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[libusb] Parse endpoints, as they vary from printer-to-printer.

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This commit is contained in:
Solomon Peachy 2012-11-05 19:23:02 -05:00
parent d9b46db070
commit 95adba9b87
1 changed files with 29 additions and 11 deletions
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40
es_print_libusb.c
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@ -73,11 +73,9 @@
#define USB_PID_CANON_CP810 0x3256
#define USB_PID_CANON_CP900 0x3255
#define ENDPOINT_UP 0x81
#define ENDPOINT_DOWN 0x02
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;
@ -95,7 +93,7 @@ static int dump_data_libusb(int remaining, int present, int data_fd,
present = 0;
}
i = libusb_bulk_transfer(dev, ENDPOINT_DOWN,
i = libusb_bulk_transfer(dev, endpoint,
buf,
cnt,
&num,
@ -124,6 +122,10 @@ 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;
int printer_type = P_END;
@ -292,15 +294,31 @@ found2:
goto done_close;
}
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;
}
}
goto done_close;
top:
/* Read in the printer status */
ret = libusb_bulk_transfer(dev, ENDPOINT_UP,
ret = libusb_bulk_transfer(dev, endp_up,
rdbuf,
READBACK_LEN,
&num,
2000);
if (ret < 0) {
fprintf(stderr, "libusb error (%d) (%d)\n", READBACK_LEN, num);
fprintf(stderr, "libusb error (%d) (%d)\n", ret, READBACK_LEN);
goto done_claimed;
}
@ -329,7 +347,7 @@ top:
fprintf(stderr, "Sending init sequence (%d bytes)\n", printers[printer_type].init_length);
/* Send printer init */
ret = libusb_bulk_transfer(dev, ENDPOINT_DOWN,
ret = libusb_bulk_transfer(dev, endp_down,
buffer,
printers[printer_type].init_length,
&num,
@ -355,7 +373,7 @@ top:
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, buffer, BUF_LEN);
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:
@ -368,7 +386,7 @@ top:
break;
case S_PRINTER_READY_M:
fprintf(stderr, "Sending MAGENTA plane\n");
dump_data(plane_len, 0, data_fd, dev, buffer, BUF_LEN);
dump_data(plane_len, 0, data_fd, dev, endp_down, buffer, BUF_LEN);
state = S_PRINTER_M_SENT;
break;
case S_PRINTER_M_SENT:
@ -378,7 +396,7 @@ top:
break;
case S_PRINTER_READY_C:
fprintf(stderr, "Sending CYAN plane\n");
dump_data(plane_len, 0, data_fd, dev, buffer, BUF_LEN);
dump_data(plane_len, 0, data_fd, dev, endp_down, buffer, BUF_LEN);
state = S_PRINTER_C_SENT;
break;
case S_PRINTER_C_SENT:
@ -389,7 +407,7 @@ top:
case S_PRINTER_DONE:
if (printers[printer_type].foot_length) {
fprintf(stderr, "Sending cleanup sequence\n");
dump_data(printers[printer_type].foot_length, 0, data_fd, dev, buffer, BUF_LEN);
dump_data(printers[printer_type].foot_length, 0, data_fd, dev, endp_down, buffer, BUF_LEN);
}
state = S_FINISHED;
break;