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-rw-r--r--backend/pixma/pixma_common.c175
1 files changed, 162 insertions, 13 deletions
diff --git a/backend/pixma/pixma_common.c b/backend/pixma/pixma_common.c
index 7b7ecec..436311a 100644
--- a/backend/pixma/pixma_common.c
+++ b/backend/pixma/pixma_common.c
@@ -1,6 +1,6 @@
/* SANE - Scanner Access Now Easy.
- Copyright (C) 2011-2019 Rolf Bensch <rolf at bensch hyphen online dot de>
+ Copyright (C) 2011-2020 Rolf Bensch <rolf at bensch hyphen online dot de>
Copyright (C) 2007-2008 Nicolas Martin, <nicols-guest at alioth dot debian dot org>
Copyright (C) 2006-2007 Wittawat Yamwong <wittawat@web.de>
@@ -48,11 +48,18 @@
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
+#include <ctype.h>
#include <math.h> /* pow(C90) */
#include <sys/time.h> /* gettimeofday(4.3BSD) */
#include <unistd.h> /* usleep */
+#if defined(HAVE_LIBXML2)
+# include <libxml/parser.h>
+#else
+# error "The pixma backend requires libxml2"
+#endif
+
#include "pixma_rename.h"
#include "pixma_common.h"
#include "pixma_io.h"
@@ -143,6 +150,24 @@ pixma_hexdump (int level, const void *d_, unsigned len)
p++;
}
}
+ for (c = 0; c < 4; c++)
+ {
+ p[0] = ' ';
+ p++;
+ }
+ for (c = 0; c != 16 && (ofs + c) < plen; c++)
+ {
+ if (isprint(d[ofs + c]))
+ p[0] = d[ofs + c];
+ else
+ p[0] = '.';
+ p++;
+ if (c == 7)
+ {
+ p[0] = ' ';
+ p++;
+ }
+ }
p[0] = '\0';
pixma_dbg (level, "%s\n", line);
ofs += c;
@@ -335,7 +360,7 @@ pixma_r_to_ir (uint8_t * gptr, uint8_t * sptr, unsigned w, unsigned c)
/* convert 24/48 bit RGB to 8/16 bit grayscale
*
- * Formular: g = (R + G + B) / 3
+ * Formular: Y' = 0,2126 R' + 0,7152 G' + 0,0722 B'
*
* sptr: source color scale buffer
* gptr: destination gray scale buffer
@@ -345,19 +370,28 @@ pixma_r_to_ir (uint8_t * gptr, uint8_t * sptr, unsigned w, unsigned c)
uint8_t *
pixma_rgb_to_gray (uint8_t * gptr, uint8_t * sptr, unsigned w, unsigned c)
{
- unsigned i, j, g;
+ unsigned i, g;
/* PDBG (pixma_dbg (4, "*pixma_rgb_to_gray*****\n")); */
for (i = 0; i < w; i++)
{
- for (j = 0, g = 0; j < 3; j++)
- {
- g += *sptr++;
- if (c == 6) g += (*sptr++ << 8); /* 48 bit RGB: high byte */
+ if (c == 6)
+ { /* 48 bit RGB */
+ unsigned r = sptr[0] + (sptr[1] << 8);
+ unsigned y = sptr[2] + (sptr[3] << 8);
+ unsigned b = sptr[4] + (sptr[5] << 8);
+
+ g = (r * 2126) + (y * 7152) + (b * 722);
+ sptr += 6;
}
+ else
+ { /* 24 bit RGB */
+ g = (sptr[0] * 2126) + (sptr[1] * 7152) + (sptr[2] * 722);
+ sptr += 3;
+ }
+ g /= 10000; /* 8 and 16 bit gray */
- g /= 3; /* 8 or 16 bit gray */
*gptr++ = g;
if (c == 6) *gptr++ = (g >> 8); /* 16 bit gray: high byte */
}
@@ -846,7 +880,7 @@ pixma_scan (pixma_t * s, pixma_scan_param_t * sp)
sp->line_size, sp->image_size, sp->channels, sp->depth);
pixma_dbg (3, " dpi=%ux%u offset=(%u,%u) dimension=%ux%u\n",
sp->xdpi, sp->ydpi, sp->x, sp->y, sp->w, sp->h);
- pixma_dbg (3, " gamma_table=%p source=%d\n", sp->gamma_table, sp->source);
+ pixma_dbg (3, " gamma=%f gamma_table=%p source=%d\n", sp->gamma, sp->gamma_table, sp->source);
pixma_dbg (3, " threshold=%d threshold_curve=%d\n", sp->threshold, sp->threshold_curve);
pixma_dbg (3, " adf-wait=%d\n", sp->adf_wait);
pixma_dbg (3, " ADF page count: %d\n", sp->adf_pageid);
@@ -1152,14 +1186,35 @@ pixma_get_config (pixma_t * s)
void
pixma_fill_gamma_table (double gamma, uint8_t * table, unsigned n)
{
- int i;
+ unsigned i;
double r_gamma = 1.0 / gamma;
- double out_scale = 255.0;
double in_scale = 1.0 / (n - 1);
- for (i = 0; (unsigned) i != n; i++)
+ /* 8-bits gamma table
+ * for generation 1 scanners
+ */
+ if (n == 4096)
+ {
+ double out_scale = 255.0;
+
+ for (i = 0; (unsigned) i != n; i++)
+ {
+ table[i] = (int) (out_scale * pow (i * in_scale, r_gamma) + 0.5);
+ }
+ }
+
+ /* 16-bits gamma table */
+ else
{
- table[i] = (int) (out_scale * pow (i * in_scale, r_gamma) + 0.5);
+ double out_scale = 65535.0;
+ uint16_t value;
+
+ for (i = 0; i < n; i++)
+ {
+ value = (uint16_t) (out_scale * pow (i * in_scale, r_gamma) + 0.5);
+ table[2 * i] = (uint8_t) (value & 0xff);
+ table[2 * i + 1] = (uint8_t) (value >> 8);
+ }
}
}
@@ -1185,3 +1240,97 @@ pixma_get_device_status (pixma_t * s, pixma_device_status_t * status)
memset (status, 0, sizeof (*status));
return s->ops->get_status (s, status);
}
+
+static const char *
+format_xml_response(const char *resp_details)
+{
+ if (strcmp(resp_details, "DeviceBusy") == 0)
+ /* https://cromwell-intl.com/open-source/canon-pixma-printer-scanner.html */
+ return "DeviceBusy - Device not initialized (yet). " \
+ "Please check the USB power, try a different port or install the Ink Cartridges if the device supports them.";
+ else if (strcmp(resp_details, "ScannerCarriageLockError") == 0)
+ return "ScannerCarriageLockError - Please consult the manual to unlock the Carriage Lock.";
+ else if (strcmp(resp_details, "PCScanning") == 0)
+ return "PCScanning - Previous scan attempt was not completed. Try disconnecting and reconnecting the scanner. " \
+ "If the problem persists, consider reporting it as a bug at http://www.sane-project.org/bugs.html.";
+ else if (strcmp(resp_details, "DeviceCheckError") == 0)
+ return "DeviceCheckError - Device detected a fault. Contact the repair center.";
+ else
+ return resp_details;
+}
+
+int
+pixma_parse_xml_response(const char *xml_message)
+{
+ int status = PIXMA_EPROTO;
+ xmlDoc *doc = NULL;
+ xmlNode *node = NULL;
+ xmlChar *content = NULL;
+
+ doc = xmlReadMemory(xml_message, strlen(xml_message), "mem:device-resp.xml", NULL, 0);
+ if (doc == NULL) {
+ PDBG(pixma_dbg(10, "unable to parse xml response\n"));
+ status = PIXMA_EINVAL;
+ goto clean;
+ }
+
+ node = xmlDocGetRootElement(doc);
+ if (node == NULL) {
+ status = PIXMA_EPROTO;
+ goto clean;
+ }
+
+ /* /cmd */
+ for (; node; node = node->next) {
+ if (strcmp((const char*)node->name, "cmd") == 0)
+ break;
+ }
+ if (!node) {
+ status = PIXMA_EPROTO;
+ goto clean;
+ }
+
+ /* /cmd/contents */
+ for (node = node->children; node; node = node->next) {
+ if (strcmp((const char*)node->name, "contents") == 0)
+ break;
+ }
+ if (!node) {
+ status = PIXMA_EPROTO;
+ goto clean;
+ }
+
+ /* /cmd/contents/param_set */
+ for (node = node->children; node; node = node->next) {
+ if (strcmp((const char*)node->name, "param_set") == 0)
+ break;
+ }
+ if (!node) {
+ status = PIXMA_EPROTO;
+ goto clean;
+ }
+
+ /* /cmd/contents/param_set/response... */
+ for (node = node->children; node; node = node->next)
+ {
+ if (strcmp((const char*)node->name, "response") == 0) {
+ content = xmlNodeGetContent(node);
+ if (strcmp((const char*)content, "OK") == 0)
+ status = PIXMA_STATUS_OK;
+ else
+ status = PIXMA_EINVAL;
+ xmlFree(content);
+ } else if (strcmp((const char*)node->name, "response_detail") == 0) {
+ content = xmlNodeGetContent(node);
+ if (strlen((const char*)content) > 0) {
+ PDBG(pixma_dbg(0, "device response: %s\n",
+ format_xml_response((const char*)content)));
+ }
+ xmlFree(content);
+ }
+ }
+
+clean:
+ xmlFreeDoc(doc);
+ return status;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-02 01:02:27 +0000