mirror of https://github.com/mpv-player/mpv
An altivec-optimized DCT64 for mp3lib
(partially, it seems roughly three times as fast as
the C code according to quick-n-dirty gprof tests)
This one is bit-perfect.
patch by Romain Dolbeau <dolbeau@irisa.fr>
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9003 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
arpi
parent
418e699d7e
commit
f0c90c8e00
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@ -22,6 +22,13 @@ OBJS += dct36_3dnow.o dct64_3dnow.o
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SRCS += dct36_k7.s dct64_k7.c
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OBJS += dct36_k7.o dct64_k7.o
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endif
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ifeq ($(TARGET_ARCH_POWERPC),yes)
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ifeq ($(TARGET_ALTIVEC),yes)
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SRCS += dct64_altivec.c
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OBJS += dct64_altivec.o
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CFLAGS += -faltivec
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endif
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endif
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.SUFFIXES: .c .o
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@ -0,0 +1,525 @@
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/*
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* Discrete Cosine Tansform (DCT) for subband synthesis
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* optimized for machines with no auto-increment.
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* The performance is highly compiler dependend. Maybe
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* the dct64.c version for 'normal' processor may be faster
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* even for Intel processors.
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*/
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#define real float
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#include "mpg123.h"
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#ifdef HAVE_ALTIVEC
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// used to build registers permutation vectors (vcprm)
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// the 's' are for words in the _s_econd vector
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#define WORD_0 0x00,0x01,0x02,0x03
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#define WORD_1 0x04,0x05,0x06,0x07
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#define WORD_2 0x08,0x09,0x0a,0x0b
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#define WORD_3 0x0c,0x0d,0x0e,0x0f
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#define WORD_s0 0x10,0x11,0x12,0x13
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#define WORD_s1 0x14,0x15,0x16,0x17
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#define WORD_s2 0x18,0x19,0x1a,0x1b
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#define WORD_s3 0x1c,0x1d,0x1e,0x1f
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#define vcprm(a,b,c,d) (const vector unsigned char)(WORD_ ## a, WORD_ ## b, WORD_ ## c, WORD_ ## d)
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// vcprmle is used to keep the same index as in the SSE version.
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// it's the same as vcprm, with the index inversed
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// ('le' is Little Endian)
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#define vcprmle(a,b,c,d) vcprm(d,c,b,a)
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// used to build inverse/identity vectors (vcii)
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// n is _n_egative, p is _p_ositive
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#define FLOAT_n -1.
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#define FLOAT_p 1.
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#define vcii(a,b,c,d) (const vector float)(FLOAT_ ## a, FLOAT_ ## b, FLOAT_ ## c, FLOAT_ ## d)
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void dct64_altivec(real *a,real *b,real *c)
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{
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real __attribute__ ((aligned(16))) b1[0x20];
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real __attribute__ ((aligned(16))) b2[0x20];
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real *out0 = a;
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real *out1 = b;
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real *samples = c;
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const vector float vczero = (const vector float)(0.);
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const vector unsigned char reverse = (const vector unsigned char)vcprm(3,2,1,0);
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if (((unsigned long)b1 & 0x0000000F) ||
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((unsigned long)b2 & 0x0000000F))
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{
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printf("MISALIGNED:\t%p\t%p\t%p\t%p\t%p\n",
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b1, b2, a, b, samples);
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}
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#ifdef ALTIVEC_USE_REFERENCE_C_CODE
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{
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register real *costab = pnts[0];
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b1[0x00] = samples[0x00] + samples[0x1F];
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b1[0x01] = samples[0x01] + samples[0x1E];
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b1[0x02] = samples[0x02] + samples[0x1D];
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b1[0x03] = samples[0x03] + samples[0x1C];
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b1[0x04] = samples[0x04] + samples[0x1B];
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b1[0x05] = samples[0x05] + samples[0x1A];
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b1[0x06] = samples[0x06] + samples[0x19];
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b1[0x07] = samples[0x07] + samples[0x18];
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b1[0x08] = samples[0x08] + samples[0x17];
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b1[0x09] = samples[0x09] + samples[0x16];
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b1[0x0A] = samples[0x0A] + samples[0x15];
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b1[0x0B] = samples[0x0B] + samples[0x14];
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b1[0x0C] = samples[0x0C] + samples[0x13];
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b1[0x0D] = samples[0x0D] + samples[0x12];
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b1[0x0E] = samples[0x0E] + samples[0x11];
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b1[0x0F] = samples[0x0F] + samples[0x10];
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b1[0x10] = (samples[0x0F] - samples[0x10]) * costab[0xF];
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b1[0x11] = (samples[0x0E] - samples[0x11]) * costab[0xE];
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b1[0x12] = (samples[0x0D] - samples[0x12]) * costab[0xD];
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b1[0x13] = (samples[0x0C] - samples[0x13]) * costab[0xC];
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b1[0x14] = (samples[0x0B] - samples[0x14]) * costab[0xB];
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b1[0x15] = (samples[0x0A] - samples[0x15]) * costab[0xA];
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b1[0x16] = (samples[0x09] - samples[0x16]) * costab[0x9];
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b1[0x17] = (samples[0x08] - samples[0x17]) * costab[0x8];
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b1[0x18] = (samples[0x07] - samples[0x18]) * costab[0x7];
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b1[0x19] = (samples[0x06] - samples[0x19]) * costab[0x6];
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b1[0x1A] = (samples[0x05] - samples[0x1A]) * costab[0x5];
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b1[0x1B] = (samples[0x04] - samples[0x1B]) * costab[0x4];
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b1[0x1C] = (samples[0x03] - samples[0x1C]) * costab[0x3];
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b1[0x1D] = (samples[0x02] - samples[0x1D]) * costab[0x2];
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b1[0x1E] = (samples[0x01] - samples[0x1E]) * costab[0x1];
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b1[0x1F] = (samples[0x00] - samples[0x1F]) * costab[0x0];
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}
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{
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register real *costab = pnts[1];
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b2[0x00] = b1[0x00] + b1[0x0F];
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b2[0x01] = b1[0x01] + b1[0x0E];
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b2[0x02] = b1[0x02] + b1[0x0D];
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b2[0x03] = b1[0x03] + b1[0x0C];
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b2[0x04] = b1[0x04] + b1[0x0B];
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b2[0x05] = b1[0x05] + b1[0x0A];
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b2[0x06] = b1[0x06] + b1[0x09];
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b2[0x07] = b1[0x07] + b1[0x08];
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b2[0x08] = (b1[0x07] - b1[0x08]) * costab[7];
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b2[0x09] = (b1[0x06] - b1[0x09]) * costab[6];
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b2[0x0A] = (b1[0x05] - b1[0x0A]) * costab[5];
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b2[0x0B] = (b1[0x04] - b1[0x0B]) * costab[4];
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b2[0x0C] = (b1[0x03] - b1[0x0C]) * costab[3];
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b2[0x0D] = (b1[0x02] - b1[0x0D]) * costab[2];
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b2[0x0E] = (b1[0x01] - b1[0x0E]) * costab[1];
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b2[0x0F] = (b1[0x00] - b1[0x0F]) * costab[0];
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b2[0x10] = b1[0x10] + b1[0x1F];
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b2[0x11] = b1[0x11] + b1[0x1E];
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b2[0x12] = b1[0x12] + b1[0x1D];
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b2[0x13] = b1[0x13] + b1[0x1C];
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b2[0x14] = b1[0x14] + b1[0x1B];
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b2[0x15] = b1[0x15] + b1[0x1A];
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b2[0x16] = b1[0x16] + b1[0x19];
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b2[0x17] = b1[0x17] + b1[0x18];
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b2[0x18] = (b1[0x18] - b1[0x17]) * costab[7];
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b2[0x19] = (b1[0x19] - b1[0x16]) * costab[6];
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b2[0x1A] = (b1[0x1A] - b1[0x15]) * costab[5];
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b2[0x1B] = (b1[0x1B] - b1[0x14]) * costab[4];
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b2[0x1C] = (b1[0x1C] - b1[0x13]) * costab[3];
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b2[0x1D] = (b1[0x1D] - b1[0x12]) * costab[2];
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b2[0x1E] = (b1[0x1E] - b1[0x11]) * costab[1];
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b2[0x1F] = (b1[0x1F] - b1[0x10]) * costab[0];
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}
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{
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register real *costab = pnts[2];
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b1[0x00] = b2[0x00] + b2[0x07];
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b1[0x01] = b2[0x01] + b2[0x06];
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b1[0x02] = b2[0x02] + b2[0x05];
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b1[0x03] = b2[0x03] + b2[0x04];
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b1[0x04] = (b2[0x03] - b2[0x04]) * costab[3];
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b1[0x05] = (b2[0x02] - b2[0x05]) * costab[2];
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b1[0x06] = (b2[0x01] - b2[0x06]) * costab[1];
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b1[0x07] = (b2[0x00] - b2[0x07]) * costab[0];
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b1[0x08] = b2[0x08] + b2[0x0F];
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b1[0x09] = b2[0x09] + b2[0x0E];
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b1[0x0A] = b2[0x0A] + b2[0x0D];
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b1[0x0B] = b2[0x0B] + b2[0x0C];
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b1[0x0C] = (b2[0x0C] - b2[0x0B]) * costab[3];
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b1[0x0D] = (b2[0x0D] - b2[0x0A]) * costab[2];
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b1[0x0E] = (b2[0x0E] - b2[0x09]) * costab[1];
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b1[0x0F] = (b2[0x0F] - b2[0x08]) * costab[0];
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b1[0x10] = b2[0x10] + b2[0x17];
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b1[0x11] = b2[0x11] + b2[0x16];
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b1[0x12] = b2[0x12] + b2[0x15];
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b1[0x13] = b2[0x13] + b2[0x14];
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b1[0x14] = (b2[0x13] - b2[0x14]) * costab[3];
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b1[0x15] = (b2[0x12] - b2[0x15]) * costab[2];
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b1[0x16] = (b2[0x11] - b2[0x16]) * costab[1];
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b1[0x17] = (b2[0x10] - b2[0x17]) * costab[0];
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b1[0x18] = b2[0x18] + b2[0x1F];
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b1[0x19] = b2[0x19] + b2[0x1E];
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b1[0x1A] = b2[0x1A] + b2[0x1D];
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b1[0x1B] = b2[0x1B] + b2[0x1C];
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b1[0x1C] = (b2[0x1C] - b2[0x1B]) * costab[3];
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b1[0x1D] = (b2[0x1D] - b2[0x1A]) * costab[2];
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b1[0x1E] = (b2[0x1E] - b2[0x19]) * costab[1];
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b1[0x1F] = (b2[0x1F] - b2[0x18]) * costab[0];
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}
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#else /* ALTIVEC_USE_REFERENCE_C_CODE */
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// How does it work ?
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// the first three passes are reproducted in the three block below
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// all computations are done on a 4 elements vector
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// 'reverse' is a special perumtation vector used to reverse
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// the order of the elements inside a vector.
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// note that all loads/stores to b1 (b2) between passes 1 and 2 (2 and 3)
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// have been removed, all elements are stored inside b1vX (b2vX)
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{
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register vector float
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b1v0, b1v1, b1v2, b1v3,
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b1v4, b1v5, b1v6, b1v7;
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register vector float
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temp1, temp2;
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{
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register real *costab = pnts[0];
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register vector float
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samplesv1, samplesv2, samplesv3, samplesv4,
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samplesv5, samplesv6, samplesv7, samplesv8,
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samplesv9;
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register vector unsigned char samples_perm = vec_lvsl(0, samples);
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register vector float costabv1, costabv2, costabv3, costabv4, costabv5;
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register vector unsigned char costab_perm = vec_lvsl(0, costab);
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samplesv1 = vec_ld(0, samples);
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samplesv2 = vec_ld(16, samples);
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samplesv1 = vec_perm(samplesv1, samplesv2, samples_perm);
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samplesv3 = vec_ld(32, samples);
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samplesv2 = vec_perm(samplesv2, samplesv3, samples_perm);
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samplesv4 = vec_ld(48, samples);
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samplesv3 = vec_perm(samplesv3, samplesv4, samples_perm);
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samplesv5 = vec_ld(64, samples);
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samplesv4 = vec_perm(samplesv4, samplesv5, samples_perm);
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samplesv6 = vec_ld(80, samples);
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samplesv5 = vec_perm(samplesv5, samplesv6, samples_perm);
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samplesv7 = vec_ld(96, samples);
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samplesv6 = vec_perm(samplesv6, samplesv7, samples_perm);
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samplesv8 = vec_ld(112, samples);
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samplesv7 = vec_perm(samplesv7, samplesv8, samples_perm);
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samplesv9 = vec_ld(128, samples);
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samplesv8 = vec_perm(samplesv8, samplesv9, samples_perm);
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temp1 = vec_add(samplesv1,
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vec_perm(samplesv8, samplesv8, reverse));
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//vec_st(temp1, 0, b1);
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b1v0 = temp1;
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temp1 = vec_add(samplesv2,
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vec_perm(samplesv7, samplesv7, reverse));
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//vec_st(temp1, 16, b1);
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b1v1 = temp1;
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temp1 = vec_add(samplesv3,
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vec_perm(samplesv6, samplesv6, reverse));
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//vec_st(temp1, 32, b1);
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b1v2 = temp1;
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temp1 = vec_add(samplesv4,
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vec_perm(samplesv5, samplesv5, reverse));
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//vec_st(temp1, 48, b1);
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b1v3 = temp1;
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costabv1 = vec_ld(0, costab);
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costabv2 = vec_ld(16, costab);
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costabv1 = vec_perm(costabv1, costabv2, costab_perm);
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costabv3 = vec_ld(32, costab);
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costabv2 = vec_perm(costabv2, costabv3, costab_perm);
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costabv4 = vec_ld(48, costab);
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costabv3 = vec_perm(costabv3, costabv4, costab_perm);
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costabv5 = vec_ld(64, costab);
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costabv4 = vec_perm(costabv4, costabv5, costab_perm);
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temp1 = vec_sub(vec_perm(samplesv4, samplesv4, reverse),
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samplesv5);
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temp2 = vec_madd(temp1,
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vec_perm(costabv4, costabv4, reverse),
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vczero);
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//vec_st(temp2, 64, b1);
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b1v4 = temp2;
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temp1 = vec_sub(vec_perm(samplesv3, samplesv3, reverse),
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samplesv6);
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temp2 = vec_madd(temp1,
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vec_perm(costabv3, costabv3, reverse),
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vczero);
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//vec_st(temp2, 80, b1);
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b1v5 = temp2;
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temp1 = vec_sub(vec_perm(samplesv2, samplesv2, reverse),
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samplesv7);
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temp2 = vec_madd(temp1,
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vec_perm(costabv2, costabv2, reverse),
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vczero);
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//vec_st(temp2, 96, b1);
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b1v6 = temp2;
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temp1 = vec_sub(vec_perm(samplesv1, samplesv1, reverse),
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samplesv8);
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temp2 = vec_madd(temp1,
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vec_perm(costabv1, costabv1, reverse),
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vczero);
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//vec_st(temp2, 112, b1);
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b1v7 = temp2;
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}
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{
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register vector float
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b2v0, b2v1, b2v2, b2v3,
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b2v4, b2v5, b2v6, b2v7;
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{
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register real *costab = pnts[1];
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register vector float costabv1r, costabv2r, costabv1, costabv2, costabv3;
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register vector unsigned char costab_perm = vec_lvsl(0, costab);
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costabv1 = vec_ld(0, costab);
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costabv2 = vec_ld(16, costab);
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costabv1 = vec_perm(costabv1, costabv2, costab_perm);
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costabv3 = vec_ld(32, costab);
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costabv2 = vec_perm(costabv2, costabv3 , costab_perm);
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costabv1r = vec_perm(costabv1, costabv1, reverse);
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costabv2r = vec_perm(costabv2, costabv2, reverse);
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temp1 = vec_add(b1v0, vec_perm(b1v3, b1v3, reverse));
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//vec_st(temp1, 0, b2);
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b2v0 = temp1;
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temp1 = vec_add(b1v1, vec_perm(b1v2, b1v2, reverse));
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//vec_st(temp1, 16, b2);
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b2v1 = temp1;
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temp2 = vec_sub(vec_perm(b1v1, b1v1, reverse), b1v2);
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temp1 = vec_madd(temp2, costabv2r, vczero);
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//vec_st(temp1, 32, b2);
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b2v2 = temp1;
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temp2 = vec_sub(vec_perm(b1v0, b1v0, reverse), b1v3);
|
||||
temp1 = vec_madd(temp2, costabv1r, vczero);
|
||||
//vec_st(temp1, 48, b2);
|
||||
b2v3 = temp1;
|
||||
temp1 = vec_add(b1v4, vec_perm(b1v7, b1v7, reverse));
|
||||
//vec_st(temp1, 64, b2);
|
||||
b2v4 = temp1;
|
||||
temp1 = vec_add(b1v5, vec_perm(b1v6, b1v6, reverse));
|
||||
//vec_st(temp1, 80, b2);
|
||||
b2v5 = temp1;
|
||||
temp2 = vec_sub(b1v6, vec_perm(b1v5, b1v5, reverse));
|
||||
temp1 = vec_madd(temp2, costabv2r, vczero);
|
||||
//vec_st(temp1, 96, b2);
|
||||
b2v6 = temp1;
|
||||
temp2 = vec_sub(b1v7, vec_perm(b1v4, b1v4, reverse));
|
||||
temp1 = vec_madd(temp2, costabv1r, vczero);
|
||||
//vec_st(temp1, 112, b2);
|
||||
b2v7 = temp1;
|
||||
}
|
||||
|
||||
{
|
||||
register real *costab = pnts[2];
|
||||
|
||||
|
||||
vector float costabv1r, costabv1, costabv2;
|
||||
vector unsigned char costab_perm = vec_lvsl(0, costab);
|
||||
|
||||
costabv1 = vec_ld(0, costab);
|
||||
costabv2 = vec_ld(16, costab);
|
||||
costabv1 = vec_perm(costabv1, costabv2, costab_perm);
|
||||
costabv1r = vec_perm(costabv1, costabv1, reverse);
|
||||
|
||||
temp1 = vec_add(b2v0, vec_perm(b2v1, b2v1, reverse));
|
||||
vec_st(temp1, 0, b1);
|
||||
temp2 = vec_sub(vec_perm(b2v0, b2v0, reverse), b2v1);
|
||||
temp1 = vec_madd(temp2, costabv1r, vczero);
|
||||
vec_st(temp1, 16, b1);
|
||||
|
||||
temp1 = vec_add(b2v2, vec_perm(b2v3, b2v3, reverse));
|
||||
vec_st(temp1, 32, b1);
|
||||
temp2 = vec_sub(b2v3, vec_perm(b2v2, b2v2, reverse));
|
||||
temp1 = vec_madd(temp2, costabv1r, vczero);
|
||||
vec_st(temp1, 48, b1);
|
||||
|
||||
temp1 = vec_add(b2v4, vec_perm(b2v5, b2v5, reverse));
|
||||
vec_st(temp1, 64, b1);
|
||||
temp2 = vec_sub(vec_perm(b2v4, b2v4, reverse), b2v5);
|
||||
temp1 = vec_madd(temp2, costabv1r, vczero);
|
||||
vec_st(temp1, 80, b1);
|
||||
|
||||
temp1 = vec_add(b2v6, vec_perm(b2v7, b2v7, reverse));
|
||||
vec_st(temp1, 96, b1);
|
||||
temp2 = vec_sub(b2v7, vec_perm(b2v6, b2v6, reverse));
|
||||
temp1 = vec_madd(temp2, costabv1r, vczero);
|
||||
vec_st(temp1, 112, b1);
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* ALTIVEC_USE_REFERENCE_C_CODE */
|
||||
|
||||
{
|
||||
register real const cos0 = pnts[3][0];
|
||||
register real const cos1 = pnts[3][1];
|
||||
|
||||
b2[0x00] = b1[0x00] + b1[0x03];
|
||||
b2[0x01] = b1[0x01] + b1[0x02];
|
||||
b2[0x02] = (b1[0x01] - b1[0x02]) * cos1;
|
||||
b2[0x03] = (b1[0x00] - b1[0x03]) * cos0;
|
||||
b2[0x04] = b1[0x04] + b1[0x07];
|
||||
b2[0x05] = b1[0x05] + b1[0x06];
|
||||
b2[0x06] = (b1[0x06] - b1[0x05]) * cos1;
|
||||
b2[0x07] = (b1[0x07] - b1[0x04]) * cos0;
|
||||
b2[0x08] = b1[0x08] + b1[0x0B];
|
||||
b2[0x09] = b1[0x09] + b1[0x0A];
|
||||
b2[0x0A] = (b1[0x09] - b1[0x0A]) * cos1;
|
||||
b2[0x0B] = (b1[0x08] - b1[0x0B]) * cos0;
|
||||
b2[0x0C] = b1[0x0C] + b1[0x0F];
|
||||
b2[0x0D] = b1[0x0D] + b1[0x0E];
|
||||
b2[0x0E] = (b1[0x0E] - b1[0x0D]) * cos1;
|
||||
b2[0x0F] = (b1[0x0F] - b1[0x0C]) * cos0;
|
||||
b2[0x10] = b1[0x10] + b1[0x13];
|
||||
b2[0x11] = b1[0x11] + b1[0x12];
|
||||
b2[0x12] = (b1[0x11] - b1[0x12]) * cos1;
|
||||
b2[0x13] = (b1[0x10] - b1[0x13]) * cos0;
|
||||
b2[0x14] = b1[0x14] + b1[0x17];
|
||||
b2[0x15] = b1[0x15] + b1[0x16];
|
||||
b2[0x16] = (b1[0x16] - b1[0x15]) * cos1;
|
||||
b2[0x17] = (b1[0x17] - b1[0x14]) * cos0;
|
||||
b2[0x18] = b1[0x18] + b1[0x1B];
|
||||
b2[0x19] = b1[0x19] + b1[0x1A];
|
||||
b2[0x1A] = (b1[0x19] - b1[0x1A]) * cos1;
|
||||
b2[0x1B] = (b1[0x18] - b1[0x1B]) * cos0;
|
||||
b2[0x1C] = b1[0x1C] + b1[0x1F];
|
||||
b2[0x1D] = b1[0x1D] + b1[0x1E];
|
||||
b2[0x1E] = (b1[0x1E] - b1[0x1D]) * cos1;
|
||||
b2[0x1F] = (b1[0x1F] - b1[0x1C]) * cos0;
|
||||
}
|
||||
|
||||
{
|
||||
register real const cos0 = pnts[4][0];
|
||||
|
||||
b1[0x00] = b2[0x00] + b2[0x01];
|
||||
b1[0x01] = (b2[0x00] - b2[0x01]) * cos0;
|
||||
b1[0x02] = b2[0x02] + b2[0x03];
|
||||
b1[0x03] = (b2[0x03] - b2[0x02]) * cos0;
|
||||
b1[0x02] += b1[0x03];
|
||||
|
||||
b1[0x04] = b2[0x04] + b2[0x05];
|
||||
b1[0x05] = (b2[0x04] - b2[0x05]) * cos0;
|
||||
b1[0x06] = b2[0x06] + b2[0x07];
|
||||
b1[0x07] = (b2[0x07] - b2[0x06]) * cos0;
|
||||
b1[0x06] += b1[0x07];
|
||||
b1[0x04] += b1[0x06];
|
||||
b1[0x06] += b1[0x05];
|
||||
b1[0x05] += b1[0x07];
|
||||
|
||||
b1[0x08] = b2[0x08] + b2[0x09];
|
||||
b1[0x09] = (b2[0x08] - b2[0x09]) * cos0;
|
||||
b1[0x0A] = b2[0x0A] + b2[0x0B];
|
||||
b1[0x0B] = (b2[0x0B] - b2[0x0A]) * cos0;
|
||||
b1[0x0A] += b1[0x0B];
|
||||
|
||||
b1[0x0C] = b2[0x0C] + b2[0x0D];
|
||||
b1[0x0D] = (b2[0x0C] - b2[0x0D]) * cos0;
|
||||
b1[0x0E] = b2[0x0E] + b2[0x0F];
|
||||
b1[0x0F] = (b2[0x0F] - b2[0x0E]) * cos0;
|
||||
b1[0x0E] += b1[0x0F];
|
||||
b1[0x0C] += b1[0x0E];
|
||||
b1[0x0E] += b1[0x0D];
|
||||
b1[0x0D] += b1[0x0F];
|
||||
|
||||
b1[0x10] = b2[0x10] + b2[0x11];
|
||||
b1[0x11] = (b2[0x10] - b2[0x11]) * cos0;
|
||||
b1[0x12] = b2[0x12] + b2[0x13];
|
||||
b1[0x13] = (b2[0x13] - b2[0x12]) * cos0;
|
||||
b1[0x12] += b1[0x13];
|
||||
|
||||
b1[0x14] = b2[0x14] + b2[0x15];
|
||||
b1[0x15] = (b2[0x14] - b2[0x15]) * cos0;
|
||||
b1[0x16] = b2[0x16] + b2[0x17];
|
||||
b1[0x17] = (b2[0x17] - b2[0x16]) * cos0;
|
||||
b1[0x16] += b1[0x17];
|
||||
b1[0x14] += b1[0x16];
|
||||
b1[0x16] += b1[0x15];
|
||||
b1[0x15] += b1[0x17];
|
||||
|
||||
b1[0x18] = b2[0x18] + b2[0x19];
|
||||
b1[0x19] = (b2[0x18] - b2[0x19]) * cos0;
|
||||
b1[0x1A] = b2[0x1A] + b2[0x1B];
|
||||
b1[0x1B] = (b2[0x1B] - b2[0x1A]) * cos0;
|
||||
b1[0x1A] += b1[0x1B];
|
||||
|
||||
b1[0x1C] = b2[0x1C] + b2[0x1D];
|
||||
b1[0x1D] = (b2[0x1C] - b2[0x1D]) * cos0;
|
||||
b1[0x1E] = b2[0x1E] + b2[0x1F];
|
||||
b1[0x1F] = (b2[0x1F] - b2[0x1E]) * cos0;
|
||||
b1[0x1E] += b1[0x1F];
|
||||
b1[0x1C] += b1[0x1E];
|
||||
b1[0x1E] += b1[0x1D];
|
||||
b1[0x1D] += b1[0x1F];
|
||||
}
|
||||
|
||||
out0[0x10*16] = b1[0x00];
|
||||
out0[0x10*12] = b1[0x04];
|
||||
out0[0x10* 8] = b1[0x02];
|
||||
out0[0x10* 4] = b1[0x06];
|
||||
out0[0x10* 0] = b1[0x01];
|
||||
out1[0x10* 0] = b1[0x01];
|
||||
out1[0x10* 4] = b1[0x05];
|
||||
out1[0x10* 8] = b1[0x03];
|
||||
out1[0x10*12] = b1[0x07];
|
||||
|
||||
b1[0x08] += b1[0x0C];
|
||||
out0[0x10*14] = b1[0x08];
|
||||
b1[0x0C] += b1[0x0a];
|
||||
out0[0x10*10] = b1[0x0C];
|
||||
b1[0x0A] += b1[0x0E];
|
||||
out0[0x10* 6] = b1[0x0A];
|
||||
b1[0x0E] += b1[0x09];
|
||||
out0[0x10* 2] = b1[0x0E];
|
||||
b1[0x09] += b1[0x0D];
|
||||
out1[0x10* 2] = b1[0x09];
|
||||
b1[0x0D] += b1[0x0B];
|
||||
out1[0x10* 6] = b1[0x0D];
|
||||
b1[0x0B] += b1[0x0F];
|
||||
out1[0x10*10] = b1[0x0B];
|
||||
out1[0x10*14] = b1[0x0F];
|
||||
|
||||
b1[0x18] += b1[0x1C];
|
||||
out0[0x10*15] = b1[0x10] + b1[0x18];
|
||||
out0[0x10*13] = b1[0x18] + b1[0x14];
|
||||
b1[0x1C] += b1[0x1a];
|
||||
out0[0x10*11] = b1[0x14] + b1[0x1C];
|
||||
out0[0x10* 9] = b1[0x1C] + b1[0x12];
|
||||
b1[0x1A] += b1[0x1E];
|
||||
out0[0x10* 7] = b1[0x12] + b1[0x1A];
|
||||
out0[0x10* 5] = b1[0x1A] + b1[0x16];
|
||||
b1[0x1E] += b1[0x19];
|
||||
out0[0x10* 3] = b1[0x16] + b1[0x1E];
|
||||
out0[0x10* 1] = b1[0x1E] + b1[0x11];
|
||||
b1[0x19] += b1[0x1D];
|
||||
out1[0x10* 1] = b1[0x11] + b1[0x19];
|
||||
out1[0x10* 3] = b1[0x19] + b1[0x15];
|
||||
b1[0x1D] += b1[0x1B];
|
||||
out1[0x10* 5] = b1[0x15] + b1[0x1D];
|
||||
out1[0x10* 7] = b1[0x1D] + b1[0x13];
|
||||
b1[0x1B] += b1[0x1F];
|
||||
out1[0x10* 9] = b1[0x13] + b1[0x1B];
|
||||
out1[0x10*11] = b1[0x1B] + b1[0x17];
|
||||
out1[0x10*13] = b1[0x17] + b1[0x1F];
|
||||
out1[0x10*15] = b1[0x1F];
|
||||
}
|
||||
|
||||
#endif HAVE_ALTIVEC
|
||||
|
||||
|
|
@ -158,6 +158,13 @@ int synth_1to1_MMX( real *bandPtr,int channel,short * samples)
|
|||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_ALTIVEC
|
||||
#define dct64_base(a,b,c) if(gCpuCaps.hasAltiVec) dct64_altivec(a,b,c); else dct64(a,b,c)
|
||||
#else /* HAVE_ALTIVEC */
|
||||
#define dct64_base(a,b,c) dct64(a,b,c)
|
||||
#endif /* HAVE_ALTIVEC */
|
||||
|
||||
static int synth_1to1(real *bandPtr,int channel,unsigned char *out,int *pnt)
|
||||
{
|
||||
static real buffs[2][2][0x110];
|
||||
|
|
@ -192,12 +199,12 @@ static int synth_1to1(real *bandPtr,int channel,unsigned char *out,int *pnt)
|
|||
if(bo & 0x1) {
|
||||
b0 = buf[0];
|
||||
bo1 = bo;
|
||||
dct64(buf[1]+((bo+1)&0xf),buf[0]+bo,bandPtr);
|
||||
dct64_base(buf[1]+((bo+1)&0xf),buf[0]+bo,bandPtr);
|
||||
}
|
||||
else {
|
||||
b0 = buf[1];
|
||||
bo1 = bo+1;
|
||||
dct64(buf[0]+bo,buf[1]+bo+1,bandPtr);
|
||||
dct64_base(buf[0]+bo,buf[1]+bo+1,bandPtr);
|
||||
}
|
||||
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue