diff --git a/bit.c b/bit.c index c2bfb24..262ce3a 100644 --- a/bit.c +++ b/bit.c @@ -25,12 +25,6 @@ # include "global.h" -# ifdef HAVE_LIMITS_H -# include -# else -# define CHAR_BIT 8 -# endif - # include "bit.h" /* @@ -81,6 +75,8 @@ unsigned short const crc_table[256] = { # define CRC_POLY 0x8005 +#ifndef FPM_AVR32 + /* * NAME: bit->init() * DESCRIPTION: initialize bit pointer struct @@ -190,6 +186,8 @@ void mad_bit_write(struct mad_bitptr *bitptr, unsigned int len, } # endif +#endif + /* * NAME: bit->crc() * DESCRIPTION: compute CRC-check word diff --git a/bit.h b/bit.h index 5a51570..70f550a 100644 --- a/bit.h +++ b/bit.h @@ -22,6 +22,92 @@ # ifndef LIBMAD_BIT_H # define LIBMAD_BIT_H +# ifdef HAVE_LIMITS_H +# include +# else +# define CHAR_BIT 8 +# endif + +#ifdef FPM_AVR32 + +struct mad_bitptr { + unsigned char const *byte; + unsigned int read_bytes; +}; + +/* + * NAME: bit->init() + * DESCRIPTION: initialize bit pointer struct + */ +static void mad_bit_init(struct mad_bitptr *bitptr, unsigned char const *byte) +{ + bitptr->byte = byte; + bitptr->read_bytes = 0; +} + +/* + * NAME: bit->length() + * DESCRIPTION: return number of bits between start and end points + */ +static unsigned int mad_bit_length(struct mad_bitptr const *begin, + struct mad_bitptr const *end) +{ + return (end->read_bytes - begin->read_bytes) + + 8 * (end->byte - begin->byte); +} + +/* + * NAME: bit->nextbyte() + * DESCRIPTION: return pointer to next unprocessed byte + */ +static unsigned char const *mad_bit_nextbyte(struct mad_bitptr const *bitptr) +{ + return bitptr->byte + ((bitptr->read_bytes + 0x7) >> 3); +} + +/* + * NAME: bit->skip() + * DESCRIPTION: advance bit pointer + */ +static void mad_bit_skip(struct mad_bitptr *bitptr, unsigned int len) +{ + bitptr->read_bytes += len; + bitptr->byte += (bitptr->read_bytes >> 3); + bitptr->read_bytes &= 0x7; +} + +/* + * NAME: bit->read() + * DESCRIPTION: read an arbitrary number of bits and return their UIMSBF value + */ +static unsigned long mad_bit_read(struct mad_bitptr *bitptr, unsigned int len) +{ + register unsigned long value; + + if (!len) + return 0; + + value = *(unsigned int *)bitptr->byte; + + value <<= bitptr->read_bytes; + value >>= (32 - len); + + bitptr->read_bytes += len; + bitptr->byte += (bitptr->read_bytes >> 3); + bitptr->read_bytes &= 0x7; + + return value; +} + +# define mad_bit_finish(bitptr) /* nothing */ + +static unsigned long mad_bit_bitsleft(struct mad_bitptr *bitptr) +{ + return (8 - (bitptr)->read_bytes); +} + +#else /* #ifdef FPM_AVR32 */ + struct mad_bitptr { unsigned char const *byte; unsigned short cache; @@ -42,6 +128,8 @@ void mad_bit_skip(struct mad_bitptr *, unsigned int); unsigned long mad_bit_read(struct mad_bitptr *, unsigned int); void mad_bit_write(struct mad_bitptr *, unsigned int, unsigned long); +#endif + unsigned short mad_bit_crc(struct mad_bitptr, unsigned int, unsigned short); # endif diff --git a/configure.ac b/configure.ac index 9b79399..063cb9b 100644 --- a/configure.ac +++ b/configure.ac @@ -274,13 +274,14 @@ fi AC_MSG_CHECKING(for architecture-specific fixed-point math routines) AC_ARG_ENABLE(fpm, AC_HELP_STRING([--enable-fpm=ARCH], [use ARCH-specific fixed-point math routines - (one of: intel, arm, mips, sparc, ppc, 64bit, default)]), + (one of: intel, arm, avr32, mips, sparc, ppc, 64bit, default)]), [ case "$enableval" in yes) ;; no|default|approx) FPM="DEFAULT" ;; intel|i?86) FPM="INTEL" ;; arm) FPM="ARM" ;; + avr32) FPM="AVR32" ;; mips) FPM="MIPS" ;; sparc) FPM="SPARC" ;; ppc|powerpc) FPM="PPC" ;; @@ -298,6 +299,7 @@ then case "$host" in i?86-*) FPM="INTEL" ;; arm*-*) FPM="ARM" ;; + avr32*-*) FPM="AVR32" ;; mips*-*) FPM="MIPS" ;; sparc*-*) FPM="SPARC" ;; powerpc*-*) FPM="PPC" ;; @@ -343,6 +345,11 @@ then ASO="$ASO -DASO_IMDCT" ASO_OBJS="imdct_l_arm.lo" ;; + avr32*-*) + ASO="$ASO -DASO_INTERLEAVE2" + ASO="$ASO -DASO_ZEROCHECK" + ASO_OBJS="dct32_avr32.lo synth_avr32.lo imdct_avr32.lo" + ;; mips*-*) ASO="$ASO -DASO_INTERLEAVE2" ASO="$ASO -DASO_ZEROCHECK" diff --git a/configure b/configure index ee421cc..7a9f0c8 100755 --- a/configure +++ b/configure @@ -1048,7 +1048,7 @@ Optional Features: --enable-speed optimize for speed over accuracy --enable-accuracy optimize for accuracy over speed --enable-fpm=ARCH use ARCH-specific fixed-point math routines (one of: - intel, arm, mips, sparc, ppc, 64bit, default) + intel, arm, avr32, mips, sparc, ppc, 64bit, default) --enable-sso use subband synthesis optimization --disable-aso disable architecture-specific optimizations --enable-strict-iso use strict ISO/IEC interpretations @@ -21477,6 +21477,7 @@ if test "${enable_fpm+set}" = set; then no|default|approx) FPM="DEFAULT" ;; intel|i?86) FPM="INTEL" ;; arm) FPM="ARM" ;; + avr32) FPM="AVR32" ;; mips) FPM="MIPS" ;; sparc) FPM="SPARC" ;; ppc|powerpc) FPM="PPC" ;; @@ -21498,6 +21499,7 @@ then case "$host" in i?86-*) FPM="INTEL" ;; arm*-*) FPM="ARM" ;; + avr32*-*) FPM="AVR32" ;; mips*-*) FPM="MIPS" ;; sparc*-*) FPM="SPARC" ;; powerpc*-*) FPM="PPC" ;; @@ -21554,6 +21556,11 @@ then ASO="$ASO -DASO_IMDCT" ASO_OBJS="imdct_l_arm.lo" ;; + avr32*-*) + ASO="$ASO -DASO_INTERLEAVE2" + ASO="$ASO -DASO_ZEROCHECK" + ASO_OBJS="dct32_avr32.lo synth_avr32.lo imdct_avr32.lo" + ;; mips*-*) ASO="$ASO -DASO_INTERLEAVE2" ASO="$ASO -DASO_ZEROCHECK" diff --git a/dct32_avr32.S b/dct32_avr32.S new file mode 100644 index 0000000..7513340 --- /dev/null +++ b/dct32_avr32.S @@ -0,0 +1,780 @@ +/* + Optimized 32-point Discrete Cosine Transform (DCT) + Copyright 2003-2006 Atmel Corporation. + + Written by Ronny Pedersen, Atmel Norway + + 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, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#define SHIFT 12 +#define MAD_F_SCALEBITS 28 +#define SLOTS 8 + +#define MAD_F(x) ((x + (1 << 15)) >> 16) + +# define costab1 MAD_F(0x7fd8878e) +# define costab2 MAD_F(0x7f62368f) +# define costab3 MAD_F(0x7e9d55fc) +# define costab4 MAD_F(0x7d8a5f40) +# define costab5 MAD_F(0x7c29fbee) +# define costab6 MAD_F(0x7a7d055b) +# define costab7 MAD_F(0x78848414) +# define costab8 MAD_F(0x7641af3d) +# define costab9 MAD_F(0x73b5ebd1) +# define costab10 MAD_F(0x70e2cbc6) +# define costab11 MAD_F(0x6dca0d14) +# define costab12 MAD_F(0x6a6d98a4) +# define costab13 MAD_F(0x66cf8120) +# define costab14 MAD_F(0x62f201ac) +# define costab15 MAD_F(0x5ed77c8a) +# define costab16 MAD_F(0x5a82799a) +# define costab17 MAD_F(0x55f5a4d2) +# define costab18 MAD_F(0x5133cc94) +# define costab19 MAD_F(0x4c3fdff4) +# define costab20 MAD_F(0x471cece7) +# define costab21 MAD_F(0x41ce1e65) +# define costab22 MAD_F(0x3c56ba70) +# define costab23 MAD_F(0x36ba2014) +# define costab24 MAD_F(0x30fbc54d) +# define costab25 MAD_F(0x2b1f34eb) +# define costab26 MAD_F(0x25280c5e) +# define costab27 MAD_F(0x1f19f97b) +# define costab28 MAD_F(0x18f8b83c) +# define costab29 MAD_F(0x12c8106f) +# define costab30 MAD_F(0x0c8bd35e) +# define costab31 MAD_F(0x0647d97c) + + + .macro butterfly2_in out1, out2, out3, out4, in, idx_in1, idx_in2, idx_in3, idx_in4, coeff1, coeff2, tmplo, tmphi + mov \tmplo, \coeff1 + ld.w \out1, \in[\idx_in1 * 4] + ld.w \out2, \in[\idx_in2 * 4] + ld.w \out3, \in[\idx_in3 * 4] + ld.w \out4, \in[\idx_in4 * 4] + sub \tmphi, \out1, \out2 + add \out1, \out2 + mulsatrndwh.w \out2, \tmphi, \tmplo:b + + sub \tmphi, \out3, \out4 + mov \tmplo, \coeff2 + add \out3, \out4 + mulsatrndwh.w \out4, \tmphi, \tmplo:b + .endm + + .macro butterfly2 in1, in2, in3, in4, coeff1, tmplo, tmphi, tmp + mov \tmp, \coeff1 + sub \tmphi, \in1, \in2 + add \in1, \in2 + mulsatrndwh.w \in2, \tmphi, \tmp:b + + sub \tmphi, \in3, \in4 + add \in3, \in4 + mulsatrndwh.w \in4, \tmphi, \tmp:b + .endm + + .macro butterfly4 in1, in2, in3, in4, in5, in6, in7, in8, coeff1, tmplo, tmphi, tmp + mov \tmp, \coeff1 + sub \tmphi, \in1, \in2 + add \in1, \in2 + mulsatrndwh.w \in2, \tmphi, \tmp:b + + sub \tmphi, \in3, \in4 + add \in3, \in4 + mulsatrndwh.w \in4, \tmphi, \tmp:b + + sub \tmphi, \in5, \in6 + add \in5, \in6 + mulsatrndwh.w \in6, \tmphi, \tmp:b + + sub \tmphi, \in7, \in8 + add \in7, \in8 + mulsatrndwh.w \in8, \tmphi, \tmp:b + .endm + + .macro scale reg + .endm + +/*void dct32( mad_fixed_t const in[32], unsigned int slot, + mad_fixed_t lo[16][8], mad_fixed_t hi[16][8]) */ + + .global dct32_avr32 +dct32_avr32: + stm --sp, r0-r7, r9-r11, lr + + sub sp, 32*4 + +/* t0 = in[0] + in[31]; t16 = MUL(in[0] - in[31], costab1); + t1 = in[15] + in[16]; t17 = MUL(in[15] - in[16], costab31); */ + butterfly2_in r4/*t0*/, r5/*t16*/, r6/*t1*/, r7/*t17*/, r12, 0, 31, 15, 16, costab1, costab31, r10, r11 + +/* t41 = t16 + t17; + t59 = MUL(t16 - t17, costab2); + t33 = t0 + t1; + t50 = MUL(t0 - t1, costab2);*/ + butterfly2 r5/*t41*/, r7/*t59*/, r4/*t33*/, r6/*t50*/, costab2, r10, r11, lr + +/* t2 = in[7] + in[24]; t18 = MUL(in[7] - in[24], costab15); + t3 = in[8] + in[23]; t19 = MUL(in[8] - in[23], costab17); */ + butterfly2_in r0/*t2*/, r1/*t18*/, r2/*t3*/, r3/*t19*/, r12, 7, 24, 8, 23, costab15, costab17, r10, r11 + +/* t42 = t18 + t19; + t60 = MUL(t18 - t19, costab30); + t34 = t2 + t3; + t51 = MUL(t2 - t3, costab30); */ + butterfly2 r1/*t42*/, r3/*t60*/, r0/*t34*/, r2/*t51*/, costab30, r10, r11, lr + +/* t73 = t41 + t42; t94 = MUL(t41 - t42, costab4); + t83 = t59 + t60; t106 = MUL(t59 - t60, costab4); */ + + +/* t69 = t33 + t34; t89 = MUL(t33 - t34, costab4); + t78 = t50 + t51; t100 = MUL(t50 - t51, costab4); */ + butterfly4 r5/*t73*/, r1/*t94*/, r7/*t83*/, r3/*t106*/,r4/*t69*/, r0/*t89*/, r6/*t78*/, r2/*t100*/, costab4, r10, r11, lr + +/* Store away the computed butterflies: + sp[0-7] = t83, t78, t73, t69, t106, t100, t94, t89 */ + stm sp, r0-r7 + + +/* t4 = in[3] + in[28]; t20 = MUL(in[3] - in[28], costab7); + t5 = in[12] + in[19]; t21 = MUL(in[12] - in[19], costab25); */ + butterfly2_in r4/*t4*/, r5/*t20*/, r6/*t5*/, r7/*t21*/, r12, 3, 28, 12, 19, costab7, costab25, r10, r11 + +/* t43 = t20 + t21; + t61 = MUL(t20 - t21, costab14); + t35 = t4 + t5; + t52 = MUL(t4 - t5, costab14); */ + butterfly2 r5/*t43*/, r7/*t61*/, r4/*t35*/, r6/*t52*/, costab14, r10, r11, lr + +/* t6 = in[4] + in[27]; t22 = MUL(in[4] - in[27], costab9); + t7 = in[11] + in[20]; t23 = MUL(in[11] - in[20], costab23); */ + butterfly2_in r0/*t6*/, r1/*t22*/, r2/*t7*/, r3/*t23*/, r12, 4, 27, 11, 20, costab9, costab23, r10, r11 + +/* t44 = t22 + t23; + t62 = MUL(t22 - t23, costab18); + t36 = t6 + t7; + t53 = MUL(t6 - t7, costab18); */ + butterfly2 r1/*t44*/, r3/*t62*/, r0/*t36*/, r2/*t53*/, costab18, r10, r11, lr + +/* t74 = t43 + t44; t95 = MUL(t43 - t44, costab28); + t84 = t61 + t62; t107 = MUL(t61 - t62, costab28); */ + +/* t70 = t35 + t36; t90 = MUL(t35 - t36, costab28); + t79 = t52 + t53; t101 = MUL(t52 - t53, costab28); */ + butterfly4 r5/*t74*/, r1/*t95*/, r7/*t84*/, r3/*t107*/, r4/*t70*/, r0/*t90*/, r6/*t79*/, r2/*t101*/, costab28, r10, r11, lr + +/* Store away the computed butterflies: + sp[8-15] = t84, t79, t74, t70, t107, t101, t95, t90 */ + sub r10, sp, -8*4 + stm r10, r0-r7 + + +/* t8 = in[1] + in[30]; t24 = MUL(in[1] - in[30], costab3); + t9 = in[14] + in[17]; t25 = MUL(in[14] - in[17], costab29); */ + butterfly2_in r4/*t8*/, r5/*t24*/, r6/*t9*/, r7/*t25*/, r12, 1, 30, 14, 17, costab3, costab29, r10, r11 + + +/* t45 = t24 + t25; + t63 = MUL(t24 - t25, costab6); + t37 = t8 + t9; + t54 = MUL(t8 - t9, costab6); */ + butterfly2 r5/*t45*/, r7/*t63*/, r4/*t37*/, r6/*t54*/, costab6, r10, r11, lr + +/* t10 = in[6] + in[25]; t26 = MUL(in[6] - in[25], costab13); + t11 = in[9] + in[22]; t27 = MUL(in[9] - in[22], costab19); */ + butterfly2_in r0/*t10*/, r1/*t26*/, r2/*t11*/, r3/*t27*/, r12, 6, 25, 9, 22, costab13, costab19, r10, r11 + +/* t46 = t26 + t27; + t64 = MUL(t26 - t27, costab26); + t38 = t10 + t11; + t55 = MUL(t10 - t11, costab26); */ + butterfly2 r1/*t46*/, r3/*t64*/, r0/*t38*/, r2/*t55*/, costab26, r10, r11, lr + +/* t75 = t45 + t46; t96 = MUL(t45 - t46, costab12); + t85 = t63 + t64; t108 = MUL(t63 - t64, costab12); */ + +/* t71 = t37 + t38; t91 = MUL(t37 - t38, costab12); + t80 = t54 + t55; t102 = MUL(t54 - t55, costab12); */ + butterfly4 r5/*t75*/, r1/*t96*/, r7/*t85*/, r3/*t108*/, r4/*t71*/, r0/*t91*/, r6/*t80*/, r2/*t102*/, costab12, r10, r11, lr + +/* Store away the computed butterflies: + sp[16-23] = t85, t80, t75, t71, t108, t102, t96, t91 */ + sub r10, sp, -16*4 + stm r10, r0-r7 + +/* t12 = in[2] + in[29]; t28 = MUL(in[2] - in[29], costab5); + t13 = in[13] + in[18]; t29 = MUL(in[13] - in[18], costab27); */ + butterfly2_in r4/*t12*/, r5/*t28*/, r6/*t13*/, r7/*t29*/, r12, 2, 29, 13, 18, costab5, costab27, r10, r11 + +/* t47 = t28 + t29; + t65 = MUL(t28 - t29, costab10); + t39 = t12 + t13; + t56 = MUL(t12 - t13, costab10); */ + butterfly2 r5/*t47*/, r7/*t65*/, r4/*t39*/, r6/*t56*/, costab10, r10, r11, lr + +/* t14 = in[5] + in[26]; t30 = MUL(in[5] - in[26], costab11); + t15 = in[10] + in[21]; t31 = MUL(in[10] - in[21], costab21);*/ + butterfly2_in r0/*t14*/, r1/*t30*/, r2/*t15*/, r3/*t31*/, r12, 5, 26, 10, 21, costab11, costab21, r10, r11 + +/* t48 = t30 + t31; + t66 = MUL(t30 - t31, costab22); + t40 = t14 + t15; + t57 = MUL(t14 - t15, costab22);*/ + butterfly2 r1/*t48*/, r3/*t66*/, r0/*t40*/, r2/*t57*/, costab22, r10, r11, lr + +/* t76 = t47 + t48; t97 = MUL(t47 - t48, costab20); + t86 = t65 + t66; t109 = MUL(t65 - t66, costab20);*/ + +/* t72 = t39 + t40; t92 = MUL(t39 - t40, costab20); + t81 = t56 + t57; t103 = MUL(t56 - t57, costab20);*/ + butterfly4 r5/*t76*/, r1/*t97*/, r7/*t86*/, r3/*t109*/,r4/*t72*/, r0/*t92*/, r6/*t81*/, r2/*t103*/, costab20, r10, r11, lr + +/* Store away the computed butterflies: + sp[24-31] = t86, t81, t76, t72, t109, t103, t97, t92 */ + sub r10, sp, -24*4 + stm r10, r0-r7 + +/* We now have the following on the stack: + + sp[0-7] = t83, t78, t73, t69, t106, t100, t94, t89 + sp[8-15] = t84, t79, t74, t70, t107, t101, t95, t90 + sp[16-23] = t85, t80, t75, t71, t108, t102, t96, t91 + sp[24-31] = t86, t81, t76, t72, t109, t103, t97, t92 */ + +/* Load {r0...r7} = { t72, t76, t71, t75, t70, t74, t69, t73 } */ + ld.d r6, sp[2*4] + ld.d r4, sp[10*4] + ld.d r2, sp[18*4] + ld.d r0, sp[26*4] + + +/* t113 = t69 + t70; + t141 = MUL(t69 - t70, costab8); + + t115 = t73 + t74; + t144 = MUL(t73 - t74, costab8); */ + butterfly2 r6/*t113*/, r4/*t141*/, r7/*t115*/, r5/*t144*/, costab8, r10, r11, lr + +/* t114 = t71 + t72; + t142 = MUL(t71 - t72, costab24); + + t116 = t75 + t76; + t145 = MUL(t75 - t76, costab24); */ + butterfly2 r2/*t114*/, r0/*t142*/, r3/*t116*/, r1/*t145*/, costab24, r10, r11, lr + + +/* + t191 = t113 + t114; + t192 = MUL(t113 - t114, costab16) + + t32 = t115 + t116; + t177 = MUL(t115 - t116, costab16) ; + + t143 = t141 + t142; + t190 = MUL(t141 - t142, costab16) ; + + t146 = t144 + t145; + t184 = MUL(t144 - t145, costab16) ; */ + butterfly4 r6/*t191*/, r2/*t192*/, r7/*t32*/, r3/*t177*/, r4/*t143*/, r0/*190*/, r5/*t146*/, r1/*t184*/, costab16, r10, r11, lr + +/* Store away the computed butterflies: + sp[2-3] = t32, t191 + sp[10-11] = t146, t143 + sp[18-19] = t177, t192 + sp[26-27] = t184, t190 */ + st.d sp[2*4] , r6 + st.d sp[10*4], r4 + st.d sp[18*4], r2 + st.d sp[26*4], r0 + +/* Load {r0...r7} = { t81, t86, t80, t85, t79, t84, t78, t83 } */ + ld.d r6, sp[0*4] + ld.d r4, sp[8*4] + ld.d r2, sp[16*4] + ld.d r0, sp[24*4] + + +/* t118 = t78 + t79; + t148 = MUL(t78 - t79, costab8); + + t121 = t83 + t84; + t152 = MUL(t83 - t84, costab8); */ + butterfly2 r6/*t118*/, r4/*t148*/, r7/*t121*/, r5/*t152*/, costab8, r10, r11, lr + +/* t119 = t80 + t81; + t149 = MUL(t80 - t81, costab24); + + t122 = t85 + t86; + t153 = MUL(t85 - t86, costab24); */ + butterfly2 r2/*t119*/, r0/*t149*/, r3/*t122*/, r1/*t153*/, costab24, r10, r11, lr + + + +/* t58 = t118 + t119; + t178 = MUL(t118 - t119, costab16) ; + + t67 = t121 + t122; + t179 = MUL(t121 - t122, costab16) ; + + t150 = t148 + t149; + t185 = MUL(t148 - t149, costab16) ; + + t154 = t152 + t153; + t186 = MUL(t152 - t153, costab16) ; */ + butterfly4 r6/*t58*/, r2/*t178*/, r7/*t67*/, r3/*t179*/, r4/*t150*/, r0/*185*/, r5/*t154*/, r1/*t186*/, costab16, r10, r11, lr + +/* Store away the computed butterflies: + sp[0-1] = t67, t58 + sp[8-9] = t154, t150 + sp[16-17] = t179, t178 + sp[24-25] = t186, t185 */ + st.d sp[0*4] , r6 + st.d sp[8*4], r4 + st.d sp[16*4], r2 + st.d sp[24*4], r0 + +/* Load {r0...r7} = { t92, t97, t91, t96, t90, t95, t89, t94 } */ + ld.d r6, sp[6*4] + ld.d r4, sp[14*4] + ld.d r2, sp[22*4] + ld.d r0, sp[30*4] + + +/* t125 = t89 + t90; + t157 = MUL(t89 - t90, costab8); + + t128 = t94 + t95; + t161 = MUL(t94 - t95, costab8); */ + butterfly2 r6/*t125*/, r4/*t157*/, r7/*t128*/, r5/*t161*/, costab8, r10, r11, lr + +/* t126 = t91 + t92; + t158 = MUL(t91 - t92, costab24); + + t129 = t96 + t97; + t162 = MUL(t96 - t97, costab24); */ + butterfly2 r2/*t126*/, r0/*t158*/, r3/*t129*/, r1/*t162*/, costab24, r10, r11, lr + + +/* + t93 = t125 + t126; + t180 = MUL(t125 - t126, costab16) ; + + t98 = t128 + t129; + t181 = MUL(t128 - t129, costab16) ; + + t159 = t157 + t158; + t187 = MUL(t157 - t158, costab16) ; + + t163 = t161 + t162; + t188 = MUL(t161 - t162, costab16) ; */ + butterfly4 r6/*t93*/, r2/*t180*/, r7/*t98*/, r3/*t181*/, r4/*t159*/, r0/*187*/, r5/*t163*/, r1/*t188*/, costab16, r10, r11, lr + + +/* Store away the computed butterflies: + sp[6-7] = t98, t93 + sp[14-15] = t163, t159 + sp[22-23] = t181, t180 + sp[30-31] = t188, t187 */ + st.d sp[6*4] , r6 + st.d sp[14*4], r4 + st.d sp[22*4], r2 + st.d sp[30*4], r0 + +/* Load {r0...r7} = { t103, t109, t102, t108, t101, t107, t100, t106 } */ + ld.d r6, sp[4*4] + ld.d r4, sp[12*4] + ld.d r2, sp[20*4] + ld.d r0, sp[28*4] + + + +/* t132 = t100 + t101; + t166 = MUL(t100 - t101, costab8); + + t136 = t106 + t107; + t171 = MUL(t106 - t107, costab8); */ + butterfly2 r6/*t132*/, r4/*t166*/, r7/*t136*/, r5/*t171*/, costab8, r10, r11, lr + +/* t133 = t102 + t103; + t167 = MUL(t102 - t103, costab24); + + t137 = t108 + t109; + t172 = MUL(t108 - t109, costab24);*/ + butterfly2 r2/*t133*/, r0/*t167*/, r3/*t137*/, r1/*t172*/, costab24, r10, r11, lr + + +/* t104 = t132 + t133; + t182 = MUL(t132 - t133, costab16) ; + + t110 = t136 + t137; + t183 = MUL(t136 - t137, costab16) ; + + t168 = t166 + t167; + t189 = MUL(t166 - t167, costab16) ; + + t173 = t171 + t172; + t208 = MUL(t171 - t172, costab16) ; */ + butterfly4 r6/*t104*/, r2/*t182*/, r7/*t110*/, r3/*t183*/, r4/*t168*/, r0/*189*/, r5/*t173*/, r1/*t208*/, costab16, r10, r11, lr + +/* Store away the computed butterflies: + sp[4-5] = t110, t104 + sp[12-13] = t173, t168 + sp[20-21] = t183, t182 + sp[28-29] = t208, t189 */ + st.d sp[4*4] , r6 + st.d sp[12*4], r4 + st.d sp[20*4], r2 + st.d sp[28*4], r0 + +/* Now we have the following stack + + sp[0-7] = t67, t58 , t32, t191, t110, t104, t98, t93 + sp[8-15] = t154, t150, t146, t143, t173, t168, t163, t159 + sp[16-23] = t179, t178, t177, t192, t183, t182, t181, t180 + sp[24-31] = t186, t185, t184, t190, t208, t189, t188, t187 +*/ + + /* Get slot, lo and hi from stack */ + lddsp lr, sp[32*4 + 4] /*slot*/ + lddsp r12, sp[32*4 + 8] /*lo*/ + lddsp r11, sp[32*4 + 12] /*hi*/ + + add r12, r12, lr << 2 + add r11, r11, lr << 2 + + +/* t49 = -(t67 * 2) + t32; + hi[14][slot] = SHIFT(t32); + t87 = -(t110 * 2) + t67; + t138 = -(t173 * 2) + t110; + t203 = -(t208 * 2) + t173; */ + + lddsp r0/*t67*/, sp[0] + lddsp r1/*t32*/, sp[2*4] + lddsp r2/*t110*/, sp[4*4] + lddsp r3/*t173*/, sp[12*4] + lddsp r5/*t208*/, sp[28*4] + + sub r4/*t49*/, r1, r0 << 1 + scale r1 + sub r0/*t87*/, r0, r2 << 1 + st.w r11[14*SLOTS*4], r1 + sub r2/*t138*/, r2, r3 << 1 + sub r1/*t203*/, r3, r5 << 1 + +/* Live: r0 = t87, r1= t203, r2= t138, r4 = t49 + Free: r3, r5, r6, r7, r8, r9, r10, lr */ + +/* t68 = (t98 * 2) + t49; + hi[12][slot] = SHIFT(-t49); + t130 = -(t163 * 2) + t98; + t201 = -(t188 * 2) + t163; + t200 = -(t186 * 2) + t154; + t111 = (t154 * 2) + t87; + t77 = -(-(t87 * 2) - t68); + t88 = (t146 * 2) + t77; + t199 = -(t184 * 2) + t146; + hi[ 8][slot] = SHIFT(-t77); + hi[10][slot] = SHIFT(t68);*/ + lddsp r3/*t98*/, sp[6*4] + lddsp r5/*t163*/, sp[14*4] + lddsp r6/*t188*/, sp[30*4] + lddsp r10/*t186*/, sp[24*4] + + add r7/*t68*/, r4, r3 << 1 + neg r4 + scale r4 + lddsp r9/*t154*/, sp[8*4] + sub r3/*t130*/, r3, r5 << 1 + st.w r11[12*SLOTS*4], r4 + sub r8/*t201*/, r5, r6 << 1 + sub r4/*t200*/, r9, r10 << 1 + lddsp lr/*t146*/, sp[10*4] + lddsp r6/*t184*/, sp[26*4] + add r10/*t111*/, r0, r9 << 1 + add r5/*t77*/,r7, r0 << 1 + add r0/*t88*/, r5, lr << 1 + sub r6/*t199*/, lr, r6 << 1 + neg r5 + scale r5 + scale r7 + st.w r11[8*SLOTS*4], r5 + st.w r11[10*SLOTS*4], r7 + +/* Live: r0 = t88, r1= t203, r2= t138, r3 = t130, r4 = t200, + r6 = 199, r8 = t201, r10 = t111 + Free: r5, r7, r9, lr */ + + +/* + t123 = -(-(t138 * 2) - t111); + t174 = (t183 * 2) + t138; + t99 = -(t111 * 2) + t88; + hi[ 6][slot] = SHIFT(t88); */ + lddsp r5/*t183*/, sp[20*4] + + add r7/*t123*/, r10, r2 << 1 + sub r10/*t99*/, r0, r10 << 1 + scale r0 + add r2/*t174*/, r2, r5 << 1 + st.w r11[6*SLOTS*4], r0 + +/* Live: r1 = t203, r2 = t174, r3 = t130, r4 = t200, + r6 = t199, r7 = t123, r8 = t201, r10 = t99 + Free: r0, r5, r9, lr */ + +/* t112 = -(t130 * 2) + t99; + t164 = (t181 * 2) + t130; + hi[ 4][slot] = SHIFT(-t99); */ + lddsp r0/*t181*/, sp[22*4] + + sub r5/*t112*/, r10, r3 << 1 + neg r10 + scale r10 + add r3/*164*/, r3, r0 << 1 + st.w r11[4*SLOTS*4], r10 + +/* Live: r1 = t203, r2 = t174, r3 = t164, r4 = t200, + r5 = t112, r6 = t199, r7 = t123, r8 = t201 + Free: r0, r9, r10, lr */ + + +/* t117 = -(-(t123 * 2) - t112); + t139 = (t179 * 2) + t123; + hi[ 2][slot] = SHIFT(t112); */ + lddsp r0/*t179*/, sp[16*4] + + add r9/*t117*/, r5, r7 << 1 + scale r5 + add r7/*t139*/, r7, r0 << 1 + st.w r11[2*SLOTS*4], r5 + +/* Live: r1 = t203, r2 = t174, r3 = t164, r4 = t200, + r6 = t199, r7 = t139, r8 = t201, r9 = t117 + Free: r0, r5, r10, lr */ + +/* t155 = -(t174 * 2) + t139; + t204 = -(-(t203 * 2) - t174); + t124 = (t177 * 2) + t117; + hi[ 0][slot] = SHIFT(-t117); + t131 = -(t139 * 2) + t124; + lo[ 1][slot] = SHIFT(t124);*/ + lddsp r0/*t177*/, sp[18*4] + + sub r5/*t155*/, r7, r2 << 1 + add r2/*t204*/, r2, r1 << 1 + add r0/*t124*/, r9, r0 << 1 + neg r9 + scale r9 + sub r7/*t131*/, r0, r7 << 1 + scale r0 + st.w r11[0*SLOTS*4], r9 + st.w r12[1*SLOTS*4], r0 + +/* Live: r2 = t204, r3 = t164, r4 = t200, + r5 = t155, r6 = t199, r7 = t131, r8 = t201 + Free: r0, r1, r9, r10, lr */ + +/* t140 = (t164 * 2) + t131; + lo[ 3][slot] = SHIFT(-t131); + t202 = -(-(t201 * 2) - t164); */ + add r0/*t140*/, r7, r3 << 1 + neg r7 + scale r7 + add r3/*t202*/, r3, r8 << 1 + st.w r12[3*SLOTS*4], r7 + +/* Live: r0 = t140, r2 = t204, r3 = t202, r4 = t200, + r5 = t155, r6 = t199 + Free: r1, r7, r8, r9, r10, lr */ + + +/* t147 = -(-(t155 * 2) - t140); + lo[ 5][slot] = SHIFT(t140); + t175 = -(t200 * 2) + t155; + t156 = -(t199 * 2) + t147; + lo[ 7][slot] = SHIFT(-t147); */ + add r1/*t147*/, r0, r5 << 1 + scale r0 + sub r5/*t175*/, r5, r4 << 1 + sub r4/*156*/, r1, r6 << 1 + neg r1 + scale r1 + st.w r12[5*SLOTS*4], r0 + st.w r12[7*SLOTS*4], r1 + +/* Live: r2 = t204, r3 = t202, + r4 = t156, r5 = t175 + Free: r0, r1, r6, r7, r8, r9, r10, lr */ + + +/* t205 = -(-(t204 * 2) - t175); + t165 = -(t175 * 2) + t156; + lo[ 9][slot] = SHIFT(t156); + t176 = -(t202 * 2) + t165; + lo[11][slot] = SHIFT(-t165); + t206 = -(-(t205 * 2) - t176); + lo[15][slot] = SHIFT(-t206) + lo[13][slot] = SHIFT(t176) */ + add r0/*t205*/, r5, r2 << 1 + sub r1/*t165*/, r4, r5 << 1 + scale r4 + sub r3/*t176*/, r1, r3 << 1 + st.w r12[9*SLOTS*4], r4 + neg r1 + scale r1 + add r6/*t206*/, r3, r0 << 1 + neg r6 + scale r6 + scale r3 + st.w r12[11*SLOTS*4], r1 + st.w r12[15*SLOTS*4], r6 + st.w r12[13*SLOTS*4], r3 + +/* t193 = -((t190 * 2) - t143) + hi[ 7][slot] = SHIFT(t143); + lo[ 8][slot] = SHIFT(-t193); + t82 = -(t104 * 2) + t58; + hi[13][slot] = SHIFT(t58); + t134 = -(t168 * 2) + t104; + t196 = -(t189 * 2) + t168; */ + + lddsp r0/*t190*/, sp[27*4] + lddsp r1/*t143*/, sp[11*4] + lddsp r2/*t104*/, sp[5*4] + lddsp r3/*t58*/, sp[1*4] + lddsp r4/*t168*/, sp[13*4] + lddsp r5/*t189*/, sp[29*4] + sub r0/*t193*/, r1, r0 << 1 + neg r0 + scale r1 + scale r0 + st.w r11[7*SLOTS*4], r1 + st.w r12[8*SLOTS*4], r0 + sub r0/*t82*/, r3, r2 << 1 + scale r3 + sub r2/*t134*/, r2, r4 << 1 + sub r4/*t196*/, r4, r5 << 1 + st.w r11[13*SLOTS*4], r3 + +/* Live: r0 = t82, r2 = t134, + r4 = t196 + Free: r1, r3, r5, r6, r7, r8, r9, r10, lr */ + + + +/* + + t207 = -(t185 * 2) + t150; + t105 = (t150 * 2) + t82; + hi[ 9][slot] = SHIFT(-t82); + t120 = -(-(t134 * 2) - t105); + hi[ 5][slot] = SHIFT(t105); + t169 = (t182 * 2) + t134; + + t135 = (t178 * 2) + t120; + hi[ 1][slot] = SHIFT(-t120); + t197 = -(-(t196 * 2) - t169); + t151 = -(t169 * 2) + t135; + lo[ 2][slot] = SHIFT(t135); */ + lddsp r1/*t185*/, sp[25*4] + lddsp r3/*t150*/, sp[9*4] + lddsp r5/*t182*/, sp[21*4] + lddsp r8/*t178*/, sp[17*4] + + sub r6/*t207*/, r3, r1 << 1 + add r3/*t105*/, r0, r3 << 1 + neg r0 + scale r0 + add r7/*t120*/, r3, r2 << 1 + scale r3 + st.w r11[9*SLOTS*4], r0 + st.w r11[5*SLOTS*4], r3 + add r2/*t169*/, r2, r5 << 1 + add r8/*t135*/, r7, r8 << 1 + neg r7 + scale r7 + add r4/*t197*/, r2, r4 << 1 + sub r2/*t151*/, r8, r2 << 1 + scale r8 + st.w r11[1*SLOTS*4], r7 + st.w r12[2*SLOTS*4], r8 + +/* Live: r2 = t151, r4 = t197, r6 = t207 + + Free: r0, r1, r3, r5, r7, r8, r9, r10, lr */ + + + +/* t170 = -(t207 * 2) + t151; + lo[ 6][slot] = SHIFT(-t151); + + t198 = -(-(t197 * 2) - t170); + lo[10][slot] = SHIFT(t170); + lo[14][slot] = SHIFT(-t198); + + t127 = -(t159 * 2) + t93; + hi[11][slot] = SHIFT(t93); + t194 = -(t187 * 2) + t159; */ + lddsp r0/*t159*/, sp[15*4] + lddsp r1/*t93*/, sp[7*4] + lddsp r3/*t187*/, sp[31*4] + sub r5/*t170*/, r2, r6 << 1 + neg r2 + scale r2 + add r4/*t198*/,r5, r4 << 1 + neg r4 + scale r5 + scale r4 + st.w r12[6*SLOTS*4], r2 + st.w r12[10*SLOTS*4], r5 + st.w r12[14*SLOTS*4], r4 + sub r7/*t127*/, r1, r0 << 1 + scale r1 + sub r0/*t194*/, r0, r3 << 1 + st.w r11[11*SLOTS*4], r1 + + +/* Live: r0 = t194, r7 = t127 + Free: r1, r2, r3, r4, r6, r5, r8, r9, r10, lr */ + +/* t160 = (t180 * 2) + t127; + hi[ 3][slot] = SHIFT(-t127); + t195 = -(-(t194 * 2) - t160); + lo[ 4][slot] = SHIFT(t160); + lo[12][slot] = SHIFT(-t195); + + hi[15][slot] = SHIFT(t191); + lo[ 0][slot] = SHIFT(t192); */ + lddsp r1/*t180*/, sp[23*4] + lddsp r2/*t191*/, sp[3*4] + lddsp r3/*t192*/, sp[19*4] + add r4/*t160*/, r7, r1 << 1 + neg r7 + scale r7 + add r6/*t195*/, r4, r0 << 1 + scale r4 + neg r6 + scale r6 + st.w r11[3*SLOTS*4], r7 + st.w r12[4*SLOTS*4], r4 + st.w r12[12*SLOTS*4], r6 + scale r2 + scale r3 + st.w r11[15*SLOTS*4], r2 + st.w r12[0*SLOTS*4], r3 + + sub sp, -32*4 + ldm sp++,r0-r7, r9-r11, pc diff --git a/fixed.h b/fixed.h index 4b58abf..0a1350a 100644 --- a/fixed.h +++ b/fixed.h @@ -237,6 +237,46 @@ mad_fixed_t mad_f_mul_inline(mad_fixed_t x, mad_fixed_t y) # define MAD_F_SCALEBITS MAD_F_FRACBITS # endif +/* --- AVR32 ----------------------------------------------------------------- */ + +# elif defined(FPM_AVR32) + +typedef signed short mad_coeff_t; + +struct DWstruct {int high, low;}; + +typedef union { + struct DWstruct s; + long long ll; +} DWunion; + +# define MAD_F_MLX(hi, lo, x, y) \ + { register DWunion __res; \ + __res.ll = (long long)x * (long long)y; \ + /* asm ("muls.d\t%0, %1, %2" : "=r" (__res.ll) : "r" (x), "r" (y));*/ \ + hi = __res.s.high; \ + lo = __res.s.low; } + +# define MAD_F_MLA(hi, lo, x, y) \ + { register DWunion __res; \ + __res.s.high = hi; \ + __res.s.low = lo; \ + __res.ll += (long long)x * (long long)y; \ +/* asm ("macs.d\t%0, %1, %2" : "+r" (__res.ll) : "r" (x), "r" (y));*/ \ + hi = __res.s.high; \ + lo = __res.s.low; } + + +# define MAD_F_MLN(hi, lo) \ + asm ("neg %0\n" \ + "acr %1\n" \ + "neg %1" \ + : "+r" (lo), "+r" (hi) \ + :: "cc") + + +# define MAD_F_SCALEBITS MAD_F_FRACBITS + /* --- ARM ----------------------------------------------------------------- */ # elif defined(FPM_ARM) @@ -433,6 +473,8 @@ mad_fixed_t mad_f_mul_inline(mad_fixed_t x, mad_fixed_t y) * * Pre-rounding is required to stay within the limits of compliance. */ +typedef signed int mad_coeff_t; + # if defined(OPT_SPEED) # define mad_f_mul(x, y) (((x) >> 12) * ((y) >> 16)) # else diff --git a/imdct_avr32.S b/imdct_avr32.S new file mode 100644 index 0000000..d0ee6b4 --- /dev/null +++ b/imdct_avr32.S @@ -0,0 +1,789 @@ +/* + Optimized 36-point Inverse Modified Cosine Transform (IMDCT) + Copyright 2003-2006 Atmel Corporation. + + Written by Ronny Pedersen, Atmel Norway + + 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, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#define MAD_F(x) ((x + (1 << 13)) >> 14) + + .public imdct36_avr32 + +/* + void imdct36(mad_fixed_t const x[18], mad_fixed_t y[36]) + { + mad_fixed_t tmp[18]; + int i; +*/ +/* DCT-IV */ +imdct36_avr32: + pushm r0-r7,r11,lr + sub sp, 4*18 +/* + { + mad_fixed_t tmp2[18]; + int i; + + /* scale[i] = 2 * cos(PI * (2 * i + 1) / (4 * 18)) */ +/* + static mad_fixed_t const scale[18] = { + MAD_F(0x1ff833fa), MAD_F(0x1fb9ea93), MAD_F(0x1f3dd120), + MAD_F(0x1e84d969), MAD_F(0x1d906bcf), MAD_F(0x1c62648b), + MAD_F(0x1afd100f), MAD_F(0x1963268b), MAD_F(0x1797c6a4), + MAD_F(0x159e6f5b), MAD_F(0x137af940), MAD_F(0x11318ef3), + MAD_F(0x0ec6a507), MAD_F(0x0c3ef153), MAD_F(0x099f61c5), + MAD_F(0x06ed12c5), MAD_F(0x042d4544), MAD_F(0x0165547c) + }; +*/ + + /* scaling */ + +/* + for (i = 0; i < 18; i += 3) { + tmp2[i + 0] = mad_f_mul(x[i + 0], scale[i + 0]); + tmp2[i + 1] = mad_f_mul(x[i + 1], scale[i + 1]); + tmp2[i + 2] = mad_f_mul(x[i + 2], scale[i + 2]); + } +*/ + /* even input butterfly */ + +/* + for (i = 0; i < 9; i += 3) { + tmp3[i + 0] = tmp2[i + 0] + tmp2[18 - (i + 0) - 1]; + tmp3[i + 1] = tmp2[i + 1] + tmp2[18 - (i + 1) - 1]; + tmp3[i + 2] = tmp2[i + 2] + tmp2[18 - (i + 2) - 1]; + } + for (i = 0; i < 9; i += 3) { + tmp4[i + 0] = tmp2[i + 0] - tmp2[18 - (i + 0) - 1]; + tmp4[i + 1] = tmp2[i + 1] - tmp2[18 - (i + 1) - 1]; + tmp4[i + 2] = tmp2[i + 2] - tmp2[18 - (i + 2) - 1]; + } +*/ + + ld.d r8, r12[0] /*r8 = x[1], r9 = x[0]*/ + ld.d r0, pc[scale_dctIV - .] /*r0 = {scale[2], scale[3]}, r1 = { scale[0], scale[1] }*/ + ld.d r2, r12[2*4] /*r2 = x[3], r3 = x[2]*/ + ld.d r4, pc[scale_dctIV - . + 14*2] /*r4 = {scale[16], scale[17]}, r5 = { scale[14], scale[15] }*/ + mulsatrndwh.w r9/*tmp2[0]*/, r9, r1:t /*tmp2[0] = mad_f_mul(x[0], scale[0]) */ + ld.d r6, r12[16*4] /*r6 = x[17], r7 = x[16]*/ + mulsatrndwh.w r8/*tmp2[1]*/, r8, r1:b /*tmp2[1] = mad_f_mul(x[1], scale[1]) */ + mulsatrndwh.w r3/*tmp2[2]*/, r3, r0:t /*tmp2[2] = mad_f_mul(x[2], scale[2]) */ + mulsatrndwh.w r2/*tmp2[3]*/, r2, r0:b /*tmp2[3] = mad_f_mul(x[3], scale[3]) */ + ld.d r0, r12[14*4] /*r0 = x[15], r1 = x[14]*/ + mulsatrndwh.w r7/*tmp2[16]*/, r7, r4:t /*tmp2[16] = mad_f_mul(x[16], scale[16]) */ + mulsatrndwh.w r6/*tmp2[17]*/, r6, r4:b /*tmp2[17] = mad_f_mul(x[17], scale[17]) */ + mulsatrndwh.w r1/*tmp2[14]*/, r1, r5:t /*tmp2[14] = mad_f_mul(x[14], scale[14]) */ + mulsatrndwh.w r0/*tmp2[15]*/, r0, r5:b /*tmp2[15] = mad_f_mul(x[15], scale[15]) */ + + ld.d r4, r12[4*4] /*r4 = x[5], r5 = x[4]*/ + + sub lr/*tmp4[0]*/, r9, r6 + add r6/*tmp3[0]*/, r9, r6 + sub r10/*tmp4[1]*/, r8, r7 + add r7/*tmp3[1]*/, r8, r7 + sub r9/*tmp4[2]*/, r3, r0 + add r0/*tmp3[2]*/, r3, r0 + sub r8/*tmp4[3]*/, r2, r1 + add r1/*tmp3[3]*/, r2, r1 + + ld.d r2, pc[scale_dctIV - . + 4*2] /*r2 = {scale[6], scale[7]}, r3 = { scale[4], scale[5] }*/ + + stm --sp, r8-r10, lr /*sp[0] = tmp4[0],sp[1] = tmp4[1], + sp[2] = tmp4[2],sp[3] = tmp4[3] */ + + /* Registers used: r0 = tmp3[2], r1 = tmp3[3], r6 = tmp3[0], r7 = tmp3[1], r12 = x + Free registers: r2-r5, r8-r11, lr + */ + ld.d r8, r12[6*4] /*r8 = x[7], r9 = x[6]*/ + ld.d r10, pc[scale_dctIV - . + 10*2] /*r10 = {scale[12], scale[13]}, r11 = { scale[10], scale[11] }*/ + mulsatrndwh.w r5/*tmp2[4]*/, r5, r3:t /*tmp2[4] = mad_f_mul(x[4], scale[4]) */ + mulsatrndwh.w r4/*tmp2[5]*/, r4, r3:b /*tmp2[5] = mad_f_mul(x[5], scale[5]) */ + mulsatrndwh.w r9/*tmp2[6]*/, r9, r2:t /*tmp2[6] = mad_f_mul(x[6], scale[6]) */ + mulsatrndwh.w r8/*tmp2[7]*/, r8, r2:b /*tmp2[7] = mad_f_mul(x[7], scale[7]) */ + + ld.d r2, r12[12*4] /*r2 = x[13], r3 = x[12]*/ + ld.w lr, r12[11*4] /*lr = x[11] */ + mulsatrndwh.w r3/*tmp2[12]*/, r3, r10:t /*tmp2[12] = mad_f_mul(x[12], scale[12]) */ + mulsatrndwh.w r2/*tmp2[13]*/, r2, r10:b /*tmp2[13] = mad_f_mul(x[13], scale[13]) */ + ld.w r10, r12[10*4] /*r10 = x[10] */ + mulsatrndwh.w lr/*tmp2[11]*/, lr, r11:b /*tmp2[11] = mad_f_mul(x[11], scale[11]) */ + mulsatrndwh.w r10/*tmp2[10]*/, r10, r11:t /*tmp2[10] = mad_f_mul(x[10], scale[10]) */ + + sub r11/*tmp4[4]*/, r5, r2 + add r2/*tmp3[4]*/, r5, r2 + sub r5/*tmp4[5]*/, r4, r3 + add r3/*tmp3[5]*/, r4, r3 + sub r4/*tmp4[6]*/, r9, lr + add lr/*tmp3[6]*/, r9, lr + sub r9/*tmp4[7]*/, r8, r10 + add r10/*tmp3[7]*/, r8, r10 + lddpc r8, scale_dctIV + 8*2 /*r8 = {scale[8], scale[9]} */ + + stm --sp, r4, r5, r9, r11 /*sp[0] = tmp4[4],sp[1] = tmp4[7], + sp[2] = tmp4[5],sp[3] = tmp4[6] */ + ld.d r4, r12[8*4] /*r4 = x[9], r5 = x[8]*/ + mulsatrndwh.w r5/*tmp2[8]*/, r5, r8:t /*tmp2[8] = mad_f_mul(x[8], scale[8]) */ + mulsatrndwh.w r4/*tmp2[9]*/, r4, r8:b /*tmp2[9] = mad_f_mul(x[9], scale[9]) */ + sub r9/*tmp4[8]*/, r5, r4 + add r5/*tmp3[8]*/, r5, r4 + + st.w --sp, r9 /* sp[0] = tmp4[8] */ + + /* Registers used: + + r0=tmp3[2], r1=tmp3[3], r2=tmp3[4], r3=tmp3[5], r5=tmp3[8], r6 = tmp3[0], + r7 = tmp3[1], r10=tmp3[7], lr=tmp3[6] + Free registers: + r4, r8, r9, r11, r12 + */ + + + /* SDCT-II */ +/* + + { + mad_fixed_t tmp3[9]; + int i; +*/ + /* scale[i] = 2 * cos(PI * (2 * i + 1) / (2 * 18)) */ +/* + static mad_fixed_t const scale[9] = { + MAD_F(0x1fe0d3b4), MAD_F(0x1ee8dd47), MAD_F(0x1d007930), + MAD_F(0x1a367e59), MAD_F(0x16a09e66), MAD_F(0x125abcf8), + MAD_F(0x0d8616bc), MAD_F(0x08483ee1), MAD_F(0x02c9fad7) + }; +*/ + /* divide the 18-point SDCT-II into two 9-point SDCT-IIs */ + + + /* fastdct */ + +/* + { + mad_fixed_t a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12; + mad_fixed_t a13, a14, a15, a16, a17, a18, a19, a20, a21, a22, a23, a24, a25; + mad_fixed_t m0, m1, m2, m3, m4, m5, m6, m7; +*/ +// enum { +// c0 = MAD_F(0x1f838b8d), /* 2 * cos( 1 * PI / 18) */ +// c1 = MAD_F(0x1bb67ae8), /* 2 * cos( 3 * PI / 18) */ +// c2 = MAD_F(0x18836fa3), /* 2 * cos( 4 * PI / 18) */ +// c3 = MAD_F(0x1491b752), /* 2 * cos( 5 * PI / 18) */ +// c4 = MAD_F(0x0af1d43a), /* 2 * cos( 7 * PI / 18) */ +// c5 = MAD_F(0x058e86a0), /* 2 * cos( 8 * PI / 18) */ +// c6 = -MAD_F(0x1e11f642) /* 2 * cos(16 * PI / 18) */ +// }; + +/* + a2 = tmp3[6] + tmp3[2]; + a6 = tmp3[8] + tmp3[0]; + a11 = a2 - a6; + m5 = mad_f_mul(a11, -c6) ; + a4 = tmp3[1] + tmp3[7]; + + a18 = tmp3[4] + a4; + a19 = -2 * tmp3[4] + a4; + + a0 = tmp3[3] + tmp3[5]; + +*/ + add r11/*a4*/, r7, r10 + add r12/*a18*/, r2, r11 + sub r11/*a19*/, r11, r2<<1 + + add r4/*a2*/, lr, r0 + add r8/*a6*/, r5, r6 + sub r9/*a11*/, r4, r8 + + st.d --sp, r0 /* sp[0] = tmp3[3], sp1[1] = tmp3[2]*/ + + mov r2, MAD_F(0x1e11f642) + mulsatrndwh.w r9/*m5*/, r9, r2:b + + add r2/*a0*/, r1, r3 + + /* Registers used: + + r2=a0, r3=tmp3[5], r4=a2, r5=tmp3[8], r6 = tmp3[0], + r7 = tmp3[1], r8=a6, r10=tmp3[7], r9=m5, r11=a19, r12=a18,lr=tmp3[6] + Free registers: + r0, r1 + */ + +/* + a8 = a0 + a2; + a12 = a8 + a6; + a10 = a0 - a6; + a9 = a0 - a2; + m7 = mad_f_mul(a9, -c2) ; + m6 = mad_f_mul(a10, -c5) ; +*/ + + add r0/*a8*/, r2, r4 + add r0/*a12*/, r8 + rsub r8/*a10*/, r2 + sub r2/*a9*/, r4 + mov r1, -MAD_F(0x18836fa3) + mulsatrndwh.w r2/*m7*/, r2, r1:b + mov r1, -MAD_F(0x058e86a0) + mulsatrndwh.w r8/*m6*/, r8, r1:b + + /* Registers used: + + r0=a12, r2=m7, r3=tmp3[5], r5=tmp3[8], r6 = tmp3[0], + r7 = tmp3[1], r8=m6, r10=tmp3[7], r9=m5, r11=a19, r12=a18,lr=tmp3[6] + Free registers: + r1, r4 + */ + + +/* + a21 = -a19 - (m5 << 1); + tmp[ 8] = a21 - (m6 << 1); + + a20 = a19 - (m5 << 1); + tmp[ 4] = (m7 << 1) + a20; + a22 = -a19 + (m6 << 1); + tmp[16] = a22 + (m7 << 1); + tmp[ 0] = a18 + a12; + tmp[12] = a12 - 2 * a18; +*/ + add r1/*a21*/, r11, r9 << 1 + neg r1 + sub r1/*tmp[8]*/, r1, r8 << 1 + stdsp sp[4*11/*tmp3[..] on the stack*/ + 8*4], r1 + sub r4/*a20*/, r11, r9 << 1 + add r4/*tmp[4]*/, r4, r2 << 1 + stdsp sp[4*11/*tmp3[..] on the stack*/ + 4*4], r4 + neg r11 + add r1/*a22*/, r11, r8 << 1 + add r1/*tmp[16]*/, r1, r2 << 1 + stdsp sp[4*11/*tmp3[..] on the stack*/ + 16*4], r1 + add r4, r12, r0 + sub r1, r0, r12 << 1 + stdsp sp[4*11/*tmp3[..] on the stack*/ + 0*4], r4 + stdsp sp[4*11/*tmp3[..] on the stack*/ + 12*4], r1 + + ld.d r0, sp++ + + /* Registers used: + + r0 = tmp3[2], r1 = tmp3[3], r3=tmp3[5], r5=tmp3[8], r6 = tmp3[0], + r7 = tmp3[1], r10=tmp3[7], r11=a19, lr=tmp3[6] + Free registers: + r2,r4,r8,r9,r12 + */ + +/* + a5 = tmp3[1] - tmp3[7]; + a7 = tmp3[8] - tmp3[0]; + a3 = tmp3[6] - tmp3[2]; + a1 = tmp3[3] - tmp3[5]; + a13 = a1 - a3; + a14 = a13 + a7; + m3 = mad_f_mul(a14, -c1) ; + m4 = mad_f_mul(a5, -c1) ; + tmp[ 6] = m3 << 1; +*/ + sub r7/*a5*/, r10 + sub r2/*a7*/, r5, r6 + sub r4/*a3*/, lr, r0 + sub r8/*a1*/, r1, r3 + sub r9/*a13*/, r8, r4 + add r12/*a14*/, r9, r2 + mov r0, -MAD_F(0x1bb67ae8) + mulsatrndwh.w r12/*m3*/, r12, r0:b + mulsatrndwh.w r7/*m4*/, r7, r0:b + lsl r12, 1 + stdsp sp[4*9/*tmp3[..] on the stack*/ + 6*4], r12 + + /* Registers used: + r2 = a7, r4 = a3, r7 = m4, r8 = a1, r12 = m3 + + Free registers: + r0, r1, r3, r5, r6, r10, r9, r11, lr + */ + + +/* + a15 = a3 + a7; + m2 = mad_f_mul(a15, -c4) ; + a17 = a1 + a3; + m0 = mad_f_mul(a17, -c3) ; + a23 = (m4 << 1) + (m2 << 1); + tmp[14] = a23 + (m0 << 1); */ + add r0/*a15*/, r4, r2 + mov r1, -MAD_F(0x0af1d43a) + mulsatrndwh.w r0/*m2*/, r0, r1:b + mov r3, -MAD_F(0x1491b752) + add r5/*a17*/, r8, r4 + mulsatrndwh.w r5/*m0*/, r5, r3:b + lsl r7, 1 + add r6/*a23*/, r7, r0 << 1 + add r6/*tmp[14]*/, r6, r5 << 1 + stdsp sp[4*9/*tmp3[..] on the stack*/ + 14*4], r6 + + /* Registers used: + r0 = m2, r2 = a7, r5 = m0, r7 = m4, r8 = a1 + + Free registers: + r1, r3, r4, r6, r10, r9, r11, lr + */ + +/* + a16 = a1 - a7; + m1 = mad_f_mul(a16, -c0) ; + a24 = (m4 << 1) - (m2 << 1); + tmp[10] = a24 - (m1 << 1); + + a25 = (m4 << 1) + (m1 << 1); + tmp[ 2] = (m0 << 1) - a25; +*/ + sub r3/*a16*/, r8, r2 + mov r4, -MAD_F(0x1f838b8d) + mulsatrndwh.w r3/*m1*/, r3, r4:b + sub r1/*a24*/, r7, r0 << 1 + sub r1/*tmp[10]*/, r1, r3 << 1 + stdsp sp[4*9/*tmp3[..] on the stack*/ + 10*4], r1 + add r7/*a25*/, r7, r3 << 1 + sub r7, r7, r5 << 1 + neg r7 + stdsp sp[4*9/*tmp3[..] on the stack*/ + 2*4], r7 + + + + + /* output to every other slot for convenience */ + + /*} */ + /* End fastdct */ + + /* odd input butterfly and scaling */ + + + /* On the stack: + sp[0] = tmp4[8], sp[1] = tmp4[4],sp[2] = tmp4[7], sp[3] = tmp4[5],sp[4] = tmp4[6] + sp[5] = tmp4[0], sp[6] = tmp4[1],sp[7] = tmp4[2],sp[8] = tmp4[3] + */ + + /* + tmp3[0] = mad_f_mul(tmp4[0], scale[0]); + tmp3[1] = mad_f_mul(tmp4[1], scale[1]) << 1; + tmp3[2] = mad_f_mul(tmp4[2], scale[2]); + tmp3[3] = mad_f_mul(tmp4[3], scale[3]) << 1; + tmp3[4] = mad_f_mul(tmp4[4], scale[4]); + tmp3[5] = mad_f_mul(tmp4[5], scale[5]); + tmp3[6] = mad_f_mul(tmp4[6], scale[6]) << 1; + tmp3[7] = mad_f_mul(tmp4[7], scale[7]); + tmp3[8] = mad_f_mul(tmp4[8], scale[8]) << 1; + */ + /* Registers used: + r1 = tmp4[3], r2 = tmp4[2], r3 = tmp4[1], r4 = tmp4[0], r7 = tmp4[6] + r10 = tmp4[5], r11 = tmp4[7], r12 = tmp4[4], lr = tmp4[8] + + Free registers: + r0, r5, r6, r8, r9 + */ + ld.d r8, pc[ scale_sdctII - . + 4*2] /* r8 = { scale[6], scale[7] }, r9 = { scale[4], scale[5]} */ + ldm sp++, r1, r2, r3, r4, r7, r10, r11, r12, lr + mov r5, MAD_F(0x02c9fad7) /* r3 = scale[8] */ + mulsatrndwh.w r5/*tmp3[8]*/, lr, r5:b + mulsatrndwh.w lr/*tmp3[6]*/, r7, r8:t + ld.d r6, pc[ scale_sdctII - . + 0*2] /* r6 = { scale[2], scale[3] }, r7 = { scale[0], scale[1]} */ + lsl lr, 1 + lsl r5, 1 + mulsatrndwh.w r0/*tmp3[2]*/, r2, r6:t + mulsatrndwh.w r1/*tmp3[3]*/, r1, r6:b + mulsatrndwh.w r6/*tmp3[0]*/, r4, r7:t + mulsatrndwh.w r7/*tmp3[1]*/, r3, r7:b + mulsatrndwh.w r3/*tmp3[5]*/, r10, r9:b + mulsatrndwh.w r2/*tmp3[4]*/, r12, r9:t + mulsatrndwh.w r9/*tmp3[7]*/, r11, r8:b + lsl r1, 1 + lsl r7, 1 + + + /* fastdct */ + +/* + { + mad_fixed_t a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12; + mad_fixed_t a13, a14, a15, a16, a17, a18, a19, a20, a21, a22, a23, a24, a25; + mad_fixed_t m0, m1, m2, m3, m4, m5, m6, m7; +*/ +// enum { +// c0 = MAD_F(0x1f838b8d), /* 2 * cos( 1 * PI / 18) */ +// c1 = MAD_F(0x1bb67ae8), /* 2 * cos( 3 * PI / 18) */ +// c2 = MAD_F(0x18836fa3), /* 2 * cos( 4 * PI / 18) */ +// c3 = MAD_F(0x1491b752), /* 2 * cos( 5 * PI / 18) */ +// c4 = MAD_F(0x0af1d43a), /* 2 * cos( 7 * PI / 18) */ +// c5 = MAD_F(0x058e86a0), /* 2 * cos( 8 * PI / 18) */ +// c6 = -MAD_F(0x1e11f642) /* 2 * cos(16 * PI / 18) */ +// }; + + /* Registers used: + + r0=tmp3[2], r1=tmp3[3], r2=tmp3[4], r3=tmp3[5], r5=tmp3[8], r6 = tmp3[0], + r7 = tmp3[1], r9=tmp3[7], lr=tmp3[6] + Free registers: + r4, r8, r10, r11, r12 + */ + +/* + a2 = tmp3[6] + (tmp3[2] << 1); + a6 = tmp3[8] + (tmp3[0] << 1); + a11 = a2 - a6; + m5 = mad_f_mul(a11, c6) ; + a4 = tmp3[1] + (tmp3[7] << 1); + + a18 = (tmp3[4] << 1) + a4; + a19 = -2 * (tmp3[4] << 1) + a4; + + a0 = tmp3[3] + (tmp3[5] << 1); + +*/ + add r11/*a4*/, r7, r9 << 1 + add r12/*a18*/, r11, r2 << 1 + sub r11/*a19*/, r11, r2 << 2 + + add r4/*a2*/, lr, r0 << 1 + add r8/*a6*/, r5, r6 << 1 + sub r10/*a11*/, r4, r8 + + st.d --sp, r0 /* sp[0] = tmp3[3], sp1[1] = tmp3[2]*/ + + mov r2, -MAD_F(0x1e11f642) + mulsatrndwh.w r10/*m5*/, r10, r2:b + + add r2/*a0*/, r1, r3 << 1 + + /* Registers used: + + r2=a0, r3=tmp3[5], r4=a2, r5=tmp3[8], r6 = tmp3[0], + r7 = tmp3[1], r8=a6, r9=tmp3[7], r10=m5, r11=a19, r12=a18,lr=tmp3[6] + Free registers: + r0, r1 + */ + +/* + a8 = a0 + a2; + a12 = a8 + a6; + a10 = a0 - a6; + a9 = a0 - a2; + m7 = mad_f_mul(a9, -c2) ; + m6 = mad_f_mul(a10, -c5) ; +*/ + + add r0/*a8*/, r2, r4 + add r0/*a12*/, r8 + rsub r8/*a10*/, r2 + sub r2/*a9*/, r4 + mov r1, -MAD_F(0x18836fa3) + mulsatrndwh.w r2/*m7*/, r2, r1:b + mov r1, -MAD_F(0x058e86a0) + mulsatrndwh.w r8/*m6*/, r8, r1:b + + /* Registers used: + + r0=a12, r2=m7, r3=tmp3[5], r5=tmp3[8], r6 = tmp3[0], + r7 = tmp3[1], r8=m6, r9=tmp3[7], r10=m5, r11=a19, r12=a18,lr=tmp3[6] + Free registers: + r1, r4 + */ + + +/* + a21 = -a19 + (m5 << 1); + tmp[ 9] = a21 - (m6 << 1); + + a20 = -(-a19 - (m5 << 1)); + tmp[ 5] = (m7 << 1) + a20; + a22 = -a19 + (m6 << 1); + tmp[17] = a22 + (m7 << 1); + tmp[ 1] = a18 + a12; + tmp[13] = a12 - 2 * a18; +*/ + sub r1/*a21*/, r11, r10 << 1 + neg r1 + sub r1/*tmp[9]*/, r1, r8 << 1 + stdsp sp[4*2/*tmp3[..] on the stack*/ + 9*4], r1 + add r4/*a20*/, r11, r10 << 1 + add r4/*tmp[5]*/, r4, r2 << 1 + stdsp sp[4*2/*tmp3[..] on the stack*/ + 5*4], r4 + neg r11 + add r1/*a22*/, r11, r8 << 1 + add r1/*tmp[17]*/, r1, r2 << 1 + stdsp sp[4*2/*tmp3[..] on the stack*/ + 17*4], r1 + add r4, r12, r0 + sub r1, r0, r12 << 1 + stdsp sp[4*2/*tmp3[..] on the stack*/ + 1*4], r4 + stdsp sp[4*2/*tmp3[..] on the stack*/ + 13*4], r1 + + ld.d r0, sp++ + + /* Registers used: + + r0 = tmp3[2], r1 = tmp3[3], r3=tmp3[5], r5=tmp3[8], r6 = tmp3[0], + r7 = tmp3[1], r9=tmp3[7], r11=a19, lr=tmp3[6] + Free registers: + r2,r4,r8,r10,r12 + */ + +/* + a5 = tmp3[1] - (tmp3[7] << 1); + a7 = tmp3[8] - (tmp3[0] << 1); + a3 = tmp3[6] - (tmp3[2] << 1); + a1 = tmp3[3] - (tmp3[5] << 1); + a13 = a1 - a3; + a14 = a13 + a7; + m3 = mad_f_mul(a14, -c1) ; + m4 = mad_f_mul(a5, -c1) ; + tmp[ 7] = m3 << 1; +*/ + sub r7/*a5*/, r7, r9 << 1 + sub r2/*a7*/, r5, r6 << 1 + sub r4/*a3*/, lr, r0 << 1 + sub r8/*a1*/, r1, r3 << 1 + sub r10/*a13*/, r8, r4 + add r12/*a14*/, r10, r2 + mov r0, -MAD_F(0x1bb67ae8) + mulsatrndwh.w r12/*m3*/, r12, r0:b + mulsatrndwh.w r7/*m4*/, r7, r0:b + lsl r12, 1 + stdsp sp[7*4], r12 + + /* Registers used: + r2 = a7, r4 = a3, r7 = m4, r8 = a1, r12 = m3 + + Free registers: + r0, r1, r3, r5, r6, r9, r10, r11, lr + */ + + +/* + a15 = a3 + a7; + m2 = mad_f_mul(a15, -c4) ; + a17 = a1 + a3; + m0 = mad_f_mul(a17, -c3) ; + a23 = (m4 << 1) + (m2 << 1); + tmp[15] = a23 + (m0 << 1); */ + add r0/*a15*/, r4, r2 + mov r1, -MAD_F(0x0af1d43a) + mulsatrndwh.w r0/*m2*/, r0, r1:b + mov r3, -MAD_F(0x1491b752) + add r5/*a17*/, r8, r4 + mulsatrndwh.w r5/*m0*/, r5, r3:b + lsl r7, 1 + add r6/*a23*/, r7, r0 << 1 + add r6/*tmp[15]*/, r6, r5 << 1 + stdsp sp[15*4], r6 + + /* Registers used: + r0 = m2, r2 = a7, r5 = m0, r7 = m4, r8 = a1 + + Free registers: + r1, r3, r4, r6, r9, r10, r11, lr + */ + +/* + a16 = a1 - a7; + m1 = mad_f_mul(a16, -c0) ; + a24 = (m4 << 1) - (m2 << 1); + tmp[11] = a24 - (m1 << 1); + + a25 = (m4 << 1) + (m1 << 1); + tmp[ 3] = (m0 << 1) - a25; +*/ + sub r3/*a16*/, r8, r2 + mov r4, -MAD_F(0x1f838b8d) + mulsatrndwh.w r3/*m1*/, r3, r4:b + sub r1/*a24*/, r7, r0 << 1 + sub r1/*tmp[11]*/, r1, r3 << 1 + stdsp sp[11*4], r1 + add r7/*a25*/, r7, r3 << 1 + sub r7, r7, r5 << 1 + neg r7 + lddsp r12, sp[4*18+4] /* Get y from stack */ + stdsp sp[3*4], r7 + + + /* output to every other slot for convenience */ + + /* End fastdct */ + + /* output accumulation */ + +/* for (i = 3; i < 18; i += 8) { + tmp[i + 0] -= tmp[(i + 0) - 2]; + tmp[i + 2] -= tmp[(i + 2) - 2]; + tmp[i + 4] -= tmp[(i + 4) - 2]; + tmp[i + 6] -= tmp[(i + 6) - 2]; + } + } +*/ + +/* End SDCT-II */ + + + + /* scale reduction and output accumulation */ + +/* + for (i = 1; i < 17; i += 4) { + tmp[i + 0] = tmp[i + 0] - tmp[(i + 0) - 1]; + tmp[i + 1] = tmp[i + 1] - tmp[(i + 1) - 1]; + tmp[i + 2] = tmp[i + 2] - tmp[(i + 2) - 1]; + tmp[i + 3] = tmp[i + 3] - tmp[(i + 3) - 1]; + } + tmp[17] = tmp[17] - tmp[16]; + } +*/ +/* End DCT-IV */ + + + /* convert 18-point DCT-IV to 36-point IMDCT */ + +/* + for (i = 0; i < 9; i += 3) { + y[i + 0] = tmp[9 + (i + 0)]; + y[i + 1] = tmp[9 + (i + 1)]; + y[i + 2] = tmp[9 + (i + 2)]; + } + for (i = 9; i < 27; i += 3) { + y[i + 0] = -tmp[36 - (9 + (i + 0)) - 1]; + y[i + 1] = -tmp[36 - (9 + (i + 1)) - 1]; + y[i + 2] = -tmp[36 - (9 + (i + 2)) - 1]; + } + for (i = 27; i < 36; i += 3) { + y[i + 0] = -tmp[(i + 0) - 27]; + y[i + 1] = -tmp[(i + 1) - 27]; + y[i + 2] = -tmp[(i + 2) - 27]; + } + } +*/ + + /* Registers used: + r0 = tmp[8], r1 = tmp[7], r2 = tmp[6], r3 = tmp[5], r4 = tmp[4] + r5 = tmp[3], r6 = tmp[2], r7 = tmp[1], r8 = tmp[0], r12 = y + + Free registers: + r9, r10, r11, lr + */ + + ldm sp++, r0-r8 /* Get tmp[0]-tmp[8] from stack */ + sub r5, r7 /* tmp[3] -= tmp[1]*/ + sub r3, r5 /* tmp[5] -= tmp[3]*/ + sub r1, r3 /* tmp[7] -= tmp[5]*/ + + sub r7, r8 /* tmp[1] -= tmp[0]*/ + sub r6, r7 /* tmp[2] -= tmp[1]*/ + sub r5, r6 /* tmp[3] -= tmp[2]*/ + neg r8 + st.w r12[26*4], r8 /* y[26] = -tmp[0] */ + st.w r12[27*4], r8 /* y[27] = -tmp[0] */ + neg r7 + neg r6 + st.w r12[25*4], r7 /* y[25] = -tmp[1] */ + st.w r12[24*4], r6 /* y[24] = -tmp[2] */ + st.d r12[28*4], r6 /* y[28] = -tmp[1], y[29] = -tmp[2]*/ + + sub r4, r5 /* tmp[4] -= tmp[3]*/ + sub r3, r4 /* tmp[5] -= tmp[4]*/ + neg r5 + neg r4 + st.w r12[23*4], r5 /* y[23] = -tmp[3] */ + st.w r12[22*4], r4 /* y[22] = -tmp[4] */ + st.d r12[30*4], r4 /* y[30] = -tmp[3], y[31] = -tmp[4]*/ + + ldm sp++, r4-r11,lr /* Get tmp[9]-tmp[17] from stack */ + + sub r2, r3 /* tmp[6] -= tmp[5]*/ + + sub lr, r1 /* tmp[9] -= tmp[7]*/ + sub r10, lr /* tmp[11] -= tmp[9]*/ + sub r8, r10 /* tmp[13] -= tmp[11]*/ + sub r6, r8 /* tmp[15] -= tmp[13]*/ + sub r4, r6 /* tmp[17] -= tmp[15]*/ + + sub r1, r2 /* tmp[7] -= tmp[6]*/ + sub r0, r1 /* tmp[8] -= tmp[7]*/ + neg r3 + neg r2 + st.w r12[21*4], r3 /* y[21] = -tmp[5] */ + st.w r12[20*4], r2 /* y[20] = -tmp[6] */ + st.d r12[32*4], r2 /* y[32] = -tmp[5], y[33] = -tmp[6]*/ + + sub lr, r0 /* tmp[9] -= tmp[8]*/ + sub r11, lr /* tmp[10] -= tmp[9]*/ + neg r1 + neg r0 + st.w r12[19*4], r1 /* y[19] = -tmp[7] */ + st.w r12[18*4], r0 /* y[18] = -tmp[8] */ + st.d r12[34*4], r0 /* y[34] = -tmp[7], y[35] = -tmp[8]*/ + + sub r10, r11 /* tmp[11] -= tmp[10]*/ + sub r9, r10 /* tmp[12] -= tmp[11]*/ + + st.w r12[0*4], lr /* y[0] = tmp[9]*/ + neg lr + st.w r12[17*4], lr /* y[17] = -tmp[9]*/ + st.d r12[1*4], r10 /* y[1] = tmp[10], y[2] = tmp[11] */ + neg r11 + neg r10 + st.w r12[16*4], r11 /* y[16] = -tmp[10] */ + st.w r12[15*4], r10 /* y[15] = -tmp[11] */ + + + sub r8, r9 /* tmp[13] -= tmp[12]*/ + sub r7, r8 /* tmp[14] -= tmp[13]*/ + st.d r12[3*4], r8 /* y[3] = tmp[12], y[4] = tmp[13] */ + neg r9 + neg r8 + st.w r12[14*4], r9 /* y[14] = -tmp[12] */ + st.w r12[13*4], r8 /* y[13] = -tmp[13] */ + + sub r6, r7 /* tmp[15] -= tmp[14]*/ + sub r5, r6 /* tmp[16] -= tmp[15]*/ + sub r4, r5 /* tmp[17] -= tmp[16]*/ + + st.d r12[5*4], r6 /* y[5] = tmp[14], y[6] = tmp[15] */ + neg r7 + neg r6 + st.w r12[12*4], r7 /* y[12] = -tmp[14] */ + st.w r12[11*4], r6 /* y[11] = -tmp[15] */ + + st.d r12[7*4], r4 /* y[7] = tmp[16], y[8] = tmp[17] */ + neg r5 + neg r4 + st.w r12[10*4], r5 /* y[10] = -tmp[16] */ + st.w r12[9*4], r4 /* y[9] = -tmp[17] */ + + popm r0-r7,r11,pc + + .align 2 +scale_dctIV: + .short MAD_F(0x1ff833fa), MAD_F(0x1fb9ea93), MAD_F(0x1f3dd120) + .short MAD_F(0x1e84d969), MAD_F(0x1d906bcf), MAD_F(0x1c62648b) + .short MAD_F(0x1afd100f), MAD_F(0x1963268b), MAD_F(0x1797c6a4) + .short MAD_F(0x159e6f5b), MAD_F(0x137af940), MAD_F(0x11318ef3) + .short MAD_F(0x0ec6a507), MAD_F(0x0c3ef153), MAD_F(0x099f61c5) + .short MAD_F(0x06ed12c5), MAD_F(0x042d4544), MAD_F(0x0165547c) + + .align 2 +scale_sdctII: + .short MAD_F(0x1fe0d3b4), MAD_F(0x1ee8dd47), MAD_F(0x1d007930) + .short MAD_F(0x1a367e59), MAD_F(0x16a09e66), MAD_F(0x125abcf8) + .short MAD_F(0x0d8616bc), MAD_F(0x08483ee1), MAD_F(0x02c9fad7) diff --git a/layer3.c b/layer3.c index 4e5d3fa..dffdab3 100644 --- a/layer3.c +++ b/layer3.c @@ -378,6 +378,11 @@ mad_fixed_t const ca[8] = { -MAD_F(0x003a2847) /* -0.014198569 */, -MAD_F(0x000f27b4) /* -0.003699975 */ }; +#ifdef FPM_AVR32 +# undef MAD_F +# define MAD_F(x) ((x + (1 << 12)) >> 13) +#endif + /* * IMDCT coefficients for short blocks * derived from section 2.4.3.4.10.2 of ISO/IEC 11172-3 @@ -386,7 +391,7 @@ mad_fixed_t const ca[8] = { * imdct_s[i /odd][k] = cos((PI / 24) * (2 * (6 + (i-1)/2) + 7) * (2 * k + 1)) */ static -mad_fixed_t const imdct_s[6][6] = { +mad_coeff_t const imdct_s[6][6] = { # include "imdct_s.dat" }; @@ -398,7 +403,7 @@ mad_fixed_t const imdct_s[6][6] = { * window_l[i] = sin((PI / 36) * (i + 1/2)) */ static -mad_fixed_t const window_l[36] = { +mad_coeff_t const window_l[36] = { MAD_F(0x00b2aa3e) /* 0.043619387 */, MAD_F(0x0216a2a2) /* 0.130526192 */, MAD_F(0x03768962) /* 0.216439614 */, MAD_F(0x04cfb0e2) /* 0.300705800 */, MAD_F(0x061f78aa) /* 0.382683432 */, MAD_F(0x07635284) /* 0.461748613 */, @@ -429,7 +434,7 @@ mad_fixed_t const window_l[36] = { * window_s[i] = sin((PI / 12) * (i + 1/2)) */ static -mad_fixed_t const window_s[12] = { +mad_coeff_t const window_s[12] = { MAD_F(0x0216a2a2) /* 0.130526192 */, MAD_F(0x061f78aa) /* 0.382683432 */, MAD_F(0x09bd7ca0) /* 0.608761429 */, MAD_F(0x0cb19346) /* 0.793353340 */, MAD_F(0x0ec835e8) /* 0.923879533 */, MAD_F(0x0fdcf549) /* 0.991444861 */, @@ -438,6 +443,11 @@ mad_fixed_t const window_s[12] = { MAD_F(0x061f78aa) /* 0.382683432 */, MAD_F(0x0216a2a2) /* 0.130526192 */, }; +#ifdef FPM_AVR32 +# undef MAD_F +# define MAD_F(x) ((mad_fixed_t) (x##L)) +#endif + /* * coefficients for intensity stereo processing * derived from section 2.4.3.4.9.3 of ISO/IEC 11172-3 @@ -879,6 +889,42 @@ void III_exponents(struct channel const *channel, * NAME: III_requantize() * DESCRIPTION: requantize one (positive) value */ + +#if 0 +/*static*/ +mad_fixed_t III_requantize(unsigned int value, signed int exp) +{ + register mad_fixed_t tmp2, tmp3; + long long tmp_d; + + asm ("asr\t%0, %1, 2\n" + "ld.w\t%2, %4[%5 << 2]\n" + "sub\t%1, %1, %0 << 2\n" + "asr\t%3, %2, 7\n" + "andl\t%2, 0x7f, COH\n" + "add\t%0, %2\n" + "lsl\t%m0,%3,%0\n" + "neg\t%0\n" + "asr\t%3,%3,%0\n" + "add\t%2, %6, %1 << 2\n" + "ld.w\t%2, %2[12]\n" + "cp.w\t%0, 0\n" + "movlt\t%3, %m0\n" + "muls.d\t%0, %3, %2\n" + "cp.w\t%1, 0\n" + "breq\t0f\n" + "lsr\t%0, %0, 28\n" + "or\t%3, %0, %m0 << 4\n" + "0:\n" + : "=&r"(tmp_d), "+r"(exp), "=&r"(tmp2), "=&r"(tmp3) + : "r"(&rq_table), "r"(value), "r"(root_table)); + + + return tmp3; +} + +#else + static mad_fixed_t III_requantize(unsigned int value, signed int exp) { @@ -918,6 +964,7 @@ mad_fixed_t III_requantize(unsigned int value, signed int exp) return frac ? mad_f_mul(requantized, root_table[3 + frac]) : requantized; } +#endif /* we must take care that sz >= bits and sz < sizeof(long) lest bits == 0 */ # define MASK(cache, sz, bits) \ @@ -2054,27 +2101,42 @@ void imdct36(mad_fixed_t const X[18], mad_fixed_t x[36]) } # endif + +#ifdef FPM_AVR32 +# undef mad_f_mul +# define mad_f_mul(x, y) __builtin_mulsatrndwh_w(x, y) +#endif + /* * NAME: III_imdct_l() * DESCRIPTION: perform IMDCT and windowing for long blocks */ static -void III_imdct_l(mad_fixed_t const X[18], mad_fixed_t z[36], +void III_imdct_l(mad_fixed_t /*const*/ X[18], mad_fixed_t z[36], unsigned int block_type) { unsigned int i; + mad_fixed_t *z_ptr; + mad_coeff_t *w_ptr; /* IMDCT */ +#ifdef FPM_AVR32 + imdct36_avr32(X, z); +#else imdct36(X, z); +#endif /* windowing */ + z_ptr = &z[0]; + w_ptr = &window_l[0]; + switch (block_type) { case 0: /* normal window */ # if defined(ASO_INTERLEAVE1) { - register mad_fixed_t tmp1, tmp2; + register mad_coeff_t tmp1, tmp2; tmp1 = window_l[0]; tmp2 = window_l[1]; @@ -2091,15 +2153,16 @@ void III_imdct_l(mad_fixed_t const X[18], mad_fixed_t z[36], } # elif defined(ASO_INTERLEAVE2) { - register mad_fixed_t tmp1, tmp2; + register mad_fixed_t tmp1; + register mad_coeff_t tmp2; - tmp1 = z[0]; - tmp2 = window_l[0]; + tmp1 = *z_ptr; + tmp2 = *w_ptr++; for (i = 0; i < 35; ++i) { - z[i] = mad_f_mul(tmp1, tmp2); - tmp1 = z[i + 1]; - tmp2 = window_l[i + 1]; + *z_ptr++ = mad_f_mul(tmp1, tmp2); + tmp1 = *z_ptr; + tmp2 = *w_ptr++; } z[35] = mad_f_mul(tmp1, tmp2); @@ -2118,23 +2181,28 @@ void III_imdct_l(mad_fixed_t const X[18], mad_fixed_t z[36], case 1: /* start block */ for (i = 0; i < 18; i += 3) { - z[i + 0] = mad_f_mul(z[i + 0], window_l[i + 0]); - z[i + 1] = mad_f_mul(z[i + 1], window_l[i + 1]); - z[i + 2] = mad_f_mul(z[i + 2], window_l[i + 2]); + *(z_ptr++) = mad_f_mul(*z_ptr, *w_ptr++); + *(z_ptr++) = mad_f_mul(*z_ptr, *w_ptr++); + *(z_ptr++) = mad_f_mul(*z_ptr, *w_ptr++); } + z_ptr += 6; + w_ptr = &window_s[6]; /* (i = 18; i < 24; ++i) z[i] unchanged */ - for (i = 24; i < 30; ++i) z[i] = mad_f_mul(z[i], window_s[i - 18]); - for (i = 30; i < 36; ++i) z[i] = 0; + for (i = 24; i < 30; ++i) *z_ptr++ = mad_f_mul(*z_ptr, *w_ptr++); + for (i = 30; i < 36; ++i) *z_ptr++ = 0; break; case 3: /* stop block */ - for (i = 0; i < 6; ++i) z[i] = 0; - for (i = 6; i < 12; ++i) z[i] = mad_f_mul(z[i], window_s[i - 6]); + w_ptr = &window_s[0]; + for (i = 0; i < 6; ++i) *z_ptr++ = 0; + for (i = 6; i < 12; ++i) *z_ptr++ = mad_f_mul(*z_ptr, *w_ptr++); /* (i = 12; i < 18; ++i) z[i] unchanged */ + w_ptr = &window_l[18]; + z_ptr += 6; for (i = 18; i < 36; i += 3) { - z[i + 0] = mad_f_mul(z[i + 0], window_l[i + 0]); - z[i + 1] = mad_f_mul(z[i + 1], window_l[i + 1]); - z[i + 2] = mad_f_mul(z[i + 2], window_l[i + 2]); + *z_ptr++ = mad_f_mul(*z_ptr, *w_ptr++ ); + *z_ptr++ = mad_f_mul(*z_ptr, *w_ptr++); + *z_ptr++ = mad_f_mul(*z_ptr, *w_ptr++); } break; } @@ -2146,10 +2214,10 @@ void III_imdct_l(mad_fixed_t const X[18], mad_fixed_t z[36], * DESCRIPTION: perform IMDCT and windowing for short blocks */ static -void III_imdct_s(mad_fixed_t const X[18], mad_fixed_t z[36]) +void III_imdct_s(mad_fixed_t /*const*/ X[18], mad_fixed_t z[36]) { mad_fixed_t y[36], *yptr; - mad_fixed_t const *wptr; + mad_coeff_t const *wptr; int w, i; register mad_fixed64hi_t hi; register mad_fixed64lo_t lo; @@ -2159,11 +2227,56 @@ void III_imdct_s(mad_fixed_t const X[18], mad_fixed_t z[36]) yptr = &y[0]; for (w = 0; w < 3; ++w) { - register mad_fixed_t const (*s)[6]; + register mad_coeff_t const (*s)[6]; s = imdct_s; for (i = 0; i < 3; ++i) { +#ifdef FPM_AVR32 + register long long int acc, tmp1, tmp2, tmp3, tmp4; + asm volatile ("ld.d\t%0, %5++\n" + "ld.d\t%1, %6[0]\n" + "ld.d\t%2, %6[2*4]\n" + "ld.d\t%3, %6[4*4]\n" + "mulwh.d\t%4, %m1, %m0:t\n" + "macwh.d\t%4, %1, %m0:b\n" + "ld.w\t%m0, %5++\n" + "macwh.d\t%4, %m2, %0:t\n" + "macwh.d\t%4, %2, %0:b\n" + "macwh.d\t%4, %m3, %m0:t\n" + "macwh.d\t%4, %3, %m0:b\n" + "ld.d\t%0, %5++\n" + "rol\t%4\n" + "rol\t%m4\n" + : "=&r"(tmp1), "=&r"(tmp2), "=&r"(tmp3), "=&r"(tmp4), + "=&r"(acc), "+r"(s) + : "r"(X)); + + asm volatile ("st.w\t%1[0], %m0\n" + "neg\t%m0\n" + "st.w\t%2[5*4], %m0\n" + : "+r"(acc) + : "r"(&yptr[i]), "r"(&yptr[-i])); + + asm volatile ("mulwh.d\t%4, %m1, %m0:t\n" + "macwh.d\t%4, %1, %m0:b\n" + "ld.w\t%m0, %5++\n" + "macwh.d\t%4, %m2, %0:t\n" + "macwh.d\t%4, %2, %0:b\n" + "macwh.d\t%4, %m3, %m0:t\n" + "macwh.d\t%4, %3, %m0:b\n" + "rol\t%4\n" + "rol\t%m4\n" + : "+r"(tmp1), "+r"(tmp2), "+r"(tmp3), "+r"(tmp4), + "=&r"(acc), "+r"(s) + : "r"(X)); + + asm volatile ( "st.w\t%1[6*4], %m0\n" + "st.w\t%2[11*4], %m0\n" + :: "r"(acc), "r"(&yptr[i]), "r"(&yptr[-i])); + + +#else MAD_F_ML0(hi, lo, X[0], (*s)[0]); MAD_F_MLA(hi, lo, X[1], (*s)[1]); MAD_F_MLA(hi, lo, X[2], (*s)[2]); @@ -2187,6 +2300,7 @@ void III_imdct_s(mad_fixed_t const X[18], mad_fixed_t z[36]) yptr[11 - i] = yptr[i + 6]; ++s; +#endif } yptr += 12; @@ -2198,6 +2312,196 @@ void III_imdct_s(mad_fixed_t const X[18], mad_fixed_t z[36]) yptr = &y[0]; wptr = &window_s[0]; +#ifdef FPM_AVR32 + /* z[0] = 0; + z[1] = 0; + z[2] = 0; + z[3] = 0; + z[4] = 0; + z[5] = 0; + z[30] = 0; + z[31] = 0; + z[32] = 0; + z[33] = 0; + z[34] = 0; + z[35] = 0; + */ + { + register long long int tmp, tmp2, tmp3, w0123, w4567, w891011; + asm volatile ("mov\t%m0, 0\n" + "mov\t%0, %m0\n" + "st.d\t%1[0], %0\n" + "st.d\t%1[2*4], %0\n" + "st.d\t%1[4*4], %0\n" + "st.d\t%1[30*4], %0\n" + "st.d\t%1[32*4], %0\n" + "st.d\t%1[34*4], %0\n" + : "=&r"(tmp) : "r"(z)); + + + + /* + z[6] = mad_f_mul(yptr [0], wptr[0]); + z[7] = mad_f_mul(yptr [1], wptr[1]); + z[8] = mad_f_mul(yptr [2], wptr[2]); + z[9] = mad_f_mul(yptr [3], wptr[3]); + z[10] = mad_f_mul(yptr[4], wptr[4]); + z[11] = mad_f_mul(yptr[5], wptr[5]); + z[24] = mad_f_mul(yptr [30], wptr[6]); + z[25] = mad_f_mul(yptr [31], wptr[7]); + z[26] = mad_f_mul(yptr [32], wptr[8]); + z[27] = mad_f_mul(yptr [33], wptr[9]); + z[28] = mad_f_mul(yptr[34], wptr[10]); + z[29] = mad_f_mul(yptr[35], wptr[11]); + */ + + + asm volatile ("ld.d\t%0, %5[0*4]\n" + "ld.d\t%3, %6[0*4]\n" + "ld.d\t%1, %5[2*4]\n" + "ld.d\t%2, %5[4*4]\n" + "mulsatrndwh.w\t%m3, %m3, %m0:t\n" + "mulsatrndwh.w\t%3, %3, %m0:b\n" + "ld.d\t%4, %6[2*4]\n" + "st.d\t%7[6*4], %3\n" + + "mulsatrndwh.w\t%m4, %m4, %0:t\n" + "mulsatrndwh.w\t%4, %4, %0:b\n" + "ld.d\t%3, %6[4*4]\n" + "st.d\t%7[8*4], %4\n" + + "mulsatrndwh.w\t%m3, %m3, %m1:t\n" + "mulsatrndwh.w\t%3, %3, %m1:b\n" + "ld.d\t%4, %6[30*4]\n" + "st.d\t%7[10*4], %3\n" + + "mulsatrndwh.w\t%m4, %m4, %1:t\n" + "mulsatrndwh.w\t%4, %4, %1:b\n" + "ld.d\t%3, %6[32*4]\n" + "st.d\t%7[24*4], %4\n" + + "mulsatrndwh.w\t%m3, %m3, %m2:t\n" + "mulsatrndwh.w\t%3, %3, %m2:b\n" + "ld.d\t%4, %6[34*4]\n" + "st.d\t%7[26*4], %3\n" + + "mulsatrndwh.w\t%m4, %m4, %2:t\n" + "mulsatrndwh.w\t%4, %4, %2:b\n" + "st.d\t%7[28*4], %4\n" + + : "=&r"(w0123), "=&r"(w4567), "=&r"(w891011), "=&r"(tmp), "=&r"(tmp2) + : "r"(wptr), "r"(yptr), "r"(z)); + /* + MAD_F_ML0(hi, lo, yptr[6], wptr[6]); + MAD_F_MLA(hi, lo, yptr[12], wptr[0]); + z[12] = MAD_F_MLZ(hi, lo); + MAD_F_ML0(hi, lo, yptr[7], wptr[7]); + MAD_F_MLA(hi, lo, yptr[13], wptr[1]); + z[13] = MAD_F_MLZ(hi, lo); + MAD_F_ML0(hi, lo, yptr[8], wptr[8]); + MAD_F_MLA(hi, lo, yptr[14], wptr[2]); + z[14] = MAD_F_MLZ(hi, lo); + MAD_F_ML0(hi, lo, yptr[9], wptr[9]); + MAD_F_MLA(hi, lo, yptr[15], wptr[3]); + z[15] = MAD_F_MLZ(hi, lo); + MAD_F_ML0(hi, lo, yptr[10], wptr[10]); + MAD_F_MLA(hi, lo, yptr[16], wptr[4]); + z[16] = MAD_F_MLZ(hi, lo); + MAD_F_ML0(hi, lo, yptr[11], wptr[11]); + MAD_F_MLA(hi, lo, yptr[17], wptr[5]); + z[17] = MAD_F_MLZ(hi, lo); + + MAD_F_ML0(hi, lo, yptr[18], wptr[6]); + MAD_F_MLA(hi, lo, yptr[24], wptr[0]); + z[18] = MAD_F_MLZ(hi, lo); + MAD_F_ML0(hi, lo, yptr[19], wptr[7]); + MAD_F_MLA(hi, lo, yptr[25], wptr[1]); + z[19] = MAD_F_MLZ(hi, lo); + MAD_F_ML0(hi, lo, yptr[20], wptr[8]); + MAD_F_MLA(hi, lo, yptr[26], wptr[2]); + z[20] = MAD_F_MLZ(hi, lo); + MAD_F_ML0(hi, lo, yptr[21], wptr[9]); + MAD_F_MLA(hi, lo, yptr[27], wptr[3]); + z[21] = MAD_F_MLZ(hi, lo); + MAD_F_ML0(hi, lo, yptr[22], wptr[10]); + MAD_F_MLA(hi, lo, yptr[28], wptr[4]); + z[22] = MAD_F_MLZ(hi, lo); + MAD_F_ML0(hi, lo, yptr[23], wptr[11]); + MAD_F_MLA(hi, lo, yptr[29], wptr[5]); + z[23] = MAD_F_MLZ(hi, lo);*/ + + + asm volatile ("ld.d\t%0, %3[6*4]\n" + "ld.d\t%1, %3[12*4]\n" + "mulwh.d\t%2, %m0, %5:t\n" + "macwh.d\t%2, %m1, %m4:t\n" + "mulwh.d\t%0, %0, %5:b\n" + "macwh.d\t%0, %1, %m4:b\n" + "lsl\t%m2, 1\n" + "lsl\t%2, %m0, 1\n" + "st.d\t%6[12*4], %2\n" + + "ld.d\t%0, %3[18*4]\n" + "ld.d\t%1, %3[24*4]\n" + "mulwh.d\t%2, %m0, %5:t\n" + "macwh.d\t%2, %m1, %m4:t\n" + "mulwh.d\t%0, %0, %5:b\n" + "macwh.d\t%0, %1, %m4:b\n" + "lsl\t%m2, 1\n" + "lsl\t%2, %m0, 1\n" + "st.d\t%6[18*4], %2\n" + + : "=&r"(tmp), "=&r"(tmp2), "=&r"(tmp3) + : "r"(yptr), "r"(w0123), "r"(w4567), "r"(z)); + + asm volatile ("ld.d\t%0, %3[8*4]\n" + "ld.d\t%1, %3[14*4]\n" + "mulwh.d\t%2, %m0, %m5:t\n" + "macwh.d\t%2, %m1, %4:t\n" + "mulwh.d\t%0, %0, %m5:b\n" + "macwh.d\t%0, %1, %4:b\n" + "lsl\t%m2, 1\n" + "lsl\t%2, %m0, 1\n" + "st.d\t%6[14*4], %2\n" + + "ld.d\t%0, %3[20*4]\n" + "ld.d\t%1, %3[26*4]\n" + "mulwh.d\t%2, %m0, %m5:t\n" + "macwh.d\t%2, %m1, %4:t\n" + "mulwh.d\t%0, %0, %m5:b\n" + "macwh.d\t%0, %1, %4:b\n" + "lsl\t%m2, 1\n" + "lsl\t%2, %m0, 1\n" + "st.d\t%6[20*4], %2\n" + + : "=&r"(tmp), "=&r"(tmp2), "=&r"(tmp3) + : "r"(yptr), "r"(w0123), "r"(w891011), "r"(z)); + + asm volatile ("ld.d\t%0, %3[10*4]\n" + "ld.d\t%1, %3[16*4]\n" + "mulwh.d\t%2, %m0, %5:t\n" + "macwh.d\t%2, %m1, %m4:t\n" + "mulwh.d\t%0, %0, %5:b\n" + "macwh.d\t%0, %1, %m4:b\n" + "lsl\t%m2, 1\n" + "lsl\t%2, %m0, 1\n" + "st.d\t%6[16*4], %2\n" + + "ld.d\t%0, %3[22*4]\n" + "ld.d\t%1, %3[28*4]\n" + "mulwh.d\t%2, %m0, %5:t\n" + "macwh.d\t%2, %m1, %m4:t\n" + "mulwh.d\t%0, %0, %5:b\n" + "macwh.d\t%0, %1, %m4:b\n" + "lsl\t%m2, 1\n" + "lsl\t%2, %m0, 1\n" + "st.d\t%6[22*4], %2\n" + + : "=&r"(tmp), "=&r"(tmp2), "=&r"(tmp3) + : "r"(yptr), "r"(w4567), "r"(w891011), "r"(z)); + + } +#else for (i = 0; i < 6; ++i) { z[i + 0] = 0; z[i + 6] = mad_f_mul(yptr[ 0 + 0], wptr[0]); @@ -2218,8 +2522,15 @@ void III_imdct_s(mad_fixed_t const X[18], mad_fixed_t z[36]) ++yptr; ++wptr; } +#endif } +#ifdef FPM_AVR32 +# undef mad_f_mul +# define mad_f_mul(x, y) ((((x) + (1L << 11)) >> 12) * \ + (((y) + (1L << 15)) >> 16)) +#endif + /* * NAME: III_overlap() * DESCRIPTION: perform overlap-add of windowed IMDCT outputs diff --git a/synth.c b/synth.c index 1d28d43..f42d49b 100644 --- a/synth.c +++ b/synth.c @@ -29,20 +29,6 @@ # include "frame.h" # include "synth.h" -/* - * NAME: synth->init() - * DESCRIPTION: initialize synth struct - */ -void mad_synth_init(struct mad_synth *synth) -{ - mad_synth_mute(synth); - - synth->phase = 0; - - synth->pcm.samplerate = 0; - synth->pcm.channels = 0; - synth->pcm.length = 0; -} /* * NAME: synth->mute() @@ -88,6 +74,10 @@ void mad_synth_mute(struct mad_synth *synth) /* FPM_DEFAULT without OPT_SSO will actually lose accuracy and performance */ +# if defined(FPM_AVR32) +# define OPT_SSO +# endif + # if defined(FPM_DEFAULT) && !defined(OPT_SSO) # define OPT_SSO # endif @@ -522,9 +512,15 @@ void dct32(mad_fixed_t const in[32], unsigned int slot, # endif # define ML0(hi, lo, x, y) ((lo) = (x) * (y)) # define MLA(hi, lo, x, y) ((lo) += (x) * (y)) -# define MLN(hi, lo) ((lo) = -(lo)) -# define MLZ(hi, lo) ((void) (hi), (mad_fixed_t) (lo)) -# define SHIFT(x) ((x) >> 2) +# if defined(FPM_AVR32) +# define MLN(hi, lo) MAD_F_MLN((hi), (lo)) +# define MLZ(hi, lo) (hi) +# define SHIFT(x) ((x) << 2) +# else +# define MLN(hi, lo) ((lo) = -(lo)) +# define MLZ(hi, lo) ((void) (hi), (mad_fixed_t) (lo)) +# define SHIFT(x) ((x) >> 2) +# endif # define PRESHIFT(x) ((MAD_F(x) + (1L << 13)) >> 14) # else # define ML0(hi, lo, x, y) MAD_F_ML0((hi), (lo), (x), (y)) @@ -541,11 +537,54 @@ void dct32(mad_fixed_t const in[32], unsigned int slot, # endif # endif +/* + * NAME: synth->init() + * DESCRIPTION: initialize synth struct + */ + +#ifdef FPM_AVR32 +short Dmod[17][33]; +#endif + static +#ifdef FPM_AVR32 +short const D[17][32] = { +#else mad_fixed_t const D[17][32] = { +#endif # include "D.dat" }; +void mad_synth_init(struct mad_synth *synth) +{ + + mad_synth_mute(synth); + + synth->phase = 0; + + synth->pcm.samplerate = 0; + synth->pcm.channels = 0; + synth->pcm.length = 0; + +#ifdef FPM_AVR32 + { + int i, j; + for ( i = 0; i < 17; i++ ){ + for ( j = 0; j < 32; j++ ){ + if ( j & 1 ){ + Dmod[i][17 + (j >> 1)]= D[i][j]; + } else { + Dmod[i][(j >> 1)]= D[i][j]; + } + } + + Dmod[i][16]= Dmod[i][16+8]; + } + } +#endif + +} + # if defined(ASO_SYNTH) void synth_full(struct mad_synth *, struct mad_frame const *, unsigned int, unsigned int); @@ -560,9 +599,13 @@ void synth_full(struct mad_synth *synth, struct mad_frame const *frame, { unsigned int phase, ch, s, sb, pe, po; mad_fixed_t *pcm1, *pcm2, (*filter)[2][2][16][8]; - mad_fixed_t const (*sbsample)[36][32]; + mad_fixed_t /*const*/ (*sbsample)[36][32]; register mad_fixed_t (*fe)[8], (*fx)[8], (*fo)[8]; +#ifdef FPM_AVR32 + register short const (*Dptr)[32], *ptr; +#else register mad_fixed_t const (*Dptr)[32], *ptr; +#endif register mad_fixed64hi_t hi; register mad_fixed64lo_t lo; @@ -573,6 +616,20 @@ void synth_full(struct mad_synth *synth, struct mad_frame const *frame, pcm1 = synth->pcm.samples[ch]; for (s = 0; s < ns; ++s) { +# ifdef FPM_AVR32 +/* + int i; + for ( i = 0; i < 32; i++ ){ + (*sbsample)[s][i] = ((*sbsample)[s][i] + (1 << 13)) & 0xFFFFC000; + } +*/ + dct32_avr32((*sbsample)[s], phase >> 1, + (*filter)[0][phase & 1], (*filter)[1][phase & 1]); + /* printf("dct32: %d\n", GET_CYCLES);*/ + pcm1 = synth_avr32(phase, (mad_fixed_t *)filter, \ + pcm1, (short *)&Dmod[0]); + /* printf("synth_window: %d\n", GET_CYCLES);*/ +# else dct32((*sbsample)[s], phase >> 1, (*filter)[0][phase & 1], (*filter)[1][phase & 1]); @@ -679,6 +736,7 @@ void synth_full(struct mad_synth *synth, struct mad_frame const *frame, MLA(hi, lo, (*fo)[7], ptr[ 2]); *pcm1 = SHIFT(-MLZ(hi, lo)); +# endif pcm1 += 16; phase = (phase + 1) % 16; diff --git a/synth_avr32.S b/synth_avr32.S new file mode 100644 index 0000000..701077b --- /dev/null +++ b/synth_avr32.S @@ -0,0 +1,394 @@ +/* + Optimized function for speeding up synthesis filter + in MPEG Audio Decoding. + Copyright 2003-2006 Atmel Corporation. + + Written by Ronny Pedersen and Lars Even Almås, Atmel Norway + + 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, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + + +/* ***************** + Defining macros + ***************** */ + + .macro window_1 f, ptr, acc, ptr_offset, mul, tmp1_lo, tmp1_hi, tmp2_lo, tmp2_hi, tmp3_lo, tmp3_hi + ld.d \tmp1_lo, \f[0*4] /* tmp1 = { f[0], f[1] } */ + ld.w \tmp2_lo, \ptr[0*2+\ptr_offset*2] /* tmp2_lo = { ptr[0], ptr[1] }*/ + ld.d \tmp3_lo, \f[6*4] /* tmp3 = { f[6], f[7] } */ + ld.w \tmp2_hi, \ptr[6*2+\ptr_offset*2] /* tmp2_hi = { ptr[6], ptr[7] }*/ + .if \mul + mulwh.d \acc, \tmp1_hi, \tmp2_lo:t /* f[0] * ptr[0]*/ + .else + macwh.d \acc, \tmp1_hi, \tmp2_lo:t /* f[0] * ptr[0]*/ + .endif + macwh.d \acc, \tmp3_lo, \tmp2_lo:b /* f[7] * ptr[1]*/ + ld.w \tmp2_lo, \ptr[2*2+\ptr_offset*2] /* tmp2_lo = { ptr[2], ptr[3] }*/ + macwh.d \acc, \tmp1_lo, \tmp2_hi:b /* f[1] * ptr[7]*/ + ld.d \tmp1_lo, \f[2*4] /* tmp1 = { f[2], f[3] } */ + + macwh.d \acc, \tmp3_hi, \tmp2_lo:t /* f[6] * ptr[2]*/ + macwh.d \acc, \tmp1_hi, \tmp2_hi:t /* f[2] * ptr[6]*/ + ld.d \tmp3_lo, \f[4*4] /* tmp3 = { f[4], f[5] } */ + ld.w \tmp2_hi, \ptr[4*2+\ptr_offset*2] /* tmp2_hi = { ptr[4], ptr[5] }*/ + macwh.d \acc, \tmp3_lo, \tmp2_lo:b /* f[5] * ptr[3]*/ + + macwh.d \acc, \tmp1_lo, \tmp2_hi:b /* f[3] * ptr[5]*/ + macwh.d \acc, \tmp3_hi, \tmp2_hi:t /* f[4] * ptr[4]*/ + .endm + + .macro window_2 f, ptr, acc, ptr_offset, mul, tmp1_lo, tmp1_hi, tmp2_lo, tmp2_hi, tmp3_lo, tmp3_hi + ld.d \tmp1_lo, \f[0*4] /* tmp1 = { f[0], f[1] } */ + ld.w \tmp2_lo, \ptr[7*2+\ptr_offset*2] /* tmp2_lo = { ptr[7], ptr[8] }*/ + ld.d \tmp3_lo, \f[2*4] /* tmp3 = { f[2], f[3] } */ + ld.w \tmp2_hi, \ptr[9*2+\ptr_offset*2] /* tmp2_hi = { ptr[9], ptr[10] }*/ + .if \mul + mulwh.d \acc, \tmp1_hi, \tmp2_lo:t /* f[0] * ptr[7]*/ + .else + macwh.d \acc, \tmp1_hi, \tmp2_lo:t /* f[0] * ptr[7]*/ + .endif + macwh.d \acc, \tmp1_lo, \tmp2_lo:b /* f[1] * ptr[8]*/ + + ld.d \tmp1_lo, \f[4*4] /* tmp1 = { f[4], f[5] } */ + ld.w \tmp2_lo, \ptr[11*2+\ptr_offset*2] /* tmp2_lo = { ptr[11], ptr[12] }*/ + + macwh.d \acc, \tmp3_hi, \tmp2_hi:t /* f[2] * ptr[9]*/ + macwh.d \acc, \tmp3_lo, \tmp2_hi:b /* f[3] * ptr[10]*/ + + ld.d \tmp3_lo, \f[6*4] /* tmp3 = { f[6], f[7] } */ + ld.w \tmp2_hi, \ptr[13*2+\ptr_offset*2] /* tmp2_hi = { ptr[13], ptr[14] }*/ + + macwh.d \acc, \tmp1_hi, \tmp2_lo:t /* f[4] * ptr[11]*/ + macwh.d \acc, \tmp1_lo, \tmp2_lo:b /* f[5] * ptr[12]*/ + macwh.d \acc, \tmp3_hi, \tmp2_hi:t /* f[6] * ptr[13]*/ + macwh.d \acc, \tmp3_lo, \tmp2_hi:b /* f[7] * ptr[14]*/ + .endm + + .macro scale res, d_lo, d_hi + lsl \d_hi, 2 + .endm + +/* ********************** + Starting main function + ********************** */ + +/* Function synth_avr32 is called from synth.c with arguments: + phase, filter, *pcm1, &D[0] */ + + .global synth_avr32 +synth_avr32: + pushm r0-r7, lr + sub sp, 8 + + /* R12 = phase, R11 = filter, R10 = pcm1, r9 = D*/ + bld r12, 0 + brcc synth_even + + /* Filter for odd phases */ + + /* fe = &(*filter)[0][1][0]; + fx = &(*filter)[0][0][0]; + fo = &(*filter)[1][0][0]; */ + sub lr /*fe*/, r11, -16*8*4 + sub r8 /*fo*/, r11, -16*8*4*2 + + /* pe = phase >> 1; */ + lsr r12, 1 + stdsp sp[4], r12 + /* ptr = (short const *)Dmod + pe; */ + add r12, r9, r12 << 1 + + /* ML0(hi, lo, (*fx)[0], ptr[0 + 17]); + MLA(hi, lo, (*fx)[1], ptr[7 + 17]); + MLA(hi, lo, (*fx)[2], ptr[6 + 17]); + MLA(hi, lo, (*fx)[3], ptr[5 + 17]); + MLA(hi, lo, (*fx)[4], ptr[4 + 17]); + MLA(hi, lo, (*fx)[5], ptr[3 + 17]); + MLA(hi, lo, (*fx)[6], ptr[2 + 17]); + MLA(hi, lo, (*fx)[7], ptr[1 + 17]); */ + window_1 r11/*fx*/,r12/*ptr*/,r0/*acc*/,17/*off*/,1/*mul*/,r2,r3,r4,r5,r6,r7 + + /* MLN(hi, lo); */ + neg r0 + acr r1 + neg r1 + + /* MLA(hi, lo, (*fe)[0], ptr[0]); + MLA(hi, lo, (*fe)[1], ptr[7]); + MLA(hi, lo, (*fe)[2], ptr[6]); + MLA(hi, lo, (*fe)[3], ptr[5]); + MLA(hi, lo, (*fe)[4], ptr[4]); + MLA(hi, lo, (*fe)[5], ptr[3]); + MLA(hi, lo, (*fe)[6], ptr[2]); + MLA(hi, lo, (*fe)[7], ptr[1]); */ + window_1 lr/*fe*/,r12/*ptr*/,r0/*acc*/,0/*off*/,0/*mac*/,r2,r3,r4,r5,r6,r7 + + /* *pcm1++ = SHIFT(MLZ(hi, lo)); + + pcm2 = pcm1 + 31; */ + scale r1, r0, r1 + st.w r10/*pcm_1*/++, r1 + sub r11/*pcm2*/, r10, -4*31 + + /* for (sb = 1; sb < 16; ++sb) { */ + mov r2, 15 + stdsp sp[0], r2 +odd_loop: + /* ++fe; + ptr += 33; */ + sub lr /*fe*/, -8*4 + sub r12, -33*2 + + /* ML0(hi, lo, (*fo)[0], ptr[0 + 17]); + MLA(hi, lo, (*fo)[1], ptr[7 + 17]); + MLA(hi, lo, (*fo)[2], ptr[6 + 17]); + MLA(hi, lo, (*fo)[3], ptr[5 + 17]); + MLA(hi, lo, (*fo)[4], ptr[4 + 17]); + MLA(hi, lo, (*fo)[5], ptr[3 + 17]); + MLA(hi, lo, (*fo)[6], ptr[2 + 17]); + MLA(hi, lo, (*fo)[7], ptr[1 + 17]); */ + window_1 r8/*fo*/,r12/*ptr*/,r0/*acc*/,17/*off*/,1/*mul*/,r2,r3,r4,r5,r6,r7 + /* MLN(hi, lo); */ + + neg r0 + acr r1 + neg r1 + + /* MLA(hi, lo, (*fe)[7], ptr[1]); + MLA(hi, lo, (*fe)[6], ptr[2]); + MLA(hi, lo, (*fe)[5], ptr[3]); + MLA(hi, lo, (*fe)[4], ptr[4]); + MLA(hi, lo, (*fe)[3], ptr[5]); + MLA(hi, lo, (*fe)[2], ptr[6]); + MLA(hi, lo, (*fe)[1], ptr[7]); + MLA(hi, lo, (*fe)[0], ptr[0]); */ + window_1 lr/*fe*/,r12/*ptr*/,r0/*acc*/,0/*off*/,0/*mac*/,r2,r3,r4,r5,r6,r7 + + /* ptr -= 2*pe; */ + lddsp r2, sp[4] + + /* *pcm1++ = SHIFT(MLZ(hi, lo)); */ + + scale r1, r0, r1 + sub r12/*ptr*/, r12, r2/*pe*/<< 2 + st.w r10/*pcm_1*/++, r1 + + + /* ML0(hi, lo, (*fe)[0], ptr[7 + 17]); + MLA(hi, lo, (*fe)[1], ptr[8 + 17]); + MLA(hi, lo, (*fe)[2], ptr[9 + 17]); + MLA(hi, lo, (*fe)[3], ptr[10 + 17]); + MLA(hi, lo, (*fe)[4], ptr[11 + 17]); + MLA(hi, lo, (*fe)[5], ptr[12 + 17]); + MLA(hi, lo, (*fe)[6], ptr[13 + 17]); + MLA(hi, lo, (*fe)[7], ptr[14 + 17]); */ + window_2 lr/*fe*/,r12/*ptr*/,r0/*acc*/,17/*off*/,1/*mul*/,r2,r3,r4,r5,r6,r7 + /* MLA(hi, lo, (*fo)[7], ptr[14]); + MLA(hi, lo, (*fo)[6], ptr[13]); + MLA(hi, lo, (*fo)[5], ptr[12]); + MLA(hi, lo, (*fo)[4], ptr[11]); + MLA(hi, lo, (*fo)[3], ptr[10]); + MLA(hi, lo, (*fo)[2], ptr[9]); + MLA(hi, lo, (*fo)[1], ptr[8]); + MLA(hi, lo, (*fo)[0], ptr[7]); */ + window_2 r8/*fo*/,r12/*ptr*/,r0/*acc*/,0/*off*/,0/*mac*/,r2,r3,r4,r5,r6,r7 + + + /* *pcm2-- = SHIFT(MLZ(hi, lo)); */ + lddsp r3, sp[4] + lddsp r2, sp[0] + scale r1, r0, r1 + st.w --r11/*pcm_2*/, r1 + + /* ptr += 2*pe; */ + add r12/*ptr*/, r12, r3/*pe*/<< 2 + + /* ++fo; + } */ + sub r8/*fo*/, -8*4 + + sub r2, 1 + stdsp sp[0], r2 + brne odd_loop + + /* ptr += 33; */ + sub r12/*ptr*/, -33*2 + + /* ML0(hi, lo, (*fo)[0], ptr[0 + 17]); + MLA(hi, lo, (*fo)[1], ptr[7 + 17]); + MLA(hi, lo, (*fo)[2], ptr[6 + 17]); + MLA(hi, lo, (*fo)[3], ptr[5 + 17]); + MLA(hi, lo, (*fo)[4], ptr[4 + 17]); + MLA(hi, lo, (*fo)[5], ptr[3 + 17]); + MLA(hi, lo, (*fo)[6], ptr[2 + 17]); + MLA(hi, lo, (*fo)[7], ptr[1 + 17]); */ + window_1 r8/*fo*/,r12/*ptr*/,r0/*acc*/,17/*off*/,1/*mul*/,r2,r3,r4,r5,r6,r7 + + rjmp synth_end +synth_even: + /* Filter for even phases */ + + /* fe = &(*filter)[0][0][0]; + fx = &(*filter)[0][1][0]; + fo = &(*filter)[1][1][0]; */ + sub lr /*fx*/, r11, -16*8*4 + sub r8 /*fo*/, r11, -(16*8*4*2 + 16*8*4) + + /* po = ((phase - 1) & 0xF) >> 1; */ + sub r12, 1 + andl r12, 0xe, COH + stdsp sp[4], r12 + /* ptr = (short const *)Dmod + po; */ + add r12, r9, r12 + + /* ML0(hi, lo, (*fx)[0], ptr[0 + 17]); + MLA(hi, lo, (*fx)[1], ptr[7 + 17]); + MLA(hi, lo, (*fx)[2], ptr[6 + 17]); + MLA(hi, lo, (*fx)[3], ptr[5 + 17]); + MLA(hi, lo, (*fx)[4], ptr[4 + 17]); + MLA(hi, lo, (*fx)[5], ptr[3 + 17]); + MLA(hi, lo, (*fx)[6], ptr[2 + 17]); + MLA(hi, lo, (*fx)[7], ptr[1 + 17]); */ + window_1 lr/*fx*/,r12/*ptr*/,r0/*acc*/,17/*off*/,1/*mul*/,r2,r3,r4,r5,r6,r7 + + /* MLN(hi, lo); */ + neg r0 + acr r1 + neg r1 + + /* MLA(hi, lo, (*fe)[0], ptr[0 + 1]); + MLA(hi, lo, (*fe)[1], ptr[7 + 1]); + MLA(hi, lo, (*fe)[2], ptr[6 + 1]); + MLA(hi, lo, (*fe)[3], ptr[5 + 1]); + MLA(hi, lo, (*fe)[4], ptr[4 + 1]); + MLA(hi, lo, (*fe)[5], ptr[3 + 1]); + MLA(hi, lo, (*fe)[6], ptr[2 + 1]); + MLA(hi, lo, (*fe)[7], ptr[1 + 1]); */ + window_1 r11/*fe*/,r12/*ptr*/,r0/*acc*/,1/*off*/,0/*mac*/,r2,r3,r4,r5,r6,r7 + + /* *pcm1++ = SHIFT(MLZ(hi, lo)); + + pcm2 = pcm1 + 31; */ + scale r1, r0, r1 + st.w r10/*pcm_1*/++, r1 + sub lr/*pcm2*/, r10, -4*31 + + /* for (sb = 1; sb < 16; ++sb) { */ + mov r2, 15 + stdsp sp[0], r2 +even_loop: + /* ++fe; + ptr += 33; */ + sub r11 /*fe*/, -8*4 + sub r12, -33*2 + + /* ML0(hi, lo, (*fo)[0], ptr[0 + 17]); + MLA(hi, lo, (*fo)[1], ptr[7 + 17]); + MLA(hi, lo, (*fo)[2], ptr[6 + 17]); + MLA(hi, lo, (*fo)[3], ptr[5 + 17]); + MLA(hi, lo, (*fo)[4], ptr[4 + 17]); + MLA(hi, lo, (*fo)[5], ptr[3 + 17]); + MLA(hi, lo, (*fo)[6], ptr[2 + 17]); + MLA(hi, lo, (*fo)[7], ptr[1 + 17]); */ + window_1 r8/*fo*/,r12/*ptr*/,r0/*acc*/,17/*off*/,1/*mul*/,r2,r3,r4,r5,r6,r7 + /* MLN(hi, lo); */ + neg r0 + acr r1 + neg r1 + + /* MLA(hi, lo, (*fe)[7], ptr[1 + 1]); + MLA(hi, lo, (*fe)[6], ptr[2 + 1]); + MLA(hi, lo, (*fe)[5], ptr[3 + 1]); + MLA(hi, lo, (*fe)[4], ptr[4 + 1]); + MLA(hi, lo, (*fe)[3], ptr[5 + 1]); + MLA(hi, lo, (*fe)[2], ptr[6 + 1]); + MLA(hi, lo, (*fe)[1], ptr[7 + 1]); + MLA(hi, lo, (*fe)[0], ptr[0 + 1]); */ + window_1 r11/*fe*/,r12/*ptr*/,r0/*acc*/,1/*off*/,0/*mac*/,r2,r3,r4,r5,r6,r7 + + /* *pcm1++ = SHIFT(MLZ(hi, lo)); */ + lddsp r2, sp[4] + scale r1, r0, r1 + /* ptr -= 2*po; */ + sub r12/*ptr*/, r12, r2/*po*/<< 1 + st.w r10/*pcm_1*/++, r1 + + + /* ML0(hi, lo, (*fe)[0], ptr[7 + 17 - 1]); + MLA(hi, lo, (*fe)[1], ptr[8 + 17 - 1]); + MLA(hi, lo, (*fe)[2], ptr[9 + 17 - 1]); + MLA(hi, lo, (*fe)[3], ptr[10 + 17 - 1]); + MLA(hi, lo, (*fe)[4], ptr[11 + 17 - 1]); + MLA(hi, lo, (*fe)[5], ptr[12 + 17 - 1]); + MLA(hi, lo, (*fe)[6], ptr[13 + 17 - 1]); + MLA(hi, lo, (*fe)[7], ptr[14 + 17 - 1]); */ + window_2 r11/*fe*/,r12/*ptr*/,r0/*acc*/,16/*off*/,1/*mul*/,r2,r3,r4,r5,r6,r7 + /* MLA(hi, lo, (*fo)[7], ptr[14]); + MLA(hi, lo, (*fo)[6], ptr[13]); + MLA(hi, lo, (*fo)[5], ptr[12]); + MLA(hi, lo, (*fo)[4], ptr[11]); + MLA(hi, lo, (*fo)[3], ptr[10]); + MLA(hi, lo, (*fo)[2], ptr[9]); + MLA(hi, lo, (*fo)[1], ptr[8]); + MLA(hi, lo, (*fo)[0], ptr[7]); */ + window_2 r8/*fo*/,r12/*ptr*/,r0/*acc*/,0/*off*/,0/*mac*/,r2,r3,r4,r5,r6,r7 + + + /* *pcm2-- = SHIFT(MLZ(hi, lo)); */ + lddsp r3, sp[4] + lddsp r2, sp[0] + scale r1, r0, r1 + st.w --lr/*pcm_2*/, r1 + + /* ptr += 2*po; */ + add r12/*ptr*/, r12, r3/*po*/<< 1 + + /* ++fo; + } */ + sub r8/*fo*/, -8*4 + + sub r2, 1 + stdsp sp[0], r2 + brne even_loop + + /* ptr += 33; */ + sub r12/*ptr*/, -33*2 + + /* ML0(hi, lo, (*fo)[0], ptr[0 + 17]); + MLA(hi, lo, (*fo)[1], ptr[7 + 17]); + MLA(hi, lo, (*fo)[2], ptr[6 + 17]); + MLA(hi, lo, (*fo)[3], ptr[5 + 17]); + MLA(hi, lo, (*fo)[4], ptr[4 + 17]); + MLA(hi, lo, (*fo)[5], ptr[3 + 17]); + MLA(hi, lo, (*fo)[6], ptr[2 + 17]); + MLA(hi, lo, (*fo)[7], ptr[1 + 17]); */ + window_1 r8/*fo*/,r12/*ptr*/,r0/*acc*/,17/*off*/,1/*mul*/,r2,r3,r4,r5,r6,r7 + + + +synth_end: + /* *pcm1 = SHIFT(-MLZ(hi, lo)); */ + scale r1, r0, r1 + neg r1 + st.w r10/*pcm_1*/, r1 + + mov r12, r10 + sub sp, -8 + popm r0-r7, pc + + + + +