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FFmpeg/libavcodec/h264qpel.c
Andreas Rheinhardt 40e6575aa3 all: Replace if (ARCH_FOO) checks by #if ARCH_FOO
This is more spec-compliant because it does not rely
on dead-code elimination by the compiler. Especially
MSVC has problems with this, as can be seen in
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/296373.html
or
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/297022.html

This commit does not eliminate every instance where we rely
on dead code elimination: It only tackles branching to
the initialization of arch-specific dsp code, not e.g. all
uses of CONFIG_ and HAVE_ checks. But maybe it is already
enough to compile FFmpeg with MSVC with whole-programm-optimizations
enabled (if one does not disable too many components).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-06-15 04:56:37 +02:00

113 lines
3.7 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 FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/attributes.h"
#include "h264qpel.h"
#define pixeltmp int16_t
#define BIT_DEPTH 8
#include "h264qpel_template.c"
#undef BIT_DEPTH
#define BIT_DEPTH 9
#include "h264qpel_template.c"
#undef BIT_DEPTH
#define BIT_DEPTH 10
#include "h264qpel_template.c"
#undef BIT_DEPTH
#undef pixeltmp
#define pixeltmp int32_t
#define BIT_DEPTH 12
#include "h264qpel_template.c"
#undef BIT_DEPTH
#define BIT_DEPTH 14
#include "h264qpel_template.c"
#undef BIT_DEPTH
av_cold void ff_h264qpel_init(H264QpelContext *c, int bit_depth)
{
#undef FUNCC
#define FUNCC(f, depth) f ## _ ## depth ## _c
#define dspfunc2(PFX, IDX, NUM, depth) \
c->PFX ## _pixels_tab[IDX][ 0] = FUNCC(PFX ## NUM ## _mc00, depth); \
c->PFX ## _pixels_tab[IDX][ 1] = FUNCC(PFX ## NUM ## _mc10, depth); \
c->PFX ## _pixels_tab[IDX][ 2] = FUNCC(PFX ## NUM ## _mc20, depth); \
c->PFX ## _pixels_tab[IDX][ 3] = FUNCC(PFX ## NUM ## _mc30, depth); \
c->PFX ## _pixels_tab[IDX][ 4] = FUNCC(PFX ## NUM ## _mc01, depth); \
c->PFX ## _pixels_tab[IDX][ 5] = FUNCC(PFX ## NUM ## _mc11, depth); \
c->PFX ## _pixels_tab[IDX][ 6] = FUNCC(PFX ## NUM ## _mc21, depth); \
c->PFX ## _pixels_tab[IDX][ 7] = FUNCC(PFX ## NUM ## _mc31, depth); \
c->PFX ## _pixels_tab[IDX][ 8] = FUNCC(PFX ## NUM ## _mc02, depth); \
c->PFX ## _pixels_tab[IDX][ 9] = FUNCC(PFX ## NUM ## _mc12, depth); \
c->PFX ## _pixels_tab[IDX][10] = FUNCC(PFX ## NUM ## _mc22, depth); \
c->PFX ## _pixels_tab[IDX][11] = FUNCC(PFX ## NUM ## _mc32, depth); \
c->PFX ## _pixels_tab[IDX][12] = FUNCC(PFX ## NUM ## _mc03, depth); \
c->PFX ## _pixels_tab[IDX][13] = FUNCC(PFX ## NUM ## _mc13, depth); \
c->PFX ## _pixels_tab[IDX][14] = FUNCC(PFX ## NUM ## _mc23, depth); \
c->PFX ## _pixels_tab[IDX][15] = FUNCC(PFX ## NUM ## _mc33, depth)
#define SET_QPEL(depth) \
dspfunc2(put_h264_qpel, 0, 16, depth); \
dspfunc2(put_h264_qpel, 1, 8, depth); \
dspfunc2(put_h264_qpel, 2, 4, depth); \
dspfunc2(put_h264_qpel, 3, 2, depth); \
dspfunc2(avg_h264_qpel, 0, 16, depth); \
dspfunc2(avg_h264_qpel, 1, 8, depth); \
dspfunc2(avg_h264_qpel, 2, 4, depth)
switch (bit_depth) {
default:
SET_QPEL(8);
break;
case 9:
SET_QPEL(9);
break;
case 10:
SET_QPEL(10);
break;
case 12:
SET_QPEL(12);
break;
case 14:
SET_QPEL(14);
break;
}
#if ARCH_AARCH64
ff_h264qpel_init_aarch64(c, bit_depth);
#elif ARCH_ARM
ff_h264qpel_init_arm(c, bit_depth);
#elif ARCH_PPC
ff_h264qpel_init_ppc(c, bit_depth);
#elif ARCH_X86
ff_h264qpel_init_x86(c, bit_depth);
#elif ARCH_MIPS
ff_h264qpel_init_mips(c, bit_depth);
#elif ARCH_LOONGARCH64
ff_h264qpel_init_loongarch(c, bit_depth);
#endif
}