| /* |
| * Copyright (c) 2019 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/avstring.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "libavutil/qsort.h" |
| |
| #include "avfilter.h" |
| #include "formats.h" |
| #include "internal.h" |
| #include "framesync.h" |
| #include "video.h" |
| |
| typedef struct XMedianContext { |
| const AVClass *class; |
| const AVPixFmtDescriptor *desc; |
| int nb_inputs; |
| int nb_frames; |
| int planes; |
| float percentile; |
| |
| int tmedian; |
| int radius; |
| int index; |
| int depth; |
| int max; |
| int nb_planes; |
| int linesize[4]; |
| int width[4]; |
| int height[4]; |
| |
| AVFrame **frames; |
| FFFrameSync fs; |
| |
| int (*median_frames)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs); |
| } XMedianContext; |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| static const enum AVPixelFormat pixel_fmts[] = { |
| 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_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_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, |
| AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16, |
| AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16, |
| AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16, |
| AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16, |
| AV_PIX_FMT_NONE |
| }; |
| AVFilterFormats *formats = ff_make_format_list(pixel_fmts); |
| if (!formats) |
| return AVERROR(ENOMEM); |
| return ff_set_common_formats(ctx, formats); |
| } |
| |
| static av_cold int init(AVFilterContext *ctx) |
| { |
| XMedianContext *s = ctx->priv; |
| int ret; |
| |
| s->tmedian = !strcmp(ctx->filter->name, "tmedian"); |
| |
| if (!s->tmedian) { |
| s->radius = s->nb_inputs / 2; |
| } else { |
| s->nb_inputs = s->radius * 2 + 1; |
| } |
| |
| if (s->nb_inputs & 1) |
| s->index = s->radius * 2.f * s->percentile; |
| else |
| s->index = av_clip(s->radius * 2.f * s->percentile, 1, s->nb_inputs - 1); |
| s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames)); |
| if (!s->frames) |
| return AVERROR(ENOMEM); |
| |
| for (int i = 0; i < s->nb_inputs && !s->tmedian; i++) { |
| AVFilterPad pad = { 0 }; |
| |
| pad.type = AVMEDIA_TYPE_VIDEO; |
| pad.name = av_asprintf("input%d", i); |
| if (!pad.name) |
| return AVERROR(ENOMEM); |
| |
| if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) { |
| av_freep(&pad.name); |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| typedef struct ThreadData { |
| AVFrame **in, *out; |
| } ThreadData; |
| |
| static int comparei(const void *p1, const void *p2) |
| { |
| int left = *(const int *)p1; |
| int right = *(const int *)p2; |
| return FFDIFFSIGN(left, right); |
| } |
| |
| static int median_frames16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
| { |
| XMedianContext *s = ctx->priv; |
| ThreadData *td = arg; |
| AVFrame **in = td->in; |
| AVFrame *out = td->out; |
| const int nb_inputs = s->nb_inputs; |
| const int radius = s->radius; |
| const int index = s->index; |
| int values[256]; |
| |
| for (int p = 0; p < s->nb_planes; p++) { |
| const int slice_start = (s->height[p] * jobnr) / nb_jobs; |
| const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs; |
| uint16_t *dst = (uint16_t *)(out->data[p] + slice_start * out->linesize[p]); |
| |
| if (!((1 << p) & s->planes)) { |
| av_image_copy_plane((uint8_t *)dst, out->linesize[p], |
| in[radius]->data[p] + slice_start * in[radius]->linesize[p], |
| in[radius]->linesize[p], |
| s->linesize[p], slice_end - slice_start); |
| continue; |
| } |
| |
| for (int y = slice_start; y < slice_end; y++) { |
| for (int x = 0; x < s->width[p]; x++) { |
| for (int i = 0; i < nb_inputs; i++) { |
| const uint16_t *src = (const uint16_t *)(in[i]->data[p] + y * in[i]->linesize[p]); |
| values[i] = src[x]; |
| } |
| |
| AV_QSORT(values, nb_inputs, int, comparei); |
| if (nb_inputs & 1) |
| dst[x] = values[index]; |
| else |
| dst[x] = (values[index] + values[index - 1]) >> 1; |
| } |
| |
| dst += out->linesize[p] / 2; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int median_frames8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
| { |
| XMedianContext *s = ctx->priv; |
| ThreadData *td = arg; |
| AVFrame **in = td->in; |
| AVFrame *out = td->out; |
| const int nb_inputs = s->nb_inputs; |
| const int radius = s->radius; |
| const int index = s->index; |
| int values[256]; |
| |
| for (int p = 0; p < s->nb_planes; p++) { |
| const int slice_start = (s->height[p] * jobnr) / nb_jobs; |
| const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs; |
| uint8_t *dst = out->data[p] + slice_start * out->linesize[p]; |
| |
| if (!((1 << p) & s->planes)) { |
| av_image_copy_plane(dst, out->linesize[p], |
| in[radius]->data[p] + slice_start * in[radius]->linesize[p], |
| in[radius]->linesize[p], |
| s->linesize[p], slice_end - slice_start); |
| continue; |
| } |
| |
| for (int y = slice_start; y < slice_end; y++) { |
| for (int x = 0; x < s->width[p]; x++) { |
| for (int i = 0; i < nb_inputs; i++) |
| values[i] = in[i]->data[p][y * in[i]->linesize[p] + x]; |
| |
| AV_QSORT(values, nb_inputs, int, comparei); |
| if (nb_inputs & 1) |
| dst[x] = values[index]; |
| else |
| dst[x] = (values[index] + values[index - 1]) >> 1; |
| } |
| |
| dst += out->linesize[p]; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int process_frame(FFFrameSync *fs) |
| { |
| AVFilterContext *ctx = fs->parent; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| XMedianContext *s = fs->opaque; |
| AVFrame **in = s->frames; |
| AVFrame *out; |
| ThreadData td; |
| int i, ret; |
| |
| for (i = 0; i < s->nb_inputs; i++) { |
| if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0) |
| return ret; |
| } |
| |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) |
| return AVERROR(ENOMEM); |
| out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base); |
| |
| td.in = in; |
| td.out = out; |
| ctx->internal->execute(ctx, s->median_frames, &td, NULL, FFMIN(s->height[1], ff_filter_get_nb_threads(ctx))); |
| |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| XMedianContext *s = ctx->priv; |
| AVRational frame_rate = ctx->inputs[0]->frame_rate; |
| AVRational sar = ctx->inputs[0]->sample_aspect_ratio; |
| AVFilterLink *inlink = ctx->inputs[0]; |
| int height = ctx->inputs[0]->h; |
| int width = ctx->inputs[0]->w; |
| FFFrameSyncIn *in; |
| int i, ret; |
| |
| for (int i = 1; i < s->nb_inputs && !s->tmedian; i++) { |
| if (ctx->inputs[i]->h != height || ctx->inputs[i]->w != width) { |
| av_log(ctx, AV_LOG_ERROR, "Input %d size (%dx%d) does not match input %d size (%dx%d).\n", i, ctx->inputs[i]->w, ctx->inputs[i]->h, 0, width, height); |
| return AVERROR(EINVAL); |
| } |
| } |
| |
| s->desc = av_pix_fmt_desc_get(outlink->format); |
| if (!s->desc) |
| return AVERROR_BUG; |
| s->nb_planes = av_pix_fmt_count_planes(outlink->format); |
| s->depth = s->desc->comp[0].depth; |
| s->max = (1 << s->depth) - 1; |
| |
| if (s->depth <= 8) |
| s->median_frames = median_frames8; |
| else |
| s->median_frames = median_frames16; |
| |
| if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0) |
| return ret; |
| |
| s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w); |
| s->width[0] = s->width[3] = inlink->w; |
| s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h); |
| s->height[0] = s->height[3] = inlink->h; |
| |
| if (s->tmedian) |
| return 0; |
| |
| outlink->w = width; |
| outlink->h = height; |
| outlink->frame_rate = frame_rate; |
| outlink->sample_aspect_ratio = sar; |
| |
| if ((ret = ff_framesync_init(&s->fs, ctx, s->nb_inputs)) < 0) |
| return ret; |
| |
| in = s->fs.in; |
| s->fs.opaque = s; |
| s->fs.on_event = process_frame; |
| |
| for (i = 0; i < s->nb_inputs; i++) { |
| AVFilterLink *inlink = ctx->inputs[i]; |
| |
| in[i].time_base = inlink->time_base; |
| in[i].sync = 1; |
| in[i].before = EXT_STOP; |
| in[i].after = EXT_STOP; |
| } |
| |
| ret = ff_framesync_configure(&s->fs); |
| outlink->time_base = s->fs.time_base; |
| |
| return ret; |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| XMedianContext *s = ctx->priv; |
| |
| ff_framesync_uninit(&s->fs); |
| |
| for (int i = 0; i < ctx->nb_inputs && !s->tmedian; i++) |
| av_freep(&ctx->input_pads[i].name); |
| for (int i = 0; i < s->nb_frames && s->frames && s->tmedian; i++) |
| av_frame_free(&s->frames[i]); |
| av_freep(&s->frames); |
| } |
| |
| static int activate(AVFilterContext *ctx) |
| { |
| XMedianContext *s = ctx->priv; |
| return ff_framesync_activate(&s->fs); |
| } |
| |
| #define OFFSET(x) offsetof(XMedianContext, x) |
| #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
| |
| static const AVOption xmedian_options[] = { |
| { "inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=3}, 3, 255, .flags = FLAGS }, |
| { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, .flags = FLAGS }, |
| { "percentile", "set percentile", OFFSET(percentile),AV_OPT_TYPE_FLOAT,{.dbl=0.5}, 0, 1, .flags = FLAGS }, |
| { NULL }, |
| }; |
| |
| static const AVFilterPad outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_output, |
| }, |
| { NULL } |
| }; |
| |
| #if CONFIG_XMEDIAN_FILTER |
| AVFILTER_DEFINE_CLASS(xmedian); |
| |
| AVFilter ff_vf_xmedian = { |
| .name = "xmedian", |
| .description = NULL_IF_CONFIG_SMALL("Pick median pixels from several video inputs."), |
| .priv_size = sizeof(XMedianContext), |
| .priv_class = &xmedian_class, |
| .query_formats = query_formats, |
| .outputs = outputs, |
| .init = init, |
| .uninit = uninit, |
| .activate = activate, |
| .flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_SLICE_THREADS, |
| }; |
| |
| #endif /* CONFIG_XMEDIAN_FILTER */ |
| |
| #if CONFIG_TMEDIAN_FILTER |
| static int tmedian_filter_frame(AVFilterLink *inlink, AVFrame *in) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| XMedianContext *s = ctx->priv; |
| ThreadData td; |
| AVFrame *out; |
| |
| if (s->nb_frames < s->nb_inputs) { |
| s->frames[s->nb_frames] = in; |
| s->nb_frames++; |
| if (s->nb_frames < s->nb_inputs) |
| return 0; |
| } else { |
| av_frame_free(&s->frames[0]); |
| memmove(&s->frames[0], &s->frames[1], sizeof(*s->frames) * (s->nb_inputs - 1)); |
| s->frames[s->nb_inputs - 1] = in; |
| } |
| |
| if (ctx->is_disabled) { |
| out = av_frame_clone(s->frames[0]); |
| if (!out) |
| return AVERROR(ENOMEM); |
| return ff_filter_frame(outlink, out); |
| } |
| |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) |
| return AVERROR(ENOMEM); |
| out->pts = s->frames[0]->pts; |
| |
| td.out = out; |
| td.in = s->frames; |
| ctx->internal->execute(ctx, s->median_frames, &td, NULL, FFMIN(s->height[0], ff_filter_get_nb_threads(ctx))); |
| |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static const AVOption tmedian_options[] = { |
| { "radius", "set median filter radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=1}, 1, 127, .flags = FLAGS }, |
| { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, .flags = FLAGS }, |
| { "percentile", "set percentile", OFFSET(percentile), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, .flags = FLAGS }, |
| { NULL }, |
| }; |
| |
| static const AVFilterPad tmedian_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .filter_frame = tmedian_filter_frame, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad tmedian_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_output, |
| }, |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(tmedian); |
| |
| AVFilter ff_vf_tmedian = { |
| .name = "tmedian", |
| .description = NULL_IF_CONFIG_SMALL("Pick median pixels from successive frames."), |
| .priv_size = sizeof(XMedianContext), |
| .priv_class = &tmedian_class, |
| .query_formats = query_formats, |
| .inputs = tmedian_inputs, |
| .outputs = tmedian_outputs, |
| .init = init, |
| .uninit = uninit, |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS, |
| }; |
| |
| #endif /* CONFIG_TMEDIAN_FILTER */ |