mirror of
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816 lines
36 KiB
C
816 lines
36 KiB
C
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/*
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* Copyright (c) 2004 Romain Dolbeau <romain@dolbeau.org>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include <stdint.h>
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#include <string.h>
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#include "libavutil/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/mem.h"
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#include "libavutil/ppc/cpu.h"
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#include "libavutil/ppc/util_altivec.h"
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#include "libavcodec/h264dec.h"
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#include "libavcodec/h264dsp.h"
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#if HAVE_ALTIVEC
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/****************************************************************************
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* IDCT transform:
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****************************************************************************/
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#define VEC_1D_DCT(vb0,vb1,vb2,vb3,va0,va1,va2,va3) \
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/* 1st stage */ \
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vz0 = vec_add(vb0,vb2); /* temp[0] = Y[0] + Y[2] */ \
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vz1 = vec_sub(vb0,vb2); /* temp[1] = Y[0] - Y[2] */ \
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vz2 = vec_sra(vb1,vec_splat_u16(1)); \
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vz2 = vec_sub(vz2,vb3); /* temp[2] = Y[1].1/2 - Y[3] */ \
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vz3 = vec_sra(vb3,vec_splat_u16(1)); \
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vz3 = vec_add(vb1,vz3); /* temp[3] = Y[1] + Y[3].1/2 */ \
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/* 2nd stage: output */ \
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va0 = vec_add(vz0,vz3); /* x[0] = temp[0] + temp[3] */ \
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va1 = vec_add(vz1,vz2); /* x[1] = temp[1] + temp[2] */ \
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va2 = vec_sub(vz1,vz2); /* x[2] = temp[1] - temp[2] */ \
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va3 = vec_sub(vz0,vz3) /* x[3] = temp[0] - temp[3] */
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#define VEC_TRANSPOSE_4(a0,a1,a2,a3,b0,b1,b2,b3) \
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b0 = vec_mergeh( a0, a0 ); \
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b1 = vec_mergeh( a1, a0 ); \
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b2 = vec_mergeh( a2, a0 ); \
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b3 = vec_mergeh( a3, a0 ); \
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a0 = vec_mergeh( b0, b2 ); \
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a1 = vec_mergel( b0, b2 ); \
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a2 = vec_mergeh( b1, b3 ); \
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a3 = vec_mergel( b1, b3 ); \
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b0 = vec_mergeh( a0, a2 ); \
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b1 = vec_mergel( a0, a2 ); \
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b2 = vec_mergeh( a1, a3 ); \
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b3 = vec_mergel( a1, a3 )
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#if HAVE_BIGENDIAN
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#define vdst_load(d) \
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vdst_orig = vec_ld(0, dst); \
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vdst = vec_perm(vdst_orig, zero_u8v, vdst_mask);
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#else
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#define vdst_load(d) vdst = vec_vsx_ld(0, dst)
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#endif
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#define VEC_LOAD_U8_ADD_S16_STORE_U8(va) \
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vdst_load(); \
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vdst_ss = (vec_s16) VEC_MERGEH(zero_u8v, vdst); \
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va = vec_add(va, vdst_ss); \
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va_u8 = vec_packsu(va, zero_s16v); \
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va_u32 = vec_splat((vec_u32)va_u8, 0); \
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vec_ste(va_u32, element, (uint32_t*)dst);
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static void h264_idct_add_altivec(uint8_t *dst, int16_t *block, int stride)
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{
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vec_s16 va0, va1, va2, va3;
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vec_s16 vz0, vz1, vz2, vz3;
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vec_s16 vtmp0, vtmp1, vtmp2, vtmp3;
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vec_u8 va_u8;
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vec_u32 va_u32;
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vec_s16 vdst_ss;
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const vec_u16 v6us = vec_splat_u16(6);
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vec_u8 vdst, vdst_orig;
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vec_u8 vdst_mask = vec_lvsl(0, dst);
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int element = ((unsigned long)dst & 0xf) >> 2;
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LOAD_ZERO;
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block[0] += 32; /* add 32 as a DC-level for rounding */
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vtmp0 = vec_ld(0,block);
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vtmp1 = vec_sld(vtmp0, vtmp0, 8);
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vtmp2 = vec_ld(16,block);
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vtmp3 = vec_sld(vtmp2, vtmp2, 8);
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memset(block, 0, 16 * sizeof(int16_t));
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VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3);
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VEC_TRANSPOSE_4(va0,va1,va2,va3,vtmp0,vtmp1,vtmp2,vtmp3);
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VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3);
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va0 = vec_sra(va0,v6us);
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va1 = vec_sra(va1,v6us);
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va2 = vec_sra(va2,v6us);
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va3 = vec_sra(va3,v6us);
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VEC_LOAD_U8_ADD_S16_STORE_U8(va0);
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dst += stride;
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VEC_LOAD_U8_ADD_S16_STORE_U8(va1);
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dst += stride;
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VEC_LOAD_U8_ADD_S16_STORE_U8(va2);
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dst += stride;
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VEC_LOAD_U8_ADD_S16_STORE_U8(va3);
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}
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#define IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7, d0, d1, d2, d3, d4, d5, d6, d7) {\
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/* a0 = SRC(0) + SRC(4); */ \
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vec_s16 a0v = vec_add(s0, s4); \
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/* a2 = SRC(0) - SRC(4); */ \
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vec_s16 a2v = vec_sub(s0, s4); \
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/* a4 = (SRC(2)>>1) - SRC(6); */ \
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vec_s16 a4v = vec_sub(vec_sra(s2, onev), s6); \
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/* a6 = (SRC(6)>>1) + SRC(2); */ \
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vec_s16 a6v = vec_add(vec_sra(s6, onev), s2); \
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/* b0 = a0 + a6; */ \
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vec_s16 b0v = vec_add(a0v, a6v); \
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/* b2 = a2 + a4; */ \
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vec_s16 b2v = vec_add(a2v, a4v); \
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/* b4 = a2 - a4; */ \
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vec_s16 b4v = vec_sub(a2v, a4v); \
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/* b6 = a0 - a6; */ \
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vec_s16 b6v = vec_sub(a0v, a6v); \
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/* a1 = SRC(5) - SRC(3) - SRC(7) - (SRC(7)>>1); */ \
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/* a1 = (SRC(5)-SRC(3)) - (SRC(7) + (SRC(7)>>1)); */ \
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vec_s16 a1v = vec_sub( vec_sub(s5, s3), vec_add(s7, vec_sra(s7, onev)) ); \
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/* a3 = SRC(7) + SRC(1) - SRC(3) - (SRC(3)>>1); */ \
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/* a3 = (SRC(7)+SRC(1)) - (SRC(3) + (SRC(3)>>1)); */ \
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vec_s16 a3v = vec_sub( vec_add(s7, s1), vec_add(s3, vec_sra(s3, onev)) );\
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/* a5 = SRC(7) - SRC(1) + SRC(5) + (SRC(5)>>1); */ \
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/* a5 = (SRC(7)-SRC(1)) + SRC(5) + (SRC(5)>>1); */ \
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vec_s16 a5v = vec_add( vec_sub(s7, s1), vec_add(s5, vec_sra(s5, onev)) );\
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/* a7 = SRC(5)+SRC(3) + SRC(1) + (SRC(1)>>1); */ \
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vec_s16 a7v = vec_add( vec_add(s5, s3), vec_add(s1, vec_sra(s1, onev)) );\
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/* b1 = (a7>>2) + a1; */ \
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vec_s16 b1v = vec_add( vec_sra(a7v, twov), a1v); \
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/* b3 = a3 + (a5>>2); */ \
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vec_s16 b3v = vec_add(a3v, vec_sra(a5v, twov)); \
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/* b5 = (a3>>2) - a5; */ \
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vec_s16 b5v = vec_sub( vec_sra(a3v, twov), a5v); \
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/* b7 = a7 - (a1>>2); */ \
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vec_s16 b7v = vec_sub( a7v, vec_sra(a1v, twov)); \
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/* DST(0, b0 + b7); */ \
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d0 = vec_add(b0v, b7v); \
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/* DST(1, b2 + b5); */ \
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d1 = vec_add(b2v, b5v); \
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/* DST(2, b4 + b3); */ \
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d2 = vec_add(b4v, b3v); \
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/* DST(3, b6 + b1); */ \
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d3 = vec_add(b6v, b1v); \
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/* DST(4, b6 - b1); */ \
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d4 = vec_sub(b6v, b1v); \
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/* DST(5, b4 - b3); */ \
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d5 = vec_sub(b4v, b3v); \
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/* DST(6, b2 - b5); */ \
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d6 = vec_sub(b2v, b5v); \
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/* DST(7, b0 - b7); */ \
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d7 = vec_sub(b0v, b7v); \
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}
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#if HAVE_BIGENDIAN
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#define GET_2PERM(ldv, stv, d) \
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ldv = vec_lvsl(0, d); \
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stv = vec_lvsr(8, d);
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#define dstv_load(d) \
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vec_u8 hv = vec_ld( 0, d ); \
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vec_u8 lv = vec_ld( 7, d); \
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vec_u8 dstv = vec_perm( hv, lv, (vec_u8)perm_ldv );
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#define dest_unligned_store(d) \
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vec_u8 edgehv; \
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vec_u8 bodyv = vec_perm( idstsum8, idstsum8, perm_stv ); \
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vec_u8 edgelv = vec_perm( sel, zero_u8v, perm_stv ); \
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lv = vec_sel( lv, bodyv, edgelv ); \
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vec_st( lv, 7, d ); \
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hv = vec_ld( 0, d ); \
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edgehv = vec_perm( zero_u8v, sel, perm_stv ); \
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hv = vec_sel( hv, bodyv, edgehv ); \
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vec_st( hv, 0, d );
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#else
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#define GET_2PERM(ldv, stv, d) {}
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#define dstv_load(d) vec_u8 dstv = vec_vsx_ld(0, d)
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#define dest_unligned_store(d)\
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vec_u8 dst8 = vec_perm((vec_u8)idstsum8, dstv, vcprm(2,3,s2,s3));\
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vec_vsx_st(dst8, 0, d)
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#endif /* HAVE_BIGENDIAN */
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#define ALTIVEC_STORE_SUM_CLIP(dest, idctv, perm_ldv, perm_stv, sel) { \
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/* unaligned load */ \
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dstv_load(dest); \
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vec_s16 idct_sh6 = vec_sra(idctv, sixv); \
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vec_u16 dst16 = (vec_u16)VEC_MERGEH(zero_u8v, dstv); \
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vec_s16 idstsum = vec_adds(idct_sh6, (vec_s16)dst16); \
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vec_u8 idstsum8 = vec_packsu(zero_s16v, idstsum); \
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/* unaligned store */ \
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dest_unligned_store(dest);\
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}
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static void h264_idct8_add_altivec(uint8_t *dst, int16_t *dct, int stride)
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{
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vec_s16 s0, s1, s2, s3, s4, s5, s6, s7;
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vec_s16 d0, d1, d2, d3, d4, d5, d6, d7;
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vec_s16 idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7;
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vec_u8 perm_ldv, perm_stv;
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GET_2PERM(perm_ldv, perm_stv, dst);
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const vec_u16 onev = vec_splat_u16(1);
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const vec_u16 twov = vec_splat_u16(2);
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const vec_u16 sixv = vec_splat_u16(6);
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const vec_u8 sel = (vec_u8) {0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1};
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LOAD_ZERO;
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dct[0] += 32; // rounding for the >>6 at the end
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s0 = vec_ld(0x00, (int16_t*)dct);
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s1 = vec_ld(0x10, (int16_t*)dct);
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s2 = vec_ld(0x20, (int16_t*)dct);
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s3 = vec_ld(0x30, (int16_t*)dct);
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s4 = vec_ld(0x40, (int16_t*)dct);
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s5 = vec_ld(0x50, (int16_t*)dct);
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s6 = vec_ld(0x60, (int16_t*)dct);
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s7 = vec_ld(0x70, (int16_t*)dct);
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memset(dct, 0, 64 * sizeof(int16_t));
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IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7,
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d0, d1, d2, d3, d4, d5, d6, d7);
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TRANSPOSE8( d0, d1, d2, d3, d4, d5, d6, d7 );
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IDCT8_1D_ALTIVEC(d0, d1, d2, d3, d4, d5, d6, d7,
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idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7);
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ALTIVEC_STORE_SUM_CLIP(&dst[0*stride], idct0, perm_ldv, perm_stv, sel);
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ALTIVEC_STORE_SUM_CLIP(&dst[1*stride], idct1, perm_ldv, perm_stv, sel);
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ALTIVEC_STORE_SUM_CLIP(&dst[2*stride], idct2, perm_ldv, perm_stv, sel);
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ALTIVEC_STORE_SUM_CLIP(&dst[3*stride], idct3, perm_ldv, perm_stv, sel);
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ALTIVEC_STORE_SUM_CLIP(&dst[4*stride], idct4, perm_ldv, perm_stv, sel);
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ALTIVEC_STORE_SUM_CLIP(&dst[5*stride], idct5, perm_ldv, perm_stv, sel);
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ALTIVEC_STORE_SUM_CLIP(&dst[6*stride], idct6, perm_ldv, perm_stv, sel);
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ALTIVEC_STORE_SUM_CLIP(&dst[7*stride], idct7, perm_ldv, perm_stv, sel);
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}
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#if HAVE_BIGENDIAN
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#define DST_LD vec_ld
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#else
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#define DST_LD vec_vsx_ld
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#endif
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static av_always_inline void h264_idct_dc_add_internal(uint8_t *dst, int16_t *block, int stride, int size)
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{
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vec_s16 dc16;
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vec_u8 dcplus, dcminus, v0, v1, v2, v3, aligner;
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vec_s32 v_dc32;
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LOAD_ZERO;
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DECLARE_ALIGNED(16, int, dc);
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int i;
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dc = (block[0] + 32) >> 6;
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block[0] = 0;
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v_dc32 = vec_lde(0, &dc);
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dc16 = VEC_SPLAT16((vec_s16)v_dc32, 1);
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if (size == 4)
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dc16 = VEC_SLD16(dc16, zero_s16v, 8);
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dcplus = vec_packsu(dc16, zero_s16v);
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dcminus = vec_packsu(vec_sub(zero_s16v, dc16), zero_s16v);
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#if HAVE_BIGENDIAN
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aligner = vec_lvsr(0, dst);
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dcplus = vec_perm(dcplus, dcplus, aligner);
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dcminus = vec_perm(dcminus, dcminus, aligner);
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#endif
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for (i = 0; i < size; i += 4) {
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v0 = DST_LD(0, dst+0*stride);
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v1 = DST_LD(0, dst+1*stride);
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v2 = DST_LD(0, dst+2*stride);
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v3 = DST_LD(0, dst+3*stride);
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v0 = vec_adds(v0, dcplus);
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v1 = vec_adds(v1, dcplus);
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v2 = vec_adds(v2, dcplus);
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v3 = vec_adds(v3, dcplus);
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v0 = vec_subs(v0, dcminus);
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v1 = vec_subs(v1, dcminus);
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v2 = vec_subs(v2, dcminus);
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v3 = vec_subs(v3, dcminus);
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|
||
|
VEC_ST(v0, 0, dst+0*stride);
|
||
|
VEC_ST(v1, 0, dst+1*stride);
|
||
|
VEC_ST(v2, 0, dst+2*stride);
|
||
|
VEC_ST(v3, 0, dst+3*stride);
|
||
|
|
||
|
dst += 4*stride;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void h264_idct_dc_add_altivec(uint8_t *dst, int16_t *block, int stride)
|
||
|
{
|
||
|
h264_idct_dc_add_internal(dst, block, stride, 4);
|
||
|
}
|
||
|
|
||
|
static void h264_idct8_dc_add_altivec(uint8_t *dst, int16_t *block, int stride)
|
||
|
{
|
||
|
h264_idct_dc_add_internal(dst, block, stride, 8);
|
||
|
}
|
||
|
|
||
|
static void h264_idct_add16_altivec(uint8_t *dst, const int *block_offset,
|
||
|
int16_t *block, int stride,
|
||
|
const uint8_t nnzc[15 * 8])
|
||
|
{
|
||
|
int i;
|
||
|
for(i=0; i<16; i++){
|
||
|
int nnz = nnzc[ scan8[i] ];
|
||
|
if(nnz){
|
||
|
if(nnz==1 && block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
|
||
|
else h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void h264_idct_add16intra_altivec(uint8_t *dst, const int *block_offset,
|
||
|
int16_t *block, int stride,
|
||
|
const uint8_t nnzc[15 * 8])
|
||
|
{
|
||
|
int i;
|
||
|
for(i=0; i<16; i++){
|
||
|
if(nnzc[ scan8[i] ]) h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride);
|
||
|
else if(block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void h264_idct8_add4_altivec(uint8_t *dst, const int *block_offset,
|
||
|
int16_t *block, int stride,
|
||
|
const uint8_t nnzc[15 * 8])
|
||
|
{
|
||
|
int i;
|
||
|
for(i=0; i<16; i+=4){
|
||
|
int nnz = nnzc[ scan8[i] ];
|
||
|
if(nnz){
|
||
|
if(nnz==1 && block[i*16]) h264_idct8_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
|
||
|
else h264_idct8_add_altivec(dst + block_offset[i], block + i*16, stride);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void h264_idct_add8_altivec(uint8_t **dest, const int *block_offset,
|
||
|
int16_t *block, int stride,
|
||
|
const uint8_t nnzc[15 * 8])
|
||
|
{
|
||
|
int i, j;
|
||
|
for (j = 1; j < 3; j++) {
|
||
|
for(i = j * 16; i < j * 16 + 4; i++){
|
||
|
if(nnzc[ scan8[i] ])
|
||
|
h264_idct_add_altivec(dest[j-1] + block_offset[i], block + i*16, stride);
|
||
|
else if(block[i*16])
|
||
|
h264_idct_dc_add_altivec(dest[j-1] + block_offset[i], block + i*16, stride);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
#define transpose4x16(r0, r1, r2, r3) { \
|
||
|
register vec_u8 r4; \
|
||
|
register vec_u8 r5; \
|
||
|
register vec_u8 r6; \
|
||
|
register vec_u8 r7; \
|
||
|
\
|
||
|
r4 = vec_mergeh(r0, r2); /*0, 2 set 0*/ \
|
||
|
r5 = vec_mergel(r0, r2); /*0, 2 set 1*/ \
|
||
|
r6 = vec_mergeh(r1, r3); /*1, 3 set 0*/ \
|
||
|
r7 = vec_mergel(r1, r3); /*1, 3 set 1*/ \
|
||
|
\
|
||
|
r0 = vec_mergeh(r4, r6); /*all set 0*/ \
|
||
|
r1 = vec_mergel(r4, r6); /*all set 1*/ \
|
||
|
r2 = vec_mergeh(r5, r7); /*all set 2*/ \
|
||
|
r3 = vec_mergel(r5, r7); /*all set 3*/ \
|
||
|
}
|
||
|
|
||
|
static inline void write16x4(uint8_t *dst, int dst_stride,
|
||
|
register vec_u8 r0, register vec_u8 r1,
|
||
|
register vec_u8 r2, register vec_u8 r3) {
|
||
|
DECLARE_ALIGNED(16, unsigned char, result)[64];
|
||
|
uint32_t *src_int = (uint32_t *)result, *dst_int = (uint32_t *)dst;
|
||
|
int int_dst_stride = dst_stride/4;
|
||
|
|
||
|
vec_st(r0, 0, result);
|
||
|
vec_st(r1, 16, result);
|
||
|
vec_st(r2, 32, result);
|
||
|
vec_st(r3, 48, result);
|
||
|
/* FIXME: there has to be a better way!!!! */
|
||
|
*dst_int = *src_int;
|
||
|
*(dst_int+ int_dst_stride) = *(src_int + 1);
|
||
|
*(dst_int+ 2*int_dst_stride) = *(src_int + 2);
|
||
|
*(dst_int+ 3*int_dst_stride) = *(src_int + 3);
|
||
|
*(dst_int+ 4*int_dst_stride) = *(src_int + 4);
|
||
|
*(dst_int+ 5*int_dst_stride) = *(src_int + 5);
|
||
|
*(dst_int+ 6*int_dst_stride) = *(src_int + 6);
|
||
|
*(dst_int+ 7*int_dst_stride) = *(src_int + 7);
|
||
|
*(dst_int+ 8*int_dst_stride) = *(src_int + 8);
|
||
|
*(dst_int+ 9*int_dst_stride) = *(src_int + 9);
|
||
|
*(dst_int+10*int_dst_stride) = *(src_int + 10);
|
||
|
*(dst_int+11*int_dst_stride) = *(src_int + 11);
|
||
|
*(dst_int+12*int_dst_stride) = *(src_int + 12);
|
||
|
*(dst_int+13*int_dst_stride) = *(src_int + 13);
|
||
|
*(dst_int+14*int_dst_stride) = *(src_int + 14);
|
||
|
*(dst_int+15*int_dst_stride) = *(src_int + 15);
|
||
|
}
|
||
|
|
||
|
/** @brief performs a 6x16 transpose of data in src, and stores it to dst
|
||
|
@todo FIXME: see if we can't spare some vec_lvsl() by them factorizing
|
||
|
out of unaligned_load() */
|
||
|
#define readAndTranspose16x6(src, src_stride, r8, r9, r10, r11, r12, r13) {\
|
||
|
register vec_u8 r0 = unaligned_load(0, src); \
|
||
|
register vec_u8 r1 = unaligned_load( src_stride, src); \
|
||
|
register vec_u8 r2 = unaligned_load(2* src_stride, src); \
|
||
|
register vec_u8 r3 = unaligned_load(3* src_stride, src); \
|
||
|
register vec_u8 r4 = unaligned_load(4* src_stride, src); \
|
||
|
register vec_u8 r5 = unaligned_load(5* src_stride, src); \
|
||
|
register vec_u8 r6 = unaligned_load(6* src_stride, src); \
|
||
|
register vec_u8 r7 = unaligned_load(7* src_stride, src); \
|
||
|
register vec_u8 r14 = unaligned_load(14*src_stride, src); \
|
||
|
register vec_u8 r15 = unaligned_load(15*src_stride, src); \
|
||
|
\
|
||
|
r8 = unaligned_load( 8*src_stride, src); \
|
||
|
r9 = unaligned_load( 9*src_stride, src); \
|
||
|
r10 = unaligned_load(10*src_stride, src); \
|
||
|
r11 = unaligned_load(11*src_stride, src); \
|
||
|
r12 = unaligned_load(12*src_stride, src); \
|
||
|
r13 = unaligned_load(13*src_stride, src); \
|
||
|
\
|
||
|
/*Merge first pairs*/ \
|
||
|
r0 = vec_mergeh(r0, r8); /*0, 8*/ \
|
||
|
r1 = vec_mergeh(r1, r9); /*1, 9*/ \
|
||
|
r2 = vec_mergeh(r2, r10); /*2,10*/ \
|
||
|
r3 = vec_mergeh(r3, r11); /*3,11*/ \
|
||
|
r4 = vec_mergeh(r4, r12); /*4,12*/ \
|
||
|
r5 = vec_mergeh(r5, r13); /*5,13*/ \
|
||
|
r6 = vec_mergeh(r6, r14); /*6,14*/ \
|
||
|
r7 = vec_mergeh(r7, r15); /*7,15*/ \
|
||
|
\
|
||
|
/*Merge second pairs*/ \
|
||
|
r8 = vec_mergeh(r0, r4); /*0,4, 8,12 set 0*/ \
|
||
|
r9 = vec_mergel(r0, r4); /*0,4, 8,12 set 1*/ \
|
||
|
r10 = vec_mergeh(r1, r5); /*1,5, 9,13 set 0*/ \
|
||
|
r11 = vec_mergel(r1, r5); /*1,5, 9,13 set 1*/ \
|
||
|
r12 = vec_mergeh(r2, r6); /*2,6,10,14 set 0*/ \
|
||
|
r13 = vec_mergel(r2, r6); /*2,6,10,14 set 1*/ \
|
||
|
r14 = vec_mergeh(r3, r7); /*3,7,11,15 set 0*/ \
|
||
|
r15 = vec_mergel(r3, r7); /*3,7,11,15 set 1*/ \
|
||
|
\
|
||
|
/*Third merge*/ \
|
||
|
r0 = vec_mergeh(r8, r12); /*0,2,4,6,8,10,12,14 set 0*/ \
|
||
|
r1 = vec_mergel(r8, r12); /*0,2,4,6,8,10,12,14 set 1*/ \
|
||
|
r2 = vec_mergeh(r9, r13); /*0,2,4,6,8,10,12,14 set 2*/ \
|
||
|
r4 = vec_mergeh(r10, r14); /*1,3,5,7,9,11,13,15 set 0*/ \
|
||
|
r5 = vec_mergel(r10, r14); /*1,3,5,7,9,11,13,15 set 1*/ \
|
||
|
r6 = vec_mergeh(r11, r15); /*1,3,5,7,9,11,13,15 set 2*/ \
|
||
|
/* Don't need to compute 3 and 7*/ \
|
||
|
\
|
||
|
/*Final merge*/ \
|
||
|
r8 = vec_mergeh(r0, r4); /*all set 0*/ \
|
||
|
r9 = vec_mergel(r0, r4); /*all set 1*/ \
|
||
|
r10 = vec_mergeh(r1, r5); /*all set 2*/ \
|
||
|
r11 = vec_mergel(r1, r5); /*all set 3*/ \
|
||
|
r12 = vec_mergeh(r2, r6); /*all set 4*/ \
|
||
|
r13 = vec_mergel(r2, r6); /*all set 5*/ \
|
||
|
/* Don't need to compute 14 and 15*/ \
|
||
|
\
|
||
|
}
|
||
|
|
||
|
// out: o = |x-y| < a
|
||
|
static inline vec_u8 diff_lt_altivec ( register vec_u8 x,
|
||
|
register vec_u8 y,
|
||
|
register vec_u8 a) {
|
||
|
|
||
|
register vec_u8 diff = vec_subs(x, y);
|
||
|
register vec_u8 diffneg = vec_subs(y, x);
|
||
|
register vec_u8 o = vec_or(diff, diffneg); /* |x-y| */
|
||
|
o = (vec_u8)vec_cmplt(o, a);
|
||
|
return o;
|
||
|
}
|
||
|
|
||
|
static inline vec_u8 h264_deblock_mask ( register vec_u8 p0,
|
||
|
register vec_u8 p1,
|
||
|
register vec_u8 q0,
|
||
|
register vec_u8 q1,
|
||
|
register vec_u8 alpha,
|
||
|
register vec_u8 beta) {
|
||
|
|
||
|
register vec_u8 mask;
|
||
|
register vec_u8 tempmask;
|
||
|
|
||
|
mask = diff_lt_altivec(p0, q0, alpha);
|
||
|
tempmask = diff_lt_altivec(p1, p0, beta);
|
||
|
mask = vec_and(mask, tempmask);
|
||
|
tempmask = diff_lt_altivec(q1, q0, beta);
|
||
|
mask = vec_and(mask, tempmask);
|
||
|
|
||
|
return mask;
|
||
|
}
|
||
|
|
||
|
// out: newp1 = clip((p2 + ((p0 + q0 + 1) >> 1)) >> 1, p1-tc0, p1+tc0)
|
||
|
static inline vec_u8 h264_deblock_q1(register vec_u8 p0,
|
||
|
register vec_u8 p1,
|
||
|
register vec_u8 p2,
|
||
|
register vec_u8 q0,
|
||
|
register vec_u8 tc0) {
|
||
|
|
||
|
register vec_u8 average = vec_avg(p0, q0);
|
||
|
register vec_u8 temp;
|
||
|
register vec_u8 unclipped;
|
||
|
register vec_u8 ones;
|
||
|
register vec_u8 max;
|
||
|
register vec_u8 min;
|
||
|
register vec_u8 newp1;
|
||
|
|
||
|
temp = vec_xor(average, p2);
|
||
|
average = vec_avg(average, p2); /*avg(p2, avg(p0, q0)) */
|
||
|
ones = vec_splat_u8(1);
|
||
|
temp = vec_and(temp, ones); /*(p2^avg(p0, q0)) & 1 */
|
||
|
unclipped = vec_subs(average, temp); /*(p2+((p0+q0+1)>>1))>>1 */
|
||
|
max = vec_adds(p1, tc0);
|
||
|
min = vec_subs(p1, tc0);
|
||
|
newp1 = vec_max(min, unclipped);
|
||
|
newp1 = vec_min(max, newp1);
|
||
|
return newp1;
|
||
|
}
|
||
|
|
||
|
#define h264_deblock_p0_q0(p0, p1, q0, q1, tc0masked) { \
|
||
|
\
|
||
|
const vec_u8 A0v = vec_sl(vec_splat_u8(10), vec_splat_u8(4)); \
|
||
|
\
|
||
|
register vec_u8 pq0bit = vec_xor(p0,q0); \
|
||
|
register vec_u8 q1minus; \
|
||
|
register vec_u8 p0minus; \
|
||
|
register vec_u8 stage1; \
|
||
|
register vec_u8 stage2; \
|
||
|
register vec_u8 vec160; \
|
||
|
register vec_u8 delta; \
|
||
|
register vec_u8 deltaneg; \
|
||
|
\
|
||
|
q1minus = vec_nor(q1, q1); /* 255 - q1 */ \
|
||
|
stage1 = vec_avg(p1, q1minus); /* (p1 - q1 + 256)>>1 */ \
|
||
|
stage2 = vec_sr(stage1, vec_splat_u8(1)); /* (p1 - q1 + 256)>>2 = 64 + (p1 - q1) >> 2 */ \
|
||
|
p0minus = vec_nor(p0, p0); /* 255 - p0 */ \
|
||
|
stage1 = vec_avg(q0, p0minus); /* (q0 - p0 + 256)>>1 */ \
|
||
|
pq0bit = vec_and(pq0bit, vec_splat_u8(1)); \
|
||
|
stage2 = vec_avg(stage2, pq0bit); /* 32 + ((q0 - p0)&1 + (p1 - q1) >> 2 + 1) >> 1 */ \
|
||
|
stage2 = vec_adds(stage2, stage1); /* 160 + ((p0 - q0) + (p1 - q1) >> 2 + 1) >> 1 */ \
|
||
|
vec160 = vec_ld(0, &A0v); \
|
||
|
deltaneg = vec_subs(vec160, stage2); /* -d */ \
|
||
|
delta = vec_subs(stage2, vec160); /* d */ \
|
||
|
deltaneg = vec_min(tc0masked, deltaneg); \
|
||
|
delta = vec_min(tc0masked, delta); \
|
||
|
p0 = vec_subs(p0, deltaneg); \
|
||
|
q0 = vec_subs(q0, delta); \
|
||
|
p0 = vec_adds(p0, delta); \
|
||
|
q0 = vec_adds(q0, deltaneg); \
|
||
|
}
|
||
|
|
||
|
#define h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0) { \
|
||
|
DECLARE_ALIGNED(16, unsigned char, temp)[16]; \
|
||
|
register vec_u8 alphavec; \
|
||
|
register vec_u8 betavec; \
|
||
|
register vec_u8 mask; \
|
||
|
register vec_u8 p1mask; \
|
||
|
register vec_u8 q1mask; \
|
||
|
register vector signed char tc0vec; \
|
||
|
register vec_u8 finaltc0; \
|
||
|
register vec_u8 tc0masked; \
|
||
|
register vec_u8 newp1; \
|
||
|
register vec_u8 newq1; \
|
||
|
\
|
||
|
temp[0] = alpha; \
|
||
|
temp[1] = beta; \
|
||
|
alphavec = vec_ld(0, temp); \
|
||
|
betavec = vec_splat(alphavec, 0x1); \
|
||
|
alphavec = vec_splat(alphavec, 0x0); \
|
||
|
mask = h264_deblock_mask(p0, p1, q0, q1, alphavec, betavec); /*if in block */ \
|
||
|
\
|
||
|
AV_COPY32(temp, tc0); \
|
||
|
tc0vec = vec_ld(0, (signed char*)temp); \
|
||
|
tc0vec = vec_mergeh(tc0vec, tc0vec); \
|
||
|
tc0vec = vec_mergeh(tc0vec, tc0vec); \
|
||
|
mask = vec_and(mask, vec_cmpgt(tc0vec, vec_splat_s8(-1))); /* if tc0[i] >= 0 */ \
|
||
|
finaltc0 = vec_and((vec_u8)tc0vec, mask); /* tc = tc0 */ \
|
||
|
\
|
||
|
p1mask = diff_lt_altivec(p2, p0, betavec); \
|
||
|
p1mask = vec_and(p1mask, mask); /* if ( |p2 - p0| < beta) */ \
|
||
|
tc0masked = vec_and(p1mask, (vec_u8)tc0vec); \
|
||
|
finaltc0 = vec_sub(finaltc0, p1mask); /* tc++ */ \
|
||
|
newp1 = h264_deblock_q1(p0, p1, p2, q0, tc0masked); \
|
||
|
/*end if*/ \
|
||
|
\
|
||
|
q1mask = diff_lt_altivec(q2, q0, betavec); \
|
||
|
q1mask = vec_and(q1mask, mask); /* if ( |q2 - q0| < beta ) */\
|
||
|
tc0masked = vec_and(q1mask, (vec_u8)tc0vec); \
|
||
|
finaltc0 = vec_sub(finaltc0, q1mask); /* tc++ */ \
|
||
|
newq1 = h264_deblock_q1(p0, q1, q2, q0, tc0masked); \
|
||
|
/*end if*/ \
|
||
|
\
|
||
|
h264_deblock_p0_q0(p0, p1, q0, q1, finaltc0); \
|
||
|
p1 = newp1; \
|
||
|
q1 = newq1; \
|
||
|
}
|
||
|
|
||
|
static void h264_v_loop_filter_luma_altivec(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int8_t *tc0) {
|
||
|
|
||
|
if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) >= 0) {
|
||
|
register vec_u8 p2 = vec_ld(-3*stride, pix);
|
||
|
register vec_u8 p1 = vec_ld(-2*stride, pix);
|
||
|
register vec_u8 p0 = vec_ld(-1*stride, pix);
|
||
|
register vec_u8 q0 = vec_ld(0, pix);
|
||
|
register vec_u8 q1 = vec_ld(stride, pix);
|
||
|
register vec_u8 q2 = vec_ld(2*stride, pix);
|
||
|
h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0);
|
||
|
vec_st(p1, -2*stride, pix);
|
||
|
vec_st(p0, -1*stride, pix);
|
||
|
vec_st(q0, 0, pix);
|
||
|
vec_st(q1, stride, pix);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void h264_h_loop_filter_luma_altivec(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int8_t *tc0) {
|
||
|
|
||
|
register vec_u8 line0, line1, line2, line3, line4, line5;
|
||
|
if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) < 0)
|
||
|
return;
|
||
|
readAndTranspose16x6(pix-3, stride, line0, line1, line2, line3, line4, line5);
|
||
|
h264_loop_filter_luma_altivec(line0, line1, line2, line3, line4, line5, alpha, beta, tc0);
|
||
|
transpose4x16(line1, line2, line3, line4);
|
||
|
write16x4(pix-2, stride, line1, line2, line3, line4);
|
||
|
}
|
||
|
|
||
|
static av_always_inline
|
||
|
void weight_h264_W_altivec(uint8_t *block, int stride, int height,
|
||
|
int log2_denom, int weight, int offset, int w)
|
||
|
{
|
||
|
int y, aligned;
|
||
|
vec_u8 vblock;
|
||
|
vec_s16 vtemp, vweight, voffset, v0, v1;
|
||
|
vec_u16 vlog2_denom;
|
||
|
DECLARE_ALIGNED(16, int32_t, temp)[4];
|
||
|
LOAD_ZERO;
|
||
|
|
||
|
offset <<= log2_denom;
|
||
|
if(log2_denom) offset += 1<<(log2_denom-1);
|
||
|
temp[0] = log2_denom;
|
||
|
temp[1] = weight;
|
||
|
temp[2] = offset;
|
||
|
|
||
|
vtemp = (vec_s16)vec_ld(0, temp);
|
||
|
#if !HAVE_BIGENDIAN
|
||
|
vtemp =(vec_s16)vec_perm(vtemp, vtemp, vcswapi2s(0,1,2,3));
|
||
|
#endif
|
||
|
vlog2_denom = (vec_u16)vec_splat(vtemp, 1);
|
||
|
vweight = vec_splat(vtemp, 3);
|
||
|
voffset = vec_splat(vtemp, 5);
|
||
|
aligned = !((unsigned long)block & 0xf);
|
||
|
|
||
|
for (y = 0; y < height; y++) {
|
||
|
vblock = vec_ld(0, block);
|
||
|
|
||
|
v0 = (vec_s16)VEC_MERGEH(zero_u8v, vblock);
|
||
|
v1 = (vec_s16)VEC_MERGEL(zero_u8v, vblock);
|
||
|
|
||
|
if (w == 16 || aligned) {
|
||
|
v0 = vec_mladd(v0, vweight, zero_s16v);
|
||
|
v0 = vec_adds(v0, voffset);
|
||
|
v0 = vec_sra(v0, vlog2_denom);
|
||
|
}
|
||
|
if (w == 16 || !aligned) {
|
||
|
v1 = vec_mladd(v1, vweight, zero_s16v);
|
||
|
v1 = vec_adds(v1, voffset);
|
||
|
v1 = vec_sra(v1, vlog2_denom);
|
||
|
}
|
||
|
vblock = vec_packsu(v0, v1);
|
||
|
vec_st(vblock, 0, block);
|
||
|
|
||
|
block += stride;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static av_always_inline
|
||
|
void biweight_h264_W_altivec(uint8_t *dst, uint8_t *src, int stride, int height,
|
||
|
int log2_denom, int weightd, int weights, int offset, int w)
|
||
|
{
|
||
|
int y, dst_aligned, src_aligned;
|
||
|
vec_u8 vsrc, vdst;
|
||
|
vec_s16 vtemp, vweights, vweightd, voffset, v0, v1, v2, v3;
|
||
|
vec_u16 vlog2_denom;
|
||
|
DECLARE_ALIGNED(16, int32_t, temp)[4];
|
||
|
LOAD_ZERO;
|
||
|
|
||
|
offset = ((offset + 1) | 1) << log2_denom;
|
||
|
temp[0] = log2_denom+1;
|
||
|
temp[1] = weights;
|
||
|
temp[2] = weightd;
|
||
|
temp[3] = offset;
|
||
|
|
||
|
vtemp = (vec_s16)vec_ld(0, temp);
|
||
|
#if !HAVE_BIGENDIAN
|
||
|
vtemp =(vec_s16)vec_perm(vtemp, vtemp, vcswapi2s(0,1,2,3));
|
||
|
#endif
|
||
|
vlog2_denom = (vec_u16)vec_splat(vtemp, 1);
|
||
|
vweights = vec_splat(vtemp, 3);
|
||
|
vweightd = vec_splat(vtemp, 5);
|
||
|
voffset = vec_splat(vtemp, 7);
|
||
|
dst_aligned = !((unsigned long)dst & 0xf);
|
||
|
src_aligned = !((unsigned long)src & 0xf);
|
||
|
|
||
|
for (y = 0; y < height; y++) {
|
||
|
vdst = vec_ld(0, dst);
|
||
|
vsrc = vec_ld(0, src);
|
||
|
|
||
|
v0 = (vec_s16)VEC_MERGEH(zero_u8v, vdst);
|
||
|
v1 = (vec_s16)VEC_MERGEL(zero_u8v, vdst);
|
||
|
v2 = (vec_s16)VEC_MERGEH(zero_u8v, vsrc);
|
||
|
v3 = (vec_s16)VEC_MERGEL(zero_u8v, vsrc);
|
||
|
|
||
|
if (w == 8) {
|
||
|
if (src_aligned)
|
||
|
v3 = v2;
|
||
|
else
|
||
|
v2 = v3;
|
||
|
}
|
||
|
|
||
|
if (w == 16 || dst_aligned) {
|
||
|
v0 = vec_mladd(v0, vweightd, zero_s16v);
|
||
|
v2 = vec_mladd(v2, vweights, zero_s16v);
|
||
|
|
||
|
v0 = vec_adds(v0, voffset);
|
||
|
v0 = vec_adds(v0, v2);
|
||
|
v0 = vec_sra(v0, vlog2_denom);
|
||
|
}
|
||
|
if (w == 16 || !dst_aligned) {
|
||
|
v1 = vec_mladd(v1, vweightd, zero_s16v);
|
||
|
v3 = vec_mladd(v3, vweights, zero_s16v);
|
||
|
|
||
|
v1 = vec_adds(v1, voffset);
|
||
|
v1 = vec_adds(v1, v3);
|
||
|
v1 = vec_sra(v1, vlog2_denom);
|
||
|
}
|
||
|
vdst = vec_packsu(v0, v1);
|
||
|
vec_st(vdst, 0, dst);
|
||
|
|
||
|
dst += stride;
|
||
|
src += stride;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
#define H264_WEIGHT(W) \
|
||
|
static void weight_h264_pixels ## W ## _altivec(uint8_t *block, ptrdiff_t stride, int height, \
|
||
|
int log2_denom, int weight, int offset) \
|
||
|
{ \
|
||
|
weight_h264_W_altivec(block, stride, height, log2_denom, weight, offset, W); \
|
||
|
}\
|
||
|
static void biweight_h264_pixels ## W ## _altivec(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int height, \
|
||
|
int log2_denom, int weightd, int weights, int offset) \
|
||
|
{ \
|
||
|
biweight_h264_W_altivec(dst, src, stride, height, log2_denom, weightd, weights, offset, W); \
|
||
|
}
|
||
|
|
||
|
H264_WEIGHT(16)
|
||
|
H264_WEIGHT( 8)
|
||
|
#endif /* HAVE_ALTIVEC */
|
||
|
|
||
|
av_cold void ff_h264dsp_init_ppc(H264DSPContext *c, const int bit_depth,
|
||
|
const int chroma_format_idc)
|
||
|
{
|
||
|
#if HAVE_ALTIVEC
|
||
|
if (!PPC_ALTIVEC(av_get_cpu_flags()))
|
||
|
return;
|
||
|
|
||
|
if (bit_depth == 8) {
|
||
|
c->h264_idct_add = h264_idct_add_altivec;
|
||
|
if (chroma_format_idc <= 1)
|
||
|
c->h264_idct_add8 = h264_idct_add8_altivec;
|
||
|
c->h264_idct_add16 = h264_idct_add16_altivec;
|
||
|
c->h264_idct_add16intra = h264_idct_add16intra_altivec;
|
||
|
c->h264_idct_dc_add= h264_idct_dc_add_altivec;
|
||
|
c->h264_idct8_dc_add = h264_idct8_dc_add_altivec;
|
||
|
c->h264_idct8_add = h264_idct8_add_altivec;
|
||
|
c->h264_idct8_add4 = h264_idct8_add4_altivec;
|
||
|
c->h264_v_loop_filter_luma= h264_v_loop_filter_luma_altivec;
|
||
|
c->h264_h_loop_filter_luma= h264_h_loop_filter_luma_altivec;
|
||
|
|
||
|
c->weight_h264_pixels_tab[0] = weight_h264_pixels16_altivec;
|
||
|
c->weight_h264_pixels_tab[1] = weight_h264_pixels8_altivec;
|
||
|
c->biweight_h264_pixels_tab[0] = biweight_h264_pixels16_altivec;
|
||
|
c->biweight_h264_pixels_tab[1] = biweight_h264_pixels8_altivec;
|
||
|
}
|
||
|
#endif /* HAVE_ALTIVEC */
|
||
|
}
|