/* save to rad
 *
 * 2/12/11
 * 	- wrap a class around the rad writer
 * 23/5/16
 *  	- split into file and buffer save classes
 */

/*

	This file is part of VIPS.

	VIPS is free software; you can redistribute it and/or modify
	it under the terms of the GNU Lesser 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 Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser 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

 */

/*

	These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk

 */

/*
#define DEBUG_VERBOSE
#define DEBUG
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <glib/gi18n-lib.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <vips/vips.h>

#include "pforeign.h"

#ifdef HAVE_RADIANCE

typedef struct _VipsForeignSaveRad {
	VipsForeignSave parent_object;

} VipsForeignSaveRad;

typedef VipsForeignSaveClass VipsForeignSaveRadClass;

G_DEFINE_ABSTRACT_TYPE(VipsForeignSaveRad, vips_foreign_save_rad,
	VIPS_TYPE_FOREIGN_SAVE);

/* Save a bit of typing.
 */
#define UC VIPS_FORMAT_UCHAR
#define C VIPS_FORMAT_CHAR
#define US VIPS_FORMAT_USHORT
#define S VIPS_FORMAT_SHORT
#define UI VIPS_FORMAT_UINT
#define I VIPS_FORMAT_INT
#define F VIPS_FORMAT_FLOAT
#define X VIPS_FORMAT_COMPLEX
#define D VIPS_FORMAT_DOUBLE
#define DX VIPS_FORMAT_DPCOMPLEX

static VipsBandFormat vips_foreign_save_rad_format_table[10] = {
	/* Band format:  UC C  US S  UI I  F  X  D  DX */
	/* Promotion: */ F, F, F, F, F, F, F, F, F, F
};

static void
vips_foreign_save_rad_class_init(VipsForeignSaveRadClass *class)
{
	VipsObjectClass *object_class = (VipsObjectClass *) class;
	VipsForeignClass *foreign_class = (VipsForeignClass *) class;
	VipsForeignSaveClass *save_class = (VipsForeignSaveClass *) class;

	object_class->nickname = "radsave_base";
	object_class->description = _("save Radiance");

	foreign_class->suffs = vips__rad_suffs;

	save_class->saveable = VIPS_SAVEABLE_RGB;
	save_class->format_table = vips_foreign_save_rad_format_table;
	save_class->coding[VIPS_CODING_NONE] = FALSE;
	save_class->coding[VIPS_CODING_RAD] = TRUE;
}

static void
vips_foreign_save_rad_init(VipsForeignSaveRad *rad)
{
}

typedef struct _VipsForeignSaveRadFile {
	VipsForeignSaveRad parent_object;

	char *filename;
} VipsForeignSaveRadFile;

typedef VipsForeignSaveRadClass VipsForeignSaveRadFileClass;

G_DEFINE_TYPE(VipsForeignSaveRadFile, vips_foreign_save_rad_file,
	vips_foreign_save_rad_get_type());

static int
vips_foreign_save_rad_file_build(VipsObject *object)
{
	VipsForeignSave *save = (VipsForeignSave *) object;
	VipsForeignSaveRadFile *file = (VipsForeignSaveRadFile *) object;

	VipsTarget *target;

	if (VIPS_OBJECT_CLASS(vips_foreign_save_rad_file_parent_class)->build(object))
		return -1;

	if (!(target = vips_target_new_to_file(file->filename)))
		return -1;
	if (vips__rad_save(save->ready, target)) {
		VIPS_UNREF(target);
		return -1;
	}
	VIPS_UNREF(target);

	return 0;
}

static void
vips_foreign_save_rad_file_class_init(VipsForeignSaveRadFileClass *class)
{
	GObjectClass *gobject_class = G_OBJECT_CLASS(class);
	VipsObjectClass *object_class = (VipsObjectClass *) class;

	gobject_class->set_property = vips_object_set_property;
	gobject_class->get_property = vips_object_get_property;

	object_class->nickname = "radsave";
	object_class->description = _("save image to Radiance file");
	object_class->build = vips_foreign_save_rad_file_build;

	VIPS_ARG_STRING(class, "filename", 1,
		_("Filename"),
		_("Filename to save to"),
		VIPS_ARGUMENT_REQUIRED_INPUT,
		G_STRUCT_OFFSET(VipsForeignSaveRadFile, filename),
		NULL);
}

static void
vips_foreign_save_rad_file_init(VipsForeignSaveRadFile *file)
{
}

typedef struct _VipsForeignSaveRadTarget {
	VipsForeignSaveRad parent_object;

	VipsTarget *target;
} VipsForeignSaveRadTarget;

typedef VipsForeignSaveRadClass VipsForeignSaveRadTargetClass;

G_DEFINE_TYPE(VipsForeignSaveRadTarget, vips_foreign_save_rad_target,
	vips_foreign_save_rad_get_type());

static int
vips_foreign_save_rad_target_build(VipsObject *object)
{
	VipsForeignSave *save = (VipsForeignSave *) object;
	VipsForeignSaveRadTarget *target = (VipsForeignSaveRadTarget *) object;

	if (VIPS_OBJECT_CLASS(vips_foreign_save_rad_target_parent_class)
			->build(object))
		return -1;

	if (vips__rad_save(save->ready, target->target))
		return -1;

	return 0;
}

static void
vips_foreign_save_rad_target_class_init(VipsForeignSaveRadTargetClass *class)
{
	GObjectClass *gobject_class = G_OBJECT_CLASS(class);
	VipsObjectClass *object_class = (VipsObjectClass *) class;

	gobject_class->set_property = vips_object_set_property;
	gobject_class->get_property = vips_object_get_property;

	object_class->nickname = "radsave_target";
	object_class->description = _("save image to Radiance target");
	object_class->build = vips_foreign_save_rad_target_build;

	VIPS_ARG_OBJECT(class, "target", 1,
		_("Target"),
		_("Target to save to"),
		VIPS_ARGUMENT_REQUIRED_INPUT,
		G_STRUCT_OFFSET(VipsForeignSaveRadTarget, target),
		VIPS_TYPE_TARGET);
}

static void
vips_foreign_save_rad_target_init(VipsForeignSaveRadTarget *target)
{
}

typedef struct _VipsForeignSaveRadBuffer {
	VipsForeignSaveRad parent_object;

	VipsArea *buf;
} VipsForeignSaveRadBuffer;

typedef VipsForeignSaveRadClass VipsForeignSaveRadBufferClass;

G_DEFINE_TYPE(VipsForeignSaveRadBuffer, vips_foreign_save_rad_buffer,
	vips_foreign_save_rad_get_type());

static int
vips_foreign_save_rad_buffer_build(VipsObject *object)
{
	VipsForeignSave *save = (VipsForeignSave *) object;

	VipsTarget *target;
	VipsBlob *blob;

	if (VIPS_OBJECT_CLASS(vips_foreign_save_rad_buffer_parent_class)
			->build(object))
		return -1;

	if (!(target = vips_target_new_to_memory()))
		return -1;

	if (vips__rad_save(save->ready, target)) {
		VIPS_UNREF(target);
		return -1;
	}

	g_object_get(target, "blob", &blob, NULL);
	g_object_set(save, "buffer", blob, NULL);
	vips_area_unref(VIPS_AREA(blob));

	VIPS_UNREF(target);

	return 0;
}

static void
vips_foreign_save_rad_buffer_class_init(VipsForeignSaveRadBufferClass *class)
{
	GObjectClass *gobject_class = G_OBJECT_CLASS(class);
	VipsObjectClass *object_class = (VipsObjectClass *) class;

	gobject_class->set_property = vips_object_set_property;
	gobject_class->get_property = vips_object_get_property;

	object_class->nickname = "radsave_buffer";
	object_class->description = _("save image to Radiance buffer");
	object_class->build = vips_foreign_save_rad_buffer_build;

	VIPS_ARG_BOXED(class, "buffer", 1,
		_("Buffer"),
		_("Buffer to save to"),
		VIPS_ARGUMENT_REQUIRED_OUTPUT,
		G_STRUCT_OFFSET(VipsForeignSaveRadBuffer, buf),
		VIPS_TYPE_BLOB);
}

static void
vips_foreign_save_rad_buffer_init(VipsForeignSaveRadBuffer *buffer)
{
}

#endif /*HAVE_RADIANCE*/

/**
 * vips_radsave: (method)
 * @in: image to save
 * @filename: file to write to
 * @...: %NULL-terminated list of optional named arguments
 *
 * Write a VIPS image in Radiance (HDR) format.
 *
 * Sections of this reader from Greg Ward and Radiance with kind permission.
 *
 * See also: vips_image_write_to_file().
 *
 * Returns: 0 on success, -1 on error.
 */
int
vips_radsave(VipsImage *in, const char *filename, ...)
{
	va_list ap;
	int result;

	va_start(ap, filename);
	result = vips_call_split("radsave", ap, in, filename);
	va_end(ap);

	return result;
}

/**
 * vips_radsave_buffer: (method)
 * @in: image to save
 * @buf: (array length=len) (element-type guint8): return output buffer here
 * @len: (type gsize): return output length here
 * @...: %NULL-terminated list of optional named arguments
 *
 * As vips_radsave(), but save to a memory buffer.
 *
 * The address of the buffer is returned in @buf, the length of the buffer in
 * @len. You are responsible for freeing the buffer with g_free() when you
 * are done with it.
 *
 * See also: vips_radsave(), vips_image_write_to_file().
 *
 * Returns: 0 on success, -1 on error.
 */
int
vips_radsave_buffer(VipsImage *in, void **buf, size_t *len, ...)
{
	va_list ap;
	VipsArea *area;
	int result;

	area = NULL;

	va_start(ap, len);
	result = vips_call_split("radsave_buffer", ap, in, &area);
	va_end(ap);

	if (!result &&
		area) {
		if (buf) {
			*buf = area->data;
			area->free_fn = NULL;
		}
		if (len)
			*len = area->length;

		vips_area_unref(area);
	}

	return result;
}

/**
 * vips_radsave_target: (method)
 * @in: image to save
 * @target: save image to this target
 * @...: %NULL-terminated list of optional named arguments
 *
 * As vips_radsave(), but save to a target.
 *
 * See also: vips_radsave().
 *
 * Returns: 0 on success, -1 on error.
 */
int
vips_radsave_target(VipsImage *in, VipsTarget *target, ...)
{
	va_list ap;
	int result;

	va_start(ap, target);
	result = vips_call_split("radsave_target", ap, in, target);
	va_end(ap);

	return result;
}
