| 1 |
#!/usr/bin/perl -w |
| 2 |
|
| 3 |
# amv.pl |
| 4 |
# |
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# 07/19/07 19:21:39 CEST Dobrica Pavlinusic <dpavlin@rot13.org> |
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# |
| 7 |
# Various useful links used to produce this: |
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# http://www.moviecodec.com/topics/15431p1.html |
| 9 |
# http://en.wikipedia.org/wiki/RIFF_(File_format) |
| 10 |
# 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; |
| 14 |
|
| 15 |
use Data::Dump qw/dump/; |
| 16 |
use Carp qw/confess/; |
| 17 |
use File::Path; |
| 18 |
use Getopt::Long; |
| 19 |
|
| 20 |
my $dump = 0; |
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my $debug = 0; |
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my $dump_dir = '/tmp/dump/'; |
| 23 |
my $dump_avi = "dump.avi"; |
| 24 |
my $no_jpeg_header = 0; |
| 25 |
my $jpeg_q = 100; |
| 26 |
my $jpegtran = '-flip vertical'; |
| 27 |
|
| 28 |
GetOptions( |
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"dump!" => \$dump, |
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"debug!" => \$debug, |
| 31 |
"dump-dir=s" => \$dump_dir, |
| 32 |
"no-jpeg-headers!" => \$no_jpeg_header, |
| 33 |
"jpegtran=s" => \$jpegtran |
| 34 |
); |
| 35 |
|
| 36 |
my $path = shift @ARGV || die "usage: $0 movie.amv\n"; |
| 37 |
|
| 38 |
|
| 39 |
rmtree $dump_dir if -e $dump_dir; |
| 40 |
mkpath $dump_dir || die "can't create $dump_dir: $!"; |
| 41 |
|
| 42 |
open(my $fh, '<', $path) || die "can't open $path: $!"; |
| 43 |
|
| 44 |
# offset in file |
| 45 |
my $o = 0; |
| 46 |
|
| 47 |
# shared data hash |
| 48 |
my $d; |
| 49 |
|
| 50 |
sub hex_dump { |
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return unless $dump; |
| 52 |
|
| 53 |
my ( $bytes, $offset ) = @_; |
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return unless $bytes; |
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|
| 56 |
my $old_o; |
| 57 |
if (defined($offset)) { |
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$old_o = $o; |
| 59 |
$o = $offset; |
| 60 |
} |
| 61 |
|
| 62 |
my $ascii = $bytes; |
| 63 |
$ascii =~ s/\W/./gs; |
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my $hex = uc( unpack('h*', $bytes) ); |
| 65 |
$hex =~ s/(..)/$1 /g; |
| 66 |
# calculate number of characters for offset |
| 67 |
#my $d = length( sprintf("%x",length($bytes)) ); |
| 68 |
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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} |
| 81 |
|
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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; |
| 93 |
|
| 94 |
hex_dump( $bytes ); |
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|
| 96 |
if ( $bytes eq 'AMV_END_' ) { |
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print "> end of file marker AMV_END_\n" if $dump; |
| 98 |
$d->{eof}++; |
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return; |
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} |
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|
| 102 |
if ( $format ) { |
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my @data = unpack($format, $bytes); |
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print "## 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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|
| 111 |
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; |
| 115 |
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 quality { |
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my @table = @_; |
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die "quantization matrice needs to have 64 bytes!" if $#table != 63; |
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|
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my $in = join('', map { chr($_) } @table ); |
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my $out; |
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|
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foreach my $t ( @table ) { |
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$t = int( ( $t * $jpeg_q ) / 100 ); |
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$t = 255 if $t > 255; |
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$out .= chr($t); |
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} |
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|
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if ( $dump ) { |
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print "## quantization table original\n"; |
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hex_dump( $in ); |
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print "## quantization table for $jpeg_q %\n"; |
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hex_dump( $out ); |
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} |
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|
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return $out; |
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} |
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|
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my @subframes; |
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my $frame_nr = 1; |
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|
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# how many subframes to join into single frame? |
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my $join_subframes = 0; |
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|
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sub mkjpg { |
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my ($data) = @_; |
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|
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confess "no SOI marker in data" if substr($data,0,2) ne "\xFF\xD8"; |
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confess "no EOI marker in data" if substr($data,-2,2) ne "\xFF\xD9"; |
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$data = substr($data,2,-2); |
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|
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if ( $#subframes < ( $join_subframes - 1 ) ) { |
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push @subframes, $data; |
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print "## saved $frame_nr/", $#subframes + 1, " subframe of ", length($data), " bytes\n"; |
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return; |
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} |
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|
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my $w = $d->{amvh}->{width} || die "no width?"; |
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my $h = $d->{amvh}->{height} || confess "no height?"; |
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|
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my $header = |
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# Start of Image (SOI) marker |
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"\xFF\xD8". |
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# JFIF marker |
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"\xFF\xE0". |
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pack("nZ5CCCnnCC", |
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16, # length |
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'JFIF', # identifier (JFIF) |
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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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"\xFF\xFE". |
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"\x00\x3CCREATOR: amv dumper (compat. IJG JPEG v62), quality = 100\n". |
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# quantization table (quaility=100%) |
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"\xFF\xDB". |
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"\x00\x43". |
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# 8 bit values, table 1 |
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"\x00". |
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quality( |
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0x10, 0x0B, 0x0C, 0x0E, 0x0C, 0x0A, 0x10, 0x0E, |
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0x0D, 0x0E, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28, |
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0x1A, 0x18, 0x16, 0x16, 0x18, 0x31, 0x23, 0x25, |
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0x1D, 0x28, 0x3A, 0x33, 0x3D, 0x3C, 0x39, 0x33, |
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0x38, 0x37, 0x40, 0x48, 0x5C, 0x4E, 0x40, 0x44, |
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0x57, 0x45, 0x37, 0x38, 0x50, 0x6D, 0x51, 0x57, |
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0x5F, 0x62, 0x67, 0x68, 0x67, 0x3E, 0x4D, 0x71, |
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0x79, 0x70, 0x64, 0x78, 0x5C, 0x65, 0x67, 0x63, |
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). |
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"\xFF\xDB". |
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"\x00\x43". |
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# 8 bit values, table 1 |
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"\x01". |
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quality( |
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0x11, 0x12, 0x12, 0x18, 0x15, 0x18, 0x2F, 0x1A, |
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0x1A, 0x2F, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63, |
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, |
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, |
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, |
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, |
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, |
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, |
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). |
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# start of frame |
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"\xFF\xC0". |
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pack("ncnncc9", |
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17, # len |
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8, # sample precision in bits |
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$h,$w, # X,Y size |
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3, # number of components |
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1,0x22,0, # 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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). |
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# 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 luminance, table 0 |
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"\x00\x01\x05\x01\x01\x01\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00". |
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"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B". |
| 230 |
# Define huffman table (section B.2.4.1) |
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"\xFF\xC4". # Marker |
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"\x00\xB5". # Length (181 bytes) |
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"\x10". # AC luminance, table 0 |
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"\x00\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". |
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"\x21\x31\x41\x06\x13\x51\x61\x07\x22\x71\x14\x32". |
| 237 |
"\x81\x91\xA1\x08\x23\x42\xB1\xC1\x15\x52\xD1\xF0". |
| 238 |
"\x24\x33\x62\x72\x82\x09\x0A\x16\x17\x18\x19\x1A". |
| 239 |
"\x25\x26\x27\x28\x29\x2A\x34\x35\x36\x37\x38\x39". |
| 240 |
"\x3A\x43\x44\x45\x46\x47\x48\x49\x4A\x53\x54\x55". |
| 241 |
"\x56\x57\x58\x59\x5A\x63\x64\x65\x66\x67\x68\x69". |
| 242 |
"\x6A\x73\x74\x75\x76\x77\x78\x79\x7A\x83\x84\x85". |
| 243 |
"\x86\x87\x88\x89\x8A\x92\x93\x94\x95\x96\x97\x98". |
| 244 |
"\x99\x9A\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9\xAA\xB2". |
| 245 |
"\xB3\xB4\xB5\xB6\xB7\xB8\xB9\xBA\xC2\xC3\xC4\xC5". |
| 246 |
"\xC6\xC7\xC8\xC9\xCA\xD2\xD3\xD4\xD5\xD6\xD7\xD8". |
| 247 |
"\xD9\xDA\xE1\xE2\xE3\xE4\xE5\xE6\xE7\xE8\xE9\xEA". |
| 248 |
"\xF1\xF2\xF3\xF4\xF5\xF6\xF7\xF8\xF9\xFA". |
| 249 |
# Define huffman table (section B.2.4.1) |
| 250 |
"\xFF\xC4". # Marker |
| 251 |
"\x00\x1F". # Length (31 bytes) |
| 252 |
"\x01". # DC chrominance, table 1 |
| 253 |
"\x00\x03\x01\x01\x01\x01\x01\x01\x01\x01\x01\x00". |
| 254 |
"\x00\x00\x00\x00". |
| 255 |
"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B". |
| 256 |
#/* Define huffman table (section B.2.4.1) */ |
| 257 |
"\xFF\xC4". # Marker |
| 258 |
"\x00\xB5". # Length (181 bytes) |
| 259 |
"\x11". # AC chrominance, table 1 |
| 260 |
"\x00\x02\x01\x02\x04\x04\x03\x04\x07\x05\x04\x04". |
| 261 |
"\x00\x01\x02\x77". |
| 262 |
"\x00\x01\x02\x03\x11\x04\x05\x21". |
| 263 |
"\x31\x06\x12\x41\x51\x07\x61\x71\x13\x22\x32\x81". |
| 264 |
"\x08\x14\x42\x91\xA1\xB1\xC1\x09\x23\x33\x52\xF0". |
| 265 |
"\x15\x62\x72\xD1\x0A\x16\x24\x34\xE1\x25\xF1\x17". |
| 266 |
"\x18\x19\x1A\x26\x27\x28\x29\x2A\x35\x36\x37\x38". |
| 267 |
"\x39\x3A\x43\x44\x45\x46\x47\x48\x49\x4A\x53\x54". |
| 268 |
"\x55\x56\x57\x58\x59\x5A\x63\x64\x65\x66\x67\x68". |
| 269 |
"\x69\x6A\x73\x74\x75\x76\x77\x78\x79\x7A\x82\x83". |
| 270 |
"\x84\x85\x86\x87\x88\x89\x8A\x92\x93\x94\x95\x96". |
| 271 |
"\x97\x98\x99\x9A\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9". |
| 272 |
"\xAA\xB2\xB3\xB4\xB5\xB6\xB7\xB8\xB9\xBA\xC2\xC3". |
| 273 |
"\xC4\xC5\xC6\xC7\xC8\xC9\xCA\xD2\xD3\xD4\xD5\xD6". |
| 274 |
"\xD7\xD8\xD9\xDA\xE2\xE3\xE4\xE5\xE6\xE7\xE8\xE9". |
| 275 |
"\xEA\xF2\xF3\xF4\xF5\xF6\xF7\xF8\xF9\xFA". |
| 276 |
# Start of Scan marker |
| 277 |
"\xFF\xDA". |
| 278 |
pack("nC10", |
| 279 |
12, # length |
| 280 |
3, # number of components |
| 281 |
1,0x00, # Scan 1: use DC/AC huff tables 0/0 |
| 282 |
2,0x11, # Scan 2: use DC/AC huff tables 1/1 |
| 283 |
3,0x11, # Scan 3: use DC/AC huff tables 1/1 |
| 284 |
0,0x3f, # Ss, Se |
| 285 |
0, # Ah, Ai (not used) |
| 286 |
); |
| 287 |
|
| 288 |
if ( $dump ) { |
| 289 |
print "## created JPEG header...\n"; |
| 290 |
hex_dump( $header, 0 ); |
| 291 |
} |
| 292 |
|
| 293 |
my $frame = join('', @subframes ) . $data; |
| 294 |
@subframes = (); |
| 295 |
|
| 296 |
my $path = sprintf("$dump_dir/%04d.jpg", $frame_nr++ ); |
| 297 |
|
| 298 |
my $fh; |
| 299 |
if ( $jpegtran ) { |
| 300 |
open($fh, '|-', "jpegtran $jpegtran > $path") || die "can't create $path: $!"; |
| 301 |
} else { |
| 302 |
open($fh, '>', $path) || die "can't create $path: $!"; |
| 303 |
} |
| 304 |
|
| 305 |
if ( ! $no_jpeg_header ) { |
| 306 |
print $fh $header . $frame . "\xFF\xD9" || die "can't write jpeg $path: $!"; |
| 307 |
} else { |
| 308 |
print $fh $frame || die "can't write raw jpeg $path: $!"; |
| 309 |
} |
| 310 |
close $fh || die "can't close $path: $!"; |
| 311 |
print ">> created $frame_nr ", $no_jpeg_header ? 'raw' : '', " jpeg $path ", -s $path, " bytes\n"; |
| 312 |
} |
| 313 |
|
| 314 |
my ( $riff, $amv ) = x(12, 'Z4x4Z4'); |
| 315 |
die "$path not RIFF but $riff" if $riff ne 'RIFF'; |
| 316 |
die "$path not AMV but $amv" if $amv ne 'AMV '; |
| 317 |
|
| 318 |
while ( ! defined($d->{eof}) ) { |
| 319 |
my ( $list, $name ) = x(12,'A4x4A4'); |
| 320 |
die "not LIST but $list" if $list ne 'LIST'; |
| 321 |
print "< $list * $name\n"; |
| 322 |
|
| 323 |
if ( $name eq 'hdrl' ) { |
| 324 |
|
| 325 |
my $len = next_part( 'amvh', hex(38) ); |
| 326 |
|
| 327 |
my @names = ( qw/ms_per_frame width height fps ss mm hh/ ); |
| 328 |
my $h; |
| 329 |
map { |
| 330 |
my $v = $_; |
| 331 |
my $n = shift @names || die "no more names?"; |
| 332 |
$h->{$n} = $v; |
| 333 |
} x($len, 'Vx28VVVx8CCv'); |
| 334 |
|
| 335 |
printf "## %s %d*%d %s fps (%d ms/frame) %02d:%02d:%02d\n", |
| 336 |
$path, |
| 337 |
$h->{width}, $h->{height}, $h->{fps}, $h->{ms_per_frame}, |
| 338 |
$h->{hh}, $h->{mm}, $h->{ss}; |
| 339 |
|
| 340 |
$d->{amvh} = $h; |
| 341 |
|
| 342 |
} elsif ( $name eq 'strl' ) { |
| 343 |
|
| 344 |
next_part( 'strh', 0, 1 ); |
| 345 |
next_part( 'strf', 0, 1 ); |
| 346 |
|
| 347 |
} elsif ( $name eq 'movi' ) { |
| 348 |
|
| 349 |
while (1) { |
| 350 |
my $frame = $d->{movi}++; |
| 351 |
|
| 352 |
my $len = next_part( '00dc' ); |
| 353 |
last unless $len; |
| 354 |
printf "<< %s 00dc - frame %d jpeg %d 0x%x bytes\n", $name, $frame, $len, $len; |
| 355 |
mkjpg( x($len) ); |
| 356 |
|
| 357 |
$len = next_part( '01wb', 0, 1 ); |
| 358 |
printf "<< %s 01wb - frame %d audio %d 0x%x bytes\n", $name, $frame, $len, $len; |
| 359 |
}; |
| 360 |
|
| 361 |
} else { |
| 362 |
die "unknown $list $name"; |
| 363 |
} |
| 364 |
} |
| 365 |
|
| 366 |
my $cmd = "ffmpeg -i $dump_dir/%04d.jpg -r 16 -y $dump_avi"; |
| 367 |
system($cmd) == 0 || die "can't convert frames to avi using $cmd: $!"; |
| 368 |
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