9 |
# http://en.wikipedia.org/wiki/RIFF_(File_format) |
# http://en.wikipedia.org/wiki/RIFF_(File_format) |
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 |
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 |
|
my $dump_video = 0; |
24 |
|
my $dump_jpeg = 0; |
25 |
|
my $dump_audio = 0; |
26 |
my $debug = 0; |
my $debug = 0; |
27 |
|
my $verbose = 0; |
28 |
my $dump_dir = '/tmp/dump/'; |
my $dump_dir = '/tmp/dump/'; |
29 |
my $dump_avi = "dump.avi"; |
my $dump_avi = "dump.avi"; |
30 |
my $no_jpeg_header = 0; |
my $no_jpeg_header = 0; |
31 |
my $jpeg_q = 100; |
my $jpeg_q = 100; |
32 |
my $jpegtran = '-flip vertical'; |
my $jpegtran; |
33 |
|
|
34 |
GetOptions( |
GetOptions( |
35 |
"dump!" => \$dump, |
"dump-amv!" => \$dump_amv, |
36 |
|
"dump-video!" => \$dump_video, |
37 |
|
"dump-jpeg!" => \$dump_jpeg, |
38 |
|
"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, |
42 |
"jpegtran=s" => \$jpegtran |
"jpegtran=s" => \$jpegtran, |
43 |
|
"verbose!" => \$verbose, |
44 |
); |
); |
45 |
|
|
46 |
my $path = shift @ARGV || die "usage: $0 movie.amv\n"; |
my $path = shift @ARGV || die "usage: $0 movie.amv\n"; |
47 |
|
|
48 |
|
# by default, flip frames |
49 |
|
#$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: $!"; |
60 |
my $d; |
my $d; |
61 |
|
|
62 |
sub hex_dump { |
sub hex_dump { |
|
return unless $dump; |
|
|
|
|
63 |
my ( $bytes, $offset ) = @_; |
my ( $bytes, $offset ) = @_; |
64 |
return unless $bytes; |
return unless $bytes; |
65 |
|
|
101 |
my $r_len = length($bytes); |
my $r_len = length($bytes); |
102 |
confess "read $r_len bytes, expected $len" if $len != $r_len; |
confess "read $r_len bytes, expected $len" if $len != $r_len; |
103 |
|
|
104 |
hex_dump( $bytes ); |
if ( $dump_amv ) { |
105 |
|
print "## raw $len bytes\n"; |
106 |
|
hex_dump( $bytes ); |
107 |
|
} |
108 |
|
|
109 |
if ( $bytes eq 'AMV_END_' ) { |
if ( $bytes eq 'AMV_END_' ) { |
110 |
print "> end of file marker AMV_END_\n" if $dump; |
print "> end of file marker AMV_END_\n" if $dump_video; |
111 |
$d->{eof}++; |
$d->{eof}++; |
112 |
return; |
return; |
113 |
} |
} |
129 |
if ( $expected_len ) { |
if ( $expected_len ) { |
130 |
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; |
131 |
} |
} |
132 |
printf "<< %s - %d 0x%x bytes\n", $part, $len, $len; |
printf "## next_part %s - %d 0x%x bytes\n", $part, $len, $len if $debug; |
133 |
x($len) if $skip; |
x($len) if $skip; |
134 |
return $len; |
return $len; |
135 |
} |
} |
147 |
$out .= chr($t); |
$out .= chr($t); |
148 |
} |
} |
149 |
|
|
150 |
if ( $dump ) { |
if ( $dump_video ) { |
151 |
print "## quantization table original\n"; |
print "## quantization table original\n"; |
152 |
hex_dump( $in ); |
hex_dump( $in ); |
153 |
print "## quantization table for $jpeg_q %\n"; |
print "## quantization table for $jpeg_q %\n"; |
157 |
return $out; |
return $out; |
158 |
} |
} |
159 |
|
|
160 |
|
sub mp3_frame { |
161 |
|
my $frame = join('', |
162 |
|
# Frame sync (all bits set) |
163 |
|
1 x 11 . |
164 |
|
# MPEG Audio version ID |
165 |
|
# 00 - MPEG Version 2.5 (unofficial) |
166 |
|
# 01 - reserved |
167 |
|
# 10 - MPEG Version 2 (ISO/IEC 13818-3) |
168 |
|
# 11 - MPEG Version 1 (ISO/IEC 11172-3) |
169 |
|
1,0, |
170 |
|
# Layer description |
171 |
|
# 00 - reserved |
172 |
|
# 01 - Layer III |
173 |
|
# 10 - Layer II |
174 |
|
# 11 - Layer I |
175 |
|
0,1, |
176 |
|
# Protection bit |
177 |
|
# 0 - Protected by CRC (16bit crc follows header) |
178 |
|
# 1 - Not protected |
179 |
|
0, |
180 |
|
# Bitrate index |
181 |
|
0,0,0,0, |
182 |
|
# Sampling rate frequency index (22050) |
183 |
|
0,0, |
184 |
|
# Padding bit |
185 |
|
# 0 - frame is not padded |
186 |
|
# 1 - frame is padded with one extra slot |
187 |
|
0, |
188 |
|
# Private bit |
189 |
|
0, |
190 |
|
# Channel Mode |
191 |
|
# 00 - Stereo |
192 |
|
# 01 - Joint stereo (Stereo) |
193 |
|
# 10 - Dual channel (2 mono channels) |
194 |
|
# 11 - Single channel (Mono) |
195 |
|
1,1, |
196 |
|
# Mode extension (Only if Joint stereo) |
197 |
|
0,0, |
198 |
|
# Copyright |
199 |
|
0, |
200 |
|
# Original |
201 |
|
0, |
202 |
|
# Emphasis |
203 |
|
# 00 - none |
204 |
|
# 01 - 50/15 ms |
205 |
|
# 10 - reserved |
206 |
|
# 11 - CCIT J.17 |
207 |
|
0,0, |
208 |
|
); |
209 |
|
|
210 |
|
die "frame must have 32 bits, not ", length($frame), " for $frame" if length($frame) != 32; |
211 |
|
|
212 |
|
my $bits = pack("b32", $frame); |
213 |
|
|
214 |
|
die "packed bits must be 4 bytes, not $bits" if length($bits) != 4; |
215 |
|
|
216 |
|
my $t = $frame; |
217 |
|
$t =~ s/(.{8})/$1 /g; |
218 |
|
warn "## mp3 frame frame = $t\n"; |
219 |
|
|
220 |
|
return $bits; |
221 |
|
} |
222 |
|
|
223 |
my @subframes; |
my @subframes; |
224 |
my $frame_nr = 1; |
my $frame_nr = 1; |
225 |
|
|
235 |
|
|
236 |
if ( $#subframes < ( $join_subframes - 1 ) ) { |
if ( $#subframes < ( $join_subframes - 1 ) ) { |
237 |
push @subframes, $data; |
push @subframes, $data; |
238 |
print "## saved $frame_nr/", $#subframes + 1, " subframe of ", length($data), " bytes\n"; |
print "## saved $frame_nr/", $#subframes + 1, " subframe of ", length($data), " bytes\n" if $debug; |
239 |
return; |
return; |
240 |
} |
} |
241 |
|
|
361 |
0, # Ah, Ai (not used) |
0, # Ah, Ai (not used) |
362 |
); |
); |
363 |
|
|
364 |
if ( $dump ) { |
if ( $dump_jpeg ) { |
365 |
print "## created JPEG header...\n"; |
print "## created JPEG header...\n"; |
366 |
hex_dump( $header, 0 ); |
hex_dump( $header, 0 ); |
367 |
} |
} |
369 |
my $frame = join('', @subframes ) . $data; |
my $frame = join('', @subframes ) . $data; |
370 |
@subframes = (); |
@subframes = (); |
371 |
|
|
372 |
my $path = sprintf("$dump_dir/%04d.jpg", $frame_nr++ ); |
my $path = sprintf("$dump_dir/%04d.jpg", $frame_nr ); |
373 |
|
|
374 |
my $fh; |
my $fh; |
375 |
if ( $jpegtran ) { |
if ( $jpegtran ) { |
384 |
print $fh $frame || die "can't write raw jpeg $path: $!"; |
print $fh $frame || die "can't write raw jpeg $path: $!"; |
385 |
} |
} |
386 |
close $fh || die "can't close $path: $!"; |
close $fh || die "can't close $path: $!"; |
387 |
print ">> created $frame_nr ", $no_jpeg_header ? 'raw' : '', " jpeg $path ", -s $path, " bytes\n"; |
print ">> created $frame_nr ", $no_jpeg_header ? 'raw' : '', " jpeg $path ", -s $path, " bytes\n" if $verbose; |
388 |
} |
} |
389 |
|
|
390 |
|
# |
391 |
|
# IMA ADPCM decoder |
392 |
|
# |
393 |
|
|
394 |
|
my @index_adjust = ( -1, -1, -1, -1, 2, 4, 6, 8 ); |
395 |
|
|
396 |
|
my @step_size = ( |
397 |
|
7, 8, 9, 10, 11, 12, 13, 14, 16, 17, |
398 |
|
19, 21, 23, 25, 28, 31, 34, 37, 41, 45, |
399 |
|
50, 55, 60, 66, 73, 80, 88, 97, 107, 118, |
400 |
|
130, 143, 157, 173, 190, 209, 230, 253, 279, 307, |
401 |
|
337, 371, 408, 449, 494, 544, 598, 658, 724, 796, |
402 |
|
876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066, |
403 |
|
2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358, |
404 |
|
5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899, |
405 |
|
15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767 |
406 |
|
); |
407 |
|
|
408 |
|
my $pred_val = 0; |
409 |
|
my $step_idx = 0; |
410 |
|
|
411 |
|
# This code is "borrowed" from the ALSA library |
412 |
|
# http://www.alsa-project.org |
413 |
|
|
414 |
|
sub adpcm_decode_sample { |
415 |
|
my $code = shift; |
416 |
|
|
417 |
|
my $pred_diff; # Predicted difference to next sample |
418 |
|
my $step; # holds previous step_size value |
419 |
|
|
420 |
|
# Separate sign and magnitude |
421 |
|
my $sign = $code & 0x8; |
422 |
|
$code &= 0x7; |
423 |
|
|
424 |
|
# Computes pred_diff = (code + 0.5) * step / 4, |
425 |
|
# but see comment in adpcm_coder. |
426 |
|
|
427 |
|
$step = $step_size[$step_idx] || die "no step_size[$step_idx]"; |
428 |
|
|
429 |
|
# Compute difference and new predicted value |
430 |
|
$pred_diff = $step >> 3; |
431 |
|
my $i = 0x4; |
432 |
|
while( $i ) { |
433 |
|
if ($code & $i) { |
434 |
|
$pred_diff += $step; |
435 |
|
} |
436 |
|
$i >>= 1; |
437 |
|
$step >>= 1; |
438 |
|
} |
439 |
|
$pred_val += $sign ? -$pred_diff : $pred_diff; |
440 |
|
|
441 |
|
# Clamp output value |
442 |
|
if ($pred_val > 32767) { |
443 |
|
$pred_val = 32767; |
444 |
|
} elsif ($pred_val < -32768) { |
445 |
|
$pred_val = -32768; |
446 |
|
} |
447 |
|
|
448 |
|
# Find new step_size index value |
449 |
|
$step_idx += $index_adjust[$code]; |
450 |
|
|
451 |
|
if ($step_idx < 0) { |
452 |
|
$step_idx = 0; |
453 |
|
} elsif ($step_idx > 88) { |
454 |
|
$step_idx = 88; |
455 |
|
} |
456 |
|
return $pred_val; |
457 |
|
} |
458 |
|
|
459 |
|
open(my $au_fh, '>', 'out.au') || die "can't open out.au: $!"; |
460 |
|
print $au_fh pack 'a4N5', ( |
461 |
|
# magic |
462 |
|
'.snd', |
463 |
|
# data offset |
464 |
|
24, |
465 |
|
# data size |
466 |
|
-1, |
467 |
|
# encoding - 16-bit linear PCM |
468 |
|
3, |
469 |
|
# sample rate |
470 |
|
22050, |
471 |
|
#channels |
472 |
|
1, |
473 |
|
); |
474 |
|
|
475 |
|
sub audio_frame { |
476 |
|
my $data = shift || die "no data?"; |
477 |
|
|
478 |
|
my ( $origin, $index, $bytes ) = unpack 'ssL', substr($data,0,8); |
479 |
|
|
480 |
|
warn "audio_frame origin $origin index $index bytes $bytes\n"; |
481 |
|
hex_dump( substr($data,0,8) ); |
482 |
|
|
483 |
|
$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'); |
my ( $riff, $amv ) = x(12, 'Z4x4Z4'); |
552 |
die "$path not RIFF but $riff" if $riff ne 'RIFF'; |
die "$path not RIFF but $riff" if $riff ne 'RIFF'; |
553 |
die "$path not AMV but $amv" if $amv ne 'AMV '; |
die "$path not AMV but $amv" if $amv ne 'AMV '; |
555 |
while ( ! defined($d->{eof}) ) { |
while ( ! defined($d->{eof}) ) { |
556 |
my ( $list, $name ) = x(12,'A4x4A4'); |
my ( $list, $name ) = x(12,'A4x4A4'); |
557 |
die "not LIST but $list" if $list ne 'LIST'; |
die "not LIST but $list" if $list ne 'LIST'; |
558 |
print "< $list * $name\n"; |
print "< $list * $name\n" if $verbose; |
559 |
|
|
560 |
if ( $name eq 'hdrl' ) { |
if ( $name eq 'hdrl' ) { |
561 |
|
|
588 |
|
|
589 |
my $len = next_part( '00dc' ); |
my $len = next_part( '00dc' ); |
590 |
last unless $len; |
last unless $len; |
591 |
printf "<< %s 00dc - frame %d jpeg %d 0x%x bytes\n", $name, $frame, $len, $len; |
printf "<< %s 00dc - part %d jpeg %d 0x%x bytes\n", $name, $frame, $len, $len if $verbose; |
592 |
mkjpg( x($len) ); |
mkjpg( x($len) ); |
593 |
|
|
594 |
$len = next_part( '01wb', 0, 1 ); |
$len = next_part( '01wb' ); |
595 |
printf "<< %s 01wb - frame %d audio %d 0x%x bytes\n", $name, $frame, $len, $len; |
printf "<< %s 01wb - part %d audio %d 0x%x bytes\n", $name, $frame, $len, $len if $verbose; |
596 |
|
|
597 |
|
my $audio_frame = x( $len ); |
598 |
|
|
599 |
|
if ( $dump_audio ) { |
600 |
|
printf "#### dumping audio frame %d 0x%x bytes\n", length($audio_frame), length($audio_frame); |
601 |
|
hex_dump( $audio_frame ); |
602 |
|
} |
603 |
|
|
604 |
|
# remove 8 bytes of something |
605 |
|
# $audio_frame = substr( $audio_frame, 8 ); |
606 |
|
|
607 |
|
if ( length($audio_frame) % 2 == 0 ) { |
608 |
|
print "#### even sized frame!"; |
609 |
|
# $audio_frame = substr( $audio_frame, 0, -1 ); |
610 |
|
} |
611 |
|
|
612 |
|
# print $audio_fh mp3_frame; |
613 |
|
audio_frame( $audio_frame ); |
614 |
|
|
615 |
|
$frame_nr++; |
616 |
}; |
}; |
617 |
|
|
618 |
} else { |
} else { |
623 |
my $cmd = "ffmpeg -i $dump_dir/%04d.jpg -r 16 -y $dump_avi"; |
my $cmd = "ffmpeg -i $dump_dir/%04d.jpg -r 16 -y $dump_avi"; |
624 |
system($cmd) == 0 || die "can't convert frames to avi using $cmd: $!"; |
system($cmd) == 0 || die "can't convert frames to avi using $cmd: $!"; |
625 |
|
|
626 |
|
print ">>>> created $frame_nr frames $dump_avi ", -s $dump_avi, "\n"; |