diff options
Diffstat (limited to 'tools/perf-overhead.c')
| -rw-r--r-- | tools/perf-overhead.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/tools/perf-overhead.c b/tools/perf-overhead.c deleted file mode 100644 index 7661dbc..0000000 --- a/tools/perf-overhead.c +++ /dev/null @@ -1,181 +0,0 @@ -/* 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 <string.h> -#include "uca-plugin-manager.h" -#include "uca-camera.h" - -#define handle_error(errno) {if ((errno) != UCA_NO_ERROR) printf("error at <%s:%i>\n", \ - __FILE__, __LINE__);} - -typedef struct { - guint counter; - gsize size; - gpointer destination; -} thread_data; - -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) -{ - GList *types; - UcaPluginManager *manager; - - manager = uca_plugin_manager_new (); - g_print ("Usage: benchmark [ "); - types = uca_plugin_manager_get_available_cameras (manager); - - if (types == NULL) { - g_print ("] -- no camera plugin found\n"); - return; - } - - for (GList *it = g_list_first (types); it != NULL; it = g_list_next (it)) { - gchar *name = (gchar *) it->data; - if (g_list_next (it) == NULL) - g_print ("%s ]\n", name); - else - g_print ("%s, ", name); - } -} - -static void -test_synchronous_operation (UcaCamera *camera) -{ - GError *error = NULL; - guint width, height, bits; - g_object_get (G_OBJECT (camera), - "sensor-width", &width, - "sensor-height", &height, - "sensor-bitdepth", &bits, - NULL); - - const int pixel_size = bits == 8 ? 1 : 2; - const gsize size = width * height * pixel_size; - const guint n_trials = 10000; - gpointer buffer = g_malloc0(size); - - uca_camera_start_recording (camera, &error); - GTimer *timer = g_timer_new (); - - for (guint n = 0; n < n_trials; n++) - uca_camera_grab (camera, &buffer, &error); - - gdouble total_time = g_timer_elapsed (timer, NULL); - g_timer_stop (timer); - - g_print ("Synchronous data transfer\n"); - g_print (" Bandwidth: %3.2f MB/s\n", size * n_trials / 1024. / 1024. / total_time); - g_print (" Throughput: %3.2f frames/s\n", n_trials / total_time); - - uca_camera_stop_recording (camera, &error); - g_free (buffer); - g_timer_destroy (timer); -} - -static void -grab_func (gpointer data, gpointer user_data) -{ - static GStaticMutex mutex = G_STATIC_MUTEX_INIT; - - thread_data *d = (thread_data *) user_data; - g_memmove (d->destination, data, d->size); - g_static_mutex_lock (&mutex); - d->counter++; - g_static_mutex_unlock (&mutex); -} - -static void -test_asynchronous_operation (UcaCamera *camera) -{ - GError *error = NULL; - guint width, height, bits; - - g_object_get (G_OBJECT (camera), - "sensor-width", &width, - "sensor-height", &height, - "sensor-bitdepth", &bits, - NULL); - - const guint pixel_size = bits == 8 ? 1 : 2; - - thread_data d = { - .counter = 0, - .size = width * height * pixel_size, - .destination = g_malloc0(width * height * pixel_size) - }; - - g_object_set (G_OBJECT (camera), - "transfer-asynchronously", TRUE, - NULL); - - uca_camera_set_grab_func (camera, &grab_func, &d); - uca_camera_start_recording (camera, &error); - g_usleep (G_USEC_PER_SEC); - uca_camera_stop_recording (camera, &error); - - g_print ("Asynchronous data transfer\n"); - g_print (" Bandwidth: %3.2f MB/s\n", d.size * d.counter / 1024. / 1024.); - g_print (" Throughput: %i frames/s\n", d.counter); - - g_free (d.destination); -} - -int -main (int argc, char *argv[]) -{ - UcaPluginManager *manager; - GError *error = NULL; - (void) signal (SIGINT, sigint_handler); - - g_type_init (); - if (argc < 2) { - print_usage (); - return 1; - } - - manager = uca_plugin_manager_new (); - camera = uca_plugin_manager_get_camera (manager, argv[1], &error, NULL); - - if (camera == NULL) { - g_print ("Error during initialization: %s\n", error->message); - return 1; - } - - test_synchronous_operation (camera); - g_print ("\n"); - test_asynchronous_operation (camera); - - g_object_unref (camera); - g_object_unref (manager); - - return error != NULL ? 1 : 0; -} |