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Diffstat (limited to 'test/perf-overhead.c')
-rw-r--r-- | test/perf-overhead.c | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/test/perf-overhead.c b/test/perf-overhead.c deleted file mode 100644 index 20ca6c3..0000000 --- a/test/perf-overhead.c +++ /dev/null @@ -1,143 +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-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 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[]) -{ - GError *error = NULL; - (void) signal(SIGINT, sigint_handler); - - g_type_init(); - camera = uca_camera_new("mock", &error); - - if (camera == NULL) { - g_print("Couldn't initialize camera\n"); - return 1; - } - - test_synchronous_operation(camera); - g_print("\n"); - test_asynchronous_operation(camera); - - g_object_unref(camera); - - return error != NULL ? 1 : 0; -} |