slp/selphy_print
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common: Add core support for multi-page print jobs.

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If the backend supports it, restart the backend if we detect additional
data waiting.  Hopefully that detection is sane.
This commit is contained in:
Solomon Peachy 2014-01-17 22:58:03 -05:00
parent d7d60b7191
commit 75de99c103
1 changed files with 26 additions and 5 deletions
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31
backend_common.c
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@ -27,7 +27,7 @@
#include "backend_common.h"
#define BACKEND_VERSION "0.28"
#define BACKEND_VERSION "0.29"
#ifndef URI_PREFIX
#error "Must Define URI_PREFIX"
#endif
@ -416,6 +416,7 @@ int main (int argc, char **argv)
int found = -1;
int copies = 1;
int jobid = 0;
int pages = 0;
char *uri = getenv("DEVICE_URI");
char *use_serno = NULL;
@ -642,20 +643,40 @@ int main (int argc, char **argv)
goto done_claimed;
}
/* Time for the main processing loop */
INFO("Printing started (%d copies)\n", copies);
newpage:
/* Do early parsing if needed for subsequent pages */
if (pages && backend->early_parse) {
backend->early_parse(backend_ctx, data_fd);
}
/* Read in data */
if (backend->read_parse(backend_ctx, data_fd))
goto done_claimed;
close(data_fd);
/* Time for the main processing loop */
INFO("Printing started (%d copies)\n", copies);
INFO("Printing page %d\n", ++pages);
ret = backend->main_loop(backend_ctx, copies);
if (ret)
goto done_claimed;
/* Do we have another page of data waiting for us? */
if (backend->multipage_capable) {
fd_set fds;
struct timeval tmo = { 0, 0 };
FD_ZERO(&fds);
FD_SET(data_fd, &fds);
i = select(data_fd + 1, &fds, NULL, NULL, &tmo);
if (i > 0)
goto newpage;
}
close(data_fd);
/* Done printing */
INFO("All printing done\n");
INFO("All printing done (%d pages * %d copies)\n", pages, copies);
ret = 0;
done_claimed: