/*
  This file is part of Ingen.
  Copyright 2007-2016 David Robillard <http://drobilla.net/>

  Ingen is free software: you can redistribute it and/or modify it under the
  terms of the GNU Affero General Public License as published by the Free
  Software Foundation, either version 3 of the License, or any later version.

  Ingen 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 Affero General Public License for details.

  You should have received a copy of the GNU Affero General Public License
  along with Ingen.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef INGEN_ENGINE_LV2RESIZEFEATURE_HPP
#define INGEN_ENGINE_LV2RESIZEFEATURE_HPP

#include "BlockImpl.hpp"
#include "Buffer.hpp"
#include "PortImpl.hpp"

#include "ingen/LV2Features.hpp"
#include "lv2/resize-port/resize-port.h"

#include <memory>

namespace ingen {
namespace server {

struct ResizeFeature : public ingen::LV2Features::Feature {
	static LV2_Resize_Port_Status resize_port(
		LV2_Resize_Port_Feature_Data data,
		uint32_t                     index,
		size_t                       size) {
		BlockImpl* block = (BlockImpl*)data;
		PortImpl*  port = block->port_impl(index);
		if (block->context() == Context::ID::MESSAGE) {
			port->buffer(0)->resize(size);
			port->connect_buffers();
			return LV2_RESIZE_PORT_SUCCESS;
		}
		return LV2_RESIZE_PORT_ERR_UNKNOWN;
	}

	const char* uri() const { return LV2_RESIZE_PORT_URI; }

	std::shared_ptr<LV2_Feature> feature(World& w, Node* n) {
		BlockImpl* block = dynamic_cast<BlockImpl*>(n);
		if (!block) {
			return nullptr;
		}
		LV2_Resize_Port_Resize* data
			= (LV2_Resize_Port_Resize*)malloc(sizeof(LV2_Resize_Port_Resize));
		data->data   = block;
		data->resize = &resize_port;
		LV2_Feature* f = (LV2_Feature*)malloc(sizeof(LV2_Feature));
		f->URI  = LV2_RESIZE_PORT_URI;
		f->data = data;
		return std::shared_ptr<LV2_Feature>(f, &free_feature);
	}
};

} // namespace server
} // namespace ingen

#endif // INGEN_ENGINE_LV2RESIZEFEATURE_HPP