mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
62844c3fd6
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: Martin Storsjö <martin@martin.st>
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
|
|
* H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
|
|
* Copyright (c) 2003-2011 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* Libav is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* H.264 / AVC / MPEG4 part10 DSP functions.
|
|
* @author Michael Niedermayer <michaelni@gmx.at>
|
|
*/
|
|
|
|
#include "bit_depth_template.c"
|
|
|
|
static void FUNCC(ff_h264_add_pixels4)(uint8_t *_dst, int16_t *_src, int stride)
|
|
{
|
|
int i;
|
|
pixel *dst = (pixel *) _dst;
|
|
dctcoef *src = (dctcoef *) _src;
|
|
stride /= sizeof(pixel);
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
dst[0] += src[0];
|
|
dst[1] += src[1];
|
|
dst[2] += src[2];
|
|
dst[3] += src[3];
|
|
|
|
dst += stride;
|
|
src += 4;
|
|
}
|
|
|
|
memset(_src, 0, sizeof(dctcoef) * 16);
|
|
}
|
|
|
|
static void FUNCC(ff_h264_add_pixels8)(uint8_t *_dst, int16_t *_src, int stride)
|
|
{
|
|
int i;
|
|
pixel *dst = (pixel *) _dst;
|
|
dctcoef *src = (dctcoef *) _src;
|
|
stride /= sizeof(pixel);
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
dst[0] += src[0];
|
|
dst[1] += src[1];
|
|
dst[2] += src[2];
|
|
dst[3] += src[3];
|
|
dst[4] += src[4];
|
|
dst[5] += src[5];
|
|
dst[6] += src[6];
|
|
dst[7] += src[7];
|
|
|
|
dst += stride;
|
|
src += 8;
|
|
}
|
|
|
|
memset(_src, 0, sizeof(dctcoef) * 64);
|
|
}
|