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e4a94d8b36
This avoids SIMD-optimized functions having to sign-extend their stride argument manually to be able to do pointer arithmetic.
58 lines
2.4 KiB
C
58 lines
2.4 KiB
C
/*
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* ARM NEON optimised H.264 chroma functions
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* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 <stdint.h>
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#include "libavutil/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/arm/cpu.h"
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#include "libavcodec/h264chroma.h"
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void ff_put_h264_chroma_mc8_neon(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
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int h, int x, int y);
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void ff_put_h264_chroma_mc4_neon(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
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int h, int x, int y);
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void ff_put_h264_chroma_mc2_neon(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
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int h, int x, int y);
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void ff_avg_h264_chroma_mc8_neon(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
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int h, int x, int y);
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void ff_avg_h264_chroma_mc4_neon(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
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int h, int x, int y);
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void ff_avg_h264_chroma_mc2_neon(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
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int h, int x, int y);
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av_cold void ff_h264chroma_init_arm(H264ChromaContext *c, int bit_depth)
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{
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const int high_bit_depth = bit_depth > 8;
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int cpu_flags = av_get_cpu_flags();
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if (have_neon(cpu_flags) && !high_bit_depth) {
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c->put_h264_chroma_pixels_tab[0] = ff_put_h264_chroma_mc8_neon;
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c->put_h264_chroma_pixels_tab[1] = ff_put_h264_chroma_mc4_neon;
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c->put_h264_chroma_pixels_tab[2] = ff_put_h264_chroma_mc2_neon;
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c->avg_h264_chroma_pixels_tab[0] = ff_avg_h264_chroma_mc8_neon;
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c->avg_h264_chroma_pixels_tab[1] = ff_avg_h264_chroma_mc4_neon;
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c->avg_h264_chroma_pixels_tab[2] = ff_avg_h264_chroma_mc2_neon;
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}
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}
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