From a4dc7aa5b5f2b8d1a2993b9887c0428e6b01677f Mon Sep 17 00:00:00 2001 From: Baptiste Coudurier Date: Sat, 4 Dec 2010 13:03:42 +0000 Subject: Port libmpcodecs hqdn3d filter. Patch by Baptiste with some fixes by me. Originally committed as revision 25880 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavfilter/vf_hqdn3d.c | 345 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 345 insertions(+) create mode 100644 libavfilter/vf_hqdn3d.c (limited to 'libavfilter/vf_hqdn3d.c') diff --git a/libavfilter/vf_hqdn3d.c b/libavfilter/vf_hqdn3d.c new file mode 100644 index 0000000000..78a7bf71c7 --- /dev/null +++ b/libavfilter/vf_hqdn3d.c @@ -0,0 +1,345 @@ +/* + * Copyright (c) 2003 Daniel Moreno + * 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}}, +}; 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