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/*
* Copyright 2008-2013 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 CMUS_SF_H
#define CMUS_SF_H
/*
* 0 1 big_endian 0-1
* 1 1 is_signed 0-1
* 2-20 19 rate 0-524286
* 21-23 3 bits >> 3 0-7 (* 8 = 0-56)
* 24-31 8 channels 0-255
*/
typedef unsigned int sample_format_t;
#define SF_BIGENDIAN_MASK 0x00000001
#define SF_SIGNED_MASK 0x00000002
#define SF_RATE_MASK 0x001ffffc
#define SF_BITS_MASK 0x00e00000
#define SF_CHANNELS_MASK 0xff000000
#define SF_BIGENDIAN_SHIFT 0
#define SF_SIGNED_SHIFT 1
#define SF_RATE_SHIFT 2
#define SF_BITS_SHIFT (21-3)
#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_rate(sf) (((sf) & SF_RATE_MASK ) >> SF_RATE_SHIFT)
#define sf_get_bits(sf) (((sf) & SF_BITS_MASK ) >> SF_BITS_SHIFT)
#define sf_get_channels(sf) (((sf) & SF_CHANNELS_MASK ) >> SF_CHANNELS_SHIFT)
#define sf_signed(val) (((val) << SF_SIGNED_SHIFT ) & SF_SIGNED_MASK)
#define sf_rate(val) (((val) << SF_RATE_SHIFT ) & SF_RATE_MASK)
#define sf_bits(val) (((val) << SF_BITS_SHIFT ) & SF_BITS_MASK)
#define sf_channels(val) (((val) << SF_CHANNELS_SHIFT ) & SF_CHANNELS_MASK)
#define sf_bigendian(val) (((val) << SF_BIGENDIAN_SHIFT) & SF_BIGENDIAN_MASK)
#ifdef WORDS_BIGENDIAN
# define sf_host_endian() sf_bigendian(1)
#else
# define sf_host_endian() sf_bigendian(0)
#endif
#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
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