/* Copyright (C) 2011, 2012 Matthias Vogelgesang (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 #include #include #include #include "uca-camera.h" typedef void (*GrabFrameFunc) (UcaCamera *camera, gpointer buffer, guint n_frames); static UcaCamera *camera = NULL; static void sigint_handler(int signal) { g_print ("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: benchmark ("); 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); } static void log_handler (const gchar *log_domain, GLogLevelFlags log_level, const gchar *message, gpointer user) { gsize n_written; GIOChannel *channel; GTimeZone *tz; GDateTime *date_time; gchar *new_message; GError *error = NULL; channel = user; tz = g_time_zone_new_local (); date_time = g_date_time_new_now (tz); new_message = g_strdup_printf ("[%s] %s\n", g_date_time_format (date_time, "%FT%H:%M:%S%z"), message); g_time_zone_unref (tz); g_date_time_unref (date_time); g_io_channel_write_chars (channel, new_message, strlen (new_message), &n_written, &error); g_assert_no_error (error); g_io_channel_flush (channel, &error); g_assert_no_error (error); g_free (new_message); } static void grab_frames_sync (UcaCamera *camera, gpointer buffer, guint n_frames) { GError *error = NULL; uca_camera_start_recording (camera, &error); for (guint i = 0; i < n_frames; i++) { uca_camera_grab(camera, &buffer, &error); if (error != NULL) { g_warning ("Error grabbing frame %02i/%i: `%s'", i, n_frames, error->message); g_error_free (error); error = NULL; } } uca_camera_stop_recording (camera, &error); } static void grab_callback (gpointer data, gpointer user_data) { guint *n_acquired_frames = user_data; *n_acquired_frames += 1; } static void grab_frames_async (UcaCamera *camera, gpointer buffer, guint n_frames) { GError *error = NULL; guint n_acquired_frames = 0; uca_camera_set_grab_func (camera, grab_callback, &n_acquired_frames); uca_camera_start_recording (camera, &error); /* * Behold! Spinlooping is probably a bad idea but nowadays single core * machines are relatively rare. */ while (n_acquired_frames < n_frames) ; uca_camera_stop_recording (camera, &error); } static void benchmark_method (UcaCamera *camera, gpointer buffer, GrabFrameFunc func, guint n_runs, guint n_frames, guint n_bytes) { GTimer *timer; gdouble fps; gdouble bandwidth; gdouble total_time = 0.0; GError *error = NULL; g_print ("%-10i%-10i", n_frames, n_runs); timer = g_timer_new (); g_assert_no_error (error); for (guint run = 0; run < n_runs; run++) { g_message ("Start run %i of %i", run, n_runs); g_timer_start (timer); func (camera, buffer, n_frames); g_timer_stop (timer); total_time += g_timer_elapsed (timer, NULL); } g_assert_no_error (error); fps = n_runs * n_frames / total_time; bandwidth = n_bytes * fps / 1024 / 1024; g_print ("%-16.2f%-16.2f\n", fps, bandwidth); g_timer_destroy (timer); } static void benchmark (UcaCamera *camera) { const guint n_runs = 3; const guint n_frames = 100; guint sensor_width; guint sensor_height; guint roi_width; guint roi_height; guint bits; guint n_bytes_per_pixel; guint n_bytes; gdouble exposure = 0.001; gpointer buffer; g_object_set (G_OBJECT (camera), "exposure-time", exposure, NULL); g_object_get (G_OBJECT (camera), "sensor-width", &sensor_width, "sensor-height", &sensor_height, "sensor-bitdepth", &bits, "roi-width", &roi_width, "roi-height", &roi_height, "exposure-time", &exposure, NULL); g_print ("# --- General information ---\n"); g_print ("# Sensor size: %ix%i\n", sensor_width, sensor_height); g_print ("# ROI size: %ix%i\n", roi_width, roi_height); g_print ("# Exposure time: %fs\n", exposure); /* Synchronous frame acquisition */ g_print ("# %-10s%-10s%-10s%-16s%-16s\n", "type", "n_frames", "n_runs", "frames/s", "MiB/s"); g_print (" %-10s", "sync"); g_message ("Start synchronous benchmark"); n_bytes_per_pixel = bits > 8 ? 2 : 1; n_bytes = roi_width * roi_height * n_bytes_per_pixel; buffer = g_malloc0(n_bytes); benchmark_method (camera, buffer, grab_frames_sync, n_runs, n_frames, n_bytes); /* Asynchronous frame acquisition */ g_object_set (G_OBJECT(camera), "transfer-asynchronously", TRUE, NULL); g_message ("Start asynchronous benchmark"); g_print (" %-10s", "async"); benchmark_method (camera, buffer, grab_frames_async, n_runs, n_frames, n_bytes); g_free (buffer); } int main (int argc, char *argv[]) { GIOChannel *log_channel; GError *error = NULL; (void) signal (SIGINT, sigint_handler); if (argc < 2) { print_usage(); return 1; } log_channel = g_io_channel_new_file ("error.log", "a+", &error); g_assert_no_error (error); g_log_set_handler (NULL, G_LOG_LEVEL_MASK, log_handler, log_channel); g_type_init(); camera = uca_camera_new(argv[1], &error); if (camera == NULL) { g_error ("Initialization: %s", error->message); return 1; } benchmark (camera); g_object_unref (camera); g_io_channel_shutdown (log_channel, TRUE, &error); g_assert_no_error (error); return 0; }