mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
218d6844b3
This performs the start code search which was previously part of
h264_find_frame_end() - the most CPU intensive part of the function.
By itself, this results in a performance regression:
Before After
Mean StdDev Mean StdDev Change
Overall time 2925.6 26.2 3068.5 31.7 -4.7%
but this can more than be made up for by platform-optimised
implementations of the function.
Signed-off-by: Martin Storsjö <martin@martin.st>
170 lines
6.2 KiB
C
170 lines
6.2 KiB
C
/*
|
|
* H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
|
|
* Copyright (c) 2003-2010 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 <stdint.h>
|
|
|
|
#include "libavutil/attributes.h"
|
|
#include "avcodec.h"
|
|
#include "h264dsp.h"
|
|
#include "h264idct.h"
|
|
#include "libavutil/common.h"
|
|
|
|
#define BIT_DEPTH 8
|
|
#include "h264dsp_template.c"
|
|
#undef BIT_DEPTH
|
|
|
|
#define BIT_DEPTH 9
|
|
#include "h264dsp_template.c"
|
|
#undef BIT_DEPTH
|
|
|
|
#define BIT_DEPTH 10
|
|
#include "h264dsp_template.c"
|
|
#undef BIT_DEPTH
|
|
|
|
#define BIT_DEPTH 8
|
|
#include "h264addpx_template.c"
|
|
#undef BIT_DEPTH
|
|
|
|
#define BIT_DEPTH 16
|
|
#include "h264addpx_template.c"
|
|
#undef BIT_DEPTH
|
|
|
|
static int h264_find_start_code_candidate_c(const uint8_t *buf, int size)
|
|
{
|
|
int i = 0;
|
|
#if HAVE_FAST_UNALIGNED
|
|
/* we check i < size instead of i + 3 / 7 because it is
|
|
* simpler and there must be FF_INPUT_BUFFER_PADDING_SIZE
|
|
* bytes at the end.
|
|
*/
|
|
#if HAVE_FAST_64BIT
|
|
while (i < size &&
|
|
!((~*(const uint64_t *)(buf + i) &
|
|
(*(const uint64_t *)(buf + i) - 0x0101010101010101ULL)) &
|
|
0x8080808080808080ULL))
|
|
i += 8;
|
|
#else
|
|
while (i < size &&
|
|
!((~*(const uint32_t *)(buf + i) &
|
|
(*(const uint32_t *)(buf + i) - 0x01010101U)) &
|
|
0x80808080U))
|
|
i += 4;
|
|
#endif
|
|
#endif
|
|
for (; i < size; i++)
|
|
if (!buf[i])
|
|
break;
|
|
return i;
|
|
}
|
|
|
|
av_cold void ff_h264dsp_init(H264DSPContext *c, const int bit_depth,
|
|
const int chroma_format_idc)
|
|
{
|
|
#undef FUNC
|
|
#define FUNC(a, depth) a ## _ ## depth ## _c
|
|
|
|
#define ADDPX_DSP(depth) \
|
|
c->h264_add_pixels4_clear = FUNC(ff_h264_add_pixels4, depth);\
|
|
c->h264_add_pixels8_clear = FUNC(ff_h264_add_pixels8, depth)
|
|
|
|
if (bit_depth > 8 && bit_depth <= 16) {
|
|
ADDPX_DSP(16);
|
|
} else {
|
|
ADDPX_DSP(8);
|
|
}
|
|
|
|
#define H264_DSP(depth) \
|
|
c->h264_idct_add= FUNC(ff_h264_idct_add, depth);\
|
|
c->h264_idct8_add= FUNC(ff_h264_idct8_add, depth);\
|
|
c->h264_idct_dc_add= FUNC(ff_h264_idct_dc_add, depth);\
|
|
c->h264_idct8_dc_add= FUNC(ff_h264_idct8_dc_add, depth);\
|
|
c->h264_idct_add16 = FUNC(ff_h264_idct_add16, depth);\
|
|
c->h264_idct8_add4 = FUNC(ff_h264_idct8_add4, depth);\
|
|
if (chroma_format_idc == 1)\
|
|
c->h264_idct_add8 = FUNC(ff_h264_idct_add8, depth);\
|
|
else\
|
|
c->h264_idct_add8 = FUNC(ff_h264_idct_add8_422, depth);\
|
|
c->h264_idct_add16intra= FUNC(ff_h264_idct_add16intra, depth);\
|
|
c->h264_luma_dc_dequant_idct= FUNC(ff_h264_luma_dc_dequant_idct, depth);\
|
|
if (chroma_format_idc == 1)\
|
|
c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma_dc_dequant_idct, depth);\
|
|
else\
|
|
c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma422_dc_dequant_idct, depth);\
|
|
\
|
|
c->weight_h264_pixels_tab[0]= FUNC(weight_h264_pixels16, depth);\
|
|
c->weight_h264_pixels_tab[1]= FUNC(weight_h264_pixels8, depth);\
|
|
c->weight_h264_pixels_tab[2]= FUNC(weight_h264_pixels4, depth);\
|
|
c->weight_h264_pixels_tab[3]= FUNC(weight_h264_pixels2, depth);\
|
|
c->biweight_h264_pixels_tab[0]= FUNC(biweight_h264_pixels16, depth);\
|
|
c->biweight_h264_pixels_tab[1]= FUNC(biweight_h264_pixels8, depth);\
|
|
c->biweight_h264_pixels_tab[2]= FUNC(biweight_h264_pixels4, depth);\
|
|
c->biweight_h264_pixels_tab[3]= FUNC(biweight_h264_pixels2, depth);\
|
|
\
|
|
c->h264_v_loop_filter_luma= FUNC(h264_v_loop_filter_luma, depth);\
|
|
c->h264_h_loop_filter_luma= FUNC(h264_h_loop_filter_luma, depth);\
|
|
c->h264_h_loop_filter_luma_mbaff= FUNC(h264_h_loop_filter_luma_mbaff, depth);\
|
|
c->h264_v_loop_filter_luma_intra= FUNC(h264_v_loop_filter_luma_intra, depth);\
|
|
c->h264_h_loop_filter_luma_intra= FUNC(h264_h_loop_filter_luma_intra, depth);\
|
|
c->h264_h_loop_filter_luma_mbaff_intra= FUNC(h264_h_loop_filter_luma_mbaff_intra, depth);\
|
|
c->h264_v_loop_filter_chroma= FUNC(h264_v_loop_filter_chroma, depth);\
|
|
if (chroma_format_idc == 1)\
|
|
c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma, depth);\
|
|
else\
|
|
c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma422, depth);\
|
|
if (chroma_format_idc == 1)\
|
|
c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma_mbaff, depth);\
|
|
else\
|
|
c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma422_mbaff, depth);\
|
|
c->h264_v_loop_filter_chroma_intra= FUNC(h264_v_loop_filter_chroma_intra, depth);\
|
|
if (chroma_format_idc == 1)\
|
|
c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma_intra, depth);\
|
|
else\
|
|
c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma422_intra, depth);\
|
|
if (chroma_format_idc == 1)\
|
|
c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma_mbaff_intra, depth);\
|
|
else\
|
|
c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma422_mbaff_intra, depth);\
|
|
c->h264_loop_filter_strength= NULL;
|
|
|
|
switch (bit_depth) {
|
|
case 9:
|
|
H264_DSP(9);
|
|
break;
|
|
case 10:
|
|
H264_DSP(10);
|
|
break;
|
|
default:
|
|
H264_DSP(8);
|
|
break;
|
|
}
|
|
c->h264_find_start_code_candidate = h264_find_start_code_candidate_c;
|
|
|
|
if (ARCH_ARM) ff_h264dsp_init_arm(c, bit_depth, chroma_format_idc);
|
|
if (ARCH_PPC) ff_h264dsp_init_ppc(c, bit_depth, chroma_format_idc);
|
|
if (ARCH_X86) ff_h264dsp_init_x86(c, bit_depth, chroma_format_idc);
|
|
}
|