/*

 * Copyright 2008-2011 Various Authors

 * Copyright 2004 Timo Hirvonen

 *

 * 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, see <http://www.gnu.org/licenses/>.

 */

#ifndef _SF_H

#define	_SF_H

/*

 *  0     1 big_endian 0-1

 *  1     1 is_signed  0-1

 *  2     1 unused     0

 *  3-5   3 bits >> 3  0-7 (* 8 = 0-56)

 *  6-23 18 rate       0-262143

 * 24-31  8 channels   0-255

 */

typedef unsigned int sample_format_t;

#define SF_BIGENDIAN_MASK	0x00000001

#define SF_SIGNED_MASK		0x00000002

#define SF_BITS_MASK		0x00000038

#define SF_RATE_MASK		0x00ffffc0

#define SF_CHANNELS_MASK	0xff000000

#define SF_BIGENDIAN_SHIFT	0

#define SF_SIGNED_SHIFT		1

#define SF_BITS_SHIFT		0

#define SF_RATE_SHIFT		6

#define SF_CHANNELS_SHIFT	24

#define sf_get_bigendian(sf)	(((sf) & SF_BIGENDIAN_MASK) >> SF_BIGENDIAN_SHIFT)

#define sf_get_signed(sf)	(((sf) & SF_SIGNED_MASK   ) >> SF_SIGNED_SHIFT)

#define sf_get_bits(sf)		(((sf) & SF_BITS_MASK     ) >> SF_BITS_SHIFT)

#define sf_get_rate(sf)		(((sf) & SF_RATE_MASK     ) >> SF_RATE_SHIFT)

#define sf_get_channels(sf)	(((sf) & SF_CHANNELS_MASK ) >> SF_CHANNELS_SHIFT)

#define sf_bigendian(val)	(((val) << SF_BIGENDIAN_SHIFT) & SF_BIGENDIAN_MASK)

#define sf_signed(val)		(((val) << SF_SIGNED_SHIFT   ) & SF_SIGNED_MASK)

#define sf_bits(val)		(((val) << SF_BITS_SHIFT     ) & SF_BITS_MASK)

#define sf_rate(val)		(((val) << SF_RATE_SHIFT     ) & SF_RATE_MASK)

#define sf_channels(val)	(((val) << SF_CHANNELS_SHIFT ) & SF_CHANNELS_MASK)

#define sf_get_sample_size(sf)	(sf_get_bits((sf)) >> 3)

#define sf_get_frame_size(sf)	(sf_get_sample_size((sf)) * sf_get_channels((sf)))

#define sf_get_second_size(sf)	(sf_get_rate((sf)) * sf_get_frame_size((sf)))

#endif