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/*
*/
#include <stdlib.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <stdarg.h>
#include <string.h>
#include <gphoto2/gphoto2.h>
#include "samples.h"
static void
errordumper(GPLogLevel level, const char *domain, const char *str, void *data) {
fprintf(stderr, "%s\n", str);
}
static struct queue_entry {
CameraFilePath path;
int offset;
} *queue = NULL;
static int nrofqueue=0;
static int nrdownloads=0;
static const char *buffer;
static int
wait_event_and_download (Camera *camera, int waittime, GPContext *context) {
CameraEventType evtype;
CameraFilePath *path;
void *data;
int retval;
struct timeval start, curtime;
gettimeofday (&start, NULL);
data = NULL;
if (nrofqueue)
waittime = 10; /* just drain the event queue */
while (1) {
int timediff;
gettimeofday (&curtime, NULL);
timediff = ((curtime.tv_sec - start.tv_sec)*1000)+((curtime.tv_usec - start.tv_usec)/1000);
if (timediff >= waittime)
break;
retval = gp_camera_wait_for_event(camera, waittime - timediff, &evtype, &data, context);
if (retval != GP_OK) {
fprintf (stderr, "return from waitevent in trigger sample with %d\n", retval);
return retval;
}
path = data;
switch (evtype) {
case GP_EVENT_CAPTURE_COMPLETE:
fprintf (stderr, "wait for event CAPTURE_COMPLETE\n");
break;
case GP_EVENT_UNKNOWN:
free(data);
break;
case GP_EVENT_TIMEOUT:
break;
case GP_EVENT_FOLDER_ADDED:
fprintf (stderr, "wait for event FOLDER_ADDED\n");
free(data);
break;
case GP_EVENT_FILE_CHANGED:
fprintf (stderr, "wait for event FILE_CHANGED\n");
free(data);
break;
case GP_EVENT_FILE_ADDED:
fprintf (stderr, "File %s / %s added to queue.\n", path->folder, path->name);
if (nrofqueue) {
struct queue_entry *q;
q = realloc(queue, sizeof(struct queue_entry)*(nrofqueue+1));
if (!q) return GP_ERROR_NO_MEMORY;
queue = q;
} else {
queue = malloc (sizeof(struct queue_entry));
if (!queue) return GP_ERROR_NO_MEMORY;
}
memcpy (&queue[nrofqueue].path, path, sizeof(CameraFilePath));
queue[nrofqueue].offset = 0;
nrofqueue++;
free(data);
break;
}
}
if (nrofqueue) {
unsigned long size;
int fd;
struct stat stbuf;
CameraFile *file;
retval = gp_file_new(&file);
fprintf(stderr,"camera getfile of %s / %s\n",
queue[0].path.folder,
queue[0].path.name
);
retval = gp_camera_file_get(camera, queue[0].path.folder, queue[0].path.name,
GP_FILE_TYPE_NORMAL, file, context);
if (retval != GP_OK) {
fprintf (stderr,"gp_camera_file_get failed: %d\n", retval);
gp_file_free (file);
return retval;
}
/* buffer is returned as pointer, not as a copy */
retval = gp_file_get_data_and_size (file, &buffer, &size);
if (retval != GP_OK) {
fprintf (stderr,"gp_file_get_data_and_size failed: %d\n", retval);
gp_file_free (file);
return retval;
}
if (-1 == stat(queue[0].path.name, &stbuf))
fd = creat(queue[0].path.name, 0644);
else
fd = open(queue[0].path.name, O_RDWR | O_BINARY, 0644);
if (fd == -1) {
perror(queue[0].path.name);
return GP_ERROR;
}
if (-1 == lseek(fd, 0, SEEK_SET))
perror("lseek");
if (-1 == write (fd, buffer, size))
perror("write");
close (fd);
gp_file_free (file); /* Note: this invalidates buffer. */
fprintf(stderr,"ending download %d, deleting file.\n", nrdownloads);
retval = gp_camera_file_delete(camera, queue[0].path.folder, queue[0].path.name, context);
memmove(&queue[0],&queue[1],sizeof(queue[0])*(nrofqueue-1));
nrofqueue--;
}
return GP_OK;
}
int
main(int argc, char **argv) {
Camera *camera;
int retval, nrcapture = 0;
struct timeval tval;
GPContext *context = sample_create_context();
gp_log_add_func(GP_LOG_ERROR, errordumper, NULL);
/*gp_log_add_func(GP_LOG_DATA, errordumper, NULL); */
gp_camera_new(&camera);
retval = gp_camera_init(camera, context);
if (retval != GP_OK) {
printf("gp_camera_init: %d\n", retval);
exit (1);
}
while (1) {
if ((time(NULL) & 1) == 1) {
fprintf(stderr,"triggering capture %d\n", ++nrcapture);
retval = gp_camera_trigger_capture (camera, context);
if ((retval != GP_OK) && (retval != GP_ERROR) && (retval != GP_ERROR_CAMERA_BUSY)) {
fprintf(stderr,"triggering capture had error %d\n", retval);
break;
}
fprintf (stderr, "done triggering\n");
}
/*fprintf(stderr,"waiting for events\n");*/
retval = wait_event_and_download(camera, 100, context);
if (retval != GP_OK)
break;
/*fprintf(stderr,"end waiting for events\n");*/
gettimeofday (&tval, NULL);
fprintf(stderr,"loop is at %d.%06d\n", (int)tval.tv_sec,(int)tval.tv_usec);
}
gp_camera_exit(camera, context);
return 0;
}
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