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https://git.videolan.org/git/ffmpeg.git
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76 lines
2.5 KiB
C
76 lines
2.5 KiB
C
/*
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*
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* Original MPlayer filters by Richard Felker.
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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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
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* 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 "libavutil/cpu.h"
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#include "libavutil/x86/cpu.h"
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#include "libavutil/x86/asm.h"
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#include "libavfilter/vf_eq.h"
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extern void ff_process_one_line_mmxext(const uint8_t *src, uint8_t *dst, short contrast,
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short brightness, int w);
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extern void ff_process_one_line_sse2(const uint8_t *src, uint8_t *dst, short contrast,
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short brightness, int w);
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#if HAVE_X86ASM
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static void process_mmxext(EQParameters *param, uint8_t *dst, int dst_stride,
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const uint8_t *src, int src_stride, int w, int h)
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{
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short contrast = (short) (param->contrast * 256 * 16);
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short brightness = ((short) (100.0 * param->brightness + 100.0) * 511)
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/ 200 - 128 - contrast / 32;
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while (h--) {
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ff_process_one_line_mmxext(src, dst, contrast, brightness, w);
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src += src_stride;
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dst += dst_stride;
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}
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emms_c();
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}
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static void process_sse2(EQParameters *param, uint8_t *dst, int dst_stride,
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const uint8_t *src, int src_stride, int w, int h)
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{
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short contrast = (short) (param->contrast * 256 * 16);
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short brightness = ((short) (100.0 * param->brightness + 100.0) * 511)
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/ 200 - 128 - contrast / 32;
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while (h--) {
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ff_process_one_line_sse2(src, dst, contrast, brightness, w);
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src += src_stride;
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dst += dst_stride;
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}
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}
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#endif
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av_cold void ff_eq_init_x86(EQContext *eq)
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{
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#if HAVE_X86ASM
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int cpu_flags = av_get_cpu_flags();
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if (EXTERNAL_MMXEXT(cpu_flags)) {
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eq->process = process_mmxext;
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}
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if (EXTERNAL_SSE2(cpu_flags)) {
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eq->process = process_sse2;
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}
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#endif
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}
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