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- /*
- * Copyright (C) 2009 Loren Merritt <lorenm@u.washington.edu>
- *
- * 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 "libavutil/cpu.h"
- #include "libavutil/mem.h"
- #include "libavutil/x86/cpu.h"
- #include "libavfilter/gradfun.h"
- void ff_gradfun_filter_line_mmxext(intptr_t x, uint8_t *dst, const uint8_t *src,
- const uint16_t *dc, int thresh,
- const uint16_t *dithers);
- void ff_gradfun_filter_line_ssse3(intptr_t x, uint8_t *dst, const uint8_t *src,
- const uint16_t *dc, int thresh,
- const uint16_t *dithers);
- void ff_gradfun_blur_line_movdqa_sse2(intptr_t x, uint16_t *buf,
- const uint16_t *buf1, uint16_t *dc,
- const uint8_t *src1, const uint8_t *src2);
- void ff_gradfun_blur_line_movdqu_sse2(intptr_t x, uint16_t *buf,
- const uint16_t *buf1, uint16_t *dc,
- const uint8_t *src1, const uint8_t *src2);
- #if HAVE_YASM
- static void gradfun_filter_line_mmxext(uint8_t *dst, const uint8_t *src,
- const uint16_t *dc,
- int width, int thresh,
- const uint16_t *dithers)
- {
- intptr_t x;
- if (width & 3) {
- x = width & ~3;
- ff_gradfun_filter_line_c(dst + x, src + x, dc + x / 2,
- width - x, thresh, dithers);
- width = x;
- }
- x = -width;
- ff_gradfun_filter_line_mmxext(x, dst + width, src + width, dc + width / 2,
- thresh, dithers);
- }
- static void gradfun_filter_line_ssse3(uint8_t *dst, const uint8_t *src, const uint16_t *dc,
- int width, int thresh,
- const uint16_t *dithers)
- {
- intptr_t x;
- if (width & 7) {
- // could be 10% faster if I somehow eliminated this
- x = width & ~7;
- ff_gradfun_filter_line_c(dst + x, src + x, dc + x / 2,
- width - x, thresh, dithers);
- width = x;
- }
- x = -width;
- ff_gradfun_filter_line_ssse3(x, dst + width, src + width, dc + width / 2,
- thresh, dithers);
- }
- static void gradfun_blur_line_sse2(uint16_t *dc, uint16_t *buf, const uint16_t *buf1,
- const uint8_t *src, int src_linesize, int width)
- {
- intptr_t x = -2 * width;
- if (((intptr_t) src | src_linesize) & 15)
- ff_gradfun_blur_line_movdqu_sse2(x, buf + width, buf1 + width,
- dc + width, src + width * 2,
- src + width * 2 + src_linesize);
- else
- ff_gradfun_blur_line_movdqa_sse2(x, buf + width, buf1 + width,
- dc + width, src + width * 2,
- src + width * 2 + src_linesize);
- }
- #endif /* HAVE_YASM */
- av_cold void ff_gradfun_init_x86(GradFunContext *gf)
- {
- #if HAVE_YASM
- int cpu_flags = av_get_cpu_flags();
- if (EXTERNAL_MMXEXT(cpu_flags))
- gf->filter_line = gradfun_filter_line_mmxext;
- if (EXTERNAL_SSSE3(cpu_flags))
- gf->filter_line = gradfun_filter_line_ssse3;
- if (EXTERNAL_SSE2(cpu_flags))
- gf->blur_line = gradfun_blur_line_sse2;
- #endif /* HAVE_YASM */
- }
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