163 |
return $out; |
return $out; |
164 |
} |
} |
165 |
|
|
|
=for obsolete |
|
|
|
|
|
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; |
|
|
} |
|
|
|
|
|
=cut |
|
|
|
|
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 |
# |
# |
520 |
warn "unknown next part $part with $len bytes, skipping!"; |
warn "unknown next part $part with $len bytes, skipping!"; |
521 |
} |
} |
522 |
|
|
523 |
warn "## #$frame_nr $name $part has $parts parts\n"; |
warn "## #$frame_nr $name $part has $parts parts\n" if $debug; |
524 |
} |
} |
525 |
|
|
526 |
$frame_nr++; |
$frame_nr++; |