selphy_print/es_print_libusb.c

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/*
* Canon SELPHY ES series print assister
*
* (c) 2007-2012 Solomon Peachy <pizza@shaftnet.org>
*
* The SELPHY ES-series printers from Canon requires intelligent buffering
* of the raw spool data in order to keep the printer from locking up.
*
* Known supported printers:
*
* SELPHY ES1, SELPHY ES2, SELPHY ES30
*
* Supported but untested:
*
* SELPHY ES20, SELPHY ES3
* SELPHY CP-760 and all other CP-series printers EXCEPT for CP-790
*
* NOT currently supported:
*
* SELPHY ES40, CP-790
* (They use different stream formats, and may have different readbacks;
* I will update this as needed and as I get hardware to test..)
*
* The latest version of this program can be found at:
*
* http://www.shaftnet.org/users/pizza/es_print_assist.c
*
* 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]
*
*/
// Compile with gcc -o es_print es_print_libusb.c -lusb-1.0 -Wall
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#define VERSION "0.20"
#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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/* USB Identifiers */
#define USB_VID_CANON 0x04a9
#define USB_PID_CANON_ES1 0x3141
#define USB_PID_CANON_ES2 0x3185
#define USB_PID_CANON_ES20 1 // XXX
#define USB_PID_CANON_ES3 2 // XXX
#define USB_PID_CANON_ES30 0x31B0
#define USB_PID_CANON_ES40 4 // XXX
#define USB_PID_CANON_CP790 5 // XXX
#define USB_PID_CANON_CP_XXX 6 // XXX
#define ENDPOINT_UP 0x81
#define ENDPOINT_DOWN 0x02
#define BUF_LEN 4096
static int dump_data_libusb (int remaining, int present, int data_fd,
struct libusb_device_handle *dev,
uint8_t *buf, uint16_t buflen, uint16_t packet_size) {
int cnt;
int i;
int wrote;
int num;
while (remaining > 0) {
cnt = read(data_fd, buf + present, (remaining < (buflen-present)) ? remaining : (buflen-present));
if (present)
present = 0;
if (cnt < 0)
return -1;
if (cnt < packet_size)
cnt = packet_size;
i = libusb_bulk_transfer(dev, ENDPOINT_DOWN,
buf,
cnt,
&num,
2000);
if (i < 0) {
fprintf(stderr, "libusb error(%d)\n", 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;
int printer_type = P_END;
int iface = 0;
// int packet_size = 64;
int packet_size = 1;
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int num, i;
int ret = 0;
int claimed;
uint8_t rdbuf[RDBUF_LEN], rdbuf2[RDBUF_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 Print Assist version %s\n\nUsage:\n\t%s infile\n",
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);
if (buffer[0] != 0x40 &&
buffer[1] != 0x00) {
fprintf(stderr, "Unrecognized file format!\n");
return(-1);
}
if (buffer[12] == 0x40 &&
buffer[13] == 0x01) {
if (buffer[2] == 0x00) {
printer_type = P_CP_XXX; /* Unpadded */
} else {
printer_type = P_ES1;
bw_mode = (buffer[2] == 0x20);
}
plane_len = *(uint32_t*)(&buffer[16]);
plane_len = cpu_to_le32(plane_len);
goto found;
}
plane_len = cpu_to_le32(plane_len);
plane_len = *(uint32_t*)(&buffer[12]);
if (buffer[16] == 0x40 &&
buffer[17] == 0x01) {
if (buffer[4] == 0x02) {
printer_type = P_ES2_20;
bw_mode = (buffer[7] == 0x01);
goto found;
}
if (es40_plane_lengths[buffer[2]] == plane_len) {
printer_type = P_ES40;
bw_mode = (buffer[3] == 0x01);
goto found;
} else {
printer_type = P_ES3_30;
bw_mode = (buffer[3] == 0x01);
goto found;
}
}
fprintf(stderr, "Unrecognized file format!\n");
return -1;
found:
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fprintf(stderr, "File intended for a '%s' printer %s\r\n", models[printer_type], bw_mode? "B/W" : "");
plane_len += 12; /* Add in plane header */
paper_code_offset = paper_code_offsets[printer_type];
if (paper_code_offset != -1)
paper_code = paper_codes[printer_type][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)
goto found2;
break;
case USB_PID_CANON_CP_XXX:
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;
fprintf(stderr, "No suitable printers found (looking for %s)\n", models[printer_type]);
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goto done;
}
found2:
#if 0
// XXX pull interface list, and make sure we have the right one.
// XXX validate packet_size
if (interface.bInterfaceClass != LIBUSB_CLASS_PRINTER)
continue;
#endif
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fprintf(stderr, "Found a %s printer\r\n", models[printer_type]);
ret = libusb_open(list[i], &dev);
if (ret) {
fprintf(stderr, "Could not open device (Need to be root?) (%d)\r\n", ret);
goto done;
}
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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);
goto done;
}
}
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ret = libusb_claim_interface(dev, iface);
if (ret) {
fprintf(stderr, "Could not claim printer interface (%d)\r\n", ret);
goto done;
}
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top:
/* Read in the printer status */
ret = libusb_bulk_transfer(dev, ENDPOINT_UP,
rdbuf,
RDBUF_LEN,
&num,
2000);
if (ret < 0) {
fprintf(stderr, "libusb error (%d)\n", ret);
goto done;
}
if (memcmp(rdbuf, rdbuf2, RDBUF_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]);
memcpy(rdbuf2, rdbuf, RDBUF_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:
if (!fancy_memcmp(rdbuf, init_readbacks[printer_type], RDBUF_LEN, paper_code_offset, paper_code)) {
state = S_PRINTER_READY;
}
break;
case S_PRINTER_READY:
fprintf(stderr, "Sending init sequence (%d bytes)\n", init_lengths[printer_type]);
/* Send printer init */
ret = libusb_bulk_transfer(dev, ENDPOINT_DOWN,
buffer,
( init_lengths[printer_type] < packet_size ? packet_size : init_lengths[printer_type]),
// init_lengths[printer_type],
&num,
2000);
if (ret < 0) {
fprintf(stderr, "libusb error (%d) (%d)\n", ret, num);
goto done;
}
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/* Realign plane data to start of buffer.. */
memmove(buffer, buffer+init_lengths[printer_type],
MAX_HEADER-init_lengths[printer_type]);
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state = S_PRINTER_INIT_SENT;
break;
case S_PRINTER_INIT_SENT:
if (!fancy_memcmp(rdbuf, ready_y_readbacks[printer_type], RDBUF_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_libusb(plane_len, MAX_HEADER-init_lengths[printer_type], data_fd, dev, buffer, BUF_LEN, packet_size);
state = S_PRINTER_Y_SENT;
break;
case S_PRINTER_Y_SENT:
if (!fancy_memcmp(rdbuf, ready_m_readbacks[printer_type], RDBUF_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_libusb(plane_len, 0, data_fd, dev, buffer, BUF_LEN, packet_size);
state = S_PRINTER_M_SENT;
break;
case S_PRINTER_M_SENT:
if (!fancy_memcmp(rdbuf, ready_c_readbacks[printer_type], RDBUF_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_libusb(plane_len, 0, data_fd, dev, buffer, BUF_LEN, packet_size);
state = S_PRINTER_C_SENT;
break;
case S_PRINTER_C_SENT:
if (!fancy_memcmp(rdbuf, done_c_readbacks[printer_type], RDBUF_LEN, paper_code_offset, paper_code)) {
state = S_PRINTER_DONE;
}
break;
case S_PRINTER_DONE:
if (foot_lengths[printer_type]) {
fprintf(stderr, "Sending cleanup sequence\n");
dump_data_libusb(foot_lengths[printer_type], 0, data_fd, dev, buffer, BUF_LEN, packet_size);
}
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 */
libusb_release_interface(dev, iface);
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if (claimed)
libusb_attach_kernel_driver(dev, iface);
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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;
}