From 0429ff4be674b1a50c6301f1f7a23a4879cb0dcd Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Wed, 24 Aug 2016 22:13:03 +0200 Subject: avfilter: add vaguedenoiser filter --- libavfilter/vf_vaguedenoiser.c | 562 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 562 insertions(+) create mode 100644 libavfilter/vf_vaguedenoiser.c (limited to 'libavfilter/vf_vaguedenoiser.c') diff --git a/libavfilter/vf_vaguedenoiser.c b/libavfilter/vf_vaguedenoiser.c new file mode 100644 index 0000000000..eca1191bbf --- /dev/null +++ b/libavfilter/vf_vaguedenoiser.c @@ -0,0 +1,562 @@ +/* + * Copyright (c) 2003 LeFunGus, lefungus@altern.org + * + * 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 + +#include "libavutil/imgutils.h" +#include "libavutil/attributes.h" +#include "libavutil/common.h" +#include "libavutil/pixdesc.h" +#include "libavutil/intreadwrite.h" +#include "libavutil/opt.h" + +#include "avfilter.h" +#include "formats.h" +#include "internal.h" +#include "video.h" + +typedef struct VagueDenoiserContext { + const AVClass *class; + + float threshold; + float percent; + int method; + int nsteps; + int planes; + + int depth; + int peak; + int nb_planes; + int planeheight[4]; + int planewidth[4]; + + float *block; + float *in; + float *out; + float *tmp; + + int hlowsize[32]; + int hhighsize[32]; + int vlowsize[32]; + int vhighsize[32]; +} VagueDenoiserContext; + +#define OFFSET(x) offsetof(VagueDenoiserContext, x) +#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM +static const AVOption vaguedenoiser_options[] = { + { "threshold", "set filtering strength", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=2.}, 0,DBL_MAX, FLAGS }, + { "method", "set filtering method", OFFSET(method), AV_OPT_TYPE_INT, {.i64=2 }, 0, 2, FLAGS, "method" }, + { "hard", "hard thresholding", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "method" }, + { "soft", "soft thresholding", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "method" }, + { "garrote", "garotte thresholding", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "method" }, + { "nsteps", "set number of steps", OFFSET(nsteps), AV_OPT_TYPE_INT, {.i64=6 }, 1, 32, FLAGS }, + { "percent", "set percent of full denoising", OFFSET(percent),AV_OPT_TYPE_FLOAT, {.dbl=85}, 0,100, FLAGS }, + { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15 }, 0, 15, FLAGS }, + { NULL } +}; + +AVFILTER_DEFINE_CLASS(vaguedenoiser); + +#define NPAD 10 + +static const float analysis_low[9] = { + 0.037828455506995f, -0.023849465019380f, -0.110624404418423f, 0.377402855612654f, + 0.852698679009403f, 0.377402855612654f, -0.110624404418423f, -0.023849465019380f, 0.037828455506995f +}; + +static const float analysis_high[7] = { + -0.064538882628938f, 0.040689417609558f, 0.418092273222212f, -0.788485616405664f, + 0.418092273222212f, 0.040689417609558f, -0.064538882628938f +}; + +static const float synthesis_low[7] = { + -0.064538882628938f, -0.040689417609558f, 0.418092273222212f, 0.788485616405664f, + 0.418092273222212f, -0.040689417609558f, -0.064538882628938f +}; + +static const float synthesis_high[9] = { + -0.037828455506995f, -0.023849465019380f, 0.110624404418423f, 0.377402855612654f, + -0.852698679009403f, 0.377402855612654f, 0.110624404418423f, -0.023849465019380f, -0.037828455506995f +}; + +static int query_formats(AVFilterContext *ctx) +{ + static const enum AVPixelFormat pix_fmts[] = { + AV_PIX_FMT_GRAY8, + AV_PIX_FMT_GRAY16, + AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, + AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, + AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, + AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, + AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P, + AV_PIX_FMT_YUVJ411P, + AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, + AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, + AV_PIX_FMT_YUV440P10, + AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12, + AV_PIX_FMT_YUV440P12, + AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14, + AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, + AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, + AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16, + AV_PIX_FMT_NONE + }; + AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); + if (!fmts_list) + return AVERROR(ENOMEM); + return ff_set_common_formats(ctx, fmts_list); +} + +static int config_input(AVFilterLink *inlink) +{ + VagueDenoiserContext *s = inlink->dst->priv; + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); + int nsteps_width, nsteps_height, nsteps_max; + + s->depth = desc->comp[0].depth; + s->nb_planes = desc->nb_components; + + s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); + s->planeheight[0] = s->planeheight[3] = inlink->h; + s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w); + s->planewidth[0] = s->planewidth[3] = inlink->w; + + s->block = av_malloc_array(inlink->w * inlink->h, sizeof(*s->block)); + s->in = av_malloc_array(32 + FFMAX(inlink->w, inlink->h), sizeof(*s->in)); + s->out = av_malloc_array(32 + FFMAX(inlink->w, inlink->h), sizeof(*s->out)); + s->tmp = av_malloc_array(32 + FFMAX(inlink->w, inlink->h), sizeof(*s->tmp)); + + if (!s->block || !s->in || !s->out || !s->tmp) + return AVERROR(ENOMEM); + + s->threshold *= 1 << (s->depth - 8); + s->peak = (1 << s->depth) - 1; + + nsteps_width = ((s->planes & 2 || s->planes & 4) && s->nb_planes > 1) ? s->planewidth[1] : s->planewidth[0]; + nsteps_height = ((s->planes & 2 || s->planes & 4) && s->nb_planes > 1) ? s->planeheight[1] : s->planeheight[0]; + + for (nsteps_max = 1; nsteps_max < 15; nsteps_max++) { + if (pow(2, nsteps_max) >= nsteps_width || pow(2, nsteps_max) >= nsteps_height) + break; + } + + s->nsteps = FFMIN(s->nsteps, nsteps_max - 2); + + return 0; +} + +static inline void copy(const float *p1, float *p2, const int length) +{ + memcpy(p2, p1, length * sizeof(float)); +} + +static inline void copyv(const float *p1, const int stride1, float *p2, const int length) +{ + int i; + + for (i = 0; i < length; i++) { + p2[i] = *p1; + p1 += stride1; + } +} + +static inline void copyh(const float *p1, float *p2, const int stride2, const int length) +{ + int i; + + for (i = 0; i < length; i++) { + *p2 = p1[i]; + p2 += stride2; + } +} + +// Do symmetric extension of data using prescribed symmetries +// Original values are in output[npad] through output[npad+size-1] +// New values will be placed in output[0] through output[npad] and in output[npad+size] through output[2*npad+size-1] (note: end values may not be filled in) +// extension at left bdry is ... 3 2 1 0 | 0 1 2 3 ... +// same for right boundary +// if right_ext=1 then ... 3 2 1 0 | 1 2 3 +static void symmetric_extension(float *output, const int size, const int left_ext, const int right_ext) +{ + int first = NPAD; + int last = NPAD - 1 + size; + const int originalLast = last; + int i, nextend, idx; + + if (left_ext == 2) + output[--first] = output[NPAD]; + if (right_ext == 2) + output[++last] = output[originalLast]; + + // extend left end + nextend = first; + for (i = 0; i < nextend; i++) + output[--first] = output[NPAD + 1 + i]; + + idx = NPAD + NPAD - 1 + size; + + // extend right end + nextend = idx - last; + for (i = 0; i < nextend; i++) + output[++last] = output[originalLast - 1 - i]; +} + +static void transform_step(float *input, float *output, const int size, const int low_size, VagueDenoiserContext *s) +{ + int i; + + symmetric_extension(input, size, 1, 1); + + for (i = NPAD; i < NPAD + low_size; i++) { + const float a = input[2 * i - 14] * analysis_low[0]; + const float b = input[2 * i - 13] * analysis_low[1]; + const float c = input[2 * i - 12] * analysis_low[2]; + const float d = input[2 * i - 11] * analysis_low[3]; + const float e = input[2 * i - 10] * analysis_low[4]; + const float f = input[2 * i - 9] * analysis_low[3]; + const float g = input[2 * i - 8] * analysis_low[2]; + const float h = input[2 * i - 7] * analysis_low[1]; + const float k = input[2 * i - 6] * analysis_low[0]; + + output[i] = a + b + c + d + e + f + g + h + k; + } + + for (i = NPAD; i < NPAD + low_size; i++) { + const float a = input[2 * i - 12] * analysis_high[0]; + const float b = input[2 * i - 11] * analysis_high[1]; + const float c = input[2 * i - 10] * analysis_high[2]; + const float d = input[2 * i - 9] * analysis_high[3]; + const float e = input[2 * i - 8] * analysis_high[2]; + const float f = input[2 * i - 7] * analysis_high[1]; + const float g = input[2 * i - 6] * analysis_high[0]; + + output[i + low_size] = a + b + c + d + e + f + g; + } +} + +static void invert_step(const float *input, float *output, float *temp, const int size, VagueDenoiserContext *s) +{ + const int low_size = (size + 1) >> 1; + const int high_size = size >> 1; + int left_ext = 1, right_ext, i; + int findex; + + memcpy(temp + NPAD, input + NPAD, low_size * sizeof(float)); + + right_ext = (size % 2 == 0) ? 2 : 1; + symmetric_extension(temp, low_size, left_ext, right_ext); + + memset(output, 0, (NPAD + NPAD + size) * sizeof(float)); + findex = (size + 2) >> 1; + + for (i = 9; i < findex + 11; i++) { + const float a = temp[i] * synthesis_low[0]; + const float b = temp[i] * synthesis_low[1]; + const float c = temp[i] * synthesis_low[2]; + const float d = temp[i] * synthesis_low[3]; + + output[2 * i - 13] += a; + output[2 * i - 12] += b; + output[2 * i - 11] += c; + output[2 * i - 10] += d; + output[2 * i - 9] += c; + output[2 * i - 8] += b; + output[2 * i - 7] += a; + } + + memcpy(temp + NPAD, input + NPAD + low_size, high_size * sizeof(float)); + + left_ext = 2; + right_ext = (size % 2 == 0) ? 1 : 2; + symmetric_extension(temp, high_size, left_ext, right_ext); + + for (i = 8; i < findex + 11; i++) { + const float a = temp[i] * synthesis_high[0]; + const float b = temp[i] * synthesis_high[1]; + const float c = temp[i] * synthesis_high[2]; + const float d = temp[i] * synthesis_high[3]; + const float e = temp[i] * synthesis_high[4]; + + output[2 * i - 13] += a; + output[2 * i - 12] += b; + output[2 * i - 11] += c; + output[2 * i - 10] += d; + output[2 * i - 9] += e; + output[2 * i - 8] += d; + output[2 * i - 7] += c; + output[2 * i - 6] += b; + output[2 * i - 5] += a; + } +} + +static void hard_thresholding(float *block, const int width, const int height, + const int stride, const float threshold, + const float percent) +{ + const float frac = 1.f - percent * 0.01f; + int y, x; + + for (y = 0; y < height; y++) { + for (x = 0; x < width; x++) { + if (FFABS(block[x]) <= threshold) + block[x] *= frac; + } + block += stride; + } +} + +static void soft_thresholding(float *block, const int width, const int height, const int stride, + const float threshold, const float percent, const int nsteps) +{ + const float frac = 1.f - percent * 0.01f; + const float shift = threshold * 0.01f * percent; + int w = width; + int h = height; + int y, x, l; + + for (l = 0; l < nsteps; l++) { + w = (w + 1) >> 1; + h = (h + 1) >> 1; + } + + for (y = 0; y < height; y++) { + const int x0 = (y < h) ? w : 0; + for (x = x0; x < width; x++) { + const float temp = FFABS(block[x]); + if (temp <= threshold) + block[x] *= frac; + else + block[x] = (block[x] < 0.f ? -1.f : (block[x] > 0.f ? 1.f : 0.f)) * (temp - shift); + } + block += stride; + } +} + +static void qian_thresholding(float *block, const int width, const int height, + const int stride, const float threshold, + const float percent) +{ + const float percent01 = percent * 0.01f; + const float tr2 = threshold * threshold * percent01; + const float frac = 1.f - percent01; + int y, x; + + for (y = 0; y < height; y++) { + for (x = 0; x < width; x++) { + const float temp = FFABS(block[x]); + if (temp <= threshold) { + block[x] *= frac; + } else { + const float tp2 = temp * temp; + block[x] *= (tp2 - tr2) / tp2; + } + } + block += stride; + } +} + +static void filter(VagueDenoiserContext *s, AVFrame *in, AVFrame *out) +{ + int p, y, x, i, j; + + for (p = 0; p < s->nb_planes; p++) { + const int height = s->planeheight[p]; + const int width = s->planewidth[p]; + const uint8_t *srcp8 = in->data[p]; + const uint16_t *srcp16 = (const uint16_t *)in->data[p]; + uint8_t *dstp8 = out->data[p]; + uint16_t *dstp16 = (uint16_t *)out->data[p]; + float *output = s->block; + int h_low_size0 = width; + int v_low_size0 = height; + int nsteps_transform = s->nsteps; + int nsteps_invert = s->nsteps; + const float *input = s->block; + + if (!((1 << p) & s->planes)) { + av_image_copy_plane(out->data[p], out->linesize[p], in->data[p], in->linesize[p], + s->planewidth[p], s->planeheight[p]); + continue; + } + + if (s->depth <= 8) { + for (y = 0; y < height; y++) { + for (x = 0; x < width; x++) + output[x] = srcp8[x]; + srcp8 += in->linesize[p]; + output += width; + } + } else { + for (y = 0; y < height; y++) { + for (x = 0; x < width; x++) + output[x] = srcp16[x]; + srcp16 += in->linesize[p] / 2; + output += width; + } + } + + while (nsteps_transform--) { + int low_size = (h_low_size0 + 1) >> 1; + float *input = s->block; + for (j = 0; j < v_low_size0; j++) { + copy(input, s->in + NPAD, h_low_size0); + transform_step(s->in, s->out, h_low_size0, low_size, s); + copy(s->out + NPAD, input, h_low_size0); + input += width; + } + + low_size = (v_low_size0 + 1) >> 1; + input = s->block; + for (j = 0; j < h_low_size0; j++) { + copyv(input, width, s->in + NPAD, v_low_size0); + transform_step(s->in, s->out, v_low_size0, low_size, s); + copyh(s->out + NPAD, input, width, v_low_size0); + input++; + } + + h_low_size0 = (h_low_size0 + 1) >> 1; + v_low_size0 = (v_low_size0 + 1) >> 1; + } + + if (s->method == 0) + hard_thresholding(s->block, width, height, width, s->threshold, s->percent); + else if (s->method == 1) + soft_thresholding(s->block, width, height, width, s->threshold, s->percent, s->nsteps); + else + qian_thresholding(s->block, width, height, width, s->threshold, s->percent); + + s->hlowsize[0] = (width + 1) >> 1; + s->hhighsize[0] = width >> 1; + s->vlowsize[0] = (height + 1) >> 1; + s->vhighsize[0] = height >> 1; + + for (i = 1; i < s->nsteps; i++) { + s->hlowsize[i] = (s->hlowsize[i - 1] + 1) >> 1; + s->hhighsize[i] = s->hlowsize[i - 1] >> 1; + s->vlowsize[i] = (s->vlowsize[i - 1] + 1) >> 1; + s->vhighsize[i] = s->vlowsize[i - 1] >> 1; + } + + while (nsteps_invert--) { + const int idx = s->vlowsize[nsteps_invert] + s->vhighsize[nsteps_invert]; + const int idx2 = s->hlowsize[nsteps_invert] + s->hhighsize[nsteps_invert]; + float * idx3 = s->block; + for (i = 0; i < idx2; i++) { + copyv(idx3, width, s->in + NPAD, idx); + invert_step(s->in, s->out, s->tmp, idx, s); + copyh(s->out + NPAD, idx3, width, idx); + idx3++; + } + + idx3 = s->block; + for (i = 0; i < idx; i++) { + copy(idx3, s->in + NPAD, idx2); + invert_step(s->in, s->out, s->tmp, idx2, s); + copy(s->out + NPAD, idx3, idx2); + idx3 += width; + } + } + + if (s->depth <= 8) { + for (y = 0; y < height; y++) { + for (x = 0; x < width; x++) + dstp8[x] = av_clip_uint8(input[x] + 0.5f); + input += width; + dstp8 += out->linesize[p]; + } + } else { + for (y = 0; y < height; y++) { + for (x = 0; x < width; x++) + dstp16[x] = av_clip(input[x] + 0.5f, 0, s->peak); + input += width; + dstp16 += out->linesize[p] / 2; + } + } + } +} + +static int filter_frame(AVFilterLink *inlink, AVFrame *in) +{ + AVFilterContext *ctx = inlink->dst; + VagueDenoiserContext *s = ctx->priv; + AVFilterLink *outlink = ctx->outputs[0]; + AVFrame *out; + int direct = av_frame_is_writable(in); + + if (direct) { + out = in; + } else { + out = ff_get_video_buffer(outlink, outlink->w, outlink->h); + if (!out) { + av_frame_free(&in); + return AVERROR(ENOMEM); + } + + av_frame_copy_props(out, in); + } + + filter(s, in, out); + + if (!direct) + av_frame_free(&in); + + return ff_filter_frame(outlink, out); +} + +static av_cold void uninit(AVFilterContext *ctx) +{ + VagueDenoiserContext *s = ctx->priv; + + av_freep(&s->block); + av_freep(&s->in); + av_freep(&s->out); + av_freep(&s->tmp); +} + +static const AVFilterPad vaguedenoiser_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_input, + .filter_frame = filter_frame, + }, + { NULL } +}; + + +static const AVFilterPad vaguedenoiser_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO + }, + { NULL } +}; + +AVFilter ff_vf_vaguedenoiser = { + .name = "vaguedenoiser", + .description = NULL_IF_CONFIG_SMALL("Apply a Wavelet based Denoiser."), + .priv_size = sizeof(VagueDenoiserContext), + .priv_class = &vaguedenoiser_class, + .uninit = uninit, + .query_formats = query_formats, + .inputs = vaguedenoiser_inputs, + .outputs = vaguedenoiser_outputs, + .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, +}; -- cgit v1.2.3