/*
 * Copyright 2011, Blender Foundation.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Contributor: 
 *		Jeroen Bakker 
 *		Monique Dewanchand
 *		Lukas Tönne
 */

#include "COM_OutputFileNode.h"
#include "COM_OutputFileOperation.h"
#include "COM_OutputFileMultiViewOperation.h"
#include "COM_ExecutionSystem.h"

#include "BKE_scene.h"

#include "BLI_path_util.h"

OutputFileNode::OutputFileNode(bNode *editorNode) : Node(editorNode)
{
	/* pass */
}

void OutputFileNode::convertToOperations(NodeConverter &converter, const CompositorContext &context) const
{
	NodeImageMultiFile *storage = (NodeImageMultiFile *)this->getbNode()->storage;
	const bool is_multiview = (context.getRenderData()->scemode & R_MULTIVIEW) != 0;
	
	if (!context.isRendering()) {
		/* only output files when rendering a sequence -
		 * otherwise, it overwrites the output files just
		 * scrubbing through the timeline when the compositor updates.
		 */
		return;
	}

	if (storage->format.imtype == R_IMF_IMTYPE_MULTILAYER) {
		const bool use_half_float = (storage->format.depth == R_IMF_CHAN_DEPTH_16);
		/* single output operation for the multilayer file */
		OutputOpenExrMultiLayerOperation *outputOperation;

		if (is_multiview && storage->format.views_format == R_IMF_VIEWS_MULTIVIEW) {
			outputOperation = new OutputOpenExrMultiLayerMultiViewOperation(
			        context.getRenderData(), context.getbNodeTree(), storage->base_path,
			        storage->format.exr_codec, use_half_float, context.getViewName());
		}
		else {
			outputOperation = new OutputOpenExrMultiLayerOperation(
		          context.getRenderData(), context.getbNodeTree(), storage->base_path,
		          storage->format.exr_codec, use_half_float, context.getViewName());
		}
		converter.addOperation(outputOperation);

		int num_inputs = getNumberOfInputSockets();
		bool previewAdded = false;
		for (int i = 0; i < num_inputs; ++i) {
			NodeInput *input = getInputSocket(i);
			NodeImageMultiFileSocket *sockdata = (NodeImageMultiFileSocket *)input->getbNodeSocket()->storage;
			
			/* note: layer becomes an empty placeholder if the input is not linked */
			outputOperation->add_layer(sockdata->layer, input->getDataType(), input->isLinked());
			
			converter.mapInputSocket(input, outputOperation->getInputSocket(i));
			
			if (!previewAdded) {
				converter.addNodeInputPreview(input);
				previewAdded = true;
			}
		}
	}
	else {  /* single layer format */
		int num_inputs = getNumberOfInputSockets();
		bool previewAdded = false;
		for (int i = 0; i < num_inputs; ++i) {
			NodeInput *input = getInputSocket(i);
			if (input->isLinked()) {
				NodeImageMultiFileSocket *sockdata = (NodeImageMultiFileSocket *)input->getbNodeSocket()->storage;
				ImageFormatData *format = (sockdata->use_node_format ? &storage->format : &sockdata->format);
				char path[FILE_MAX];

				/* combine file path for the input */
				BLI_join_dirfile(path, FILE_MAX, storage->base_path, sockdata->path);

				NodeOperation *outputOperation = NULL;

				if (is_multiview && format->views_format == R_IMF_VIEWS_MULTIVIEW) {
					outputOperation = new OutputOpenExrSingleLayerMultiViewOperation(
					        context.getRenderData(), context.getbNodeTree(), input->getDataType(), format, path,
					        context.getViewSettings(), context.getDisplaySettings(), context.getViewName());
				}
				else if ((!is_multiview) || (format->views_format == R_IMF_VIEWS_INDIVIDUAL)) {
					outputOperation = new OutputSingleLayerOperation(
					        context.getRenderData(), context.getbNodeTree(), input->getDataType(), format, path,
					        context.getViewSettings(), context.getDisplaySettings(), context.getViewName());
				}
				else { /* R_IMF_VIEWS_STEREO_3D */
					outputOperation = new OutputStereoOperation(
					        context.getRenderData(), context.getbNodeTree(), input->getDataType(), format, path,
					        sockdata->layer, context.getViewSettings(), context.getDisplaySettings(), context.getViewName());
				}

				converter.addOperation(outputOperation);
				converter.mapInputSocket(input, outputOperation->getInputSocket(0));

				if (!previewAdded) {
					converter.addNodeInputPreview(input);
					previewAdded = true;
				}
			}
		}
	}
}