neatvnc/examples/png-server.c

/*
 * Copyright (c) 2019 Andri Yngvason
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#include "neatvnc.h"

#include <stdio.h>
#include <uv.h>
#include <assert.h>
#include <pixman.h>

int read_png_file(struct nvnc_fb* fb, const char *filename);

void on_fb_req(struct nvnc_client *client, bool incremental,
	       uint16_t x, uint16_t y, uint16_t width, uint16_t height)
{
	if (incremental)
		return;

	struct nvnc *server = nvnc_get_server(client);
	assert(server);

	struct nvnc_fb *fb = nvnc_get_userdata(server);
	assert(fb);

	struct pixman_region16 region;
	pixman_region_init_rect(&region, 0, 0, fb->width, fb->height);
	nvnc_update_fb(server, fb, &region);
	pixman_region_fini(&region);
}

int main(int argc, char *argv[])
{
	const char *file = argv[1];

	if (!file) {
		printf("Missing argument\n");
		return 1;
	}

	struct nvnc_fb fb = { 0 };
	if (read_png_file(&fb, file) < 0) {
		printf("Failed to read png file\n");
		return 1;
	}

	fb.nvnc_modifier = NVNC_MOD_Y_INVERT;

	struct nvnc *server = nvnc_open("127.0.0.1", 5900);

	nvnc_set_dimensions(server, fb.width, fb.height, fb.fourcc_format);
	nvnc_set_name(server, file);
	nvnc_set_fb_req_fn(server, on_fb_req);
	nvnc_set_userdata(server, &fb);

	uv_run(uv_default_loop(), UV_RUN_DEFAULT);

	nvnc_close(server);
}