02-multiple-acquisition-main-thread.c

/* SPDX-License-Identifier:Unlicense */

/* Aravis header */

#include <arv.h>

/* Standard headers */

#include <stdlib.h>
#include <stdio.h>

/*
 * Connect to the first available camera, then acquire 10 buffers.
 */

int
main (int argc, char **argv)
{
	ArvCamera *camera;
	GError *error = NULL;

	/* Connect to the first available camera */
	camera = arv_camera_new (NULL, &error);

	if (ARV_IS_CAMERA (camera)) {
		ArvStream *stream = NULL;

		printf ("Found camera '%s'\n", arv_camera_get_model_name (camera, NULL));

		arv_camera_set_acquisition_mode (camera, ARV_ACQUISITION_MODE_CONTINUOUS, &error);

		if (error == NULL)
			/* Create the stream object without callback */
			stream = arv_camera_create_stream (camera, NULL, NULL, &error);

		if (ARV_IS_STREAM (stream)) {
			int i;
			size_t payload;

			/* Retrieve the payload size for buffer creation */
			payload = arv_camera_get_payload (camera, &error);
			if (error == NULL) {
				/* Insert some buffers in the stream buffer pool */
				for (i = 0; i < 2; i++)
					arv_stream_push_buffer (stream, arv_buffer_new (payload, NULL));
			}

			if (error == NULL)
				/* Start the acquisition */
				arv_camera_start_acquisition (camera, &error);

			if (error == NULL) {
				/* Retrieve 10 buffers */
				for (i = 0; i < 10; i++) {
					ArvBuffer *buffer;

					buffer = arv_stream_pop_buffer (stream);
					if (ARV_IS_BUFFER (buffer)) {
						/* Display some informations about the retrieved buffer */
						printf ("Acquired %d×%d buffer\n",
							arv_buffer_get_image_width (buffer),
							arv_buffer_get_image_height (buffer));
						/* Don't destroy the buffer, but put it back into the buffer pool */
						arv_stream_push_buffer (stream, buffer);
					}
				}
			}

			if (error == NULL)
				/* Stop the acquisition */
				arv_camera_stop_acquisition (camera, &error);

			/* Destroy the stream object */
			g_clear_object (&stream);
		}

		/* Destroy the camera instance */
		g_clear_object (&camera);
	}

	if (error != NULL) {
		/* En error happened, display the correspdonding message */
		printf ("Error: %s\n", error->message);
		return EXIT_FAILURE;
	}

	return EXIT_SUCCESS;
}