| /* |
| * 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_pixel_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 = (const AVFilterPad[]) {{ .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .draw_slice = null_draw_slice, |
| .config_props = config_input, |
| .end_frame = end_frame }, |
| { .name = NULL}}, |
| |
| .outputs = (const AVFilterPad[]) {{ .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO }, |
| { .name = NULL}}, |
| }; |
