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ffmpeg / libavcodec / ppc / h264_altivec.c @ a6b4448c

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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 "libavcodec/dsputil.h"
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#include "libavcodec/h264data.h"
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#include "gcc_fixes.h"
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#include "dsputil_ppc.h"
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#include "dsputil_altivec.h"
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#include "util_altivec.h"
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#include "types_altivec.h"
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#define PUT_OP_U8_ALTIVEC(d, s, dst) d = s
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#define AVG_OP_U8_ALTIVEC(d, s, dst) d = vec_avg(dst, s)
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#define OP_U8_ALTIVEC                          PUT_OP_U8_ALTIVEC
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#define PREFIX_h264_chroma_mc8_altivec         put_h264_chroma_mc8_altivec
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#define PREFIX_h264_chroma_mc8_num             altivec_put_h264_chroma_mc8_num
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#define PREFIX_h264_qpel16_h_lowpass_altivec   put_h264_qpel16_h_lowpass_altivec
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#define PREFIX_h264_qpel16_h_lowpass_num       altivec_put_h264_qpel16_h_lowpass_num
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#define PREFIX_h264_qpel16_v_lowpass_altivec   put_h264_qpel16_v_lowpass_altivec
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#define PREFIX_h264_qpel16_v_lowpass_num       altivec_put_h264_qpel16_v_lowpass_num
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#define PREFIX_h264_qpel16_hv_lowpass_altivec  put_h264_qpel16_hv_lowpass_altivec
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#define PREFIX_h264_qpel16_hv_lowpass_num      altivec_put_h264_qpel16_hv_lowpass_num
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#include "h264_template_altivec.c"
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#undef OP_U8_ALTIVEC
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#undef PREFIX_h264_chroma_mc8_altivec
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#undef PREFIX_h264_chroma_mc8_num
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#undef PREFIX_h264_qpel16_h_lowpass_altivec
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#undef PREFIX_h264_qpel16_h_lowpass_num
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#undef PREFIX_h264_qpel16_v_lowpass_altivec
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#undef PREFIX_h264_qpel16_v_lowpass_num
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#undef PREFIX_h264_qpel16_hv_lowpass_altivec
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#undef PREFIX_h264_qpel16_hv_lowpass_num
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#define OP_U8_ALTIVEC                          AVG_OP_U8_ALTIVEC
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#define PREFIX_h264_chroma_mc8_altivec         avg_h264_chroma_mc8_altivec
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#define PREFIX_h264_chroma_mc8_num             altivec_avg_h264_chroma_mc8_num
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#define PREFIX_h264_qpel16_h_lowpass_altivec   avg_h264_qpel16_h_lowpass_altivec
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#define PREFIX_h264_qpel16_h_lowpass_num       altivec_avg_h264_qpel16_h_lowpass_num
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#define PREFIX_h264_qpel16_v_lowpass_altivec   avg_h264_qpel16_v_lowpass_altivec
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#define PREFIX_h264_qpel16_v_lowpass_num       altivec_avg_h264_qpel16_v_lowpass_num
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#define PREFIX_h264_qpel16_hv_lowpass_altivec  avg_h264_qpel16_hv_lowpass_altivec
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#define PREFIX_h264_qpel16_hv_lowpass_num      altivec_avg_h264_qpel16_hv_lowpass_num
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#include "h264_template_altivec.c"
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#undef OP_U8_ALTIVEC
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#undef PREFIX_h264_chroma_mc8_altivec
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#undef PREFIX_h264_chroma_mc8_num
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#undef PREFIX_h264_qpel16_h_lowpass_altivec
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#undef PREFIX_h264_qpel16_h_lowpass_num
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#undef PREFIX_h264_qpel16_v_lowpass_altivec
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#undef PREFIX_h264_qpel16_v_lowpass_num
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#undef PREFIX_h264_qpel16_hv_lowpass_altivec
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#undef PREFIX_h264_qpel16_hv_lowpass_num
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#define H264_MC(OPNAME, SIZE, CODETYPE) \
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static void OPNAME ## h264_qpel ## SIZE ## _mc00_ ## CODETYPE (uint8_t *dst, uint8_t *src, int stride){\
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    OPNAME ## pixels ## SIZE ## _ ## CODETYPE(dst, src, stride, SIZE);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc10_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){ \
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    DECLARE_ALIGNED_16(uint8_t, half[SIZE*SIZE]);\
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    put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(half, src, SIZE, stride);\
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    OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src, half, stride, stride, SIZE);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc20_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    OPNAME ## h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(dst, src, stride, stride);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc30_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    DECLARE_ALIGNED_16(uint8_t, half[SIZE*SIZE]);\
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    put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(half, src, SIZE, stride);\
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    OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src+1, half, stride, stride, SIZE);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc01_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    DECLARE_ALIGNED_16(uint8_t, half[SIZE*SIZE]);\
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    put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(half, src, SIZE, stride);\
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    OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src, half, stride, stride, SIZE);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc02_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    OPNAME ## h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(dst, src, stride, stride);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc03_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    DECLARE_ALIGNED_16(uint8_t, half[SIZE*SIZE]);\
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    put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(half, src, SIZE, stride);\
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    OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src+stride, half, stride, stride, SIZE);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc11_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\
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    DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\
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    put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src, SIZE, stride);\
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    put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src, SIZE, stride);\
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    OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc31_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\
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    DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\
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    put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src, SIZE, stride);\
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    put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src+1, SIZE, stride);\
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    OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc13_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\
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    DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\
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    put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src + stride, SIZE, stride);\
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    put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src, SIZE, stride);\
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    OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc33_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\
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    DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\
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    put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src + stride, SIZE, stride);\
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    put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src+1, SIZE, stride);\
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    OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc22_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\
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    OPNAME ## h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(dst, tmp, src, stride, SIZE, stride);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc21_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\
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    DECLARE_ALIGNED_16(uint8_t, halfHV[SIZE*SIZE]);\
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    DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\
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    put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src, SIZE, stride);\
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    put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\
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    OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfHV, stride, SIZE, SIZE);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc23_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\
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    DECLARE_ALIGNED_16(uint8_t, halfHV[SIZE*SIZE]);\
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    DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\
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    put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src + stride, SIZE, stride);\
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    put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\
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    OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfHV, stride, SIZE, SIZE);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc12_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\
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    DECLARE_ALIGNED_16(uint8_t, halfHV[SIZE*SIZE]);\
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    DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\
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    put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src, SIZE, stride);\
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    put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\
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    OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfV, halfHV, stride, SIZE, SIZE);\
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}\
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\
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static void OPNAME ## h264_qpel ## SIZE ## _mc32_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
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    DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\
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    DECLARE_ALIGNED_16(uint8_t, halfHV[SIZE*SIZE]);\
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    DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\
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    put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src+1, SIZE, stride);\
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    put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\
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    OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfV, halfHV, stride, SIZE, SIZE);\
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}\
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/* this code assume that stride % 16 == 0 */
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void put_no_rnd_h264_chroma_mc8_altivec(uint8_t * dst, uint8_t * src, int stride, int h, int x, int y) {
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   DECLARE_ALIGNED_16(signed int, ABCD[4]) =
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                        {((8 - x) * (8 - y)),
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                             ((x) * (8 - y)),
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                         ((8 - x) * (y)),
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                             ((x) * (y))};
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    register int i;
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    vec_u8 fperm;
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    const vec_s32 vABCD = vec_ld(0, ABCD);
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    const vec_s16 vA = vec_splat((vec_s16)vABCD, 1);
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    const vec_s16 vB = vec_splat((vec_s16)vABCD, 3);
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    const vec_s16 vC = vec_splat((vec_s16)vABCD, 5);
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    const vec_s16 vD = vec_splat((vec_s16)vABCD, 7);
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    LOAD_ZERO;
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    const vec_s16 v28ss = vec_sub(vec_sl(vec_splat_s16(1),vec_splat_u16(5)),vec_splat_s16(4));
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    const vec_u16 v6us  = vec_splat_u16(6);
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    register int loadSecond     = (((unsigned long)src) % 16) <= 7 ? 0 : 1;
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    register int reallyBadAlign = (((unsigned long)src) % 16) == 15 ? 1 : 0;
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    vec_u8 vsrcAuc, vsrcBuc, vsrcperm0, vsrcperm1;
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    vec_u8 vsrc0uc, vsrc1uc;
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    vec_s16 vsrc0ssH, vsrc1ssH;
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    vec_u8 vsrcCuc, vsrc2uc, vsrc3uc;
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    vec_s16 vsrc2ssH, vsrc3ssH, psum;
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    vec_u8 vdst, ppsum, fsum;
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    if (((unsigned long)dst) % 16 == 0) {
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        fperm = (vec_u8){0x10, 0x11, 0x12, 0x13,
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                           0x14, 0x15, 0x16, 0x17,
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                           0x08, 0x09, 0x0A, 0x0B,
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                           0x0C, 0x0D, 0x0E, 0x0F};
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    } else {
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        fperm = (vec_u8){0x00, 0x01, 0x02, 0x03,
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                           0x04, 0x05, 0x06, 0x07,
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                           0x18, 0x19, 0x1A, 0x1B,
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                           0x1C, 0x1D, 0x1E, 0x1F};
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    }
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    vsrcAuc = vec_ld(0, src);
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    if (loadSecond)
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        vsrcBuc = vec_ld(16, src);
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    vsrcperm0 = vec_lvsl(0, src);
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    vsrcperm1 = vec_lvsl(1, src);
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    vsrc0uc = vec_perm(vsrcAuc, vsrcBuc, vsrcperm0);
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    if (reallyBadAlign)
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        vsrc1uc = vsrcBuc;
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    else
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        vsrc1uc = vec_perm(vsrcAuc, vsrcBuc, vsrcperm1);
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    vsrc0ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc0uc);
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    vsrc1ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc1uc);
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    if (!loadSecond) {// -> !reallyBadAlign
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        for (i = 0 ; i < h ; i++) {
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            vsrcCuc = vec_ld(stride + 0, src);
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            vsrc2uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm0);
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            vsrc3uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm1);
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            vsrc2ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc2uc);
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            vsrc3ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc3uc);
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            psum = vec_mladd(vA, vsrc0ssH, vec_splat_s16(0));
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            psum = vec_mladd(vB, vsrc1ssH, psum);
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            psum = vec_mladd(vC, vsrc2ssH, psum);
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            psum = vec_mladd(vD, vsrc3ssH, psum);
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            psum = vec_add(v28ss, psum);
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            psum = vec_sra(psum, v6us);
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            vdst = vec_ld(0, dst);
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            ppsum = (vec_u8)vec_packsu(psum, psum);
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            fsum = vec_perm(vdst, ppsum, fperm);
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            vec_st(fsum, 0, dst);
263

    
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            vsrc0ssH = vsrc2ssH;
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            vsrc1ssH = vsrc3ssH;
266

    
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            dst += stride;
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            src += stride;
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        }
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    } else {
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        vec_u8 vsrcDuc;
272
        for (i = 0 ; i < h ; i++) {
273
            vsrcCuc = vec_ld(stride + 0, src);
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            vsrcDuc = vec_ld(stride + 16, src);
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            vsrc2uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm0);
277
            if (reallyBadAlign)
278
                vsrc3uc = vsrcDuc;
279
            else
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                vsrc3uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm1);
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            vsrc2ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc2uc);
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            vsrc3ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc3uc);
284

    
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            psum = vec_mladd(vA, vsrc0ssH, vec_splat_s16(0));
286
            psum = vec_mladd(vB, vsrc1ssH, psum);
287
            psum = vec_mladd(vC, vsrc2ssH, psum);
288
            psum = vec_mladd(vD, vsrc3ssH, psum);
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            psum = vec_add(v28ss, psum);
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            psum = vec_sr(psum, v6us);
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            vdst = vec_ld(0, dst);
293
            ppsum = (vec_u8)vec_pack(psum, psum);
294
            fsum = vec_perm(vdst, ppsum, fperm);
295

    
296
            vec_st(fsum, 0, dst);
297

    
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            vsrc0ssH = vsrc2ssH;
299
            vsrc1ssH = vsrc3ssH;
300

    
301
            dst += stride;
302
            src += stride;
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        }
304
    }
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}
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307
static inline void put_pixels16_l2_altivec( uint8_t * dst, const uint8_t * src1,
308
                                    const uint8_t * src2, int dst_stride,
309
                                    int src_stride1, int h)
310
{
311
    int i;
312
    vec_u8 a, b, d, tmp1, tmp2, mask, mask_, edges, align;
313

    
314
    mask_ = vec_lvsl(0, src2);
315

    
316
    for (i = 0; i < h; i++) {
317

    
318
        tmp1 = vec_ld(i * src_stride1, src1);
319
        mask = vec_lvsl(i * src_stride1, src1);
320
        tmp2 = vec_ld(i * src_stride1 + 15, src1);
321

    
322
        a = vec_perm(tmp1, tmp2, mask);
323

    
324
        tmp1 = vec_ld(i * 16, src2);
325
        tmp2 = vec_ld(i * 16 + 15, src2);
326

    
327
        b = vec_perm(tmp1, tmp2, mask_);
328

    
329
        tmp1 = vec_ld(0, dst);
330
        mask = vec_lvsl(0, dst);
331
        tmp2 = vec_ld(15, dst);
332

    
333
        d = vec_avg(a, b);
334

    
335
        edges = vec_perm(tmp2, tmp1, mask);
336

    
337
        align = vec_lvsr(0, dst);
338

    
339
        tmp2 = vec_perm(d, edges, align);
340
        tmp1 = vec_perm(edges, d, align);
341

    
342
        vec_st(tmp2, 15, dst);
343
        vec_st(tmp1, 0 , dst);
344

    
345
        dst += dst_stride;
346
    }
347
}
348

    
349
static inline void avg_pixels16_l2_altivec( uint8_t * dst, const uint8_t * src1,
350
                                    const uint8_t * src2, int dst_stride,
351
                                    int src_stride1, int h)
352
{
353
    int i;
354
    vec_u8 a, b, d, tmp1, tmp2, mask, mask_, edges, align;
355

    
356
    mask_ = vec_lvsl(0, src2);
357

    
358
    for (i = 0; i < h; i++) {
359

    
360
        tmp1 = vec_ld(i * src_stride1, src1);
361
        mask = vec_lvsl(i * src_stride1, src1);
362
        tmp2 = vec_ld(i * src_stride1 + 15, src1);
363

    
364
        a = vec_perm(tmp1, tmp2, mask);
365

    
366
        tmp1 = vec_ld(i * 16, src2);
367
        tmp2 = vec_ld(i * 16 + 15, src2);
368

    
369
        b = vec_perm(tmp1, tmp2, mask_);
370

    
371
        tmp1 = vec_ld(0, dst);
372
        mask = vec_lvsl(0, dst);
373
        tmp2 = vec_ld(15, dst);
374

    
375
        d = vec_avg(vec_perm(tmp1, tmp2, mask), vec_avg(a, b));
376

    
377
        edges = vec_perm(tmp2, tmp1, mask);
378

    
379
        align = vec_lvsr(0, dst);
380

    
381
        tmp2 = vec_perm(d, edges, align);
382
        tmp1 = vec_perm(edges, d, align);
383

    
384
        vec_st(tmp2, 15, dst);
385
        vec_st(tmp1, 0 , dst);
386

    
387
        dst += dst_stride;
388
    }
389
}
390

    
391
/* Implemented but could be faster
392
#define put_pixels16_l2_altivec(d,s1,s2,ds,s1s,h) put_pixels16_l2(d,s1,s2,ds,s1s,16,h)
393
#define avg_pixels16_l2_altivec(d,s1,s2,ds,s1s,h) avg_pixels16_l2(d,s1,s2,ds,s1s,16,h)
394
 */
395

    
396
H264_MC(put_, 16, altivec)
397
H264_MC(avg_, 16, altivec)
398

    
399

    
400
/****************************************************************************
401
 * IDCT transform:
402
 ****************************************************************************/
403

    
404
#define VEC_1D_DCT(vb0,vb1,vb2,vb3,va0,va1,va2,va3)               \
405
    /* 1st stage */                                               \
406
    vz0 = vec_add(vb0,vb2);       /* temp[0] = Y[0] + Y[2] */     \
407
    vz1 = vec_sub(vb0,vb2);       /* temp[1] = Y[0] - Y[2] */     \
408
    vz2 = vec_sra(vb1,vec_splat_u16(1));                          \
409
    vz2 = vec_sub(vz2,vb3);       /* temp[2] = Y[1].1/2 - Y[3] */ \
410
    vz3 = vec_sra(vb3,vec_splat_u16(1));                          \
411
    vz3 = vec_add(vb1,vz3);       /* temp[3] = Y[1] + Y[3].1/2 */ \
412
    /* 2nd stage: output */                                       \
413
    va0 = vec_add(vz0,vz3);       /* x[0] = temp[0] + temp[3] */  \
414
    va1 = vec_add(vz1,vz2);       /* x[1] = temp[1] + temp[2] */  \
415
    va2 = vec_sub(vz1,vz2);       /* x[2] = temp[1] - temp[2] */  \
416
    va3 = vec_sub(vz0,vz3)        /* x[3] = temp[0] - temp[3] */
417

    
418
#define VEC_TRANSPOSE_4(a0,a1,a2,a3,b0,b1,b2,b3) \
419
    b0 = vec_mergeh( a0, a0 ); \
420
    b1 = vec_mergeh( a1, a0 ); \
421
    b2 = vec_mergeh( a2, a0 ); \
422
    b3 = vec_mergeh( a3, a0 ); \
423
    a0 = vec_mergeh( b0, b2 ); \
424
    a1 = vec_mergel( b0, b2 ); \
425
    a2 = vec_mergeh( b1, b3 ); \
426
    a3 = vec_mergel( b1, b3 ); \
427
    b0 = vec_mergeh( a0, a2 ); \
428
    b1 = vec_mergel( a0, a2 ); \
429
    b2 = vec_mergeh( a1, a3 ); \
430
    b3 = vec_mergel( a1, a3 )
431

    
432
#define VEC_LOAD_U8_ADD_S16_STORE_U8(va)                      \
433
    vdst_orig = vec_ld(0, dst);                               \
434
    vdst = vec_perm(vdst_orig, zero_u8v, vdst_mask);          \
435
    vdst_ss = (vec_s16) vec_mergeh(zero_u8v, vdst);         \
436
    va = vec_add(va, vdst_ss);                                \
437
    va_u8 = vec_packsu(va, zero_s16v);                        \
438
    va_u32 = vec_splat((vec_u32)va_u8, 0);                  \
439
    vec_ste(va_u32, element, (uint32_t*)dst);
440

    
441
static void ff_h264_idct_add_altivec(uint8_t *dst, DCTELEM *block, int stride)
442
{
443
    vec_s16 va0, va1, va2, va3;
444
    vec_s16 vz0, vz1, vz2, vz3;
445
    vec_s16 vtmp0, vtmp1, vtmp2, vtmp3;
446
    vec_u8 va_u8;
447
    vec_u32 va_u32;
448
    vec_s16 vdst_ss;
449
    const vec_u16 v6us = vec_splat_u16(6);
450
    vec_u8 vdst, vdst_orig;
451
    vec_u8 vdst_mask = vec_lvsl(0, dst);
452
    int element = ((unsigned long)dst & 0xf) >> 2;
453
    LOAD_ZERO;
454

    
455
    block[0] += 32;  /* add 32 as a DC-level for rounding */
456

    
457
    vtmp0 = vec_ld(0,block);
458
    vtmp1 = vec_sld(vtmp0, vtmp0, 8);
459
    vtmp2 = vec_ld(16,block);
460
    vtmp3 = vec_sld(vtmp2, vtmp2, 8);
461

    
462
    VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3);
463
    VEC_TRANSPOSE_4(va0,va1,va2,va3,vtmp0,vtmp1,vtmp2,vtmp3);
464
    VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3);
465

    
466
    va0 = vec_sra(va0,v6us);
467
    va1 = vec_sra(va1,v6us);
468
    va2 = vec_sra(va2,v6us);
469
    va3 = vec_sra(va3,v6us);
470

    
471
    VEC_LOAD_U8_ADD_S16_STORE_U8(va0);
472
    dst += stride;
473
    VEC_LOAD_U8_ADD_S16_STORE_U8(va1);
474
    dst += stride;
475
    VEC_LOAD_U8_ADD_S16_STORE_U8(va2);
476
    dst += stride;
477
    VEC_LOAD_U8_ADD_S16_STORE_U8(va3);
478
}
479

    
480
#define IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7,  d0, d1, d2, d3, d4, d5, d6, d7) {\
481
    /*        a0  = SRC(0) + SRC(4); */ \
482
    vec_s16 a0v = vec_add(s0, s4);    \
483
    /*        a2  = SRC(0) - SRC(4); */ \
484
    vec_s16 a2v = vec_sub(s0, s4);    \
485
    /*        a4  =           (SRC(2)>>1) - SRC(6); */ \
486
    vec_s16 a4v = vec_sub(vec_sra(s2, onev), s6);    \
487
    /*        a6  =           (SRC(6)>>1) + SRC(2); */ \
488
    vec_s16 a6v = vec_add(vec_sra(s6, onev), s2);    \
489
    /*        b0  =         a0 + a6; */ \
490
    vec_s16 b0v = vec_add(a0v, a6v);  \
491
    /*        b2  =         a2 + a4; */ \
492
    vec_s16 b2v = vec_add(a2v, a4v);  \
493
    /*        b4  =         a2 - a4; */ \
494
    vec_s16 b4v = vec_sub(a2v, a4v);  \
495
    /*        b6  =         a0 - a6; */ \
496
    vec_s16 b6v = vec_sub(a0v, a6v);  \
497
    /* a1 =  SRC(5) - SRC(3) - SRC(7) - (SRC(7)>>1); */ \
498
    /*        a1 =             (SRC(5)-SRC(3)) -  (SRC(7)  +  (SRC(7)>>1)); */ \
499
    vec_s16 a1v = vec_sub( vec_sub(s5, s3), vec_add(s7, vec_sra(s7, onev)) ); \
500
    /* a3 =  SRC(7) + SRC(1) - SRC(3) - (SRC(3)>>1); */ \
501
    /*        a3 =             (SRC(7)+SRC(1)) -  (SRC(3)  +  (SRC(3)>>1)); */ \
502
    vec_s16 a3v = vec_sub( vec_add(s7, s1), vec_add(s3, vec_sra(s3, onev)) );\
503
    /* a5 =  SRC(7) - SRC(1) + SRC(5) + (SRC(5)>>1); */ \
504
    /*        a5 =             (SRC(7)-SRC(1)) +   SRC(5) +   (SRC(5)>>1); */ \
505
    vec_s16 a5v = vec_add( vec_sub(s7, s1), vec_add(s5, vec_sra(s5, onev)) );\
506
    /*        a7 =                SRC(5)+SRC(3) +  SRC(1) +   (SRC(1)>>1); */ \
507
    vec_s16 a7v = vec_add( vec_add(s5, s3), vec_add(s1, vec_sra(s1, onev)) );\
508
    /*        b1 =                  (a7>>2)  +  a1; */ \
509
    vec_s16 b1v = vec_add( vec_sra(a7v, twov), a1v); \
510
    /*        b3 =          a3 +        (a5>>2); */ \
511
    vec_s16 b3v = vec_add(a3v, vec_sra(a5v, twov)); \
512
    /*        b5 =                  (a3>>2)  -   a5; */ \
513
    vec_s16 b5v = vec_sub( vec_sra(a3v, twov), a5v); \
514
    /*        b7 =           a7 -        (a1>>2); */ \
515
    vec_s16 b7v = vec_sub( a7v, vec_sra(a1v, twov)); \
516
    /* DST(0,    b0 + b7); */ \
517
    d0 = vec_add(b0v, b7v); \
518
    /* DST(1,    b2 + b5); */ \
519
    d1 = vec_add(b2v, b5v); \
520
    /* DST(2,    b4 + b3); */ \
521
    d2 = vec_add(b4v, b3v); \
522
    /* DST(3,    b6 + b1); */ \
523
    d3 = vec_add(b6v, b1v); \
524
    /* DST(4,    b6 - b1); */ \
525
    d4 = vec_sub(b6v, b1v); \
526
    /* DST(5,    b4 - b3); */ \
527
    d5 = vec_sub(b4v, b3v); \
528
    /* DST(6,    b2 - b5); */ \
529
    d6 = vec_sub(b2v, b5v); \
530
    /* DST(7,    b0 - b7); */ \
531
    d7 = vec_sub(b0v, b7v); \
532
}
533

    
534
#define ALTIVEC_STORE_SUM_CLIP(dest, idctv, perm_ldv, perm_stv, sel) { \
535
    /* unaligned load */                                       \
536
    vec_u8 hv = vec_ld( 0, dest );                           \
537
    vec_u8 lv = vec_ld( 7, dest );                           \
538
    vec_u8 dstv   = vec_perm( hv, lv, (vec_u8)perm_ldv );  \
539
    vec_s16 idct_sh6 = vec_sra(idctv, sixv);                 \
540
    vec_u16 dst16 = (vec_u16)vec_mergeh(zero_u8v, dstv);   \
541
    vec_s16 idstsum = vec_adds(idct_sh6, (vec_s16)dst16);  \
542
    vec_u8 idstsum8 = vec_packsu(zero_s16v, idstsum);        \
543
    vec_u8 edgehv;                                           \
544
    /* unaligned store */                                      \
545
    vec_u8 bodyv  = vec_perm( idstsum8, idstsum8, perm_stv );\
546
    vec_u8 edgelv = vec_perm( sel, zero_u8v, perm_stv );     \
547
    lv    = vec_sel( lv, bodyv, edgelv );                      \
548
    vec_st( lv, 7, dest );                                     \
549
    hv    = vec_ld( 0, dest );                                 \
550
    edgehv = vec_perm( zero_u8v, sel, perm_stv );              \
551
    hv    = vec_sel( hv, bodyv, edgehv );                      \
552
    vec_st( hv, 0, dest );                                     \
553
 }
554

    
555
void ff_h264_idct8_add_altivec( uint8_t *dst, DCTELEM *dct, int stride ) {
556
    vec_s16 s0, s1, s2, s3, s4, s5, s6, s7;
557
    vec_s16 d0, d1, d2, d3, d4, d5, d6, d7;
558
    vec_s16 idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7;
559

    
560
    vec_u8 perm_ldv = vec_lvsl(0, dst);
561
    vec_u8 perm_stv = vec_lvsr(8, dst);
562

    
563
    const vec_u16 onev = vec_splat_u16(1);
564
    const vec_u16 twov = vec_splat_u16(2);
565
    const vec_u16 sixv = vec_splat_u16(6);
566

    
567
    const vec_u8 sel = (vec_u8) {0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1};
568
    LOAD_ZERO;
569

    
570
    dct[0] += 32; // rounding for the >>6 at the end
571

    
572
    s0 = vec_ld(0x00, (int16_t*)dct);
573
    s1 = vec_ld(0x10, (int16_t*)dct);
574
    s2 = vec_ld(0x20, (int16_t*)dct);
575
    s3 = vec_ld(0x30, (int16_t*)dct);
576
    s4 = vec_ld(0x40, (int16_t*)dct);
577
    s5 = vec_ld(0x50, (int16_t*)dct);
578
    s6 = vec_ld(0x60, (int16_t*)dct);
579
    s7 = vec_ld(0x70, (int16_t*)dct);
580

    
581
    IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7,
582
                     d0, d1, d2, d3, d4, d5, d6, d7);
583

    
584
    TRANSPOSE8( d0,  d1,  d2,  d3,  d4,  d5,  d6, d7 );
585

    
586
    IDCT8_1D_ALTIVEC(d0,  d1,  d2,  d3,  d4,  d5,  d6, d7,
587
                     idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7);
588

    
589
    ALTIVEC_STORE_SUM_CLIP(&dst[0*stride], idct0, perm_ldv, perm_stv, sel);
590
    ALTIVEC_STORE_SUM_CLIP(&dst[1*stride], idct1, perm_ldv, perm_stv, sel);
591
    ALTIVEC_STORE_SUM_CLIP(&dst[2*stride], idct2, perm_ldv, perm_stv, sel);
592
    ALTIVEC_STORE_SUM_CLIP(&dst[3*stride], idct3, perm_ldv, perm_stv, sel);
593
    ALTIVEC_STORE_SUM_CLIP(&dst[4*stride], idct4, perm_ldv, perm_stv, sel);
594
    ALTIVEC_STORE_SUM_CLIP(&dst[5*stride], idct5, perm_ldv, perm_stv, sel);
595
    ALTIVEC_STORE_SUM_CLIP(&dst[6*stride], idct6, perm_ldv, perm_stv, sel);
596
    ALTIVEC_STORE_SUM_CLIP(&dst[7*stride], idct7, perm_ldv, perm_stv, sel);
597
}
598

    
599
// TODO: implement this in AltiVec
600
static void ff_h264_idct8_dc_add_altivec(uint8_t *dst, DCTELEM *block, int stride) {
601
    int i, j;
602
    uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
603
    int dc = (block[0] + 32) >> 6;
604
    for( j = 0; j < 8; j++ )
605
    {
606
        for( i = 0; i < 8; i++ )
607
            dst[i] = cm[ dst[i] + dc ];
608
        dst += stride;
609
    }
610
}
611

    
612
static void ff_h264_idct8_add4_altivec(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){
613
    int i;
614
    for(i=0; i<16; i+=4){
615
        int nnz = nnzc[ scan8[i] ];
616
        if(nnz){
617
            if(nnz==1 && block[i*16]) ff_h264_idct8_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
618
            else                      ff_h264_idct8_add_altivec   (dst + block_offset[i], block + i*16, stride);
619
        }
620
    }
621
}
622

    
623
#define transpose4x16(r0, r1, r2, r3) {      \
624
    register vec_u8 r4;                    \
625
    register vec_u8 r5;                    \
626
    register vec_u8 r6;                    \
627
    register vec_u8 r7;                    \
628
                                             \
629
    r4 = vec_mergeh(r0, r2);  /*0, 2 set 0*/ \
630
    r5 = vec_mergel(r0, r2);  /*0, 2 set 1*/ \
631
    r6 = vec_mergeh(r1, r3);  /*1, 3 set 0*/ \
632
    r7 = vec_mergel(r1, r3);  /*1, 3 set 1*/ \
633
                                             \
634
    r0 = vec_mergeh(r4, r6);  /*all set 0*/  \
635
    r1 = vec_mergel(r4, r6);  /*all set 1*/  \
636
    r2 = vec_mergeh(r5, r7);  /*all set 2*/  \
637
    r3 = vec_mergel(r5, r7);  /*all set 3*/  \
638
}
639

    
640
static inline void write16x4(uint8_t *dst, int dst_stride,
641
                             register vec_u8 r0, register vec_u8 r1,
642
                             register vec_u8 r2, register vec_u8 r3) {
643
    DECLARE_ALIGNED_16(unsigned char, result[64]);
644
    uint32_t *src_int = (uint32_t *)result, *dst_int = (uint32_t *)dst;
645
    int int_dst_stride = dst_stride/4;
646

    
647
    vec_st(r0, 0, result);
648
    vec_st(r1, 16, result);
649
    vec_st(r2, 32, result);
650
    vec_st(r3, 48, result);
651
    /* FIXME: there has to be a better way!!!! */
652
    *dst_int = *src_int;
653
    *(dst_int+   int_dst_stride) = *(src_int + 1);
654
    *(dst_int+ 2*int_dst_stride) = *(src_int + 2);
655
    *(dst_int+ 3*int_dst_stride) = *(src_int + 3);
656
    *(dst_int+ 4*int_dst_stride) = *(src_int + 4);
657
    *(dst_int+ 5*int_dst_stride) = *(src_int + 5);
658
    *(dst_int+ 6*int_dst_stride) = *(src_int + 6);
659
    *(dst_int+ 7*int_dst_stride) = *(src_int + 7);
660
    *(dst_int+ 8*int_dst_stride) = *(src_int + 8);
661
    *(dst_int+ 9*int_dst_stride) = *(src_int + 9);
662
    *(dst_int+10*int_dst_stride) = *(src_int + 10);
663
    *(dst_int+11*int_dst_stride) = *(src_int + 11);
664
    *(dst_int+12*int_dst_stride) = *(src_int + 12);
665
    *(dst_int+13*int_dst_stride) = *(src_int + 13);
666
    *(dst_int+14*int_dst_stride) = *(src_int + 14);
667
    *(dst_int+15*int_dst_stride) = *(src_int + 15);
668
}
669

    
670
/** \brief performs a 6x16 transpose of data in src, and stores it to dst
671
    \todo FIXME: see if we can't spare some vec_lvsl() by them factorizing
672
    out of unaligned_load() */
673
#define readAndTranspose16x6(src, src_stride, r8, r9, r10, r11, r12, r13) {\
674
    register vec_u8 r0  = unaligned_load(0,             src);            \
675
    register vec_u8 r1  = unaligned_load(   src_stride, src);            \
676
    register vec_u8 r2  = unaligned_load(2* src_stride, src);            \
677
    register vec_u8 r3  = unaligned_load(3* src_stride, src);            \
678
    register vec_u8 r4  = unaligned_load(4* src_stride, src);            \
679
    register vec_u8 r5  = unaligned_load(5* src_stride, src);            \
680
    register vec_u8 r6  = unaligned_load(6* src_stride, src);            \
681
    register vec_u8 r7  = unaligned_load(7* src_stride, src);            \
682
    register vec_u8 r14 = unaligned_load(14*src_stride, src);            \
683
    register vec_u8 r15 = unaligned_load(15*src_stride, src);            \
684
                                                                           \
685
    r8  = unaligned_load( 8*src_stride, src);                              \
686
    r9  = unaligned_load( 9*src_stride, src);                              \
687
    r10 = unaligned_load(10*src_stride, src);                              \
688
    r11 = unaligned_load(11*src_stride, src);                              \
689
    r12 = unaligned_load(12*src_stride, src);                              \
690
    r13 = unaligned_load(13*src_stride, src);                              \
691
                                                                           \
692
    /*Merge first pairs*/                                                  \
693
    r0 = vec_mergeh(r0, r8);    /*0, 8*/                                   \
694
    r1 = vec_mergeh(r1, r9);    /*1, 9*/                                   \
695
    r2 = vec_mergeh(r2, r10);   /*2,10*/                                   \
696
    r3 = vec_mergeh(r3, r11);   /*3,11*/                                   \
697
    r4 = vec_mergeh(r4, r12);   /*4,12*/                                   \
698
    r5 = vec_mergeh(r5, r13);   /*5,13*/                                   \
699
    r6 = vec_mergeh(r6, r14);   /*6,14*/                                   \
700
    r7 = vec_mergeh(r7, r15);   /*7,15*/                                   \
701
                                                                           \
702
    /*Merge second pairs*/                                                 \
703
    r8  = vec_mergeh(r0, r4);   /*0,4, 8,12 set 0*/                        \
704
    r9  = vec_mergel(r0, r4);   /*0,4, 8,12 set 1*/                        \
705
    r10 = vec_mergeh(r1, r5);   /*1,5, 9,13 set 0*/                        \
706
    r11 = vec_mergel(r1, r5);   /*1,5, 9,13 set 1*/                        \
707
    r12 = vec_mergeh(r2, r6);   /*2,6,10,14 set 0*/                        \
708
    r13 = vec_mergel(r2, r6);   /*2,6,10,14 set 1*/                        \
709
    r14 = vec_mergeh(r3, r7);   /*3,7,11,15 set 0*/                        \
710
    r15 = vec_mergel(r3, r7);   /*3,7,11,15 set 1*/                        \
711
                                                                           \
712
    /*Third merge*/                                                        \
713
    r0 = vec_mergeh(r8,  r12);  /*0,2,4,6,8,10,12,14 set 0*/               \
714
    r1 = vec_mergel(r8,  r12);  /*0,2,4,6,8,10,12,14 set 1*/               \
715
    r2 = vec_mergeh(r9,  r13);  /*0,2,4,6,8,10,12,14 set 2*/               \
716
    r4 = vec_mergeh(r10, r14);  /*1,3,5,7,9,11,13,15 set 0*/               \
717
    r5 = vec_mergel(r10, r14);  /*1,3,5,7,9,11,13,15 set 1*/               \
718
    r6 = vec_mergeh(r11, r15);  /*1,3,5,7,9,11,13,15 set 2*/               \
719
    /* Don't need to compute 3 and 7*/                                     \
720
                                                                           \
721
    /*Final merge*/                                                        \
722
    r8  = vec_mergeh(r0, r4);   /*all set 0*/                              \
723
    r9  = vec_mergel(r0, r4);   /*all set 1*/                              \
724
    r10 = vec_mergeh(r1, r5);   /*all set 2*/                              \
725
    r11 = vec_mergel(r1, r5);   /*all set 3*/                              \
726
    r12 = vec_mergeh(r2, r6);   /*all set 4*/                              \
727
    r13 = vec_mergel(r2, r6);   /*all set 5*/                              \
728
    /* Don't need to compute 14 and 15*/                                   \
729
                                                                           \
730
}
731

    
732
// out: o = |x-y| < a
733
static inline vec_u8 diff_lt_altivec ( register vec_u8 x,
734
                                         register vec_u8 y,
735
                                         register vec_u8 a) {
736

    
737
    register vec_u8 diff = vec_subs(x, y);
738
    register vec_u8 diffneg = vec_subs(y, x);
739
    register vec_u8 o = vec_or(diff, diffneg); /* |x-y| */
740
    o = (vec_u8)vec_cmplt(o, a);
741
    return o;
742
}
743

    
744
static inline vec_u8 h264_deblock_mask ( register vec_u8 p0,
745
                                           register vec_u8 p1,
746
                                           register vec_u8 q0,
747
                                           register vec_u8 q1,
748
                                           register vec_u8 alpha,
749
                                           register vec_u8 beta) {
750

    
751
    register vec_u8 mask;
752
    register vec_u8 tempmask;
753

    
754
    mask = diff_lt_altivec(p0, q0, alpha);
755
    tempmask = diff_lt_altivec(p1, p0, beta);
756
    mask = vec_and(mask, tempmask);
757
    tempmask = diff_lt_altivec(q1, q0, beta);
758
    mask = vec_and(mask, tempmask);
759

    
760
    return mask;
761
}
762

    
763
// out: newp1 = clip((p2 + ((p0 + q0 + 1) >> 1)) >> 1, p1-tc0, p1+tc0)
764
static inline vec_u8 h264_deblock_q1(register vec_u8 p0,
765
                                       register vec_u8 p1,
766
                                       register vec_u8 p2,
767
                                       register vec_u8 q0,
768
                                       register vec_u8 tc0) {
769

    
770
    register vec_u8 average = vec_avg(p0, q0);
771
    register vec_u8 temp;
772
    register vec_u8 uncliped;
773
    register vec_u8 ones;
774
    register vec_u8 max;
775
    register vec_u8 min;
776
    register vec_u8 newp1;
777

    
778
    temp = vec_xor(average, p2);
779
    average = vec_avg(average, p2);     /*avg(p2, avg(p0, q0)) */
780
    ones = vec_splat_u8(1);
781
    temp = vec_and(temp, ones);         /*(p2^avg(p0, q0)) & 1 */
782
    uncliped = vec_subs(average, temp); /*(p2+((p0+q0+1)>>1))>>1 */
783
    max = vec_adds(p1, tc0);
784
    min = vec_subs(p1, tc0);
785
    newp1 = vec_max(min, uncliped);
786
    newp1 = vec_min(max, newp1);
787
    return newp1;
788
}
789

    
790
#define h264_deblock_p0_q0(p0, p1, q0, q1, tc0masked) {                                           \
791
                                                                                                  \
792
    const vec_u8 A0v = vec_sl(vec_splat_u8(10), vec_splat_u8(4));                               \
793
                                                                                                  \
794
    register vec_u8 pq0bit = vec_xor(p0,q0);                                                    \
795
    register vec_u8 q1minus;                                                                    \
796
    register vec_u8 p0minus;                                                                    \
797
    register vec_u8 stage1;                                                                     \
798
    register vec_u8 stage2;                                                                     \
799
    register vec_u8 vec160;                                                                     \
800
    register vec_u8 delta;                                                                      \
801
    register vec_u8 deltaneg;                                                                   \
802
                                                                                                  \
803
    q1minus = vec_nor(q1, q1);                 /* 255 - q1 */                                     \
804
    stage1 = vec_avg(p1, q1minus);             /* (p1 - q1 + 256)>>1 */                           \
805
    stage2 = vec_sr(stage1, vec_splat_u8(1));  /* (p1 - q1 + 256)>>2 = 64 + (p1 - q1) >> 2 */     \
806
    p0minus = vec_nor(p0, p0);                 /* 255 - p0 */                                     \
807
    stage1 = vec_avg(q0, p0minus);             /* (q0 - p0 + 256)>>1 */                           \
808
    pq0bit = vec_and(pq0bit, vec_splat_u8(1));                                                    \
809
    stage2 = vec_avg(stage2, pq0bit);          /* 32 + ((q0 - p0)&1 + (p1 - q1) >> 2 + 1) >> 1 */ \
810
    stage2 = vec_adds(stage2, stage1);         /* 160 + ((p0 - q0) + (p1 - q1) >> 2 + 1) >> 1 */  \
811
    vec160 = vec_ld(0, &A0v);                                                                     \
812
    deltaneg = vec_subs(vec160, stage2);       /* -d */                                           \
813
    delta = vec_subs(stage2, vec160);          /* d */                                            \
814
    deltaneg = vec_min(tc0masked, deltaneg);                                                      \
815
    delta = vec_min(tc0masked, delta);                                                            \
816
    p0 = vec_subs(p0, deltaneg);                                                                  \
817
    q0 = vec_subs(q0, delta);                                                                     \
818
    p0 = vec_adds(p0, delta);                                                                     \
819
    q0 = vec_adds(q0, deltaneg);                                                                  \
820
}
821

    
822
#define h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0) {            \
823
    DECLARE_ALIGNED_16(unsigned char, temp[16]);                                             \
824
    register vec_u8 alphavec;                                                              \
825
    register vec_u8 betavec;                                                               \
826
    register vec_u8 mask;                                                                  \
827
    register vec_u8 p1mask;                                                                \
828
    register vec_u8 q1mask;                                                                \
829
    register vector signed   char tc0vec;                                                    \
830
    register vec_u8 finaltc0;                                                              \
831
    register vec_u8 tc0masked;                                                             \
832
    register vec_u8 newp1;                                                                 \
833
    register vec_u8 newq1;                                                                 \
834
                                                                                             \
835
    temp[0] = alpha;                                                                         \
836
    temp[1] = beta;                                                                          \
837
    alphavec = vec_ld(0, temp);                                                              \
838
    betavec = vec_splat(alphavec, 0x1);                                                      \
839
    alphavec = vec_splat(alphavec, 0x0);                                                     \
840
    mask = h264_deblock_mask(p0, p1, q0, q1, alphavec, betavec); /*if in block */            \
841
                                                                                             \
842
    *((int *)temp) = *((int *)tc0);                                                          \
843
    tc0vec = vec_ld(0, (signed char*)temp);                                                  \
844
    tc0vec = vec_mergeh(tc0vec, tc0vec);                                                     \
845
    tc0vec = vec_mergeh(tc0vec, tc0vec);                                                     \
846
    mask = vec_and(mask, vec_cmpgt(tc0vec, vec_splat_s8(-1)));  /* if tc0[i] >= 0 */         \
847
    finaltc0 = vec_and((vec_u8)tc0vec, mask);     /* tc = tc0 */                           \
848
                                                                                             \
849
    p1mask = diff_lt_altivec(p2, p0, betavec);                                               \
850
    p1mask = vec_and(p1mask, mask);                             /* if ( |p2 - p0| < beta) */ \
851
    tc0masked = vec_and(p1mask, (vec_u8)tc0vec);                                           \
852
    finaltc0 = vec_sub(finaltc0, p1mask);                       /* tc++ */                   \
853
    newp1 = h264_deblock_q1(p0, p1, p2, q0, tc0masked);                                      \
854
    /*end if*/                                                                               \
855
                                                                                             \
856
    q1mask = diff_lt_altivec(q2, q0, betavec);                                               \
857
    q1mask = vec_and(q1mask, mask);                             /* if ( |q2 - q0| < beta ) */\
858
    tc0masked = vec_and(q1mask, (vec_u8)tc0vec);                                           \
859
    finaltc0 = vec_sub(finaltc0, q1mask);                       /* tc++ */                   \
860
    newq1 = h264_deblock_q1(p0, q1, q2, q0, tc0masked);                                      \
861
    /*end if*/                                                                               \
862
                                                                                             \
863
    h264_deblock_p0_q0(p0, p1, q0, q1, finaltc0);                                            \
864
    p1 = newp1;                                                                              \
865
    q1 = newq1;                                                                              \
866
}
867

    
868
static void h264_v_loop_filter_luma_altivec(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) {
869

    
870
    if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) >= 0) {
871
        register vec_u8 p2 = vec_ld(-3*stride, pix);
872
        register vec_u8 p1 = vec_ld(-2*stride, pix);
873
        register vec_u8 p0 = vec_ld(-1*stride, pix);
874
        register vec_u8 q0 = vec_ld(0, pix);
875
        register vec_u8 q1 = vec_ld(stride, pix);
876
        register vec_u8 q2 = vec_ld(2*stride, pix);
877
        h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0);
878
        vec_st(p1, -2*stride, pix);
879
        vec_st(p0, -1*stride, pix);
880
        vec_st(q0, 0, pix);
881
        vec_st(q1, stride, pix);
882
    }
883
}
884

    
885
static void h264_h_loop_filter_luma_altivec(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) {
886

    
887
    register vec_u8 line0, line1, line2, line3, line4, line5;
888
    if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) < 0)
889
        return;
890
    readAndTranspose16x6(pix-3, stride, line0, line1, line2, line3, line4, line5);
891
    h264_loop_filter_luma_altivec(line0, line1, line2, line3, line4, line5, alpha, beta, tc0);
892
    transpose4x16(line1, line2, line3, line4);
893
    write16x4(pix-2, stride, line1, line2, line3, line4);
894
}
895

    
896
void dsputil_h264_init_ppc(DSPContext* c, AVCodecContext *avctx) {
897

    
898
    if (has_altivec()) {
899
        c->put_h264_chroma_pixels_tab[0] = put_h264_chroma_mc8_altivec;
900
        c->put_no_rnd_h264_chroma_pixels_tab[0] = put_no_rnd_h264_chroma_mc8_altivec;
901
        c->avg_h264_chroma_pixels_tab[0] = avg_h264_chroma_mc8_altivec;
902
/* ff_h264_idct_add_altivec may be re-enabled once AltiVec versions of
903
   h264_idct_add16, h264_idct_add16intra, h264_idct_add8 are implemented
904
        c->h264_idct_add = ff_h264_idct_add_altivec;
905
*/
906
        c->h264_idct8_add = ff_h264_idct8_add_altivec;
907
        c->h264_idct8_add4 = ff_h264_idct8_add4_altivec;
908
        c->h264_v_loop_filter_luma= h264_v_loop_filter_luma_altivec;
909
        c->h264_h_loop_filter_luma= h264_h_loop_filter_luma_altivec;
910

    
911
#define dspfunc(PFX, IDX, NUM) \
912
        c->PFX ## _pixels_tab[IDX][ 0] = PFX ## NUM ## _mc00_altivec; \
913
        c->PFX ## _pixels_tab[IDX][ 1] = PFX ## NUM ## _mc10_altivec; \
914
        c->PFX ## _pixels_tab[IDX][ 2] = PFX ## NUM ## _mc20_altivec; \
915
        c->PFX ## _pixels_tab[IDX][ 3] = PFX ## NUM ## _mc30_altivec; \
916
        c->PFX ## _pixels_tab[IDX][ 4] = PFX ## NUM ## _mc01_altivec; \
917
        c->PFX ## _pixels_tab[IDX][ 5] = PFX ## NUM ## _mc11_altivec; \
918
        c->PFX ## _pixels_tab[IDX][ 6] = PFX ## NUM ## _mc21_altivec; \
919
        c->PFX ## _pixels_tab[IDX][ 7] = PFX ## NUM ## _mc31_altivec; \
920
        c->PFX ## _pixels_tab[IDX][ 8] = PFX ## NUM ## _mc02_altivec; \
921
        c->PFX ## _pixels_tab[IDX][ 9] = PFX ## NUM ## _mc12_altivec; \
922
        c->PFX ## _pixels_tab[IDX][10] = PFX ## NUM ## _mc22_altivec; \
923
        c->PFX ## _pixels_tab[IDX][11] = PFX ## NUM ## _mc32_altivec; \
924
        c->PFX ## _pixels_tab[IDX][12] = PFX ## NUM ## _mc03_altivec; \
925
        c->PFX ## _pixels_tab[IDX][13] = PFX ## NUM ## _mc13_altivec; \
926
        c->PFX ## _pixels_tab[IDX][14] = PFX ## NUM ## _mc23_altivec; \
927
        c->PFX ## _pixels_tab[IDX][15] = PFX ## NUM ## _mc33_altivec
928

    
929
        dspfunc(put_h264_qpel, 0, 16);
930
        dspfunc(avg_h264_qpel, 0, 16);
931
#undef dspfunc
932
    }
933
}