/*****************************************************************************
 *
 * utouch-frame - Touch Frame Library
 *
 * Copyright (C) 2010-2011 Canonical Ltd.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Authors:
 *      Henrik Rydberg <rydberg@bitmath.org>
 *
 ****************************************************************************/

#define MTDEV_NO_LEGACY_API

#include <utouch/frame-mtdev.h>
#include <mtdev.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>

struct frame_test {
	struct evemu_device *evemu;
	struct mtdev *mtdev;
	utouch_frame_handle fh;
};

static int init_evemu(struct frame_test *test, int fd)
{
	test->evemu = evemu_new(NULL);
	if (!test->evemu)
		return -1;
	return evemu_extract(test->evemu, fd);
}

static int init_mtdev(struct frame_test *test, int fd)
{
	test->mtdev = mtdev_new_open(fd);
	if (!test->mtdev)
		return -1;
	return 0;
}

static int init_frame(struct frame_test *test, int fd)
{
	test->fh = utouch_frame_new_engine(100, 32, 100);
	if (!test->fh)
		return -1;
	return utouch_frame_init_mtdev(test->fh, test->evemu);
}

static void destroy_all(struct frame_test *test)
{
	utouch_frame_delete_engine(test->fh);
	mtdev_close_delete(test->mtdev);
	evemu_delete(test->evemu);
	memset(test, 0, sizeof(*test));
}

static void report_frame(const struct utouch_frame *frame)
{
	int i;

	for (i = 0; i < frame->num_active; i++) {
		const struct utouch_contact *t = frame->active[i];

		fprintf(stderr, "touch %d\n", i);
		fprintf(stderr, "  slot:         %d\n", t->slot);
		fprintf(stderr, "  id:           %d\n", t->id);
		fprintf(stderr, "  tool_type:    %d\n", t->tool_type);
		fprintf(stderr, "  x:            %f\n", t->x);
		fprintf(stderr, "  y:            %f\n", t->y);
		fprintf(stderr, "  touch_major:  %f\n", t->touch_major);
		fprintf(stderr, "  touch_minor:  %f\n", t->touch_minor);
		fprintf(stderr, "  width_major:  %f\n", t->width_major);
		fprintf(stderr, "  width_minor:  %f\n", t->width_minor);
		fprintf(stderr, "  angle:        %f\n", t->orientation);
		fprintf(stderr, "  pressure:     %f\n", t->pressure);
		fprintf(stderr, "  distance:     %f\n", t->distance);
	}

	fprintf(stderr, "sync %d %ld %d %d %d\n",
		frame->num_active,
		frame->time,
		frame->sequence_id,
		frame->revision,
		frame->slot_revision);
}

static void loop_device(struct frame_test *test, int fd)
{
	const struct utouch_frame *frame;
	struct input_event ev;

	while (!mtdev_idle(test->mtdev, fd, 5000)) {
		while (mtdev_get(test->mtdev, fd, &ev, 1) > 0) {
			frame = utouch_frame_pump_mtdev(test->fh, &ev);
			if (frame)
				report_frame(frame);
		}
	}
}

static void report_device_caps(struct frame_test *test)
{
#ifdef INPUT_PROP_POINTER
	fprintf(stderr, "device props:\n");
	if (evemu_has_prop(test->evemu, INPUT_PROP_POINTER))
		fprintf(stderr, "\tpointer\n");
	if (evemu_has_prop(test->evemu, INPUT_PROP_DIRECT))
		fprintf(stderr, "\tdirect\n");
	if (evemu_has_prop(test->evemu, INPUT_PROP_BUTTONPAD))
		fprintf(stderr, "\tbuttonpad\n");
	if (evemu_has_prop(test->evemu, INPUT_PROP_SEMI_MT))
		fprintf(stderr, "\tsemi_mt\n");
#endif
	fprintf(stderr, "device mt events:\n");
	if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_SLOT))
		fprintf(stderr, "\tslot\n");
	if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_TOUCH_MAJOR))
		fprintf(stderr, "\ttouch_major\n");
	if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_TOUCH_MINOR))
		fprintf(stderr, "\ttouch_minor\n");
	if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_WIDTH_MAJOR))
		fprintf(stderr, "\twidth_major\n");
	if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_WIDTH_MINOR))
		fprintf(stderr, "\twidth_minor\n");
	if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_ORIENTATION))
		fprintf(stderr, "\torientation\n");
	if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_POSITION_X))
		fprintf(stderr, "\tposition_x\n");
	if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_POSITION_Y))
		fprintf(stderr, "\tposition_y\n");
	if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_TOOL_TYPE))
		fprintf(stderr, "\tposition_y\n");
	if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_TRACKING_ID))
		fprintf(stderr, "\ttracking_id\n");
	if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_PRESSURE))
		fprintf(stderr, "\tpressure\n");
	if (evemu_has_event(test->evemu, EV_ABS, ABS_MT_DISTANCE))
		fprintf(stderr, "\tdistance\n");
}

int main(int argc, char *argv[])
{
	struct frame_test test;
	int fd;

	if (argc < 2) {
		fprintf(stderr, "Usage: %s <device>\n", argv[0]);
		return -1;
	}

	fd = open(argv[1], O_RDONLY | O_NONBLOCK);
	if (fd < 0) {
		fprintf(stderr, "error: could not open device\n");
		return -1;
	}
	if (ioctl(fd, EVIOCGRAB, 1)) {
		fprintf(stderr, "error: could not grab the device\n");
		return -1;
	}

	if (init_evemu(&test, fd)) {
		fprintf(stderr, "error: could not describe device\n");
		return -1;
	}
	if (!utouch_frame_is_supported_mtdev(test.evemu)) {
		fprintf(stderr, "error: unsupported device\n");
		return -1;
	}

	fprintf(stderr, "device: %s\n", evemu_get_name(test.evemu));

	if (init_mtdev(&test, fd)) {
		fprintf(stderr, "error: could not init mtdev\n");
		return -1;
	}
	if (init_frame(&test, fd)) {
		fprintf(stderr, "error: could not init frame\n");
		return -1;
	}

	report_device_caps(&test);

	loop_device(&test, fd);

	destroy_all(&test);
	return 0;
}