forked from len0rd/rockbox
9b7ec42403
Sync to commit bb4b6885a139644cf3ac14e7deda9f633ec2d93c
This brings in a bunch of optimizations to decode speed
and memory usage. Allocations are switched from using
the pseudostack to using the real stack. Enabled hacks
to reduce stack usage.
This should fix crashes on sansa clip, although some
files will not play due to failing allocations in the
codec buffer.
Speeds up decoding of the following test files:
H300 (cf) C200 (arm7tdmi) ipod classic (arm9e)
16 kbps (silk) 14.28 MHz 4.00 MHz 2.61 MHz
64 kbps (celt) 4.09 MHz 8.08 MHz 6.24 MHz
128 kbps (celt) 1.93 MHz 8.83 MHz 6.53 MHz
Change-Id: I851733a8a5824b61feb363a173091bc7e6629b58
183 lines
5.8 KiB
C
183 lines
5.8 KiB
C
/*Copyright (c) 2003-2004, Mark Borgerding
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.*/
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#ifndef KISS_FFT_GUTS_H
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#define KISS_FFT_GUTS_H
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#define MIN(a,b) ((a)<(b) ? (a):(b))
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#define MAX(a,b) ((a)>(b) ? (a):(b))
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/* kiss_fft.h
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defines kiss_fft_scalar as either short or a float type
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and defines
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typedef struct { kiss_fft_scalar r; kiss_fft_scalar i; }kiss_fft_cpx; */
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#include "kiss_fft.h"
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/*
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Explanation of macros dealing with complex math:
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C_MUL(m,a,b) : m = a*b
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C_FIXDIV( c , div ) : if a fixed point impl., c /= div. noop otherwise
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C_SUB( res, a,b) : res = a - b
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C_SUBFROM( res , a) : res -= a
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C_ADDTO( res , a) : res += a
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* */
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#ifdef FIXED_POINT
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#include "arch.h"
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#define SAMP_MAX 2147483647
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#define TWID_MAX 32767
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#define TRIG_UPSCALE 1
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#define SAMP_MIN -SAMP_MAX
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# define S_MUL(a,b) MULT16_32_Q15(b, a)
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# define C_MUL(m,a,b) \
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do{ (m).r = SUB32(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
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(m).i = ADD32(S_MUL((a).r,(b).i) , S_MUL((a).i,(b).r)); }while(0)
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# define C_MULC(m,a,b) \
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do{ (m).r = ADD32(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
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(m).i = SUB32(S_MUL((a).i,(b).r) , S_MUL((a).r,(b).i)); }while(0)
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# define C_MULBYSCALAR( c, s ) \
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do{ (c).r = S_MUL( (c).r , s ) ;\
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(c).i = S_MUL( (c).i , s ) ; }while(0)
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# define DIVSCALAR(x,k) \
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(x) = S_MUL( x, (TWID_MAX-((k)>>1))/(k)+1 )
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# define C_FIXDIV(c,div) \
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do { DIVSCALAR( (c).r , div); \
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DIVSCALAR( (c).i , div); }while (0)
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#define C_ADD( res, a,b)\
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do {(res).r=ADD32((a).r,(b).r); (res).i=ADD32((a).i,(b).i); \
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}while(0)
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#define C_SUB( res, a,b)\
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do {(res).r=SUB32((a).r,(b).r); (res).i=SUB32((a).i,(b).i); \
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}while(0)
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#define C_ADDTO( res , a)\
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do {(res).r = ADD32((res).r, (a).r); (res).i = ADD32((res).i,(a).i);\
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}while(0)
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#define C_SUBFROM( res , a)\
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do {(res).r = ADD32((res).r,(a).r); (res).i = SUB32((res).i,(a).i); \
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}while(0)
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#if defined(OPUS_ARM_INLINE_ASM)
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#include "arm/kiss_fft_armv4.h"
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#endif
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#if defined(OPUS_ARM_INLINE_EDSP)
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#include "arm/kiss_fft_armv5e.h"
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#endif
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#if defined(OPUS_CF_INLINE_ASM)
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#include "cf/kiss_fft_cf.h"
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#endif
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#else /* not FIXED_POINT*/
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# define S_MUL(a,b) ( (a)*(b) )
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#define C_MUL(m,a,b) \
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do{ (m).r = (a).r*(b).r - (a).i*(b).i;\
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(m).i = (a).r*(b).i + (a).i*(b).r; }while(0)
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#define C_MULC(m,a,b) \
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do{ (m).r = (a).r*(b).r + (a).i*(b).i;\
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(m).i = (a).i*(b).r - (a).r*(b).i; }while(0)
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#define C_MUL4(m,a,b) C_MUL(m,a,b)
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# define C_FIXDIV(c,div) /* NOOP */
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# define C_MULBYSCALAR( c, s ) \
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do{ (c).r *= (s);\
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(c).i *= (s); }while(0)
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#endif
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#ifndef CHECK_OVERFLOW_OP
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# define CHECK_OVERFLOW_OP(a,op,b) /* noop */
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#endif
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#ifndef C_ADD
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#define C_ADD( res, a,b)\
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do { \
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CHECK_OVERFLOW_OP((a).r,+,(b).r)\
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CHECK_OVERFLOW_OP((a).i,+,(b).i)\
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(res).r=(a).r+(b).r; (res).i=(a).i+(b).i; \
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}while(0)
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#define C_SUB( res, a,b)\
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do { \
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CHECK_OVERFLOW_OP((a).r,-,(b).r)\
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CHECK_OVERFLOW_OP((a).i,-,(b).i)\
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(res).r=(a).r-(b).r; (res).i=(a).i-(b).i; \
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}while(0)
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#define C_ADDTO( res , a)\
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do { \
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CHECK_OVERFLOW_OP((res).r,+,(a).r)\
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CHECK_OVERFLOW_OP((res).i,+,(a).i)\
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(res).r += (a).r; (res).i += (a).i;\
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}while(0)
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#define C_SUBFROM( res , a)\
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do {\
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CHECK_OVERFLOW_OP((res).r,-,(a).r)\
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CHECK_OVERFLOW_OP((res).i,-,(a).i)\
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(res).r -= (a).r; (res).i -= (a).i; \
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}while(0)
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#endif /* C_ADD defined */
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#ifdef FIXED_POINT
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/*# define KISS_FFT_COS(phase) TRIG_UPSCALE*floor(MIN(32767,MAX(-32767,.5+32768 * cos (phase))))
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# define KISS_FFT_SIN(phase) TRIG_UPSCALE*floor(MIN(32767,MAX(-32767,.5+32768 * sin (phase))))*/
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# define KISS_FFT_COS(phase) floor(.5+TWID_MAX*cos (phase))
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# define KISS_FFT_SIN(phase) floor(.5+TWID_MAX*sin (phase))
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# define HALF_OF(x) ((x)>>1)
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#elif defined(USE_SIMD)
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# define KISS_FFT_COS(phase) _mm_set1_ps( cos(phase) )
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# define KISS_FFT_SIN(phase) _mm_set1_ps( sin(phase) )
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# define HALF_OF(x) ((x)*_mm_set1_ps(.5f))
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#else
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# define KISS_FFT_COS(phase) (kiss_fft_scalar) cos(phase)
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# define KISS_FFT_SIN(phase) (kiss_fft_scalar) sin(phase)
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# define HALF_OF(x) ((x)*.5f)
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#endif
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#define kf_cexp(x,phase) \
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do{ \
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(x)->r = KISS_FFT_COS(phase);\
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(x)->i = KISS_FFT_SIN(phase);\
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}while(0)
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#define kf_cexp2(x,phase) \
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do{ \
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(x)->r = TRIG_UPSCALE*celt_cos_norm((phase));\
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(x)->i = TRIG_UPSCALE*celt_cos_norm((phase)-32768);\
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}while(0)
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#endif /* KISS_FFT_GUTS_H */
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