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#!/usr/bin/perl -w |
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|
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# amv.pl |
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# |
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# 07/19/07 19:21:39 CEST Dobrica Pavlinusic <dpavlin@rot13.org> |
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# |
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# Various useful links used to produce this: |
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# http://www.moviecodec.com/topics/15431p1.html |
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# http://en.wikipedia.org/wiki/RIFF_(File_format) |
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# http://www.obrador.com/essentialjpeg/HeaderInfo.htm |
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# http://lists.helixcommunity.org/pipermail/datatype-dev/2005-January/001886.html |
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|
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use strict; |
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|
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use Data::Dump qw/dump/; |
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use Carp qw/confess/; |
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use File::Path; |
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use Getopt::Long; |
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|
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my $dump = 0; |
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my $debug = 0; |
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my $dump_dir = '/tmp/dump/'; |
23 |
|
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GetOptions( |
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"dump!" => \$dump, |
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"debug!" => \$debug, |
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"dump-dir=s" => \$dump_dir, |
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); |
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|
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my $path = shift @ARGV || die "usage: $0 movie.amv\n"; |
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|
32 |
|
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rmtree $dump_dir if -e $dump_dir; |
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mkpath $dump_dir || die "can't create $dump_dir: $!"; |
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|
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open(my $fh, '<', $path) || die "can't open $path: $!"; |
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|
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# offset in file |
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my $o = 0; |
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|
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# shared data hash |
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my $d; |
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|
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sub hex_dump { |
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return unless $dump; |
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|
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my ( $bytes, $offset ) = @_; |
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return unless $bytes; |
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|
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my $old_o; |
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if (defined($offset)) { |
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$old_o = $o; |
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$o = $offset; |
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} |
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|
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my $ascii = $bytes; |
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$ascii =~ s/\W/./gs; |
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my $hex = uc( unpack('h*', $bytes) ); |
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$hex =~ s/(..)/$1 /g; |
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# calculate number of characters for offset |
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#my $d = length( sprintf("%x",length($bytes)) ); |
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my $d = 4; |
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my $prefix = '#.'; |
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while ( $hex =~ s/^((?:\w\w\s){1,16})// ) { |
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printf "$prefix %0${d}x | %-48s| %s\n", $o, $1, substr( $ascii, 0, 16 ); |
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$prefix = '##'; |
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if ( length($ascii) >= 16 ) { |
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$ascii = substr( $ascii, 16 ); |
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$o += 16; |
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} else { |
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$o += length($ascii); |
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last; |
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} |
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} |
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|
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$o = $old_o if $old_o; |
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} |
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|
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sub x { |
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my ($len,$format) = @_; |
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|
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my $bytes; |
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read($fh, $bytes, $len); |
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|
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my $r_len = length($bytes); |
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confess "read $r_len bytes, expected $len" if $len != $r_len; |
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|
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hex_dump( $bytes ); |
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|
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if ( $bytes eq 'AMV_END_' ) { |
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warn "> end of file marker AMV_END_\n"; |
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$d->{eof}++; |
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return; |
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} |
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|
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if ( $format ) { |
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my @data = unpack($format, $bytes); |
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warn "## unpacked = ",dump(@data),"\n" if $debug; |
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return @data; |
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} else { |
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return $bytes; |
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} |
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} |
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|
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sub next_part { |
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my ( $expected_part, $expected_len, $skip ) = @_; |
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my ( $part, $len ) = x(8,'A4V'); |
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return unless $len; |
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confess "not $expected_part but $part" if $expected_part ne $part; |
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if ( $expected_len ) { |
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confess "expected $expected_len bytes for $part got $len" if $len != $expected_len; |
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} |
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printf "<< %s - %d 0x%x bytes\n", $part, $len, $len; |
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x($len) if $skip; |
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return $len; |
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} |
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|
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sub huffman { |
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|
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# JPEG DHT Segment for YCrCb omitted from MJPG data |
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return |
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"\xFF\xC4\x01\xA2" . |
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"\x00\x00\x01\x05\x01\x01\x01\x01\x01\x01\x00\x00\x00\x00\x00" . |
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"\x00\x00\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B\x01" . |
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"\x00\x03\x01\x01\x01\x01\x01\x01\x01\x01\x01\x00\x00\x00\x00" . |
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"\x00\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B\x10\x00" . |
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"\x02\x01\x03\x03\x02\x04\x03\x05\x05\x04\x04\x00\x00\x01\x7D" . |
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"\x01\x02\x03\x00\x04\x11\x05\x12\x21\x31\x41\x06\x13\x51\x61" . |
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"\x07\x22\x71\x14\x32\x81\x91\xA1\x08\x23\x42\xB1\xC1\x15\x52" . |
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"\xD1\xF0\x24\x33\x62\x72\x82\x09\x0A\x16\x17\x18\x19\x1A\x25" . |
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"\x26\x27\x28\x29\x2A\x34\x35\x36\x37\x38\x39\x3A\x43\x44\x45" . |
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"\x46\x47\x48\x49\x4A\x53\x54\x55\x56\x57\x58\x59\x5A\x63\x64" . |
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"\x65\x66\x67\x68\x69\x6A\x73\x74\x75\x76\x77\x78\x79\x7A\x83" . |
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"\x84\x85\x86\x87\x88\x89\x8A\x92\x93\x94\x95\x96\x97\x98\x99" . |
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"\x9A\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9\xAA\xB2\xB3\xB4\xB5\xB6" . |
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"\xB7\xB8\xB9\xBA\xC2\xC3\xC4\xC5\xC6\xC7\xC8\xC9\xCA\xD2\xD3" . |
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"\xD4\xD5\xD6\xD7\xD8\xD9\xDA\xE1\xE2\xE3\xE4\xE5\xE6\xE7\xE8" . |
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"\xE9\xEA\xF1\xF2\xF3\xF4\xF5\xF6\xF7\xF8\xF9\xFA\x11\x00\x02" . |
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"\x01\x02\x04\x04\x03\x04\x07\x05\x04\x04\x00\x01\x02\x77\x00" . |
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"\x01\x02\x03\x11\x04\x05\x21\x31\x06\x12\x41\x51\x07\x61\x71" . |
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"\x13\x22\x32\x81\x08\x14\x42\x91\xA1\xB1\xC1\x09\x23\x33\x52" . |
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"\xF0\x15\x62\x72\xD1\x0A\x16\x24\x34\xE1\x25\xF1\x17\x18\x19" . |
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"\x1A\x26\x27\x28\x29\x2A\x35\x36\x37\x38\x39\x3A\x43\x44\x45" . |
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"\x46\x47\x48\x49\x4A\x53\x54\x55\x56\x57\x58\x59\x5A\x63\x64" . |
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"\x65\x66\x67\x68\x69\x6A\x73\x74\x75\x76\x77\x78\x79\x7A\x82" . |
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"\x83\x84\x85\x86\x87\x88\x89\x8A\x92\x93\x94\x95\x96\x97\x98" . |
147 |
"\x99\x9A\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9\xAA\xB2\xB3\xB4\xB5" . |
148 |
"\xB6\xB7\xB8\xB9\xBA\xC2\xC3\xC4\xC5\xC6\xC7\xC8\xC9\xCA\xD2" . |
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"\xD3\xD4\xD5\xD6\xD7\xD8\xD9\xDA\xE2\xE3\xE4\xE5\xE6\xE7\xE8" . |
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"\xE9\xEA\xF2\xF3\xF4\xF5\xF6\xF7\xF8\xF9\xFA"; |
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|
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} |
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|
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sub mkjpg { |
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my ($path,$data) = @_; |
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open(my $fh, '>', $path) || die "can't create $path: $!"; |
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|
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confess "no SOI marker in data" if substr($data,0,2) ne "\xFF\xD8"; |
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$data = substr($data,2); |
160 |
|
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my $w = $d->{amvh}->{width} || die "no width?"; |
162 |
my $h = $d->{amvh}->{height} || confess "no height?"; |
163 |
|
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my $header = |
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"\xFF\xD8". # Start of Image (SOI) marker |
166 |
#------------------------------------------------------------------ |
167 |
"\xFF\xE0". # JFIF marker |
168 |
pack("nZ5CCCnnCC", |
169 |
16, # length |
170 |
'JFIF', # identifier |
171 |
1,1, # version |
172 |
0, # units (none) |
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1,1, # X,Y density |
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0,0, # X,Y thumbnail |
175 |
). |
176 |
#------------------------------------------------------------------ |
177 |
"\xFF\xC0". # Start of frame |
178 |
pack("ncnncc9", |
179 |
17, # len |
180 |
8, # sample precision in bits |
181 |
$h,$w, # X,Y size |
182 |
3, # number of components |
183 |
1,0x21,0, # Component ID, H+V sampling factors, Quantization table number |
184 |
2,0x11,1, |
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3,0x11,1, |
186 |
). |
187 |
#------------------------------------------------------------------ |
188 |
"\xFF\xDB". # Define Quantization table marker |
189 |
"\x00\x84". # len |
190 |
"\x00". # 8 bit values, (byte) table 0 |
191 |
"\x10\x0B\x0C\x0E\x0C". |
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"\x0A\x10\x0E\x0D\x0E". |
193 |
"\x12\x11\x10\x13\x18". |
194 |
"\x28\x1A\x18\x16\x16". |
195 |
"\x18\x31\x23\x25\x1D". |
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"\x28\x3A\x33\x3D\x3C". |
197 |
"\x39\x33\x38\x37\x40". |
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"\x48\x5C\x4E\x40\x44". |
199 |
"\x57\x45\x37\x38\x50". |
200 |
"\x6D\x51\x57\x5F\x62". |
201 |
"\x67\x68\x67\x3E\x4D". |
202 |
"\x71\x79\x70\x64\x78". |
203 |
"\x5C\x65\x67\x63". |
204 |
"\x01". # 8 bit values, (byte) table 1 |
205 |
"\x11\x12\x12\x18\x15". |
206 |
"\x18\x2F\x1A\x1A\x2F". |
207 |
"\x63\x42\x38\x42\x63". |
208 |
"\x63\x63\x63\x63\x63". |
209 |
"\x63\x63\x63\x63\x63". |
210 |
"\x63\x63\x63\x63\x63". |
211 |
"\x63\x63\x63\x63\x63". |
212 |
"\x63\x63\x63\x63\x63". |
213 |
"\x63\x63\x63\x63\x63". |
214 |
"\x63\x63\x63\x63\x63". |
215 |
"\x63\x63\x63\x63\x63". |
216 |
"\x63\x63\x63\x63\x63". |
217 |
"\x63\x63\x63\x63". |
218 |
#------------------------------------------------------------------ |
219 |
# huffman("\x00"). # 0 DC |
220 |
# huffman("\x01"). # 1 DC |
221 |
# huffman("\x10"). # 0 AC |
222 |
# huffman("\x11"). # 1 AC |
223 |
#------------------------------------------------------------------ |
224 |
# Define huffman table (section B.2.4.1) |
225 |
"\xFF\xC4". # Marker |
226 |
"\x00\x1F". # Length (31 bytes) |
227 |
"\x00". # DC, (byte) table 0 |
228 |
"\x00\x01\x05\x01\x01". |
229 |
"\x01\x01\x01\x01\x00". |
230 |
"\x00\x00\x00\x00\x00". |
231 |
"\x00\x00\x01\x02\x03". |
232 |
"\x04\x05\x06\x07\x08". |
233 |
"\x09\x0A\x0B". |
234 |
# Define huffman table (section B.2.4.1) |
235 |
"\xFF\xC4". # Marker |
236 |
"\x00\xB5". # Length (181 bytes) |
237 |
"\x10". # AC, (byte) table 0 |
238 |
"\x00\x02\x01\x03\x03". |
239 |
"\x02\x04\x03\x05\x05". |
240 |
"\x04\x04\x00\x00\x01". |
241 |
"\x7D\x01\x02\x03\x00". |
242 |
"\x04\x11\x05\x12\x21". |
243 |
"\x31\x41\x06\x13\x51". |
244 |
"\x61\x07\x22\x71\x14". |
245 |
"\x32\x81\x91\xA1\x08". |
246 |
"\x23\x42\xB1\xC1\x15". |
247 |
"\x52\xD1\xF0\x24\x33". |
248 |
"\x62\x72\x82\x09\x0A". |
249 |
"\x16\x17\x18\x19\x1A". |
250 |
"\x25\x26\x27\x28\x29". |
251 |
"\x2A\x34\x35\x36\x37". |
252 |
"\x38\x39\x3A\x43\x44". |
253 |
"\x45\x46\x47\x48\x49". |
254 |
"\x4A\x53\x54\x55\x56". |
255 |
"\x57\x58\x59\x5A\x63". |
256 |
"\x64\x65\x66\x67\x68". |
257 |
"\x69\x6A\x73\x74\x75". |
258 |
"\x76\x77\x78\x79\x7A". |
259 |
"\x83\x84\x85\x86\x87". |
260 |
"\x88\x89\x8A\x92\x93". |
261 |
"\x94\x95\x96\x97\x98". |
262 |
"\x99\x9A\xA2\xA3\xA4". |
263 |
"\xA5\xA6\xA7\xA8\xA9". |
264 |
"\xAA\xB2\xB3\xB4\xB5". |
265 |
"\xB6\xB7\xB8\xB9\xBA". |
266 |
"\xC2\xC3\xC4\xC5\xC6". |
267 |
"\xC7\xC8\xC9\xCA\xD2". |
268 |
"\xD3\xD4\xD5\xD6\xD7". |
269 |
"\xD8\xD9\xDA\xE1\xE2". |
270 |
"\xE3\xE4\xE5\xE6\xE7". |
271 |
"\xE8\xE9\xEA\xF1\xF2". |
272 |
"\xF3\xF4\xF5\xF6\xF7". |
273 |
"\xF8\xF9\xFA". |
274 |
# Define huffman table (section B.2.4.1) |
275 |
"\xFF\xC4". # Marker |
276 |
"\x00\x1F". # Length (31 bytes) |
277 |
"\x01". # DC, (byte) table 1 |
278 |
"\x00\x03\x01\x01\x01". |
279 |
"\x01\x01\x01\x01\x01". |
280 |
"\x01\x00\x00\x00\x00". |
281 |
"\x00\x00\x01\x02\x03". |
282 |
"\x04\x05\x06\x07\x08". |
283 |
"\x09\x0A\x0B". |
284 |
# Define huffman table (section B.2.4.1) |
285 |
"\xFF\xC4". # Marker |
286 |
"\x00\xB5". # Length (181 bytes) |
287 |
"\x11". # AC, (byte) table 1 |
288 |
"\x00\x02\x01\x02\x04". |
289 |
"\x04\x03\x04\x07\x05". |
290 |
"\x04\x04\x00\x01\x02". |
291 |
"\x77\x00\x01\x02\x03". |
292 |
"\x11\x04\x05\x21\x31". |
293 |
"\x06\x12\x41\x51\x07". |
294 |
"\x61\x71\x13\x22\x32". |
295 |
"\x81\x08\x14\x42\x91". |
296 |
"\xA1\xB1\xC1\x09\x23". |
297 |
"\x33\x52\xF0\x15\x62". |
298 |
"\x72\xD1\x0A\x16\x24". |
299 |
"\x34\xE1\x25\xF1\x17". |
300 |
"\x18\x19\x1A\x26\x27". |
301 |
"\x28\x29\x2A\x35\x36". |
302 |
"\x37\x38\x39\x3A\x43". |
303 |
"\x44\x45\x46\x47\x48". |
304 |
"\x49\x4A\x53\x54\x55". |
305 |
"\x56\x57\x58\x59\x5A". |
306 |
"\x63\x64\x65\x66\x67". |
307 |
"\x68\x69\x6A\x73\x74". |
308 |
"\x75\x76\x77\x78\x79". |
309 |
"\x7A\x82\x83\x84\x85". |
310 |
"\x86\x87\x88\x89\x8A". |
311 |
"\x92\x93\x94\x95\x96". |
312 |
"\x97\x98\x99\x9A\xA2". |
313 |
"\xA3\xA4\xA5\xA6\xA7". |
314 |
"\xA8\xA9\xAA\xB2\xB3". |
315 |
"\xB4\xB5\xB6\xB7\xB8". |
316 |
"\xB9\xBA\xC2\xC3\xC4". |
317 |
"\xC5\xC6\xC7\xC8\xC9". |
318 |
"\xCA\xD2\xD3\xD4\xD5". |
319 |
"\xD6\xD7\xD8\xD9\xDA". |
320 |
"\xE2\xE3\xE4\xE5\xE6". |
321 |
"\xE7\xE8\xE9\xEA\xF2". |
322 |
"\xF3\xF4\xF5\xF6\xF7". |
323 |
"\xF8\xF9\xFA". |
324 |
#------------------------------------------------------------------ |
325 |
"\xFF\xDA". # Start of Scan marker |
326 |
pack("nC11", |
327 |
12, # length |
328 |
3, # number of components |
329 |
1,0x00, # Scan 1: use DC/AC huff tables 0/0 |
330 |
2,0x11, # Scan 2: use DC/AC huff tables 1/1 |
331 |
3,0x11, # Scan 3: use DC/AC huff tables 1/1 |
332 |
0,0x3f, # Ss, Se |
333 |
0, # Ah, Ai (not used) |
334 |
); |
335 |
#------------------------------------------------------------------ |
336 |
|
337 |
$header = |
338 |
# SOI |
339 |
"\xFF\xD8". |
340 |
# JFIF |
341 |
"\xFF\xE0". |
342 |
"\x00\x0e\x41\x56\x49\x31\x00\x00\x00\x00\x00\x00\x00\x00". |
343 |
"\xff\xDD\x00\x04\x00\x00". |
344 |
# quantization table |
345 |
"\xFF\xDB". |
346 |
"\x00\x43\x00\x21\x16\x18". |
347 |
"\x1D\x18\x14\x21\x1D\x1B\x1D\x25". |
348 |
"\x23\x21\x27\x31\x53\x36\x31\x2D". |
349 |
"\x2D\x31\x65\x48\x4c\x3c\x53\x78". |
350 |
"\x6a\x7e\x7c\x76\x6a\x74\x72\x85". |
351 |
"\x95\xbf\xa2\x85\x8d\xb4\x8f\x72". |
352 |
"\x74\xa6\xe2\xa8\xb4\xc5\xcb\xd6". |
353 |
"\xd8\xd6\x80\xa0\xeb\xfb\xe8\xd0". |
354 |
"\xf9\xbf\xd2\xd6\xcd". |
355 |
# quantization table |
356 |
"\xff\xdb". |
357 |
"\x00\x43\x01\x23\x25\x25\x31\x2b\x31". |
358 |
"\x61\x36\x36\x61\xcd\x89\x74\x89". |
359 |
"\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd". |
360 |
"\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd". |
361 |
"\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd". |
362 |
"\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd". |
363 |
"\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd". |
364 |
"\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd". |
365 |
"\xcd\xcd". |
366 |
# Define huffman table (section B.2.4.1) |
367 |
"\xFF\xC4". # Marker |
368 |
"\x00\x1F". # Length (31 bytes) |
369 |
"\x00". # DC luminance, table 0 |
370 |
"\x00\x01\x05\x01\x01\x01\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00". |
371 |
"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B". |
372 |
# Define huffman table (section B.2.4.1) |
373 |
"\xFF\xC4". # Marker |
374 |
"\x00\x1F". # Length (31 bytes) |
375 |
"\x01". # DC chrominance, table 1 |
376 |
"\x00\x03\x01\x01\x01\x01\x01\x01\x01\x01\x01\x00". |
377 |
"\x00\x00\x00\x00". |
378 |
"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B". |
379 |
# Define huffman table (section B.2.4.1) |
380 |
"\xFF\xC4". # Marker |
381 |
"\x00\xB5". # Length (181 bytes) |
382 |
"\x10". # AC luminance, table 0 |
383 |
"\x00\x02\x01\x03\x03\x02\x04\x03\x05\x05\x04\x04\x00\x00\x01\x7D". |
384 |
"\x01\x02\x03\x00\x04\x11\x05\x12". |
385 |
"\x21\x31\x41\x06\x13\x51\x61\x07\x22\x71\x14\x32". |
386 |
"\x81\x91\xA1\x08\x23\x42\xB1\xC1\x15\x52\xD1\xF0". |
387 |
"\x24\x33\x62\x72\x82\x09\x0A\x16\x17\x18\x19\x1A". |
388 |
"\x25\x26\x27\x28\x29\x2A\x34\x35\x36\x37\x38\x39". |
389 |
"\x3A\x43\x44\x45\x46\x47\x48\x49\x4A\x53\x54\x55". |
390 |
"\x56\x57\x58\x59\x5A\x63\x64\x65\x66\x67\x68\x69". |
391 |
"\x6A\x73\x74\x75\x76\x77\x78\x79\x7A\x83\x84\x85". |
392 |
"\x86\x87\x88\x89\x8A\x92\x93\x94\x95\x96\x97\x98". |
393 |
"\x99\x9A\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9\xAA\xB2". |
394 |
"\xB3\xB4\xB5\xB6\xB7\xB8\xB9\xBA\xC2\xC3\xC4\xC5". |
395 |
"\xC6\xC7\xC8\xC9\xCA\xD2\xD3\xD4\xD5\xD6\xD7\xD8". |
396 |
"\xD9\xDA\xE1\xE2\xE3\xE4\xE5\xE6\xE7\xE8\xE9\xEA". |
397 |
"\xF1\xF2\xF3\xF4\xF5\xF6\xF7\xF8\xF9\xFA". |
398 |
#/* Define huffman table (section B.2.4.1) */ |
399 |
"\xFF\xC4". # Marker |
400 |
"\x00\xB5". # Length (181 bytes) |
401 |
"\x11". # AC chrominance, table 1 |
402 |
"\x00\x02\x01\x02\x04\x04\x03\x04\x07\x05\x04\x04". |
403 |
"\x00\x01\x02\x77". |
404 |
"\x00\x01\x02\x03\x11\x04\x05\x21". |
405 |
"\x31\x06\x12\x41\x51\x07\x61\x71\x13\x22\x32\x81". |
406 |
"\x08\x14\x42\x91\xA1\xB1\xC1\x09\x23\x33\x52\xF0". |
407 |
"\x15\x62\x72\xD1\x0A\x16\x24\x34\xE1\x25\xF1\x17". |
408 |
"\x18\x19\x1A\x26\x27\x28\x29\x2A\x35\x36\x37\x38". |
409 |
"\x39\x3A\x43\x44\x45\x46\x47\x48\x49\x4A\x53\x54". |
410 |
"\x55\x56\x57\x58\x59\x5A\x63\x64\x65\x66\x67\x68". |
411 |
"\x69\x6A\x73\x74\x75\x76\x77\x78\x79\x7A\x82\x83". |
412 |
"\x84\x85\x86\x87\x88\x89\x8A\x92\x93\x94\x95\x96". |
413 |
"\x97\x98\x99\x9A\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9". |
414 |
"\xAA\xB2\xB3\xB4\xB5\xB6\xB7\xB8\xB9\xBA\xC2\xC3". |
415 |
"\xC4\xC5\xC6\xC7\xC8\xC9\xCA\xD2\xD3\xD4\xD5\xD6". |
416 |
"\xD7\xD8\xD9\xDA\xE2\xE3\xE4\xE5\xE6\xE7\xE8\xE9". |
417 |
"\xEA\xF2\xF3\xF4\xF5\xF6\xF7\xF8\xF9\xFA". |
418 |
# start of frame |
419 |
"\xff\xc0". |
420 |
"\x00\x11\x08". |
421 |
pack("nn", $h, $w). |
422 |
"\x03\x01\x21\x00\x02\x11\x01\x03\x11\x01". |
423 |
# |
424 |
"\xff\xda". |
425 |
"\x00\x0c\x03\x01\x00\x02\x11\x03\x11". |
426 |
"\x00\x3f\x00"; |
427 |
|
428 |
if ( $dump ) { |
429 |
warn "## created JPEG header...\n"; |
430 |
hex_dump( $header, 0 ); |
431 |
} |
432 |
|
433 |
print $fh $header || die "can't write header into $path: $!"; |
434 |
print $fh $data || die "can't write frame into $path: $!"; |
435 |
close $fh || die "can't close $path: $!"; |
436 |
print ">> created $path ", -s $path, " bytes\n"; |
437 |
} |
438 |
|
439 |
my ( $riff, $amv ) = x(12, 'Z4x4Z4'); |
440 |
die "$path not RIFF but $riff" if $riff ne 'RIFF'; |
441 |
die "$path not AMV but $amv" if $amv ne 'AMV '; |
442 |
|
443 |
while ( ! defined($d->{eof}) ) { |
444 |
my ( $list, $name ) = x(12,'A4x4A4'); |
445 |
die "not LIST but $list" if $list ne 'LIST'; |
446 |
print "< $list * $name\n"; |
447 |
|
448 |
if ( $name eq 'hdrl' ) { |
449 |
|
450 |
my $len = next_part( 'amvh', hex(38) ); |
451 |
|
452 |
my @names = ( qw/ms_per_frame width height fps ss mm hh/ ); |
453 |
my $h; |
454 |
map { |
455 |
my $v = $_; |
456 |
my $n = shift @names || die "no more names?"; |
457 |
$h->{$n} = $v; |
458 |
} x($len, 'Vx28VVVx8CCv'); |
459 |
|
460 |
printf "## %s %d*%d %s fps (%d ms/frame) %02d:%02d:%02d\n", |
461 |
$path, |
462 |
$h->{width}, $h->{height}, $h->{fps}, $h->{ms_per_frame}, |
463 |
$h->{hh}, $h->{mm}, $h->{ss}; |
464 |
|
465 |
$d->{amvh} = $h; |
466 |
|
467 |
} elsif ( $name eq 'strl' ) { |
468 |
|
469 |
next_part( 'strh', 0, 1 ); |
470 |
next_part( 'strf', 0, 1 ); |
471 |
|
472 |
} elsif ( $name eq 'movi' ) { |
473 |
|
474 |
while (1) { |
475 |
my $frame = $d->{movi}++; |
476 |
|
477 |
my $len = next_part( '00dc' ); |
478 |
last unless $len; |
479 |
printf "<< %s 00dc - frame %d jpeg %d 0x%x bytes\n", $name, $frame, $len, $len; |
480 |
mkjpg( sprintf("$dump_dir/%03d.jpg", $frame ), x($len) ); |
481 |
|
482 |
$len = next_part( '01wb', 0, 1 ); |
483 |
printf "<< %s 01wb - frame %d audio %d 0x%x bytes\n", $name, $frame, $len, $len; |
484 |
}; |
485 |
|
486 |
} else { |
487 |
die "unknown $list $name"; |
488 |
} |
489 |
} |