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https://git.ffmpeg.org/ffmpeg.git
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77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
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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 "config.h"
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#include "libavutil/attributes.h"
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#include "avcodec.h"
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#include "pixblockdsp.h"
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#define BIT_DEPTH 16
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#include "pixblockdsp_template.c"
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#undef BIT_DEPTH
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#define BIT_DEPTH 8
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#include "pixblockdsp_template.c"
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static void diff_pixels_c(int16_t *restrict block, const uint8_t *s1,
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const uint8_t *s2, int stride)
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{
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int i;
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/* read the pixels */
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for (i = 0; i < 8; i++) {
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block[0] = s1[0] - s2[0];
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block[1] = s1[1] - s2[1];
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block[2] = s1[2] - s2[2];
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block[3] = s1[3] - s2[3];
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block[4] = s1[4] - s2[4];
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block[5] = s1[5] - s2[5];
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block[6] = s1[6] - s2[6];
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block[7] = s1[7] - s2[7];
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s1 += stride;
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s2 += stride;
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block += 8;
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}
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}
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av_cold void ff_pixblockdsp_init(PixblockDSPContext *c, AVCodecContext *avctx)
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{
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const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8;
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c->diff_pixels = diff_pixels_c;
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switch (avctx->bits_per_raw_sample) {
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case 9:
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case 10:
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c->get_pixels = get_pixels_16_c;
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break;
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default:
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c->get_pixels = get_pixels_8_c;
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break;
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}
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if (ARCH_ARM)
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ff_pixblockdsp_init_arm(c, avctx, high_bit_depth);
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if (ARCH_PPC)
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ff_pixblockdsp_init_ppc(c, avctx, high_bit_depth);
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if (ARCH_X86)
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ff_pixblockdsp_init_x86(c, avctx, high_bit_depth);
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}
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