selphy_print/es_print_libusb.c

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/*
* Canon SELPHY ES/CP series print assister -- libusb-1.0 version
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*
* (c) 2007-2012 Solomon Peachy <pizza@shaftnet.org>
*
* The latest version of this program can be found at:
*
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* http://git.shaftnet.org/git/gitweb.cgi?p=selphy_print.git
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*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* [http://www.gnu.org/licenses/gpl-3.0.html]
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
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#include <libusb-1.0/libusb.h>
#include "es_print_common.h"
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#define dump_data dump_data_libusb
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/* USB Identifiers */
#define USB_VID_CANON 0x04a9
#define USB_PID_CANON_ES1 0x3141
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#define USB_PID_CANON_ES2 0x3185
#define USB_PID_CANON_ES20 20 // XXX
#define USB_PID_CANON_ES3 3 // XXX
#define USB_PID_CANON_ES30 0x31B0
#define USB_PID_CANON_ES40 0x31EE
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#define USB_PID_CANON_CP10 0x304A
#define USB_PID_CANON_CP100 0x3063
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#define USB_PID_CANON_CP200 200 // XXX - maybe incoming
#define USB_PID_CANON_CP220 0x30BD
#define USB_PID_CANON_CP300 0x307D
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#define USB_PID_CANON_CP330 0x30BE // - incoming
#define USB_PID_CANON_CP400 0x30F6 // - incoming
#define USB_PID_CANON_CP500 500 // XXX
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#define USB_PID_CANON_CP510 510 // XXX - incoming
#define USB_PID_CANON_CP520 520 // XXX
#define USB_PID_CANON_CP530 530 // XXX
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#define USB_PID_CANON_CP600 0x310B
#define USB_PID_CANON_CP710 710 // XXX
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#define USB_PID_CANON_CP720 0x3143
#define USB_PID_CANON_CP730 730 // XXX
#define USB_PID_CANON_CP740 0x3171
#define USB_PID_CANON_CP750 750 // XXX
#define USB_PID_CANON_CP760 0x31AB
#define USB_PID_CANON_CP770 770 // XXX - maybe incoming
#define USB_PID_CANON_CP780 780 // XXX - incoming
#define USB_PID_CANON_CP790 790 // XXX
#define USB_PID_CANON_CP800 0x3214
#define USB_PID_CANON_CP810 0x3256
#define USB_PID_CANON_CP900 0x3255
static int dump_data_libusb(int remaining, int present, int data_fd,
struct libusb_device_handle *dev,
uint8_t endpoint,
uint8_t *buf, uint16_t buflen) {
int cnt;
int i;
int wrote;
int num;
while (remaining > 0) {
cnt = read(data_fd, buf + present, (remaining < (buflen-present)) ? remaining : (buflen-present));
if (cnt < 0)
return -1;
if (present) {
cnt += present;
present = 0;
}
i = libusb_bulk_transfer(dev, endpoint,
buf,
cnt,
&num,
2000);
if (i < 0) {
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fprintf(stderr, "libusb xfer (%d) error: %d\n", cnt, i);
return -1;
}
if (num != cnt) {
/* Realign buffer.. */
present = cnt - num;
memmove(buf, buf + num, present);
}
wrote += num;
remaining -= num;
}
fprintf(stderr, "Wrote %d bytes\n", wrote);
return wrote;
}
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int main (int argc, char **argv)
{
struct libusb_context *ctx;
struct libusb_device **list;
struct libusb_device_handle *dev;
struct libusb_config_descriptor *config;
uint8_t endp_up = 0;
uint8_t endp_down = 0;
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int printer_type = P_END;
int iface = 0;
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int num, i;
int ret = 0;
int claimed;
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uint8_t rdbuf[READBACK_LEN], rdbuf2[READBACK_LEN];
int last_state = -1, state = S_IDLE;
int plane_len = 0;
int bw_mode = 0;
int16_t paper_code_offset = -1;
int16_t paper_code = -1;
uint8_t buffer[BUF_LEN];
int data_fd = fileno(stdin);
/* Static initialization */
setup_paper_codes();
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/* Cmdline help */
if (argc < 2) {
fprintf(stderr, "SELPHY ES/CP Print Assist version %s\n\nUsage:\n\t%s [ infile | - ]\n",
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VERSION,
argv[0]);
fprintf(stderr, "\n");
exit(1);
}
/* Open Input File */
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if (strcmp("-", argv[1])) {
data_fd = open(argv[1], O_RDONLY);
if (data_fd < 0) {
perror("Can't open input file");
exit(1);
}
}
/* Figure out printer this file is intended for */
read(data_fd, buffer, MAX_HEADER);
printer_type = parse_printjob(buffer, &bw_mode, &plane_len);
if (printer_type < 0) {
return(-1);
}
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fprintf(stderr, "File intended for a '%s' printer %s\r\n", printers[printer_type].model, bw_mode? "B/W" : "");
plane_len += 12; /* Add in plane header */
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paper_code_offset = printers[printer_type].paper_code_offset;
if (paper_code_offset != -1)
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paper_code = printers[printer_type].paper_codes[paper_code_offset];
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/* Libusb setup */
libusb_init(&ctx);
/* Enumerate and find suitable device */
num = libusb_get_device_list(ctx, &list);
for (i = 0 ; i < num ; i++) {
struct libusb_device_descriptor desc;
libusb_get_device_descriptor(list[i], &desc);
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if (desc.idVendor != USB_VID_CANON)
continue;
switch(desc.idProduct) {
case USB_PID_CANON_ES1:
if (printer_type == P_ES1)
goto found2;
break;
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case USB_PID_CANON_ES2:
case USB_PID_CANON_ES20:
if (printer_type == P_ES2_20)
goto found2;
break;
case USB_PID_CANON_ES3:
case USB_PID_CANON_ES30:
if (printer_type == P_ES3_30)
goto found2;
break;
case USB_PID_CANON_ES40:
case USB_PID_CANON_CP790:
if (printer_type == P_ES40_CP790)
goto found2;
break;
case USB_PID_CANON_CP900:
/* XXX deliberate. no way to distinguish P_CP900 based
on a streamed-in print job */
if (printer_type == P_CP_XXX)
goto found2;
break;
case USB_PID_CANON_CP10:
case USB_PID_CANON_CP100:
case USB_PID_CANON_CP200:
case USB_PID_CANON_CP220:
case USB_PID_CANON_CP300:
case USB_PID_CANON_CP330:
case USB_PID_CANON_CP400:
case USB_PID_CANON_CP500:
case USB_PID_CANON_CP510:
case USB_PID_CANON_CP520:
case USB_PID_CANON_CP530:
case USB_PID_CANON_CP600:
case USB_PID_CANON_CP710:
case USB_PID_CANON_CP720:
case USB_PID_CANON_CP730:
case USB_PID_CANON_CP740:
case USB_PID_CANON_CP750:
case USB_PID_CANON_CP760:
case USB_PID_CANON_CP770:
case USB_PID_CANON_CP780:
case USB_PID_CANON_CP800:
case USB_PID_CANON_CP810:
if (printer_type == P_CP_XXX)
goto found2;
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break;
default:
fprintf(stderr, "Found Unrecognized Canon Printer: %04x\n",
desc.idProduct);
break;
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}
}
if (i == num) {
ret = 1;
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fprintf(stderr, "No suitable printers found (looking for %s)\n", printers[printer_type].model);
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goto done;
}
found2:
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fprintf(stderr, "Found a %s printer\r\n", printers[printer_type].model);
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ret = libusb_open(list[i], &dev);
if (ret) {
fprintf(stderr, "Could not open device (Need to be root?) (%d)\r\n", ret);
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goto done_close;
}
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claimed = libusb_kernel_driver_active(dev, iface);
if (claimed) {
ret = libusb_detach_kernel_driver(dev, iface);
if (ret) {
fprintf(stderr, "Could not detach printer from kernel (%d)\r\n", ret);
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goto done_close;
}
}
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ret = libusb_claim_interface(dev, iface);
if (ret) {
fprintf(stderr, "Could not claim printer interface (%d)\r\n", ret);
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goto done_close;
}
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ret = libusb_get_active_config_descriptor(list[i], &config);
if (ret) {
fprintf(stderr, "Could not fetch config descriptor (%d)\r\n", ret);
goto done_close;
}
for (i = 0 ; i < config->interface[0].altsetting[0].bNumEndpoints ; i++) {
if ((config->interface[0].altsetting[0].endpoint[i].bmAttributes & 3) == LIBUSB_TRANSFER_TYPE_BULK) {
if (config->interface[0].altsetting[0].endpoint[i].bEndpointAddress & LIBUSB_ENDPOINT_IN)
endp_up = config->interface[0].altsetting[0].endpoint[i].bEndpointAddress;
else
endp_down = config->interface[0].altsetting[0].endpoint[i].bEndpointAddress;
}
}
top:
/* Read in the printer status */
ret = libusb_bulk_transfer(dev, endp_up,
rdbuf,
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READBACK_LEN,
&num,
2000);
if (ret < 0) {
fprintf(stderr, "libusb error (%d) (%d)\n", ret, READBACK_LEN);
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goto done_claimed;
}
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if (memcmp(rdbuf, rdbuf2, READBACK_LEN)) {
fprintf(stderr, "readback: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
rdbuf[0], rdbuf[1], rdbuf[2], rdbuf[3],
rdbuf[4], rdbuf[5], rdbuf[6], rdbuf[7],
rdbuf[8], rdbuf[9], rdbuf[10], rdbuf[11]);
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memcpy(rdbuf2, rdbuf, READBACK_LEN);
} else {
sleep(1);
}
if (state != last_state) {
fprintf(stderr, "last_state %d new %d\n", last_state, state);
last_state = state;
}
fflush(stderr);
switch(state) {
case S_IDLE:
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if (!fancy_memcmp(rdbuf, printers[printer_type].init_readback, READBACK_LEN, paper_code_offset, paper_code)) {
state = S_PRINTER_READY;
}
break;
case S_PRINTER_READY:
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fprintf(stderr, "Sending init sequence (%d bytes)\n", printers[printer_type].init_length);
/* Send printer init */
ret = libusb_bulk_transfer(dev, endp_down,
buffer,
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printers[printer_type].init_length,
&num,
2000);
if (ret < 0) {
fprintf(stderr, "libusb error (%d) (%d)\n", ret, num);
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goto done_claimed;
}
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/* Realign plane data to start of buffer.. */
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memmove(buffer, buffer+printers[printer_type].init_length,
MAX_HEADER-printers[printer_type].init_length);
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state = S_PRINTER_INIT_SENT;
break;
case S_PRINTER_INIT_SENT:
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if (!fancy_memcmp(rdbuf, printers[printer_type].ready_y_readback, READBACK_LEN, paper_code_offset, paper_code)) {
state = S_PRINTER_READY_Y;
}
break;
case S_PRINTER_READY_Y:
if (bw_mode)
fprintf(stderr, "Sending BLACK plane\n");
else
fprintf(stderr, "Sending YELLOW plane\n");
dump_data(plane_len, MAX_HEADER-printers[printer_type].init_length, data_fd, dev, endp_down, buffer, BUF_LEN);
state = S_PRINTER_Y_SENT;
break;
case S_PRINTER_Y_SENT:
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if (!fancy_memcmp(rdbuf, printers[printer_type].ready_m_readback, READBACK_LEN, paper_code_offset, paper_code)) {
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if (bw_mode)
state = S_PRINTER_DONE;
else
state = S_PRINTER_READY_M;
}
break;
case S_PRINTER_READY_M:
fprintf(stderr, "Sending MAGENTA plane\n");
dump_data(plane_len, 0, data_fd, dev, endp_down, buffer, BUF_LEN);
state = S_PRINTER_M_SENT;
break;
case S_PRINTER_M_SENT:
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if (!fancy_memcmp(rdbuf, printers[printer_type].ready_c_readback, READBACK_LEN, paper_code_offset, paper_code)) {
state = S_PRINTER_READY_C;
}
break;
case S_PRINTER_READY_C:
fprintf(stderr, "Sending CYAN plane\n");
dump_data(plane_len, 0, data_fd, dev, endp_down, buffer, BUF_LEN);
state = S_PRINTER_C_SENT;
break;
case S_PRINTER_C_SENT:
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if (!fancy_memcmp(rdbuf, printers[printer_type].done_c_readback, READBACK_LEN, paper_code_offset, paper_code)) {
state = S_PRINTER_DONE;
}
break;
case S_PRINTER_DONE:
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if (printers[printer_type].foot_length) {
fprintf(stderr, "Sending cleanup sequence\n");
dump_data(printers[printer_type].foot_length, 0, data_fd, dev, endp_down, buffer, BUF_LEN);
}
state = S_FINISHED;
break;
case S_FINISHED:
fprintf(stderr, "All data sent to printer!\n");
break;
}
if (state != S_FINISHED)
goto top;
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/* Done printing */
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done_claimed:
libusb_release_interface(dev, iface);
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if (claimed)
libusb_attach_kernel_driver(dev, iface);
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done_close:
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libusb_close(dev);
done:
libusb_free_device_list(list, 1);
libusb_exit(ctx);
close(data_fd);
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return ret;
}