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 |
|
$| = 1; |
55 |
|
|
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 |
123 |
} |
} |
124 |
} |
} |
125 |
|
|
126 |
|
# my $len = next_part( 'boob' ); |
127 |
|
# my ( $len, $part ) = next_part(); |
128 |
|
|
129 |
sub next_part { |
sub next_part { |
130 |
my ( $expected_part, $expected_len, $skip ) = @_; |
my ( $expected_part, $expected_len, $skip ) = @_; |
131 |
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 ) { |
135 |
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; |
136 |
} |
} |
137 |
printf "## next_part %s - %d 0x%x bytes\n", $part, $len, $len if $debug; |
printf "## next_part %s - %d 0x%x bytes\n", $part, $len, $len if $debug; |
138 |
x($len) if $skip; |
x($len) if $skip; |
139 |
|
return ( $len, $part ) if wantarray; |
140 |
return $len; |
return $len; |
141 |
} |
} |
142 |
|
|
163 |
return $out; |
return $out; |
164 |
} |
} |
165 |
|
|
|
sub mp3_frame { |
|
|
my $frame = join('', |
|
|
# Frame sync (all bits set) |
|
|
1 x 11 . |
|
|
# MPEG Audio version ID |
|
|
# 00 - MPEG Version 2.5 (unofficial) |
|
|
# 01 - reserved |
|
|
# 10 - MPEG Version 2 (ISO/IEC 13818-3) |
|
|
# 11 - MPEG Version 1 (ISO/IEC 11172-3) |
|
|
1,0, |
|
|
# Layer description |
|
|
# 00 - reserved |
|
|
# 01 - Layer III |
|
|
# 10 - Layer II |
|
|
# 11 - Layer I |
|
|
0,1, |
|
|
# Protection bit |
|
|
# 0 - Protected by CRC (16bit crc follows header) |
|
|
# 1 - Not protected |
|
|
0, |
|
|
# Bitrate index |
|
|
0,0,0,0, |
|
|
# Sampling rate frequency index (22050) |
|
|
0,0, |
|
|
# Padding bit |
|
|
# 0 - frame is not padded |
|
|
# 1 - frame is padded with one extra slot |
|
|
0, |
|
|
# Private bit |
|
|
0, |
|
|
# Channel Mode |
|
|
# 00 - Stereo |
|
|
# 01 - Joint stereo (Stereo) |
|
|
# 10 - Dual channel (2 mono channels) |
|
|
# 11 - Single channel (Mono) |
|
|
1,1, |
|
|
# Mode extension (Only if Joint stereo) |
|
|
0,0, |
|
|
# Copyright |
|
|
0, |
|
|
# Original |
|
|
0, |
|
|
# Emphasis |
|
|
# 00 - none |
|
|
# 01 - 50/15 ms |
|
|
# 10 - reserved |
|
|
# 11 - CCIT J.17 |
|
|
0,0, |
|
|
); |
|
|
|
|
|
die "frame must have 32 bits, not ", length($frame), " for $frame" if length($frame) != 32; |
|
|
|
|
|
my $bits = pack("b32", $frame); |
|
|
|
|
|
die "packed bits must be 4 bytes, not $bits" if length($bits) != 4; |
|
|
|
|
|
my $t = $frame; |
|
|
$t =~ s/(.{8})/$1 /g; |
|
|
warn "## mp3 frame frame = $t\n"; |
|
|
|
|
|
return $bits; |
|
|
} |
|
|
|
|
166 |
my @subframes; |
my @subframes; |
167 |
my $frame_nr = 1; |
my $frame_nr = 1; |
168 |
|
|
330 |
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; |
331 |
} |
} |
332 |
|
|
333 |
my ( $riff, $amv ) = x(12, 'Z4x4Z4'); |
# |
334 |
die "$path not RIFF but $riff" if $riff ne 'RIFF'; |
# IMA ADPCM decoder |
335 |
die "$path not AMV but $amv" if $amv ne 'AMV '; |
# |
336 |
|
|
337 |
|
my @index_adjust = ( -1, -1, -1, -1, 2, 4, 6, 8 ); |
338 |
|
|
339 |
|
my @step_size = ( |
340 |
|
7, 8, 9, 10, 11, 12, 13, 14, 16, 17, |
341 |
|
19, 21, 23, 25, 28, 31, 34, 37, 41, 45, |
342 |
|
50, 55, 60, 66, 73, 80, 88, 97, 107, 118, |
343 |
|
130, 143, 157, 173, 190, 209, 230, 253, 279, 307, |
344 |
|
337, 371, 408, 449, 494, 544, 598, 658, 724, 796, |
345 |
|
876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066, |
346 |
|
2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358, |
347 |
|
5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899, |
348 |
|
15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767 |
349 |
|
); |
350 |
|
|
351 |
my $apath = "$dump_dir/audio.wav"; |
my $pred_val = 0; |
352 |
open(my $audio_fh, '>', $apath) || die "can't open audio file $apath: $!"; |
my $step_idx = 0; |
353 |
|
|
354 |
print $audio_fh pack 'a4Va4a4VvvVVv4', ( |
# This code is "borrowed" from the ALSA library |
355 |
# header 'RIFF', size |
# http://www.alsa-project.org |
356 |
'RIFF',-1, |
|
357 |
# type: 'WAVE' |
sub adpcm_decode_sample { |
358 |
'WAVE', |
my $code = shift; |
359 |
'fmt ',0x14, |
|
360 |
# format: DVI (IMA) ADPCM Wave Type |
my $pred_diff; # Predicted difference to next sample |
361 |
0x11, |
my $step; # holds previous step_size value |
362 |
# channels |
|
363 |
1, |
# Separate sign and magnitude |
364 |
# samples/sec |
my $sign = $code & 0x8; |
365 |
|
$code &= 0x7; |
366 |
|
|
367 |
|
# Computes pred_diff = (code + 0.5) * step / 4, |
368 |
|
# but see comment in adpcm_coder. |
369 |
|
|
370 |
|
$step = $step_size[$step_idx] || die "no step_size[$step_idx]"; |
371 |
|
|
372 |
|
# Compute difference and new predicted value |
373 |
|
$pred_diff = $step >> 3; |
374 |
|
my $i = 0x4; |
375 |
|
while( $i ) { |
376 |
|
if ($code & $i) { |
377 |
|
$pred_diff += $step; |
378 |
|
} |
379 |
|
$i >>= 1; |
380 |
|
$step >>= 1; |
381 |
|
} |
382 |
|
$pred_val += $sign ? -$pred_diff : $pred_diff; |
383 |
|
|
384 |
|
# Clamp output value |
385 |
|
if ($pred_val > 32767) { |
386 |
|
$pred_val = 32767; |
387 |
|
} elsif ($pred_val < -32768) { |
388 |
|
$pred_val = -32768; |
389 |
|
} |
390 |
|
|
391 |
|
# Find new step_size index value |
392 |
|
$step_idx += $index_adjust[$code]; |
393 |
|
|
394 |
|
if ($step_idx < 0) { |
395 |
|
$step_idx = 0; |
396 |
|
} elsif ($step_idx > 88) { |
397 |
|
$step_idx = 88; |
398 |
|
} |
399 |
|
return $pred_val; |
400 |
|
} |
401 |
|
|
402 |
|
my $au_path = "$dump_dir/sound.au"; |
403 |
|
open(my $au_fh, '>', $au_path) || die "can't open $au_path: $!"; |
404 |
|
print $au_fh pack 'a4N5', ( |
405 |
|
# magic |
406 |
|
'.snd', |
407 |
|
# data offset |
408 |
|
24, |
409 |
|
# data size |
410 |
|
-1, |
411 |
|
# encoding - 16-bit linear PCM |
412 |
|
3, |
413 |
|
# sample rate |
414 |
22050, |
22050, |
415 |
# avg. bytes/sec (for esimation) |
#channels |
416 |
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, |
|
417 |
); |
); |
418 |
|
|
419 |
print $audio_fh pack 'a4VVa4V', ( |
sub audio_frame { |
420 |
# time length of the data in samples |
my $data = shift || die "no data?"; |
|
'fact',4, |
|
|
220500, |
|
|
# |
|
|
'data',-1, |
|
|
); |
|
421 |
|
|
422 |
my $riff_header_len = tell($audio_fh); |
my ( $origin, $index, $bytes ) = unpack 'ssL', substr($data,0,8); |
423 |
|
|
424 |
|
$pred_val = $origin; |
425 |
|
$step_idx = $index; |
426 |
|
|
427 |
|
my $size = 0; |
428 |
|
|
429 |
|
foreach my $b ( map { ord($_) } split(//, substr($data,8)) ) { |
430 |
|
print $au_fh pack 'n', adpcm_decode_sample( $b >> 4 ); |
431 |
|
print $au_fh pack 'n', adpcm_decode_sample( $b & 15 ); |
432 |
|
$size += 2; |
433 |
|
} |
434 |
|
|
435 |
|
warn "length isn't corrent $bytes != $size" if $bytes != $size; |
436 |
|
} |
437 |
|
|
438 |
|
# |
439 |
|
# read AMV file |
440 |
|
# |
441 |
|
|
442 |
|
my ( $riff, $amv ) = x(12, 'Z4x4Z4'); |
443 |
|
die "$path not RIFF but $riff" if $riff ne 'RIFF'; |
444 |
|
die "$path not AMV but $amv" if $amv ne 'AMV '; |
445 |
|
|
446 |
|
my $fps = 16; |
447 |
|
my $duration; |
448 |
|
|
449 |
while ( ! defined($d->{eof}) ) { |
while ( ! defined($d->{eof}) ) { |
450 |
my ( $list, $name ) = x(12,'A4x4A4'); |
my ( $list, $name ) = x(12,'A4x4A4'); |
463 |
$h->{$n} = $v; |
$h->{$n} = $v; |
464 |
} x($len, 'Vx28VVVx8CCv'); |
} x($len, 'Vx28VVVx8CCv'); |
465 |
|
|
466 |
printf "## %s %d*%d %s fps (%d ms/frame) %02d:%02d:%02d\n", |
$duration = sprintf('%02d:%02d:%02d', $h->{hh}, $h->{mm}, $h->{ss} ); |
467 |
|
|
468 |
|
printf "## %s %d*%d %s fps (%d ms/frame) %s\n", |
469 |
$path, |
$path, |
470 |
$h->{width}, $h->{height}, $h->{fps}, $h->{ms_per_frame}, |
$h->{width}, $h->{height}, $h->{fps}, $h->{ms_per_frame}, |
471 |
$h->{hh}, $h->{mm}, $h->{ss}; |
$duration; |
472 |
|
|
473 |
$d->{amvh} = $h; |
$d->{amvh} = $h; |
474 |
|
$fps = $h->{fps}; |
475 |
|
|
476 |
} elsif ( $name eq 'strl' ) { |
} elsif ( $name eq 'strl' ) { |
477 |
|
|
480 |
|
|
481 |
} elsif ( $name eq 'movi' ) { |
} elsif ( $name eq 'movi' ) { |
482 |
|
|
483 |
while (1) { |
my $have_parts = 1; |
484 |
|
|
485 |
|
while ( $have_parts ) { |
486 |
my $frame = $d->{movi}++; |
my $frame = $d->{movi}++; |
|
|
|
|
my $len = next_part( '00dc' ); |
|
|
last unless $len; |
|
|
printf "<< %s 00dc - part %d jpeg %d 0x%x bytes\n", $name, $frame, $len, $len if $verbose; |
|
|
mkjpg( x($len) ); |
|
|
|
|
|
$len = next_part( '01wb' ); |
|
|
printf "<< %s 01wb - part %d audio %d 0x%x bytes\n", $name, $frame, $len, $len if $verbose; |
|
|
|
|
|
my $audio_frame = x( $len ); |
|
|
|
|
|
if ( $dump_audio ) { |
|
|
printf "#### dumping audio frame %d 0x%x bytes\n", length($audio_frame), length($audio_frame); |
|
|
hex_dump( $audio_frame ); |
|
|
} |
|
487 |
|
|
488 |
# remove 8 bytes of something |
my $parts = 0; |
|
$audio_frame = substr( $audio_frame, 8 ); |
|
489 |
|
|
490 |
if ( length($audio_frame) % 2 == 0 ) { |
while ( $parts < 2 ) { |
|
print "#### even sized frame!"; |
|
|
# $audio_frame = substr( $audio_frame, 0, -1 ); |
|
|
} |
|
491 |
|
|
492 |
# print $audio_fh mp3_frame; |
my ( $len, $part ) = next_part(); |
493 |
print $audio_fh $audio_frame || die "can't write audio frame in $apath: $!"; |
|
494 |
|
if ( ! $len ) { |
495 |
|
$have_parts = 0; |
496 |
|
last; |
497 |
|
} |
498 |
|
|
499 |
|
if ( $part eq '00dc' ) { |
500 |
|
|
501 |
|
printf "<< %s 00dc - part %d jpeg %d 0x%x bytes\n", $name, $frame, $len, $len if $verbose; |
502 |
|
mkjpg( x($len) ); |
503 |
|
$parts++; |
504 |
|
|
505 |
|
} elsif ( $part eq '01wb' ) { |
506 |
|
printf "<< %s 01wb - part %d audio %d 0x%x bytes\n", $name, $frame, $len, $len if $verbose; |
507 |
|
|
508 |
|
my $audio_frame = x( $len ); |
509 |
|
|
510 |
|
if ( $dump_audio ) { |
511 |
|
printf "#### dumping audio frame %d 0x%x bytes\n", length($audio_frame), length($audio_frame); |
512 |
|
hex_dump( $audio_frame ); |
513 |
|
} |
514 |
|
|
515 |
|
# print $audio_fh mp3_frame; |
516 |
|
audio_frame( $audio_frame ); |
517 |
|
|
518 |
|
$parts++; |
519 |
|
} else { |
520 |
|
warn "unknown next part $part with $len bytes, skipping!"; |
521 |
|
} |
522 |
|
|
523 |
|
warn "## #$frame_nr $name $part has $parts parts\n" if $debug; |
524 |
|
} |
525 |
|
|
526 |
$frame_nr++; |
$frame_nr++; |
527 |
|
|
528 |
|
if ( $frame_nr % $fps == 0 ) { |
529 |
|
print "\n" if ( ( $frame_nr / $fps ) % 60 == 0 ); |
530 |
|
print "."; |
531 |
|
} |
532 |
}; |
}; |
533 |
|
|
534 |
} else { |
} else { |
536 |
} |
} |
537 |
} |
} |
538 |
|
|
539 |
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 $dump_avi"; |
540 |
system($cmd) == 0 || die "can't convert frames to avi using $cmd: $!"; |
system($cmd) == 0 || die "can't convert frames to avi using $cmd: $!"; |
541 |
|
|
542 |
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"; |
|