/*

	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
 */

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

#include <stdio.h>

#include <vips/vips.h>
#include <vips/vips7compat.h>
#include <vips/internal.h>

#include "../foreign/pforeign.h"

static int
webp2vips(const char *name, IMAGE *out, gboolean header_only)
{
	char filename[FILENAME_MAX];
	char mode[FILENAME_MAX];

	im_filename_split(name, filename, mode);

#ifdef HAVE_LIBWEBP
	{
		VipsSource *source;
		int result;

		if (!(source = vips_source_new_from_file(filename)))
			return -1;
		if (header_only)
			result = vips__webp_read_header_source(source, out, 0, 1, 1);
		else
			result = vips__webp_read_source(source, out, 0, 1, 1);
		VIPS_UNREF(source);

		if (result)
			return result;
	}
#else
	vips_error("im_webp2vips",
		"%s", _("no webp support in your libvips"));

	return -1;
#endif /*HAVE_LIBWEBP*/

	return 0;
}

static gboolean
vips__iswebp(const char *filename)
{
	gboolean result;

#ifdef HAVE_LIBWEBP
	VipsSource *source;

	if (!(source = vips_source_new_from_file(filename)))
		return FALSE;
	result = vips__iswebp_source(source);
	VIPS_UNREF(source);
#else  /*!HAVE_LIBWEBP*/
	result = -1;
#endif /*HAVE_LIBWEBP*/

	return result;
}

int
im_webp2vips(const char *name, IMAGE *out)
{
	return webp2vips(name, out, FALSE);
}

#ifdef HAVE_LIBWEBP

static int
im_webp2vips_header(const char *name, IMAGE *out)
{
	return webp2vips(name, out, TRUE);
}

static const char *webp_suffs[] = { ".webp", NULL };

typedef VipsFormat VipsFormatWebp;
typedef VipsFormatClass VipsFormatWebpClass;

static void
vips_format_webp_class_init(VipsFormatWebpClass *class)
{
	VipsObjectClass *object_class = (VipsObjectClass *) class;
	VipsFormatClass *format_class = (VipsFormatClass *) class;

	object_class->nickname = "webp";
	object_class->description = _("webp");

	format_class->is_a = vips__iswebp;
	format_class->header = im_webp2vips_header;
	format_class->load = im_webp2vips;
	format_class->save = im_vips2webp;
	format_class->suffs = webp_suffs;
}

static void
vips_format_webp_init(VipsFormatWebp *object)
{
}

G_DEFINE_TYPE(VipsFormatWebp, vips_format_webp, VIPS_TYPE_FORMAT);

#endif /*HAVE_LIBWEBP*/
