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40e6575aa3
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>
113 lines
3.7 KiB
C
113 lines
3.7 KiB
C
/*
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* H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
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* Copyright (c) 2003-2010 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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#include "libavutil/attributes.h"
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#include "h264qpel.h"
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#define pixeltmp int16_t
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#define BIT_DEPTH 8
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#include "h264qpel_template.c"
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#undef BIT_DEPTH
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#define BIT_DEPTH 9
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#include "h264qpel_template.c"
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#undef BIT_DEPTH
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#define BIT_DEPTH 10
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#include "h264qpel_template.c"
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#undef BIT_DEPTH
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#undef pixeltmp
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#define pixeltmp int32_t
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#define BIT_DEPTH 12
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#include "h264qpel_template.c"
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#undef BIT_DEPTH
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#define BIT_DEPTH 14
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#include "h264qpel_template.c"
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#undef BIT_DEPTH
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av_cold void ff_h264qpel_init(H264QpelContext *c, int bit_depth)
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{
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#undef FUNCC
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#define FUNCC(f, depth) f ## _ ## depth ## _c
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#define dspfunc2(PFX, IDX, NUM, depth) \
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c->PFX ## _pixels_tab[IDX][ 0] = FUNCC(PFX ## NUM ## _mc00, depth); \
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c->PFX ## _pixels_tab[IDX][ 1] = FUNCC(PFX ## NUM ## _mc10, depth); \
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c->PFX ## _pixels_tab[IDX][ 2] = FUNCC(PFX ## NUM ## _mc20, depth); \
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c->PFX ## _pixels_tab[IDX][ 3] = FUNCC(PFX ## NUM ## _mc30, depth); \
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c->PFX ## _pixels_tab[IDX][ 4] = FUNCC(PFX ## NUM ## _mc01, depth); \
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c->PFX ## _pixels_tab[IDX][ 5] = FUNCC(PFX ## NUM ## _mc11, depth); \
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c->PFX ## _pixels_tab[IDX][ 6] = FUNCC(PFX ## NUM ## _mc21, depth); \
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c->PFX ## _pixels_tab[IDX][ 7] = FUNCC(PFX ## NUM ## _mc31, depth); \
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c->PFX ## _pixels_tab[IDX][ 8] = FUNCC(PFX ## NUM ## _mc02, depth); \
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c->PFX ## _pixels_tab[IDX][ 9] = FUNCC(PFX ## NUM ## _mc12, depth); \
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c->PFX ## _pixels_tab[IDX][10] = FUNCC(PFX ## NUM ## _mc22, depth); \
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c->PFX ## _pixels_tab[IDX][11] = FUNCC(PFX ## NUM ## _mc32, depth); \
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c->PFX ## _pixels_tab[IDX][12] = FUNCC(PFX ## NUM ## _mc03, depth); \
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c->PFX ## _pixels_tab[IDX][13] = FUNCC(PFX ## NUM ## _mc13, depth); \
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c->PFX ## _pixels_tab[IDX][14] = FUNCC(PFX ## NUM ## _mc23, depth); \
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c->PFX ## _pixels_tab[IDX][15] = FUNCC(PFX ## NUM ## _mc33, depth)
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#define SET_QPEL(depth) \
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dspfunc2(put_h264_qpel, 0, 16, depth); \
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dspfunc2(put_h264_qpel, 1, 8, depth); \
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dspfunc2(put_h264_qpel, 2, 4, depth); \
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dspfunc2(put_h264_qpel, 3, 2, depth); \
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dspfunc2(avg_h264_qpel, 0, 16, depth); \
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dspfunc2(avg_h264_qpel, 1, 8, depth); \
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dspfunc2(avg_h264_qpel, 2, 4, depth)
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switch (bit_depth) {
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default:
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SET_QPEL(8);
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break;
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case 9:
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SET_QPEL(9);
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break;
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case 10:
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SET_QPEL(10);
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break;
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case 12:
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SET_QPEL(12);
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break;
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case 14:
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SET_QPEL(14);
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break;
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}
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#if ARCH_AARCH64
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ff_h264qpel_init_aarch64(c, bit_depth);
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#elif ARCH_ARM
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ff_h264qpel_init_arm(c, bit_depth);
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#elif ARCH_PPC
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ff_h264qpel_init_ppc(c, bit_depth);
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#elif ARCH_X86
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ff_h264qpel_init_x86(c, bit_depth);
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#elif ARCH_MIPS
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ff_h264qpel_init_mips(c, bit_depth);
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#elif ARCH_LOONGARCH64
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ff_h264qpel_init_loongarch(c, bit_depth);
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#endif
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}
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