diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..716ce5c --- /dev/null +++ b/.gitignore @@ -0,0 +1,16 @@ +Makefile +Makefile.in +.libs/ +.deps/ +*.o +*.raster +*.bin +aclocal.m4 +autom4te.cache/ +config.log +config.status +configure +depcomp +install-sh +missing +src/rastertocapt diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..be4021f --- /dev/null +++ b/AUTHORS @@ -0,0 +1 @@ +Alexey Galakhov diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..94a9ed0 --- /dev/null +++ b/COPYING @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Canon-LBP-2900.ppd b/Canon-LBP-2900.ppd new file mode 100644 index 0000000..0c2acf1 --- /dev/null +++ b/Canon-LBP-2900.ppd @@ -0,0 +1,88 @@ +*PPD-Adobe: "4.3" +*%%%% PPD file for LBP-2900 CAPT GDI printer with CUPS. +*%%%% Created by the CUPS PPD Compiler CUPS v1.5.3. +*% Copyright (C) 2011 Alexey Galakhov +*FormatVersion: "4.3" +*FileVersion: "0.1.0" +*LanguageVersion: English +*LanguageEncoding: ISOLatin1 +*PCFileName: "Canon-LBP-2900.ppd" +*Product: "(LBP-2900 CAPT GDI printer)" +*Manufacturer: "Canon" +*ModelName: "Canon LBP-2900 CAPT GDI printer" +*ShortNickName: "Canon LBP-2900 CAPT GDI printer" +*NickName: "Canon LBP-2900 CAPT GDI printer, 0.1.0" +*PSVersion: "(3010.000) 0" +*LanguageLevel: "3" +*ColorDevice: False +*DefaultColorSpace: Gray +*FileSystem: False +*Throughput: "1" +*LandscapeOrientation: Plus90 +*TTRasterizer: Type42 +*cupsVersion: 1.5 +*cupsModelNumber: 0 +*cupsManualCopies: False +*cupsFilter: "application/vnd.cups-raster 1 rastertocapt" +*cupsLanguages: "en" +*OpenUI *PageSize/Media Size: PickOne +*OrderDependency: 10 AnySetup *PageSize +*DefaultPageSize: A4 +*PageSize A4/A4: "<>setpagedevice" +*CloseUI: *PageSize +*OpenUI *PageRegion/Media Size: PickOne +*OrderDependency: 10 AnySetup *PageRegion +*DefaultPageRegion: A4 +*PageRegion A4/A4: "<>setpagedevice" +*CloseUI: *PageRegion +*DefaultImageableArea: A4 +*ImageableArea A4/A4: "13.35000038147 13.35000038147 581.650024414062 828.650024414062" +*DefaultPaperDimension: A4 +*PaperDimension A4/A4: "595 842" +*OpenUI *ColorModel/Color Mode: PickOne +*OrderDependency: 10 AnySetup *ColorModel +*DefaultColorModel: Gray +*ColorModel Gray/Grayscale: "<>setpagedevice" +*CloseUI: *ColorModel +*OpenUI *Resolution/Resolution: PickOne +*OrderDependency: 10 AnySetup *Resolution +*DefaultResolution: 600dpi +*Resolution 600dpi/600 DPI: "<>setpagedevice" +*CloseUI: *Resolution +*DefaultFont: Courier +*Font AvantGarde-Book: Standard "(1.05)" Standard ROM +*Font AvantGarde-BookOblique: Standard "(1.05)" Standard ROM +*Font AvantGarde-Demi: Standard "(1.05)" Standard ROM +*Font AvantGarde-DemiOblique: Standard "(1.05)" Standard ROM +*Font Bookman-Demi: Standard "(1.05)" Standard ROM +*Font Bookman-DemiItalic: Standard "(1.05)" Standard ROM +*Font Bookman-Light: Standard "(1.05)" Standard ROM +*Font Bookman-LightItalic: Standard "(1.05)" Standard ROM +*Font Courier: Standard "(1.05)" Standard ROM +*Font Courier-Bold: Standard "(1.05)" Standard ROM +*Font Courier-BoldOblique: Standard "(1.05)" Standard ROM +*Font Courier-Oblique: Standard "(1.05)" Standard ROM +*Font Helvetica: Standard "(1.05)" Standard ROM +*Font Helvetica-Bold: Standard "(1.05)" Standard ROM +*Font Helvetica-BoldOblique: Standard "(1.05)" Standard ROM +*Font Helvetica-Narrow: Standard "(1.05)" Standard ROM +*Font Helvetica-Narrow-Bold: Standard "(1.05)" Standard ROM +*Font Helvetica-Narrow-BoldOblique: Standard "(1.05)" Standard ROM +*Font Helvetica-Narrow-Oblique: Standard "(1.05)" Standard ROM +*Font Helvetica-Oblique: Standard "(1.05)" Standard ROM +*Font NewCenturySchlbk-Bold: Standard "(1.05)" Standard ROM +*Font NewCenturySchlbk-BoldItalic: Standard "(1.05)" Standard ROM +*Font NewCenturySchlbk-Italic: Standard "(1.05)" Standard ROM +*Font NewCenturySchlbk-Roman: Standard "(1.05)" Standard ROM +*Font Palatino-Bold: Standard "(1.05)" Standard ROM +*Font Palatino-BoldItalic: Standard "(1.05)" Standard ROM +*Font Palatino-Italic: Standard "(1.05)" Standard ROM +*Font Palatino-Roman: Standard "(1.05)" Standard ROM +*Font Symbol: Special "(001.005)" Special ROM +*Font Times-Bold: Standard "(1.05)" Standard ROM +*Font Times-BoldItalic: Standard "(1.05)" Standard ROM +*Font Times-Italic: Standard "(1.05)" Standard ROM +*Font Times-Roman: Standard "(1.05)" Standard ROM +*Font ZapfChancery-MediumItalic: Standard "(1.05)" Standard ROM +*Font ZapfDingbats: Special "(001.005)" Special ROM +*% End of Canon-LBP-2900.ppd, 03920 bytes. diff --git a/ChangeLog b/ChangeLog new file mode 100644 index 0000000..e69de29 diff --git a/INSTALL b/INSTALL new file mode 100644 index 0000000..a1e89e1 --- /dev/null +++ b/INSTALL @@ -0,0 +1,370 @@ +Installation Instructions +************************* + +Copyright (C) 1994-1996, 1999-2002, 2004-2011 Free Software Foundation, +Inc. + + Copying and distribution of this file, with or without modification, +are permitted in any medium without royalty provided the copyright +notice and this notice are preserved. 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Or, you can set the +`CONFIG_SITE' environment variable to the location of the site script. +A warning: not all `configure' scripts look for a site script. + +Defining Variables +================== + + Variables not defined in a site shell script can be set in the +environment passed to `configure'. However, some packages may run +configure again during the build, and the customized values of these +variables may be lost. In order to avoid this problem, you should set +them in the `configure' command line, using `VAR=value'. For example: + + ./configure CC=/usr/local2/bin/gcc + +causes the specified `gcc' to be used as the C compiler (unless it is +overridden in the site shell script). + +Unfortunately, this technique does not work for `CONFIG_SHELL' due to +an Autoconf bug. Until the bug is fixed you can use this workaround: + + CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash + +`configure' Invocation +====================== + + `configure' recognizes the following options to control how it +operates. + +`--help' +`-h' + Print a summary of all of the options to `configure', and exit. + +`--help=short' +`--help=recursive' + Print a summary of the options unique to this package's + `configure', and exit. The `short' variant lists options used + only in the top level, while the `recursive' variant lists options + also present in any nested packages. + +`--version' +`-V' + Print the version of Autoconf used to generate the `configure' + script, and exit. + +`--cache-file=FILE' + Enable the cache: use and save the results of the tests in FILE, + traditionally `config.cache'. FILE defaults to `/dev/null' to + disable caching. + +`--config-cache' +`-C' + Alias for `--cache-file=config.cache'. + +`--quiet' +`--silent' +`-q' + Do not print messages saying which checks are being made. To + suppress all normal output, redirect it to `/dev/null' (any error + messages will still be shown). + +`--srcdir=DIR' + Look for the package's source code in directory DIR. Usually + `configure' can determine that directory automatically. + +`--prefix=DIR' + Use DIR as the installation prefix. *note Installation Names:: + for more details, including other options available for fine-tuning + the installation locations. + +`--no-create' +`-n' + Run the configure checks, but stop before creating any output + files. + +`configure' also accepts some other, not widely useful, options. Run +`configure --help' for more details. + diff --git a/Makefile.am b/Makefile.am new file mode 100644 index 0000000..2cad62a --- /dev/null +++ b/Makefile.am @@ -0,0 +1,2 @@ + +SUBDIRS = src diff --git a/NEWS b/NEWS new file mode 100644 index 0000000..e69de29 diff --git a/README b/README new file mode 100644 index 0000000..e69de29 diff --git a/SPECS b/SPECS new file mode 100644 index 0000000..c7f4a8b --- /dev/null +++ b/SPECS @@ -0,0 +1,234 @@ +This document describes printing protocol of Canon CAPT printers. + +Written by Alexey Galakhov + +Reverse engineering done by: +2004 Nicolas Boichat (LBP-810, based on Rildo Pragana's Samsung ML-85P work) +2010 Alexey Galakhov (LBP-2900) +2010 Benoit Bolsee (LBP-3010) +2013 Alexey Galakhov - summarized everything and corrected errors + +1. A0-command protocol +====================== + +The same high level protocol called "CAPT" seems to be used by all Canon LBP +printers, both LPT and USB. The exact command set depends on the printer model. +The protocol is essentially bi-directional. The same command set is used in the +unidirectional mode for communication between Canon proprietary utility +"captfilter" and the printer port monitor. This commuinication uses an +extended command set that is translated to the printer command set somewhere +inside "ccpd" daemon. + + +1.1. General format of CAPT commands + +All transmit are in 16-bit, little-endian words. Each command has the HEADER +of 4 bytes followed: + +struct capt_packet { + uint16_t command; /* command code */ + uint16_t size; /* size of the transmit, incl. header */ + uint16_t payload[(size - 4) / 2]; /* data, 0 or more bytes */ +}; + +Example: command 0xD0A1 with no payload is encoded as follows: A1 D0 04 00. + +Some commands have replies. A printer reply has the same format as the command. +The command code in the reply is the same as in the command. + +Example: +command: A5 E0 14 00 EE DB EA AD 00 00 00 00 00 00 00 00 00 00 00 00 +reply: A5 E0 06 00 00 00 + +If the command requires a reply, the driver MUST read the reply before issuing +any other commands. Failure to do so will cause printer deadlock. If the command +requires no reply, the driver should not try to wait to the reply or else it +will wait forever. + +If the reply has size of more than 6 bytes, it is split into two packets, the +one of 6 bytes and the one with the rest. No replies are shorter than 6 bytes. + +Quirk: some printer models reply to some commands with size encoded as BCD +instead of normal binary code. This is obviously a bug in the printer firmware. +Example: decimal 57 may be encoded as 0x57 0x00 and not as 0x39 0x00. + + +1.2. Common printer control commands + + +1.3. Compression control commands + +All 0xD0xx commands have no reply. They all are one-way. + + +* 0xD0A0 +Page parameters. Mandatory. Issued before each page. + 0-11: ? 00 00 30 2a 02 00 00 00 1f 1f 1f 1f + ^^ related to page dimensions? letter=0d, A4=02 + 12: 00 paper type A? 00 = plain, 01 = thick + 13-18: ? 11 04 00 01 01 02 + 19: toner saving (0 = no, 1 = yes) + 20-25: ? 00 00 78 00 60 00 + 26-27: uint16_t image width (line size in bytes) = LINESIZE for compressor + 28-29: uint16_t image height (number of lines) + 30-31: uint16_t paper width (pixels = inches * 600) + 32-33: uint16_t paper height (pixels = inches * 600) + -- Older printers have only 34 bytes + 34-35: ? 00 00 + 36: 01 paper type B? 01 = plain, 02 = thick + 37-39: ? 00 00 00 + + +* 0xD0A1 +Initialize page? Has no data. Issued before each page. + + +* 0xD0A2 +Reset? Has no data. Issued after page but may be issued before page. + + +* 0xD0A4 +Hi-SCoA compression parameters on Hi-SCoA printers. Mandatory. Issued before +sending Hi-SCoA compressed data. See section 3 for the complete description of +these parameters. Contains 8-byte data. + 0: int8_t value of L3, positive + 1: int8_t value of L5, positive + 2: 0x01 unknown, may be flag + 3: 0x01 unknown, may be bpp (0x08 for color printers?) + 4: int8_t value of L0 (?), always zero + 5: int8_t value of L2, negative + 6-7: int16_t value of L4 (?) + +* 0xD0A5, 0xD0A6, 0xD0A7 +Hi-SCoA parameters for color printers? + +* 0xD0A9 - multi-command +Contains other 0xD0nn commands, like that: A9 D0 C0 00 A1 D0 04 00 A2 D0 04 00 +Used to send multiple 0xD0nn commands in a row on printers that support it. + + +2. SCoA compression algorithm +============================= + +To be written. + + +3. Hi-SCoA compression algorithm +================================ + +Hi-SCoA data are compressed band by band, each band is compressed independently +of others. Band size may vary. It seems that most printers may work with +different band sizes. The algorithm is known completely. + +3.1. Data encoding + +Hi-SCoA data are represented as a bit stream. Bits are written MSB first. The +entire stream is always 4-byte aligned by adding 1s up to 32-bit boundary. On a +little-endian machine the stream is written by bytes and not by 32-bit words. +This does not matter on big-endian. + +Example: bits 1,0,0,0,1,1,0,1,1,1,1,0,1,0,1,1 correspond to 8D EB FF FF. + +The encoded stream is obfuscated by XORing it with the constant value 0x43. +The above example becomes CE A8 BC BC. + + +3.2. Command encoding + +Hi-SCoA bit stream consists of commands. Command opcodes are written using +unary coding. There are 8 commands. Some commands have two subcommands which are +encoded by adding one bit after the command code. + +Command 0: LONGREP0 +Command 10: REPBYTE +Command 110: + subcommand 1: BYTE + subcommand 0: LONGREP2 +Command 1110: LONGREP3 +Command 11110: LONGREP4 +Command 111110: LONGREP5 +Command 1111110: + subcommand 1: ZEROBYTE + subcommand 0: PREFIX +Command 11111110: END +Bit sequence 11111111 used for alignment only and seems to be NOP. + + +3.3. Number encoding + +LONGREP commands use number parameter that is encoded in Elias gamma coding. +First, order is encoded by putting [order] 1s and one 0 to the stream. The order +is always 5 or less. Then [order+1] bits of the number N follow (MSB first). +Result is given by the formula: number = (1 << (order + 2)) - 1 - N. + +There are exceptions from this rule. Zero is encoded as 111111. If order is 0, +it is followed by one or two bits: 0 -> 1, 11 -> 2, 10 -> 3. + +Example: + 0 111111 + 1 00 + 2 011 + 3 010 + 4 1011 + 5 1010 + 6 1001 + 7 1000 + 8 110111 +15 110000 +16 11101111 +17 11101110 +etc. + +Numbers of 128 or more are not encoded this way. + +PREFIX command uses number parameter that is encoded in the following coding. +First, order is written in two bits (MSB first). Then [order] bits of N follow. +The resulting value is given by: prefix = 128 * ((1 << order) - 1 - N). + +Numbers of more than 512 are not encoded this way. + + +3.4. Command description + +Hi-SCoA uses a significantly simplified and limited variant of LZ77 compression. +In addition to the usual window it maintains a stash of no more than 16 bytes. +A byte may be pushed to the stash (the stash is shifted so that the last byte +has now index 0, like a stack). A byte may be popped from the stash by its +index. It is then always pushed back and becomes index 0. + +The stream consists of the following commands: + + BYTE - read the following 8 bits, put the corresponding byte to the stream + and push it to the stack + ZEROBYTE - shorter equivalent of BYTE 00000000 + REPBYTE - read the following 4 bits (i), take and remove [15-i]th byte from + the stash, put it to the stream and push back to the stash. + PREFIX - read the following prefix (see section 3.3) and apply it to the + next command. Used only before LONGREPx. + LONGREPx - read the following number N (see section 3.3) and copy prefix+N + bytes from output position POSx to the output. The following + positions are initially used: + POS0 = LINESIZE + L0 + POS2 = LINESIZE + L2 + POS3 = L3 + POS4 = L4 + POS5 = L5 + In addition, LONGREP2 exchanges L2 and L0 and LONGREP5 exchanges + L3 and L5 after copying. (This may be configurable, however). + LONGREP commands in Canon driver never cross line boundary but this + seems to be optional and not really needed. + END - read the following 2-bit number and stop decompression. Number + meanings are: + 00 - end of band + 01 - end of page + 10 - unknown/never seen + 11 - unknown/never seen + +Compression constants L0, L2, L3, L4, L5 and LINESIZE are sent to the +decompressor in 0xD0A0 and 0xD0A4 commands (see section 1.3). L0 is always 0, +other values are typically + L2 = -7, L3 = 1, L4 = (not used), L5 = 4, LINESIZE = 592 or 608 + L2 = -5, L3 = 4, L4 = 384, L5 = 12, LINESIZE = 592 +The actual values are probably optimized for certain dithering algorithm. They +rarely change but are not constant for the printer. + diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..35bd087 --- /dev/null +++ b/configure.ac @@ -0,0 +1,22 @@ +AC_PREREQ([2.69]) +AC_INIT([captdriver], [0.1.0]) + +AC_CONFIG_SRCDIR([src/common.h]) + +AM_INIT_AUTOMAKE([1.9 no-dist-gzip dist-xz tar-ustar]) +AC_LANG([C]) +AC_PROG_CC + +AC_PATH_PROG([CUPS_CONFIG], [cups-config]) +if test -z "${CUPS_CONFIG}"; then + AC_MSG_FAILURE([CUPS library not found.]) +fi +CUPS_CFLAGS="`${CUPS_CONFIG} --cflags`" +CUPS_LIBS="`${CUPS_CONFIG} --image --libs`" +AC_SUBST(CUPS_CFLAGS) +AC_SUBST(CUPS_LIBS) + +AC_CONFIG_FILES([Makefile + src/Makefile + ]) +AC_OUTPUT diff --git a/src/Makefile.am b/src/Makefile.am new file mode 100644 index 0000000..f3c1fcf --- /dev/null +++ b/src/Makefile.am @@ -0,0 +1,17 @@ +bin_PROGRAMS = rastertocapt + +rastertocapt_SOURCES = rastertocapt.c \ + std.h \ + word.h \ + capt-command.h capt-command.c \ + capt-status.h capt-status.c \ + generic-ops.h generic-ops.c \ + printer.h printer.c \ + paper.h paper.c \ + hiscoa-common.h hiscoa-common.c \ + hiscoa-compress.h hiscoa-compress.c + +rastertocapt_SOURCES += prn_lbp2900.c + +AM_CFLAGS = -std=c99 -Wall -Wextra -pedantic $(CUPS_CFLAGS) +rastertocapt_LDADD = $(CUPS_LIBS) diff --git a/src/capt-command.c b/src/capt-command.c new file mode 100644 index 0000000..1d6ea0d --- /dev/null +++ b/src/capt-command.c @@ -0,0 +1,197 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "capt-command.h" + +#include "std.h" +#include "word.h" + +#include +#include + +#include +#include + +/* TODO remove this */ +FILE *capt_debug_file = NULL; + +static uint8_t capt_iobuf[0x10000]; +static size_t capt_iosize; + +static void capt_debug_buf(const char *level, size_t size) +{ + size_t i; + if (size > capt_iosize) + size = capt_iosize; + for (i = 0; i < size; ++i) { + if (i != 0 && (i % 16) == 0) + fprintf(stderr, "\n%s: CAPT:", level); + fprintf(stderr, " %02X", capt_iobuf[i]); + } + if (size < capt_iosize) + fprintf(stderr, "... (%u more)", (unsigned) (capt_iosize - size)); + fprintf(stderr, "\n"); +} + +static void capt_send_buf(void) +{ + const uint8_t *iopos = capt_iobuf; + size_t iosize = capt_iosize; + + if (debug) { + fprintf(stderr, "DEBUG: CAPT: send "); + capt_debug_buf("DEBUG", 128); + } + + while (iosize) { + cups_sc_status_t status; + uint8_t tmpbuf[128]; + size_t tmpsize = sizeof(tmpbuf); + size_t sendsize = iosize; + if (sendsize > 4096) + sendsize = 4096; + + /* TODO remove this */ + if (capt_debug_file) + fwrite(iopos, 1, sendsize, capt_debug_file); + + fwrite(iopos, 1, sendsize, stdout); + iosize -= sendsize; + fflush(stdout); + + status = cupsSideChannelDoRequest(CUPS_SC_CMD_DRAIN_OUTPUT, + (char *) tmpbuf, (int *) &tmpsize, 5.0); + if (status != CUPS_SC_STATUS_OK) { + fprintf(stderr, "ERROR: CAPT: no reply from backend\n"); + exit(1); + } + } +} + +static void capt_recv_buf(size_t offset, size_t expected) +{ + ssize_t size; + if (offset + expected > sizeof(capt_iobuf)) { + fprintf(stderr, "ALERT: bug in CAPT driver, input buffer overflow\n"); + exit(1); + } + fprintf(stderr, "DEBUG: CAPT: waiting for %u bytes\n", (unsigned) expected); + size = cupsBackChannelRead((char *) capt_iobuf + offset, expected, 15.0); + if (size < 0) { + fprintf(stderr, "ERROR: CAPT: no reply from printer\n"); + exit(1); + } + capt_iosize = offset + size; +} + +const char *capt_identify(void) +{ + while (1) { + cups_sc_status_t status; + capt_iosize = sizeof(capt_iobuf) - 1; + status = cupsSideChannelDoRequest(CUPS_SC_CMD_GET_DEVICE_ID, + (char *) capt_iobuf, (int *) &capt_iosize, 60.0); + if (status != CUPS_SC_STATUS_OK) { + fprintf(stderr, "ERROR: CAPT: unable to communicate with printer\n"); + exit(1); + } + capt_iobuf[capt_iosize] = '\0'; + fprintf(stderr, "DEBUG: CAPT: printer ID string %s\n", capt_iobuf); + if (capt_iosize) + return (const char*) capt_iobuf; + sleep(1); + } +} + +static void capt_copy_cmd(uint16_t cmd, const void *buf, size_t size) +{ + if (capt_iosize + 4 + size > sizeof(capt_iobuf)) { + fprintf(stderr, "ALERT: bug in CAPT driver, output buffer overflow\n"); + exit(1); + } + if (buf) + memcpy(capt_iobuf + capt_iosize + 4, buf, size); + else + size = 0; + capt_iobuf[capt_iosize + 0] = LO(cmd); + capt_iobuf[capt_iosize + 1] = HI(cmd); + capt_iobuf[capt_iosize + 2] = LO(size + 4); + capt_iobuf[capt_iosize + 3] = HI(size + 4); + capt_iosize += size + 4; +} + +void capt_send(uint16_t cmd, const void *buf, size_t size) +{ + capt_iosize = 0; + capt_copy_cmd(cmd, buf, size); + capt_send_buf(); +} + +void capt_sendrecv(uint16_t cmd, const void *buf, size_t size, void *reply, size_t *reply_size) +{ + capt_send(cmd, buf, size); + capt_recv_buf(0, 6); + if (capt_iosize != 6 || WORD(capt_iobuf[0], capt_iobuf[1]) != cmd) { + fprintf(stderr, "ERROR: CAPT: bad reply from printer, " + "expected %02X %02X xx xx xx xx, got", LO(cmd), HI(cmd)); + capt_debug_buf("ERROR", 6); + exit(1); + } + if (WORD(capt_iobuf[2], capt_iobuf[3]) > 6) + capt_recv_buf(6, WORD(capt_iobuf[2], capt_iobuf[3]) - 6); + if (WORD(capt_iobuf[2], capt_iobuf[3]) != capt_iosize && + BCD(capt_iobuf[2], capt_iobuf[3]) != capt_iosize) { + fprintf(stderr, "ERROR: CAPT: bad reply from printer, " + "expected size %02X %02X, got %02X %02X\n", + capt_iobuf[2], capt_iobuf[3], LO(capt_iosize), HI(capt_iosize)); + capt_debug_buf("ERROR", capt_iosize); + exit(1); + } + if (debug) { + fprintf(stderr, "DEBUG: CAPT: recv "); + capt_debug_buf("DEBUG", capt_iosize); + } + if (reply) { + size_t copysize = reply_size ? *reply_size : capt_iosize; + if (copysize > capt_iosize) + copysize = capt_iosize; + memcpy(reply, capt_iobuf + 4, copysize); + } + if (reply_size) + *reply_size = capt_iosize; +} + +void capt_multi_begin(uint16_t cmd) +{ + capt_iobuf[0] = LO(cmd); + capt_iobuf[1] = HI(cmd); + capt_iosize = 4; +} + +void capt_multi_add(uint16_t cmd, const void *buf, size_t size) +{ + capt_copy_cmd(cmd, buf, size); +} + +void capt_multi_send(void) +{ + capt_iobuf[2] = LO(capt_iosize); + capt_iobuf[3] = HI(capt_iosize); + capt_send_buf(); +} diff --git a/src/capt-command.h b/src/capt-command.h new file mode 100644 index 0000000..5618377 --- /dev/null +++ b/src/capt-command.h @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#pragma once + +#include "std.h" + +enum capt_command { + CAPT_NOP = 0xA0A0, + CAPT_CHKFLAGS = 0xA0A1, + CAPT_CHKXSTATUS = 0xA0A8, + + CAPT_IEEE_IDENT = 0xA1A0, /* raw reply */ + CAPT_IDENT = 0xA1A1, + + CAPT_UPLOAD_0 = 0xA2A0, + + CAPT_START_0 = 0xA3A2, + + CAPT_PRINT_DATA = 0xC0A0, + CAPT_PRINT_DATA_END = 0xC0A4, + + CAPT_SET_PARM_PAGE = 0xD0A0, + CAPT_SET_PARM_1 = 0xD0A1, + CAPT_SET_PARM_2 = 0xD0A2, + CAPT_SET_PARM_HISCOA = 0xD0A4, + CAPT_SET_PARMS = 0xD0A9, + + CAPT_CHKSTATUS = 0xE0A0, + CAPT_START_2 = 0xE0A2, + CAPT_START_1 = 0xE0A3, + CAPT_START_3 = 0xE0A4, + CAPT_UPLOAD_2 = 0xE0A5, + CAPT_FIRE = 0xE0A7, + CAPT_JOB_END = 0xE0A9, + + CAPT_JOB_SETUP = 0xE1A1, +}; + + +const char *capt_identify(void); + +void capt_send(uint16_t cmd, const void *data, size_t size); +void capt_sendrecv(uint16_t cmd, const void *buf, size_t size, void *reply, size_t *reply_size); + +void capt_multi_begin(uint16_t cmd); +void capt_multi_add(uint16_t cmd, const void *data, size_t size); +void capt_multi_send(void); + +/* TODO remove this */ +#include +extern FILE *capt_debug_file; diff --git a/src/capt-status.c b/src/capt-status.c new file mode 100644 index 0000000..8715f18 --- /dev/null +++ b/src/capt-status.c @@ -0,0 +1,65 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "capt-status.h" + +#include "std.h" +#include "word.h" +#include "capt-command.h" + +#include +#include +#include + +static size_t status_size = 0; +static uint8_t status_rec[0x10000]; + +uint16_t capt_get_status(void) +{ + status_size = sizeof(status_rec); + capt_sendrecv(CAPT_CHKSTATUS, NULL, 0, status_rec, &status_size); + return WORD(status_rec[0], status_rec[1]); +} + +uint16_t capt_get_xstatus(void) +{ + uint16_t retval = capt_get_status(); + if (retval & CAPT_ST_XS) { + status_size = sizeof(status_rec); + capt_sendrecv(CAPT_CHKXSTATUS, NULL, 0, status_rec, &status_size); + retval = WORD(status_rec[0], status_rec[1]); + } + return retval; +} + +void capt_wait_ready(void) +{ + while (capt_get_status() & CAPT_ST_BU) + sleep(1); +} + +const uint8_t *capt_get_status_rec(void) +{ + return status_rec + 2; +} + +uint16_t capt_get_status_size(void) +{ + return status_size - 2; +} diff --git a/src/capt-status.h b/src/capt-status.h new file mode 100644 index 0000000..9f22bf8 --- /dev/null +++ b/src/capt-status.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#pragma once + +#include "std.h" + +enum capt_status_flags +{ + /* [R1][0][0][0]-[R2][0][R3][XS]-[BU][0][NR1][NR2]-[?][PR][NP][NR] */ + + CAPT_ST_NR = (1 << 0), + CAPT_ST_NR3 = (1 << 1), + CAPT_ST_PR = (1 << 2), + /* ? = (1 << 3), */ + + CAPT_ST_NR2 = (1 << 4), + CAPT_ST_NR1 = (1 << 5), + /* 0 = (1 << 6), */ + CAPT_ST_BU = (1 << 7), + + CAPT_ST_XS = (1 << 8), + CAPT_ST_R3 = (1 << 9), + /* 0 = (1 << 10), */ + CAPT_ST_R2 = (1 << 11), + + /* 0 = (1 << 12), */ + /* 0 = (1 << 13), */ + /* 0 = (1 << 14), */ + CAPT_ST_R1 = (1 << 15) +}; + +uint16_t capt_get_status(void); +uint16_t capt_get_xstatus(void); +void capt_wait_ready(void); +const uint8_t *capt_get_status_rec(void); +uint16_t capt_get_status_size(void); diff --git a/src/generic-ops.c b/src/generic-ops.c new file mode 100644 index 0000000..1bfa229 --- /dev/null +++ b/src/generic-ops.c @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "generic-ops.h" + +#include "std.h" +#include "hiscoa-common.h" +#include "hiscoa-compress.h" +#include "capt-command.h" +#include "capt-status.h" +#include "printer.h" + +#include + +void ops_send_band_hiscoa(struct printer_state_s *state, + const void *data, unsigned line_size, unsigned num_lines) +{ + const uint8_t *band_ptr; + size_t band_size; + void *band_buf = calloc(2 * line_size, num_lines); + if (! band_buf) + abort(); + + // FIXME + band_size = hiscoa_compress_band(band_buf, 2 * line_size * num_lines, + data, line_size, num_lines, + 0, &hiscoa_default_params); + + band_ptr = band_buf; + while (band_size) { + size_t send = 0xFF00; + if (send > band_size) + send = band_size; + state->isend += 1; + if (state->isend % 16 == 0) + capt_wait_ready(); + capt_send(CAPT_PRINT_DATA, band_ptr, band_size); + band_ptr += send; + band_size -= send; + } + + free(band_buf); +} diff --git a/src/generic-ops.h b/src/generic-ops.h new file mode 100644 index 0000000..8d7a914 --- /dev/null +++ b/src/generic-ops.h @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#pragma once + +#include "std.h" + +struct printer_state_s; + +void ops_send_band_hiscoa(struct printer_state_s *state, + const void *data, unsigned line_size, unsigned num_lines); diff --git a/src/hiscoa-common.c b/src/hiscoa-common.c new file mode 100644 index 0000000..318bbc1 --- /dev/null +++ b/src/hiscoa-common.c @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "hiscoa-common.h" + +#include "std.h" + +const struct hiscoa_params hiscoa_default_params = { + .origin_3 = 1, + .origin_5 = 4, + .origin_0 = 0, + .origin_2 = -7, + .origin_4 = 0, +}; diff --git a/src/hiscoa-common.h b/src/hiscoa-common.h new file mode 100644 index 0000000..67a6a33 --- /dev/null +++ b/src/hiscoa-common.h @@ -0,0 +1,37 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#pragma once + +#include "std.h" + +enum hiscoa_eob_type { + HISCOA_EOB_NORMAL = 0x0, + HISCOA_EOB_LAST = 0x01, +}; + +struct hiscoa_params { + int origin_3; + int origin_5; + int origin_0; + int origin_2; + int origin_4; +}; + +extern const struct hiscoa_params hiscoa_default_params; diff --git a/src/hiscoa-compress.c b/src/hiscoa-compress.c new file mode 100644 index 0000000..4ed1f22 --- /dev/null +++ b/src/hiscoa-compress.c @@ -0,0 +1,266 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "hiscoa-compress.h" + +#include "std.h" +#include "word.h" +#include "hiscoa-common.h" + +#include + +struct state { + const uint8_t xorval; + + const uint8_t *const input_buf; + const size_t input_size; + size_t input_pos; + + uint8_t *const output_buf; + const size_t output_bitsize; + unsigned bitpos; + + unsigned line_size; + + unsigned nbytes; + uint8_t bytes[16]; + + unsigned origin[6]; +}; + +static void push_bits(struct state *state, uint32_t bits, unsigned count) +{ + while (count && state->bitpos < state->output_bitsize) { + unsigned word = state->bitpos / 8; + unsigned spc = 8 - (state->bitpos % 8); + unsigned cnt = (count > spc) ? spc : count; + uint8_t mask = (0xFFu >> (8 - cnt)) << (spc - cnt); + uint32_t val = (bits >> (count - cnt)) << (spc - cnt); + uint8_t x = state->output_buf[word]; + x ^= state->xorval; + x &= ~mask; + x |= mask & val; + x ^= state->xorval; + state->output_buf[word] = x; + state->bitpos += cnt; + count -= cnt; + } +} + +static unsigned try_match(const struct state *state, unsigned diff) +{ + unsigned pos = state->input_pos; + if (pos < diff) + return 0; + while (state->input_buf[pos] == state->input_buf[pos - diff]) { + ++pos; + if (pos >= state->input_size) + break; + if (pos >= state->input_pos + 512 + 127) + break; + if (pos % state->line_size == 0) + break; + } + return pos - state->input_pos; +} + +static void swap(unsigned *a, unsigned *b) +{ + unsigned t = *a; + *a = *b; + *b = t; +} + +static unsigned find_msb(unsigned val) +{ + /* FIXME do this faster */ + unsigned nbits; + if (val == 0) + return 0; + for (nbits = 8 * sizeof(val) - 1; val < (1u << nbits); --nbits) + ; + return nbits + 1; +} + +static bool try_write_longrepeat(struct state *state) +{ + unsigned cmd; + unsigned best_cmd; + unsigned best_len = 0; + + for (cmd = 0; cmd < 6; ++cmd) { + if (state->origin[cmd]) { + unsigned len = try_match(state, state->origin[cmd]); + if (len > best_len) { + best_cmd = cmd; + best_len = len; + } + } + } + + if (best_len > 1) { + unsigned nbits; + unsigned len = best_len; + + if (len > 127) { + unsigned val = len / 128; + nbits = find_msb(val) - 1; + push_bits(state, 0xFC, 8); + push_bits(state, nbits, 2); + push_bits(state, ~val, nbits); + len %= 128; + } + + push_bits(state, 0xFFFFFFFE, best_cmd + 1); /* longrep */ + if (best_cmd == 2) + push_bits(state, 0x0, 1); /* subcommand 0 */ + + switch (len) { + case 0: + push_bits(state, 0x3F, 6); + break; + case 1: + push_bits(state, 0x0, 2); + break; + case 2: + push_bits(state, 0x3, 3); + break; + case 3: + push_bits(state, 0x2, 3); + break; + default: + nbits = find_msb(len) - 1; + push_bits(state, 0xFFFFFFFE, nbits); + push_bits(state, ~len, nbits); + break; + } + + if (best_cmd == 2) + swap(&state->origin[2], &state->origin[0]); + + if (best_cmd == 5) + swap(&state->origin[5], &state->origin[3]); + + state->input_pos += best_len; + return true; + } + + return false; +} + +static bool try_write_byterepeat(struct state *state) +{ + unsigned i; + for (i = 0; i < state->nbytes; ++i) { + uint8_t byte = state->input_buf[state->input_pos]; + if (byte == state->bytes[i]) { + unsigned j; + for (j = i; j > 0; --j) + state->bytes[j] = state->bytes[j - 1]; + state->bytes[0] = byte; + push_bits(state, 0x20 | ((15 - i) & 0xF), 6); + state->input_pos += 1; + return true; + } + } + return false; +} + +static void write_simple_byte(struct state *state) +{ + unsigned i; + uint8_t byte = state->input_buf[state->input_pos]; + + if (state->nbytes < 16) + state->nbytes += 1; + for (i = state->nbytes - 1; i > 0; --i) + state->bytes[i] = state->bytes[i - 1]; + state->bytes[0] = byte; + + if (byte == 0) { + push_bits(state, 0xFD, 8); /* zero */ + } else { + push_bits(state, 0xD00 | byte, 12); /* byte */ + } + state->input_pos += 1; +} + +size_t hiscoa_compress_band(void *buf, size_t size, + const void *band, unsigned line_size, unsigned nlines, + enum hiscoa_eob_type eob_type, + const struct hiscoa_params *params) +{ + struct state state = { + .xorval = 0x43, + + .input_buf = (const uint8_t *) band, + .input_size = line_size * nlines, + .input_pos = 0, + + .output_buf = (uint8_t *) buf, + .output_bitsize = 8 * size, + .bitpos = 0, + + .line_size = line_size, + + .nbytes = 0, + + .origin[1] = 0, + .origin[3] = params->origin_3, + .origin[5] = params->origin_5, + .origin[0] = params->origin_0 + line_size, + .origin[2] = params->origin_2 + line_size, + .origin[4] = params->origin_4, + }; + + while (state.input_pos < state.input_size) { + if (try_write_longrepeat(&state)) + continue; + if (try_write_byterepeat(&state)) + continue; + write_simple_byte(&state); + } + + push_bits(&state, 0xFE, 8); /* end */ + push_bits(&state, (unsigned) eob_type, 2); + //if (state.bitpos % 32) + push_bits(&state, 0xFFFFFFFF, 32 - (state.bitpos % 32)); + + return state.bitpos / 8; +} + + +size_t hiscoa_format_params(void *buf, size_t size, const struct hiscoa_params *params) +{ + uint8_t b[8] = { + (uint8_t) (int8_t) params->origin_3, + (uint8_t) (int8_t) params->origin_5, + 0x01, + 0x01, + (uint8_t) (int8_t) params->origin_0, + (uint8_t) (int8_t) params->origin_2, + LO((uint16_t) (int16_t) params->origin_4), + HI((uint16_t) (int16_t) params->origin_4), + }; + + if (size < sizeof(b)) + return 0; + memcpy(buf, b, sizeof(b)); + return sizeof(b); +} diff --git a/src/hiscoa-compress.h b/src/hiscoa-compress.h new file mode 100644 index 0000000..dbfac72 --- /dev/null +++ b/src/hiscoa-compress.h @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#pragma once + +#include "std.h" +#include "hiscoa-common.h" + +size_t hiscoa_compress_band(void *buf, size_t size, + const void *band, unsigned line_size, unsigned nlines, + enum hiscoa_eob_type eob_type, + const struct hiscoa_params *params); + +size_t hiscoa_format_params(void *buf, size_t size, + const struct hiscoa_params *params); diff --git a/src/paper.c b/src/paper.c new file mode 100644 index 0000000..70067d1 --- /dev/null +++ b/src/paper.c @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "paper.h" + + diff --git a/src/paper.h b/src/paper.h new file mode 100644 index 0000000..b617d4a --- /dev/null +++ b/src/paper.h @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#pragma once + +#include "std.h" + +struct page_dims_s { + /* set by */ + unsigned paper_width; + unsigned paper_height; + /* set by printer ops */ + unsigned line_size; + unsigned band_size; + unsigned num_lines; +}; diff --git a/src/printer.c b/src/printer.c new file mode 100644 index 0000000..ca70283 --- /dev/null +++ b/src/printer.c @@ -0,0 +1,156 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "printer.h" + +#include "std.h" +#include "capt-command.h" + +#include +#include +#include + +struct printer_rec { + struct printer_rec *next; + const char *name; + const struct printer_ops_s *ops; + enum printer_support state; +}; + +static struct printer_rec *printer_recs; + +static void __attribute__((constructor(101))) __init_printers(void) +{ + printer_recs = NULL; +} + +static void __attribute__((destructor(101))) __clear_printers(void) +{ + while (printer_recs) { + struct printer_rec *r = printer_recs; + printer_recs = r->next; + free(r); + } +} + +static bool ieee_isspace(char c) +{ + switch (c) { + case 0x20: + case 0x09: + case 0x0B: + case 0x0D: + case 0x0A: + case 0x0C: + return true; + default: + return false; + } +} + +static const struct printer_ops_s *find_ops(const char *model, size_t size) +{ + const struct printer_rec *r; + char mdl[size + 1]; + if (! size) { + fprintf(stderr, "ERROR: CAPT: printer model name is empty\n"); + return NULL; + } + memcpy(mdl, model, size); + mdl[size + 1] = '\0'; + fprintf(stderr, "DEBUG: CAPT: detected printer '%s'\n", mdl); + + for (r = printer_recs; r; r = r->next) { + if (! strcmp(r->name, mdl)) { + switch (r->state) { + case UNSUPPORTED: + fprintf(stderr, + "ERROR: printer %s is not supported by this driver\n", mdl); + exit(1); + case BROKEN: + fprintf(stderr, + "WARNING: support of %s is currently broken\n", mdl); + break; + case EXPERIMENTAL: + fprintf(stderr, + "WARNING: support of %s is experimental\n", mdl); + break; + default: + break; + } + fprintf(stderr, "DEBUG: CAPT: found ops for printer '%s'\n", mdl); + return r->ops; + } + } + + return NULL; +} + +void __printer_register_ops(const char *name, const struct printer_ops_s *ops, + enum printer_support state) +{ + struct printer_rec *r = malloc(sizeof(struct printer_rec)); + if (! r) + abort(); + r->name = name; + r->ops = ops; + r->state = state; + r->next = printer_recs; + printer_recs = r; +} + +const struct printer_ops_s *printer_detect(void) +{ + const char *ieee; + const char *pos; + const char *end; + ieee = capt_identify(); + pos = ieee; + for (; *pos && ieee_isspace(*pos); ++pos) + ; + end = pos + strlen(pos); + for (; end != ieee && ieee_isspace(*(end - 1)); --end) + ; + + while (pos != end) { + const char *delim; + const char *colon; + for (delim = pos; delim != end && *delim != ';'; ++delim) + ; + for (colon = pos; colon != delim && *colon != ':'; ++colon) + ; + if (colon != delim) { + size_t klen = colon - pos; + if ((klen == 5 && !memcmp(pos, "MODEL", 5)) + || (klen == 3 && !memcmp(pos, "MDL", 3))) { + const struct printer_ops_s *ret; + ret = find_ops(colon + 1, delim - colon - 1); + if (ret) + return ret; + break; + } + } + if (delim == end) + break; + pos = delim + 1; + } + + fprintf(stderr, "ERROR: CAPT: unknown printer '%s'\n", ieee); + exit(1); +} diff --git a/src/printer.h b/src/printer.h new file mode 100644 index 0000000..43ccfa9 --- /dev/null +++ b/src/printer.h @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#pragma once + +#include "std.h" + +enum printer_support { + UNSUPPORTED, + BROKEN, + EXPERIMENTAL, + WORKS, + FULLY, +}; + +struct page_dims_s; + +struct printer_state_s { + const struct printer_ops_s *ops; + unsigned ipage; + unsigned iband; + unsigned isend; +}; + +struct printer_ops_s { + struct printer_state_s * (*alloc_state) (void); + void (*free_state) (struct printer_state_s *state); + void (*job_prologue) (struct printer_state_s *state); + void (*job_epilogue) (struct printer_state_s *state); + void (*page_setup) (struct printer_state_s *state, + struct page_dims_s *dims, unsigned width, unsigned height); + void (*page_prologue) (struct printer_state_s *state, const struct page_dims_s *dims); + void (*page_epilogue) (struct printer_state_s *state, const struct page_dims_s *dims); + void (*send_band) (struct printer_state_s *state, + const void *band, unsigned line_size, unsigned num_lines); +}; + +const struct printer_ops_s *printer_detect(void); + + +void __printer_register_ops(const char *name, const struct printer_ops_s *ops, + enum printer_support status); + +#define ___concat(text, line) text##line +#define __printer_register_func(line) \ + ___concat(static void __register_printer_, line)(void) + +#define register_printer(mdl, ops, status) \ + __attribute__((constructor(150))) \ + __printer_register_func(__LINE__) \ + { __printer_register_ops(mdl, &ops, status); } \ + __printer_register_func(__LINE__) diff --git a/src/prn_lbp2900.c b/src/prn_lbp2900.c new file mode 100644 index 0000000..1ba3837 --- /dev/null +++ b/src/prn_lbp2900.c @@ -0,0 +1,179 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "std.h" +#include "word.h" +#include "capt-command.h" +#include "capt-status.h" +#include "generic-ops.h" +#include "hiscoa-common.h" +#include "hiscoa-compress.h" +#include "paper.h" +#include "printer.h" + +#include +#include +#include +#include +#include + +static const uint8_t magicbuf_0[] = { + 0x00, 0x00, 0x1E, 0x00, 0x00, 0x00, 0x00, 0x00 +}; + +static void send_job_start() +{ + uint16_t page = 1; // FIXME + uint8_t nl = 16; + uint8_t fg = 0x01; + uint16_t job = 1; + time_t rawtime = time(NULL); + const struct tm *tm = localtime(&rawtime); + uint8_t buf[32 + 64 + nl]; + uint8_t head[32] = { + 0x00, 0x00, 0x00, 0x00, LO(page), HI(page), 0x00, 0x00, + 0x10, 0x00, 0x0C, 0x00, nl, 0x00, 0x00, 0x00, + fg, 0x01, LO(job), HI(job), /*-60*/ 0xC4, 0xFF, /*-120*/ 0x88, 0xFF, + LO(tm->tm_year), HI(tm->tm_year), (uint8_t) tm->tm_mon, (uint8_t) tm->tm_mday, + (uint8_t) tm->tm_hour, (uint8_t) tm->tm_min, (uint8_t) tm->tm_sec, + 0x01, + }; + memcpy(buf, head, sizeof(head)); + memset(buf + 32, 0, 64 + nl); + capt_sendrecv(CAPT_JOB_SETUP, buf, sizeof(buf), NULL, 0); +} + +static const uint8_t magicbuf_2[] = { + 0xEE, 0xDB, 0xEA, 0xAD, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; + +static void wait_page(unsigned ipage) +{ + uint16_t pg; + const uint8_t *srec; + do { + capt_wait_ready(); + capt_get_xstatus(); + if (capt_get_status_size() < 20) { + fprintf(stderr, "ERROR: CAPT: printer returned only %u bytes of status\n", + capt_get_status_size()); + exit(1); + } + srec = capt_get_status_rec(); + pg = WORD(srec[18], srec[19]); + sleep(1); + } while (pg < ipage); +} + +static void lbp2900_job_prologue(struct printer_state_s *state) +{ + (void) state; + capt_sendrecv(CAPT_IDENT, NULL, 0, NULL, 0); + sleep(1); + capt_sendrecv(CAPT_CHKXSTATUS, NULL, 0, NULL, 0); + capt_get_xstatus(); + + capt_sendrecv(CAPT_START_0, NULL, 0, NULL, 0); + capt_sendrecv(CAPT_UPLOAD_0, magicbuf_0, ARRAY_SIZE(magicbuf_0), NULL, 0); + capt_wait_ready(); + send_job_start(); + capt_wait_ready(); + capt_sendrecv(CAPT_START_1, NULL, 0, NULL, 0); + capt_sendrecv(CAPT_START_2, NULL, 0, NULL, 0); + capt_sendrecv(CAPT_START_3, NULL, 0, NULL, 0); + capt_wait_ready(); + capt_sendrecv(CAPT_UPLOAD_2, magicbuf_2, ARRAY_SIZE(magicbuf_2), NULL, 0); + capt_wait_ready(); +} + +static void lbp2900_page_prologue(struct printer_state_s *state, const struct page_dims_s *dims) +{ + size_t s; + uint8_t buf[16]; + + uint8_t pt1 = 0x00; + uint8_t save = 0x00; + uint8_t pt2 = 0x01; + + uint8_t pageparms[] = { + 0x00, 0x00, 0x30, 0x2A, /* sz */ 0x02, 0x00, 0x00, 0x00, + 0x1F, 0x1F, 0x1F, 0x1F, pt1, 0x11, 0x04, 0x00, + 0x01, 0x01, 0x02, save, 0x00, 0x00, /*120*/ 0x78, 0x00, + /*96*/ 0x60, 0x00, + LO(dims->line_size), HI(dims->line_size), LO(dims->num_lines), HI(dims->num_lines), + LO(dims->paper_width), HI(dims->paper_width), + LO(dims->paper_height), HI(dims->paper_height), + /* 34 bytes */ + 0x00, 0x00, pt2, 0x00, 0x00, 0x00, + }; + + (void) state; + + /* TODO remove this */ + capt_debug_file = fopen("/tmp/capt-debug.bin", "w"); + + capt_multi_begin(CAPT_SET_PARMS); + capt_multi_add(CAPT_SET_PARM_PAGE, pageparms, sizeof(pageparms)); + s = hiscoa_format_params(buf, sizeof(buf), &hiscoa_default_params); + capt_multi_add(CAPT_SET_PARM_HISCOA, buf, s); + capt_multi_add(CAPT_SET_PARM_1, NULL, 0); + capt_multi_add(CAPT_SET_PARM_2, NULL, 0); + capt_multi_send(); +} + +static void lbp2900_page_epilogue(struct printer_state_s *state, const struct page_dims_s *dims) +{ + uint8_t buf[2] = { LO(state->ipage), HI(state->ipage) }; + (void) dims; + capt_sendrecv(CAPT_FIRE, buf, 2, NULL, 0); + wait_page(state->ipage); +} + +static void lbp2900_job_epilogue(struct printer_state_s *state) +{ + uint8_t buf[2] = { LO(state->ipage), HI(state->ipage) }; + capt_sendrecv(CAPT_JOB_END, buf, 2, NULL, 0); +} + +static void lbp2900_page_setup(struct printer_state_s *state, + struct page_dims_s *dims, + unsigned width, unsigned height) +{ + (void) state; + (void) width; + dims->band_size = 70; + dims->line_size = 592; + if (height > 6268) + dims->num_lines = 6268; + else + dims->num_lines = height; +} + +static struct printer_ops_s lbp2900_ops = { + .job_prologue = lbp2900_job_prologue, + .job_epilogue = lbp2900_job_epilogue, + .page_setup = lbp2900_page_setup, + .page_prologue = lbp2900_page_prologue, + .page_epilogue = lbp2900_page_epilogue, + .send_band = ops_send_band_hiscoa, +}; + +register_printer("LBP2900", lbp2900_ops, WORKS); +register_printer("LBP3000", lbp2900_ops, EXPERIMENTAL); diff --git a/src/rastertocapt.c b/src/rastertocapt.c new file mode 100644 index 0000000..c1cf75a --- /dev/null +++ b/src/rastertocapt.c @@ -0,0 +1,219 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "std.h" +#include "printer.h" +#include "paper.h" + +#include +#include +#include +#include +#include + +#include + + +static size_t center_pixels(size_t small, size_t large, unsigned bpp) +{ + unsigned small_p; + unsigned large_p; + unsigned bypp; + while (bpp % 8) + bpp *= 2; + bypp = bpp / 8; + small_p = small / bypp; + large_p = large / bypp; + return bypp * ((large_p - small_p) / 2); +} + +static void send_page_data(struct printer_state_s *state, + const struct page_dims_s *dims, + cups_raster_t *raster, + const struct cups_page_header2_s *header) +{ + const struct printer_ops_s *ops = state->ops; + uint8_t *linebuf = NULL; + uint8_t *bandbuf = NULL; + unsigned i; + + unsigned shiftb = 0; + unsigned shiftl = 0; + unsigned csize = header->cupsBytesPerLine; + + + if (header->cupsBytesPerLine < dims->line_size) { + csize = header->cupsBytesPerLine; + shiftb = center_pixels(header->cupsBytesPerLine, dims->line_size, + header->cupsBitsPerPixel); + } + + if (dims->line_size < header->cupsBytesPerLine) { + csize = dims->line_size; + shiftl = center_pixels(dims->line_size, header->cupsBytesPerLine, + header->cupsBitsPerPixel); + } + + if (header->cupsBytesPerLine > dims->line_size) + fprintf(stderr, "INFO: cutting line from %u to %u bytes\n", + header->cupsBytesPerLine, dims->line_size); + + if (header->cupsHeight > dims->num_lines) + fprintf(stderr, "INFO: cutting image from %u to %u lines\n", + header->cupsHeight, dims->num_lines); + + linebuf = calloc(1, header->cupsBytesPerLine); + if (! linebuf) + abort(); + bandbuf = calloc(dims->line_size, dims->band_size); + if (! bandbuf) + abort(); + + state->isend = 0; + + for (state->iband = 0; state->iband * dims->band_size < dims->num_lines; ++state->iband) { + unsigned start = state->iband * dims->band_size; + unsigned nlines = dims->band_size; + unsigned iline; + memset(bandbuf, 0, dims->line_size * dims->band_size); + if (nlines + start >= dims->num_lines) + nlines = dims->num_lines - start; + for (iline = 0; iline < nlines; ++iline) { + if (iline + start < header->cupsHeight) { + if (cupsRasterReadPixels(raster, linebuf, header->cupsBytesPerLine) + != header->cupsBytesPerLine) { + fprintf(stderr, "ERROR: CAPT: broken raster file\n"); + exit(1); + } + } else { + memset(linebuf, 0, header->cupsBytesPerLine); + } + memcpy(bandbuf + iline * dims->line_size + shiftb, linebuf + shiftl, csize); + } + ops->send_band(state, bandbuf, dims->line_size, nlines); + } + + /* discard end of image, if any */ + for (i = dims->num_lines; i < header->cupsHeight; ++i) + cupsRasterReadPixels(raster, linebuf, header->cupsBytesPerLine); + + if (bandbuf) + free(bandbuf); + if (linebuf) + free(linebuf); +} + + +static void do_print(int fd) +{ + struct cups_page_header2_s header; + const struct printer_ops_s *ops; + struct printer_state_s *state = NULL; + cups_raster_t *raster; + + ops = printer_detect(); + + if (ops->alloc_state) + state = ops->alloc_state(); + else + state = calloc(1, sizeof(struct printer_state_s)); + state->ops = ops; + state->ipage = 0; + + raster = cupsRasterOpen(fd, CUPS_RASTER_READ); + + fprintf(stderr, "DEBUG: CAPT: rastertocapt is rendering\n"); + + while (cupsRasterReadHeader2(raster, &header)) { + struct page_dims_s dims; + + // FIXME + dims.paper_width = 4960; + dims.paper_height = 6898; + + if (! state->ipage) { + fprintf(stderr, "DEBUG: CAPT: rastertocapt: start job\n"); + if (ops->job_prologue) + ops->job_prologue(state); + } + + state->ipage += 1; + + ops->page_setup(state, &dims, header.cupsWidth, header.cupsHeight); + + fprintf(stderr, "DEBUG: CAPT: rastertocapt: start page %u\n", state->ipage); + if (ops->page_prologue) + ops->page_prologue(state, &dims); + + fprintf(stderr, "DEBUG: CAPT: rastertocapt: sending page data\n"); + send_page_data(state, &dims, raster, &header); + + fprintf(stderr, "DEBUG: CAPT: rastertocapt: end page %u\n", state->ipage); + if (ops->page_epilogue) + ops->page_epilogue(state, &dims); + } + + if (state->ipage) { + fprintf(stderr, "DEBUG: CAPT: rastertocapt: end job\n"); + if (ops->job_epilogue) + ops->job_epilogue(state); + } + + if (! state->ipage) + fprintf(stderr, "ERROR: CAPT: no pages in job\n"); + + cupsRasterClose(raster); + + if (state) { + if (ops->free_state) + ops->free_state(state); + else + free(state); + state = NULL; + } +} + + +int main(int argc, char *argv[]) +{ + int fd = 0; + + if (argc < 6 || argc > 7) { + fprintf(stderr, "Usage: %s job-id user title copies options [file]\n", argv[0]); + return 1; + } + + if (argc == 7) { + fd = open(argv[6], O_RDONLY); + if (fd < 0) { + fprintf(stderr, "ERROR: unable to open %s: %s\n", argv[6], strerror(errno)); + return 1; + } + } + + fprintf(stderr, "DEBUG: CAPT: rastertocapt started\n"); + signal(SIGPIPE, SIG_IGN); + do_print(fd); + fprintf(stderr, "DEBUG: CAPT: rastertocapt finished\n"); + + if (argc == 7) + close(fd); + + return 0; +} diff --git a/src/std.h b/src/std.h new file mode 100644 index 0000000..25d8315 --- /dev/null +++ b/src/std.h @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#pragma once + +#include +#include +#include + +#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) + +#define debug true diff --git a/src/word.h b/src/word.h new file mode 100644 index 0000000..b8424a8 --- /dev/null +++ b/src/word.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2013 Alexey Galakhov + * + * Licensed under the GNU General Public License Version 3 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#pragma once + +#include "std.h" + +static inline uint8_t HI(uint16_t x) +{ + return (x >> 8) & 0xFF; +} + +static inline uint8_t LO(uint16_t x) +{ + return (x >> 0) & 0xFF; +} + +static inline uint16_t WORD(uint8_t lo, uint8_t hi) +{ + return ((hi & 0xFF) << 8) | ((lo & 0xFF) << 0); +} + +static inline uint16_t BCD(uint8_t lo, uint8_t hi) +{ + uint16_t a, b, c, d; + a = (hi >> 8) & 0x0F; + b = (hi >> 0) & 0x0F; + c = (lo >> 8) & 0x0F; + d = (lo >> 0) & 0x0F; + if (a > 9 || b > 9 || c > 9 || d > 9) + return WORD(lo, hi); + return a * 1000 + b * 100 + c * 10 + d * 1; +} diff --git a/tests/captdefilter.c b/tests/captdefilter.c new file mode 100644 index 0000000..b28ec3c --- /dev/null +++ b/tests/captdefilter.c @@ -0,0 +1,177 @@ + +#include "word.h" +#include "hiscoa-decompress.h" + +#include +#include +#include +#include +#include + +struct page { + size_t reserve; + size_t size; + uint8_t *data; +}; + +static struct page page; + +static unsigned line_size; +static struct hiscoa_params hiscoa_params; + +static uint8_t *page_reserve(size_t size) +{ + size_t reserve = page.reserve; + while (page.size + size > reserve) + reserve *= 2; + if (reserve != page.reserve) { + page.reserve = reserve; + page.data = realloc(page.data, page.reserve); + if (! page.data) + abort(); + } + return page.data + page.size; +} + +static void page_add(const uint8_t *buf, size_t size) +{ + memcpy(page_reserve(size), buf, size); + page.size += size; +} + +static void page_output(void) +{ + unsigned w = line_size * 8; + unsigned h = page.size / line_size; + printf("P4\n#\n%u %u\n", w, h); + fwrite(page.data, line_size, h, stdout); + fprintf(stderr, "output page %ux%u px\n", w, h); + page.size = 0; +} + +static void dump(const uint8_t *buf, size_t size) +{ + size_t i; + for (i = 1; i <= size; ++i) { + fprintf(stderr, " %02x", buf[i - 1]); + if (i % 16 == 0 || i == size) + fprintf(stderr, "\n"); + } +} + +static void decode_hiscoa_params(const uint8_t *buf, size_t size) +{ + hiscoa_params.origin_3 = (int8_t)buf[0]; + hiscoa_params.origin_5 = (int8_t)buf[1]; + /* buf[2] - ??? */ + /* buf[3] - ??? */ + hiscoa_params.origin_0 = (int8_t) buf[4]; /* ??? */ + hiscoa_params.origin_2 = (int8_t) buf[5]; + hiscoa_params.origin_4 = (int16_t) WORD(buf[6], buf[7]); +} + +static void decode_hiscoa_band(const uint8_t *buf, size_t size) +{ + unsigned lines = WORD(buf[2], buf[3]); + const uint8_t *src; + size_t srcsize; + uint8_t *dest; + size_t destsize = 0; + unsigned type; + src = buf + 4; + srcsize = size - 4; + hiscoa_decompress_band((const void **)&src, &srcsize, + NULL, &destsize, line_size, &hiscoa_params); + dest = page_reserve(destsize); + src = buf + 4; + srcsize = size - 4; + type = hiscoa_decompress_band((const void **)&src, &srcsize, + dest, &destsize, line_size, &hiscoa_params); + page.size += destsize; + fprintf(stderr, " eob = %u, lines = %u, expected bytes = %u\n", + type, lines, lines * line_size); + fprintf(stderr, " unconsumed size = %u, decompressed size = %u\n", + (unsigned) srcsize, (unsigned) destsize); +} + +static void dispatch(uint16_t cmd, const uint8_t *buf, size_t size) +{ + switch (cmd) { + case 0xD0A0: + fprintf(stderr, " -(compression parameters)-\n"); + dump(buf, size); + line_size = WORD(buf[26], buf[27]); + fprintf(stderr, " decoded: L=%u bytes, %u pixels\n", line_size, line_size * 8); + break; + case 0xD0A4: + fprintf(stderr, " -(Hi-SCoA parameters)-\n"); + dump(buf, size); + decode_hiscoa_params(buf, size); + fprintf(stderr, " decoded: [0]=%i+L [2]=%i+L [4]=%i [3]=%i [5]=%i\n", + hiscoa_params.origin_0, hiscoa_params.origin_2, + hiscoa_params.origin_4, + hiscoa_params.origin_3, hiscoa_params.origin_5); + break; + case 0xC0A0: + fprintf(stderr, " -(SCoA data)-\n"); + dump(buf, 16); + break; + case 0x8000: + fprintf(stderr, " -(Hi-SCoA data)-\n"); + dump(buf, 4); + decode_hiscoa_band(buf, size); + break; + case 0xC0A4: + fprintf(stderr, " --end--\n"); + page_output(); + break; + default: + dump(buf, size); + break; + } +} + +int main(int argc, char **argv) +{ + unsigned iband; + static uint8_t buf[1<<20]; + + FILE *input = stdin; + + if (argc > 1) { + input = fopen(argv[1], "r"); + if (! input) + abort(); + } + + page.reserve = 1024; + page.size = 0; + page.data = malloc(page.reserve); + if (! page.data) + abort(); + + while (1) { + int s; + uint16_t cmd; + uint16_t len; + s = fread(buf, 1, 4, input); + if (s == 0) + break; + if (s != 4) { + fprintf(stderr, "! unable to read header\n"); + break; + } + cmd = WORD(buf[0], buf[1]); + len = WORD(buf[2], buf[3]); + fprintf(stderr, "CMD %04X len=%u\n", cmd, len); + if (fread(buf + 4, 1, len - 4, input) != len - 4) { + fprintf(stderr, "! unable to read %u bytes\n"); + break; + } + dispatch(cmd, buf + 4, len - 4); + } + + if (argc > 1) + fclose(input); + return 0; +} diff --git a/tests/hiscoa-decompress.c b/tests/hiscoa-decompress.c new file mode 100644 index 0000000..fdcbd93 --- /dev/null +++ b/tests/hiscoa-decompress.c @@ -0,0 +1,208 @@ +#include "hiscoa-decompress.h" + +#include "std.h" +#include "hiscoa-common.h" + +struct state { + const uint8_t xorval; + const uint8_t *const input_buf; + const size_t input_size; + unsigned bitpos; + + uint8_t *const output_buf; + const size_t output_size; + size_t output_pos; + + unsigned prefix; + + uint8_t bytes[16]; + + unsigned origin_3; + unsigned origin_5; + unsigned origin_0; + unsigned origin_2; + unsigned origin_4; +}; + +static bool read_bit(struct state *state) +{ + bool ret; + if (state->bitpos / 8 >= state->input_size) + return true; + ret = !!((state->input_buf[state->bitpos / 8] ^ state->xorval) & + (0x80 >> (state->bitpos % 8))); + state->bitpos += 1; + return ret; +} + +static unsigned read_n10(struct state *state, unsigned limit) +{ + unsigned ret = 0; + while (ret < limit && read_bit(state)) + ++ret; + return ret; +} + +static unsigned read_number(struct state *state, unsigned bits) +{ + unsigned i; + unsigned ret = 0; + for (i = 0; i < bits; ++i) + ret = (ret << 1) | (read_bit(state) ? 1 : 0); + return ret; +} + +static unsigned read_long_number(struct state *state) +{ + unsigned order = read_n10(state, 6); + if (order == 6) + return 0; + if (order == 0) { + if (! read_bit(state)) + return 1; + return read_bit(state) ? 2 : 3; + } + return (1 << (order + 2)) - 1 - read_number(state, order + 1); +} + +static unsigned read_prefix(struct state *state) +{ + unsigned nbits = read_number(state, 2); + unsigned val = read_number(state, nbits); + return 128 * ((1 << (nbits + 1)) - 1 - val); +} + +static uint8_t save_byte(struct state *state, uint8_t byte) +{ + unsigned i; + for (i = 15; i > 0; --i) + state->bytes[i] = state->bytes[i - 1]; + state->bytes[0] = byte; + return byte; +} + +static uint8_t get_byte(struct state *state, unsigned pos) +{ + unsigned i; + uint8_t ret = state->bytes[pos]; + for (i = pos; i > 0; --i) + state->bytes[i] = state->bytes[i - 1]; + state->bytes[0] = ret; + return ret; +} + +static void swap(unsigned *a, unsigned *b) +{ + unsigned t = *a; + *a = *b; + *b = t; +} + +static inline void output_byte(struct state *state, uint8_t byte) +{ + if (state->output_buf && state->output_pos < state->output_size) + state->output_buf[state->output_pos] = byte; + state->output_pos += 1; +} + +static void copy_block(struct state *state, unsigned origin) +{ + unsigned len = state->prefix + read_long_number(state); + unsigned i; + for (i = 0; i < len; ++i) { + uint8_t byte = (state->output_buf + && state->output_pos >= origin + && state->output_pos - origin < state->output_size) + ? state->output_buf[state->output_pos - origin] : 0xCC; + output_byte(state, byte); + } +} + +unsigned hiscoa_decompress_band( + const void **band, size_t *size, + void *output, size_t *output_size, + unsigned line_size, + const struct hiscoa_params *params +) +{ + struct state state = { + .xorval = 0x43, + .input_buf = *(uint8_t **) band, + .input_size = size ? *size : (size_t) -1, + .bitpos = 0, + .output_buf = output, + .output_size = output_size ? *output_size : (size_t) -1, + .output_pos = 0, + .prefix = 0, + .bytes = { 0xDE, 0xAD, 0xBE, 0xEF, 0xDE, 0xAD, 0xBE, 0xFF, + 0xDE, 0xAD, 0xBE, 0xEF, 0xDE, 0xAD, 0xBE, 0xFF }, + + .origin_3 = params->origin_3, + .origin_5 = params->origin_5, + .origin_0 = params->origin_0 + line_size, + .origin_2 = params->origin_2 + line_size, + .origin_4 = params->origin_4, + }; + + unsigned ret; + bool end = false; + while (! end && state.bitpos < 8 * state.input_size) { + bool no_reset_prefix = false; + unsigned group = read_n10(&state, 8); + switch (group) { + case 0: + copy_block(&state, state.origin_0); + break; + case 1: + output_byte(&state, get_byte(&state, 15 - read_number(&state, 4))); + break; + case 2: + if (read_bit(&state)) { + output_byte(&state, save_byte(&state, read_number(&state, 8))); + } else { + copy_block(&state, state.origin_2); + swap(&state.origin_2, &state.origin_0); + } + break; + case 3: + copy_block(&state, state.origin_3); + break; + case 4: + copy_block(&state, state.origin_4); + break; + case 5: + copy_block(&state, state.origin_5); + swap(&state.origin_5, &state.origin_3); + break; + case 6: + if (read_bit(&state)) { + output_byte(&state, save_byte(&state, 0)); + } else { + state.prefix = read_prefix(&state); + no_reset_prefix = true; + } + break; + case 7: + ret = read_number(&state, 2); + end = true; + break; + case 8: + break; + } + if (! no_reset_prefix) + state.prefix = 0; + } + + while (state.bitpos % 32) + read_bit(&state); + + if (state.bitpos > 8 * state.input_size) + state.bitpos = 8 * state.input_size; + *(uint8_t **) band += state.bitpos / 8; + if (size) + *size -= state.bitpos / 8; + if (output_size) + *output_size = state.output_pos; + + return ret; +} diff --git a/tests/hiscoa-decompress.h b/tests/hiscoa-decompress.h new file mode 100644 index 0000000..24715f3 --- /dev/null +++ b/tests/hiscoa-decompress.h @@ -0,0 +1,11 @@ +#pragma once + +#include "std.h" +#include "hiscoa-common.h" + +unsigned hiscoa_decompress_band( + const void **band, size_t *size, + void *output, size_t *output_size, + unsigned line_size, + const struct hiscoa_params *params +); diff --git a/tests/test-hiscoa.c b/tests/test-hiscoa.c new file mode 100644 index 0000000..20aaeab --- /dev/null +++ b/tests/test-hiscoa.c @@ -0,0 +1,108 @@ +#include "std.h" +#include "hiscoa-compress.h" +#include "hiscoa-decompress.h" + +#include +#include +#include + +static const unsigned band_size = 70; + +static const struct hiscoa_params params = { + .origin_3 = 1, + .origin_5 = 4, + .origin_0 = 0, + .origin_2 = -12, + .origin_4 = 340, +}; + +int main(int argc, char **argv) +{ + FILE *input = stdin; + unsigned width, height; + char header[1024]; + unsigned bsize; + uint8_t *buf = NULL; + uint8_t *dcbuf = NULL; + uint8_t *bandbuf = NULL; + unsigned errors = 0; + + if (argc > 1) { + input = fopen(argv[1], "r"); + if (! input) + abort(); + } + + fscanf(input, "%s\n", header); + if (strcmp(header, "P4")) + abort(); + fscanf(input, "%s\n", header); + fscanf(input, "%u %u\n", &width, &height); + fprintf(stderr, "Input image dimensions: %ux%u\n", width, height); + + bsize = (width / 8) * band_size; + buf = calloc(1, bsize); + if (! buf) + abort(); + dcbuf = calloc(1, bsize); + if (! dcbuf) + abort(); + bandbuf = calloc(2, bsize); + if (! bandbuf) + abort(); + + while (1) { + bool bad = false; + ssize_t s = fread(buf, 1, bsize, input); + if (s < 0) + abort(); + if (s > 0) { + uint8_t *tmpb = bandbuf; + size_t tmps; + size_t dcsize = bsize; + unsigned code; + size_t bl = s / (width / 8); + size_t bs = hiscoa_compress_band(bandbuf, 2 * bsize, + buf, width / 8, bl, + (s < bsize) ? HISCOA_EOB_LAST : HISCOA_EOB_NORMAL, + ¶ms); + memset(dcbuf, 0xAA, bsize); + tmps = bs; + code = hiscoa_decompress_band((const void **)&tmpb, &tmps, + dcbuf, &dcsize, + width / 8, + ¶ms); + if (tmps) { + fprintf(stderr, "! band not fully decompressed: %u bytes left\n", + (unsigned) tmps); + bad = true; + } + if (memcmp(dcbuf, buf, dcsize)) { + fprintf(stderr, "! band compressed INCORRECTLY\n"); + bad = true; + } + if (dcsize != s) { + fprintf(stderr, "! band size incorrect: %u instead of %u\n", + (unsigned) dcsize, (unsigned) s); + bad = true; + } + if (bad) + errors += 1; + } + if (s < bsize) + break; + } + + fprintf(stderr, "FINISHED - %u errors\n", errors); + + if (bandbuf) + free(bandbuf); + if (dcbuf) + free(dcbuf); + if (buf) + free(buf); + + if (argc > 1) + fclose(input); + return errors ? 1 : 0; +}