dsp_ds40: Initial pass at a backend.
As far as a backend is concerned, it's just a passthrough. However, it has command-line options.master
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/*
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* DNP DS40/DS80 Photo Printer CUPS backend -- libusb-1.0 version
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*
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* (c) 2013 Solomon Peachy <pizza@shaftnet.org>
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*
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* The latest version of this program can be found at:
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*
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* http://git.shaftnet.org/cgit/selphy_print.git
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 3 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* [http://www.gnu.org/licenses/gpl-3.0.html]
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <signal.h>
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#include "backend_common.h"
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#define USB_VID_DNP 0x1343
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#define USB_PID_DNP_DS40 0x0003
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/* Private data stucture */
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struct dnpds40_ctx {
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struct libusb_device_handle *dev;
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uint8_t endp_up;
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uint8_t endp_down;
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int type;
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uint8_t *databuf;
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int datalen;
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};
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struct dnpds40_cmd {
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uint8_t esc;
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uint8_t p;
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uint8_t arg1[6];
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uint8_t arg2[16];
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uint8_t arg3[8]; /* Decimal value of arg4's length, or empty */
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/* All unused elements are set to ' ' (ie ascii space) */
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};
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#define DS40_CMD_LEN 32
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#define min(__x, __y) ((__x) < (__y)) ? __x : __y
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static void dnpds40_build_cmd(struct dnpds40_cmd *cmd, char *arg1, char *arg2, uint32_t arg3_len)
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{
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memset(cmd, 0x20, sizeof(*cmd));
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cmd->esc = 0x1b;
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cmd->p = 0x50;
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memcpy(cmd->arg1, arg1, min(strlen(arg1), sizeof(cmd->arg1)));
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memcpy(cmd->arg2, arg2, min(strlen(arg2), sizeof(cmd->arg2)));
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if (arg3_len)
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snprintf((char*)cmd->arg3, 8, "%08d", arg3_len);
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}
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static void dnpds40_cleanup_string(char *start, int len)
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{
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char *ptr = strchr(start, 0x0d);
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if (ptr)
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*ptr = 0x00; /* If there is a <CR>, terminate there */
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else
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*(start + len - 1) = 0x00; /* force null-termination */
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}
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static char *dnpds40_media_types(char *str)
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{
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char tmp[4];
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int i;
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memcpy(tmp, str + 4, 3);
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tmp[3] = 0;
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i = atoi(tmp);
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switch (i) {
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case 200: return "5x3.5 (L)";
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case 210: return "5x7 (2L)";
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case 300: return "6x4 (PC)";
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case 310: return "6x8 (A5)";
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case 400: return "6x9 (A5W)";
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case 500: return "8x10";
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case 510: return "8x12";
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default:
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break;
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}
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return "Unknown type";
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}
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static void *dnpds40_init(void)
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{
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struct dnpds40_ctx *ctx = malloc(sizeof(struct dnpds40_ctx));
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if (!ctx)
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return NULL;
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memset(ctx, 0, sizeof(struct dnpds40_ctx));
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ctx->type = P_ANY;
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return ctx;
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}
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static void dnpds40_attach(void *vctx, struct libusb_device_handle *dev,
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uint8_t endp_up, uint8_t endp_down, uint8_t jobid)
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{
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struct dnpds40_ctx *ctx = vctx;
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struct libusb_device *device;
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struct libusb_device_descriptor desc;
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UNUSED(jobid);
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ctx->dev = dev;
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ctx->endp_up = endp_up;
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ctx->endp_down = endp_down;
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device = libusb_get_device(dev);
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libusb_get_device_descriptor(device, &desc);
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/* Map out device type */
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if (desc.idProduct == USB_PID_DNP_DS40)
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ctx->type = P_DNP_DS40;
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else
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ctx->type = P_DNP_DS80;
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}
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static void dnpds40_teardown(void *vctx) {
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struct dnpds40_ctx *ctx = vctx;
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if (!ctx)
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return;
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if (ctx->databuf)
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free(ctx->databuf);
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free(ctx);
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}
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#define MAX_PRINTJOB_LEN (27927714+1024) // Add a little bit of padding
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#define READBACK_LEN 1024
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static int dnpds40_read_parse(void *vctx, int data_fd) {
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struct dnpds40_ctx *ctx = vctx;
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int i;
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if (!ctx)
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return 1;
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ctx->databuf = malloc(MAX_PRINTJOB_LEN);
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if (!ctx->databuf) {
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ERROR("Memory allocation failure!\n");
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return 2;
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}
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while((i = read(data_fd, ctx->databuf + ctx->datalen, 4096)) > 0) {
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ctx->datalen += i;
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}
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return 0;
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}
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static int dnpds40_main_loop(void *vctx, int copies) {
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struct dnpds40_ctx *ctx = vctx;
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int ret;
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if (!ctx)
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return 1;
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// XXX printer probably supports making copies.
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while (copies--) {
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DEBUG("Sending %d bytes to printer\n", ctx->datalen);
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if ((ret = send_data(ctx->dev, ctx->endp_down,
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ctx->databuf, ctx->datalen)))
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return ret;
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INFO("Print complete (%d remaining)\n", copies);
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}
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/* Just dump the whole damn thing over */
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return 0;
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}
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static int dnpds40_get_info(struct dnpds40_ctx *ctx)
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{
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struct dnpds40_cmd cmd;
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uint8_t rdbuf[READBACK_LEN];
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char tmp[9];
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int ret, i, num = 0;
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/* Get Firmware Version */
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dnpds40_build_cmd(&cmd, "INFO", "FVER", 0);
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if ((ret = send_data(ctx->dev, ctx->endp_down,
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(uint8_t*)&cmd, sizeof(cmd))))
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return ret;
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/* Read in the response */
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memset(rdbuf, 0, sizeof(rdbuf));
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ret = libusb_bulk_transfer(ctx->dev, ctx->endp_up,
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rdbuf,
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READBACK_LEN,
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&num,
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5000);
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if (ret < 0 || num < 8) {
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ERROR("Failure to receive data from printer (libusb error %d: (%d/%d from 0x%02x))\n", ret, num, (int)sizeof(rdbuf), ctx->endp_up);
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if (ret < 0)
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return ret;
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return 4;
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}
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memcpy(tmp, rdbuf, 8);
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tmp[8] = 0;
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i = atoi(tmp); /* Length of payload in bytes, possibly padded */
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dnpds40_cleanup_string((char*)rdbuf + 8, i);
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INFO("Firmware Version: %s\n", (char*)rdbuf + 8);
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/* *************************** */
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/* Get Sensor Info */
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dnpds40_build_cmd(&cmd, "INFO", "SENSOR", 0);
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if ((ret = send_data(ctx->dev, ctx->endp_down,
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(uint8_t*)&cmd, sizeof(cmd))))
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return ret;
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/* Read in the response */
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memset(rdbuf, 0, sizeof(rdbuf));
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ret = libusb_bulk_transfer(ctx->dev, ctx->endp_up,
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rdbuf,
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READBACK_LEN,
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&num,
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5000);
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if (ret < 0 || num < 8) {
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ERROR("Failure to receive data from printer (libusb error %d: (%d/%d from 0x%02x))\n", ret, num, (int)sizeof(rdbuf), ctx->endp_up);
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if (ret < 0)
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return ret;
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return 4;
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}
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memcpy(tmp, rdbuf, 8);
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tmp[8] = 0;
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i = atoi(tmp); /* Length of payload in bytes, possibly padded */
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dnpds40_cleanup_string((char*)rdbuf + 8, i);
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INFO("Sensor Info: %s\n", (char*)rdbuf + 8);
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/* *************************** */
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/* Get Media Info */
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dnpds40_build_cmd(&cmd, "INFO", "MEDIA", 0);
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if ((ret = send_data(ctx->dev, ctx->endp_down,
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(uint8_t*)&cmd, sizeof(cmd))))
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return ret;
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/* Read in the response */
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memset(rdbuf, 0, sizeof(rdbuf));
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ret = libusb_bulk_transfer(ctx->dev, ctx->endp_up,
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rdbuf,
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READBACK_LEN,
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&num,
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5000);
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if (ret < 0 || num < 8) {
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ERROR("Failure to receive data from printer (libusb error %d: (%d/%d from 0x%02x))\n", ret, num, (int)sizeof(rdbuf), ctx->endp_up);
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if (ret < 0)
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return ret;
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return 4;
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}
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memcpy(tmp, rdbuf, 8);
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tmp[8] = 0;
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i = atoi(tmp); /* Length of payload in bytes, possibly padded */
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dnpds40_cleanup_string((char*)rdbuf + 8, i);
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INFO("Media Type: %s\n", (char*)rdbuf + 8);
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INFO(" %s\n", dnpds40_media_types((char*)rdbuf+8));
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switch (*(rdbuf+8+4)) {
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case '1':
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INFO(" Stickier paper\n");
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break;
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case '0':
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INFO(" Standard paper\n");
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break;
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default:
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INFO(" Unknown paper(%c)\n", *(rdbuf+8+4));
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break;
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}
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switch (*(rdbuf+8+7)) {
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case '1':
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INFO(" With mark\n");
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break;
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case '0':
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INFO(" Without mark\n");
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break;
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default:
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INFO(" Unknown mark(%c)\n", *(rdbuf+8+7));
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break;
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}
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/* Get Media remaining */
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dnpds40_build_cmd(&cmd, "INFO", "MQTY", 0);
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if ((ret = send_data(ctx->dev, ctx->endp_down,
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(uint8_t*)&cmd, sizeof(cmd))))
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return ret;
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/* Read in the response */
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memset(rdbuf, 0, sizeof(rdbuf));
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ret = libusb_bulk_transfer(ctx->dev, ctx->endp_up,
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rdbuf,
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READBACK_LEN,
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&num,
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5000);
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if (ret < 0 || num < 8) {
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ERROR("Failure to receive data from printer (libusb error %d: (%d/%d from 0x%02x))\n", ret, num, (int)sizeof(rdbuf), ctx->endp_up);
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if (ret < 0)
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return ret;
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return 4;
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}
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memcpy(tmp, rdbuf, 8);
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tmp[8] = 0;
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i = atoi(tmp); /* Length of payload in bytes, possibly padded */
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dnpds40_cleanup_string((char*)rdbuf + 8, i);
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INFO("Prints remaining: %s\n", (char*)rdbuf + 8 + 4);
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return 0;
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}
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static void dnpds40_cmdline(char *caller)
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{
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DEBUG("\t\t%s [ -qs | -qi ]\n", caller);
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}
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static int dnpds40_cmdline_arg(void *vctx, int run, char *arg1, char *arg2)
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{
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struct dnpds40_ctx *ctx = vctx;
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UNUSED(arg2);
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if (!run || !ctx)
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return (!strcmp("-qs", arg1) ||
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!strcmp("-qi", arg1));
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#if 0
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if (!strcmp("-qs", arg1))
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return dnpds40_get_status(ctx);
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#endif
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if (!strcmp("-qi", arg1))
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return dnpds40_get_info(ctx);
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return -1;
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}
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/* Exported */
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struct dyesub_backend dnpds40_backend = {
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.name = "DNP DS40/DS80",
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.version = "0.01",
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.uri_prefix = "dnpds40",
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.cmdline_usage = dnpds40_cmdline,
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.cmdline_arg = dnpds40_cmdline_arg,
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.init = dnpds40_init,
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.attach = dnpds40_attach,
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.teardown = dnpds40_teardown,
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.read_parse = dnpds40_read_parse,
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.main_loop = dnpds40_main_loop,
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.devices = {
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{ USB_VID_DNP, USB_PID_DNP_DS40, P_DNP_DS40, "Kodak"},
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{ 0, 0, 0, ""}
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}
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};
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