kopia lustrzana https://gitlab.com/sane-project/frontends
2005-12-04 Rene Rebe <rene@exactcode.de>
* src/scanadf.c doc/scanadf.man: Added -p, --pipe option to scanadf to pass data to the scripts via stdin and thus process the image data parallel to the scan.merge-requests/2/head
Rene Rebe
rodzic
032982c557
commit
f79f2c3016
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@ -1,3 +1,10 @@
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2005-12-04 Rene Rebe <rene@exactcode.de>
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* src/scanadf.c doc/scanadf.man: Added -p, --pipe option to scanadf
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to pass data to the scripts via stdin and thus process the image
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data parallel to the scan.
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2005-10-09 Henning Meier-Geinitz <henning@meier-geinitz.de>
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* configure configure.in: Changed version to 1.0.14-cvs.
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@ -20,6 +20,7 @@ scanadf - acquire multiple images from a scanner equipped with an ADF
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.IR num ]
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.RB [ -e | --end-count
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.IR num ]
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.RB [ -p | --pipe ]
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.RB [ -r | --raw ]
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.RI [ device-specific-options ]
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.SH DESCRIPTION
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@ -158,6 +159,9 @@ information about the parameters of the image.
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.B SCAN_FORMAT_ID
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- the numeric image format identifier
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.br
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.B SCAN_PIPE
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- non-zero if a pipe is used for data transfer (instead of files)
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.br
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.RE
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.PP
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@ -199,6 +203,16 @@ the file to a more useful format. NOTE: With support for the
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optional frame types and the default handling of unrecognized
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frametypes, this option becomes less and less useful.
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The
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.B -p
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or
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.B --pipe
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option allows passing the image date to the scan-script via a pipe
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rather than saving it to a file and executing the script thereafter.
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It might be useful for high-performance batch scans that should do
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post-processing, such as format convertion, on-the-fly.
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.PP
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As you might imagine, much of the power of
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.B scanadf
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comes from the fact that it can control any SANE backend. Thus, the
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@ -251,6 +265,10 @@ work at this time are:
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.RS
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.br
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.B sane-avision
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- Avision (and compatible) scanners. For batch scanning the --source "ADF",
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"ADF Rear" or "ADF Duplex" should be used.
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.br
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.B sane-bh
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- Bell+Howell Copiscan II series scanners.
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.br
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180
src/scanadf.c
180
src/scanadf.c
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@ -4,6 +4,7 @@
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scanimage by Andreas Beck and David Mosberger
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Copyright (C) 1999 Tom Martone
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Copyright (C) 2005 Rene Rebe ([ -p | --pipe] script option)
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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@ -105,10 +106,11 @@ static struct option basic_options[] =
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{ "scan-script", required_argument, 0, 'S' },
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{ "script-wait", no_argument, 0, 128 },
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{ "raw", no_argument, 0, 'r' },
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{ "pipe", no_argument, 0, 'p' },
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{0, }
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};
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#define BASE_OPTSTRING "d:hLvVNTo:s:e:S:r"
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#define BASE_OPTSTRING "d:hLvVNTo:s:e:S:pr"
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#define STRIP_HEIGHT 256 /* # lines we increment image height */
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static struct option * all_options;
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@ -875,8 +877,89 @@ get_resolution(SANE_Device *device)
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return res;
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}
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static int
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exec_script (const char *script, const char* fname, SANE_Bool use_pipe,
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SANE_Parameters *parm, int *fd)
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{
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static char cmd[PATH_MAX * 2];
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static char env[7][PATH_MAX * 2];
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int pid;
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SANE_Int res;
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SANE_Frame format;
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extern char **environ;
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int pipefd[2];
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res = get_resolution(device);
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format = parm->format;
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if (format == SANE_FRAME_RED ||
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format == SANE_FRAME_GREEN ||
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format == SANE_FRAME_BLUE)
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{
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/* the resultant format is RGB */
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format = SANE_FRAME_RGB;
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}
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sprintf(env[0], "SCAN_RES=%d", res);
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if (putenv(env[0]))
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fprintf(stderr, "putenv:failed\n");
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sprintf(env[1], "SCAN_WIDTH=%d", parm->pixels_per_line);
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if (putenv(env[1]))
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fprintf(stderr, "putenv:failed\n");
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sprintf(env[2], "SCAN_HEIGHT=%d", parm->lines);
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if (putenv(env[2]))
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fprintf(stderr, "putenv:failed\n");
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sprintf(env[3], "SCAN_FORMAT_ID=%d", (int) parm->format);
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if (putenv(env[3]))
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fprintf(stderr, "putenv:failed\n");
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sprintf(env[4], "SCAN_FORMAT=%s",
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sane_strframe(parm->format));
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if (putenv(env[4]))
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fprintf(stderr, "putenv:failed\n");
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sprintf(env[5], "SCAN_DEPTH=%d", parm->depth);
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if (putenv(env[5]))
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fprintf(stderr, "putenv:failed\n");
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sprintf(env[6], "SCAN_PIPE=%d", use_pipe);
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if (putenv(env[6]))
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fprintf(stderr, "putenv:failed\n");
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if (use_pipe) {
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pipe(pipefd);
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}
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/*signal(SIGCHLD, SIG_IGN);*/
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switch ((pid = fork()))
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{
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case -1:
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/* fork failed */
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fprintf(stderr, "Error forking: %s (%d)\n", strerror(errno), errno);
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break;
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case 0:
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/* in child process */
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if (use_pipe) {
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dup2(pipefd[0],0); close(pipefd[0]); close(pipefd[1]);
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}
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sprintf(cmd, "%s '%s'", script, fname);
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execle(script, script, fname, NULL, environ);
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exit(0);
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default:
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if (verbose)
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fprintf(stderr, "Started script `%s' as pid=%d\n", script, pid);
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break;
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}
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if (use_pipe) {
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close(pipefd[0]);
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*fd = pipefd[1];
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}
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return pid;
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}
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static SANE_Status
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scan_it_raw (const char *fname, SANE_Bool raw, const char *script)
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scan_it_raw (const char *fname, SANE_Bool raw, const char *script,
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SANE_Bool use_pipe)
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{
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int i, len, first_frame = 1, offset = 0, must_buffer = 0;
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SANE_Byte buffer[32*1024], min = 0xff, max = 0;
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@ -884,6 +967,7 @@ scan_it_raw (const char *fname, SANE_Bool raw, const char *script)
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SANE_Status status;
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Image image = {0, };
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FILE *fp = NULL;
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int pid = 0;
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do
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{
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@ -906,7 +990,15 @@ scan_it_raw (const char *fname, SANE_Bool raw, const char *script)
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goto cleanup;
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}
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fp = fopen(fname, "wb");
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if (script && use_pipe)
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{
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int fd = 0;
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pid = exec_script(script, fname, use_pipe, &parm, &fd);
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fp = fdopen (fd, "wb");
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}
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else
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fp = fopen(fname, "wb");
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if (!fp) {
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fprintf(stderr, "Error opening output `%s': %s (%d)\n",
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fname, strerror(errno), errno);
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@ -1147,65 +1239,16 @@ scan_it_raw (const char *fname, SANE_Bool raw, const char *script)
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fp = NULL;
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}
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if (script)
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{
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static char cmd[PATH_MAX * 2];
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static char env[6][PATH_MAX * 2];
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int pid;
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SANE_Int res;
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SANE_Frame format;
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extern char **environ;
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if (script && !use_pipe)
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pid = exec_script (script, fname, use_pipe, &parm, NULL);
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res = get_resolution(device);
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format = parm.format;
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if (format == SANE_FRAME_RED ||
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format == SANE_FRAME_GREEN ||
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format == SANE_FRAME_BLUE)
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{
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/* the resultant format is RGB */
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format = SANE_FRAME_RGB;
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}
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sprintf(env[0], "SCAN_RES=%d", res);
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if (putenv(env[0]))
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fprintf(stderr, "putenv:failed\n");
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sprintf(env[1], "SCAN_WIDTH=%d", parm.pixels_per_line);
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if (putenv(env[1]))
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fprintf(stderr, "putenv:failed\n");
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sprintf(env[2], "SCAN_HEIGHT=%d", parm.lines);
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if (putenv(env[2]))
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fprintf(stderr, "putenv:failed\n");
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sprintf(env[3], "SCAN_FORMAT_ID=%d", (int) parm.format);
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if (putenv(env[3]))
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fprintf(stderr, "putenv:failed\n");
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sprintf(env[4], "SCAN_FORMAT=%s",
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sane_strframe(parm.format));
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if (putenv(env[4]))
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fprintf(stderr, "putenv:failed\n");
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sprintf(env[5], "SCAN_DEPTH=%d", parm.depth);
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if (putenv(env[5]))
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fprintf(stderr, "putenv:failed\n");
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signal(SIGCHLD, SIG_IGN);
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switch ((pid = fork()))
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{
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case -1:
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/* fork failed */
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fprintf(stderr, "Error forking: %s (%d)\n", strerror(errno), errno);
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break;
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case 0:
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/* in child process */
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sprintf(cmd, "%s '%s'", script, fname);
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/* system(cmd); */
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execle(script, script, fname, NULL, environ);
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exit(0);
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default:
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if (verbose)
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fprintf(stderr, "Started script `%s' as pid=%d\n", script, pid);
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break;
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}
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}
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if (script) {
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int exit_status = 0;
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waitpid (pid, &exit_status, 0);
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if (exit_status && verbose)
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fprintf(stderr, "%s: WARNING: child exited with %d\n",
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prog_name, exit_status);
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}
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cleanup:
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if (image.data)
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@ -1216,7 +1259,8 @@ cleanup:
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}
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static SANE_Int
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scan_docs (int start, int end, int no_overwrite, SANE_Bool raw, const char *outfmt, const char *script)
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scan_docs (int start, int end, int no_overwrite, SANE_Bool raw,
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const char *outfmt, const char *script, SANE_Bool use_pipe)
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{
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SANE_Status status = SANE_STATUS_GOOD;
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SANE_Int scannedPages = 0;
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@ -1226,8 +1270,7 @@ scan_docs (int start, int end, int no_overwrite, SANE_Bool raw, const char *outf
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while (end < 0 || start <= end)
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{
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/*!!! buffer overflow; need protection */
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sprintf(fname, outfmt, start);
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snprintf(fname, sizeof (fname), outfmt, start);
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/* does the filename already exist? */
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if (no_overwrite)
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@ -1242,7 +1285,7 @@ scan_docs (int start, int end, int no_overwrite, SANE_Bool raw, const char *outf
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/* Scan the document */
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if (status == SANE_STATUS_GOOD)
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status = scan_it_raw(fname, raw, script);
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status = scan_it_raw(fname, raw, script, use_pipe);
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/* Any scan errors? */
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if (status == SANE_STATUS_NO_DOCS)
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@ -1283,6 +1326,7 @@ main (int argc, char **argv)
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SANE_Status status;
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char *full_optstring;
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SANE_Bool raw = SANE_FALSE;
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SANE_Bool use_pipe = SANE_FALSE;
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const char *scanScript = NULL; /* script to run at end of scan */
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int scriptWait = 0;
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const char *outputFile = "image-%04d"; /* file name(format) to write output to */
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@ -1343,6 +1387,7 @@ main (int argc, char **argv)
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case 's': startNum = atoi(optarg); break;
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case 'e': endNum = atoi(optarg); break;
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case 'r': raw = SANE_TRUE; break;
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case 'p': use_pipe = SANE_TRUE; break;
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case 'V':
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printf ("scanadf (%s) %s\n", PACKAGE, VERSION);
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@ -1463,7 +1508,7 @@ main (int argc, char **argv)
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exit (1); /* error message is printed by getopt_long() */
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case 'd': case 'h': case 'v': case 'V': case 'T':
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case 'o': case 'S': case 's': case 'e': case 'r':
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case 'o': case 'S': case 's': case 'e': case 'p': case 'r':
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/* previously handled options */
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break;
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@ -1577,7 +1622,8 @@ List of available devices:", prog_name);
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signal (SIGPIPE, sighandler);
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signal (SIGTERM, sighandler);
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status = scan_docs (startNum, endNum, no_overwrite, raw, outputFile, scanScript);
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status = scan_docs (startNum, endNum, no_overwrite, raw,
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outputFile, scanScript, use_pipe);
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sane_cancel (device);
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sane_close (device);
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