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/* Copyright (C) 2011, 2012 Matthias Vogelgesang <matthias.vogelgesang@kit.edu>
(Karlsruhe Institute of Technology)
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
This library 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 Lesser General Public License for more
details.
You should have received a copy of the GNU Lesser General Public License along
with this library; if not, write to the Free Software Foundation, Inc., 51
Franklin St, Fifth Floor, Boston, MA 02110, USA */
#include <glib-object.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include "uca-camera.h"
static UcaCamera *camera = NULL;
static void sigint_handler(int signal)
{
printf("Closing down libuca\n");
uca_camera_stop_recording(camera, NULL);
g_object_unref(camera);
exit(signal);
}
static void print_usage(void)
{
gchar **types;
g_print("Usage: grab (");
types = uca_camera_get_types();
for (guint i = 0; types[i] != NULL; i++) {
if (types[i+1] == NULL)
g_print("%s)", types[i]);
else
g_print("%s | ", types[i]);
}
g_print("\n");
g_strfreev(types);
}
int main(int argc, char *argv[])
{
GError *error = NULL;
(void) signal(SIGINT, sigint_handler);
guint sensor_width, sensor_height;
guint roi_width, roi_height, roi_x, roi_y, roi_width_multiplier, roi_height_multiplier;
guint bits;
gchar *name;
if (argc < 2) {
print_usage();
return 1;
}
g_type_init();
camera = uca_camera_new(argv[1], &error);
if (camera == NULL) {
g_print("Error during initialization: %s\n", error->message);
return 1;
}
g_object_get(G_OBJECT(camera),
"sensor-width", &sensor_width,
"sensor-height", &sensor_height,
"name", &name,
NULL);
g_object_set(G_OBJECT(camera),
"exposure-time", 0.001,
"roi-x0", 0,
"roi-y0", 0,
"roi-width", 1000,
"roi-height", sensor_height,
NULL);
g_object_get(G_OBJECT(camera),
"roi-width", &roi_width,
"roi-height", &roi_height,
"roi-width-multiplier", &roi_width_multiplier,
"roi-height-multiplier", &roi_height_multiplier,
"roi-x0", &roi_x,
"roi-y0", &roi_y,
"sensor-bitdepth", &bits,
NULL);
g_print("Camera: %s\n", name);
g_free(name);
g_print("Sensor: %ix%i px\n", sensor_width, sensor_height);
g_print("ROI: %ix%i @ (%i, %i), steps: %i, %i\n",
roi_width, roi_height, roi_x, roi_y, roi_width_multiplier, roi_height_multiplier);
const int pixel_size = bits == 8 ? 1 : 2;
gpointer buffer = g_malloc0(roi_width * roi_height * pixel_size);
gchar filename[FILENAME_MAX];
GTimer *timer = g_timer_new();
for (int i = 0; i < 1; i++) {
gint counter = 0;
g_print("Start recording\n");
uca_camera_start_recording(camera, &error);
g_assert_no_error(error);
while (counter < 2) {
g_print(" grab frame ... ");
g_timer_start(timer);
uca_camera_grab(camera, &buffer, &error);
if (error != NULL) {
g_print("\nError: %s\n", error->message);
goto cleanup;
}
g_timer_stop(timer);
g_print("done (took %3.5fs)\n", g_timer_elapsed(timer, NULL));
snprintf(filename, FILENAME_MAX, "frame-%08i.raw", counter++);
FILE *fp = fopen(filename, "wb");
fwrite(buffer, roi_width * roi_height, pixel_size, fp);
fclose(fp);
}
g_print("Stop recording\n");
uca_camera_stop_recording(camera, &error);
g_assert_no_error(error);
}
g_timer_destroy(timer);
cleanup:
uca_camera_stop_recording(camera, NULL);
g_object_unref(camera);
g_free(buffer);
return error != NULL ? 1 : 0;
}
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