Documentation/dvb/get_dvb_firmware

   1 #!/usr/bin/perl
   2 #     DVB firmware extractor
   3 #
   4 #     (c) 2004 Andrew de Quincey
   5 #
   6 #     This program is free software; you can redistribute it and/or modify
   7 #       it under the terms of the GNU General Public License as published by
   8 #       the Free Software Foundation; either version 2 of the License, or
   9 #       (at your option) any later version.
  10 #
  11 #     This program is distributed in the hope that it will be useful,
  12 #       but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 #       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 #
  15 #     GNU General Public License for more details.
  16 #
  17 #     You should have received a copy of the GNU General Public License
  18 #       along with this program; if not, write to the Free Software
  19 #       Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21 use File::Temp qw/ tempdir /;
  22 use IO::Handle;
  23
  24 @components = ( "sp8870", "sp887x", "tda10045", "tda10046",
  25                 "tda10046lifeview", "av7110", "dec2000t", "dec2540t",
  26                 "dec3000s", "vp7041", "dibusb", "nxt2002", "nxt2004",
  27                 "or51211", "or51132_qam", "or51132_vsb", "bluebird",
  28                 "opera1", "cx231xx", "cx18", "cx23885", "pvrusb2", "mpc718" );
  29
  30 # Check args
  31 syntax() if (scalar(@ARGV) != 1);
  32 $cid = $ARGV[0];
  33
  34 # Do it!
  35 for ($i=0; $i < scalar(@components); $i++) {
  36     if ($cid eq $components[$i]) {
  37         $outfile = eval($cid);
  38         die $@ if $@;
  39         print STDERR <<EOF;
  40 Firmware(s) $outfile extracted successfully.
  41 Now copy it(they) to either /usr/lib/hotplug/firmware or /lib/firmware
  42 (depending on configuration of firmware hotplug).
  43 EOF
  44         exit(0);
  45     }
  46 }
  47
  48 # If we get here, it wasn't found
  49 print STDERR "Unknown component \"$cid\"\n";
  50 syntax();
  51
  52
  53
  54
  55 # ---------------------------------------------------------------
  56 # Firmware-specific extraction subroutines
  57
  58 sub sp8870 {
  59     my $sourcefile = "tt_Premium_217g.zip";
  60     my $url = "http://www.softwarepatch.pl/9999ccd06a4813cb827dbb0005071c71/$sourcefile";
  61     my $hash = "53970ec17a538945a6d8cb608a7b3899";
  62     my $outfile = "dvb-fe-sp8870.fw";
  63     my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  64
  65     checkstandard();
  66
  67     wgetfile($sourcefile, $url);
  68     unzip($sourcefile, $tmpdir);
  69     verify("$tmpdir/software/OEM/HE/App/boot/SC_MAIN.MC", $hash);
  70     copy("$tmpdir/software/OEM/HE/App/boot/SC_MAIN.MC", $outfile);
  71
  72     $outfile;
  73 }
  74
  75 sub sp887x {
  76     my $sourcefile = "Dvbt1.3.57.6.zip";
  77     my $url = "http://www.avermedia.com/software/$sourcefile";
  78     my $cabfile = "DVBT Net  Ver1.3.57.6/disk1/data1.cab";
  79     my $hash = "237938d53a7f834c05c42b894ca68ac3";
  80     my $outfile = "dvb-fe-sp887x.fw";
  81     my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
  82
  83     checkstandard();
  84     checkunshield();
  85
  86     wgetfile($sourcefile, $url);
  87     unzip($sourcefile, $tmpdir);
  88     unshield("$tmpdir/$cabfile", $tmpdir);
  89     verify("$tmpdir/ZEnglish/sc_main.mc", $hash);
  90     copy("$tmpdir/ZEnglish/sc_main.mc", $outfile);
  91
  92     $outfile;
  93 }
  94
  95 sub tda10045 {
  96     my $sourcefile = "tt_budget_217g.zip";
  97     my $url = "http://www.technotrend.de/new/217g/$sourcefile";
  98     my $hash = "2105fd5bf37842fbcdfa4bfd58f3594a";
  99     my $outfile = "dvb-fe-tda10045.fw";
 100     my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
 101
 102     checkstandard();
 103
 104     wgetfile($sourcefile, $url);
 105     unzip($sourcefile, $tmpdir);
 106     extract("$tmpdir/software/OEM/PCI/App/ttlcdacc.dll", 0x37ef9, 30555, "$tmpdir/fwtmp");
 107     verify("$tmpdir/fwtmp", $hash);
 108     copy("$tmpdir/fwtmp", $outfile);
 109
 110     $outfile;
 111 }
 112
 113 sub tda10046 {
 114         my $sourcefile = "TT_PCI_2.19h_28_11_2006.zip";
 115         my $url = "http://www.tt-download.com/download/updates/219/$sourcefile";
 116         my $hash = "6a7e1e2f2644b162ff0502367553c72d";
 117         my $outfile = "dvb-fe-tda10046.fw";
 118         my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
 119
 120         checkstandard();
 121
 122         wgetfile($sourcefile, $url);
 123         unzip($sourcefile, $tmpdir);
 124         extract("$tmpdir/TT_PCI_2.19h_28_11_2006/software/OEM/PCI/App/ttlcdacc.dll", 0x65389, 24478, "$tmpdir/fwtmp");
 125         verify("$tmpdir/fwtmp", $hash);
 126         copy("$tmpdir/fwtmp", $outfile);
 127
 128         $outfile;
 129 }
 130
 131 sub tda10046lifeview {
 132     my $sourcefile = "7%5Cdrv_2.11.02.zip";
 133     my $url = "http://www.lifeview.hk/dbimages/document/$sourcefile";
 134     my $hash = "1ea24dee4eea8fe971686981f34fd2e0";
 135     my $outfile = "dvb-fe-tda10046.fw";
 136     my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
 137
 138     checkstandard();
 139
 140     wgetfile($sourcefile, $url);
 141     unzip($sourcefile, $tmpdir);
 142     extract("$tmpdir/LVHybrid.sys", 0x8b088, 24602, "$tmpdir/fwtmp");
 143     verify("$tmpdir/fwtmp", $hash);
 144     copy("$tmpdir/fwtmp", $outfile);
 145
 146     $outfile;
 147 }
 148
 149 sub av7110 {
 150     my $sourcefile = "dvb-ttpci-01.fw-261d";
 151     my $url = "http://www.linuxtv.org/downloads/firmware/$sourcefile";
 152     my $hash = "603431b6259715a8e88f376a53b64e2f";
 153     my $outfile = "dvb-ttpci-01.fw";
 154
 155     checkstandard();
 156
 157     wgetfile($sourcefile, $url);
 158     verify($sourcefile, $hash);
 159     copy($sourcefile, $outfile);
 160
 161     $outfile;
 162 }
 163
 164 sub dec2000t {
 165     my $sourcefile = "dec217g.exe";
 166     my $url = "http://hauppauge.lightpath.net/de/$sourcefile";
 167     my $hash = "bd86f458cee4a8f0a8ce2d20c66215a9";
 168     my $outfile = "dvb-ttusb-dec-2000t.fw";
 169     my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
 170
 171     checkstandard();
 172
 173     wgetfile($sourcefile, $url);
 174     unzip($sourcefile, $tmpdir);
 175     verify("$tmpdir/software/OEM/STB/App/Boot/STB_PC_T.bin", $hash);
 176     copy("$tmpdir/software/OEM/STB/App/Boot/STB_PC_T.bin", $outfile);
 177
 178     $outfile;
 179 }
 180
 181 sub dec2540t {
 182     my $sourcefile = "dec217g.exe";
 183     my $url = "http://hauppauge.lightpath.net/de/$sourcefile";
 184     my $hash = "53e58f4f5b5c2930beee74a7681fed92";
 185     my $outfile = "dvb-ttusb-dec-2540t.fw";
 186     my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
 187
 188     checkstandard();
 189
 190     wgetfile($sourcefile, $url);
 191     unzip($sourcefile, $tmpdir);
 192     verify("$tmpdir/software/OEM/STB/App/Boot/STB_PC_X.bin", $hash);
 193     copy("$tmpdir/software/OEM/STB/App/Boot/STB_PC_X.bin", $outfile);
 194
 195     $outfile;
 196 }
 197
 198 sub dec3000s {
 199     my $sourcefile = "dec217g.exe";
 200     my $url = "http://hauppauge.lightpath.net/de/$sourcefile";
 201     my $hash = "b013ececea83f4d6d8d2a29ac7c1b448";
 202     my $outfile = "dvb-ttusb-dec-3000s.fw";
 203     my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
 204
 205     checkstandard();
 206
 207     wgetfile($sourcefile, $url);
 208     unzip($sourcefile, $tmpdir);
 209     verify("$tmpdir/software/OEM/STB/App/Boot/STB_PC_S.bin", $hash);
 210     copy("$tmpdir/software/OEM/STB/App/Boot/STB_PC_S.bin", $outfile);
 211
 212     $outfile;
 213 }
 214 sub opera1{
 215         my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 0);
 216
 217         checkstandard();
 218         my $fwfile1="dvb-usb-opera1-fpga-01.fw";
 219         my $fwfile2="dvb-usb-opera-01.fw";
 220         extract("2830SCap2.sys", 0x62e8, 55024, "$tmpdir/opera1-fpga.fw");
 221         extract("2830SLoad2.sys",0x3178,0x3685-0x3178,"$tmpdir/fw1part1");
 222         extract("2830SLoad2.sys",0x0980,0x3150-0x0980,"$tmpdir/fw1part2");
 223         delzero("$tmpdir/fw1part1","$tmpdir/fw1part1-1");
 224         delzero("$tmpdir/fw1part2","$tmpdir/fw1part2-1");
 225         verify("$tmpdir/fw1part1-1","5e0909858fdf0b5b09ad48b9fe622e70");
 226         verify("$tmpdir/fw1part2-1","d6e146f321427e931df2c6fcadac37a1");
 227         verify("$tmpdir/opera1-fpga.fw","0f8133f5e9051f5f3c1928f7e5a1b07d");
 228
 229         my $RES1="\x01\x92\x7f\x00\x01\x00";
 230         my $RES0="\x01\x92\x7f\x00\x00\x00";
 231         my $DAT1="\x01\x00\xe6\x00\x01\x00";
 232         my $DAT0="\x01\x00\xe6\x00\x00\x00";
 233         open FW,">$tmpdir/opera.fw";
 234         print FW "$RES1";
 235         print FW "$DAT1";
 236         print FW "$RES1";
 237         print FW "$DAT1";
 238         appendfile(FW,"$tmpdir/fw1part1-1");
 239         print FW "$RES0";
 240         print FW "$DAT0";
 241         print FW "$RES1";
 242         print FW "$DAT1";
 243         appendfile(FW,"$tmpdir/fw1part2-1");
 244         print FW "$RES1";
 245         print FW "$DAT1";
 246         print FW "$RES0";
 247         print FW "$DAT0";
 248         copy ("$tmpdir/opera1-fpga.fw",$fwfile1);
 249         copy ("$tmpdir/opera.fw",$fwfile2);
 250
 251         $fwfile1.",".$fwfile2;
 252 }
 253
 254 sub vp7041 {
 255     my $sourcefile = "2.422.zip";
 256     my $url = "http://www.twinhan.com/files/driver/USB-Ter/$sourcefile";
 257     my $hash = "e88c9372d1f66609a3e7b072c53fbcfe";
 258     my $outfile = "dvb-vp7041-2.422.fw";
 259     my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
 260
 261     checkstandard();
 262
 263     wgetfile($sourcefile, $url);
 264     unzip($sourcefile, $tmpdir);
 265     extract("$tmpdir/VisionDTV/Drivers/Win2K&XP/UDTTload.sys", 12503, 3036, "$tmpdir/fwtmp1");
 266     extract("$tmpdir/VisionDTV/Drivers/Win2K&XP/UDTTload.sys", 2207, 10274, "$tmpdir/fwtmp2");
 267
 268     my $CMD = "\000\001\000\222\177\000";
 269     my $PAD = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000";
 270     my ($FW);
 271     open $FW, ">$tmpdir/fwtmp3";
 272     print $FW "$CMD\001$PAD";
 273     print $FW "$CMD\001$PAD";
 274     appendfile($FW, "$tmpdir/fwtmp1");
 275     print $FW "$CMD\000$PAD";
 276     print $FW "$CMD\001$PAD";
 277     appendfile($FW, "$tmpdir/fwtmp2");
 278     print $FW "$CMD\001$PAD";
 279     print $FW "$CMD\000$PAD";
 280     close($FW);
 281
 282     verify("$tmpdir/fwtmp3", $hash);
 283     copy("$tmpdir/fwtmp3", $outfile);
 284
 285     $outfile;
 286 }
 287
 288 sub dibusb {
 289         my $url = "http://www.linuxtv.org/downloads/firmware/dvb-usb-dibusb-5.0.0.11.fw";
 290         my $outfile = "dvb-dibusb-5.0.0.11.fw";
 291         my $hash = "fa490295a527360ca16dcdf3224ca243";
 292
 293         checkstandard();
 294
 295         wgetfile($outfile, $url);
 296         verify($outfile,$hash);
 297
 298         $outfile;
 299 }
 300
 301 sub nxt2002 {
 302     my $sourcefile = "Technisat_DVB-PC_4_4_COMPACT.zip";
 303     my $url = "http://www.bbti.us/download/windows/$sourcefile";
 304     my $hash = "476befae8c7c1bb9648954060b1eec1f";
 305     my $outfile = "dvb-fe-nxt2002.fw";
 306     my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
 307
 308     checkstandard();
 309
 310     wgetfile($sourcefile, $url);
 311     unzip($sourcefile, $tmpdir);
 312     verify("$tmpdir/SkyNET.sys", $hash);
 313     extract("$tmpdir/SkyNET.sys", 331624, 5908, $outfile);
 314
 315     $outfile;
 316 }
 317
 318 sub nxt2004 {
 319     my $sourcefile = "AVerTVHD_MCE_A180_Drv_v1.2.2.16.zip";
 320     my $url = "http://www.avermedia-usa.com/support/Drivers/$sourcefile";
 321     my $hash = "111cb885b1e009188346d72acfed024c";
 322     my $outfile = "dvb-fe-nxt2004.fw";
 323     my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
 324
 325     checkstandard();
 326
 327     wgetfile($sourcefile, $url);
 328     unzip($sourcefile, $tmpdir);
 329     verify("$tmpdir/3xHybrid.sys", $hash);
 330     extract("$tmpdir/3xHybrid.sys", 465304, 9584, $outfile);
 331
 332     $outfile;
 333 }
 334
 335 sub or51211 {
 336     my $fwfile = "dvb-fe-or51211.fw";
 337     my $url = "http://linuxtv.org/downloads/firmware/$fwfile";
 338     my $hash = "d830949c771a289505bf9eafc225d491";
 339
 340     checkstandard();
 341
 342     wgetfile($fwfile, $url);
 343     verify($fwfile, $hash);
 344
 345     $fwfile;
 346 }
 347
 348 sub cx231xx {
 349     my $fwfile = "v4l-cx231xx-avcore-01.fw";
 350     my $url = "http://linuxtv.org/downloads/firmware/$fwfile";
 351     my $hash = "7d3bb956dc9df0eafded2b56ba57cc42";
 352
 353     checkstandard();
 354
 355     wgetfile($fwfile, $url);
 356     verify($fwfile, $hash);
 357
 358     $fwfile;
 359 }
 360
 361 sub cx18 {
 362     my $url = "http://linuxtv.org/downloads/firmware/";
 363
 364     my %files = (
 365         'v4l-cx23418-apu.fw' => '588f081b562f5c653a3db1ad8f65939a',
 366         'v4l-cx23418-cpu.fw' => 'b6c7ed64bc44b1a6e0840adaeac39d79',
 367         'v4l-cx23418-dig.fw' => '95bc688d3e7599fd5800161e9971cc55',
 368     );
 369
 370     checkstandard();
 371
 372     my $allfiles;
 373     foreach my $fwfile (keys %files) {
 374         wgetfile($fwfile, "$url/$fwfile");
 375         verify($fwfile, $files{$fwfile});
 376         $allfiles .= " $fwfile";
 377     }
 378
 379     $allfiles =~ s/^\s//;
 380
 381     $allfiles;
 382 }
 383
 384 sub mpc718 {
 385     my $archive = 'Yuan MPC718 TV Tuner Card 2.13.10.1016.zip';
 386     my $url = "ftp://ftp.work.acer-euro.com/desktop/aspire_idea510/vista/Drivers/$archive";
 387     my $fwfile = "dvb-cx18-mpc718-mt352.fw";
 388     my $tmpdir = tempdir(DIR => "/tmp", CLEANUP => 1);
 389
 390     checkstandard();
 391     wgetfile($archive, $url);
 392     unzip($archive, $tmpdir);
 393
 394     my $sourcefile = "$tmpdir/Yuan MPC718 TV Tuner Card 2.13.10.1016/mpc718_32bit/yuanrap.sys";
 395     my $found = 0;
 396
 397     open IN, '<', $sourcefile or die "Couldn't open $sourcefile to extract $fwfile data\n";
 398     binmode IN;
 399     open OUT, '>', $fwfile;
 400     binmode OUT;
 401     {
 402         # Block scope because we change the line terminator variable $/
 403         my $prevlen = 0;
 404         my $currlen;
 405
 406         # Buried in the data segment are 3 runs of almost identical
 407         # register-value pairs that end in 0x5d 0x01 which is a "TUNER GO"
 408         # command for the MT352.
 409         # Pull out the middle run (because it's easy) of register-value
 410         # pairs to make the "firmware" file.
 411
 412         local $/ = "\x5d\x01"; # MT352 "TUNER GO"
 413
 414         while (<IN>) {
 415             $currlen = length($_);
 416             if ($prevlen == $currlen && $currlen <= 64) {
 417                 chop; chop; # Get rid of "TUNER GO"
 418                 s/^\0\0//;  # get rid of leading 00 00 if it's there
 419                 printf OUT "$_";
 420                 $found = 1;
 421                 last;
 422             }
 423             $prevlen = $currlen;
 424         }
 425     }
 426     close OUT;
 427     close IN;
 428     if (!$found) {
 429         unlink $fwfile;
 430         die "Couldn't find valid register-value sequence in $sourcefile for $fwfile\n";
 431     }
 432     $fwfile;
 433 }
 434
 435 sub cx23885 {
 436     my $url = "http://linuxtv.org/downloads/firmware/";
 437
 438     my %files = (
 439         'v4l-cx23885-avcore-01.fw' => 'a9f8f5d901a7fb42f552e1ee6384f3bb',
 440         'v4l-cx23885-enc.fw'       => 'a9f8f5d901a7fb42f552e1ee6384f3bb',
 441     );
 442
 443     checkstandard();
 444
 445     my $allfiles;
 446     foreach my $fwfile (keys %files) {
 447         wgetfile($fwfile, "$url/$fwfile");
 448         verify($fwfile, $files{$fwfile});
 449         $allfiles .= " $fwfile";
 450     }
 451
 452     $allfiles =~ s/^\s//;
 453
 454     $allfiles;
 455 }
 456
 457 sub pvrusb2 {
 458     my $url = "http://linuxtv.org/downloads/firmware/";
 459
 460     my %files = (
 461         'v4l-cx25840.fw'           => 'dadb79e9904fc8af96e8111d9cb59320',
 462     );
 463
 464     checkstandard();
 465
 466     my $allfiles;
 467     foreach my $fwfile (keys %files) {
 468         wgetfile($fwfile, "$url/$fwfile");
 469         verify($fwfile, $files{$fwfile});
 470         $allfiles .= " $fwfile";
 471     }
 472
 473     $allfiles =~ s/^\s//;
 474
 475     $allfiles;
 476 }
 477
 478 sub or51132_qam {
 479     my $fwfile = "dvb-fe-or51132-qam.fw";
 480     my $url = "http://linuxtv.org/downloads/firmware/$fwfile";
 481     my $hash = "7702e8938612de46ccadfe9b413cb3b5";
 482
 483     checkstandard();
 484
 485     wgetfile($fwfile, $url);
 486     verify($fwfile, $hash);
 487
 488     $fwfile;
 489 }
 490
 491 sub or51132_vsb {
 492     my $fwfile = "dvb-fe-or51132-vsb.fw";
 493     my $url = "http://linuxtv.org/downloads/firmware/$fwfile";
 494     my $hash = "c16208e02f36fc439a557ad4c613364a";
 495
 496     checkstandard();
 497
 498     wgetfile($fwfile, $url);
 499     verify($fwfile, $hash);
 500
 501     $fwfile;
 502 }
 503
 504 sub bluebird {
 505         my $url = "http://www.linuxtv.org/download/dvb/firmware/dvb-usb-bluebird-01.fw";
 506         my $outfile = "dvb-usb-bluebird-01.fw";
 507         my $hash = "658397cb9eba9101af9031302671f49d";
 508
 509         checkstandard();
 510
 511         wgetfile($outfile, $url);
 512         verify($outfile,$hash);
 513
 514         $outfile;
 515 }
 516
 517 # ---------------------------------------------------------------
 518 # Utilities
 519
 520 sub checkstandard {
 521     if (system("which unzip > /dev/null 2>&1")) {
 522         die "This firmware requires the unzip command - see ftp://ftp.info-zip.org/pub/infozip/UnZip.html\n";
 523     }
 524     if (system("which md5sum > /dev/null 2>&1")) {
 525         die "This firmware requires the md5sum command - see http://www.gnu.org/software/coreutils/\n";
 526     }
 527     if (system("which wget > /dev/null 2>&1")) {
 528         die "This firmware requires the wget command - see http://wget.sunsite.dk/\n";
 529     }
 530 }
 531
 532 sub checkunshield {
 533     if (system("which unshield > /dev/null 2>&1")) {
 534         die "This firmware requires the unshield command - see http://sourceforge.net/projects/synce/\n";
 535     }
 536 }
 537
 538 sub wgetfile {
 539     my ($sourcefile, $url) = @_;
 540
 541     if (! -f $sourcefile) {
 542         system("wget -O \"$sourcefile\" \"$url\"") and die "wget failed - unable to download firmware";
 543     }
 544 }
 545
 546 sub unzip {
 547     my ($sourcefile, $todir) = @_;
 548
 549     $status = system("unzip -q -o -d \"$todir\" \"$sourcefile\" 2>/dev/null" );
 550     if ((($status >> 8) > 2) || (($status & 0xff) != 0)) {
 551         die ("unzip failed - unable to extract firmware");
 552     }
 553 }
 554
 555 sub unshield {
 556     my ($sourcefile, $todir) = @_;
 557
 558     system("unshield x -d \"$todir\" \"$sourcefile\" > /dev/null" ) and die ("unshield failed - unable to extract firmware");
 559 }
 560
 561 sub verify {
 562     my ($filename, $hash) = @_;
 563     my ($testhash);
 564
 565     open(CMD, "md5sum \"$filename\"|");
 566     $testhash = <CMD>;
 567     $testhash =~ /([a-zA-Z0-9]*)/;
 568     $testhash = $1;
 569     close CMD;
 570     die "Hash of extracted file does not match!\n" if ($testhash ne $hash);
 571 }
 572
 573 sub copy {
 574     my ($from, $to) = @_;
 575
 576     system("cp -f \"$from\" \"$to\"") and die ("cp failed");
 577 }
 578
 579 sub extract {
 580     my ($infile, $offset, $length, $outfile) = @_;
 581     my ($chunklength, $buf, $rcount);
 582
 583     open INFILE, "<$infile";
 584     open OUTFILE, ">$outfile";
 585     sysseek(INFILE, $offset, SEEK_SET);
 586     while($length > 0) {
 587         # Calc chunk size
 588         $chunklength = 2048;
 589         $chunklength = $length if ($chunklength > $length);
 590
 591         $rcount = sysread(INFILE, $buf, $chunklength);
 592         die "Ran out of data\n" if ($rcount != $chunklength);
 593         syswrite(OUTFILE, $buf);
 594         $length -= $rcount;
 595     }
 596     close INFILE;
 597     close OUTFILE;
 598 }
 599
 600 sub appendfile {
 601     my ($FH, $infile) = @_;
 602     my ($buf);
 603
 604     open INFILE, "<$infile";
 605     while(1) {
 606         $rcount = sysread(INFILE, $buf, 2048);
 607         last if ($rcount == 0);
 608         print $FH $buf;
 609     }
 610     close(INFILE);
 611 }
 612
 613 sub delzero{
 614         my ($infile,$outfile) =@_;
 615
 616         open INFILE,"<$infile";
 617         open OUTFILE,">$outfile";
 618         while (1){
 619                 $rcount=sysread(INFILE,$buf,22);
 620                 $len=ord(substr($buf,0,1));
 621                 print OUTFILE substr($buf,0,1);
 622                 print OUTFILE substr($buf,2,$len+3);
 623         last if ($rcount<1);
 624         printf OUTFILE "%c",0;
 625 #print $len." ".length($buf)."\n";
 626
 627         }
 628         close(INFILE);
 629         close(OUTFILE);
 630 }
 631
 632 sub syntax() {
 633     print STDERR "syntax: get_dvb_firmware <component>\n";
 634     print STDERR "Supported components:\n";
 635     for($i=0; $i < scalar(@components); $i++) {
 636         print STDERR "\t" . $components[$i] . "\n";
 637     }
 638     exit(1);
 639 }