/*
 * CINELERRA
 * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include "1080to480.h"
#include "clip.h"
#include "bchash.h"
#include "filexml.h"
#include "bcdisplayinfo.h"
#include "keyframe.h"
#include "language.h"
#include "overlayframe.h"
#include "vframe.h"






#include <stdint.h>
#include <string.h>


REGISTER_PLUGIN(_1080to480Main)




_1080to480Config::_1080to480Config()
{
	first_field = 0;
}

int _1080to480Config::equivalent(_1080to480Config &that)
{
	return first_field == that.first_field;
}

void _1080to480Config::copy_from(_1080to480Config &that)
{
	first_field = that.first_field;
}

void _1080to480Config::interpolate(_1080to480Config &prev,
	_1080to480Config &next,
	long prev_frame,
	long next_frame,
	long current_frame)
{
	copy_from(prev);
}





_1080to480Window::_1080to480Window(_1080to480Main *client)
 : PluginClientWindow(client, 200, 100, 0, 0, 1)
{
	this->client = client;
}


_1080to480Window::~_1080to480Window()
{
}

void _1080to480Window::create_objects()
{
	int x = 10, y = 10;

	add_tool(odd_first = new _1080to480Option(client, this, 1, x, y, _("Odd field first")));
	y += 25;
	add_tool(even_first = new _1080to480Option(client, this, 0, x, y, _("Even field first")));

	show_window();
	flush();
}

int _1080to480Window::set_first_field(int first_field, int send_event)
{
	odd_first->update(first_field == 1);
	even_first->update(first_field == 0);


	if(send_event)
	{
		client->config.first_field = first_field;
		client->send_configure_change();
	}
	return 0;
}




_1080to480Option::_1080to480Option(_1080to480Main *client,
		_1080to480Window *window,
		int output,
		int x,
		int y,
		char *text)
 : BC_Radial(x,
 	y,
	client->config.first_field == output,
	text)
{
	this->client = client;
	this->window = window;
	this->output = output;
}

int _1080to480Option::handle_event()
{
	window->set_first_field(output, 1);
	return 1;
}










_1080to480Main::_1080to480Main(PluginServer *server)
 : PluginVClient(server)
{

	temp = 0;
}

_1080to480Main::~_1080to480Main()
{

	if(temp) delete temp;
}

const char* _1080to480Main::plugin_title() { return N_("1080 to 480"); }
int _1080to480Main::is_realtime() { return 1; }

NEW_WINDOW_MACRO(_1080to480Main, _1080to480Window)
LOAD_CONFIGURATION_MACRO(_1080to480Main, _1080to480Config)


#define TEMP_W 854
#define TEMP_H 480
#define OUT_ROWS 270

void _1080to480Main::reduce_field(VFrame *output, VFrame *input, int src_field, int dst_field)
{
	int w = input->get_w();
	int h = input->get_h();

	if(h > output->get_h()) h = output->get_h();
	if(w > output->get_w()) h = output->get_w();

#define REDUCE_MACRO(type, temp, components) \
for(int i = 0; i < OUT_ROWS; i++) \
{ \
	int in_number1 = dst_field * 2 + src_field + (int)(i * 2) * 2; \
	int in_number2 = in_number1 + 2; \
	int in_number3 = in_number2 + 2; \
	int in_number4 = in_number3 + 2; \
	int out_number = dst_field + i * 2; \
 \
	if(in_number1 >= h) in_number1 = h - 1; \
	if(in_number2 >= h) in_number2 = h - 1; \
	if(in_number3 >= h) in_number3 = h - 1; \
	if(in_number4 >= h) in_number4 = h - 1; \
	if(out_number >= h) out_number = h - 1; \
 \
	type *in_row1 = (type*)input->get_rows()[in_number1]; \
	type *in_row2 = (type*)input->get_rows()[in_number2]; \
	type *in_row3 = (type*)input->get_rows()[in_number3]; \
	type *in_row4 = (type*)input->get_rows()[in_number4]; \
	type *out_row = (type*)output->get_rows()[out_number]; \
 \
	for(int j = 0; j < w * components; j++) \
	{ \
		*out_row++ = ((temp)*in_row1++ +  \
			(temp)*in_row2++ +  \
			(temp)*in_row3++ +  \
			(temp)*in_row4++) / 4; \
	} \
}

	switch(input->get_color_model())
	{
		case BC_RGB888:
		case BC_YUV888:
			REDUCE_MACRO(unsigned char, int64_t, 3);
			break;
		case BC_RGB_FLOAT:
			REDUCE_MACRO(float, float, 3);
			break;
		case BC_RGBA8888:
		case BC_YUVA8888:
			REDUCE_MACRO(unsigned char, int64_t, 4);
			break;
		case BC_RGBA_FLOAT:
			REDUCE_MACRO(float, float, 4);
			break;
		case BC_RGB161616:
		case BC_YUV161616:
			REDUCE_MACRO(uint16_t, int64_t, 3);
			break;
		case BC_RGBA16161616:
		case BC_YUVA16161616:
			REDUCE_MACRO(uint16_t, int64_t, 4);
			break;
	}

}

int _1080to480Main::process_realtime(VFrame *input, VFrame *output)
{
	load_configuration();
	if(!temp)
	{
		temp = new VFrame(input->get_w(), input->get_h(), input->get_color_model(), 0);
		temp->clear_frame();
	}

	reduce_field(temp, input, config.first_field == 0 ? 0 : 1, 0);
	reduce_field(temp, input, config.first_field == 0 ? 1 : 0, 1);

	output->copy_from(temp);

	return 0;
}


void _1080to480Main::save_data(KeyFrame *keyframe)
{
	FileXML output;
	output.set_shared_output(keyframe->xbuf);
	output.tag.set_title("1080TO480");
	output.tag.set_property("FIRST_FIELD", config.first_field);
	output.append_tag();
	output.tag.set_title("/1080TO480");
	output.append_tag();
	output.append_newline();
	output.terminate_string();
}

void _1080to480Main::read_data(KeyFrame *keyframe)
{
	FileXML input;
	input.set_shared_input(keyframe->xbuf);

	while(!input.read_tag())
	{
		if(input.tag.title_is("1080TO480"))
		{
			config.first_field = input.tag.get_property("FIRST_FIELD", config.first_field);
		}
	}
}

void _1080to480Main::update_gui()
{
	if(thread)
	{
		load_configuration();
		_1080to480Window *window = (_1080to480Window *)thread->window;
		window->lock_window();
		window->set_first_field(config.first_field, 0);
		window->unlock_window();
	}
}