Files
FFmpeg/libavcodec/h264chroma.c
Andreas Rheinhardt 53a26f7d41 avcodec/mpegvideo_dec: Use C version of h264chroma mc2 functions
H.264 only uses these functions with height 2 or 4 and
the aarch64, arm and mips versions of them optimize based
on this. Yet this is not true when these functions are used
by the lowres code in mpegvideo_dec.c. So revert back to
the C versions of these functions for mpegvideo_dec so that
the H.264 decoder can still use fully optimized functions.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2026-04-16 07:36:01 +02:00

67 lines
2.2 KiB
C

/*
* 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 "config.h"
#include "libavutil/attributes.h"
#include "h264chroma.h"
#define BIT_DEPTH 8
#define MC2_STATIC
#include "h264chroma_template.c"
#undef MC2_STATIC
#undef BIT_DEPTH
#define BIT_DEPTH 16
#define MC2_STATIC static
#include "h264chroma_template.c"
#undef MC2_STATIC
#undef BIT_DEPTH
#define SET_CHROMA(depth) \
c->put_h264_chroma_pixels_tab[0] = put_h264_chroma_mc8_ ## depth ## _c; \
c->put_h264_chroma_pixels_tab[1] = put_h264_chroma_mc4_ ## depth ## _c; \
c->put_h264_chroma_pixels_tab[2] = ff_put_h264_chroma_mc2_ ## depth ## _c; \
c->avg_h264_chroma_pixels_tab[0] = avg_h264_chroma_mc8_ ## depth ## _c; \
c->avg_h264_chroma_pixels_tab[1] = avg_h264_chroma_mc4_ ## depth ## _c; \
c->avg_h264_chroma_pixels_tab[2] = ff_avg_h264_chroma_mc2_ ## depth ## _c; \
av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)
{
if (bit_depth > 8 && bit_depth <= 16) {
SET_CHROMA(16);
} else {
SET_CHROMA(8);
}
#if ARCH_AARCH64
ff_h264chroma_init_aarch64(c, bit_depth);
#elif ARCH_ARM
ff_h264chroma_init_arm(c, bit_depth);
#elif ARCH_PPC
ff_h264chroma_init_ppc(c, bit_depth);
#elif ARCH_X86 && HAVE_X86ASM
ff_h264chroma_init_x86(c, bit_depth);
#elif ARCH_MIPS
ff_h264chroma_init_mips(c, bit_depth);
#elif ARCH_LOONGARCH64
ff_h264chroma_init_loongarch(c, bit_depth);
#elif ARCH_RISCV
ff_h264chroma_init_riscv(c, bit_depth);
#endif
}