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https://gitee.com/openharmony/third_party_ffmpeg
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1acd7d594c
The non-intra-pcm branch in hl_decode_mb (simple, 8bpp) goes from 700 to 672 cycles, and the complete loop of decode_mb_cabac and hl_decode_mb (in the decode_slice loop) goes from 1759 to 1733 cycles on the clip tested (cathedral), i.e. almost 30 cycles per mb faster. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
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* Copyright (c) 2003-2011 Michael Niedermayer <michaelni@gmx.at>
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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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/**
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* @file
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* H.264 / AVC / MPEG4 part10 DSP functions.
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* @author Michael Niedermayer <michaelni@gmx.at>
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*/
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#include "bit_depth_template.c"
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static void FUNCC(ff_h264_add_pixels4)(uint8_t *_dst, int16_t *_src, int stride)
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{
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int i;
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pixel *dst = (pixel *) _dst;
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dctcoef *src = (dctcoef *) _src;
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stride /= sizeof(pixel);
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for (i = 0; i < 4; i++) {
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dst[0] += src[0];
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dst[1] += src[1];
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dst[2] += src[2];
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dst[3] += src[3];
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dst += stride;
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src += 4;
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}
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memset(_src, 0, sizeof(dctcoef) * 16);
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}
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static void FUNCC(ff_h264_add_pixels8)(uint8_t *_dst, int16_t *_src, int stride)
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{
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int i;
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pixel *dst = (pixel *) _dst;
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dctcoef *src = (dctcoef *) _src;
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stride /= sizeof(pixel);
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for (i = 0; i < 8; i++) {
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dst[0] += src[0];
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dst[1] += src[1];
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dst[2] += src[2];
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dst[3] += src[3];
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dst[4] += src[4];
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dst[5] += src[5];
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dst[6] += src[6];
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dst[7] += src[7];
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dst += stride;
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src += 8;
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}
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memset(_src, 0, sizeof(dctcoef) * 64);
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}
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