diff options
Diffstat (limited to 'v4l2-apps/lib/libv4l/libv4lconvert/pac207.c')
| -rw-r--r-- | v4l2-apps/lib/libv4l/libv4lconvert/pac207.c | 418 |
1 files changed, 0 insertions, 418 deletions
diff --git a/v4l2-apps/lib/libv4l/libv4lconvert/pac207.c b/v4l2-apps/lib/libv4l/libv4lconvert/pac207.c deleted file mode 100644 index 97ef4ebc0..000000000 --- a/v4l2-apps/lib/libv4l/libv4lconvert/pac207.c +++ /dev/null @@ -1,418 +0,0 @@ -/* - -# PAC207 decoder -# Bertrik.Sikken. Thomas Kaiser (C) 2005 -# Copyright (C) 2003 2004 2005 Michel Xhaard - -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License as published by -# the Free Software Foundation; either version 2.1 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - -# Note this code was originally licensed under the GNU GPL instead of the -# GNU LGPL, its license has been changed with permission, see the permission -# mails at the end of this file. - -*/ - -#include <string.h> -#include "libv4lconvert-priv.h" - -#define CLIP(color) (unsigned char)(((color)>0xFF)?0xff:(((color)<0)?0:(color))) - -/* FIXME not threadsafe */ -static int decoder_initialized = 0; - -static struct { - unsigned char is_abs; - unsigned char len; - signed char val; -} table[256]; - -static void init_pixart_decoder(void) -{ - int i; - int is_abs, val, len; - for (i = 0; i < 256; i++) { - is_abs = 0; - val = 0; - len = 0; - if ((i & 0xC0) == 0) { - /* code 00 */ - val = 0; - len = 2; - } else if ((i & 0xC0) == 0x40) { - /* code 01 */ - val = -5; - len = 2; - } else if ((i & 0xC0) == 0x80) { - /* code 10 */ - val = +5; - len = 2; - } else if ((i & 0xF0) == 0xC0) { - /* code 1100 */ - val = -10; - len = 4; - } else if ((i & 0xF0) == 0xD0) { - /* code 1101 */ - val = +10; - len = 4; - } else if ((i & 0xF8) == 0xE0) { - /* code 11100 */ - val = -15; - len = 5; - } else if ((i & 0xF8) == 0xE8) { - /* code 11101 */ - val = +15; - len = 5; - } else if ((i & 0xFC) == 0xF0) { - /* code 111100 */ - val = -20; - len = 6; - } else if ((i & 0xFC) == 0xF4) { - /* code 111101 */ - val = +20; - len = 6; - } else if ((i & 0xF8) == 0xF8) { - /* code 11111xxxxxx */ - is_abs = 1; - val = 0; - len = 5; - } - table[i].is_abs = is_abs; - table[i].val = val; - table[i].len = len; - } - decoder_initialized = 1; -} - -static inline unsigned char getByte(const unsigned char *inp, - unsigned int bitpos) -{ - const unsigned char *addr; - addr = inp + (bitpos >> 3); - return (addr[0] << (bitpos & 7)) | (addr[1] >> (8 - (bitpos & 7))); -} - -static inline unsigned short getShort(const unsigned char *pt) -{ - return ((pt[0] << 8) | pt[1]); -} - -static int -pac_decompress_row(const unsigned char *inp, unsigned char *outp, int width) -{ - int col; - int val; - int bitpos; - unsigned char code; - - if (!decoder_initialized) - init_pixart_decoder(); - - /* first two pixels are stored as raw 8-bit */ - *outp++ = inp[2]; - *outp++ = inp[3]; - bitpos = 32; - - /* main decoding loop */ - for (col = 2; col < width; col++) { - /* get bitcode */ - - code = getByte(inp, bitpos); - bitpos += table[code].len; - - /* calculate pixel value */ - if (table[code].is_abs) { - /* absolute value: get 6 more bits */ - code = getByte(inp, bitpos); - bitpos += 6; - *outp++ = code & 0xFC; - } else { - /* relative to left pixel */ - val = outp[-2] + table[code].val; - *outp++ = CLIP(val); - } - } - - /* return line length, rounded up to next 16-bit word */ - return 2 * ((bitpos + 15) / 16); -} - -void v4lconvert_decode_pac207(const unsigned char *inp, unsigned char *outp, - int width, int height) -{ -/* we should received a whole frame with header and EOL marker -in myframe->data and return a GBRG pattern in frame->tmpbuffer -remove the header then copy line by line EOL is set with 0x0f 0xf0 marker -or 0x1e 0xe1 for compressed line*/ - unsigned short word; - int row; - - /* iterate over all rows */ - for (row = 0; row < height; row++) { - word = getShort(inp); - switch (word) { - case 0x0FF0: - memcpy(outp, inp + 2, width); - inp += (2 + width); - break; - case 0x1EE1: - inp += pac_decompress_row(inp, outp, width); - break; - - case 0x2DD2: /* prefix for "stronger" compressed lines, currently the - kernel driver programs the cam so that we should not - get any of these */ - - default: /* corrupt frame */ - /* FIXME add error reporting */ - return; - } - outp += width; - } - - return; -} - - - - -/* -Return-Path: <thomas@kaiser-linux.li> -Received: from koko.hhs.nl ([145.52.2.16] verified) - by hhs.nl (CommuniGate Pro SMTP 4.3.6) - with ESMTP id 88906346 for j.w.r.degoede@hhs.nl; Thu, 26 Jun 2008 01:17:00 +0200 -Received: from exim (helo=koko) - by koko.hhs.nl with local-smtp (Exim 4.62) - (envelope-from <thomas@kaiser-linux.li>) - id 1KBeEW-0001qu-H6 - for j.w.r.degoede@hhs.nl; Thu, 26 Jun 2008 01:17:00 +0200 -Received: from [192.87.102.74] (port=41049 helo=filter6-ams.mf.surf.net) - by koko.hhs.nl with esmtp (Exim 4.62) - (envelope-from <thomas@kaiser-linux.li>) - id 1KBeEV-0001qn-2T - for j.w.r.degoede@hhs.nl; Thu, 26 Jun 2008 01:17:00 +0200 -Received: from smtp0.lie-comtel.li (smtp0.lie-comtel.li [217.173.238.80]) - by filter6-ams.mf.surf.net (8.13.8/8.13.8/Debian-3) with ESMTP id m5PNGwSF007539 - for <j.w.r.degoede@hhs.nl>; Thu, 26 Jun 2008 01:16:58 +0200 -Received: from localhost (localhost.lie-comtel.li [127.0.0.1]) - by smtp0.lie-comtel.li (Postfix) with ESMTP id DDB609FEC1D; - Thu, 26 Jun 2008 00:16:56 +0100 (GMT-1) -X-Virus-Scanned: Virus scanned by amavis at smtp.lie-comtel.li -Received: from [192.168.0.16] (217-173-228-198.cmts.powersurf.li [217.173.228.198]) - by smtp0.lie-comtel.li (Postfix) with ESMTP id 80B589FEC19; - Thu, 26 Jun 2008 00:16:56 +0100 (GMT-1) -Message-ID: <4862D211.3000802@kaiser-linux.li> -Date: Thu, 26 Jun 2008 01:17:37 +0200 -From: Thomas Kaiser <thomas@kaiser-linux.li> -User-Agent: Thunderbird 2.0.0.14 (X11/20080505) -MIME-Version: 1.0 -To: Hans de Goede <j.w.r.degoede@hhs.nl> -CC: Thomas Kaiser <spca5xx@kaiser-linux.li>, bertrik@zonnet.nl, - mxhaard@magic.fr -Subject: Re: pac207 bayer decompression algorithm license question -References: <4862C0A4.3060003@hhs.nl> -In-Reply-To: <4862C0A4.3060003@hhs.nl> -Content-Type: text/plain; charset=ISO-8859-1; format=flowed -Content-Transfer-Encoding: 7bit -X-Canit-CHI2: 0.00 -X-Bayes-Prob: 0.0001 (Score 0, tokens from: @@RPTN) -X-Spam-Score: 0.00 () [Tag at 8.00] -X-CanItPRO-Stream: hhs:j.w.r.degoede@hhs.nl (inherits from hhs:default,base:default) -X-Canit-Stats-ID: 88604132 - 38b3b44cd798 -X-Scanned-By: CanIt (www . roaringpenguin . com) on 192.87.102.74 -X-Anti-Virus: Kaspersky Anti-Virus for MailServers 5.5.2/RELEASE, bases: 25062008 #787666, status: clean - -Hello Hans - -Hans de Goede wrote: -> Hi, -> -> As you may have seen on the mailinglist, I've created a userspace -> library to handle cam specific format handling in userspace where it -> belongs, see: -> http://hansdegoede.livejournal.com/ -Yes, I saw it on the mail list and I think it is a good idea :-) -> -> I would like to also add support for decompressing the pac207's -> compressed bayer to this lib (and remove it from the kernel driver) -> for this I need permission to relicense the decompress code under the -> LGPL (version 2 or later). -Actually, this was done by Bertrik Sikken (bertrik@zonnet.nl), Michel -Xhaard (mxhaard@magic.fr) and me. But Bertrik was the one who found out -how to decode the lines :-) -> -> Can you give me permission for this, or if the code is not yours put -> me in contact with someone who can? -For me it's no problem to release it with LGPL. Maybe you have to ask -the other one's also. -> -> Thanks & Regards, -> -> Hans - -Rgeards, Thomas -*/ - -/* -Return-Path: <mxhaard@magic.fr> -Received: from koko.hhs.nl ([145.52.2.16] verified) - by hhs.nl (CommuniGate Pro SMTP 4.3.6) - with ESMTP id 88910192 for j.w.r.degoede@hhs.nl; Thu, 26 Jun 2008 09:15:37 +0200 -Received: from exim (helo=koko) - by koko.hhs.nl with local-smtp (Exim 4.62) - (envelope-from <mxhaard@magic.fr>) - id 1KBlhh-0006Fi-Oe - for j.w.r.degoede@hhs.nl; Thu, 26 Jun 2008 09:15:37 +0200 -Received: from [194.171.167.220] (port=54180 helo=filter4-til.mf.surf.net) - by koko.hhs.nl with esmtp (Exim 4.62) - (envelope-from <mxhaard@magic.fr>) - id 1KBlhh-0006Fd-FY - for j.w.r.degoede@hhs.nl; Thu, 26 Jun 2008 09:15:37 +0200 -Received: from smtp4-g19.free.fr (smtp4-g19.free.fr [212.27.42.30]) - by filter4-til.mf.surf.net (8.13.8/8.13.8/Debian-3) with ESMTP id m5Q7FY1I006360 - for <j.w.r.degoede@hhs.nl>; Thu, 26 Jun 2008 09:15:34 +0200 -Received: from smtp4-g19.free.fr (localhost.localdomain [127.0.0.1]) - by smtp4-g19.free.fr (Postfix) with ESMTP id 51C683EA0E7; - Thu, 26 Jun 2008 09:15:34 +0200 (CEST) -Received: from [192.168.1.11] (lns-bzn-54-82-251-105-53.adsl.proxad.net [82.251.105.53]) - by smtp4-g19.free.fr (Postfix) with ESMTP id 1149E3EA0C7; - Thu, 26 Jun 2008 09:15:34 +0200 (CEST) -From: Michel Xhaard <mxhaard@magic.fr> -To: Hans de Goede <j.w.r.degoede@hhs.nl> -Subject: Re: pac207 bayer decompression algorithm license question -Date: Thu, 26 Jun 2008 11:15:32 +0200 -User-Agent: KMail/1.9.5 -Cc: bertrik@zonnet.nl, spca5xx@kaiser-linux.li, - "Jean-Francois Moine" <moinejf@free.fr> -References: <48633F02.3040108@hhs.nl> -In-Reply-To: <48633F02.3040108@hhs.nl> -MIME-Version: 1.0 -Content-Type: text/plain; - charset="iso-8859-1" -Content-Transfer-Encoding: quoted-printable -Content-Disposition: inline -Message-Id: <200806261115.32909.mxhaard@magic.fr> -X-Canit-CHI2: 0.00 -X-Bayes-Prob: 0.0001 (Score 0, tokens from: @@RPTN) -X-Spam-Score: 0.00 () [Tag at 8.00] -X-CanItPRO-Stream: hhs:j.w.r.degoede@hhs.nl (inherits from hhs:default,base:default) -X-Canit-Stats-ID: 88656338 - 0dde233cb8b5 -X-Scanned-By: CanIt (www . roaringpenguin . com) on 194.171.167.220 -X-Anti-Virus: Kaspersky Anti-Virus for MailServers 5.5.2/RELEASE, bases: 26062008 #787720, status: clean - -Le jeudi 26 juin 2008 09:02, Hans de Goede a =E9crit=A0: -> Hi, -> -> As you may have seen on the mailinglist, I've created a userspace library -> to handle cam specific format handling in userspace, see: -> http://hansdegoede.livejournal.com/ -> -> I would like to also add support for decompressing the pac207's compressed -> bayer to this lib (and remove it from the kernel driver) and I've heard -> from Thomas Kaiser that you are a co-author of the decompression code. In -> order to add support for decompressing pac207 compressed bayer to libv4l I -> need permission to relicense the decompression code under the LGPL (versi= -on -> 2 or later). -> -> Can you give me permission for this? -> -> Thanks & Regards, -> -> Hans -> -> -> -> p.s. -> -> Thomas has already given permission. - -=46or me it is ok and a good idea for all free world familly ;-). -Bests regards -=2D-=20 -Michel Xhaard -http://mxhaard.free.fr -*/ - -/* -Return-Path: <bertrik@sikken.nl> -Received: from koko.hhs.nl ([145.52.2.16] verified) - by hhs.nl (CommuniGate Pro SMTP 4.3.6) - with ESMTP id 88940205 for j.w.r.degoede@hhs.nl; Thu, 26 Jun 2008 22:03:30 +0200 -Received: from exim (helo=koko) - by koko.hhs.nl with local-smtp (Exim 4.62) - (envelope-from <bertrik@sikken.nl>) - id 1KBxgo-0003Dj-ET - for j.w.r.degoede@hhs.nl; Thu, 26 Jun 2008 22:03:30 +0200 -Received: from [192.87.102.69] (port=51992 helo=filter1-ams.mf.surf.net) - by koko.hhs.nl with esmtp (Exim 4.62) - (envelope-from <bertrik@sikken.nl>) - id 1KBxgo-0003Dd-5i - for j.w.r.degoede@hhs.nl; Thu, 26 Jun 2008 22:03:30 +0200 -Received: from pelian.kabelfoon.nl (pelian3.kabelfoon.nl [62.45.45.106]) - by filter1-ams.mf.surf.net (8.13.8/8.13.8/Debian-3) with ESMTP id m5QK3ThE007720 - for <j.w.r.degoede@hhs.nl>; Thu, 26 Jun 2008 22:03:29 +0200 -Received: from [192.168.1.1] (062-015-045-062.dynamic.caiway.nl [62.45.15.62]) - by pelian.kabelfoon.nl (Postfix) with ESMTP id 9239B428100 - for <j.w.r.degoede@hhs.nl>; Thu, 26 Jun 2008 22:03:29 +0200 (CEST) -Message-ID: <4863F611.80104@sikken.nl> -Date: Thu, 26 Jun 2008 22:03:29 +0200 -From: Bertrik Sikken <bertrik@sikken.nl> -User-Agent: Thunderbird 2.0.0.14 (Windows/20080421) -MIME-Version: 1.0 -To: Hans de Goede <j.w.r.degoede@hhs.nl> -Subject: Re: pac207 bayer decompression algorithm license question -References: <48633F02.3040108@hhs.nl> -In-Reply-To: <48633F02.3040108@hhs.nl> -X-Enigmail-Version: 0.95.6 -Content-Type: text/plain; charset=ISO-8859-1; format=flowed -Content-Transfer-Encoding: 7bit -X-Canit-CHI2: 0.00 -X-Bayes-Prob: 0.0001 (Score 0, tokens from: @@RPTN) -X-Spam-Score: 0.00 () [Tag at 8.00] -X-CanItPRO-Stream: hhs:j.w.r.degoede@hhs.nl (inherits from hhs:default,base:default) -X-Canit-Stats-ID: 88938005 - ef1f0836ffc7 -X-Scanned-By: CanIt (www . roaringpenguin . com) on 192.87.102.69 -X-Anti-Virus: Kaspersky Anti-Virus for MailServers 5.5.2/RELEASE, bases: 26062008 #787877, status: clean - -Hallo Hans, - -Hans de Goede wrote: -> Hi, -> -> As you may have seen on the mailinglist, I've created a userspace -> library to -> handle cam specific format handling in userspace, see: -> http://hansdegoede.livejournal.com/ - -O leuk, zoiets is naar mijn idee precies wat er nodig is voor webcam -support onder linux. Ik ben een jaar of 3 geleden heel actief geweest -met een aantal webcams, maar doe er tegenwoordig helemaal niets meer -aan. - -> I would like to also add support for decompressing the pac207's compressed -> bayer to this lib (and remove it from the kernel driver) and I've heard -> from Thomas Kaiser that you are a co-author of the decompression code. -> In order to add support for decompressing pac207 compressed bayer to -> libv4l I need -> permission to relicense the decompression code under the LGPL (version 2 -> or later). -> -> Can you give me permission for this? - -Ja, vind ik goed. - -Vriendelijke groet, -Bertrik -*/ |