mirror of https://git.ffmpeg.org/ffmpeg.git
avfilter: Port mp=eq/eq2 to lavfi
Code adapted from James Darnley's port Some fixes from Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Arwa Arif
Michael Niedermayer
parent
7aeafacfd0
commit
4c38e960d0
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@ -2581,6 +2581,7 @@ delogo_filter_deps="gpl"
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deshake_filter_select="pixelutils"
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drawtext_filter_deps="libfreetype"
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ebur128_filter_deps="gpl"
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eq_filter_deps="gpl"
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flite_filter_deps="libflite"
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frei0r_filter_deps="frei0r dlopen"
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frei0r_src_filter_deps="frei0r dlopen"
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@ -4335,6 +4335,49 @@ edgedetect=mode=colormix:high=0
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@end example
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@end itemize
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@section eq
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Set brightness, contrast, saturation and approximate gamma adjustment.
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The filter accepts the following options:
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@table @option
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@item contrast
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Set the contrast value. It accepts a float value in range @code{-2.0} to
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@code{2.0}. The default value is @code{0.0}.
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@item brightness
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Set the brightness value. It accepts a float value in range @code{-1.0} to
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@code{1.0}. The default value is @code{0.0}.
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@item saturation
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Set the saturation value. It accepts a float value in range @code{0.0} to
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@code{3.0}. The default value is @code{1.0}.
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@item gamma
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Set the gamma value. It accepts a float value in range @code{0.1} to @code{10.0}.
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The default value is @code{1.0}.
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@item gamma_r
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Set the gamma value for red. It accepts a float value in range
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@code{0.1} to @code{10.0}. The default value is @code{1.0}.
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@item gamma_g
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Set the gamma value for green. It accepts a float value in range
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@code{0.1} to @code{10.0}. The default value is @code{1.0}.
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@item gamma_b
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Set the gamma value for blue. It accepts a float value in range
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@code{0.1} to @code{10.0}. The default value is @code{1.0}.
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@item gamma_weight
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Can be used to reduce the effect of a high gamma value on bright image areas,
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e.g. keep them from getting overamplified and just plain white. It accepts a
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float value in range @code{0.0} to @code{1.0}.A value of @code{0.0} turns the
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gamma correction all the way down while @code{1.0} leaves it at its full strength.
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Default is @code{1.0}.
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@end table
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@section extractplanes
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Extract color channel components from input video stream into
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@ -116,6 +116,7 @@ OBJS-$(CONFIG_DRAWGRID_FILTER) += vf_drawbox.o
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OBJS-$(CONFIG_DRAWTEXT_FILTER) += vf_drawtext.o
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OBJS-$(CONFIG_ELBG_FILTER) += vf_elbg.o
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OBJS-$(CONFIG_EDGEDETECT_FILTER) += vf_edgedetect.o
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OBJS-$(CONFIG_EQ_FILTER) += vf_eq.o
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OBJS-$(CONFIG_EXTRACTPLANES_FILTER) += vf_extractplanes.o
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OBJS-$(CONFIG_FADE_FILTER) += vf_fade.o
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OBJS-$(CONFIG_FIELD_FILTER) += vf_field.o
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@ -132,6 +132,7 @@ void avfilter_register_all(void)
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REGISTER_FILTER(DRAWTEXT, drawtext, vf);
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REGISTER_FILTER(EDGEDETECT, edgedetect, vf);
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REGISTER_FILTER(ELBG, elbg, vf);
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REGISTER_FILTER(EQ, eq, vf);
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REGISTER_FILTER(EXTRACTPLANES, extractplanes, vf);
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REGISTER_FILTER(FADE, fade, vf);
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REGISTER_FILTER(FIELD, field, vf);
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@ -30,8 +30,8 @@
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#include "libavutil/version.h"
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#define LIBAVFILTER_VERSION_MAJOR 5
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#define LIBAVFILTER_VERSION_MINOR 8
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#define LIBAVFILTER_VERSION_MICRO 101
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#define LIBAVFILTER_VERSION_MINOR 9
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#define LIBAVFILTER_VERSION_MICRO 100
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#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
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LIBAVFILTER_VERSION_MINOR, \
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@ -0,0 +1,270 @@
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/*
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* Original MPlayer filters by Richard Felker, Hampa Hug, Daniel Moreno,
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* and Michael Niedermeyer.
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*
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* Copyright (c) 2014 James Darnley <james.darnley@gmail.com>
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* Copyright (c) 2015 Arwa Arif <arwaarif1994@gmail.com>
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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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/**
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* @file
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* very simple video equalizer
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*/
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/**
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* TODO:
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* - Add support to process_command
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*/
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#include "libavfilter/internal.h"
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#include "libavutil/common.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "vf_eq.h"
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static void create_lut(EQParameters *param)
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{
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int i;
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double g = 1.0 / param->gamma;
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double lw = 1.0 - param->gamma_weight;
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for (i = 0; i < 256; i++) {
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double v = i / 255.0;
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v = param->contrast * (v - 0.5) + 0.5 + param->brightness;
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if (v <= 0.0) {
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param->lut[i] = 0;
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} else {
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v = v * lw + pow(v, g) * param->gamma_weight;
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if (v >= 1.0)
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param->lut[i] = 255;
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else
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param->lut[i] = 256.0 * v;
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}
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}
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param->lut_clean = 1;
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}
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static void apply_lut(EQParameters *param, uint8_t *dst, int dst_stride,
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uint8_t *src, int src_stride, int w, int h)
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{
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int x, y;
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if (!param->lut_clean)
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create_lut(param);
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++) {
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dst[y * dst_stride + x] = param->lut[src[y * src_stride + x]];
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}
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}
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}
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static void process_c(EQParameters *param, uint8_t *dst, int dst_stride,
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uint8_t *src, int src_stride, int w, int h)
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{
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int x, y, pel;
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int contrast = (int) (param->contrast * 256 * 16);
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int brightness = ((int) (100.0 * param->brightness + 100.0) * 511) / 200 - 128 - contrast / 32;
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++) {
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pel = ((src[y * src_stride + x] * contrast) >> 12) + brightness;
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if (pel & 768)
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pel = (-pel) >> 31;
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dst[y * dst_stride + x] = pel;
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}
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}
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}
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static void check_values(EQParameters *param, EQContext *eq)
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{
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if (param->contrast == 1.0 && param->brightness == 0.0 && param->gamma == 1.0)
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param->adjust = NULL;
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else if (param->gamma == 1.0)
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param->adjust = eq->process;
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else
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param->adjust = apply_lut;
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}
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static void set_contrast(EQContext *eq)
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{
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eq->param[0].contrast = eq->contrast;
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eq->param[0].lut_clean = 0;
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check_values(&eq->param[0], eq);
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}
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static void set_brightness(EQContext *eq)
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{
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eq->param[0].brightness = eq->brightness;
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eq->param[0].lut_clean = 0;
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check_values(&eq->param[0], eq);
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}
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static void set_gamma(EQContext *eq)
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{
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int i;
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eq->param[0].gamma = eq->gamma * eq->gamma_g;
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eq->param[1].gamma = sqrt(eq->gamma_b / eq->gamma_g);
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eq->param[2].gamma = sqrt(eq->gamma_r / eq->gamma_g);
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for (i = 0; i < 3; i++) {
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eq->param[i].gamma_weight = eq->gamma_weight;
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eq->param[i].lut_clean = 0;
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check_values(&eq->param[i], eq);
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}
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}
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static void set_saturation(EQContext *eq)
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{
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int i;
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for (i = 1; i < 3; i++) {
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eq->param[i].contrast = eq->saturation;
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eq->param[i].lut_clean = 0;
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check_values(&eq->param[i], eq);
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}
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}
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static int initialize(AVFilterContext *ctx)
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{
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EQContext *eq = ctx->priv;
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eq->process = process_c;
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if (ARCH_X86)
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ff_eq_init_x86(eq);
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set_gamma(eq);
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set_contrast(eq);
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set_brightness(eq);
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set_saturation(eq);
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return 0;
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}
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum AVPixelFormat pixel_fmts_eq[] = {
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AV_PIX_FMT_GRAY8,
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AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_YUV411P,
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AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV422P,
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AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_NONE
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};
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ff_set_common_formats(ctx, ff_make_format_list(pixel_fmts_eq));
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return 0;
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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AVFilterContext *ctx = inlink->dst;
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AVFilterLink *outlink = inlink->dst->outputs[0];
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EQContext *eq = ctx->priv;
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AVFrame *out;
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const AVPixFmtDescriptor *desc;
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int i;
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out = ff_get_video_buffer(outlink, inlink->w, inlink->h);
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if (!out)
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return AVERROR(ENOMEM);
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av_frame_copy_props(out, in);
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desc = av_pix_fmt_desc_get(inlink->format);
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for (i = 0; i < desc->nb_components; i++) {
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int w = inlink->w;
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int h = inlink->h;
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if (i == 1 || i == 2) {
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w = FF_CEIL_RSHIFT(w, desc->log2_chroma_w);
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h = FF_CEIL_RSHIFT(h, desc->log2_chroma_h);
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}
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if (eq->param[i].adjust)
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eq->param[i].adjust(&eq->param[i], out->data[i], out->linesize[i],
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in->data[i], in->linesize[i], w, h);
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else
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av_image_copy_plane(out->data[i], out->linesize[i],
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in->data[i], in->linesize[i], w, h);
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}
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return ff_filter_frame(outlink, out);
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}
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static const AVFilterPad eq_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = filter_frame,
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},
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{ NULL }
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};
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static const AVFilterPad eq_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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},
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{ NULL }
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};
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#define OFFSET(x) offsetof(EQContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption eq_options[] = {
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{ "contrast", "set the contrast adjustment, negative values give a negative image",
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OFFSET(contrast), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, -2.0, 2.0, FLAGS },
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{ "brightness", "set the brightness adjustment",
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OFFSET(brightness), AV_OPT_TYPE_DOUBLE, {.dbl = 0.0}, -1.0, 1.0, FLAGS },
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{ "saturation", "set the saturation adjustment",
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OFFSET(saturation), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.0, 3.0, FLAGS },
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{ "gamma", "set the initial gamma value",
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OFFSET(gamma), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.1, 10.0, FLAGS },
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{ "gamma_r", "gamma value for red",
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OFFSET(gamma_r), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.1, 10.0, FLAGS },
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{ "gamma_g", "gamma value for green",
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OFFSET(gamma_g), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.1, 10.0, FLAGS },
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{ "gamma_b", "gamma value for blue",
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OFFSET(gamma_b), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.1, 10.0, FLAGS },
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{ "gamma_weight", "set the gamma weight which reduces the effect of gamma on bright areas",
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OFFSET(gamma_weight), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.0, 1.0, FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(eq);
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AVFilter ff_vf_eq = {
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.name = "eq",
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.description = NULL_IF_CONFIG_SMALL("Adjust brightness, contrast, gamma, and saturation."),
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.priv_size = sizeof(EQContext),
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.priv_class = &eq_class,
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.inputs = eq_inputs,
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.outputs = eq_outputs,
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.query_formats = query_formats,
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.init = initialize,
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};
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@ -0,0 +1,60 @@
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/*
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* Original MPlayer filters by Richard Felker, Hampa Hug, Daniel Moreno,
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* and Michael Niedermeyer.
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*
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* Copyright (c) 2014 James Darnley <james.darnley@gmail.com>
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* Copyright (c) 2015 Arwa Arif <arwaarif1994@gmail.com>
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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
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* 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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#ifndef AVFILTER_EQ_H
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#define AVFILTER_EQ_H
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#include "avfilter.h"
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typedef struct EQParameters {
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void (*adjust)(struct EQParameters *eq, uint8_t *dst, int dst_stride,
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uint8_t *src, int src_stride, int w, int h);
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uint8_t lut[256];
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double brightness, contrast, gamma, gamma_weight;
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int lut_clean;
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} EQParameters;
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typedef struct {
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const AVClass *class;
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EQParameters param[3];
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double contrast;
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double brightness;
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double saturation;
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double gamma;
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double gamma_weight;
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double gamma_r, gamma_g, gamma_b;
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void (*process)(struct EQParameters *par, uint8_t *dst, int dst_stride,
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uint8_t *src, int src_stride, int w, int h);
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} EQContext;
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void ff_eq_init_x86(EQContext *eq);
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#endif /* AVFILTER_EQ_H */
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@ -1,3 +1,4 @@
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OBJS-$(CONFIG_EQ_FILTER) += x86/vf_eq.o
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OBJS-$(CONFIG_FSPP_FILTER) += x86/vf_fspp_init.o
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OBJS-$(CONFIG_GRADFUN_FILTER) += x86/vf_gradfun_init.o
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OBJS-$(CONFIG_HQDN3D_FILTER) += x86/vf_hqdn3d_init.o
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@ -0,0 +1,96 @@
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/*
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*
|
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* Original MPlayer filters by Richard Felker.
|
||||
*
|
||||
* This file is part of FFmpeg.
|
||||
*
|
||||
* FFmpeg is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 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 General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU 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 "libavutil/attributes.h"
|
||||
#include "libavutil/cpu.h"
|
||||
#include "libavutil/mem.h"
|
||||
#include "libavutil/x86/asm.h"
|
||||
#include "libavfilter/vf_eq.h"
|
||||
|
||||
#if HAVE_MMX_INLINE && HAVE_6REGS
|
||||
static void process_MMX(EQParameters *param, uint8_t *dst, int dst_stride,
|
||||
uint8_t *src, int src_stride, int w, int h)
|
||||
{
|
||||
int i;
|
||||
int pel;
|
||||
int dstep = dst_stride - w;
|
||||
int sstep = src_stride - w;
|
||||
short brvec[4];
|
||||
short contvec[4];
|
||||
int contrast = (int) (param->contrast * 256 * 16);
|
||||
int brightness = ((int) (100.0 * param->brightness + 100.0) * 511) / 200 - 128 - contrast / 32;
|
||||
|
||||
brvec[0] = brvec[1] = brvec[2] = brvec[3] = brightness;
|
||||
contvec[0] = contvec[1] = contvec[2] = contvec[3] = contrast;
|
||||
|
||||
while (h--) {
|
||||
__asm__ volatile (
|
||||
"movq (%5), %%mm3 \n\t"
|
||||
"movq (%6), %%mm4 \n\t"
|
||||
"pxor %%mm0, %%mm0 \n\t"
|
||||
"movl %4, %%eax \n\t"
|
||||
".p2align 4 \n\t"
|
||||
"1: \n\t"
|
||||
"movq (%0), %%mm1 \n\t"
|
||||
"movq (%0), %%mm2 \n\t"
|
||||
"punpcklbw %%mm0, %%mm1\n\t"
|
||||
"punpckhbw %%mm0, %%mm2\n\t"
|
||||
"psllw $4, %%mm1 \n\t"
|
||||
"psllw $4, %%mm2 \n\t"
|
||||
"pmulhw %%mm4, %%mm1 \n\t"
|
||||
"pmulhw %%mm4, %%mm2 \n\t"
|
||||
"paddw %%mm3, %%mm1 \n\t"
|
||||
"paddw %%mm3, %%mm2 \n\t"
|
||||
"packuswb %%mm2, %%mm1 \n\t"
|
||||
"add $8, %0 \n\t"
|
||||
"movq %%mm1, (%1) \n\t"
|
||||
"add $8, %1 \n\t"
|
||||
"decl %%eax \n\t"
|
||||
"jnz 1b \n\t"
|
||||
: "=r" (src), "=r" (dst)
|
||||
: "0" (src), "1" (dst), "r" (w>>3), "r" (brvec), "r" (contvec)
|
||||
: "%eax"
|
||||
);
|
||||
|
||||
for (i = w&7; i; i--) {
|
||||
pel = ((*src++ * contrast) >> 12) + brightness;
|
||||
if (pel & 768)
|
||||
pel = (-pel) >> 31;
|
||||
*dst++ = pel;
|
||||
}
|
||||
|
||||
src += sstep;
|
||||
dst += dstep;
|
||||
}
|
||||
__asm__ volatile ( "emms \n\t" ::: "memory" );
|
||||
}
|
||||
#endif
|
||||
|
||||
av_cold void ff_eq_init_x86(EQContext *eq)
|
||||
{
|
||||
#if HAVE_MMX_INLINE && HAVE_6REGS
|
||||
int cpu_flags = av_get_cpu_flags();
|
||||
|
||||
if (cpu_flags & AV_CPU_FLAG_MMX) {
|
||||
eq->process = process_MMX;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
Loading…
Reference in New Issue