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 |
|
|
435 |
warn "length isn't corrent $bytes != $size" if $bytes != $size; |
warn "length isn't corrent $bytes != $size" if $bytes != $size; |
436 |
} |
} |
437 |
|
|
|
|
|
|
sub x_audio_frame { |
|
|
my $data = shift || die "no data?"; |
|
|
|
|
|
my $apath = sprintf("$dump_dir/%04d.wav", $frame_nr ); |
|
|
open(my $audio_fh, '>', $apath) || die "can't open audio file $apath: $!"; |
|
|
|
|
|
print $audio_fh pack 'a4Va4a4VvvVVv4', ( |
|
|
# header 'RIFF', size |
|
|
'RIFF',-1, |
|
|
# type: 'WAVE' |
|
|
'WAVE', |
|
|
'fmt ',0x14, |
|
|
# format: DVI (IMA) ADPCM Wave Type |
|
|
0x11, |
|
|
# channels |
|
|
1, |
|
|
# samples/sec |
|
|
22050, |
|
|
# avg. bytes/sec (for esimation) |
|
|
11567, |
|
|
# 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 |
|
|
0x03f9, |
|
|
); |
|
|
|
|
|
print $audio_fh pack 'a4VVa4V', ( |
|
|
# time length of the data in samples |
|
|
'fact',4, |
|
|
220500, |
|
|
# |
|
|
'data',-1, |
|
|
); |
|
|
|
|
|
my $riff_header_len = tell($audio_fh); |
|
|
|
|
|
print $audio_fh $data; |
|
|
|
|
|
my $size = tell($audio_fh); |
|
|
warn "## wav file $apath 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: $!"; |
|
|
} |
|
|
|
|
438 |
# |
# |
439 |
# read AMV file |
# read AMV file |
440 |
# |
# |
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 |
# print $audio_fh mp3_frame; |
my $parts = 0; |
489 |
audio_frame( $audio_frame ); |
|
490 |
|
while ( $parts < 2 ) { |
491 |
|
|
492 |
|
my ( $len, $part ) = next_part(); |
493 |
|
|
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 |
|
|
536 |
} |
} |
537 |
} |
} |
538 |
|
|
539 |
|
if ( $fps == 12 ) { |
540 |
|
warn "fixup $au_path for $fps fps -- 16000 Hz\n"; |
541 |
|
seek($au_fh, 16, 0); # sample rate offset |
542 |
|
print $au_fh pack 'N', 16000; |
543 |
|
} |
544 |
|
|
545 |
my $cmd = "ffmpeg -r $fps -i $dump_dir/%04d.jpg -i $au_path -y $dump_avi"; |
my $cmd = "ffmpeg -r $fps -i $dump_dir/%04d.jpg -i $au_path -y $dump_avi"; |
546 |
system($cmd) == 0 || die "can't convert frames to avi using $cmd: $!"; |
system($cmd) == 0 || die "can't convert frames to avi using $cmd: $!"; |
547 |
|
|