I have updated the patch.
I checked the output with many combinations of parameters. It is bitexact
now.
I am facing problems in rebasing against the latest master.
From f6c6a66b306475e3bc7977f59287c920f5e867a7 Mon Sep 17 00:00:00 2001
From: Arwa Arif <[email protected]>
Date: Mon, 19 Jan 2015 03:56:48 +0530
Subject: [PATCH] Port mp=eq/eq2 to FFmpeg
---
configure | 38 +++----
doc/filters.texi | 43 +++++++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/vf_eq.c | 285 ++++++++++++++++++++++++++++++++++++++++++++++
libavfilter/vf_eq.h | 63 ++++++++++
libavfilter/x86/Makefile | 1 +
libavfilter/x86/vf_eq.c | 96 ++++++++++++++++
8 files changed, 503 insertions(+), 25 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 c73562b..d122720 100755
--- a/configure
+++ b/configure
@@ -60,7 +60,6 @@ show_help(){
cat <<EOF
Usage: configure [options]
Options: [defaults in brackets after descriptions]
-
Help options:
--help print this message
--list-decoders show all available decoders
@@ -74,7 +73,6 @@ Help options:
--list-indevs show all available input devices
--list-outdevs show all available output devices
--list-filters show all available filters
-
Standard options:
--logfile=FILE log tests and output to FILE [config.log]
--disable-logging do not log configure debug information
@@ -90,14 +88,12 @@ Standard options:
--enable-rpath use rpath to allow installing libraries in paths
not part of the dynamic linker search path
use rpath when linking programs [USE WITH CARE]
-
Licensing options:
--enable-gpl allow use of GPL code, the resulting libs
and binaries will be under GPL [no]
--enable-version3 upgrade (L)GPL to version 3 [no]
--enable-nonfree allow use of nonfree code, the resulting libs
and binaries will be unredistributable [no]
-
Configuration options:
--disable-static do not build static libraries [no]
--enable-shared build shared libraries [no]
@@ -108,21 +104,18 @@ Configuration options:
--disable-all disable building components, libraries and programs
--enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
--enable-raise-major increase major version numbers in sonames [no]
-
Program options:
--disable-programs do not build command line programs
--disable-ffmpeg disable ffmpeg build
--disable-ffplay disable ffplay build
--disable-ffprobe disable ffprobe build
--disable-ffserver disable ffserver build
-
Documentation options:
--disable-doc do not build documentation
--disable-htmlpages do not build HTML documentation pages
--disable-manpages do not build man documentation pages
--disable-podpages do not build POD documentation pages
--disable-txtpages do not build text documentation pages
-
Component options:
--disable-avdevice disable libavdevice build
--disable-avcodec disable libavcodec build
@@ -147,13 +140,11 @@ Component options:
--disable-fft disable FFT code
--disable-faan disable floating point AAN (I)DCT code
--disable-pixelutils disable pixel utils in libavutil
-
Hardware accelerators:
--disable-dxva2 disable DXVA2 code [autodetect]
--disable-vaapi disable VAAPI code [autodetect]
--disable-vda disable VDA code [autodetect]
--disable-vdpau disable VDPAU code [autodetect]
-
Individual component options:
--disable-everything disable all components listed below
--disable-encoder=NAME disable encoder NAME
@@ -190,7 +181,6 @@ Individual component options:
--enable-filter=NAME enable filter NAME
--disable-filter=NAME disable filter NAME
--disable-filters disable all filters
-
External library support:
--enable-avisynth enable reading of AviSynth script files [no]
--disable-bzlib disable bzlib [autodetect]
@@ -226,6 +216,7 @@ External library support:
--enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
--enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
--enable-libopencv enable video filtering via libopencv [no]
+ --enable-libopenh264 enable H.264 encoding via OpenH264 [no]
--enable-libopenjpeg enable JPEG 2000 de/encoding via OpenJPEG [no]
--enable-libopus enable Opus de/encoding via libopus [no]
--enable-libpulse enable Pulseaudio input via libpulse [no]
@@ -273,7 +264,6 @@ External library support:
--enable-x11grab enable X11 grabbing (legacy) [no]
--disable-xlib disable xlib [autodetect]
--disable-zlib disable zlib [autodetect]
-
Toolchain options:
--arch=ARCH select architecture [$arch]
--cpu=CPU select the minimum required CPU (affects
@@ -320,7 +310,6 @@ Toolchain options:
--enable-pic build position-independent code
--enable-thumb compile for Thumb instruction set
--enable-lto use link-time optimization
-
Advanced options (experts only):
--malloc-prefix=PREFIX prefix malloc and related names with PREFIX
--disable-symver disable symbol versioning
@@ -330,7 +319,6 @@ Advanced options (experts only):
(faster, but may crash)
--enable-memalign-hack emulate memalign, interferes with memory debuggers
--sws-max-filter-size=N the max filter size swscale uses [$sws_max_filter_size_default]
-
Optimization options (experts only):
--disable-asm disable all assembly optimizations
--disable-altivec disable AltiVec optimizations
@@ -361,7 +349,6 @@ Optimization options (experts only):
--disable-mipsdspr2 disable MIPS DSP ASE R2 optimizations
--disable-mipsfpu disable floating point MIPS optimizations
--disable-fast-unaligned consider unaligned accesses slow
-
Developer options (useful when working on FFmpeg itself):
--disable-debug disable debugging symbols
--enable-debug=LEVEL set the debug level [$debuglevel]
@@ -389,7 +376,6 @@ Developer options (useful when working on FFmpeg itself):
(group) and PROB the probability associated with
NAME (default 0.5).
--random-seed=VALUE seed value for --enable/disable-random
-
NOTE: Object files are built at the place where configure is launched.
EOF
exit 0
@@ -420,7 +406,6 @@ warn(){
die(){
echolog "$@"
cat <<EOF
-
If you think configure made a mistake, make sure you are using the latest
version from Git. If the latest version fails, report the problem to the
[email protected] mailing list or IRC #ffmpeg on irc.freenode.net.
@@ -1367,6 +1352,7 @@ EXTERNAL_LIBRARY_LIST="
libopencore_amrnb
libopencore_amrwb
libopencv
+ libopenh264
libopenjpeg
libopus
libpulse
@@ -1640,7 +1626,6 @@ HEADERS_LIST="
asm_types_h
cdio_paranoia_h
cdio_paranoia_paranoia_h
- CL_cl_h
dev_bktr_ioctl_bt848_h
dev_bktr_ioctl_meteor_h
dev_ic_bt8xx_h
@@ -2363,6 +2348,7 @@ libopencore_amrnb_decoder_deps="libopencore_amrnb"
libopencore_amrnb_encoder_deps="libopencore_amrnb"
libopencore_amrnb_encoder_select="audio_frame_queue"
libopencore_amrwb_decoder_deps="libopencore_amrwb"
+libopenh264_encoder_deps="libopenh264"
libopenjpeg_decoder_deps="libopenjpeg"
libopenjpeg_encoder_deps="libopenjpeg"
libopus_decoder_deps="libopus"
@@ -2579,6 +2565,7 @@ 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"
@@ -2686,7 +2673,6 @@ docdir_default='${prefix}/share/doc/ffmpeg'
incdir_default='${prefix}/include'
libdir_default='${prefix}/lib'
mandir_default='${prefix}/share/man'
-shlibdir_default='${LIBDIR}'
# toolchain
ar_default="ar"
@@ -3220,6 +3206,7 @@ msvc_common_flags(){
-lavifil32) echo vfw32.lib ;;
-lavicap32) echo vfw32.lib user32.lib ;;
-l*) echo ${flag#-l}.lib ;;
+ -L*) echo -libpath:${flag#-L} ;;
*) echo $flag ;;
esac
done
@@ -4326,6 +4313,9 @@ echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFI
check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
+set_default libdir
+: ${shlibdir_default:="$libdir"}
+
set_default $PATHS_LIST
set_default nm
@@ -4426,7 +4416,7 @@ unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
EOF
od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
-if [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
+if [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
if ! enabled bigendian && enabled altivec ;then
enable vsx
fi
@@ -4769,7 +4759,6 @@ check_func_headers glob.h glob
enabled xlib &&
check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
-check_header cl/cl.h
check_header direct.h
check_header dlfcn.h
check_header dxva.h
@@ -4886,6 +4875,7 @@ enabled libnut && require libnut libnut.h nut_demuxer_init -lnut
enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
enabled libopencv && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
+enabled libopenh264 && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
enabled libopenjpeg && { check_lib openjpeg.h opj_version -lopenmj2 -DOPJ_STATIC ||
check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
@@ -5058,8 +5048,8 @@ enabled xlib &&
check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
if ! disabled libxcb; then
- check_pkg_config xcb xcb/xcb.h xcb_connect || {
- enabled libxcb && die "ERROR: libxcb not found";
+ check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
+ enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
} && disable x11grab && enable libxcb
if enabled libxcb; then
@@ -5694,7 +5684,7 @@ cat > $TMPH <<EOF
#define FFMPEG_CONFIG_H
#define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
#define FFMPEG_LICENSE "$(c_escape $license)"
-#define CONFIG_THIS_YEAR 2014
+#define CONFIG_THIS_YEAR 2015
#define FFMPEG_DATADIR "$(eval c_escape $datadir)"
#define AVCONV_DATADIR "$(eval c_escape $datadir)"
#define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
@@ -5778,7 +5768,6 @@ prefix=$prefix
exec_prefix=\${prefix}
libdir=$libdir
includedir=$incdir
-
Name: $name
Description: $comment
Version: $version
@@ -5798,7 +5787,6 @@ prefix=
exec_prefix=
libdir=\${pcfiledir}/../../../$name
includedir=${includedir}
-
Name: $name
Description: $comment
Version: $version
diff --git a/doc/filters.texi b/doc/filters.texi
index d7b2273..f3c15ad 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -4320,6 +4320,49 @@ edgedetect=mode=colormix:high=0
@end example
@end itemize
+@section eq
+Set brightness, contrast, saturation and gamma adjustment.
+
+The filter accepts the following options:
+
+@table @option
+@item gamma
+Set the gamma value. It accepts a float value in range @code{0.1} to @code{10.0}.
+The default value is @code{1.0}.
+
+@item contrast
+Set the contrast value. It accepts a float value in range @code{-2.0} to
+@code{2.0}. The default value is @code{0.0}.
+
+@item brightness
+Set the brightness value. It accepts a float value in range @code{-1.0} to
+@code{1.0}. The default value is @code{0.0}.
+
+@item saturation
+Set the saturation value. It accepts a float value in range @code{0.0} to
+@code{3.0}. The default value is @code{1.0}.
+
+@item gamma_y
+Set the gamma value for the luma plane. It accepts a float value in range
+@code{0.1} to @code{10.0}. The default value is @code{1.0}.
+
+@item gamma_u
+Set the gamma value for 1st chroma plane. It accepts a float value in range
+@code{0.1} to @code{10.0}. The default value is @code{1.0}.
+
+@item gamma_v
+Set the gamma value for 2nd chroma plane. It accepts a float value in range
+@code{0.1} to @code{10.0}. The default value is @code{1.0}.
+
+@item gamma_weight
+Can be used to reduce the effect of a high gamma value on bright image areas,
+e.g. keep them from getting overamplified and just plain white. It accepts a
+float value in range @code{0.0} to @code{1.0}.A value of @code{0.0} turns the
+gamma correction all the way down while @code{1.0} leaves it at its full strength.
+Default is @code{1.0}.
+
+@end table
+
@section extractplanes
Extract color channel components from input video stream into
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index e43d76d..8e94033 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -116,6 +116,7 @@ OBJS-$(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 381da4f..db34cb9 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/vf_eq.c b/libavfilter/vf_eq.c
new file mode 100644
index 0000000..f8b6fcb
--- /dev/null
+++ b/libavfilter/vf_eq.c
@@ -0,0 +1,285 @@
+/*
+ * Original MPlayer filters by Richard Felker, Hampa Hug, Daniel Moreno,
+ * and Michael Niedermeyer.
+ *
+ * Copyright (c) 2014 James Darnley <[email protected]>
+ * Copyright (c) 2015 Arwa Arif <[email protected]>
+ *
+ * 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)
+{
+ unsigned i;
+ double g, v;
+ double lw, gw;
+
+ g = param->gamma;
+ gw = param->gamma_weight;
+ lw = 1.0 - gw;
+
+ g = 1.0 / g;
+
+ for (i = 0; i < 256; i++) {
+ v = (double) 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)*gw;
+ if (v >= 1.0)
+ param->lut[i] = 255;
+ else
+ param->lut[i] = (unsigned char) (256.0 * v);
+ }
+ }
+
+ for (i = 0; i < 256 * 256; i++)
+ param->lut16[i] = param->lut[i & 0xFF] + (param->lut[i >> 8] << 8);
+
+ 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) >> 16) + 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_u;
+ eq->param[1].gamma = sqrt(eq->gamma_v / eq->gamma_u);
+ eq->param[2].gamma = sqrt(eq->gamma_y / eq->gamma_u);
+
+ 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;
+ int i;
+
+ for (i = 0; i < 3; i++) {
+ eq->param[i].contrast = eq->param[i].contrast;
+ eq->param[i].brightness = eq->param[i].brightness;
+ }
+
+ 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[] = {
+ { "gamma", "set the initial gamma value",
+ OFFSET(gamma), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.1, 10.0, FLAGS },
+ { "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_y", "gamma value for the luma plane",
+ OFFSET(gamma_y), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.1, 10.0, FLAGS },
+ { "gamma_u", "gamma value for the 1st chroma plane",
+ OFFSET(gamma_u), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0.1, 10.0, FLAGS },
+ { "gamma_v", "gamma value for the 2nd chroma plane",
+ OFFSET(gamma_v), 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 0000000..cf172cc
--- /dev/null
+++ b/libavfilter/vf_eq.h
@@ -0,0 +1,63 @@
+/*
+ * Original MPlayer filters by Richard Felker, Hampa Hug, Daniel Moreno,
+ * and Michael Niedermeyer.
+ *
+ * Copyright (c) 2014 James Darnley <[email protected]>
+ * Copyright (c) 2015 Arwa Arif <[email protected]>
+ *
+ * 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];
+ uint16_t lut16[256*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_y, gamma_u, gamma_v;
+
+ 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 b93154e..8222e3f 100644
--- a/libavfilter/x86/Makefile
+++ b/libavfilter/x86/Makefile
@@ -1,3 +1,4 @@
+OBJS-$(CONFIG_EQ_FILTER) += x86/vf_eq.o
OBJS-$(CONFIG_FSPP_FILTER) += x86/vf_fspp.o
OBJS-$(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 0000000..492f2ab
--- /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
+ int cpu_flags = av_get_cpu_flags();
+
+ if (cpu_flags & AV_CPU_FLAG_MMX) {
+ eq->process = process_MMX;
+ }
+#endif
+}
--
1.7.9.5
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