[PATCH] Port libmpcodecs hqdn3d filter.
Stefano Sabatini
stefano.sabatini-lala
Thu Dec 2 21:33:42 CET 2010
Patch by Baptiste with some fixes by me.
---
Changelog | 1 +
configure | 1 +
doc/filters.texi | 27 ++++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/vf_hqdn3d.c | 345 ++++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 376 insertions(+), 0 deletions(-)
create mode 100644 libavfilter/vf_hqdn3d.c
diff --git a/Changelog b/Changelog
index 5890aa7..9d43e1d 100644
--- a/Changelog
+++ b/Changelog
@@ -61,6 +61,7 @@ version <next>:
- IEC 61937 demuxer
- Mobotix .mxg demuxer
- frei0r source added
+- hqdn3d filter added
version 0.6:
diff --git a/configure b/configure
index a882501..9e89332 100755
--- a/configure
+++ b/configure
@@ -1407,6 +1407,7 @@ blackframe_filter_deps="gpl"
cropdetect_filter_deps="gpl"
frei0r_filter_deps="frei0r dlopen strtok_r"
frei0r_src_filter_deps="frei0r dlopen strtok_r"
+hqdn3d_filter_deps="gpl"
ocv_smooth_filter_deps="libopencv"
yadif_filter_deps="gpl"
diff --git a/doc/filters.texi b/doc/filters.texi
index 9583e4e..7e48b83 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -344,6 +344,33 @@ For example to horizontally flip the video in input with
ffmpeg -i in.avi -vf "hflip" out.avi
@end example
+ at section hqdn3d
+
+High precision/quality 3d denoise filter. This filter aims to reduce
+image noise producing smooth images and making still images really
+still. It should enhance compressibility.
+
+It accepts the following optional parameters:
+ at var{luma_spatial}:@var{chroma_spatial}:@var{luma_tmp}:@var{chroma_tmp}
+
+ at table @option
+ at item luma_spatial
+a non-negative float number which specifies spatial luma strength,
+defaults to 4.0
+
+ at item chroma_spatial
+a non-negative float number which specifies spatial chroma strength,
+defaults to 3.0*@var{luma_spatial}/4.0
+
+ at item luma_tmp
+a float number which specifies luma temporal strength, defaults to
+6.0*@var{luma_spatial}/4.0
+
+ at item chroma_tmp
+a float number which specifies chroma temporal strength, defaults to
+ at var{luma_tmp}*@var{chroma_spatial}/@var{luma_spatial}
+ at end table
+
@section noformat
Force libavfilter not to use any of the specified pixel formats for the
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 792e845..aece3ab 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -27,6 +27,7 @@ OBJS-$(CONFIG_FIFO_FILTER) += vf_fifo.o
OBJS-$(CONFIG_FORMAT_FILTER) += vf_format.o
OBJS-$(CONFIG_FREI0R_FILTER) += vf_frei0r.o
OBJS-$(CONFIG_HFLIP_FILTER) += vf_hflip.o
+OBJS-$(CONFIG_HQDN3D_FILTER) += vf_hqdn3d.o
OBJS-$(CONFIG_NOFORMAT_FILTER) += vf_format.o
OBJS-$(CONFIG_NULL_FILTER) += vf_null.o
OBJS-$(CONFIG_OCV_SMOOTH_FILTER) += vf_libopencv.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 4ecb00e..8ce4f1b 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -48,6 +48,7 @@ void avfilter_register_all(void)
REGISTER_FILTER (FORMAT, format, vf);
REGISTER_FILTER (FREI0R, frei0r, vf);
REGISTER_FILTER (HFLIP, hflip, vf);
+ REGISTER_FILTER (HQDN3D, hqdn3d, vf);
REGISTER_FILTER (NOFORMAT, noformat, vf);
REGISTER_FILTER (NULL, null, vf);
REGISTER_FILTER (OCV_SMOOTH, ocv_smooth, vf);
diff --git a/libavfilter/vf_hqdn3d.c b/libavfilter/vf_hqdn3d.c
new file mode 100644
index 0000000..78a7bf7
--- /dev/null
+++ b/libavfilter/vf_hqdn3d.c
@@ -0,0 +1,345 @@
+/*
+ * Copyright (c) 2003 Daniel Moreno <comac AT comac DOT darktech DOT org>
+ * Copyright (c) 2010 Baptiste Coudurier
+ *
+ * This file is part of FFmpeg, ported from MPlayer.
+ *
+ * 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
+ * high quality 3d video denoiser, ported from MPlayer
+ * libmpcodecs/vf_hqdn3d.c.
+ */
+
+#include "libavutil/pixdesc.h"
+#include "avfilter.h"
+
+typedef struct {
+ int Coefs[4][512*16];
+ unsigned int *Line;
+ unsigned short *Frame[3];
+ int hsub, vsub;
+} HQDN3DContext;
+
+static inline unsigned int LowPassMul(unsigned int PrevMul, unsigned int CurrMul, int *Coef)
+{
+ // int dMul= (PrevMul&0xFFFFFF)-(CurrMul&0xFFFFFF);
+ int dMul= PrevMul-CurrMul;
+ unsigned int d=((dMul+0x10007FF)>>12);
+ return CurrMul + Coef[d];
+}
+
+static void deNoiseTemporal(unsigned char *FrameSrc,
+ unsigned char *FrameDest,
+ unsigned short *FrameAnt,
+ int W, int H, int sStride, int dStride,
+ int *Temporal)
+{
+ long X, Y;
+ unsigned int PixelDst;
+
+ for (Y = 0; Y < H; Y++) {
+ for (X = 0; X < W; X++) {
+ PixelDst = LowPassMul(FrameAnt[X]<<8, FrameSrc[X]<<16, Temporal);
+ FrameAnt[X] = ((PixelDst+0x1000007F)>>8);
+ FrameDest[X]= ((PixelDst+0x10007FFF)>>16);
+ }
+ FrameSrc += sStride;
+ FrameDest += dStride;
+ FrameAnt += W;
+ }
+}
+
+static void deNoiseSpacial(unsigned char *Frame,
+ unsigned char *FrameDest,
+ unsigned int *LineAnt,
+ int W, int H, int sStride, int dStride,
+ int *Horizontal, int *Vertical)
+{
+ long X, Y;
+ long sLineOffs = 0, dLineOffs = 0;
+ unsigned int PixelAnt;
+ unsigned int PixelDst;
+
+ /* First pixel has no left nor top neighbor. */
+ PixelDst = LineAnt[0] = PixelAnt = Frame[0]<<16;
+ FrameDest[0]= ((PixelDst+0x10007FFF)>>16);
+
+ /* First line has no top neighbor, only left. */
+ for (X = 1; X < W; X++) {
+ PixelDst = LineAnt[X] = LowPassMul(PixelAnt, Frame[X]<<16, Horizontal);
+ FrameDest[X]= ((PixelDst+0x10007FFF)>>16);
+ }
+
+ for (Y = 1; Y < H; Y++) {
+ unsigned int PixelAnt;
+ sLineOffs += sStride, dLineOffs += dStride;
+ /* First pixel on each line doesn't have previous pixel */
+ PixelAnt = Frame[sLineOffs]<<16;
+ PixelDst = LineAnt[0] = LowPassMul(LineAnt[0], PixelAnt, Vertical);
+ FrameDest[dLineOffs]= ((PixelDst+0x10007FFF)>>16);
+
+ for (X = 1; X < W; X++) {
+ unsigned int PixelDst;
+ /* The rest are normal */
+ PixelAnt = LowPassMul(PixelAnt, Frame[sLineOffs+X]<<16, Horizontal);
+ PixelDst = LineAnt[X] = LowPassMul(LineAnt[X], PixelAnt, Vertical);
+ FrameDest[dLineOffs+X]= ((PixelDst+0x10007FFF)>>16);
+ }
+ }
+}
+
+static void deNoise(unsigned char *Frame,
+ unsigned char *FrameDest,
+ unsigned int *LineAnt,
+ unsigned short **FrameAntPtr,
+ int W, int H, int sStride, int dStride,
+ int *Horizontal, int *Vertical, int *Temporal)
+{
+ long X, Y;
+ long sLineOffs = 0, dLineOffs = 0;
+ unsigned int PixelAnt;
+ unsigned int PixelDst;
+ unsigned short* FrameAnt=(*FrameAntPtr);
+
+ if (!FrameAnt) {
+ (*FrameAntPtr) = FrameAnt = av_malloc(W*H*sizeof(unsigned short));
+ for (Y = 0; Y < H; Y++) {
+ unsigned short* dst=&FrameAnt[Y*W];
+ unsigned char* src=Frame+Y*sStride;
+ for (X = 0; X < W; X++) dst[X]=src[X]<<8;
+ }
+ }
+
+ if (!Horizontal[0] && !Vertical[0]) {
+ deNoiseTemporal(Frame, FrameDest, FrameAnt,
+ W, H, sStride, dStride, Temporal);
+ return;
+ }
+ if (!Temporal[0]) {
+ deNoiseSpacial(Frame, FrameDest, LineAnt,
+ W, H, sStride, dStride, Horizontal, Vertical);
+ return;
+ }
+
+ /* First pixel has no left nor top neighbor. Only previous frame */
+ LineAnt[0] = PixelAnt = Frame[0]<<16;
+ PixelDst = LowPassMul(FrameAnt[0]<<8, PixelAnt, Temporal);
+ FrameAnt[0] = ((PixelDst+0x1000007F)>>8);
+ FrameDest[0]= ((PixelDst+0x10007FFF)>>16);
+
+ /* First line has no top neighbor. Only left one for each pixel and
+ * last frame */
+ for (X = 1; X < W; X++) {
+ LineAnt[X] = PixelAnt = LowPassMul(PixelAnt, Frame[X]<<16, Horizontal);
+ PixelDst = LowPassMul(FrameAnt[X]<<8, PixelAnt, Temporal);
+ FrameAnt[X] = ((PixelDst+0x1000007F)>>8);
+ FrameDest[X]= ((PixelDst+0x10007FFF)>>16);
+ }
+
+ for (Y = 1; Y < H; Y++) {
+ unsigned int PixelAnt;
+ unsigned short* LinePrev=&FrameAnt[Y*W];
+ sLineOffs += sStride, dLineOffs += dStride;
+ /* First pixel on each line doesn't have previous pixel */
+ PixelAnt = Frame[sLineOffs]<<16;
+ LineAnt[0] = LowPassMul(LineAnt[0], PixelAnt, Vertical);
+ PixelDst = LowPassMul(LinePrev[0]<<8, LineAnt[0], Temporal);
+ LinePrev[0] = ((PixelDst+0x1000007F)>>8);
+ FrameDest[dLineOffs]= ((PixelDst+0x10007FFF)>>16);
+
+ for (X = 1; X < W; X++) {
+ unsigned int PixelDst;
+ /* The rest are normal */
+ PixelAnt = LowPassMul(PixelAnt, Frame[sLineOffs+X]<<16, Horizontal);
+ LineAnt[X] = LowPassMul(LineAnt[X], PixelAnt, Vertical);
+ PixelDst = LowPassMul(LinePrev[X]<<8, LineAnt[X], Temporal);
+ LinePrev[X] = ((PixelDst+0x1000007F)>>8);
+ FrameDest[dLineOffs+X]= ((PixelDst+0x10007FFF)>>16);
+ }
+ }
+}
+
+static void PrecalcCoefs(int *Ct, double Dist25)
+{
+ int i;
+ double Gamma, Simil, C;
+
+ Gamma = log(0.25) / log(1.0 - Dist25/255.0 - 0.00001);
+
+ for (i = -255*16; i <= 255*16; i++) {
+ Simil = 1.0 - FFABS(i) / (16*255.0);
+ C = pow(Simil, Gamma) * 65536.0 * i / 16.0;
+ Ct[16*256+i] = lrint(C);
+ }
+
+ Ct[0] = !!Dist25;
+}
+
+#define PARAM1_DEFAULT 4.0
+#define PARAM2_DEFAULT 3.0
+#define PARAM3_DEFAULT 6.0
+
+static int init(AVFilterContext *ctx, const char *args, void *opaque)
+{
+ HQDN3DContext *hqdn3d = ctx->priv;
+ double LumSpac, LumTmp, ChromSpac, ChromTmp;
+ double Param1, Param2, Param3, Param4;
+
+ LumSpac = PARAM1_DEFAULT;
+ ChromSpac = PARAM2_DEFAULT;
+ LumTmp = PARAM3_DEFAULT;
+ ChromTmp = LumTmp * ChromSpac / LumSpac;
+
+ if (args) {
+ switch (sscanf(args, "%lf:%lf:%lf:%lf",
+ &Param1, &Param2, &Param3, &Param4)) {
+ case 1:
+ LumSpac = Param1;
+ ChromSpac = PARAM2_DEFAULT * Param1 / PARAM1_DEFAULT;
+ LumTmp = PARAM3_DEFAULT * Param1 / PARAM1_DEFAULT;
+ ChromTmp = LumTmp * ChromSpac / LumSpac;
+ break;
+ case 2:
+ LumSpac = Param1;
+ ChromSpac = Param2;
+ LumTmp = PARAM3_DEFAULT * Param1 / PARAM1_DEFAULT;
+ ChromTmp = LumTmp * ChromSpac / LumSpac;
+ break;
+ case 3:
+ LumSpac = Param1;
+ ChromSpac = Param2;
+ LumTmp = Param3;
+ ChromTmp = LumTmp * ChromSpac / LumSpac;
+ break;
+ case 4:
+ LumSpac = Param1;
+ ChromSpac = Param2;
+ LumTmp = Param3;
+ ChromTmp = Param4;
+ break;
+ }
+ }
+
+ av_log(ctx, AV_LOG_INFO, "ls:%lf cs:%lf lt:%lf ct:%lf\n",
+ LumSpac, ChromSpac, LumTmp, ChromTmp);
+ if (LumSpac < 0 || ChromSpac < 0 || isnan(ChromTmp)) {
+ av_log(ctx, AV_LOG_ERROR,
+ "Invalid negative value for luma or chroma spatial strength, "
+ "or resulting value for chroma temporal strength is nan.\n");
+ return AVERROR(EINVAL);
+ }
+
+ PrecalcCoefs(hqdn3d->Coefs[0], LumSpac);
+ PrecalcCoefs(hqdn3d->Coefs[1], LumTmp);
+ PrecalcCoefs(hqdn3d->Coefs[2], ChromSpac);
+ PrecalcCoefs(hqdn3d->Coefs[3], ChromTmp);
+
+ return 0;
+}
+
+static void uninit(AVFilterContext *ctx)
+{
+ HQDN3DContext *hqdn3d = ctx->priv;
+
+ av_freep(&hqdn3d->Line);
+ av_freep(&hqdn3d->Frame[0]);
+ av_freep(&hqdn3d->Frame[1]);
+ av_freep(&hqdn3d->Frame[2]);
+}
+
+static int query_formats(AVFilterContext *ctx)
+{
+ static const enum PixelFormat pix_fmts[] = {
+ PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV411P, PIX_FMT_NONE
+ };
+
+ avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
+
+ return 0;
+}
+
+static int config_input(AVFilterLink *inlink)
+{
+ HQDN3DContext *hqdn3d = inlink->dst->priv;
+
+ hqdn3d->hsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
+ hqdn3d->vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
+
+ hqdn3d->Line = av_malloc(inlink->w * sizeof(*hqdn3d->Line));
+ if (!hqdn3d->Line)
+ return AVERROR(ENOMEM);
+
+ return 0;
+}
+
+static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { }
+
+static void end_frame(AVFilterLink *inlink)
+{
+ HQDN3DContext *hqdn3d = inlink->dst->priv;
+ AVFilterLink *outlink = inlink->dst->outputs[0];
+ AVFilterBufferRef *inpic = inlink ->cur_buf;
+ AVFilterBufferRef *outpic = outlink->out_buf;
+ int cw = inpic->video->w >> hqdn3d->hsub;
+ int ch = inpic->video->h >> hqdn3d->vsub;
+
+ deNoise(inpic->data[0], outpic->data[0],
+ hqdn3d->Line, &hqdn3d->Frame[0], inpic->video->w, inpic->video->h,
+ inpic->linesize[0], outpic->linesize[0],
+ hqdn3d->Coefs[0],
+ hqdn3d->Coefs[0],
+ hqdn3d->Coefs[1]);
+ deNoise(inpic->data[1], outpic->data[1],
+ hqdn3d->Line, &hqdn3d->Frame[1], cw, ch,
+ inpic->linesize[1], outpic->linesize[1],
+ hqdn3d->Coefs[2],
+ hqdn3d->Coefs[2],
+ hqdn3d->Coefs[3]);
+ deNoise(inpic->data[2], outpic->data[2],
+ hqdn3d->Line, &hqdn3d->Frame[2], cw, ch,
+ inpic->linesize[2], outpic->linesize[2],
+ hqdn3d->Coefs[2],
+ hqdn3d->Coefs[2],
+ hqdn3d->Coefs[3]);
+
+ avfilter_draw_slice(outlink, 0, inpic->video->h, 1);
+ avfilter_end_frame(outlink);
+ avfilter_unref_buffer(inpic);
+ avfilter_unref_buffer(outpic);
+}
+
+AVFilter avfilter_vf_hqdn3d = {
+ .name = "hqdn3d",
+ .description = NULL_IF_CONFIG_SMALL("Apply a High Quality 3D Denoiser."),
+
+ .priv_size = sizeof(HQDN3DContext),
+ .init = init,
+ .uninit = uninit,
+ .query_formats = query_formats,
+
+ .inputs = (AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .draw_slice = null_draw_slice,
+ .config_props = config_input,
+ .end_frame = end_frame },
+ { .name = NULL}},
+
+ .outputs = (AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO },
+ { .name = NULL}},
+};
--
1.7.1
--Kj7319i9nmIyA2yE--
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