
|
|
|
|
|
|
} |
160
|
|
|
|
|
|
|
|
161
|
|
|
|
|
|
|
sub dumpChunk { # for debug |
162
|
|
|
|
|
|
|
my $self = shift; |
163
|
|
|
|
|
|
|
if (!$self->_jpegChunk || scalar(@{$self->_jpegChunk}) == 0) { |
164
|
|
|
|
|
|
|
$self->_splitChunk(); |
165
|
|
|
|
|
|
|
} |
166
|
|
|
|
|
|
|
foreach my $chunk (@{$self->_jpegChunk}) { |
167
|
|
|
|
|
|
|
my $marker = $chunk->{'marker'}; |
168
|
|
|
|
|
|
|
my $marker_name = $marker_name_table{$marker}; |
169
|
|
|
|
|
|
|
if (!defined ($chunk->{'data'})) { |
170
|
|
|
|
|
|
|
print "$marker_name:\n"; |
171
|
|
|
|
|
|
|
} else { |
172
|
|
|
|
|
|
|
my $length = length($chunk->{'data'}); |
173
|
|
|
|
|
|
|
my $md5 = Digest::MD5->new(); |
174
|
|
|
|
|
|
|
$md5->add($chunk->{'data'}); |
175
|
|
|
|
|
|
|
my $hash = $md5->hexdigest(); |
176
|
|
|
|
|
|
|
print "$marker_name: length=$length md5=$hash\n"; |
177
|
|
|
|
|
|
|
} |
178
|
|
|
|
|
|
|
} |
179
|
|
|
|
|
|
|
} |
180
|
|
|
|
|
|
|
|
181
|
|
|
|
|
|
|
1; |