849 lines
33 KiB
C
849 lines
33 KiB
C
/*
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*
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* Bluetooth low-complexity, subband codec (SBC) library
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*
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* Copyright (C) 2008-2010 Nokia Corporation
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* Copyright (C) 2012-2014 Intel Corporation
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* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
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* Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch>
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* Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.com>
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef __SBC_H
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#define __SBC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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//#include <sys/types.h>
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#include <limits.h>
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/* sampling frequency */
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#define SBC_FREQ_16000 0x00
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#define SBC_FREQ_32000 0x01
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#define SBC_FREQ_44100 0x02
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#define SBC_FREQ_48000 0x03
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/* blocks */
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#define SBC_BLK_4 0x00
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#define SBC_BLK_8 0x01
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#define SBC_BLK_12 0x02
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#define SBC_BLK_16 0x03
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/* channel mode */
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#define SBC_MODE_MONO 0x00
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#define SBC_MODE_DUAL_CHANNEL 0x01
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#define SBC_MODE_STEREO 0x02
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#define SBC_MODE_JOINT_STEREO 0x03
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/* allocation method */
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#define SBC_AM_LOUDNESS 0x00
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#define SBC_AM_SNR 0x01
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/* subbands */
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#define SBC_SB_4 0x00
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#define SBC_SB_8 0x01
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/* data endianess */
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#define SBC_LE 0x00
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#define SBC_BE 0x01
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#ifndef _SSIZE_T_DEFINED
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#ifdef _WIN64
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typedef __int64 ssize_t;
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#else
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typedef int ssize_t;
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#endif
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#define _SSIZE_T_DEFINED
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#endif
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#define SBC_EXPORT
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#define SBC_X_BUFFER_SIZE 328
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#define SCALE_OUT_BITS 15
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//#define SBC_ALIGNED
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#define SBC_ALWAYS_INLINE inline
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#define SBCDEC_FIXED_EXTRA_BITS 2
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#define SBC_ALIGN_BITS 4
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#define SBC_ALIGN_MASK ((1 << (SBC_ALIGN_BITS)) - 1)
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#define fabs(x) ((x) < 0 ? -(x) : (x))
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/* C does not provide an explicit arithmetic shift right but this will
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always be correct and every compiler *should* generate optimal code */
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#define ASR(val, bits) ((-2 >> 1 == -1) ? \
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((int32_t)(val)) >> (bits) : ((int32_t) (val)) / (1 << (bits)))
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#define SCALE_SPROTO4_TBL 12
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#define SCALE_SPROTO8_TBL 14
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#define SCALE_NPROTO4_TBL 11
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#define SCALE_NPROTO8_TBL 11
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#define SCALE4_STAGED1_BITS 15
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#define SCALE4_STAGED2_BITS 16
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#define SCALE8_STAGED1_BITS 15
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#define SCALE8_STAGED2_BITS 16
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typedef int32_t sbc_fixed_t;
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#define SCALE4_STAGED1(src) ASR(src, SCALE4_STAGED1_BITS)
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#define SCALE4_STAGED2(src) ASR(src, SCALE4_STAGED2_BITS)
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#define SCALE8_STAGED1(src) ASR(src, SCALE8_STAGED1_BITS)
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#define SCALE8_STAGED2(src) ASR(src, SCALE8_STAGED2_BITS)
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#define MULA(a, b, res) ((a) * (b) + (res))
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#define MUL(a, b) ((a) * (b))
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#define SBC_FIXED_0(val) { val = 0; }
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#define FIXED_A int32_t /* data type for fixed point accumulator */
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#define FIXED_T int16_t /* data type for fixed point constants */
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#define SBC_FIXED_EXTRA_BITS 0
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#define SS4(val) ASR(val, SCALE_SPROTO4_TBL)
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#define SS8(val) ASR(val, SCALE_SPROTO8_TBL)
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#define SN4(val) ASR(val, SCALE_NPROTO4_TBL + 1 + SBCDEC_FIXED_EXTRA_BITS)
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#define SN8(val) ASR(val, SCALE_NPROTO8_TBL + 1 + SBCDEC_FIXED_EXTRA_BITS)
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#define SBC_PROTO_FIXED4_SCALE \
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((sizeof(FIXED_T) * CHAR_BIT - 1) - SBC_FIXED_EXTRA_BITS + 1)
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#define F_PROTO4(x) (FIXED_A) ((x * 2) * \
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((FIXED_A) 1 << (sizeof(FIXED_T) * CHAR_BIT - 1)) + 0.5)
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#define F(x) F_PROTO4(x)
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static const FIXED_T _sbc_proto_fixed4[40] =
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{
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F(0.00000000E+00), F(5.36548976E-04),
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-F(1.49188357E-03), F(2.73370904E-03),
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F(3.83720193E-03), F(3.89205149E-03),
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F(1.86581691E-03), F(3.06012286E-03),
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F(1.09137620E-02), F(2.04385087E-02),
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-F(2.88757392E-02), F(3.21939290E-02),
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F(2.58767811E-02), F(6.13245186E-03),
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-F(2.88217274E-02), F(7.76463494E-02),
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F(1.35593274E-01), F(1.94987841E-01),
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-F(2.46636662E-01), F(2.81828203E-01),
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F(2.94315332E-01), F(2.81828203E-01),
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F(2.46636662E-01), -F(1.94987841E-01),
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-F(1.35593274E-01), -F(7.76463494E-02),
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F(2.88217274E-02), F(6.13245186E-03),
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F(2.58767811E-02), F(3.21939290E-02),
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F(2.88757392E-02), -F(2.04385087E-02),
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-F(1.09137620E-02), -F(3.06012286E-03),
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-F(1.86581691E-03), F(3.89205149E-03),
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F(3.83720193E-03), F(2.73370904E-03),
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F(1.49188357E-03), -F(5.36548976E-04),
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};
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#undef F
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/*
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* To produce this cosine matrix in Octave:
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*
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* b = zeros(4, 8);
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* for i = 0:3
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* for j = 0:7 b(i+1, j+1) = cos((i + 0.5) * (j - 2) * (pi/4))
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* endfor
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* endfor;
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* printf("%.10f, ", b');
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*
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* Note: in each block of 8 numbers sign was changed for elements 2 and 7
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*
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* Change of sign for element 2 allows to replace constant 1.0 (not
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* representable in Q15 format) with -1.0 (fine with Q15).
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* Changed sign for element 7 allows to have more similar constants
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* and simplify subband filter function code.
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*/
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#define SBC_COS_TABLE_FIXED4_SCALE \
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((sizeof(FIXED_T) * CHAR_BIT - 1) + SBC_FIXED_EXTRA_BITS)
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#define F_COS4(x) (FIXED_A) ((x) * \
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((FIXED_A) 1 << (sizeof(FIXED_T) * CHAR_BIT - 1)) + 0.5)
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#define F(x) F_COS4(x)
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static const FIXED_T cos_table_fixed_4[32] =
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{
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F(0.7071067812), F(0.9238795325), -F(1.0000000000), F(0.9238795325),
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F(0.7071067812), F(0.3826834324), F(0.0000000000), F(0.3826834324),
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-F(0.7071067812), F(0.3826834324), -F(1.0000000000), F(0.3826834324),
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-F(0.7071067812), -F(0.9238795325), -F(0.0000000000), -F(0.9238795325),
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-F(0.7071067812), -F(0.3826834324), -F(1.0000000000), -F(0.3826834324),
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-F(0.7071067812), F(0.9238795325), F(0.0000000000), F(0.9238795325),
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F(0.7071067812), -F(0.9238795325), -F(1.0000000000), -F(0.9238795325),
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F(0.7071067812), -F(0.3826834324), -F(0.0000000000), -F(0.3826834324),
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};
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#undef F
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/* A2DP specification: Section 12.8 Tables
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*
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* Original values are premultiplied by 4 for better precision (that is the
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* maximum which is possible without overflows)
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*
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* Note: in each block of 16 numbers sign was changed for elements 4, 13, 14, 15
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* in order to compensate the same change applied to cos_table_fixed_8
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*/
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#define SBC_PROTO_FIXED8_SCALE \
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((sizeof(FIXED_T) * CHAR_BIT - 1) - SBC_FIXED_EXTRA_BITS + 1)
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#define F_PROTO8(x) (FIXED_A) ((x * 2) * \
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((FIXED_A) 1 << (sizeof(FIXED_T) * CHAR_BIT - 1)) + 0.5)
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#define F(x) F_PROTO8(x)
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static const FIXED_T _sbc_proto_fixed8[80] =
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{
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F(0.00000000E+00), F(1.56575398E-04),
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F(3.43256425E-04), F(5.54620202E-04),
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-F(8.23919506E-04), F(1.13992507E-03),
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F(1.47640169E-03), F(1.78371725E-03),
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F(2.01182542E-03), F(2.10371989E-03),
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F(1.99454554E-03), F(1.61656283E-03),
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F(9.02154502E-04), F(1.78805361E-04),
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F(1.64973098E-03), F(3.49717454E-03),
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F(5.65949473E-03), F(8.02941163E-03),
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F(1.04584443E-02), F(1.27472335E-02),
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-F(1.46525263E-02), F(1.59045603E-02),
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F(1.62208471E-02), F(1.53184106E-02),
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F(1.29371806E-02), F(8.85757540E-03),
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F(2.92408442E-03), -F(4.91578024E-03),
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-F(1.46404076E-02), F(2.61098752E-02),
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F(3.90751381E-02), F(5.31873032E-02),
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F(6.79989431E-02), F(8.29847578E-02),
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F(9.75753918E-02), F(1.11196689E-01),
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-F(1.23264548E-01), F(1.33264415E-01),
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F(1.40753505E-01), F(1.45389847E-01),
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F(1.46955068E-01), F(1.45389847E-01),
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F(1.40753505E-01), F(1.33264415E-01),
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F(1.23264548E-01), -F(1.11196689E-01),
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-F(9.75753918E-02), -F(8.29847578E-02),
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-F(6.79989431E-02), -F(5.31873032E-02),
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-F(3.90751381E-02), -F(2.61098752E-02),
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F(1.46404076E-02), -F(4.91578024E-03),
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F(2.92408442E-03), F(8.85757540E-03),
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F(1.29371806E-02), F(1.53184106E-02),
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F(1.62208471E-02), F(1.59045603E-02),
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F(1.46525263E-02), -F(1.27472335E-02),
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-F(1.04584443E-02), -F(8.02941163E-03),
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-F(5.65949473E-03), -F(3.49717454E-03),
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-F(1.64973098E-03), -F(1.78805361E-04),
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-F(9.02154502E-04), F(1.61656283E-03),
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F(1.99454554E-03), F(2.10371989E-03),
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F(2.01182542E-03), F(1.78371725E-03),
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F(1.47640169E-03), F(1.13992507E-03),
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F(8.23919506E-04), -F(5.54620202E-04),
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-F(3.43256425E-04), -F(1.56575398E-04),
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};
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#undef F
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/*
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* To produce this cosine matrix in Octave:
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*
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* b = zeros(8, 16);
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* for i = 0:7
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* for j = 0:15 b(i+1, j+1) = cos((i + 0.5) * (j - 4) * (pi/8))
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* endfor endfor;
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* printf("%.10f, ", b');
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*
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* Note: in each block of 16 numbers sign was changed for elements 4, 13, 14, 15
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*
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* Change of sign for element 4 allows to replace constant 1.0 (not
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* representable in Q15 format) with -1.0 (fine with Q15).
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* Changed signs for elements 13, 14, 15 allow to have more similar constants
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* and simplify subband filter function code.
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*/
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#define SBC_COS_TABLE_FIXED8_SCALE \
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((sizeof(FIXED_T) * CHAR_BIT - 1) + SBC_FIXED_EXTRA_BITS)
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#define F_COS8(x) (FIXED_A) ((x) * \
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((FIXED_A) 1 << (sizeof(FIXED_T) * CHAR_BIT - 1)) + 0.5)
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#define F(x) F_COS8(x)
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static const FIXED_T cos_table_fixed_8[128] =
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{
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F(0.7071067812), F(0.8314696123), F(0.9238795325), F(0.9807852804),
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-F(1.0000000000), F(0.9807852804), F(0.9238795325), F(0.8314696123),
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F(0.7071067812), F(0.5555702330), F(0.3826834324), F(0.1950903220),
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F(0.0000000000), F(0.1950903220), F(0.3826834324), F(0.5555702330),
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-F(0.7071067812), -F(0.1950903220), F(0.3826834324), F(0.8314696123),
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-F(1.0000000000), F(0.8314696123), F(0.3826834324), -F(0.1950903220),
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-F(0.7071067812), -F(0.9807852804), -F(0.9238795325), -F(0.5555702330),
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-F(0.0000000000), -F(0.5555702330), -F(0.9238795325), -F(0.9807852804),
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-F(0.7071067812), -F(0.9807852804), -F(0.3826834324), F(0.5555702330),
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-F(1.0000000000), F(0.5555702330), -F(0.3826834324), -F(0.9807852804),
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-F(0.7071067812), F(0.1950903220), F(0.9238795325), F(0.8314696123),
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F(0.0000000000), F(0.8314696123), F(0.9238795325), F(0.1950903220),
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F(0.7071067812), -F(0.5555702330), -F(0.9238795325), F(0.1950903220),
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-F(1.0000000000), F(0.1950903220), -F(0.9238795325), -F(0.5555702330),
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F(0.7071067812), F(0.8314696123), -F(0.3826834324), -F(0.9807852804),
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-F(0.0000000000), -F(0.9807852804), -F(0.3826834324), F(0.8314696123),
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F(0.7071067812), F(0.5555702330), -F(0.9238795325), -F(0.1950903220),
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-F(1.0000000000), -F(0.1950903220), -F(0.9238795325), F(0.5555702330),
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F(0.7071067812), -F(0.8314696123), -F(0.3826834324), F(0.9807852804),
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F(0.0000000000), F(0.9807852804), -F(0.3826834324), -F(0.8314696123),
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-F(0.7071067812), F(0.9807852804), -F(0.3826834324), -F(0.5555702330),
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-F(1.0000000000), -F(0.5555702330), -F(0.3826834324), F(0.9807852804),
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-F(0.7071067812), -F(0.1950903220), F(0.9238795325), -F(0.8314696123),
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-F(0.0000000000), -F(0.8314696123), F(0.9238795325), -F(0.1950903220),
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-F(0.7071067812), F(0.1950903220), F(0.3826834324), -F(0.8314696123),
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-F(1.0000000000), -F(0.8314696123), F(0.3826834324), F(0.1950903220),
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-F(0.7071067812), F(0.9807852804), -F(0.9238795325), F(0.5555702330),
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-F(0.0000000000), F(0.5555702330), -F(0.9238795325), F(0.9807852804),
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F(0.7071067812), -F(0.8314696123), F(0.9238795325), -F(0.9807852804),
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-F(1.0000000000), -F(0.9807852804), F(0.9238795325), -F(0.8314696123),
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F(0.7071067812), -F(0.5555702330), F(0.3826834324), -F(0.1950903220),
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-F(0.0000000000), -F(0.1950903220), F(0.3826834324), -F(0.5555702330),
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};
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#undef F
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/*
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* Enforce 16 byte alignment for the data, which is supposed to be used
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* with SIMD optimized code.
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*/
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#define SBC_ALIGN_BITS 4
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#define SBC_ALIGN_MASK ((1 << (SBC_ALIGN_BITS)) - 1)
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#ifdef __GNUC__
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#define SBC_ALIGNED __attribute__((aligned(1 << (SBC_ALIGN_BITS))))
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#else
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#define SBC_ALIGNED
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#endif
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/*
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* Constant tables for the use in SIMD optimized analysis filters
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* Each table consists of two parts:
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* 1. reordered "proto" table
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* 2. reordered "cos" table
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*
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* Due to non-symmetrical reordering, separate tables for "even"
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* and "odd" cases are needed
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*/
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static const FIXED_T SBC_ALIGNED analysis_consts_fixed4_simd_even[40 + 16] =
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{
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#define C0 1.0932568993
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#define C1 1.3056875580
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#define C2 1.3056875580
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#define C3 1.6772280856
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#define F(x) F_PROTO4(x)
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F(0.00000000E+00 * C0), F(3.83720193E-03 * C0),
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F(5.36548976E-04 * C1), F(2.73370904E-03 * C1),
|
|
F(3.06012286E-03 * C2), F(3.89205149E-03 * C2),
|
|
F(0.00000000E+00 * C3), -F(1.49188357E-03 * C3),
|
|
F(1.09137620E-02 * C0), F(2.58767811E-02 * C0),
|
|
F(2.04385087E-02 * C1), F(3.21939290E-02 * C1),
|
|
F(7.76463494E-02 * C2), F(6.13245186E-03 * C2),
|
|
F(0.00000000E+00 * C3), -F(2.88757392E-02 * C3),
|
|
F(1.35593274E-01 * C0), F(2.94315332E-01 * C0),
|
|
F(1.94987841E-01 * C1), F(2.81828203E-01 * C1),
|
|
-F(1.94987841E-01 * C2), F(2.81828203E-01 * C2),
|
|
F(0.00000000E+00 * C3), -F(2.46636662E-01 * C3),
|
|
-F(1.35593274E-01 * C0), F(2.58767811E-02 * C0),
|
|
-F(7.76463494E-02 * C1), F(6.13245186E-03 * C1),
|
|
-F(2.04385087E-02 * C2), F(3.21939290E-02 * C2),
|
|
F(0.00000000E+00 * C3), F(2.88217274E-02 * C3),
|
|
-F(1.09137620E-02 * C0), F(3.83720193E-03 * C0),
|
|
-F(3.06012286E-03 * C1), F(3.89205149E-03 * C1),
|
|
-F(5.36548976E-04 * C2), F(2.73370904E-03 * C2),
|
|
F(0.00000000E+00 * C3), -F(1.86581691E-03 * C3),
|
|
#undef F
|
|
#define F(x) F_COS4(x)
|
|
F(0.7071067812 / C0), F(0.9238795325 / C1),
|
|
-F(0.7071067812 / C0), F(0.3826834324 / C1),
|
|
-F(0.7071067812 / C0), -F(0.3826834324 / C1),
|
|
F(0.7071067812 / C0), -F(0.9238795325 / C1),
|
|
F(0.3826834324 / C2), -F(1.0000000000 / C3),
|
|
-F(0.9238795325 / C2), -F(1.0000000000 / C3),
|
|
F(0.9238795325 / C2), -F(1.0000000000 / C3),
|
|
-F(0.3826834324 / C2), -F(1.0000000000 / C3),
|
|
#undef F
|
|
|
|
#undef C0
|
|
#undef C1
|
|
#undef C2
|
|
#undef C3
|
|
};
|
|
|
|
static const FIXED_T SBC_ALIGNED analysis_consts_fixed4_simd_odd[40 + 16] =
|
|
{
|
|
#define C0 1.3056875580
|
|
#define C1 1.6772280856
|
|
#define C2 1.0932568993
|
|
#define C3 1.3056875580
|
|
|
|
#define F(x) F_PROTO4(x)
|
|
F(2.73370904E-03 * C0), F(5.36548976E-04 * C0),
|
|
-F(1.49188357E-03 * C1), F(0.00000000E+00 * C1),
|
|
F(3.83720193E-03 * C2), F(1.09137620E-02 * C2),
|
|
F(3.89205149E-03 * C3), F(3.06012286E-03 * C3),
|
|
F(3.21939290E-02 * C0), F(2.04385087E-02 * C0),
|
|
-F(2.88757392E-02 * C1), F(0.00000000E+00 * C1),
|
|
F(2.58767811E-02 * C2), F(1.35593274E-01 * C2),
|
|
F(6.13245186E-03 * C3), F(7.76463494E-02 * C3),
|
|
F(2.81828203E-01 * C0), F(1.94987841E-01 * C0),
|
|
-F(2.46636662E-01 * C1), F(0.00000000E+00 * C1),
|
|
F(2.94315332E-01 * C2), -F(1.35593274E-01 * C2),
|
|
F(2.81828203E-01 * C3), -F(1.94987841E-01 * C3),
|
|
F(6.13245186E-03 * C0), -F(7.76463494E-02 * C0),
|
|
F(2.88217274E-02 * C1), F(0.00000000E+00 * C1),
|
|
F(2.58767811E-02 * C2), -F(1.09137620E-02 * C2),
|
|
F(3.21939290E-02 * C3), -F(2.04385087E-02 * C3),
|
|
F(3.89205149E-03 * C0), -F(3.06012286E-03 * C0),
|
|
-F(1.86581691E-03 * C1), F(0.00000000E+00 * C1),
|
|
F(3.83720193E-03 * C2), F(0.00000000E+00 * C2),
|
|
F(2.73370904E-03 * C3), -F(5.36548976E-04 * C3),
|
|
#undef F
|
|
#define F(x) F_COS4(x)
|
|
F(0.9238795325 / C0), -F(1.0000000000 / C1),
|
|
F(0.3826834324 / C0), -F(1.0000000000 / C1),
|
|
-F(0.3826834324 / C0), -F(1.0000000000 / C1),
|
|
-F(0.9238795325 / C0), -F(1.0000000000 / C1),
|
|
F(0.7071067812 / C2), F(0.3826834324 / C3),
|
|
-F(0.7071067812 / C2), -F(0.9238795325 / C3),
|
|
-F(0.7071067812 / C2), F(0.9238795325 / C3),
|
|
F(0.7071067812 / C2), -F(0.3826834324 / C3),
|
|
#undef F
|
|
|
|
#undef C0
|
|
#undef C1
|
|
#undef C2
|
|
#undef C3
|
|
};
|
|
|
|
static const FIXED_T SBC_ALIGNED analysis_consts_fixed8_simd_even[80 + 64] =
|
|
{
|
|
#define C0 2.7906148894
|
|
#define C1 2.4270044280
|
|
#define C2 2.8015616024
|
|
#define C3 3.1710363741
|
|
#define C4 2.5377944043
|
|
#define C5 2.4270044280
|
|
#define C6 2.8015616024
|
|
#define C7 3.1710363741
|
|
|
|
#define F(x) F_PROTO8(x)
|
|
F(0.00000000E+00 * C0), F(2.01182542E-03 * C0),
|
|
F(1.56575398E-04 * C1), F(1.78371725E-03 * C1),
|
|
F(3.43256425E-04 * C2), F(1.47640169E-03 * C2),
|
|
F(5.54620202E-04 * C3), F(1.13992507E-03 * C3),
|
|
-F(8.23919506E-04 * C4), F(0.00000000E+00 * C4),
|
|
F(2.10371989E-03 * C5), F(3.49717454E-03 * C5),
|
|
F(1.99454554E-03 * C6), F(1.64973098E-03 * C6),
|
|
F(1.61656283E-03 * C7), F(1.78805361E-04 * C7),
|
|
F(5.65949473E-03 * C0), F(1.29371806E-02 * C0),
|
|
F(8.02941163E-03 * C1), F(1.53184106E-02 * C1),
|
|
F(1.04584443E-02 * C2), F(1.62208471E-02 * C2),
|
|
F(1.27472335E-02 * C3), F(1.59045603E-02 * C3),
|
|
-F(1.46525263E-02 * C4), F(0.00000000E+00 * C4),
|
|
F(8.85757540E-03 * C5), F(5.31873032E-02 * C5),
|
|
F(2.92408442E-03 * C6), F(3.90751381E-02 * C6),
|
|
-F(4.91578024E-03 * C7), F(2.61098752E-02 * C7),
|
|
F(6.79989431E-02 * C0), F(1.46955068E-01 * C0),
|
|
F(8.29847578E-02 * C1), F(1.45389847E-01 * C1),
|
|
F(9.75753918E-02 * C2), F(1.40753505E-01 * C2),
|
|
F(1.11196689E-01 * C3), F(1.33264415E-01 * C3),
|
|
-F(1.23264548E-01 * C4), F(0.00000000E+00 * C4),
|
|
F(1.45389847E-01 * C5), -F(8.29847578E-02 * C5),
|
|
F(1.40753505E-01 * C6), -F(9.75753918E-02 * C6),
|
|
F(1.33264415E-01 * C7), -F(1.11196689E-01 * C7),
|
|
-F(6.79989431E-02 * C0), F(1.29371806E-02 * C0),
|
|
-F(5.31873032E-02 * C1), F(8.85757540E-03 * C1),
|
|
-F(3.90751381E-02 * C2), F(2.92408442E-03 * C2),
|
|
-F(2.61098752E-02 * C3), -F(4.91578024E-03 * C3),
|
|
F(1.46404076E-02 * C4), F(0.00000000E+00 * C4),
|
|
F(1.53184106E-02 * C5), -F(8.02941163E-03 * C5),
|
|
F(1.62208471E-02 * C6), -F(1.04584443E-02 * C6),
|
|
F(1.59045603E-02 * C7), -F(1.27472335E-02 * C7),
|
|
-F(5.65949473E-03 * C0), F(2.01182542E-03 * C0),
|
|
-F(3.49717454E-03 * C1), F(2.10371989E-03 * C1),
|
|
-F(1.64973098E-03 * C2), F(1.99454554E-03 * C2),
|
|
-F(1.78805361E-04 * C3), F(1.61656283E-03 * C3),
|
|
-F(9.02154502E-04 * C4), F(0.00000000E+00 * C4),
|
|
F(1.78371725E-03 * C5), -F(1.56575398E-04 * C5),
|
|
F(1.47640169E-03 * C6), -F(3.43256425E-04 * C6),
|
|
F(1.13992507E-03 * C7), -F(5.54620202E-04 * C7),
|
|
#undef F
|
|
#define F(x) F_COS8(x)
|
|
F(0.7071067812 / C0), F(0.8314696123 / C1),
|
|
-F(0.7071067812 / C0), -F(0.1950903220 / C1),
|
|
-F(0.7071067812 / C0), -F(0.9807852804 / C1),
|
|
F(0.7071067812 / C0), -F(0.5555702330 / C1),
|
|
F(0.7071067812 / C0), F(0.5555702330 / C1),
|
|
-F(0.7071067812 / C0), F(0.9807852804 / C1),
|
|
-F(0.7071067812 / C0), F(0.1950903220 / C1),
|
|
F(0.7071067812 / C0), -F(0.8314696123 / C1),
|
|
F(0.9238795325 / C2), F(0.9807852804 / C3),
|
|
F(0.3826834324 / C2), F(0.8314696123 / C3),
|
|
-F(0.3826834324 / C2), F(0.5555702330 / C3),
|
|
-F(0.9238795325 / C2), F(0.1950903220 / C3),
|
|
-F(0.9238795325 / C2), -F(0.1950903220 / C3),
|
|
-F(0.3826834324 / C2), -F(0.5555702330 / C3),
|
|
F(0.3826834324 / C2), -F(0.8314696123 / C3),
|
|
F(0.9238795325 / C2), -F(0.9807852804 / C3),
|
|
-F(1.0000000000 / C4), F(0.5555702330 / C5),
|
|
-F(1.0000000000 / C4), -F(0.9807852804 / C5),
|
|
-F(1.0000000000 / C4), F(0.1950903220 / C5),
|
|
-F(1.0000000000 / C4), F(0.8314696123 / C5),
|
|
-F(1.0000000000 / C4), -F(0.8314696123 / C5),
|
|
-F(1.0000000000 / C4), -F(0.1950903220 / C5),
|
|
-F(1.0000000000 / C4), F(0.9807852804 / C5),
|
|
-F(1.0000000000 / C4), -F(0.5555702330 / C5),
|
|
F(0.3826834324 / C6), F(0.1950903220 / C7),
|
|
-F(0.9238795325 / C6), -F(0.5555702330 / C7),
|
|
F(0.9238795325 / C6), F(0.8314696123 / C7),
|
|
-F(0.3826834324 / C6), -F(0.9807852804 / C7),
|
|
-F(0.3826834324 / C6), F(0.9807852804 / C7),
|
|
F(0.9238795325 / C6), -F(0.8314696123 / C7),
|
|
-F(0.9238795325 / C6), F(0.5555702330 / C7),
|
|
F(0.3826834324 / C6), -F(0.1950903220 / C7),
|
|
#undef F
|
|
|
|
#undef C0
|
|
#undef C1
|
|
#undef C2
|
|
#undef C3
|
|
#undef C4
|
|
#undef C5
|
|
#undef C6
|
|
#undef C7
|
|
};
|
|
|
|
static const FIXED_T SBC_ALIGNED analysis_consts_fixed8_simd_odd[80 + 64] =
|
|
{
|
|
#define C0 2.5377944043
|
|
#define C1 2.4270044280
|
|
#define C2 2.8015616024
|
|
#define C3 3.1710363741
|
|
#define C4 2.7906148894
|
|
#define C5 2.4270044280
|
|
#define C6 2.8015616024
|
|
#define C7 3.1710363741
|
|
|
|
#define F(x) F_PROTO8(x)
|
|
F(0.00000000E+00 * C0), -F(8.23919506E-04 * C0),
|
|
F(1.56575398E-04 * C1), F(1.78371725E-03 * C1),
|
|
F(3.43256425E-04 * C2), F(1.47640169E-03 * C2),
|
|
F(5.54620202E-04 * C3), F(1.13992507E-03 * C3),
|
|
F(2.01182542E-03 * C4), F(5.65949473E-03 * C4),
|
|
F(2.10371989E-03 * C5), F(3.49717454E-03 * C5),
|
|
F(1.99454554E-03 * C6), F(1.64973098E-03 * C6),
|
|
F(1.61656283E-03 * C7), F(1.78805361E-04 * C7),
|
|
F(0.00000000E+00 * C0), -F(1.46525263E-02 * C0),
|
|
F(8.02941163E-03 * C1), F(1.53184106E-02 * C1),
|
|
F(1.04584443E-02 * C2), F(1.62208471E-02 * C2),
|
|
F(1.27472335E-02 * C3), F(1.59045603E-02 * C3),
|
|
F(1.29371806E-02 * C4), F(6.79989431E-02 * C4),
|
|
F(8.85757540E-03 * C5), F(5.31873032E-02 * C5),
|
|
F(2.92408442E-03 * C6), F(3.90751381E-02 * C6),
|
|
-F(4.91578024E-03 * C7), F(2.61098752E-02 * C7),
|
|
F(0.00000000E+00 * C0), -F(1.23264548E-01 * C0),
|
|
F(8.29847578E-02 * C1), F(1.45389847E-01 * C1),
|
|
F(9.75753918E-02 * C2), F(1.40753505E-01 * C2),
|
|
F(1.11196689E-01 * C3), F(1.33264415E-01 * C3),
|
|
F(1.46955068E-01 * C4), -F(6.79989431E-02 * C4),
|
|
F(1.45389847E-01 * C5), -F(8.29847578E-02 * C5),
|
|
F(1.40753505E-01 * C6), -F(9.75753918E-02 * C6),
|
|
F(1.33264415E-01 * C7), -F(1.11196689E-01 * C7),
|
|
F(0.00000000E+00 * C0), F(1.46404076E-02 * C0),
|
|
-F(5.31873032E-02 * C1), F(8.85757540E-03 * C1),
|
|
-F(3.90751381E-02 * C2), F(2.92408442E-03 * C2),
|
|
-F(2.61098752E-02 * C3), -F(4.91578024E-03 * C3),
|
|
F(1.29371806E-02 * C4), -F(5.65949473E-03 * C4),
|
|
F(1.53184106E-02 * C5), -F(8.02941163E-03 * C5),
|
|
F(1.62208471E-02 * C6), -F(1.04584443E-02 * C6),
|
|
F(1.59045603E-02 * C7), -F(1.27472335E-02 * C7),
|
|
F(0.00000000E+00 * C0), -F(9.02154502E-04 * C0),
|
|
-F(3.49717454E-03 * C1), F(2.10371989E-03 * C1),
|
|
-F(1.64973098E-03 * C2), F(1.99454554E-03 * C2),
|
|
-F(1.78805361E-04 * C3), F(1.61656283E-03 * C3),
|
|
F(2.01182542E-03 * C4), F(0.00000000E+00 * C4),
|
|
F(1.78371725E-03 * C5), -F(1.56575398E-04 * C5),
|
|
F(1.47640169E-03 * C6), -F(3.43256425E-04 * C6),
|
|
F(1.13992507E-03 * C7), -F(5.54620202E-04 * C7),
|
|
#undef F
|
|
#define F(x) F_COS8(x)
|
|
-F(1.0000000000 / C0), F(0.8314696123 / C1),
|
|
-F(1.0000000000 / C0), -F(0.1950903220 / C1),
|
|
-F(1.0000000000 / C0), -F(0.9807852804 / C1),
|
|
-F(1.0000000000 / C0), -F(0.5555702330 / C1),
|
|
-F(1.0000000000 / C0), F(0.5555702330 / C1),
|
|
-F(1.0000000000 / C0), F(0.9807852804 / C1),
|
|
-F(1.0000000000 / C0), F(0.1950903220 / C1),
|
|
-F(1.0000000000 / C0), -F(0.8314696123 / C1),
|
|
F(0.9238795325 / C2), F(0.9807852804 / C3),
|
|
F(0.3826834324 / C2), F(0.8314696123 / C3),
|
|
-F(0.3826834324 / C2), F(0.5555702330 / C3),
|
|
-F(0.9238795325 / C2), F(0.1950903220 / C3),
|
|
-F(0.9238795325 / C2), -F(0.1950903220 / C3),
|
|
-F(0.3826834324 / C2), -F(0.5555702330 / C3),
|
|
F(0.3826834324 / C2), -F(0.8314696123 / C3),
|
|
F(0.9238795325 / C2), -F(0.9807852804 / C3),
|
|
F(0.7071067812 / C4), F(0.5555702330 / C5),
|
|
-F(0.7071067812 / C4), -F(0.9807852804 / C5),
|
|
-F(0.7071067812 / C4), F(0.1950903220 / C5),
|
|
F(0.7071067812 / C4), F(0.8314696123 / C5),
|
|
F(0.7071067812 / C4), -F(0.8314696123 / C5),
|
|
-F(0.7071067812 / C4), -F(0.1950903220 / C5),
|
|
-F(0.7071067812 / C4), F(0.9807852804 / C5),
|
|
F(0.7071067812 / C4), -F(0.5555702330 / C5),
|
|
F(0.3826834324 / C6), F(0.1950903220 / C7),
|
|
-F(0.9238795325 / C6), -F(0.5555702330 / C7),
|
|
F(0.9238795325 / C6), F(0.8314696123 / C7),
|
|
-F(0.3826834324 / C6), -F(0.9807852804 / C7),
|
|
-F(0.3826834324 / C6), F(0.9807852804 / C7),
|
|
F(0.9238795325 / C6), -F(0.8314696123 / C7),
|
|
-F(0.9238795325 / C6), F(0.5555702330 / C7),
|
|
F(0.3826834324 / C6), -F(0.1950903220 / C7),
|
|
#undef F
|
|
|
|
#undef C0
|
|
#undef C1
|
|
#undef C2
|
|
#undef C3
|
|
#undef C4
|
|
#undef C5
|
|
#undef C6
|
|
#undef C7
|
|
};
|
|
|
|
static const int32_t sbc_proto_4_40m0[] =
|
|
{
|
|
SS4(0x00000000), SS4(0xffa6982f), SS4(0xfba93848), SS4(0x0456c7b8),
|
|
SS4(0x005967d1), SS4(0xfffb9ac7), SS4(0xff589157), SS4(0xf9c2a8d8),
|
|
SS4(0x027c1434), SS4(0x0019118b), SS4(0xfff3c74c), SS4(0xff137330),
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|
SS4(0xf81b8d70), SS4(0x00ec1b8b), SS4(0xfff0b71a), SS4(0xffe99b00),
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|
SS4(0xfef84470), SS4(0xf6fb4370), SS4(0xffcdc351), SS4(0xffe01dc7)
|
|
};
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|
|
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static const int32_t sbc_proto_4_40m1[] =
|
|
{
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SS4(0xffe090ce), SS4(0xff2c0475), SS4(0xf694f800), SS4(0xff2c0475),
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|
SS4(0xffe090ce), SS4(0xffe01dc7), SS4(0xffcdc351), SS4(0xf6fb4370),
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|
SS4(0xfef84470), SS4(0xffe99b00), SS4(0xfff0b71a), SS4(0x00ec1b8b),
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|
SS4(0xf81b8d70), SS4(0xff137330), SS4(0xfff3c74c), SS4(0x0019118b),
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|
SS4(0x027c1434), SS4(0xf9c2a8d8), SS4(0xff589157), SS4(0xfffb9ac7)
|
|
};
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|
|
|
static const int32_t sbc_proto_8_80m0[] =
|
|
{
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SS8(0x00000000), SS8(0xfe8d1970), SS8(0xee979f00), SS8(0x11686100),
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|
SS8(0x0172e690), SS8(0xfff5bd1a), SS8(0xfdf1c8d4), SS8(0xeac182c0),
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|
SS8(0x0d9daee0), SS8(0x00e530da), SS8(0xffe9811d), SS8(0xfd52986c),
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|
SS8(0xe7054ca0), SS8(0x0a00d410), SS8(0x006c1de4), SS8(0xffdba705),
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|
SS8(0xfcbc98e8), SS8(0xe3889d20), SS8(0x06af2308), SS8(0x000bb7db),
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|
SS8(0xffca00ed), SS8(0xfc3fbb68), SS8(0xe071bc00), SS8(0x03bf7948),
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|
SS8(0xffc4e05c), SS8(0xffb54b3b), SS8(0xfbedadc0), SS8(0xdde26200),
|
|
SS8(0x0142291c), SS8(0xff960e94), SS8(0xff9f3e17), SS8(0xfbd8f358),
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|
SS8(0xdbf79400), SS8(0xff405e01), SS8(0xff7d4914), SS8(0xff8b1a31),
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|
SS8(0xfc1417b8), SS8(0xdac7bb40), SS8(0xfdbb828c), SS8(0xff762170)
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|
};
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|
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static const int32_t sbc_proto_8_80m1[] =
|
|
{
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SS8(0xff7c272c), SS8(0xfcb02620), SS8(0xda612700), SS8(0xfcb02620),
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SS8(0xff7c272c), SS8(0xff762170), SS8(0xfdbb828c), SS8(0xdac7bb40),
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|
SS8(0xfc1417b8), SS8(0xff8b1a31), SS8(0xff7d4914), SS8(0xff405e01),
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|
SS8(0xdbf79400), SS8(0xfbd8f358), SS8(0xff9f3e17), SS8(0xff960e94),
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|
SS8(0x0142291c), SS8(0xdde26200), SS8(0xfbedadc0), SS8(0xffb54b3b),
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|
SS8(0xffc4e05c), SS8(0x03bf7948), SS8(0xe071bc00), SS8(0xfc3fbb68),
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|
SS8(0xffca00ed), SS8(0x000bb7db), SS8(0x06af2308), SS8(0xe3889d20),
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|
SS8(0xfcbc98e8), SS8(0xffdba705), SS8(0x006c1de4), SS8(0x0a00d410),
|
|
SS8(0xe7054ca0), SS8(0xfd52986c), SS8(0xffe9811d), SS8(0x00e530da),
|
|
SS8(0x0d9daee0), SS8(0xeac182c0), SS8(0xfdf1c8d4), SS8(0xfff5bd1a)
|
|
};
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|
|
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static const int32_t synmatrix4[8][4] =
|
|
{
|
|
{ SN4(0x05a82798), SN4(0xfa57d868), SN4(0xfa57d868), SN4(0x05a82798) },
|
|
{ SN4(0x030fbc54), SN4(0xf89be510), SN4(0x07641af0), SN4(0xfcf043ac) },
|
|
{ SN4(0x00000000), SN4(0x00000000), SN4(0x00000000), SN4(0x00000000) },
|
|
{ SN4(0xfcf043ac), SN4(0x07641af0), SN4(0xf89be510), SN4(0x030fbc54) },
|
|
{ SN4(0xfa57d868), SN4(0x05a82798), SN4(0x05a82798), SN4(0xfa57d868) },
|
|
{ SN4(0xf89be510), SN4(0xfcf043ac), SN4(0x030fbc54), SN4(0x07641af0) },
|
|
{ SN4(0xf8000000), SN4(0xf8000000), SN4(0xf8000000), SN4(0xf8000000) },
|
|
{ SN4(0xf89be510), SN4(0xfcf043ac), SN4(0x030fbc54), SN4(0x07641af0) }
|
|
};
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|
|
|
static const int32_t synmatrix8[16][8] =
|
|
{
|
|
{ SN8(0x05a82798), SN8(0xfa57d868), SN8(0xfa57d868), SN8(0x05a82798),
|
|
SN8(0x05a82798), SN8(0xfa57d868), SN8(0xfa57d868), SN8(0x05a82798) },
|
|
{ SN8(0x0471ced0), SN8(0xf8275a10), SN8(0x018f8b84), SN8(0x06a6d988),
|
|
SN8(0xf9592678), SN8(0xfe70747c), SN8(0x07d8a5f0), SN8(0xfb8e3130) },
|
|
{ SN8(0x030fbc54), SN8(0xf89be510), SN8(0x07641af0), SN8(0xfcf043ac),
|
|
SN8(0xfcf043ac), SN8(0x07641af0), SN8(0xf89be510), SN8(0x030fbc54) },
|
|
{ SN8(0x018f8b84), SN8(0xfb8e3130), SN8(0x06a6d988), SN8(0xf8275a10),
|
|
SN8(0x07d8a5f0), SN8(0xf9592678), SN8(0x0471ced0), SN8(0xfe70747c) },
|
|
{ SN8(0x00000000), SN8(0x00000000), SN8(0x00000000), SN8(0x00000000),
|
|
SN8(0x00000000), SN8(0x00000000), SN8(0x00000000), SN8(0x00000000) },
|
|
{ SN8(0xfe70747c), SN8(0x0471ced0), SN8(0xf9592678), SN8(0x07d8a5f0),
|
|
SN8(0xf8275a10), SN8(0x06a6d988), SN8(0xfb8e3130), SN8(0x018f8b84) },
|
|
{ SN8(0xfcf043ac), SN8(0x07641af0), SN8(0xf89be510), SN8(0x030fbc54),
|
|
SN8(0x030fbc54), SN8(0xf89be510), SN8(0x07641af0), SN8(0xfcf043ac) },
|
|
{ SN8(0xfb8e3130), SN8(0x07d8a5f0), SN8(0xfe70747c), SN8(0xf9592678),
|
|
SN8(0x06a6d988), SN8(0x018f8b84), SN8(0xf8275a10), SN8(0x0471ced0) },
|
|
{ SN8(0xfa57d868), SN8(0x05a82798), SN8(0x05a82798), SN8(0xfa57d868),
|
|
SN8(0xfa57d868), SN8(0x05a82798), SN8(0x05a82798), SN8(0xfa57d868) },
|
|
{ SN8(0xf9592678), SN8(0x018f8b84), SN8(0x07d8a5f0), SN8(0x0471ced0),
|
|
SN8(0xfb8e3130), SN8(0xf8275a10), SN8(0xfe70747c), SN8(0x06a6d988) },
|
|
{ SN8(0xf89be510), SN8(0xfcf043ac), SN8(0x030fbc54), SN8(0x07641af0),
|
|
SN8(0x07641af0), SN8(0x030fbc54), SN8(0xfcf043ac), SN8(0xf89be510) },
|
|
{ SN8(0xf8275a10), SN8(0xf9592678), SN8(0xfb8e3130), SN8(0xfe70747c),
|
|
SN8(0x018f8b84), SN8(0x0471ced0), SN8(0x06a6d988), SN8(0x07d8a5f0) },
|
|
{ SN8(0xf8000000), SN8(0xf8000000), SN8(0xf8000000), SN8(0xf8000000),
|
|
SN8(0xf8000000), SN8(0xf8000000), SN8(0xf8000000), SN8(0xf8000000) },
|
|
{ SN8(0xf8275a10), SN8(0xf9592678), SN8(0xfb8e3130), SN8(0xfe70747c),
|
|
SN8(0x018f8b84), SN8(0x0471ced0), SN8(0x06a6d988), SN8(0x07d8a5f0) },
|
|
{ SN8(0xf89be510), SN8(0xfcf043ac), SN8(0x030fbc54), SN8(0x07641af0),
|
|
SN8(0x07641af0), SN8(0x030fbc54), SN8(0xfcf043ac), SN8(0xf89be510) },
|
|
{ SN8(0xf9592678), SN8(0x018f8b84), SN8(0x07d8a5f0), SN8(0x0471ced0),
|
|
SN8(0xfb8e3130), SN8(0xf8275a10), SN8(0xfe70747c), SN8(0x06a6d988) }
|
|
};
|
|
|
|
struct sbc_encoder_state
|
|
{
|
|
int position;
|
|
/* Number of consecutive blocks handled by the encoder */
|
|
uint8_t increment;
|
|
int16_t SBC_ALIGNED X[2][SBC_X_BUFFER_SIZE];
|
|
/* Polyphase analysis filter for 4 subbands configuration,
|
|
* it handles "increment" blocks at once */
|
|
void (*sbc_analyze_4s)(struct sbc_encoder_state *state,
|
|
int16_t *x, int32_t *out, int out_stride);
|
|
/* Polyphase analysis filter for 8 subbands configuration,
|
|
* it handles "increment" blocks at once */
|
|
void (*sbc_analyze_8s)(struct sbc_encoder_state *state,
|
|
int16_t *x, int32_t *out, int out_stride);
|
|
/* Process input data (deinterleave, endian conversion, reordering),
|
|
* depending on the number of subbands and input data byte order */
|
|
int (*sbc_enc_process_input_4s_le)(int position,
|
|
const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE],
|
|
int nsamples, int nchannels);
|
|
int (*sbc_enc_process_input_4s_be)(int position,
|
|
const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE],
|
|
int nsamples, int nchannels);
|
|
int (*sbc_enc_process_input_8s_le)(int position,
|
|
const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE],
|
|
int nsamples, int nchannels);
|
|
int (*sbc_enc_process_input_8s_be)(int position,
|
|
const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE],
|
|
int nsamples, int nchannels);
|
|
/* Scale factors calculation */
|
|
void (*sbc_calc_scalefactors)(int32_t sb_sample_f[16][2][8],
|
|
uint32_t scale_factor[2][8],
|
|
int blocks, int channels, int subbands);
|
|
/* Scale factors calculation with joint stereo support */
|
|
int (*sbc_calc_scalefactors_j)(int32_t sb_sample_f[16][2][8],
|
|
uint32_t scale_factor[2][8],
|
|
int blocks, int subbands);
|
|
const char *implementation_info;
|
|
};
|
|
|
|
/* A2DP specification: Appendix B, page 69 */
|
|
static const int sbc_offset4[4][4] =
|
|
{
|
|
{ -1, 0, 0, 0 },
|
|
{ -2, 0, 0, 1 },
|
|
{ -2, 0, 0, 1 },
|
|
{ -2, 0, 0, 1 }
|
|
};
|
|
|
|
/* A2DP specification: Appendix B, page 69 */
|
|
static const int sbc_offset8[4][8] =
|
|
{
|
|
{ -2, 0, 0, 0, 0, 0, 0, 1 },
|
|
{ -3, 0, 0, 0, 0, 0, 1, 2 },
|
|
{ -4, 0, 0, 0, 0, 0, 1, 2 },
|
|
{ -4, 0, 0, 0, 0, 0, 1, 2 }
|
|
};
|
|
|
|
struct sbc_struct
|
|
{
|
|
unsigned long flags;
|
|
|
|
uint8_t frequency;
|
|
uint8_t blocks;
|
|
uint8_t subbands;
|
|
uint8_t mode;
|
|
uint8_t allocation;
|
|
uint8_t bitpool;
|
|
uint8_t endian;
|
|
|
|
void *priv;
|
|
void *priv_alloc_base;
|
|
};
|
|
|
|
typedef struct sbc_struct sbc_t;
|
|
|
|
int sbc_init(sbc_t *sbc, unsigned long flags);
|
|
int sbc_reinit(sbc_t *sbc, unsigned long flags);
|
|
int sbc_init_msbc(sbc_t *sbc, unsigned long flags);
|
|
int sbc_init_a2dp(sbc_t *sbc, unsigned long flags,
|
|
const void *conf, size_t conf_len);
|
|
int sbc_reinit_a2dp(sbc_t *sbc, unsigned long flags,
|
|
const void *conf, size_t conf_len);
|
|
|
|
ssize_t sbc_parse(sbc_t *sbc, const void *input, size_t input_len);
|
|
|
|
/* Decodes ONE input block into ONE output block */
|
|
ssize_t sbc_decode(sbc_t *sbc, const void *input, size_t input_len,
|
|
void *output, size_t output_len, size_t *written);
|
|
|
|
/* Encodes ONE input block into ONE output block */
|
|
ssize_t sbc_encode(sbc_t *sbc, const void *input, size_t input_len,
|
|
void *output, size_t output_len, ssize_t *written);
|
|
|
|
/* Returns the output block size in bytes */
|
|
size_t sbc_get_frame_length(sbc_t *sbc);
|
|
|
|
/* Returns the time one input/output block takes to play in msec*/
|
|
unsigned sbc_get_frame_duration(sbc_t *sbc);
|
|
|
|
/* Returns the input block size in bytes */
|
|
size_t sbc_get_codesize(sbc_t *sbc);
|
|
|
|
const char *sbc_get_implementation_info(sbc_t *sbc);
|
|
void sbc_finish(sbc_t *sbc);
|
|
void pcm_to_sbc(char *filename, char *output, int msbc);
|
|
void sbc_to_pcm(char *filename, char *output, int msbc);
|
|
void sbc_init_primitives(struct sbc_encoder_state *state);
|
|
void sbc_decode_init(sbc_t *sbc, int msbc);
|
|
ssize_t sbc_decoder_decode(sbc_t *sbc, const void *input, size_t input_len,
|
|
void *output, size_t output_len, size_t *written);
|
|
void sbc_decoder_uninit(sbc_t *sbc);
|
|
void sbc_encode_init(sbc_t *sbc, int msbc);
|
|
ssize_t sbc_encoder_encode(sbc_t *sbc, const void *input, size_t input_len,
|
|
void *output, size_t output_len, ssize_t *written);
|
|
void sbc_encoder_uninit(sbc_t *sbc);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __SBC_H */
|