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dpavlin |
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#!/usr/bin/perl -w |
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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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dpavlin |
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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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dpavlin |
8 |
# 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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dpavlin |
3 |
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use strict; |
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use Data::Dump qw/dump/; |
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use Carp qw/confess/; |
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dpavlin |
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use File::Path; |
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dpavlin |
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dpavlin |
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my $dump = 0; |
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my $debug = 0; |
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dpavlin |
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my $path = shift @ARGV || die "usage: $0 movie.amv\n"; |
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dpavlin |
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my $dump_dir = '/tmp/dump/'; |
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dpavlin |
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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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dpavlin |
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dpavlin |
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open(my $fh, '<', $path) || die "can't open $path: $!"; |
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dpavlin |
4 |
# offset in file |
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my $o = 0; |
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# shared data hash |
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my $d; |
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dpavlin |
3 |
sub hex_dump { |
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dpavlin |
8 |
return unless $dump; |
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dpavlin |
3 |
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dpavlin |
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my ( $bytes, $offset ) = @_; |
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return unless $bytes; |
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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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dpavlin |
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my $ascii = $bytes; |
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$ascii =~ s/\W/./gs; |
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dpavlin |
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my $hex = uc( unpack('h*', $bytes) ); |
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dpavlin |
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$hex =~ s/(..)/$1 /g; |
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# calculate number of characters for offset |
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dpavlin |
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#my $d = length( sprintf("%x",length($bytes)) ); |
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my $d = 4; |
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dpavlin |
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my $prefix = '#.'; |
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dpavlin |
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while ( $hex =~ s/^((?:\w\w\s){1,16})// ) { |
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dpavlin |
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printf "$prefix %0${d}x | %-48s| %s\n", $o, $1, substr( $ascii, 0, 16 ); |
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$prefix = '##'; |
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dpavlin |
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if ( length($ascii) >= 16 ) { |
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$ascii = substr( $ascii, 16 ); |
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dpavlin |
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$o += 16; |
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dpavlin |
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} else { |
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dpavlin |
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$o += length($ascii); |
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dpavlin |
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last; |
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} |
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} |
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dpavlin |
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$o = $old_o if $old_o; |
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dpavlin |
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} |
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sub x { |
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my ($len,$format) = @_; |
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my $bytes; |
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read($fh, $bytes, $len); |
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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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hex_dump( $bytes ); |
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dpavlin |
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if ( $bytes eq 'AMV_END_' ) { |
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dpavlin |
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warn "> end of file marker AMV_END_\n"; |
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dpavlin |
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$d->{eof}++; |
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return; |
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} |
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dpavlin |
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if ( $format ) { |
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my @data = unpack($format, $bytes); |
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dpavlin |
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warn "## unpacked = ",dump(@data),"\n" if $debug; |
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dpavlin |
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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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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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dpavlin |
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return unless $len; |
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dpavlin |
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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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dpavlin |
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printf "<< %s - %d 0x%x bytes\n", $part, $len, $len; |
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dpavlin |
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x($len) if $skip; |
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return $len; |
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} |
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dpavlin |
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sub huffman { |
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dpavlin |
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dpavlin |
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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" . |
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"\x99\x9A\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9\xAA\xB2\xB3\xB4\xB5" . |
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"\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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sub mkjpg { |
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my ($path,$data) = @_; |
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open(my $fh, '>', $path) || die "can't create $path: $!"; |
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confess "no SOI marker in data" if substr($data,0,2) ne "\xFF\xD8"; |
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$data = substr($data,2); |
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my $header = |
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"\xFF\xD8". # Start of Image (SOI) marker |
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#------------------------------------------------------------------ |
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"\xFF\xE0". # JFIF marker |
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pack("nZ5CCCnnCC", |
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16, # length |
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'JFIF', # identifier |
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1,1, # version |
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0, # units (none) |
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1,1, # X,Y density |
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0,0, # X,Y thumbnail |
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). |
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#------------------------------------------------------------------ |
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dpavlin |
11 |
"\xFF\xC0". # Start of frame |
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dpavlin |
8 |
pack("ncnncc9", |
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17, # len |
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8, # sample precision in bits |
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120,160, # X,Y size |
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3, # number of components |
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dpavlin |
11 |
1,0x21,0, # Component ID, H+V sampling factors, Quantization table number |
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2,0x11,1, |
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3,0x11,1, |
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dpavlin |
8 |
). |
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#------------------------------------------------------------------ |
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dpavlin |
11 |
"\xFF\xDB". # Define Quantization table marker |
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"\x00\x84". # len |
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"\x00". # 8 bit values, (byte) table 0 |
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"\x10\x0B\x0C\x0E\x0C". |
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"\x0A\x10\x0E\x0D\x0E". |
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"\x12\x11\x10\x13\x18". |
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"\x28\x1A\x18\x16\x16". |
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"\x18\x31\x23\x25\x1D". |
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"\x28\x3A\x33\x3D\x3C". |
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"\x39\x33\x38\x37\x40". |
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"\x48\x5C\x4E\x40\x44". |
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"\x57\x45\x37\x38\x50". |
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"\x6D\x51\x57\x5F\x62". |
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"\x67\x68\x67\x3E\x4D". |
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"\x71\x79\x70\x64\x78". |
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"\x5C\x65\x67\x63". |
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"\x01". # 8 bit values, (byte) table 1 |
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"\x11\x12\x12\x18\x15". |
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"\x18\x2F\x1A\x1A\x2F". |
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"\x63\x42\x38\x42\x63". |
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"\x63\x63\x63\x63\x63". |
| 198 |
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"\x63\x63\x63\x63\x63". |
| 199 |
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"\x63\x63\x63\x63\x63". |
| 200 |
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"\x63\x63\x63\x63\x63". |
| 201 |
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"\x63\x63\x63\x63\x63". |
| 202 |
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"\x63\x63\x63\x63\x63". |
| 203 |
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"\x63\x63\x63\x63\x63". |
| 204 |
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"\x63\x63\x63\x63\x63". |
| 205 |
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"\x63\x63\x63\x63\x63". |
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"\x63\x63\x63\x63". |
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#------------------------------------------------------------------ |
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dpavlin |
8 |
# huffman("\x00"). # 0 DC |
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dpavlin |
11 |
# huffman("\x01"). # 1 DC |
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dpavlin |
8 |
# huffman("\x10"). # 0 AC |
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# huffman("\x11"). # 1 AC |
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#------------------------------------------------------------------ |
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dpavlin |
11 |
# Define huffman table (section B.2.4.1) |
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"\xFF\xC4". # Marker |
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"\x00\x1F". # Length (31 bytes) |
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"\x00". # DC, (byte) table 0 |
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"\x00\x01\x05\x01\x01". |
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"\x01\x01\x01\x01\x00". |
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"\x00\x00\x00\x00\x00". |
| 220 |
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"\x00\x00\x01\x02\x03". |
| 221 |
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"\x04\x05\x06\x07\x08". |
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"\x09\x0A\x0B". |
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# Define huffman table (section B.2.4.1) |
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"\xFF\xC4". # Marker |
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"\x00\xB5". # Length (181 bytes) |
| 226 |
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"\x10". # AC, (byte) table 0 |
| 227 |
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"\x00\x02\x01\x03\x03". |
| 228 |
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"\x02\x04\x03\x05\x05". |
| 229 |
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"\x04\x04\x00\x00\x01". |
| 230 |
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"\x7D\x01\x02\x03\x00". |
| 231 |
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"\x04\x11\x05\x12\x21". |
| 232 |
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"\x31\x41\x06\x13\x51". |
| 233 |
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"\x61\x07\x22\x71\x14". |
| 234 |
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"\x32\x81\x91\xA1\x08". |
| 235 |
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"\x23\x42\xB1\xC1\x15". |
| 236 |
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"\x52\xD1\xF0\x24\x33". |
| 237 |
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"\x62\x72\x82\x09\x0A". |
| 238 |
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"\x16\x17\x18\x19\x1A". |
| 239 |
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"\x25\x26\x27\x28\x29". |
| 240 |
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"\x2A\x34\x35\x36\x37". |
| 241 |
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"\x38\x39\x3A\x43\x44". |
| 242 |
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"\x45\x46\x47\x48\x49". |
| 243 |
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"\x4A\x53\x54\x55\x56". |
| 244 |
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"\x57\x58\x59\x5A\x63". |
| 245 |
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"\x64\x65\x66\x67\x68". |
| 246 |
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"\x69\x6A\x73\x74\x75". |
| 247 |
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"\x76\x77\x78\x79\x7A". |
| 248 |
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"\x83\x84\x85\x86\x87". |
| 249 |
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"\x88\x89\x8A\x92\x93". |
| 250 |
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"\x94\x95\x96\x97\x98". |
| 251 |
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"\x99\x9A\xA2\xA3\xA4". |
| 252 |
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"\xA5\xA6\xA7\xA8\xA9". |
| 253 |
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"\xAA\xB2\xB3\xB4\xB5". |
| 254 |
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"\xB6\xB7\xB8\xB9\xBA". |
| 255 |
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"\xC2\xC3\xC4\xC5\xC6". |
| 256 |
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"\xC7\xC8\xC9\xCA\xD2". |
| 257 |
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"\xD3\xD4\xD5\xD6\xD7". |
| 258 |
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"\xD8\xD9\xDA\xE1\xE2". |
| 259 |
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"\xE3\xE4\xE5\xE6\xE7". |
| 260 |
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"\xE8\xE9\xEA\xF1\xF2". |
| 261 |
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"\xF3\xF4\xF5\xF6\xF7". |
| 262 |
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"\xF8\xF9\xFA". |
| 263 |
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# Define huffman table (section B.2.4.1) |
| 264 |
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"\xFF\xC4". # Marker |
| 265 |
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"\x00\x1F". # Length (31 bytes) |
| 266 |
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"\x01". # DC, (byte) table 1 |
| 267 |
|
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"\x00\x03\x01\x01\x01". |
| 268 |
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"\x01\x01\x01\x01\x01". |
| 269 |
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"\x01\x00\x00\x00\x00". |
| 270 |
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"\x00\x00\x01\x02\x03". |
| 271 |
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"\x04\x05\x06\x07\x08". |
| 272 |
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"\x09\x0A\x0B". |
| 273 |
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# Define huffman table (section B.2.4.1) |
| 274 |
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"\xFF\xC4". # Marker |
| 275 |
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"\x00\xB5". # Length (181 bytes) |
| 276 |
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"\x11". # AC, (byte) table 1 |
| 277 |
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"\x00\x02\x01\x02\x04". |
| 278 |
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"\x04\x03\x04\x07\x05". |
| 279 |
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"\x04\x04\x00\x01\x02". |
| 280 |
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"\x77\x00\x01\x02\x03". |
| 281 |
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"\x11\x04\x05\x21\x31". |
| 282 |
|
|
"\x06\x12\x41\x51\x07". |
| 283 |
|
|
"\x61\x71\x13\x22\x32". |
| 284 |
|
|
"\x81\x08\x14\x42\x91". |
| 285 |
|
|
"\xA1\xB1\xC1\x09\x23". |
| 286 |
|
|
"\x33\x52\xF0\x15\x62". |
| 287 |
|
|
"\x72\xD1\x0A\x16\x24". |
| 288 |
|
|
"\x34\xE1\x25\xF1\x17". |
| 289 |
|
|
"\x18\x19\x1A\x26\x27". |
| 290 |
|
|
"\x28\x29\x2A\x35\x36". |
| 291 |
|
|
"\x37\x38\x39\x3A\x43". |
| 292 |
|
|
"\x44\x45\x46\x47\x48". |
| 293 |
|
|
"\x49\x4A\x53\x54\x55". |
| 294 |
|
|
"\x56\x57\x58\x59\x5A". |
| 295 |
|
|
"\x63\x64\x65\x66\x67". |
| 296 |
|
|
"\x68\x69\x6A\x73\x74". |
| 297 |
|
|
"\x75\x76\x77\x78\x79". |
| 298 |
|
|
"\x7A\x82\x83\x84\x85". |
| 299 |
|
|
"\x86\x87\x88\x89\x8A". |
| 300 |
|
|
"\x92\x93\x94\x95\x96". |
| 301 |
|
|
"\x97\x98\x99\x9A\xA2". |
| 302 |
|
|
"\xA3\xA4\xA5\xA6\xA7". |
| 303 |
|
|
"\xA8\xA9\xAA\xB2\xB3". |
| 304 |
|
|
"\xB4\xB5\xB6\xB7\xB8". |
| 305 |
|
|
"\xB9\xBA\xC2\xC3\xC4". |
| 306 |
|
|
"\xC5\xC6\xC7\xC8\xC9". |
| 307 |
|
|
"\xCA\xD2\xD3\xD4\xD5". |
| 308 |
|
|
"\xD6\xD7\xD8\xD9\xDA". |
| 309 |
|
|
"\xE2\xE3\xE4\xE5\xE6". |
| 310 |
|
|
"\xE7\xE8\xE9\xEA\xF2". |
| 311 |
|
|
"\xF3\xF4\xF5\xF6\xF7". |
| 312 |
|
|
"\xF8\xF9\xFA". |
| 313 |
|
|
#------------------------------------------------------------------ |
| 314 |
dpavlin |
8 |
"\xFF\xDA". # Start of Scan marker |
| 315 |
|
|
pack("nC11", |
| 316 |
|
|
12, # length |
| 317 |
|
|
3, # number of components |
| 318 |
dpavlin |
11 |
1,0x00, # Scan 1: use DC/AC huff tables 0/0 |
| 319 |
|
|
2,0x11, # Scan 2: use DC/AC huff tables 1/1 |
| 320 |
|
|
3,0x11, # Scan 3: use DC/AC huff tables 1/1 |
| 321 |
|
|
0,0x3f, # Ss, Se |
| 322 |
|
|
0, # Ah, Ai (not used) |
| 323 |
dpavlin |
8 |
); |
| 324 |
|
|
#------------------------------------------------------------------ |
| 325 |
|
|
|
| 326 |
|
|
|
| 327 |
dpavlin |
11 |
if ( $dump ) { |
| 328 |
|
|
warn "## created JPEG header...\n"; |
| 329 |
|
|
hex_dump( $header, 0 ); |
| 330 |
|
|
} |
| 331 |
dpavlin |
8 |
|
| 332 |
dpavlin |
11 |
print $fh $header || die "can't write header into $path: $!"; |
| 333 |
|
|
print $fh $data || die "can't write frame into $path: $!"; |
| 334 |
dpavlin |
8 |
close $fh || die "can't close $path: $!"; |
| 335 |
|
|
print ">> created $path ", -s $path, " bytes\n"; |
| 336 |
|
|
} |
| 337 |
|
|
|
| 338 |
|
|
my ( $riff, $amv ) = x(12, 'Z4x4Z4'); |
| 339 |
|
|
die "$path not RIFF but $riff" if $riff ne 'RIFF'; |
| 340 |
|
|
die "$path not AMV but $amv" if $amv ne 'AMV '; |
| 341 |
|
|
|
| 342 |
dpavlin |
4 |
while ( ! defined($d->{eof}) ) { |
| 343 |
dpavlin |
3 |
my ( $list, $name ) = x(12,'A4x4A4'); |
| 344 |
|
|
die "not LIST but $list" if $list ne 'LIST'; |
| 345 |
dpavlin |
8 |
print "< $list * $name\n"; |
| 346 |
dpavlin |
3 |
|
| 347 |
|
|
if ( $name eq 'hdrl' ) { |
| 348 |
|
|
|
| 349 |
|
|
my $len = next_part( 'amvh', hex(38) ); |
| 350 |
|
|
|
| 351 |
|
|
my @names = ( qw/ms_per_frame width height fps ss mm hh/ ); |
| 352 |
|
|
my $h; |
| 353 |
|
|
map { |
| 354 |
|
|
my $v = $_; |
| 355 |
|
|
my $n = shift @names || die "no more names?"; |
| 356 |
|
|
$h->{$n} = $v; |
| 357 |
|
|
} x($len, 'Vx28VVVx8CCv'); |
| 358 |
|
|
|
| 359 |
|
|
printf "## %s %d*%d %s fps (%d ms/frame) %02d:%02d:%02d\n", |
| 360 |
dpavlin |
8 |
$path, |
| 361 |
dpavlin |
3 |
$h->{width}, $h->{height}, $h->{fps}, $h->{ms_per_frame}, |
| 362 |
|
|
$h->{hh}, $h->{mm}, $h->{ss}; |
| 363 |
|
|
|
| 364 |
|
|
$d->{amvh} = $h; |
| 365 |
|
|
|
| 366 |
|
|
} elsif ( $name eq 'strl' ) { |
| 367 |
|
|
|
| 368 |
|
|
next_part( 'strh', 0, 1 ); |
| 369 |
|
|
next_part( 'strf', 0, 1 ); |
| 370 |
|
|
|
| 371 |
dpavlin |
4 |
} elsif ( $name eq 'movi' ) { |
| 372 |
|
|
|
| 373 |
|
|
while (1) { |
| 374 |
|
|
my $frame = $d->{movi}++; |
| 375 |
|
|
|
| 376 |
dpavlin |
8 |
my $len = next_part( '00dc' ); |
| 377 |
dpavlin |
4 |
last unless $len; |
| 378 |
dpavlin |
8 |
printf "<< %s 00dc - frame %d jpeg %d 0x%x bytes\n", $name, $frame, $len, $len; |
| 379 |
|
|
mkjpg( sprintf("$dump_dir/%03d.jpg", $frame ), x($len) ); |
| 380 |
dpavlin |
4 |
|
| 381 |
dpavlin |
8 |
$len = next_part( '01wb', 0, 1 ); |
| 382 |
|
|
printf "<< %s 01wb - frame %d audio %d 0x%x bytes\n", $name, $frame, $len, $len; |
| 383 |
dpavlin |
4 |
}; |
| 384 |
|
|
|
| 385 |
dpavlin |
3 |
} else { |
| 386 |
|
|
die "unknown $list $name"; |
| 387 |
|
|
} |
| 388 |
|
|
} |
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