summaryrefslogtreecommitdiff
path: root/frontend/jpegtopdf.c
diff options
context:
space:
mode:
Diffstat (limited to 'frontend/jpegtopdf.c')
-rw-r--r--frontend/jpegtopdf.c709
1 files changed, 709 insertions, 0 deletions
diff --git a/frontend/jpegtopdf.c b/frontend/jpegtopdf.c
new file mode 100644
index 0000000..8f144b5
--- /dev/null
+++ b/frontend/jpegtopdf.c
@@ -0,0 +1,709 @@
+/* scanimage -- command line scanning utility
+ * Uses the SANE library.
+ *
+ * Copyright (C) 2021 Thierry HUCHARD <thierry@ordissimo.com>
+ *
+ * For questions and comments contact the sane-devel mailinglist (see
+ * http://www.sane-project.org/mailing-lists.html).
+ *
+ * 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 2 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, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <errno.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <time.h>
+#include "jpegtopdf.h"
+
+#ifndef PATH_MAX
+# define PATH_MAX 4096
+#endif
+
+#define SANE_NO_ERR (0)
+#define SANE_NO_ERR_CANCLED (1)
+
+#define SANE_ERR (-128)
+#define SANE_FILE_ERR (-1)
+
+
+/* Creater/Producer */
+#define SANE_PDF_CREATER "sane"
+#define SANE_PDF_PRODUCER "sane"
+
+/* PDF File Header */
+#define SANE_PDF_HEADER "%%PDF-1.3\n"
+
+/* trailer format */
+#define SANE_PDF_TRAILER_OBJ "trailer\n<<\n/Size %d\n/Root 1 0 R\n/Info 3 0 R\n>>\nstartxref\n%lld\n%%%%EOF\n"
+
+/* xref format */
+#define SANE_PDF_XREF_OBJ1 "xref\n0 %d\n0000000000 65535 f \n"
+#define SANE_PDF_XREF_OBJ2 "%010lld 00000 n \n"
+
+/* Catalog format */
+#define SANE_PDF_CATALOG_OBJ "1 0 obj\n<<\n/Type /Catalog\n/Pages 2 0 R\n>>\nendobj\n"
+
+/* Pages format */
+#define SANE_PDF_PAGES_OBJ1 "2 0 obj\n<<\n/Type /Pages\n/Kids [ "
+#define SANE_PDF_PAGES_OBJ2 "%d 0 R "
+#define SANE_PDF_PAGES_OBJ3 "]\n/Count %d\n>>\nendobj\n"
+
+/* Info format */
+#define SANE_PDF_INFO_OBJ "3 0 obj\n<<\n/Creator (" SANE_PDF_CREATER ")\n/Producer (" SANE_PDF_PRODUCER ")\n/CreationDate %s\n>>\nendobj\n"
+#define SANE_PDF_INFO_DATES "(D:%4d%02d%02d%02d%02d%02d%c%02d'%02d')"
+
+/* Page format */
+#define SANE_PDF_PAGE_OBJ1 "%d 0 obj\n<<\n/Type /Page\n/Parent 2 0 R\n"
+#define SANE_PDF_PAGE_OBJ2 "/Resources\n<<\n/XObject << /Im%d %d 0 R >>\n/ProcSet [ /PDF /%s ]\n>>\n"
+#define SANE_PDF_PAGE_OBJ3 "/MediaBox [ 0 0 %d %d ]\n/Contents %d 0 R\n>>\nendobj\n"
+#define SANE_PDF_PAGE_OBJ3_180 "/Rotate 180\n/MediaBox [ 0 0 %d %d ]\n/Contents %d 0 R\n>>\nendobj\n"
+#define SANE_PDF_PAGE_OBJ SANE_PDF_PAGE_OBJ1 SANE_PDF_PAGE_OBJ2 SANE_PDF_PAGE_OBJ3
+#define SANE_PDF_PAGE_OBJ_180 SANE_PDF_PAGE_OBJ1 SANE_PDF_PAGE_OBJ2 SANE_PDF_PAGE_OBJ3_180
+
+/* Contents format */
+#define SANE_PDF_CONTENTS_OBJ1 "%d 0 obj\n<< /Length %d 0 R >>\nstream\n"
+#define SANE_PDF_CONTENTS_OBJ2 "q\n%d 0 0 %d 0 0 cm\n/Im%d Do\nQ\n"
+
+/* XObject(Image) format */
+#define SANE_PDF_IMAGE_OBJ1 "%d 0 obj\n<<\n/Length %d 0 R\n/Type /XObject\n/Subtype /Image\n"
+#define SANE_PDF_IMAGE_OBJ2 "/Width %d /Height %d\n/ColorSpace /%s\n/BitsPerComponent %d\n"
+#define SANE_PDF_IMAGE_OBJ3 "/Filter /DCTDecode\n>>\nstream\n"
+#define SANE_PDF_IMAGE_OBJ SANE_PDF_IMAGE_OBJ1 SANE_PDF_IMAGE_OBJ2 SANE_PDF_IMAGE_OBJ3
+
+/* Length format */
+#define SANE_PDF_LENGTH_OBJ "%d 0 obj\n%d\nendobj\n"
+
+/* end of stream/object */
+#define SANE_PDF_END_ST_OBJ "endstream\nendobj\n"
+
+
+/* object id of first page */
+#define SANE_PDF_FIRST_PAGE_ID (4)
+
+/* xref max value */
+#define SANE_PDF_XREF_MAX (9999999999LL)
+
+/* pdfwork->offset_table */
+enum {
+ SANE_PDF_ENDDOC_XREF = 0,
+ SANE_PDF_ENDDOC_CATALOG,
+ SANE_PDF_ENDDOC_PAGES,
+ SANE_PDF_ENDDOC_INFO,
+ SANE_PDF_ENDDOC_NUM,
+};
+
+/* pdfpage->offset_table */
+enum {
+ SANE_PDF_PAGE_OBJ_PAGE = 0,
+ SANE_PDF_PAGE_OBJ_IMAGE,
+ SANE_PDF_PAGE_OBJ_IMAGE_LEN,
+ SANE_PDF_PAGE_OBJ_CONTENTS,
+ SANE_PDF_PAGE_OBJ_CONTENTS_LEN,
+ SANE_PDF_PAGE_OBJ_NUM,
+};
+
+/* Page object info */
+typedef struct sane_pdf_page {
+ SANE_Int page; /* page No. */
+ SANE_Int obj_id; /* Page object id */
+ SANE_Int image_type; /* ColorSpace, BitsPerComponent */
+ SANE_Int res; /* image resolution */
+ SANE_Int w; /* width (image res) */
+ SANE_Int h; /* height (image res) */
+ SANE_Int w_72; /* width (72dpi) */
+ SANE_Int h_72; /* height (72dpi) */
+ SANE_Int64 offset_table[SANE_PDF_PAGE_OBJ_NUM]; /* xref table */
+ SANE_Int stream_len; /* stream object length */
+ SANE_Int status; /* page object status */
+ struct sane_pdf_page *prev; /* previous page data */
+ struct sane_pdf_page *next; /* next page data */
+} SANE_pdf_page;
+
+
+/* PDF Work */
+typedef struct {
+ SANE_Int obj_num; /* xref - num, trailer - Size */
+ SANE_Int page_num; /* Pages - Count */
+ SANE_Int64 offset_table[SANE_PDF_ENDDOC_NUM]; /* xref table */
+ SANE_pdf_page *first; /* first page data */
+ SANE_pdf_page *last; /* last page data */
+ FILE* fd; /* destination file */
+} SANE_pdf_work;
+
+static SANE_Int re_write_if_fail(
+ FILE * fd,
+ void * lpSrc,
+ SANE_Int writeSize )
+{
+ SANE_Int ret = SANE_ERR, ldata_1st, ldata_2nd;
+
+ if( ( fd == NULL ) || ( lpSrc == NULL ) || ( writeSize <= 0 ) ) {
+ fprintf ( stderr, "[re_write_if_fail]Parameter is error.\n" );
+ goto EXIT;
+ }
+ else if( ( ldata_1st = fwrite( (SANE_Byte *)lpSrc, 1, writeSize, fd ) ) != writeSize ){
+ fprintf ( stderr, "[re_write_if_fail]Can't write file(1st request:%d -> write:%d).\n", writeSize, ldata_1st );
+ if( ( ldata_2nd = fwrite( (SANE_Byte*)lpSrc+ldata_1st, 1, writeSize-ldata_1st, fd) ) != writeSize-ldata_1st ){ /* For detect write() error */
+ fprintf ( stderr, "[re_write_if_fail]Can't write file(2nd request:%d -> write:%d).\n", writeSize-ldata_1st, ldata_2nd );
+ goto EXIT;
+ }
+ }
+ ret = SANE_NO_ERR;
+EXIT:
+ return ret;
+}
+
+static SANE_Int64 _get_current_offset( FILE *fd )
+{
+ SANE_Int64 offset64 = (SANE_Int64)fseek( fd, 0, SEEK_CUR );
+
+ if ( offset64 > SANE_PDF_XREF_MAX ) offset64 = -1;
+
+ return offset64;
+}
+
+static SANE_Int _get_current_time( struct tm *pt, SANE_Byte *sign_c, int *ptz_h, int *ptz_m )
+{
+ SANE_Int ret = SANE_ERR;
+ time_t t;
+ long tz;
+
+ if ( pt == NULL || sign_c == NULL || ptz_h == NULL || ptz_m == NULL ) {
+ goto EXIT;
+ }
+
+ memset ((void *)pt, 0, sizeof(struct tm) );
+ /* get time */
+ if( ( t = time( NULL ) ) < 0 ) {
+ fprintf ( stderr, " Can't get time.\n" );
+ goto EXIT;
+ }
+ /* get localtime */
+ if ( localtime_r( &t, pt ) == NULL ) {
+ fprintf ( stderr, " Can't get localtime.\n" );
+ goto EXIT;
+ }
+ /* get time difference ( OHH'mm' ) */
+ tz = timezone;
+ if ( tz > 0 ) {
+ *sign_c = '-';
+ }
+ else {
+ tz = -tz;
+ *sign_c = '+';
+ }
+ *ptz_h = tz / 60 / 60;
+ *ptz_m = ( tz / 60 ) % 60;
+
+ ret = SANE_NO_ERR;
+EXIT:
+ return ret;
+}
+
+SANE_Int sane_pdf_open( void **ppw, FILE *fd )
+{
+ SANE_Int ret = SANE_ERR;
+ SANE_pdf_work *p = NULL;
+
+ if ( fd == NULL ) {
+ fprintf ( stderr, " Initialize parameter is error!\n" );
+ goto EXIT;
+ }
+ else if ( ( p = (SANE_pdf_work *)calloc(1, sizeof(SANE_pdf_page) ) ) == NULL ) {
+ fprintf ( stderr, " Can't get work memory!\n" );
+ goto EXIT;
+ }
+
+ p->fd = fd;
+ p->obj_num = SANE_PDF_FIRST_PAGE_ID - 1; /* Catalog, Pages, Info */
+ p->page_num = 0;
+ p->first = NULL;
+ p->last = NULL;
+
+ *ppw = (void *)p;
+
+ ret = SANE_NO_ERR;
+EXIT:
+ return ret;
+}
+
+void sane_pdf_close( void *pw )
+{
+ SANE_pdf_page *cur, *next;
+ SANE_pdf_work *pwork = (SANE_pdf_work *)pw;
+
+ if ( pwork == NULL ) {
+ fprintf ( stderr, " Initialize parameter is error!\n");
+ goto EXIT;
+ }
+
+ cur = pwork->first;
+ while ( cur != NULL ) {
+ next = cur->next;
+ free( (void *)cur );
+ cur = next;
+ }
+
+ free ( (void *)pwork );
+
+EXIT:
+ return ;
+}
+
+SANE_Int sane_pdf_start_doc( void *pw )
+{
+ SANE_Int ret = SANE_ERR, ldata;
+ SANE_Byte str[32];
+ SANE_Int len;
+ SANE_pdf_work *pwork = (SANE_pdf_work *)pw;
+
+ if ( pwork == NULL ) {
+ fprintf ( stderr, " Initialize parameter is error!\n");
+ goto EXIT;
+ }
+
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_HEADER );
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ ret = SANE_NO_ERR;
+EXIT:
+ return ret;
+}
+
+SANE_Int sane_pdf_end_doc( void *pw )
+{
+ SANE_Int ret = SANE_ERR, ldata, i, size, w_count;
+ SANE_pdf_page *p = NULL;
+ SANE_Byte str[1024], str_t[64];
+ SANE_Int len;
+ SANE_pdf_work *pwork = (SANE_pdf_work *)pw;
+
+ struct tm tm;
+ SANE_Byte sign_c;
+ int tz_h = 0, tz_m = 0;
+
+ if ( pwork == NULL ) {
+ fprintf ( stderr, " Initialize parameter is error!\n");
+ goto EXIT;
+ }
+
+ size = pwork->obj_num + 1;
+ w_count = 1;
+
+ /* <1> Pages */
+ if ( ( pwork->offset_table[ SANE_PDF_ENDDOC_PAGES ] = _get_current_offset( pwork->fd ) ) < 0 ) {
+ fprintf ( stderr, " offset > %lld\n", SANE_PDF_XREF_MAX );
+ goto EXIT;
+ }
+ /* write Pages(1) */
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_PAGES_OBJ1 );
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ /* write Pages(2) ... Kids array */
+ p = pwork->first;
+ i = 0;
+ while ( p != NULL ) {
+ i++;
+ if ( p->status != SANE_NO_ERR ) {
+ fprintf ( stderr, " page(%d) is NG!\n", i );
+ goto EXIT;
+ }
+
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_PAGES_OBJ2, (int)p->obj_id ); /* Page object id */
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ p = p->next;
+ }
+
+ /* write Pages(3) */
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_PAGES_OBJ3, (int)pwork->page_num ); /* Count */
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ /* <2> Catalog */
+ if ( ( pwork->offset_table[ SANE_PDF_ENDDOC_CATALOG ] = _get_current_offset( pwork->fd ) ) < 0 ) {
+ fprintf ( stderr, " offset > %lld\n", SANE_PDF_XREF_MAX );
+ goto EXIT;
+ }
+ /* write Catalog */
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_CATALOG_OBJ );
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ /* <3> Info */
+ if ( ( pwork->offset_table[ SANE_PDF_ENDDOC_INFO ] = _get_current_offset( pwork->fd ) ) < 0 ) {
+ fprintf ( stderr, " offset > %lld\n", SANE_PDF_XREF_MAX );
+ goto EXIT;
+ }
+ if ( _get_current_time( &tm, &sign_c, &tz_h, &tz_m ) == SANE_ERR ) {
+ fprintf ( stderr, " Error is occured in _get_current_time.\n" );
+ goto EXIT;
+ }
+ /* Dates format */
+ len = snprintf((char*)str_t, sizeof(str_t), SANE_PDF_INFO_DATES,
+ tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec, sign_c, tz_h, tz_m );
+ if ( (size_t)len >= sizeof(str_t) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ /* write Info */
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_INFO_OBJ, str_t ); /* CreationDate */
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ /* <4> xref */
+ if ( ( pwork->offset_table[ SANE_PDF_ENDDOC_XREF ] = _get_current_offset( pwork->fd ) ) < 0 ) {
+ fprintf ( stderr, " offset > %lld\n", SANE_PDF_XREF_MAX );
+ goto EXIT;
+ }
+ /* write xref(1) */
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_XREF_OBJ1, (int)size ); /* object num */
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ /* write xref(2) */
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_XREF_OBJ2 SANE_PDF_XREF_OBJ2 SANE_PDF_XREF_OBJ2,
+ pwork->offset_table[ SANE_PDF_ENDDOC_CATALOG ], /* object id = 1 : Catalog */
+ pwork->offset_table[ SANE_PDF_ENDDOC_PAGES ], /* object id = 2 : Pages */
+ pwork->offset_table[ SANE_PDF_ENDDOC_INFO ] ); /* object id = 3 : Info */
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+ w_count += SANE_PDF_FIRST_PAGE_ID - 1;
+
+ /* write xref(3) */
+ p = pwork->first;
+ while ( p != NULL ) {
+ /* write offset : SANE_PDF_PAGE_OBJ_PAGE -> SANE_PDF_PAGE_OBJ_CONTENTS_LEN */
+ for ( i = 0; i < SANE_PDF_PAGE_OBJ_NUM; i++ ) {
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_XREF_OBJ2, p->offset_table[ i ] ); /* object id = 3 ~ */
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+ w_count ++;
+ }
+ p = p->next;
+ }
+ /* check object number */
+ if ( w_count != size ) {
+ fprintf ( stderr, " object number is wrong.\n" );
+ goto EXIT;
+ }
+
+ /* <4> trailer */
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_TRAILER_OBJ,
+ (int)size, /* object num */
+ pwork->offset_table[ SANE_PDF_ENDDOC_XREF ] ); /* xref offset */
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+
+ ret = SANE_NO_ERR;
+EXIT:
+ return ret;
+}
+
+SANE_Int sane_pdf_start_page(
+ void *pw,
+ SANE_Int w,
+ SANE_Int h,
+ SANE_Int res,
+ SANE_Int type,
+ SANE_Int rotate )
+{
+ SANE_Int ret = SANE_ERR, ldata;
+ SANE_pdf_page *p = NULL;
+ SANE_Byte str[1024];
+ SANE_Int len, len_c;
+ SANE_Byte *ProcSetImage[SANE_PDF_IMAGE_NUM] = { (SANE_Byte *)"ImageC", (SANE_Byte *)"ImageG", (SANE_Byte *)"ImageG" };
+ SANE_Byte *ColorSpace[SANE_PDF_IMAGE_NUM] = { (SANE_Byte *)"DeviceRGB", (SANE_Byte *)"DeviceGray", (SANE_Byte *)"DeviceGray" };
+ SANE_Int BitsPerComponent[SANE_PDF_IMAGE_NUM] = { 8, 8, 1 };
+ SANE_pdf_work *pwork = (SANE_pdf_work *)pw;
+
+ if ( pwork == NULL || w <= 0 || h <= 0 || res <= 0 ||
+ !( type == SANE_PDF_IMAGE_COLOR || type == SANE_PDF_IMAGE_GRAY || type == SANE_PDF_IMAGE_MONO ) ||
+ !( rotate == SANE_PDF_ROTATE_OFF || rotate == SANE_PDF_ROTATE_ON ) ) {
+ fprintf ( stderr, " Initialize parameter is error!\n");
+ goto EXIT;
+ }
+ else if ( ( p = (SANE_pdf_page *)calloc( 1, sizeof(SANE_pdf_page) ) ) == NULL ) {
+ fprintf ( stderr, " Can't get work memory!\n" );
+ goto EXIT;
+ }
+
+ pwork->obj_num += SANE_PDF_PAGE_OBJ_NUM;
+ pwork->page_num ++;
+
+ p->prev = p->next = NULL;
+ if ( pwork->first == NULL ) {
+ /* append first page */
+ pwork->first = p;
+ }
+ if ( pwork->last == NULL ) {
+ /* append first page */
+ pwork->last = p;
+ }
+ else {
+ /* append page */
+ pwork->last->next = p;
+ p->prev = pwork->last;
+ pwork->last = p;
+ }
+
+ p->page = pwork->page_num;
+ /* page obj id : page1=4, page2=4+5=9, page3=4+5*2=14, ... */
+ p->obj_id = SANE_PDF_FIRST_PAGE_ID + ( p->page - 1 ) * SANE_PDF_PAGE_OBJ_NUM;
+ p->image_type = type;
+ p->res = res;
+ p->w = w; p->h = h;
+ p->w_72 = w * 72 / res; p->h_72 = h * 72 / res;
+ p->stream_len = 0;
+ p->status = SANE_ERR;
+
+ /* <1> Page */
+ if ( ( p->offset_table[ SANE_PDF_PAGE_OBJ_PAGE ] = _get_current_offset( pwork->fd ) ) < 0 ) {
+ fprintf ( stderr, " offset > %lld\n", SANE_PDF_XREF_MAX );
+ goto EXIT;
+ }
+ /* write Page */
+ if ( rotate == SANE_PDF_ROTATE_OFF ) {
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_PAGE_OBJ,
+ (int)(p->obj_id + SANE_PDF_PAGE_OBJ_PAGE), /* object id ( Page ) */
+ (int)p->page, /* ImX (X = page number) ... XObject/Image Name */
+ (int)(p->obj_id + SANE_PDF_PAGE_OBJ_IMAGE), /* object id ( XObject/Image ) */
+ ProcSetImage[ type ], /* ProcSet */
+ (int)p->w_72, (int)p->h_72, /* MediaBox */
+ (int)(p->obj_id + SANE_PDF_PAGE_OBJ_CONTENTS) ); /* object id ( Contents ) */
+ }
+ else {
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_PAGE_OBJ_180,
+ (int)(p->obj_id + SANE_PDF_PAGE_OBJ_PAGE), /* object id ( Page ) */
+ (int)p->page, /* ImX (X = page number) ... XObject/Image Name */
+ (int)(p->obj_id + SANE_PDF_PAGE_OBJ_IMAGE), /* object id ( XObject/Image ) */
+ ProcSetImage[ type ], /* ProcSet */
+ (int)p->w_72, (int)p->h_72, /* MediaBox */
+ (int)(p->obj_id + SANE_PDF_PAGE_OBJ_CONTENTS) ); /* object id ( Contents ) */
+ }
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ /* <2> Contents */
+ if ( ( p->offset_table[ SANE_PDF_PAGE_OBJ_CONTENTS ] = _get_current_offset( pwork->fd ) ) < 0 ) {
+ fprintf ( stderr, " offset > %lld\n", SANE_PDF_XREF_MAX );
+ goto EXIT;
+ }
+ /* write Contents(1) */
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_CONTENTS_OBJ1,
+ (int)(p->obj_id + SANE_PDF_PAGE_OBJ_CONTENTS), /* object id ( Contents ) */
+ (int)(p->obj_id + SANE_PDF_PAGE_OBJ_CONTENTS_LEN) ); /* object id ( Length of Contents ) */
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+ /* write Contents(2) */
+ len_c = len = snprintf( (char*)str, sizeof(str), SANE_PDF_CONTENTS_OBJ2,
+ (int)p->w_72, (int)p->h_72, /* CTM ( scaling ) */
+ (int)p->page ); /* ImX (X = page number) ... XObject/Image Name */
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ /* write Contents(3) */
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_END_ST_OBJ );
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ /* <3> Length of Contents - stream */
+ if ( ( p->offset_table[ SANE_PDF_PAGE_OBJ_CONTENTS_LEN ] = _get_current_offset( pwork->fd ) ) < 0 ) {
+ fprintf ( stderr, " offset > %lld\n", SANE_PDF_XREF_MAX );
+ goto EXIT;
+ }
+ /* write Length */
+ len = snprintf( (char *)str, sizeof(str), SANE_PDF_LENGTH_OBJ,
+ (int)(p->obj_id + SANE_PDF_PAGE_OBJ_CONTENTS_LEN), /* object id ( Length of Contents ) */
+ len_c ); /* length value */
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ /* <4> XObject(Image) */
+ if ( ( p->offset_table[ SANE_PDF_PAGE_OBJ_IMAGE ] = _get_current_offset( pwork->fd ) ) < 0 ) {
+ fprintf ( stderr, " offset > %lld\n", SANE_PDF_XREF_MAX );
+ goto EXIT;
+ }
+ /* write XObject */
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_IMAGE_OBJ,
+ (int)(p->obj_id + SANE_PDF_PAGE_OBJ_IMAGE), /* object id ( XObject(Image) ) */
+ (int)(p->obj_id + SANE_PDF_PAGE_OBJ_IMAGE_LEN), /* object id ( Length of XObject ) */
+ (int)p->w, (int)p->h, /* Width/Height */
+ ColorSpace[ type ], /* ColorSpace */
+ (int)BitsPerComponent[ type ] ); /* BitsPerComponent */
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ ret = SANE_NO_ERR;
+EXIT:
+ return ret;
+
+}
+
+SANE_Int sane_pdf_end_page( void *pw )
+{
+ SANE_Int ret = SANE_ERR, ldata;
+ SANE_pdf_page *p = NULL;
+ SANE_Byte str[1024];
+ SANE_Int len;
+ SANE_pdf_work *pwork = (SANE_pdf_work *)pw;
+
+ if ( pwork == NULL ) {
+ fprintf ( stderr, " Initialize parameter is error!\n" );
+ goto EXIT;
+ }
+
+ p = pwork->last;
+
+ /* <1> endstream, endobj (XObject) */
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_END_ST_OBJ );
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ /* <2> Length of XObject - stream */
+ if ( ( p->offset_table[ SANE_PDF_PAGE_OBJ_IMAGE_LEN ] = _get_current_offset( pwork->fd ) ) < 0 ) {
+ fprintf ( stderr, " offset > %lld\n", SANE_PDF_XREF_MAX );
+ goto EXIT;
+ }
+ /* write Length */
+ len = snprintf( (char*)str, sizeof(str), SANE_PDF_LENGTH_OBJ,
+ (int)(p->obj_id + SANE_PDF_PAGE_OBJ_IMAGE_LEN), /* object id ( Length of XObject stream ) */
+ (int)p->stream_len ); /* length value */
+ if ( (size_t)len >= sizeof(str) || len < 0 ) {
+ fprintf ( stderr, " string is too long!\n" );
+ goto EXIT;
+ }
+ if ( ( ldata = re_write_if_fail( pwork->fd, str, len ) ) < 0 ) {
+ fprintf ( stderr, " Error is occured in re_write_if_fail.\n" );
+ goto EXIT;
+ }
+
+ ret = SANE_NO_ERR;
+ p->status = SANE_NO_ERR;
+EXIT:
+ return ret;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 01:49:59 +0000