/* *****************************************************************************
 * decode/cas/screenshot.c -- decode a CAS screenshot.
 * Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
 *
 * This file is part of libg1m.
 * libg1m 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 3.0 of the License,
 * or (at your option) any later version.
 *
 * libg1m 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 libg1m; if not, see <http://www.gnu.org/licenses/>.
 * ************************************************************************** */
#include <libg1m/internals.h>

/**
 *	g1m_decode_caspart_capture:
 *	Decode a CAS picture.
 *
 *	@arg	handle		the handle to contribute to.
 *	@arg	buffer		the buffer to read from.
 *	@return				the error code (0 if ok).
 */

int g1m_decode_caspart_capture(g1m_mcsfile_t *handle, g1m_buffer_t *buffer)
{
	/* read the picture data */
	unsigned int width = handle->head.width, height = handle->head.height;
	size_t pic_size = g1m_picturesize_4bit_color(width, height);
	uint8_t pic_data[pic_size]; READ(pic_data, pic_size)

	/* decode the picture data */
	int err = g1m_decode_picture(handle->pics[0], handle->head._picformat,
		pic_data, width, height);
	if (err) { g1m_free_mcsfile(handle); return (err); }

	/* no error */
	handle->head.flags &= ~g1m_mcsflag_unfinished;
	return (0);
}