3 |
# amv.pl |
# amv.pl |
4 |
# |
# |
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# 07/19/07 19:21:39 CEST Dobrica Pavlinusic <dpavlin@rot13.org> |
# 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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# http://mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm |
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# http://wiki.multimedia.cx/index.php?title=IMA_ADPCM |
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|
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use strict; |
use strict; |
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|
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use Data::Dump qw/dump/; |
use Data::Dump qw/dump/; |
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use Carp qw/confess/; |
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_amv = 0; |
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my $dump_video = 0; |
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my $dump_jpeg = 0; |
25 |
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my $dump_audio = 0; |
26 |
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my $debug = 0; |
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my $verbose = 0; |
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my $dump_dir = '/tmp/dump/'; |
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my $dump_avi = "dump.avi"; |
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my $no_jpeg_header = 0; |
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my $jpeg_q = 100; |
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my $jpegtran; |
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|
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GetOptions( |
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"dump-amv!" => \$dump_amv, |
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"dump-video!" => \$dump_video, |
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"dump-jpeg!" => \$dump_jpeg, |
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"dump-audio!" => \$dump_audio, |
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"debug!" => \$debug, |
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"dump-dir=s" => \$dump_dir, |
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"no-jpeg-headers!" => \$no_jpeg_header, |
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"jpegtran=s" => \$jpegtran, |
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"verbose!" => \$verbose, |
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); |
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|
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my $path = shift @ARGV || die "usage: $0 movie.amv\n"; |
my $path = shift @ARGV || die "usage: $0 movie.amv\n"; |
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|
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# by default, flip frames |
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$jpegtran = '-flip vertical' unless defined($jpegtran); |
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|
51 |
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rmtree $dump_dir if -e $dump_dir; |
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mkpath $dump_dir || die "can't create $dump_dir: $!"; |
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|
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$| = 1; |
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|
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open(my $fh, '<', $path) || die "can't open $path: $!"; |
open(my $fh, '<', $path) || die "can't open $path: $!"; |
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|
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# offset in file |
# offset in file |
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my $d; |
my $d; |
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|
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sub hex_dump { |
sub hex_dump { |
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my $bytes = shift || return; |
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; |
my $ascii = $bytes; |
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$ascii =~ s/\W/./gs; |
$ascii =~ s/\W/./gs; |
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my $hex = unpack('h*', $bytes); |
my $hex = uc( unpack('h*', $bytes) ); |
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$hex =~ s/(..)/$1 /g; |
$hex =~ s/(..)/$1 /g; |
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# calculate number of characters for offset |
# calculate number of characters for offset |
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#my $d = length( sprintf("%x",length($bytes)) ); |
#my $d = length( sprintf("%x",length($bytes)) ); |
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last; |
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 { |
sub x { |
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my $r_len = length($bytes); |
my $r_len = length($bytes); |
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confess "read $r_len bytes, expected $len" if $len != $r_len; |
confess "read $r_len bytes, expected $len" if $len != $r_len; |
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|
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hex_dump( $bytes ); |
if ( $dump_amv ) { |
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print "## raw $len bytes\n"; |
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hex_dump( $bytes ); |
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} |
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|
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if ( $bytes eq 'AMV_END_' ) { |
if ( $bytes eq 'AMV_END_' ) { |
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warn "> end of file marker AMV_END_\n"; |
print "> end of file marker AMV_END_\n" if $dump_video; |
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$d->{eof}++; |
$d->{eof}++; |
114 |
return; |
return; |
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} |
} |
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|
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if ( $format ) { |
if ( $format ) { |
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my @data = unpack($format, $bytes); |
my @data = unpack($format, $bytes); |
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warn "## unpacked = ",dump(@data),"\n"; |
print "## unpacked = ",dump(@data),"\n" if $debug; |
120 |
return @data; |
return @data; |
121 |
} else { |
} else { |
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return $bytes; |
return $bytes; |
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} |
} |
124 |
} |
} |
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|
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# my $len = next_part( 'boob' ); |
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# my ( $len, $part ) = next_part(); |
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|
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sub next_part { |
sub next_part { |
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my ( $expected_part, $expected_len, $skip ) = @_; |
my ( $expected_part, $expected_len, $skip ) = @_; |
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my ( $part, $len ) = x(8,'A4V'); |
my ( $part, $len ) = x(8,'A4V'); |
132 |
return unless $len; |
return unless $len; |
133 |
confess "not $expected_part but $part" if $expected_part ne $part; |
confess "not $expected_part but $part" if $expected_part && $expected_part ne $part; |
134 |
if ( $expected_len ) { |
if ( $expected_len ) { |
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confess "expected $expected_len bytes for $part got $len" if $len != $expected_len; |
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; |
printf "## next_part %s - %d 0x%x bytes\n", $part, $len, $len if $debug; |
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x($len) if $skip; |
x($len) if $skip; |
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return ( $len, $part ) if wantarray; |
140 |
return $len; |
return $len; |
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} |
} |
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|
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my ( $riff, $amv ) = x(12, 'Z8Z4'); |
sub quality { |
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die "not RIFF but $riff" if $riff ne 'RIFF'; |
my @table = @_; |
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die "not AMV but $amv" if $amv ne 'AMV '; |
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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|
150 |
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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_video ) { |
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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"; |
160 |
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hex_dump( $out ); |
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} |
162 |
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return $out; |
164 |
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} |
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|
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=for obsolete |
167 |
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168 |
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sub mp3_frame { |
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my $frame = join('', |
170 |
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# Frame sync (all bits set) |
171 |
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1 x 11 . |
172 |
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# MPEG Audio version ID |
173 |
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# 00 - MPEG Version 2.5 (unofficial) |
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# 01 - reserved |
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# 10 - MPEG Version 2 (ISO/IEC 13818-3) |
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# 11 - MPEG Version 1 (ISO/IEC 11172-3) |
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1,0, |
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# Layer description |
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# 00 - reserved |
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# 01 - Layer III |
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# 10 - Layer II |
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# 11 - Layer I |
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0,1, |
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# Protection bit |
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# 0 - Protected by CRC (16bit crc follows header) |
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# 1 - Not protected |
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0, |
188 |
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# Bitrate index |
189 |
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0,0,0,0, |
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# Sampling rate frequency index (22050) |
191 |
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0,0, |
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# Padding bit |
193 |
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# 0 - frame is not padded |
194 |
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# 1 - frame is padded with one extra slot |
195 |
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0, |
196 |
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# Private bit |
197 |
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0, |
198 |
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# Channel Mode |
199 |
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# 00 - Stereo |
200 |
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# 01 - Joint stereo (Stereo) |
201 |
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# 10 - Dual channel (2 mono channels) |
202 |
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# 11 - Single channel (Mono) |
203 |
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1,1, |
204 |
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# Mode extension (Only if Joint stereo) |
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0,0, |
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# Copyright |
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0, |
208 |
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# Original |
209 |
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0, |
210 |
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# Emphasis |
211 |
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# 00 - none |
212 |
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# 01 - 50/15 ms |
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# 10 - reserved |
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# 11 - CCIT J.17 |
215 |
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0,0, |
216 |
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); |
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die "frame must have 32 bits, not ", length($frame), " for $frame" if length($frame) != 32; |
219 |
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220 |
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my $bits = pack("b32", $frame); |
221 |
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die "packed bits must be 4 bytes, not $bits" if length($bits) != 4; |
223 |
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224 |
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my $t = $frame; |
225 |
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$t =~ s/(.{8})/$1 /g; |
226 |
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warn "## mp3 frame frame = $t\n"; |
227 |
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|
228 |
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return $bits; |
229 |
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} |
230 |
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=cut |
232 |
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|
233 |
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my @subframes; |
234 |
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my $frame_nr = 1; |
235 |
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|
236 |
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# how many subframes to join into single frame? |
237 |
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my $join_subframes = 0; |
238 |
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|
239 |
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sub mkjpg { |
240 |
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my ($data) = @_; |
241 |
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|
242 |
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confess "no SOI marker in data" if substr($data,0,2) ne "\xFF\xD8"; |
243 |
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confess "no EOI marker in data" if substr($data,-2,2) ne "\xFF\xD9"; |
244 |
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$data = substr($data,2,-2); |
245 |
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|
246 |
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if ( $#subframes < ( $join_subframes - 1 ) ) { |
247 |
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push @subframes, $data; |
248 |
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print "## saved $frame_nr/", $#subframes + 1, " subframe of ", length($data), " bytes\n" if $debug; |
249 |
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return; |
250 |
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} |
251 |
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|
252 |
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my $w = $d->{amvh}->{width} || die "no width?"; |
253 |
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my $h = $d->{amvh}->{height} || confess "no height?"; |
254 |
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|
255 |
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my $header = |
256 |
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# Start of Image (SOI) marker |
257 |
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"\xFF\xD8". |
258 |
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# JFIF marker |
259 |
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"\xFF\xE0". |
260 |
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pack("nZ5CCCnnCC", |
261 |
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16, # length |
262 |
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'JFIF', # identifier (JFIF) |
263 |
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1,1, # version |
264 |
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0, # units (none) |
265 |
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1,1, # X,Y density |
266 |
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0,0, # X,Y thumbnail |
267 |
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). |
268 |
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"\xFF\xFE". |
269 |
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"\x00\x3CCREATOR: amv dumper (compat. IJG JPEG v62), quality = 100\n". |
270 |
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# quantization table (quaility=100%) |
271 |
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"\xFF\xDB". |
272 |
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"\x00\x43". |
273 |
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# 8 bit values, table 1 |
274 |
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"\x00". |
275 |
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quality( |
276 |
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0x10, 0x0B, 0x0C, 0x0E, 0x0C, 0x0A, 0x10, 0x0E, |
277 |
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0x0D, 0x0E, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28, |
278 |
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0x1A, 0x18, 0x16, 0x16, 0x18, 0x31, 0x23, 0x25, |
279 |
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0x1D, 0x28, 0x3A, 0x33, 0x3D, 0x3C, 0x39, 0x33, |
280 |
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0x38, 0x37, 0x40, 0x48, 0x5C, 0x4E, 0x40, 0x44, |
281 |
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0x57, 0x45, 0x37, 0x38, 0x50, 0x6D, 0x51, 0x57, |
282 |
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0x5F, 0x62, 0x67, 0x68, 0x67, 0x3E, 0x4D, 0x71, |
283 |
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0x79, 0x70, 0x64, 0x78, 0x5C, 0x65, 0x67, 0x63, |
284 |
|
). |
285 |
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"\xFF\xDB". |
286 |
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"\x00\x43". |
287 |
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# 8 bit values, table 1 |
288 |
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"\x01". |
289 |
|
quality( |
290 |
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0x11, 0x12, 0x12, 0x18, 0x15, 0x18, 0x2F, 0x1A, |
291 |
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0x1A, 0x2F, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63, |
292 |
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, |
293 |
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, |
294 |
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, |
295 |
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, |
296 |
|
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, |
297 |
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0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, |
298 |
|
). |
299 |
|
# start of frame |
300 |
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"\xFF\xC0". |
301 |
|
pack("ncnncc9", |
302 |
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17, # len |
303 |
|
8, # sample precision in bits |
304 |
|
$h,$w, # X,Y size |
305 |
|
3, # number of components |
306 |
|
1,0x22,0, # Component ID, H+V sampling factors, Quantization table number |
307 |
|
2,0x11,1, |
308 |
|
3,0x11,1, |
309 |
|
). |
310 |
|
# Define huffman table (section B.2.4.1) |
311 |
|
"\xFF\xC4". # Marker |
312 |
|
"\x00\x1F". # Length (31 bytes) |
313 |
|
"\x00". # DC luminance, table 0 |
314 |
|
"\x00\x01\x05\x01\x01\x01\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00". |
315 |
|
"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B". |
316 |
|
# Define huffman table (section B.2.4.1) |
317 |
|
"\xFF\xC4". # Marker |
318 |
|
"\x00\xB5". # Length (181 bytes) |
319 |
|
"\x10". # AC luminance, table 0 |
320 |
|
"\x00\x02\x01\x03\x03\x02\x04\x03\x05\x05\x04\x04\x00\x00\x01\x7D". |
321 |
|
"\x01\x02\x03\x00\x04\x11\x05\x12". |
322 |
|
"\x21\x31\x41\x06\x13\x51\x61\x07\x22\x71\x14\x32". |
323 |
|
"\x81\x91\xA1\x08\x23\x42\xB1\xC1\x15\x52\xD1\xF0". |
324 |
|
"\x24\x33\x62\x72\x82\x09\x0A\x16\x17\x18\x19\x1A". |
325 |
|
"\x25\x26\x27\x28\x29\x2A\x34\x35\x36\x37\x38\x39". |
326 |
|
"\x3A\x43\x44\x45\x46\x47\x48\x49\x4A\x53\x54\x55". |
327 |
|
"\x56\x57\x58\x59\x5A\x63\x64\x65\x66\x67\x68\x69". |
328 |
|
"\x6A\x73\x74\x75\x76\x77\x78\x79\x7A\x83\x84\x85". |
329 |
|
"\x86\x87\x88\x89\x8A\x92\x93\x94\x95\x96\x97\x98". |
330 |
|
"\x99\x9A\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9\xAA\xB2". |
331 |
|
"\xB3\xB4\xB5\xB6\xB7\xB8\xB9\xBA\xC2\xC3\xC4\xC5". |
332 |
|
"\xC6\xC7\xC8\xC9\xCA\xD2\xD3\xD4\xD5\xD6\xD7\xD8". |
333 |
|
"\xD9\xDA\xE1\xE2\xE3\xE4\xE5\xE6\xE7\xE8\xE9\xEA". |
334 |
|
"\xF1\xF2\xF3\xF4\xF5\xF6\xF7\xF8\xF9\xFA". |
335 |
|
# Define huffman table (section B.2.4.1) |
336 |
|
"\xFF\xC4". # Marker |
337 |
|
"\x00\x1F". # Length (31 bytes) |
338 |
|
"\x01". # DC chrominance, table 1 |
339 |
|
"\x00\x03\x01\x01\x01\x01\x01\x01\x01\x01\x01\x00". |
340 |
|
"\x00\x00\x00\x00". |
341 |
|
"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B". |
342 |
|
#/* Define huffman table (section B.2.4.1) */ |
343 |
|
"\xFF\xC4". # Marker |
344 |
|
"\x00\xB5". # Length (181 bytes) |
345 |
|
"\x11". # AC chrominance, table 1 |
346 |
|
"\x00\x02\x01\x02\x04\x04\x03\x04\x07\x05\x04\x04". |
347 |
|
"\x00\x01\x02\x77". |
348 |
|
"\x00\x01\x02\x03\x11\x04\x05\x21". |
349 |
|
"\x31\x06\x12\x41\x51\x07\x61\x71\x13\x22\x32\x81". |
350 |
|
"\x08\x14\x42\x91\xA1\xB1\xC1\x09\x23\x33\x52\xF0". |
351 |
|
"\x15\x62\x72\xD1\x0A\x16\x24\x34\xE1\x25\xF1\x17". |
352 |
|
"\x18\x19\x1A\x26\x27\x28\x29\x2A\x35\x36\x37\x38". |
353 |
|
"\x39\x3A\x43\x44\x45\x46\x47\x48\x49\x4A\x53\x54". |
354 |
|
"\x55\x56\x57\x58\x59\x5A\x63\x64\x65\x66\x67\x68". |
355 |
|
"\x69\x6A\x73\x74\x75\x76\x77\x78\x79\x7A\x82\x83". |
356 |
|
"\x84\x85\x86\x87\x88\x89\x8A\x92\x93\x94\x95\x96". |
357 |
|
"\x97\x98\x99\x9A\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9". |
358 |
|
"\xAA\xB2\xB3\xB4\xB5\xB6\xB7\xB8\xB9\xBA\xC2\xC3". |
359 |
|
"\xC4\xC5\xC6\xC7\xC8\xC9\xCA\xD2\xD3\xD4\xD5\xD6". |
360 |
|
"\xD7\xD8\xD9\xDA\xE2\xE3\xE4\xE5\xE6\xE7\xE8\xE9". |
361 |
|
"\xEA\xF2\xF3\xF4\xF5\xF6\xF7\xF8\xF9\xFA". |
362 |
|
# Start of Scan marker |
363 |
|
"\xFF\xDA". |
364 |
|
pack("nC10", |
365 |
|
12, # length |
366 |
|
3, # number of components |
367 |
|
1,0x00, # Scan 1: use DC/AC huff tables 0/0 |
368 |
|
2,0x11, # Scan 2: use DC/AC huff tables 1/1 |
369 |
|
3,0x11, # Scan 3: use DC/AC huff tables 1/1 |
370 |
|
0,0x3f, # Ss, Se |
371 |
|
0, # Ah, Ai (not used) |
372 |
|
); |
373 |
|
|
374 |
|
if ( $dump_jpeg ) { |
375 |
|
print "## created JPEG header...\n"; |
376 |
|
hex_dump( $header, 0 ); |
377 |
|
} |
378 |
|
|
379 |
|
my $frame = join('', @subframes ) . $data; |
380 |
|
@subframes = (); |
381 |
|
|
382 |
|
my $path = sprintf("$dump_dir/%04d.jpg", $frame_nr ); |
383 |
|
|
384 |
|
my $fh; |
385 |
|
if ( $jpegtran ) { |
386 |
|
open($fh, '|-', "jpegtran $jpegtran > $path") || die "can't create $path: $!"; |
387 |
|
} else { |
388 |
|
open($fh, '>', $path) || die "can't create $path: $!"; |
389 |
|
} |
390 |
|
|
391 |
|
if ( ! $no_jpeg_header ) { |
392 |
|
print $fh $header . $frame . "\xFF\xD9" || die "can't write jpeg $path: $!"; |
393 |
|
} else { |
394 |
|
print $fh $frame || die "can't write raw jpeg $path: $!"; |
395 |
|
} |
396 |
|
close $fh || die "can't close $path: $!"; |
397 |
|
print ">> created $frame_nr ", $no_jpeg_header ? 'raw' : '', " jpeg $path ", -s $path, " bytes\n" if $verbose; |
398 |
|
} |
399 |
|
|
400 |
|
# |
401 |
|
# IMA ADPCM decoder |
402 |
|
# |
403 |
|
|
404 |
|
my @index_adjust = ( -1, -1, -1, -1, 2, 4, 6, 8 ); |
405 |
|
|
406 |
|
my @step_size = ( |
407 |
|
7, 8, 9, 10, 11, 12, 13, 14, 16, 17, |
408 |
|
19, 21, 23, 25, 28, 31, 34, 37, 41, 45, |
409 |
|
50, 55, 60, 66, 73, 80, 88, 97, 107, 118, |
410 |
|
130, 143, 157, 173, 190, 209, 230, 253, 279, 307, |
411 |
|
337, 371, 408, 449, 494, 544, 598, 658, 724, 796, |
412 |
|
876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066, |
413 |
|
2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358, |
414 |
|
5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899, |
415 |
|
15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767 |
416 |
|
); |
417 |
|
|
418 |
|
my $pred_val = 0; |
419 |
|
my $step_idx = 0; |
420 |
|
|
421 |
|
# This code is "borrowed" from the ALSA library |
422 |
|
# http://www.alsa-project.org |
423 |
|
|
424 |
|
sub adpcm_decode_sample { |
425 |
|
my $code = shift; |
426 |
|
|
427 |
|
my $pred_diff; # Predicted difference to next sample |
428 |
|
my $step; # holds previous step_size value |
429 |
|
|
430 |
|
# Separate sign and magnitude |
431 |
|
my $sign = $code & 0x8; |
432 |
|
$code &= 0x7; |
433 |
|
|
434 |
|
# Computes pred_diff = (code + 0.5) * step / 4, |
435 |
|
# but see comment in adpcm_coder. |
436 |
|
|
437 |
|
$step = $step_size[$step_idx] || die "no step_size[$step_idx]"; |
438 |
|
|
439 |
|
# Compute difference and new predicted value |
440 |
|
$pred_diff = $step >> 3; |
441 |
|
my $i = 0x4; |
442 |
|
while( $i ) { |
443 |
|
if ($code & $i) { |
444 |
|
$pred_diff += $step; |
445 |
|
} |
446 |
|
$i >>= 1; |
447 |
|
$step >>= 1; |
448 |
|
} |
449 |
|
$pred_val += $sign ? -$pred_diff : $pred_diff; |
450 |
|
|
451 |
|
# Clamp output value |
452 |
|
if ($pred_val > 32767) { |
453 |
|
$pred_val = 32767; |
454 |
|
} elsif ($pred_val < -32768) { |
455 |
|
$pred_val = -32768; |
456 |
|
} |
457 |
|
|
458 |
|
# Find new step_size index value |
459 |
|
$step_idx += $index_adjust[$code]; |
460 |
|
|
461 |
|
if ($step_idx < 0) { |
462 |
|
$step_idx = 0; |
463 |
|
} elsif ($step_idx > 88) { |
464 |
|
$step_idx = 88; |
465 |
|
} |
466 |
|
return $pred_val; |
467 |
|
} |
468 |
|
|
469 |
|
my $au_path = "$dump_dir/sound.au"; |
470 |
|
open(my $au_fh, '>', $au_path) || die "can't open $au_path: $!"; |
471 |
|
print $au_fh pack 'a4N5', ( |
472 |
|
# magic |
473 |
|
'.snd', |
474 |
|
# data offset |
475 |
|
24, |
476 |
|
# data size |
477 |
|
-1, |
478 |
|
# encoding - 16-bit linear PCM |
479 |
|
3, |
480 |
|
# sample rate |
481 |
|
22050, |
482 |
|
#channels |
483 |
|
1, |
484 |
|
); |
485 |
|
|
486 |
|
sub audio_frame { |
487 |
|
my $data = shift || die "no data?"; |
488 |
|
|
489 |
|
my ( $origin, $index, $bytes ) = unpack 'ssL', substr($data,0,8); |
490 |
|
|
491 |
|
$pred_val = $origin; |
492 |
|
$step_idx = $index; |
493 |
|
|
494 |
|
my $size = 0; |
495 |
|
|
496 |
|
foreach my $b ( map { ord($_) } split(//, substr($data,8)) ) { |
497 |
|
print $au_fh pack 'n', adpcm_decode_sample( $b >> 4 ); |
498 |
|
print $au_fh pack 'n', adpcm_decode_sample( $b & 15 ); |
499 |
|
$size += 2; |
500 |
|
} |
501 |
|
|
502 |
|
warn "length isn't corrent $bytes != $size" if $bytes != $size; |
503 |
|
} |
504 |
|
|
505 |
|
|
506 |
|
sub x_audio_frame { |
507 |
|
my $data = shift || die "no data?"; |
508 |
|
|
509 |
|
my $apath = sprintf("$dump_dir/%04d.wav", $frame_nr ); |
510 |
|
open(my $audio_fh, '>', $apath) || die "can't open audio file $apath: $!"; |
511 |
|
|
512 |
|
print $audio_fh pack 'a4Va4a4VvvVVv4', ( |
513 |
|
# header 'RIFF', size |
514 |
|
'RIFF',-1, |
515 |
|
# type: 'WAVE' |
516 |
|
'WAVE', |
517 |
|
'fmt ',0x14, |
518 |
|
# format: DVI (IMA) ADPCM Wave Type |
519 |
|
0x11, |
520 |
|
# channels |
521 |
|
1, |
522 |
|
# samples/sec |
523 |
|
22050, |
524 |
|
# avg. bytes/sec (for esimation) |
525 |
|
11567, |
526 |
|
# block align (size of block) |
527 |
|
0x800, |
528 |
|
# bits per sample (mono data) |
529 |
|
4, |
530 |
|
# cbSize (ADPCM with 7 soefficient pairs) |
531 |
|
2, |
532 |
|
# nSamplesPerBlock |
533 |
|
# (((nBlockAlign - (7 * nChannels)) * 8) / (wBitsPerSample * nChannels)) + 2 |
534 |
|
0x03f9, |
535 |
|
); |
536 |
|
|
537 |
|
print $audio_fh pack 'a4VVa4V', ( |
538 |
|
# time length of the data in samples |
539 |
|
'fact',4, |
540 |
|
220500, |
541 |
|
# |
542 |
|
'data',-1, |
543 |
|
); |
544 |
|
|
545 |
|
my $riff_header_len = tell($audio_fh); |
546 |
|
|
547 |
|
print $audio_fh $data; |
548 |
|
|
549 |
|
my $size = tell($audio_fh); |
550 |
|
warn "## wav file $apath size: $size\n"; |
551 |
|
|
552 |
|
seek( $audio_fh, 4, 0 ); |
553 |
|
print $audio_fh pack("V", $size - 8); |
554 |
|
seek( $audio_fh, $riff_header_len - 4, 0 ); |
555 |
|
print $audio_fh pack("V", $size - $riff_header_len); |
556 |
|
|
557 |
|
close($audio_fh) || die "can't close audio file $apath: $!"; |
558 |
|
} |
559 |
|
|
560 |
|
# |
561 |
|
# read AMV file |
562 |
|
# |
563 |
|
|
564 |
|
my ( $riff, $amv ) = x(12, 'Z4x4Z4'); |
565 |
|
die "$path not RIFF but $riff" if $riff ne 'RIFF'; |
566 |
|
die "$path not AMV but $amv" if $amv ne 'AMV '; |
567 |
|
|
568 |
|
my $fps = 16; |
569 |
|
my $duration; |
570 |
|
|
571 |
while ( ! defined($d->{eof}) ) { |
while ( ! defined($d->{eof}) ) { |
572 |
my ( $list, $name ) = x(12,'A4x4A4'); |
my ( $list, $name ) = x(12,'A4x4A4'); |
573 |
die "not LIST but $list" if $list ne 'LIST'; |
die "not LIST but $list" if $list ne 'LIST'; |
574 |
print "> $list .. $name\n"; |
print "< $list * $name\n" if $verbose; |
575 |
|
|
576 |
if ( $name eq 'hdrl' ) { |
if ( $name eq 'hdrl' ) { |
577 |
|
|
585 |
$h->{$n} = $v; |
$h->{$n} = $v; |
586 |
} x($len, 'Vx28VVVx8CCv'); |
} x($len, 'Vx28VVVx8CCv'); |
587 |
|
|
588 |
printf "## %s %d*%d %s fps (%d ms/frame) %02d:%02d:%02d\n", |
$duration = sprintf('%02d:%02d:%02d', $h->{hh}, $h->{mm}, $h->{ss} ); |
589 |
$h->{path}, |
|
590 |
|
printf "## %s %d*%d %s fps (%d ms/frame) %s\n", |
591 |
|
$path, |
592 |
$h->{width}, $h->{height}, $h->{fps}, $h->{ms_per_frame}, |
$h->{width}, $h->{height}, $h->{fps}, $h->{ms_per_frame}, |
593 |
$h->{hh}, $h->{mm}, $h->{ss}; |
$duration; |
594 |
|
|
595 |
$d->{amvh} = $h; |
$d->{amvh} = $h; |
596 |
|
$fps = $h->{fps}; |
597 |
|
|
598 |
} elsif ( $name eq 'strl' ) { |
} elsif ( $name eq 'strl' ) { |
599 |
|
|
602 |
|
|
603 |
} elsif ( $name eq 'movi' ) { |
} elsif ( $name eq 'movi' ) { |
604 |
|
|
605 |
while (1) { |
my $have_parts = 1; |
606 |
|
|
607 |
|
while ( $have_parts ) { |
608 |
my $frame = $d->{movi}++; |
my $frame = $d->{movi}++; |
|
|
|
|
my $len = next_part( '00dc', 0, 1 ); |
|
|
last unless $len; |
|
|
printf ">> %s 00dc - frame %d jpeg %d 0x%x bytes\n", $name, $frame, $len, $len; |
|
609 |
|
|
610 |
my $len = next_part( '01wb', 0, 1 ); |
my $parts = 0; |
611 |
printf ">> %s 01wb - frame %d audio %d 0x%x bytes\n", $name, $frame, $len, $len; |
|
612 |
|
while ( $parts < 2 ) { |
613 |
|
|
614 |
|
my ( $len, $part ) = next_part(); |
615 |
|
|
616 |
|
if ( ! $len ) { |
617 |
|
$have_parts = 0; |
618 |
|
last; |
619 |
|
} |
620 |
|
|
621 |
|
if ( $part eq '00dc' ) { |
622 |
|
|
623 |
|
printf "<< %s 00dc - part %d jpeg %d 0x%x bytes\n", $name, $frame, $len, $len if $verbose; |
624 |
|
mkjpg( x($len) ); |
625 |
|
$parts++; |
626 |
|
|
627 |
|
} elsif ( $part eq '01wb' ) { |
628 |
|
printf "<< %s 01wb - part %d audio %d 0x%x bytes\n", $name, $frame, $len, $len if $verbose; |
629 |
|
|
630 |
|
my $audio_frame = x( $len ); |
631 |
|
|
632 |
|
if ( $dump_audio ) { |
633 |
|
printf "#### dumping audio frame %d 0x%x bytes\n", length($audio_frame), length($audio_frame); |
634 |
|
hex_dump( $audio_frame ); |
635 |
|
} |
636 |
|
|
637 |
|
# print $audio_fh mp3_frame; |
638 |
|
audio_frame( $audio_frame ); |
639 |
|
|
640 |
|
$parts++; |
641 |
|
} else { |
642 |
|
warn "unknown next part $part with $len bytes, skipping!"; |
643 |
|
} |
644 |
|
|
645 |
|
warn "## #$frame_nr $name $part has $parts parts\n" if $debug; |
646 |
|
} |
647 |
|
|
648 |
|
$frame_nr++; |
649 |
|
|
650 |
|
if ( $frame_nr % $fps == 0 ) { |
651 |
|
print "\n" if ( ( $frame_nr / $fps ) % 60 == 0 ); |
652 |
|
print "."; |
653 |
|
} |
654 |
}; |
}; |
655 |
|
|
656 |
} else { |
} else { |
657 |
die "unknown $list $name"; |
die "unknown $list $name"; |
658 |
} |
} |
659 |
} |
} |
660 |
|
|
661 |
|
my $cmd = "ffmpeg -r $fps -i $dump_dir/%04d.jpg -i $au_path -y $dump_avi"; |
662 |
|
system($cmd) == 0 || die "can't convert frames to avi using $cmd: $!"; |
663 |
|
|
664 |
|
print ">>>> created $frame_nr frames $dump_avi ", -s $dump_avi, "\n"; |