| /* |
| * Copyright (c) 2021 Paul B Mahol |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser 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 "libavutil/imgutils.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "avfilter.h" |
| #include "formats.h" |
| #include "framesync.h" |
| #include "internal.h" |
| #include "video.h" |
| |
| typedef struct VarBlurContext { |
| const AVClass *class; |
| FFFrameSync fs; |
| |
| int min_radius; |
| int max_radius; |
| int planes; |
| |
| int depth; |
| int planewidth[4]; |
| int planeheight[4]; |
| |
| AVFrame *sat; |
| int nb_planes; |
| |
| void (*compute_sat)(const uint8_t *ssrc, |
| int linesize, |
| int w, int h, |
| const uint8_t *dstp, |
| int dst_linesize); |
| |
| int (*blur_plane)(AVFilterContext *ctx, |
| uint8_t *ddst, |
| int ddst_linesize, |
| const uint8_t *rrptr, |
| int rrptr_linesize, |
| int w, int h, |
| const uint8_t *pptr, |
| int pptr_linesize, |
| int slice_start, int slice_end); |
| } VarBlurContext; |
| |
| #define OFFSET(x) offsetof(VarBlurContext, x) |
| #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM |
| |
| static const AVOption varblur_options[] = { |
| { "min_r", "set min blur radius", OFFSET(min_radius), AV_OPT_TYPE_INT, {.i64=0}, 0, 254, FLAGS }, |
| { "max_r", "set max blur radius", OFFSET(max_radius), AV_OPT_TYPE_INT, {.i64=8}, 1, 255, FLAGS }, |
| { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS }, |
| { NULL } |
| }; |
| |
| FRAMESYNC_DEFINE_CLASS(varblur, VarBlurContext, fs); |
| |
| static const enum AVPixelFormat pix_fmts[] = { |
| AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, |
| AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, |
| AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P, |
| AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, |
| AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, |
| 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_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12, |
| AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, |
| AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, |
| AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, |
| AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, |
| AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12, |
| AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, |
| 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_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16, |
| AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16, |
| AV_PIX_FMT_NONE |
| }; |
| |
| #define COMPUTE_SAT(type, stype, depth) \ |
| static void compute_sat##depth(const uint8_t *ssrc, \ |
| int linesize, \ |
| int w, int h, \ |
| const uint8_t *dstp, \ |
| int dst_linesize) \ |
| { \ |
| const type *src = (const type *)ssrc; \ |
| stype *dst = (stype *)dstp; \ |
| \ |
| linesize /= (depth / 8); \ |
| dst_linesize /= (depth / 2); \ |
| dst += dst_linesize; \ |
| \ |
| for (int y = 0; y < h; y++) { \ |
| stype sum = 0; \ |
| \ |
| for (int x = 1; x < w; x++) { \ |
| sum += src[x - 1]; \ |
| dst[x] = sum + dst[x - dst_linesize]; \ |
| } \ |
| \ |
| src += linesize; \ |
| dst += dst_linesize; \ |
| } \ |
| } |
| |
| COMPUTE_SAT(uint8_t, uint32_t, 8) |
| COMPUTE_SAT(uint16_t, uint64_t, 16) |
| |
| typedef struct ThreadData { |
| AVFrame *in, *out, *radius; |
| } ThreadData; |
| |
| static float lerpf(float v0, float v1, float f) |
| { |
| return v0 + (v1 - v0) * f; |
| } |
| |
| #define BLUR_PLANE(type, stype, bits) \ |
| static int blur_plane##bits(AVFilterContext *ctx, \ |
| uint8_t *ddst, \ |
| int ddst_linesize, \ |
| const uint8_t *rrptr, \ |
| int rrptr_linesize, \ |
| int w, int h, \ |
| const uint8_t *pptr, \ |
| int pptr_linesize, \ |
| int slice_start, int slice_end) \ |
| { \ |
| VarBlurContext *s = ctx->priv; \ |
| const int ddepth = s->depth; \ |
| const int dst_linesize = ddst_linesize / (bits / 8); \ |
| const int ptr_linesize = pptr_linesize / (bits / 2); \ |
| const int rptr_linesize = rrptr_linesize / (bits / 8); \ |
| const type *rptr = (const type *)rrptr + slice_start * rptr_linesize; \ |
| type *dst = (type *)ddst + slice_start * dst_linesize; \ |
| const stype *ptr = (stype *)pptr; \ |
| const float minr = 2.f * s->min_radius + 1.f; \ |
| const float maxr = 2.f * s->max_radius + 1.f; \ |
| const float scaler = (maxr - minr) / ((1 << ddepth) - 1); \ |
| \ |
| for (int y = slice_start; y < slice_end; y++) { \ |
| for (int x = 0; x < w; x++) { \ |
| const float radiusf = minr + (FFMAX(0.f, 2 * rptr[x] + 1 - minr)) * scaler; \ |
| const int radius = floorf(radiusf); \ |
| const float factor = radiusf - radius; \ |
| const int nradius = radius + 1; \ |
| const int l = FFMIN(radius, x); \ |
| const int r = FFMIN(radius, w - x - 1); \ |
| const int t = FFMIN(radius, y); \ |
| const int b = FFMIN(radius, h - y - 1); \ |
| const int nl = FFMIN(nradius, x); \ |
| const int nr = FFMIN(nradius, w - x - 1); \ |
| const int nt = FFMIN(nradius, y); \ |
| const int nb = FFMIN(nradius, h - y - 1); \ |
| stype tl = ptr[(y - t) * ptr_linesize + x - l]; \ |
| stype tr = ptr[(y - t) * ptr_linesize + x + r]; \ |
| stype bl = ptr[(y + b) * ptr_linesize + x - l]; \ |
| stype br = ptr[(y + b) * ptr_linesize + x + r]; \ |
| stype ntl = ptr[(y - nt) * ptr_linesize + x - nl]; \ |
| stype ntr = ptr[(y - nt) * ptr_linesize + x + nr]; \ |
| stype nbl = ptr[(y + nb) * ptr_linesize + x - nl]; \ |
| stype nbr = ptr[(y + nb) * ptr_linesize + x + nr]; \ |
| stype div = (l + r) * (t + b); \ |
| stype ndiv = (nl + nr) * (nt + nb); \ |
| stype p0 = (br + tl - bl - tr) / div; \ |
| stype n0 = (nbr + ntl - nbl - ntr) / ndiv; \ |
| \ |
| dst[x] = av_clip_uintp2_c(lrintf( \ |
| lerpf(p0, n0, factor)), \ |
| ddepth); \ |
| } \ |
| \ |
| rptr += rptr_linesize; \ |
| dst += dst_linesize; \ |
| } \ |
| \ |
| return 0; \ |
| } |
| |
| BLUR_PLANE(uint8_t, uint32_t, 8) |
| BLUR_PLANE(uint16_t, uint64_t, 16) |
| |
| static int blur_planes(AVFilterContext *ctx, void *arg, |
| int jobnr, int nb_jobs) |
| { |
| VarBlurContext *s = ctx->priv; |
| ThreadData *td = arg; |
| AVFrame *radius = td->radius; |
| AVFrame *out = td->out; |
| AVFrame *in = td->in; |
| |
| for (int plane = 0; plane < s->nb_planes; plane++) { |
| const int height = s->planeheight[plane]; |
| const int slice_start = (height * jobnr) / nb_jobs; |
| const int slice_end = (height * (jobnr+1)) / nb_jobs; |
| const int width = s->planewidth[plane]; |
| const int linesize = in->linesize[plane]; |
| const int dst_linesize = out->linesize[plane]; |
| const uint8_t *rptr = radius->data[plane]; |
| const int rptr_linesize = radius->linesize[plane]; |
| uint8_t *ptr = s->sat->data[plane]; |
| const int ptr_linesize = s->sat->linesize[plane]; |
| const uint8_t *src = in->data[plane]; |
| uint8_t *dst = out->data[plane]; |
| |
| if (!(s->planes & (1 << plane))) { |
| if (out != in) |
| av_image_copy_plane(dst + slice_start * dst_linesize, |
| dst_linesize, |
| src + slice_start * linesize, |
| linesize, |
| width * ((s->depth + 7) / 8), |
| slice_end - slice_start); |
| continue; |
| } |
| |
| s->blur_plane(ctx, dst, dst_linesize, |
| rptr, rptr_linesize, |
| width, height, |
| ptr, ptr_linesize, |
| slice_start, slice_end); |
| } |
| |
| return 0; |
| } |
| |
| static int blur_frame(AVFilterContext *ctx, AVFrame *in, AVFrame *radius) |
| { |
| VarBlurContext *s = ctx->priv; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| ThreadData td; |
| AVFrame *out; |
| |
| if (av_frame_is_writable(in)) { |
| 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); |
| } |
| |
| for (int plane = 0; plane < s->nb_planes; plane++) { |
| const int height = s->planeheight[plane]; |
| const int width = s->planewidth[plane]; |
| const int linesize = in->linesize[plane]; |
| uint8_t *ptr = s->sat->data[plane]; |
| const int ptr_linesize = s->sat->linesize[plane]; |
| const uint8_t *src = in->data[plane]; |
| |
| if (!(s->planes & (1 << plane))) |
| continue; |
| |
| s->compute_sat(src, linesize, width, height, ptr, ptr_linesize); |
| } |
| |
| td.in = in; |
| td.out = out; |
| td.radius = radius; |
| ff_filter_execute(ctx, blur_planes, &td, NULL, |
| FFMIN(s->planeheight[1], ff_filter_get_nb_threads(ctx))); |
| |
| if (out != in) |
| av_frame_free(&in); |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static int activate(AVFilterContext *ctx) |
| { |
| VarBlurContext *s = ctx->priv; |
| return ff_framesync_activate(&s->fs); |
| } |
| |
| static int varblur_frame(FFFrameSync *fs) |
| { |
| AVFilterContext *ctx = fs->parent; |
| VarBlurContext *s = ctx->priv; |
| AVFrame *in, *radius; |
| int ret; |
| |
| if (s->max_radius <= s->min_radius) |
| s->max_radius = s->min_radius + 1; |
| |
| ret = ff_framesync_dualinput_get(fs, &in, &radius); |
| if (ret < 0) |
| return ret; |
| if (!radius) |
| return ff_filter_frame(ctx->outputs[0], in); |
| return blur_frame(ctx, in, radius); |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| AVFilterLink *inlink = ctx->inputs[0]; |
| AVFilterLink *radiuslink = ctx->inputs[1]; |
| VarBlurContext *s = ctx->priv; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format); |
| int ret; |
| |
| if (inlink->w != radiuslink->w || inlink->h != radiuslink->h) { |
| av_log(ctx, AV_LOG_ERROR, "First input link %s parameters " |
| "(size %dx%d) do not match the corresponding " |
| "second input link %s parameters (size %dx%d)\n", |
| ctx->input_pads[0].name, inlink->w, inlink->h, |
| ctx->input_pads[1].name, radiuslink->w, radiuslink->h); |
| return AVERROR(EINVAL); |
| } |
| |
| outlink->w = inlink->w; |
| outlink->h = inlink->h; |
| outlink->time_base = inlink->time_base; |
| outlink->sample_aspect_ratio = inlink->sample_aspect_ratio; |
| outlink->frame_rate = inlink->frame_rate; |
| |
| s->depth = desc->comp[0].depth; |
| s->blur_plane = s->depth <= 8 ? blur_plane8 : blur_plane16; |
| s->compute_sat = s->depth <= 8 ? compute_sat8 : compute_sat16; |
| |
| s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(outlink->w, desc->log2_chroma_w); |
| s->planewidth[0] = s->planewidth[3] = outlink->w; |
| s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(outlink->h, desc->log2_chroma_h); |
| s->planeheight[0] = s->planeheight[3] = outlink->h; |
| |
| s->nb_planes = av_pix_fmt_count_planes(outlink->format); |
| |
| s->sat = ff_get_video_buffer(outlink, (outlink->w + 1) * 4 * ((s->depth + 7) / 8), outlink->h + 1); |
| if (!s->sat) |
| return AVERROR(ENOMEM); |
| |
| s->fs.on_event = varblur_frame; |
| if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0) |
| return ret; |
| |
| ret = ff_framesync_configure(&s->fs); |
| outlink->time_base = s->fs.time_base; |
| |
| return ret; |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| VarBlurContext *s = ctx->priv; |
| |
| ff_framesync_uninit(&s->fs); |
| av_frame_free(&s->sat); |
| } |
| |
| static const AVFilterPad varblur_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { |
| .name = "radius", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| }; |
| |
| static const AVFilterPad varblur_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_output, |
| }, |
| }; |
| |
| const AVFilter ff_vf_varblur = { |
| .name = "varblur", |
| .description = NULL_IF_CONFIG_SMALL("Apply Variable Blur filter."), |
| .priv_size = sizeof(VarBlurContext), |
| .priv_class = &varblur_class, |
| .activate = activate, |
| .preinit = varblur_framesync_preinit, |
| .uninit = uninit, |
| FILTER_INPUTS(varblur_inputs), |
| FILTER_OUTPUTS(varblur_outputs), |
| FILTER_PIXFMTS_ARRAY(pix_fmts), |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | |
| AVFILTER_FLAG_SLICE_THREADS, |
| .process_command = ff_filter_process_command, |
| }; |