From 4c38e960d0ca81b78dec1589275a5274dde21c8e Mon Sep 17 00:00:00 2001 From: Arwa Arif Date: Mon, 19 Jan 2015 03:56:48 +0530 Subject: avfilter: Port mp=eq/eq2 to lavfi Code adapted from James Darnley's port Some fixes from Paul B Mahol Signed-off-by: Michael Niedermayer --- configure | 1 + doc/filters.texi | 43 ++++++++ libavfilter/Makefile | 1 + libavfilter/allfilters.c | 1 + libavfilter/version.h | 4 +- libavfilter/vf_eq.c | 270 +++++++++++++++++++++++++++++++++++++++++++++++ libavfilter/vf_eq.h | 60 +++++++++++ libavfilter/x86/Makefile | 1 + libavfilter/x86/vf_eq.c | 96 +++++++++++++++++ 9 files changed, 475 insertions(+), 2 deletions(-) create mode 100644 libavfilter/vf_eq.c create mode 100644 libavfilter/vf_eq.h create mode 100644 libavfilter/x86/vf_eq.c diff --git a/configure b/configure index 0b6be39c3d..9fcdaee2c8 100755 --- a/configure +++ b/configure @@ -2581,6 +2581,7 @@ delogo_filter_deps="gpl" deshake_filter_select="pixelutils" drawtext_filter_deps="libfreetype" ebur128_filter_deps="gpl" +eq_filter_deps="gpl" flite_filter_deps="libflite" frei0r_filter_deps="frei0r dlopen" frei0r_src_filter_deps="frei0r dlopen" diff --git a/doc/filters.texi b/doc/filters.texi index 64384d034c..ced6aea4ca 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -4335,6 +4335,49 @@ edgedetect=mode=colormix:high=0 @end example @end itemize +@section eq +Set brightness, contrast, saturation and approximate gamma adjustment. + +The filter accepts the following options: + +@table @option +@item contrast +Set the contrast value. It accepts a float value in range @code{-2.0} to +@code{2.0}. The default value is @code{0.0}. + +@item brightness +Set the brightness value. It accepts a float value in range @code{-1.0} to +@code{1.0}. The default value is @code{0.0}. + +@item saturation +Set the saturation value. It accepts a float value in range @code{0.0} to +@code{3.0}. The default value is @code{1.0}. + +@item gamma +Set the gamma value. It accepts a float value in range @code{0.1} to @code{10.0}. +The default value is @code{1.0}. + +@item gamma_r +Set the gamma value for red. It accepts a float value in range +@code{0.1} to @code{10.0}. The default value is @code{1.0}. + +@item gamma_g +Set the gamma value for green. It accepts a float value in range +@code{0.1} to @code{10.0}. The default value is @code{1.0}. + +@item gamma_b +Set the gamma value for blue. It accepts a float value in range +@code{0.1} to @code{10.0}. The default value is @code{1.0}. + +@item gamma_weight +Can be used to reduce the effect of a high gamma value on bright image areas, +e.g. keep them from getting overamplified and just plain white. It accepts a +float value in range @code{0.0} to @code{1.0}.A value of @code{0.0} turns the +gamma correction all the way down while @code{1.0} leaves it at its full strength. +Default is @code{1.0}. + +@end table + @section extractplanes Extract color channel components from input video stream into diff --git a/libavfilter/Makefile b/libavfilter/Makefile index f7285b372b..d14418c871 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -116,6 +116,7 @@ OBJS-$(CONFIG_DRAWGRID_FILTER) += vf_drawbox.o OBJS-$(CONFIG_DRAWTEXT_FILTER) += vf_drawtext.o OBJS-$(CONFIG_ELBG_FILTER) += vf_elbg.o OBJS-$(CONFIG_EDGEDETECT_FILTER) += vf_edgedetect.o +OBJS-$(CONFIG_EQ_FILTER) += vf_eq.o OBJS-$(CONFIG_EXTRACTPLANES_FILTER) += vf_extractplanes.o OBJS-$(CONFIG_FADE_FILTER) += vf_fade.o OBJS-$(CONFIG_FIELD_FILTER) += vf_field.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index 028e3ea2d2..f4af8eca13 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -132,6 +132,7 @@ void avfilter_register_all(void) REGISTER_FILTER(DRAWTEXT, drawtext, vf); REGISTER_FILTER(EDGEDETECT, edgedetect, vf); REGISTER_FILTER(ELBG, elbg, vf); + REGISTER_FILTER(EQ, eq, vf); REGISTER_FILTER(EXTRACTPLANES, extractplanes, vf); REGISTER_FILTER(FADE, fade, vf); REGISTER_FILTER(FIELD, field, vf); diff --git a/libavfilter/version.h b/libavfilter/version.h index 01a9348296..e6772890f2 100644 --- a/libavfilter/version.h +++ b/libavfilter/version.h @@ -30,8 +30,8 @@ #include "libavutil/version.h" #define LIBAVFILTER_VERSION_MAJOR 5 -#define LIBAVFILTER_VERSION_MINOR 8 -#define LIBAVFILTER_VERSION_MICRO 101 +#define LIBAVFILTER_VERSION_MINOR 9 +#define LIBAVFILTER_VERSION_MICRO 100 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \ LIBAVFILTER_VERSION_MINOR, \ diff --git a/libavfilter/vf_eq.c b/libavfilter/vf_eq.c new file mode 100644 index 0000000000..60822dfa24 --- /dev/null +++ b/libavfilter/vf_eq.c @@ -0,0 +1,270 @@ +/* + * Original MPlayer filters by Richard Felker, Hampa Hug, Daniel Moreno, + * and Michael Niedermeyer. + * + * Copyright (c) 2014 James Darnley + * Copyright (c) 2015 Arwa Arif + * + * 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. + */ + +/** + * @file + * very simple video equalizer + */ + +/** + * TODO: + * - Add support to process_command + */ + +#include "libavfilter/internal.h" +#include "libavutil/common.h" +#include "libavutil/imgutils.h" +#include "libavutil/opt.h" +#include "libavutil/pixdesc.h" +#include "vf_eq.h" + +static void create_lut(EQParameters *param) +{ + int i; + double g = 1.0 / param->gamma; + double lw = 1.0 - param->gamma_weight; + + for (i = 0; i < 256; i++) { + double v = i / 255.0; + v = param->contrast * (v - 0.5) + 0.5 + param->brightness; + + if (v <= 0.0) { + param->lut[i] = 0; + } else { + v = v * lw + pow(v, g) * param->gamma_weight; + + if (v >= 1.0) + param->lut[i] = 255; + else + param->lut[i] = 256.0 * v; + } + } + + param->lut_clean = 1; +} + +static void apply_lut(EQParameters *param, uint8_t *dst, int dst_stride, + uint8_t *src, int src_stride, int w, int h) +{ + int x, y; + + if (!param->lut_clean) + create_lut(param); + + for (y = 0; y < h; y++) { + for (x = 0; x < w; x++) { + dst[y * dst_stride + x] = param->lut[src[y * src_stride + x]]; + } + } +} + +static void process_c(EQParameters *param, uint8_t *dst, int dst_stride, + uint8_t *src, int src_stride, int w, int h) +{ + int x, y, pel; + + int contrast = (int) (param->contrast * 256 * 16); + int brightness = ((int) (100.0 * param->brightness + 100.0) * 511) / 200 - 128 - contrast / 32; + + for (y = 0; y < h; y++) { + for (x = 0; x < w; x++) { + pel = ((src[y * src_stride + x] * contrast) >> 12) + brightness; + + if (pel & 768) + pel = (-pel) >> 31; + + dst[y * dst_stride + x] = pel; + } + } +} + +static void check_values(EQParameters *param, EQContext *eq) +{ + if (param->contrast == 1.0 && param->brightness == 0.0 && param->gamma == 1.0) + param->adjust = NULL; + else if (param->gamma == 1.0) + param->adjust = eq->process; + else + param->adjust = apply_lut; +} + +static void set_contrast(EQContext *eq) +{ + eq->param[0].contrast = eq->contrast; + eq->param[0].lut_clean = 0; + check_values(&eq->param[0], eq); +} + +static void set_brightness(EQContext *eq) +{ + eq->param[0].brightness = eq->brightness; + eq->param[0].lut_clean = 0; + check_values(&eq->param[0], eq); +} + +static void set_gamma(EQContext *eq) +{ + int i; + eq->param[0].gamma = eq->gamma * eq->gamma_g; + eq->param[1].gamma = sqrt(eq->gamma_b / eq->gamma_g); + eq->param[2].gamma = sqrt(eq->gamma_r / eq->gamma_g); + + for (i = 0; i < 3; i++) { + eq->param[i].gamma_weight = eq->gamma_weight; + eq->param[i].lut_clean = 0; + check_values(&eq->param[i], eq); + } +} + +static void set_saturation(EQContext *eq) +{ + int i; + for (i = 1; i < 3; i++) { + eq->param[i].contrast = eq->saturation; + eq->param[i].lut_clean = 0; + check_values(&eq->param[i], eq); + } +} + +static int initialize(AVFilterContext *ctx) +{ + EQContext *eq = ctx->priv; + + eq->process = process_c; + + if (ARCH_X86) + ff_eq_init_x86(eq); + + set_gamma(eq); + set_contrast(eq); + set_brightness(eq); + set_saturation(eq); + + return 0; +} + +static int query_formats(AVFilterContext *ctx) +{ + static const enum AVPixelFormat pixel_fmts_eq[] = { + AV_PIX_FMT_GRAY8, + AV_PIX_FMT_YUV410P, + AV_PIX_FMT_YUV411P, + AV_PIX_FMT_YUV420P, + AV_PIX_FMT_YUV422P, + AV_PIX_FMT_YUV444P, + AV_PIX_FMT_NONE + }; + + ff_set_common_formats(ctx, ff_make_format_list(pixel_fmts_eq)); + + return 0; +} + +static int filter_frame(AVFilterLink *inlink, AVFrame *in) +{ + AVFilterContext *ctx = inlink->dst; + AVFilterLink *outlink = inlink->dst->outputs[0]; + EQContext *eq = ctx->priv; + AVFrame *out; + const AVPixFmtDescriptor *desc; + int i; + + out = ff_get_video_buffer(outlink, inlink->w, inlink->h); + if (!out) + return AVERROR(ENOMEM); + + av_frame_copy_props(out, in); + desc = av_pix_fmt_desc_get(inlink->format); + + for (i = 0; i < desc->nb_components; i++) { + int w = inlink->w; + int h = inlink->h; + + if (i == 1 || i == 2) { + w = FF_CEIL_RSHIFT(w, desc->log2_chroma_w); + h = FF_CEIL_RSHIFT(h, desc->log2_chroma_h); + } + + if (eq->param[i].adjust) + eq->param[i].adjust(&eq->param[i], out->data[i], out->linesize[i], + in->data[i], in->linesize[i], w, h); + else + av_image_copy_plane(out->data[i], out->linesize[i], + in->data[i], in->linesize[i], w, h); + } + + return ff_filter_frame(outlink, out); +} +static const AVFilterPad eq_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .filter_frame = filter_frame, + }, + { NULL } +}; + +static const AVFilterPad eq_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + }, + { NULL } +}; + +#define OFFSET(x) offsetof(EQContext, x) +#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM + +static const AVOption eq_options[] = { + { "contrast", "set the contrast adjustment, negative values give a negative image", + OFFSET(contrast), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, -2.0, 2.0, FLAGS }, + { "brightness", "set the brightness adjustment", + OFFSET(brightness), AV_OPT_TYPE_DOUBLE, {.dbl = 0.0}, -1.0, 1.0, FLAGS }, + { "saturation", "set the saturation adjustment", + OFFSET(saturation), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.0, 3.0, FLAGS }, + { "gamma", "set the initial gamma value", + OFFSET(gamma), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.1, 10.0, FLAGS }, + { "gamma_r", "gamma value for red", + OFFSET(gamma_r), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.1, 10.0, FLAGS }, + { "gamma_g", "gamma value for green", + OFFSET(gamma_g), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.1, 10.0, FLAGS }, + { "gamma_b", "gamma value for blue", + OFFSET(gamma_b), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.1, 10.0, FLAGS }, + { "gamma_weight", "set the gamma weight which reduces the effect of gamma on bright areas", + OFFSET(gamma_weight), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.0, 1.0, FLAGS }, + { NULL } +}; + +AVFILTER_DEFINE_CLASS(eq); + +AVFilter ff_vf_eq = { + .name = "eq", + .description = NULL_IF_CONFIG_SMALL("Adjust brightness, contrast, gamma, and saturation."), + .priv_size = sizeof(EQContext), + .priv_class = &eq_class, + .inputs = eq_inputs, + .outputs = eq_outputs, + .query_formats = query_formats, + .init = initialize, +}; diff --git a/libavfilter/vf_eq.h b/libavfilter/vf_eq.h new file mode 100644 index 0000000000..19995aa1f9 --- /dev/null +++ b/libavfilter/vf_eq.h @@ -0,0 +1,60 @@ +/* + * Original MPlayer filters by Richard Felker, Hampa Hug, Daniel Moreno, + * and Michael Niedermeyer. + * + * Copyright (c) 2014 James Darnley + * Copyright (c) 2015 Arwa Arif + * + * 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. + */ + +#ifndef AVFILTER_EQ_H +#define AVFILTER_EQ_H + +#include "avfilter.h" + +typedef struct EQParameters { + void (*adjust)(struct EQParameters *eq, uint8_t *dst, int dst_stride, + uint8_t *src, int src_stride, int w, int h); + + uint8_t lut[256]; + + double brightness, contrast, gamma, gamma_weight; + int lut_clean; +} EQParameters; + +typedef struct { + const AVClass *class; + + EQParameters param[3]; + + double contrast; + double brightness; + double saturation; + + double gamma; + double gamma_weight; + double gamma_r, gamma_g, gamma_b; + + void (*process)(struct EQParameters *par, uint8_t *dst, int dst_stride, + uint8_t *src, int src_stride, int w, int h); + +} EQContext; + +void ff_eq_init_x86(EQContext *eq); + +#endif /* AVFILTER_EQ_H */ diff --git a/libavfilter/x86/Makefile b/libavfilter/x86/Makefile index 27de5a50c4..49f45b630e 100644 --- a/libavfilter/x86/Makefile +++ b/libavfilter/x86/Makefile @@ -1,3 +1,4 @@ +OBJS-$(CONFIG_EQ_FILTER) += x86/vf_eq.o OBJS-$(CONFIG_FSPP_FILTER) += x86/vf_fspp_init.o OBJS-$(CONFIG_GRADFUN_FILTER) += x86/vf_gradfun_init.o OBJS-$(CONFIG_HQDN3D_FILTER) += x86/vf_hqdn3d_init.o diff --git a/libavfilter/x86/vf_eq.c b/libavfilter/x86/vf_eq.c new file mode 100644 index 0000000000..cfcc18f495 --- /dev/null +++ b/libavfilter/x86/vf_eq.c @@ -0,0 +1,96 @@ +/* + * + * 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 +} -- cgit v1.2.3