| /* |
| * Copyright (c) 2016 Paul B Mahol |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #include "libavutil/avassert.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "avfilter.h" |
| #include "formats.h" |
| #include "internal.h" |
| #include "video.h" |
| |
| typedef struct AverageBlurContext { |
| const AVClass *class; |
| |
| int radius; |
| int radiusV; |
| int planes; |
| |
| int depth; |
| int max; |
| int area; |
| int planewidth[4]; |
| int planeheight[4]; |
| void *buffer; |
| uint16_t lut[256 * 256 * 256]; |
| int nb_planes; |
| |
| int (*filter[2])(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs); |
| } AverageBlurContext; |
| |
| #define OFFSET(x) offsetof(AverageBlurContext, x) |
| #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM |
| |
| static const AVOption avgblur_options[] = { |
| { "sizeX", "set horizontal size", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=1}, 1, 1024, FLAGS }, |
| { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS }, |
| { "sizeY", "set vertical size", OFFSET(radiusV), AV_OPT_TYPE_INT, {.i64=0}, 0, 1024, FLAGS }, |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(avgblur); |
| |
| typedef struct ThreadData { |
| int height; |
| int width; |
| const void *ptr; |
| void *dptr; |
| int linesize, dlinesize; |
| } ThreadData; |
| |
| #define LUT_DIV(sum, area) (lut[(sum)]) |
| #define SLOW_DIV(sum, area) ((sum) / (area)) |
| |
| #define FILTER(name, type, btype, lutunused, areaunused, lutdiv) \ |
| static int filter_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \ |
| { \ |
| AverageBlurContext *s = ctx->priv; \ |
| ThreadData *td = arg; \ |
| areaunused const int area = s->area; \ |
| lutunused const uint16_t *lut = s->lut; \ |
| const int size_w = s->radius; \ |
| const int size_h = s->radiusV; \ |
| btype *col_sum = (btype *)s->buffer + size_w; \ |
| const int dlinesize = td->dlinesize / sizeof(type); \ |
| const int linesize = td->linesize / sizeof(type); \ |
| const int height = td->height; \ |
| const int width = td->width; \ |
| const type *src = td->ptr; \ |
| type *dst = td->dptr; \ |
| btype sum = 0; \ |
| \ |
| for (int x = -size_w; x < 0; x++) { \ |
| sum = src[0] * size_h; \ |
| for (int y = 0; y <= size_h; y++) \ |
| sum += src[y * linesize]; \ |
| av_assert2(sum >= 0); \ |
| col_sum[x] = sum; \ |
| } \ |
| \ |
| for (int x = 0; x < width; x++) { \ |
| sum = src[x] * size_h; \ |
| for (int y = 0; y <= size_h; y++) \ |
| sum += src[x + y * linesize]; \ |
| av_assert2(sum >= 0); \ |
| col_sum[x] = sum; \ |
| } \ |
| \ |
| for (int x = width; x < width + size_w; x++) { \ |
| sum = src[width - 1] * size_h; \ |
| for (int y = 0; y <= size_h; y++) \ |
| sum += src[width - 1 + y * linesize]; \ |
| av_assert2(sum >= 0); \ |
| col_sum[x] = sum; \ |
| } \ |
| \ |
| sum = 0; \ |
| for (int x = -size_w; x <= size_w; x++) \ |
| sum += col_sum[x]; \ |
| av_assert2(sum >= 0); \ |
| dst[0] = lutdiv(sum, area); \ |
| \ |
| for (int x = 1; x < width; x++) { \ |
| sum = sum - col_sum[x - size_w - 1] + col_sum[x + size_w]; \ |
| av_assert2(sum >= 0); \ |
| dst[x] = lutdiv(sum, area); \ |
| } \ |
| \ |
| src = td->ptr; \ |
| src += linesize; \ |
| dst += dlinesize; \ |
| \ |
| for (int y = 1; y < height; y++) { \ |
| const int syp = FFMIN(size_h, height - y - 1) * linesize; \ |
| const int syn = FFMIN(y, size_h + 1) * linesize; \ |
| \ |
| sum = 0; \ |
| \ |
| for (int x = -size_w; x < 0; x++) \ |
| col_sum[x] += src[0 + syp] - src[0 - syn]; \ |
| \ |
| for (int x = 0; x < width; x++) \ |
| col_sum[x] += src[x + syp] - src[x - syn]; \ |
| \ |
| for (int x = width; x < width + size_w; x++) \ |
| col_sum[x] += src[width - 1 + syp] - src[width - 1 - syn]; \ |
| \ |
| for (int x = -size_w; x <= size_w; x++) \ |
| sum += col_sum[x]; \ |
| av_assert2(sum >= 0); \ |
| dst[0] = lutdiv(sum, area); \ |
| \ |
| for (int x = 1; x < width; x++) { \ |
| sum = sum - col_sum[x - size_w - 1] + col_sum[x + size_w]; \ |
| av_assert2(sum >= 0); \ |
| dst[x] = lutdiv(sum, area); \ |
| } \ |
| \ |
| src += linesize; \ |
| dst += dlinesize; \ |
| } \ |
| \ |
| return 0; \ |
| } |
| |
| FILTER(lut8, uint8_t, int32_t, , av_unused, LUT_DIV) |
| FILTER(lut16, uint16_t, int64_t, , av_unused, LUT_DIV) |
| |
| FILTER(slow8, uint8_t, int32_t, av_unused, , SLOW_DIV) |
| FILTER(slow16, uint16_t, int64_t, av_unused, , SLOW_DIV) |
| |
| static void build_lut(AVFilterContext *ctx, int max) |
| { |
| AverageBlurContext *s = ctx->priv; |
| const int area = (2 * s->radiusV + 1) * (2 * s->radius + 1); |
| |
| s->area = area; |
| if (max * area >= FF_ARRAY_ELEMS(s->lut)) |
| return; |
| |
| for (int i = 0, j = 0, k = 0; i < max * area; i++, j++) { |
| if (j == area) { |
| k++; |
| j = 0; |
| } |
| |
| s->lut[i] = k; |
| } |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| AverageBlurContext *s = ctx->priv; |
| |
| av_freep(&s->buffer); |
| } |
| |
| static int config_input(AVFilterLink *inlink) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| AverageBlurContext *s = ctx->priv; |
| |
| uninit(ctx); |
| |
| s->depth = desc->comp[0].depth; |
| s->max = 1 << s->depth; |
| s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w); |
| s->planewidth[0] = s->planewidth[3] = inlink->w; |
| s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); |
| s->planeheight[0] = s->planeheight[3] = inlink->h; |
| |
| s->nb_planes = av_pix_fmt_count_planes(inlink->format); |
| |
| s->buffer = av_calloc(inlink->w + (1024 * 2 + 1), 4 * ((s->depth + 7) / 8)); |
| if (!s->buffer) |
| return AVERROR(ENOMEM); |
| |
| if (s->radiusV <= 0) |
| s->radiusV = s->radius; |
| |
| s->filter[0] = s->depth <= 8 ? filter_lut8 : filter_lut16; |
| s->filter[1] = s->depth <= 8 ? filter_slow8 : filter_slow16; |
| |
| s->radius = FFMIN(s->planewidth[1] / 2, s->radius); |
| s->radiusV = FFMIN(s->planeheight[1] / 2, s->radiusV); |
| |
| build_lut(ctx, s->max); |
| |
| return 0; |
| } |
| |
| static void averageiir2d(AVFilterContext *ctx, AVFrame *in, AVFrame *out, int plane) |
| { |
| AverageBlurContext *s = ctx->priv; |
| const int width = s->planewidth[plane]; |
| const int height = s->planeheight[plane]; |
| const int slow = (s->max * s->area) >= FF_ARRAY_ELEMS(s->lut); |
| ThreadData td; |
| |
| td.width = width; |
| td.height = height; |
| td.ptr = in->data[plane]; |
| td.linesize = in->linesize[plane]; |
| td.dptr = out->data[plane]; |
| td.dlinesize = out->linesize[plane]; |
| s->filter[slow](ctx, &td, 0, 0); |
| } |
| |
| 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 |
| }; |
| |
| static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| AverageBlurContext *s = ctx->priv; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| AVFrame *out; |
| int plane; |
| |
| 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 (plane = 0; plane < s->nb_planes; plane++) { |
| const int height = s->planeheight[plane]; |
| const int width = s->planewidth[plane]; |
| |
| if (!(s->planes & (1 << plane))) { |
| if (out != in) |
| av_image_copy_plane(out->data[plane], out->linesize[plane], |
| in->data[plane], in->linesize[plane], |
| width * ((s->depth + 7) / 8), height); |
| continue; |
| } |
| |
| averageiir2d(ctx, in, out, plane); |
| } |
| |
| av_frame_free(&in); |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, |
| char *res, int res_len, int flags) |
| { |
| AverageBlurContext *s = ctx->priv; |
| const int area = s->area; |
| int ret; |
| |
| ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags); |
| if (ret < 0) |
| return ret; |
| |
| if (s->radiusV <= 0) |
| s->radiusV = s->radius; |
| |
| s->radius = FFMIN(s->planewidth[1] / 2, s->radius); |
| s->radiusV = FFMIN(s->planeheight[1] / 2, s->radiusV); |
| |
| if (area != (2 * s->radiusV + 1) * (2 * s->radius + 1)) |
| build_lut(ctx, s->max); |
| |
| return 0; |
| } |
| |
| static const AVFilterPad avgblur_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_input, |
| .filter_frame = filter_frame, |
| }, |
| }; |
| |
| static const AVFilterPad avgblur_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| }; |
| |
| const AVFilter ff_vf_avgblur = { |
| .name = "avgblur", |
| .description = NULL_IF_CONFIG_SMALL("Apply Average Blur filter."), |
| .priv_size = sizeof(AverageBlurContext), |
| .priv_class = &avgblur_class, |
| .uninit = uninit, |
| FILTER_INPUTS(avgblur_inputs), |
| FILTER_OUTPUTS(avgblur_outputs), |
| FILTER_PIXFMTS_ARRAY(pix_fmts), |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, |
| .process_command = process_command, |
| }; |