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arvroitest.c
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arvroitest.c
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#include <arv.h>
#include <arvstr.h>
#include <stdlib.h>
#include <signal.h>
#include <stdio.h>
#define N_BUFFERS 20
#define WIDTH_MIN 100
#define HEIGHT_MIN 100
#define WIDTH_MAX 600
#define HEIGHT_MAX 600
#define SIZE_INC 20
typedef struct {
ArvCamera *camera;
ArvStream *stream;
GMainLoop *main_loop;
int buffer_count;
int width, height;
} ApplicationData;
static gboolean cancel = FALSE;
static void
set_cancel (int signal)
{
cancel = TRUE;
}
static void
new_buffer_cb (ArvStream *stream, ApplicationData *data)
{
ArvBuffer *buffer;
buffer = arv_stream_try_pop_buffer (stream);
if (buffer != NULL) {
if (arv_buffer_get_status (buffer) == ARV_BUFFER_STATUS_SUCCESS)
data->buffer_count++;
if (arv_buffer_get_image_width (buffer) != data->width ||
arv_buffer_get_image_height (buffer) != data->height)
printf ("Size error! %dx%d (expected: %dx%d)\n",
arv_buffer_get_image_width (buffer),
arv_buffer_get_image_height (buffer),
data->width,
data->height);
/* Image processing here */
arv_stream_push_buffer (stream, buffer);
}
}
static gboolean
framerate_task_cb (void *abstract_data)
{
ApplicationData *data = abstract_data;
printf ("Frame rate = %g Hz\n", data->buffer_count / 10.0);
data->buffer_count = 0;
return TRUE;
}
static gboolean
check_cancel_task_cb (void *abstract_data)
{
ApplicationData *data = abstract_data;
if (cancel) {
g_main_loop_quit (data->main_loop);
return FALSE;
}
return TRUE;
}
static gboolean
switch_roi (gpointer user_data)
{
ApplicationData *data = user_data;
gint width;
gint height;
gboolean success;
success = arv_camera_stop_acquisition (data->camera, NULL);
g_assert (success);
data->width += SIZE_INC;
if (data->width > WIDTH_MAX)
data->width = WIDTH_MIN;
data->height += SIZE_INC;
if (data->height > HEIGHT_MAX)
data->height = HEIGHT_MIN;
arv_camera_set_region (data->camera, 0, 0, data->width, data->height, NULL);
arv_camera_get_region (data->camera, NULL, NULL, &width, &height, NULL);
g_assert (width == data->width);
g_assert (height == data->height);
printf ("image size set to %dx%d\n", width, height);
success = arv_camera_start_acquisition (data->camera, NULL);
g_assert (success);
return TRUE;
}
int
main (int argc, char **argv)
{
ApplicationData data;
GError *error = NULL;
const char *camera_name = NULL;
int i;
data.buffer_count = 0;
data.width = WIDTH_MIN;
data.height = HEIGHT_MIN;
if (argc > 2) {
printf ("Usage: arv-roi-test <camera-name>\n");
return EXIT_FAILURE;
}
if (argc == 1) {
g_print ("Looking for the first available camera\n");
} else {
camera_name = argv[1];
g_print ("Looking for camera '%s'\n", camera_name);
}
data.camera = arv_camera_new (camera_name, &error);
if (ARV_IS_CAMERA (data.camera)) {
void (*old_sigint_handler)(int);
gint max_payload;
gint x, y, width, height;
guint64 n_completed_buffers;
guint64 n_failures;
guint64 n_underruns;
arv_camera_set_region (data.camera, 0, 0, WIDTH_MAX, HEIGHT_MAX, NULL);
max_payload = arv_camera_get_payload (data.camera, NULL);
arv_camera_set_frame_rate (data.camera, 20.0, NULL);
arv_camera_get_region (data.camera, &x, &y, &width, &height, NULL);
arv_camera_set_region (data.camera, 0, 0, data.width, data.height, NULL);
printf ("vendor name = %s\n", arv_camera_get_vendor_name (data.camera, NULL));
printf ("model name = %s\n", arv_camera_get_model_name (data.camera, NULL));
printf ("device id = %s\n", arv_camera_get_device_id (data.camera, NULL));
printf ("image x = %d\n", x);
printf ("image y = %d\n", y);
printf ("image width = %d\n", width);
printf ("image height = %d\n", height);
data.stream = arv_camera_create_stream (data.camera, NULL, NULL, &error);
if (ARV_IS_STREAM (data.stream)) {
g_signal_connect (data.stream, "new-buffer", G_CALLBACK (new_buffer_cb), &data);
arv_stream_set_emit_signals (data.stream, TRUE);
for (i = 0; i < N_BUFFERS; i++)
arv_stream_push_buffer (data.stream, arv_buffer_new (max_payload, NULL));
arv_camera_set_acquisition_mode (data.camera, ARV_ACQUISITION_MODE_CONTINUOUS, NULL);
arv_camera_start_acquisition (data.camera, NULL);
data.main_loop = g_main_loop_new (NULL, FALSE);
old_sigint_handler = signal (SIGINT, set_cancel);
g_timeout_add_seconds (10, framerate_task_cb, &data);
g_timeout_add_seconds (1, check_cancel_task_cb, &data);
g_timeout_add (697, switch_roi, &data);
g_main_loop_run (data.main_loop);
signal (SIGINT, old_sigint_handler);
g_main_loop_unref (data.main_loop);
arv_stream_get_statistics (data.stream, &n_completed_buffers, &n_failures, &n_underruns);
g_print ("Completed buffers = %" G_GUINT64_FORMAT "\n", n_completed_buffers);
g_print ("Failures = %" G_GUINT64_FORMAT "\n", n_failures);
g_print ("Underruns = %" G_GUINT64_FORMAT "\n", n_underruns);
arv_camera_stop_acquisition (data.camera, NULL);
arv_stream_set_emit_signals (data.stream, FALSE);
g_object_unref (data.stream);
} else {
printf ("Can't create stream thread%s%s\n",
error != NULL ? ": " : "",
error != NULL ? error->message : "");
g_clear_error (&error);
}
g_object_unref (data.camera);
} else {
printf ("No camera found%s%s\n",
error != NULL ? ": " : "",
error != NULL ? error->message : "");
g_clear_error (&error);
}
return 0;
}