| /* |
| * 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/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 planewidth[4]; |
| int planeheight[4]; |
| float *buffer; |
| int nb_planes; |
| |
| int (*filter_horizontally)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs); |
| int (*filter_vertically)(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; |
| uint8_t *ptr; |
| int linesize; |
| } ThreadData; |
| |
| #define HORIZONTAL_FILTER(name, type) \ |
| static int filter_horizontally_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)\ |
| { \ |
| AverageBlurContext *s = ctx->priv; \ |
| ThreadData *td = arg; \ |
| const int height = td->height; \ |
| const int width = td->width; \ |
| const int slice_start = (height * jobnr ) / nb_jobs; \ |
| const int slice_end = (height * (jobnr+1)) / nb_jobs; \ |
| const int radius = FFMIN(s->radius, width / 2); \ |
| const int linesize = td->linesize / sizeof(type); \ |
| float *buffer = s->buffer; \ |
| const type *src; \ |
| float *ptr; \ |
| int y, x; \ |
| \ |
| /* Filter horizontally along each row */ \ |
| for (y = slice_start; y < slice_end; y++) { \ |
| float acc = 0; \ |
| int count = 0; \ |
| \ |
| src = (const type *)td->ptr + linesize * y; \ |
| ptr = buffer + width * y; \ |
| \ |
| for (x = 0; x < radius; x++) { \ |
| acc += src[x]; \ |
| } \ |
| count += radius; \ |
| \ |
| for (x = 0; x <= radius; x++) { \ |
| acc += src[x + radius]; \ |
| count++; \ |
| ptr[x] = acc / count; \ |
| } \ |
| \ |
| for (; x < width - radius; x++) { \ |
| acc += src[x + radius] - src[x - radius - 1]; \ |
| ptr[x] = acc / count; \ |
| } \ |
| \ |
| for (; x < width; x++) { \ |
| acc -= src[x - radius]; \ |
| count--; \ |
| ptr[x] = acc / count; \ |
| } \ |
| } \ |
| \ |
| return 0; \ |
| } |
| |
| HORIZONTAL_FILTER(8, uint8_t) |
| HORIZONTAL_FILTER(16, uint16_t) |
| |
| #define VERTICAL_FILTER(name, type) \ |
| static int filter_vertically_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \ |
| { \ |
| AverageBlurContext *s = ctx->priv; \ |
| ThreadData *td = arg; \ |
| const int height = td->height; \ |
| const int width = td->width; \ |
| const int slice_start = (width * jobnr ) / nb_jobs; \ |
| const int slice_end = (width * (jobnr+1)) / nb_jobs; \ |
| const int radius = FFMIN(s->radiusV, height / 2); \ |
| const int linesize = td->linesize / sizeof(type); \ |
| type *buffer = (type *)td->ptr; \ |
| const float *src; \ |
| type *ptr; \ |
| int i, x; \ |
| \ |
| /* Filter vertically along each column */ \ |
| for (x = slice_start; x < slice_end; x++) { \ |
| float acc = 0; \ |
| int count = 0; \ |
| \ |
| src = s->buffer + x; \ |
| \ |
| for (i = 0; i < radius; i++) { \ |
| acc += src[0]; \ |
| src += width; \ |
| } \ |
| count += radius; \ |
| \ |
| src = s->buffer + x; \ |
| ptr = buffer + x; \ |
| for (i = 0; i + radius < height && i <= radius; i++) { \ |
| acc += src[(i + radius) * width]; \ |
| count++; \ |
| ptr[i * linesize] = acc / count; \ |
| } \ |
| \ |
| for (; i < height - radius; i++) { \ |
| acc += src[(i + radius) * width] - src[(i - radius - 1) * width]; \ |
| ptr[i * linesize] = acc / count; \ |
| } \ |
| \ |
| for (; i < height; i++) { \ |
| acc -= src[(i - radius) * width]; \ |
| count--; \ |
| ptr[i * linesize] = acc / count; \ |
| } \ |
| } \ |
| \ |
| return 0; \ |
| } |
| |
| VERTICAL_FILTER(8, uint8_t) |
| VERTICAL_FILTER(16, uint16_t) |
| |
| static int config_input(AVFilterLink *inlink) |
| { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| AverageBlurContext *s = inlink->dst->priv; |
| |
| s->depth = desc->comp[0].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_malloc_array(inlink->w, inlink->h * sizeof(*s->buffer)); |
| if (!s->buffer) |
| return AVERROR(ENOMEM); |
| |
| if (s->radiusV <= 0) { |
| s->radiusV = s->radius; |
| } |
| |
| if (s->depth == 8) { |
| s->filter_horizontally = filter_horizontally_8; |
| s->filter_vertically = filter_vertically_8; |
| } else { |
| s->filter_horizontally = filter_horizontally_16; |
| s->filter_vertically = filter_vertically_16; |
| } |
| |
| 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 nb_threads = ff_filter_get_nb_threads(ctx); |
| ThreadData td; |
| |
| td.width = width; |
| td.height = height; |
| td.ptr = in->data[plane]; |
| td.linesize = in->linesize[plane]; |
| ctx->internal->execute(ctx, s->filter_horizontally, &td, NULL, FFMIN(height, nb_threads)); |
| td.ptr = out->data[plane]; |
| td.linesize = out->linesize[plane]; |
| ctx->internal->execute(ctx, s->filter_vertically, &td, NULL, FFMIN(width, nb_threads)); |
| } |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| 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 |
| }; |
| |
| return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); |
| } |
| |
| 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; |
| |
| 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 (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); |
| } |
| |
| if (out != in) |
| av_frame_free(&in); |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| AverageBlurContext *s = ctx->priv; |
| |
| av_freep(&s->buffer); |
| } |
| |
| static const AVFilterPad avgblur_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_input, |
| .filter_frame = filter_frame, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad avgblur_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { NULL } |
| }; |
| |
| 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, |
| .query_formats = query_formats, |
| .inputs = avgblur_inputs, |
| .outputs = avgblur_outputs, |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS, |
| .process_command = ff_filter_process_command, |
| }; |
