mirror of https://git.ffmpeg.org/ffmpeg.git
Implement libopencv smooth filter.
Originally committed as revision 25118 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini
parent
c12f7b2d2c
commit
6ebf0bfc17
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@ -35,6 +35,7 @@ version <next>:
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- MMS-HTTP support
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- G.722 ADPCM audio decoder
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- R10k video decoder
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- ocv_smooth filter
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version 0.6:
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@ -164,6 +164,7 @@ External library support:
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--enable-bzlib enable bzlib [autodetect]
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--enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
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--enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
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--enable-libopencv enable video filtering via libopencv [no]
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--enable-libdc1394 enable IIDC-1394 grabbing using libdc1394
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and libraw1394 [no]
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--enable-libdirac enable Dirac support via libdirac [no]
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@ -887,6 +888,7 @@ CONFIG_LIST="
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libnut
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libopencore_amrnb
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libopencore_amrwb
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libopencv
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libopenjpeg
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librtmp
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libschroedinger
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@ -1390,6 +1392,9 @@ rtp_protocol_select="udp_protocol"
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tcp_protocol_deps="network"
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udp_protocol_deps="network"
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# filters
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ocv_smooth_filter_deps="libopencv"
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# libraries
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avdevice_deps="avcodec avformat"
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avformat_deps="avcodec"
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@ -2713,6 +2718,8 @@ enabled libmp3lame && require libmp3lame lame/lame.h lame_init -lmp3lame
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enabled libnut && require libnut libnut.h nut_demuxer_init -lnut
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enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
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enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
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enabled libopencv && { check_lib opencv/cv.h cvCreateImageHeader $(pkg-config --libs opencv) ||
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die "ERROR: libopencv not found"; }
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enabled libopenjpeg && require libopenjpeg openjpeg.h opj_version -lopenjpeg
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enabled librtmp && { check_lib librtmp/rtmp.h RTMP_Socket $(pkg-config --libs librtmp) ||
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die "ERROR: librtmp not found or RTMP_Socket() missing, librtmp version must be >= 2.2.f"; }
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@ -2997,6 +3004,7 @@ echo "libmp3lame enabled ${libmp3lame-no}"
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echo "libnut enabled ${libnut-no}"
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echo "libopencore-amrnb support ${libopencore_amrnb-no}"
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echo "libopencore-amrwb support ${libopencore_amrwb-no}"
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echo "libopencv support ${libopencv-no}"
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echo "libopenjpeg enabled ${libopenjpeg-no}"
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echo "librtmp enabled ${librtmp-no}"
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echo "libschroedinger enabled ${libschroedinger-no}"
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@ -112,6 +112,33 @@ input to the vflip filter.
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Pass the video source unchanged to the output.
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@section ocv_smooth
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Apply smooth transform using libopencv.
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To enable this filter install libopencv library and headers and
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configure FFmpeg with --enable-libopencv.
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It accepts the following parameters:
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@var{type}:@var{param1}:@var{param2}:@var{param3}:@var{param4}.
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@var{type} is the type of smooth filter to apply, and can be one of
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the following value: "blur", "blur_no_scale", "median", "gaussian",
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"bilateral". The default value is "gaussian".
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@var{param1}, @var{param2}, @var{param3}, and @var{param4} are
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parameters whose meanings depend on smooth type. @var{param1} and
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@var{param2} accept integer positive values or 0, @var{param3} and
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@var{param4} accept float values.
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The default value for @var{param1} is 3, the default value for the
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other parameters is 0.
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These parameters corresponds to the parameters assigned to the
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libopencv function @code{cvSmooth}. Refer the official libopencv
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documentation for the exact meaning of the parameters:
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@url{http://opencv.willowgarage.com/documentation/c/image_filtering.html}
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@section pad
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Add paddings to the input image, and places the original input at the
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@ -23,6 +23,7 @@ OBJS-$(CONFIG_FORMAT_FILTER) += vf_format.o
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OBJS-$(CONFIG_HFLIP_FILTER) += vf_hflip.o
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OBJS-$(CONFIG_NOFORMAT_FILTER) += vf_format.o
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OBJS-$(CONFIG_NULL_FILTER) += vf_null.o
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OBJS-$(CONFIG_OCV_SMOOTH_FILTER) += vf_libopencv.o
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OBJS-$(CONFIG_PAD_FILTER) += vf_pad.o
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OBJS-$(CONFIG_PIXDESCTEST_FILTER) += vf_pixdesctest.o
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OBJS-$(CONFIG_PIXELASPECT_FILTER) += vf_aspect.o
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@ -43,6 +43,7 @@ void avfilter_register_all(void)
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REGISTER_FILTER (HFLIP, hflip, vf);
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REGISTER_FILTER (NOFORMAT, noformat, vf);
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REGISTER_FILTER (NULL, null, vf);
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REGISTER_FILTER (OCV_SMOOTH, ocv_smooth, vf);
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REGISTER_FILTER (PAD, pad, vf);
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REGISTER_FILTER (PIXDESCTEST, pixdesctest, vf);
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REGISTER_FILTER (PIXELASPECT, pixelaspect, vf);
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@ -25,8 +25,8 @@
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#include "libavutil/avutil.h"
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#define LIBAVFILTER_VERSION_MAJOR 1
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#define LIBAVFILTER_VERSION_MINOR 38
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#define LIBAVFILTER_VERSION_MICRO 3
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#define LIBAVFILTER_VERSION_MINOR 39
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#define LIBAVFILTER_VERSION_MICRO 0
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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 +1,156 @@
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/*
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* copyright Stefano Sabatini 2010
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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
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 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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* libopencv wrapper functions
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*/
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#include "opencv/cv.h"
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#include "opencv/cxtypes.h"
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#include "avfilter.h"
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static void fill_iplimage_from_picref(IplImage *img, const AVFilterBufferRef *picref, enum PixelFormat pixfmt)
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{
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IplImage *tmpimg;
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int depth, channels_nb;
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if (pixfmt == PIX_FMT_GRAY8) { depth = IPL_DEPTH_8U; channels_nb = 1; }
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else if (pixfmt == PIX_FMT_BGRA) { depth = IPL_DEPTH_8U; channels_nb = 4; }
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else if (pixfmt == PIX_FMT_BGR24) { depth = IPL_DEPTH_8U; channels_nb = 3; }
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else return;
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tmpimg = cvCreateImageHeader((CvSize){picref->video->w, picref->video->h}, depth, channels_nb);
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*img = *tmpimg;
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img->imageData = img->imageDataOrigin = picref->data[0];
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img->dataOrder = IPL_DATA_ORDER_PIXEL;
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img->origin = IPL_ORIGIN_TL;
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img->widthStep = picref->linesize[0];
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}
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static void fill_picref_from_iplimage(AVFilterBufferRef *picref, const IplImage *img, enum PixelFormat pixfmt)
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{
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picref->linesize[0] = img->widthStep;
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picref->data[0] = img->imageData;
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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 PixelFormat pix_fmts[] = {
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PIX_FMT_BGR24, PIX_FMT_BGRA, PIX_FMT_GRAY8, PIX_FMT_NONE
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};
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avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
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return 0;
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}
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static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { }
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#if CONFIG_OCV_SMOOTH_FILTER
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typedef struct {
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int type;
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int param1, param2;
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double param3, param4;
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} SmoothContext;
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static av_cold int smooth_init(AVFilterContext *ctx, const char *args, void *opaque)
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{
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SmoothContext *smooth = ctx->priv;
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char type_str[128] = "gaussian";
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smooth->param1 = 3;
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smooth->param2 = 0;
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smooth->param3 = 0.0;
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smooth->param4 = 0.0;
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if (args)
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sscanf(args, "%127[^:]:%d:%d:%lf:%lf", type_str, &smooth->param1, &smooth->param2, &smooth->param3, &smooth->param4);
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if (!strcmp(type_str, "blur" )) smooth->type = CV_BLUR;
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else if (!strcmp(type_str, "blur_no_scale")) smooth->type = CV_BLUR_NO_SCALE;
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else if (!strcmp(type_str, "median" )) smooth->type = CV_MEDIAN;
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else if (!strcmp(type_str, "gaussian" )) smooth->type = CV_GAUSSIAN;
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else if (!strcmp(type_str, "bilateral" )) smooth->type = CV_BILATERAL;
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else {
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av_log(ctx, AV_LOG_ERROR, "Smoothing type '%s' unknown\n.", type_str);
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return AVERROR(EINVAL);
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}
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if (smooth->param1 < 0 || !(smooth->param1%2)) {
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av_log(ctx, AV_LOG_ERROR,
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"Invalid value '%d' for param1, it has to be a positive odd number\n",
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smooth->param1);
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return AVERROR(EINVAL);
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}
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if ((smooth->type == CV_BLUR || smooth->type == CV_BLUR_NO_SCALE || smooth->type == CV_GAUSSIAN) &&
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(smooth->param2 < 0 || (smooth->param2 && !(smooth->param2%2)))) {
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av_log(ctx, AV_LOG_ERROR,
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"Invalid value '%d' for param2, it has to be zero or a positive odd number\n",
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smooth->param2);
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return AVERROR(EINVAL);
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}
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av_log(ctx, AV_LOG_INFO, "type:%s param1:%d param2:%d param3:%f param4:%f\n",
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type_str, smooth->param1, smooth->param2, smooth->param3, smooth->param4);
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return 0;
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}
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static void smooth_end_frame(AVFilterLink *inlink)
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{
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SmoothContext *smooth = inlink->dst->priv;
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AVFilterLink *outlink= inlink->dst->outputs[0];
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AVFilterBufferRef *inpicref = inlink ->cur_buf;
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AVFilterBufferRef *outpicref = outlink->out_buf;
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IplImage inimg, outimg;
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fill_iplimage_from_picref(&inimg , inpicref , inlink->format);
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fill_iplimage_from_picref(&outimg, outpicref, inlink->format);
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cvSmooth(&inimg, &outimg, smooth->type, smooth->param1, smooth->param2, smooth->param3, smooth->param4);
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fill_picref_from_iplimage(outpicref, &outimg, inlink->format);
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avfilter_unref_buffer(inpicref);
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avfilter_draw_slice(outlink, 0, outlink->h, 1);
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avfilter_end_frame(outlink);
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avfilter_unref_buffer(outpicref);
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}
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AVFilter avfilter_vf_ocv_smooth = {
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.name = "ocv_smooth",
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.description = "Apply smooth transform using libopencv.",
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.priv_size = sizeof(SmoothContext),
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.query_formats = query_formats,
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.init = smooth_init,
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.inputs = (AVFilterPad[]) {{ .name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.draw_slice = null_draw_slice,
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.end_frame = smooth_end_frame,
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.min_perms = AV_PERM_READ },
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{ .name = NULL}},
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.outputs = (AVFilterPad[]) {{ .name = "default",
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.type = AVMEDIA_TYPE_VIDEO, },
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{ .name = NULL}},
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};
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#endif /* CONFIG_OCV_SMOOTH_FILTER */
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