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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-plugin-manager.h"
#include "uca-camera.h"
#include "ring-buffer.h"
typedef struct {
gint n_frames;
gdouble duration;
} Options;
static gchar *
get_camera_list (void)
{
GList *types;
GString *str;
UcaPluginManager *manager;
manager = uca_plugin_manager_new ();
types = uca_plugin_manager_get_available_cameras (manager);
str = g_string_new ("[ ");
if (types != NULL) {
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_string_append_printf (str, "%s ]", name);
else
g_string_append_printf (str, "%s, ", name);
}
}
else {
g_string_append (str, "]");
}
g_object_unref (manager);
return g_string_free (str, FALSE);
}
static void
store_frames (RingBuffer *buffer)
{
guint n_frames;
gsize size;
size = ring_buffer_get_block_size (buffer);
n_frames = ring_buffer_get_num_blocks (buffer);
for (gint i = 0; i < n_frames; i++) {
FILE *fp;
gchar *filename;
gpointer data;
filename = g_strdup_printf ("frame-%08i.raw", i);
fp = fopen(filename, "wb");
data = ring_buffer_get_pointer (buffer, i);
fwrite (data, size, 1, fp);
fclose (fp);
g_free (filename);
}
}
static GError *
record_frames (UcaCamera *camera, Options *opts)
{
guint roi_width;
guint roi_height;
guint bits;
guint pixel_size;
gsize size;
gint n_frames;
guint n_allocated;
GTimer *timer;
RingBuffer *buffer;
GError *error = NULL;
g_object_get (G_OBJECT (camera),
"roi-width", &roi_width,
"roi-height", &roi_height,
"sensor-bitdepth", &bits,
NULL);
pixel_size = bits == 8 ? 1 : 2;
size = roi_width * roi_height * pixel_size;
n_allocated = opts->n_frames > 0 ? opts->n_frames : 256;
buffer = ring_buffer_new (size, n_allocated);
timer = g_timer_new();
g_print("Start recording: %ix%i at %i bits/pixel\n",
roi_width, roi_height, bits);
uca_camera_start_recording(camera, &error);
if (error != NULL)
return error;
n_frames = 0;
g_timer_start(timer);
while (n_frames < opts->n_frames || g_timer_elapsed (timer, NULL) < opts->duration) {
uca_camera_grab (camera, ring_buffer_get_current_pointer (buffer), &error);
ring_buffer_proceed (buffer);
if (error != NULL)
return error;
n_frames++;
}
g_print ("Stop recording\n");
uca_camera_stop_recording (camera, &error);
store_frames (buffer);
ring_buffer_free (buffer);
g_timer_destroy (timer);
return error;
}
int
main (int argc, char *argv[])
{
GOptionContext *context;
UcaPluginManager *manager;
UcaCamera *camera;
gchar *cam_list;
GError *error = NULL;
static Options opts = {
.n_frames = -1,
.duration = -1.0
};
static GOptionEntry entries[] = {
{ "num-frames", 'n', 0, G_OPTION_ARG_INT, &opts.n_frames, "Number of frames to acquire", "N" },
{ "time", 't', 0, G_OPTION_ARG_DOUBLE, &opts.duration, "Duration in seconds", NULL },
{ NULL }
};
g_type_init();
cam_list = get_camera_list ();
context = g_option_context_new (cam_list);
g_option_context_add_main_entries (context, entries, NULL);
g_free (cam_list);
if (!g_option_context_parse (context, &argc, &argv, &error)) {
g_print ("Failed parsing arguments: %s\n", error->message);
exit (1);
}
if (argc < 2) {
g_print ("%s\n", g_option_context_get_help (context, TRUE, NULL));
exit (0);
}
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);
exit (1);
}
error = record_frames (camera, &opts);
if (error != NULL)
g_print ("Error: %s\n", error->message);
g_object_unref (camera);
return error != NULL ? 1 : 0;
}
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