10 |
# http://www.obrador.com/essentialjpeg/HeaderInfo.htm |
# http://www.obrador.com/essentialjpeg/HeaderInfo.htm |
11 |
# http://lists.helixcommunity.org/pipermail/datatype-dev/2005-January/001886.html |
# http://lists.helixcommunity.org/pipermail/datatype-dev/2005-January/001886.html |
12 |
# http://mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm |
# http://mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm |
13 |
|
# http://wiki.multimedia.cx/index.php?title=IMA_ADPCM |
14 |
|
|
15 |
use strict; |
use strict; |
16 |
|
|
19 |
use File::Path; |
use File::Path; |
20 |
use Getopt::Long; |
use Getopt::Long; |
21 |
|
|
22 |
my $dump = 0; |
my $dump_amv = 0; |
23 |
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my $dump_video = 0; |
24 |
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my $dump_jpeg = 0; |
25 |
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my $dump_audio = 0; |
26 |
my $debug = 0; |
my $debug = 0; |
27 |
my $verbose = 0; |
my $verbose = 0; |
28 |
my $dump_dir = '/tmp/dump/'; |
my $dump_dir = '/tmp/dump/'; |
32 |
my $jpegtran; |
my $jpegtran; |
33 |
|
|
34 |
GetOptions( |
GetOptions( |
35 |
"dump!" => \$dump, |
"dump-amv!" => \$dump_amv, |
36 |
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"dump-video!" => \$dump_video, |
37 |
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"dump-jpeg!" => \$dump_jpeg, |
38 |
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"dump-audio!" => \$dump_audio, |
39 |
"debug!" => \$debug, |
"debug!" => \$debug, |
40 |
"dump-dir=s" => \$dump_dir, |
"dump-dir=s" => \$dump_dir, |
41 |
"no-jpeg-headers!" => \$no_jpeg_header, |
"no-jpeg-headers!" => \$no_jpeg_header, |
46 |
my $path = shift @ARGV || die "usage: $0 movie.amv\n"; |
my $path = shift @ARGV || die "usage: $0 movie.amv\n"; |
47 |
|
|
48 |
# by default, flip frames |
# by default, flip frames |
49 |
#$jpegtran = '-flip vertical' unless defined($jpegtran); |
$jpegtran = '-flip vertical' unless defined($jpegtran); |
50 |
|
|
51 |
rmtree $dump_dir if -e $dump_dir; |
rmtree $dump_dir if -e $dump_dir; |
52 |
mkpath $dump_dir || die "can't create $dump_dir: $!"; |
mkpath $dump_dir || die "can't create $dump_dir: $!"; |
53 |
|
|
54 |
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$| = 1; |
55 |
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|
56 |
open(my $fh, '<', $path) || die "can't open $path: $!"; |
open(my $fh, '<', $path) || die "can't open $path: $!"; |
57 |
|
|
58 |
# offset in file |
# offset in file |
62 |
my $d; |
my $d; |
63 |
|
|
64 |
sub hex_dump { |
sub hex_dump { |
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return unless $dump; |
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|
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|
65 |
my ( $bytes, $offset ) = @_; |
my ( $bytes, $offset ) = @_; |
66 |
return unless $bytes; |
return unless $bytes; |
67 |
|
|
103 |
my $r_len = length($bytes); |
my $r_len = length($bytes); |
104 |
confess "read $r_len bytes, expected $len" if $len != $r_len; |
confess "read $r_len bytes, expected $len" if $len != $r_len; |
105 |
|
|
106 |
hex_dump( $bytes ); |
if ( $dump_amv ) { |
107 |
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print "## raw $len bytes\n"; |
108 |
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hex_dump( $bytes ); |
109 |
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} |
110 |
|
|
111 |
if ( $bytes eq 'AMV_END_' ) { |
if ( $bytes eq 'AMV_END_' ) { |
112 |
print "> end of file marker AMV_END_\n" if $dump; |
print "> end of file marker AMV_END_\n" if $dump_video; |
113 |
$d->{eof}++; |
$d->{eof}++; |
114 |
return; |
return; |
115 |
} |
} |
149 |
$out .= chr($t); |
$out .= chr($t); |
150 |
} |
} |
151 |
|
|
152 |
if ( $dump ) { |
if ( $dump_video ) { |
153 |
print "## quantization table original\n"; |
print "## quantization table original\n"; |
154 |
hex_dump( $in ); |
hex_dump( $in ); |
155 |
print "## quantization table for $jpeg_q %\n"; |
print "## quantization table for $jpeg_q %\n"; |
363 |
0, # Ah, Ai (not used) |
0, # Ah, Ai (not used) |
364 |
); |
); |
365 |
|
|
366 |
if ( $dump ) { |
if ( $dump_jpeg ) { |
367 |
print "## created JPEG header...\n"; |
print "## created JPEG header...\n"; |
368 |
hex_dump( $header, 0 ); |
hex_dump( $header, 0 ); |
369 |
} |
} |
389 |
print ">> created $frame_nr ", $no_jpeg_header ? 'raw' : '', " jpeg $path ", -s $path, " bytes\n" if $verbose; |
print ">> created $frame_nr ", $no_jpeg_header ? 'raw' : '', " jpeg $path ", -s $path, " bytes\n" if $verbose; |
390 |
} |
} |
391 |
|
|
392 |
my ( $riff, $amv ) = x(12, 'Z4x4Z4'); |
# |
393 |
die "$path not RIFF but $riff" if $riff ne 'RIFF'; |
# IMA ADPCM decoder |
394 |
die "$path not AMV but $amv" if $amv ne 'AMV '; |
# |
395 |
|
|
396 |
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my @index_adjust = ( -1, -1, -1, -1, 2, 4, 6, 8 ); |
397 |
|
|
398 |
|
my @step_size = ( |
399 |
|
7, 8, 9, 10, 11, 12, 13, 14, 16, 17, |
400 |
|
19, 21, 23, 25, 28, 31, 34, 37, 41, 45, |
401 |
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50, 55, 60, 66, 73, 80, 88, 97, 107, 118, |
402 |
|
130, 143, 157, 173, 190, 209, 230, 253, 279, 307, |
403 |
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337, 371, 408, 449, 494, 544, 598, 658, 724, 796, |
404 |
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876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066, |
405 |
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2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358, |
406 |
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5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899, |
407 |
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15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767 |
408 |
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); |
409 |
|
|
410 |
my $apath = "$dump_dir/audio.wav"; |
my $pred_val = 0; |
411 |
open(my $audio_fh, '>', $apath) || die "can't open audio file $apath: $!"; |
my $step_idx = 0; |
412 |
|
|
413 |
print $audio_fh pack 'a4Va4a4VvvVVv4', ( |
# This code is "borrowed" from the ALSA library |
414 |
# header 'RIFF', size |
# http://www.alsa-project.org |
415 |
'RIFF',-1, |
|
416 |
# type: 'WAVE' |
sub adpcm_decode_sample { |
417 |
'WAVE', |
my $code = shift; |
418 |
'fmt ',0x14, |
|
419 |
# format: DVI (IMA) ADPCM Wave Type |
my $pred_diff; # Predicted difference to next sample |
420 |
0x11, |
my $step; # holds previous step_size value |
421 |
# channels |
|
422 |
1, |
# Separate sign and magnitude |
423 |
# samples/sec |
my $sign = $code & 0x8; |
424 |
|
$code &= 0x7; |
425 |
|
|
426 |
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# Computes pred_diff = (code + 0.5) * step / 4, |
427 |
|
# but see comment in adpcm_coder. |
428 |
|
|
429 |
|
$step = $step_size[$step_idx] || die "no step_size[$step_idx]"; |
430 |
|
|
431 |
|
# Compute difference and new predicted value |
432 |
|
$pred_diff = $step >> 3; |
433 |
|
my $i = 0x4; |
434 |
|
while( $i ) { |
435 |
|
if ($code & $i) { |
436 |
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$pred_diff += $step; |
437 |
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} |
438 |
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$i >>= 1; |
439 |
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$step >>= 1; |
440 |
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} |
441 |
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$pred_val += $sign ? -$pred_diff : $pred_diff; |
442 |
|
|
443 |
|
# Clamp output value |
444 |
|
if ($pred_val > 32767) { |
445 |
|
$pred_val = 32767; |
446 |
|
} elsif ($pred_val < -32768) { |
447 |
|
$pred_val = -32768; |
448 |
|
} |
449 |
|
|
450 |
|
# Find new step_size index value |
451 |
|
$step_idx += $index_adjust[$code]; |
452 |
|
|
453 |
|
if ($step_idx < 0) { |
454 |
|
$step_idx = 0; |
455 |
|
} elsif ($step_idx > 88) { |
456 |
|
$step_idx = 88; |
457 |
|
} |
458 |
|
return $pred_val; |
459 |
|
} |
460 |
|
|
461 |
|
my $au_path = "$dump_dir/sound.au"; |
462 |
|
open(my $au_fh, '>', $au_path) || die "can't open $au_path: $!"; |
463 |
|
print $au_fh pack 'a4N5', ( |
464 |
|
# magic |
465 |
|
'.snd', |
466 |
|
# data offset |
467 |
|
24, |
468 |
|
# data size |
469 |
|
-1, |
470 |
|
# encoding - 16-bit linear PCM |
471 |
|
3, |
472 |
|
# sample rate |
473 |
22050, |
22050, |
474 |
# avg. bytes/sec (for esimation) |
#channels |
475 |
11567, |
1, |
|
# block align (size of block) |
|
|
0x800, |
|
|
# bits per sample (mono data) |
|
|
4, |
|
|
# cbSize (ADPCM with 7 soefficient pairs) |
|
|
2, |
|
|
# nSamplesPerBlock |
|
|
# (((nBlockAlign - (7 * nChannels)) * 8) / (wBitsPerSample * nChannels)) + 2 |
|
|
0x0ff9, |
|
476 |
); |
); |
477 |
|
|
478 |
print $audio_fh pack 'a4VVa4V', ( |
sub audio_frame { |
479 |
# time length of the data in samples |
my $data = shift || die "no data?"; |
480 |
'fact',4, |
|
481 |
220500, |
my ( $origin, $index, $bytes ) = unpack 'ssL', substr($data,0,8); |
|
# |
|
|
'data',-1, |
|
|
); |
|
482 |
|
|
483 |
my $riff_header_len = tell($audio_fh); |
$pred_val = $origin; |
484 |
|
$step_idx = $index; |
485 |
|
|
486 |
|
foreach my $b ( map { ord($_) } split(//, substr($data,8)) ) { |
487 |
|
print $au_fh pack 'n', adpcm_decode_sample( $b >> 4 ); |
488 |
|
print $au_fh pack 'n', adpcm_decode_sample( $b & 15 ); |
489 |
|
} |
490 |
|
} |
491 |
|
|
492 |
|
|
493 |
|
sub x_audio_frame { |
494 |
|
my $data = shift || die "no data?"; |
495 |
|
|
496 |
|
my $apath = sprintf("$dump_dir/%04d.wav", $frame_nr ); |
497 |
|
open(my $audio_fh, '>', $apath) || die "can't open audio file $apath: $!"; |
498 |
|
|
499 |
|
print $audio_fh pack 'a4Va4a4VvvVVv4', ( |
500 |
|
# header 'RIFF', size |
501 |
|
'RIFF',-1, |
502 |
|
# type: 'WAVE' |
503 |
|
'WAVE', |
504 |
|
'fmt ',0x14, |
505 |
|
# format: DVI (IMA) ADPCM Wave Type |
506 |
|
0x11, |
507 |
|
# channels |
508 |
|
1, |
509 |
|
# samples/sec |
510 |
|
22050, |
511 |
|
# avg. bytes/sec (for esimation) |
512 |
|
11567, |
513 |
|
# block align (size of block) |
514 |
|
0x800, |
515 |
|
# bits per sample (mono data) |
516 |
|
4, |
517 |
|
# cbSize (ADPCM with 7 soefficient pairs) |
518 |
|
2, |
519 |
|
# nSamplesPerBlock |
520 |
|
# (((nBlockAlign - (7 * nChannels)) * 8) / (wBitsPerSample * nChannels)) + 2 |
521 |
|
0x03f9, |
522 |
|
); |
523 |
|
|
524 |
|
print $audio_fh pack 'a4VVa4V', ( |
525 |
|
# time length of the data in samples |
526 |
|
'fact',4, |
527 |
|
220500, |
528 |
|
# |
529 |
|
'data',-1, |
530 |
|
); |
531 |
|
|
532 |
|
my $riff_header_len = tell($audio_fh); |
533 |
|
|
534 |
|
print $audio_fh $data; |
535 |
|
|
536 |
|
my $size = tell($audio_fh); |
537 |
|
warn "## wav file $apath size: $size\n"; |
538 |
|
|
539 |
|
seek( $audio_fh, 4, 0 ); |
540 |
|
print $audio_fh pack("V", $size - 8); |
541 |
|
seek( $audio_fh, $riff_header_len - 4, 0 ); |
542 |
|
print $audio_fh pack("V", $size - $riff_header_len); |
543 |
|
|
544 |
|
close($audio_fh) || die "can't close audio file $apath: $!"; |
545 |
|
} |
546 |
|
|
547 |
|
# |
548 |
|
# read AMV file |
549 |
|
# |
550 |
|
|
551 |
|
my ( $riff, $amv ) = x(12, 'Z4x4Z4'); |
552 |
|
die "$path not RIFF but $riff" if $riff ne 'RIFF'; |
553 |
|
die "$path not AMV but $amv" if $amv ne 'AMV '; |
554 |
|
|
555 |
|
my $fps = 16; |
556 |
|
my $duration; |
557 |
|
|
558 |
while ( ! defined($d->{eof}) ) { |
while ( ! defined($d->{eof}) ) { |
559 |
my ( $list, $name ) = x(12,'A4x4A4'); |
my ( $list, $name ) = x(12,'A4x4A4'); |
572 |
$h->{$n} = $v; |
$h->{$n} = $v; |
573 |
} x($len, 'Vx28VVVx8CCv'); |
} x($len, 'Vx28VVVx8CCv'); |
574 |
|
|
575 |
printf "## %s %d*%d %s fps (%d ms/frame) %02d:%02d:%02d\n", |
$duration = sprintf('%02d:%02d:%02d', $h->{hh}, $h->{mm}, $h->{ss} ); |
576 |
|
|
577 |
|
printf "## %s %d*%d %s fps (%d ms/frame) %s\n", |
578 |
$path, |
$path, |
579 |
$h->{width}, $h->{height}, $h->{fps}, $h->{ms_per_frame}, |
$h->{width}, $h->{height}, $h->{fps}, $h->{ms_per_frame}, |
580 |
$h->{hh}, $h->{mm}, $h->{ss}; |
$duration; |
581 |
|
|
582 |
$d->{amvh} = $h; |
$d->{amvh} = $h; |
583 |
|
$fps = $h->{fps}; |
584 |
|
|
585 |
} elsif ( $name eq 'strl' ) { |
} elsif ( $name eq 'strl' ) { |
586 |
|
|
602 |
|
|
603 |
my $audio_frame = x( $len ); |
my $audio_frame = x( $len ); |
604 |
|
|
605 |
# remove 8 bytes of something |
if ( $dump_audio ) { |
606 |
$audio_frame = substr( $audio_frame, 8 ); |
printf "#### dumping audio frame %d 0x%x bytes\n", length($audio_frame), length($audio_frame); |
|
|
|
|
if ( length($audio_frame) % 2 == 0 ) { |
|
|
print "#### even sized frame!"; |
|
|
# $audio_frame = substr( $audio_frame, 0, -1 ); |
|
|
} |
|
|
|
|
|
if ( $dump ) { |
|
|
print "#### dumping audio frame ", length($audio_frame), " bytes\n"; |
|
607 |
hex_dump( $audio_frame ); |
hex_dump( $audio_frame ); |
608 |
} |
} |
609 |
|
|
610 |
# print $audio_fh mp3_frame; |
# print $audio_fh mp3_frame; |
611 |
print $audio_fh $audio_frame || die "can't write audio frame in $apath: $!"; |
audio_frame( $audio_frame ); |
612 |
|
|
613 |
$frame_nr++; |
$frame_nr++; |
614 |
|
|
615 |
|
if ( $frame_nr % $fps == 0 ) { |
616 |
|
print "\n" if ( ( $frame_nr / $fps ) % 60 == 0 ); |
617 |
|
print "."; |
618 |
|
} |
619 |
}; |
}; |
620 |
|
|
621 |
} else { |
} else { |
623 |
} |
} |
624 |
} |
} |
625 |
|
|
626 |
my $cmd = "ffmpeg -i $dump_dir/%04d.jpg -r 16 -y $dump_avi"; |
my $cmd = "ffmpeg -r $fps -i $dump_dir/%04d.jpg -i $au_path -y $dump_avi"; |
627 |
system($cmd) == 0 || die "can't convert frames to avi using $cmd: $!"; |
system($cmd) == 0 || die "can't convert frames to avi using $cmd: $!"; |
628 |
|
|
629 |
my $size = tell($audio_fh); |
print ">>>> created $frame_nr frames $dump_avi ", -s $dump_avi, "\n"; |
|
warn "## wav file size: $size\n"; |
|
|
|
|
|
seek( $audio_fh, 4, 0 ); |
|
|
print $audio_fh pack("V", $size - 8); |
|
|
seek( $audio_fh, $riff_header_len - 4, 0 ); |
|
|
print $audio_fh pack("V", $size - $riff_header_len); |
|
|
|
|
|
close($audio_fh) || die "can't close audio file $apath: $!"; |
|
|
|
|
|
print ">>>> created $frame_nr frames $dump_avi ", -s $dump_avi, " and $apath ", -s $apath, "\n"; |
|