| /* |
| * Copyright (c) 2016 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 |
| */ |
| |
| /** |
| * @file |
| * threshold video filter |
| */ |
| |
| #include "libavutil/imgutils.h" |
| #include "libavutil/internal.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "avfilter.h" |
| #include "framesync.h" |
| #include "internal.h" |
| #include "video.h" |
| #include "threshold.h" |
| |
| #define OFFSET(x) offsetof(ThresholdContext, x) |
| #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
| |
| static const AVOption threshold_options[] = { |
| { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS}, |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(threshold); |
| |
| 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_YUV440P10, AV_PIX_FMT_YUV444P10, |
| AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV440P12, AV_PIX_FMT_YUV444P12, |
| 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)); |
| } |
| |
| typedef struct ThreadData { |
| AVFrame *in; |
| AVFrame *threshold; |
| AVFrame *min; |
| AVFrame *max; |
| AVFrame *out; |
| } ThreadData; |
| |
| static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
| { |
| ThresholdContext *s = ctx->priv; |
| ThreadData *td = arg; |
| AVFrame *min = td->min; |
| AVFrame *max = td->max; |
| AVFrame *threshold = td->threshold; |
| AVFrame *in = td->in; |
| AVFrame *out = td->out; |
| |
| for (int p = 0; p < s->nb_planes; p++) { |
| const int h = s->height[p]; |
| const int slice_start = (h * jobnr) / nb_jobs; |
| const int slice_end = (h * (jobnr+1)) / nb_jobs; |
| |
| if (!(s->planes & (1 << p))) { |
| av_image_copy_plane(out->data[p] + slice_start * out->linesize[p], |
| out->linesize[p], |
| in->data[p] + slice_start * in->linesize[p], |
| in->linesize[p], |
| s->width[p] * s->bpc, |
| slice_end - slice_start); |
| continue; |
| } |
| s->threshold(in->data[p] + slice_start * in->linesize[p], |
| threshold->data[p] + slice_start * threshold->linesize[p], |
| min->data[p] + slice_start * min->linesize[p], |
| max->data[p] + slice_start * max->linesize[p], |
| out->data[p] + slice_start * out->linesize[p], |
| in->linesize[p], threshold->linesize[p], |
| min->linesize[p], max->linesize[p], |
| out->linesize[p], |
| s->width[p], slice_end - slice_start); |
| } |
| |
| return 0; |
| } |
| |
| static int process_frame(FFFrameSync *fs) |
| { |
| AVFilterContext *ctx = fs->parent; |
| ThresholdContext *s = fs->opaque; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| AVFrame *out, *in, *threshold, *min, *max; |
| ThreadData td; |
| int ret; |
| |
| if ((ret = ff_framesync_get_frame(&s->fs, 0, &in, 0)) < 0 || |
| (ret = ff_framesync_get_frame(&s->fs, 1, &threshold, 0)) < 0 || |
| (ret = ff_framesync_get_frame(&s->fs, 2, &min, 0)) < 0 || |
| (ret = ff_framesync_get_frame(&s->fs, 3, &max, 0)) < 0) |
| return ret; |
| |
| if (ctx->is_disabled) { |
| out = av_frame_clone(in); |
| if (!out) |
| return AVERROR(ENOMEM); |
| } else { |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) |
| return AVERROR(ENOMEM); |
| av_frame_copy_props(out, in); |
| |
| td.out = out; |
| td.in = in; |
| td.threshold = threshold; |
| td.min = min; |
| td.max = max; |
| ctx->internal->execute(ctx, filter_slice, &td, NULL, |
| FFMIN(s->height[2], ff_filter_get_nb_threads(ctx))); |
| } |
| |
| out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base); |
| |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static void threshold8(const uint8_t *in, const uint8_t *threshold, |
| const uint8_t *min, const uint8_t *max, |
| uint8_t *out, |
| ptrdiff_t ilinesize, ptrdiff_t tlinesize, |
| ptrdiff_t flinesize, ptrdiff_t slinesize, |
| ptrdiff_t olinesize, |
| int w, int h) |
| { |
| int x, y; |
| |
| for (y = 0; y < h; y++) { |
| for (x = 0; x < w; x++) { |
| out[x] = in[x] < threshold[x] ? min[x] : max[x]; |
| } |
| |
| in += ilinesize; |
| threshold += tlinesize; |
| min += flinesize; |
| max += slinesize; |
| out += olinesize; |
| } |
| } |
| |
| static void threshold16(const uint8_t *iin, const uint8_t *tthreshold, |
| const uint8_t *ffirst, const uint8_t *ssecond, |
| uint8_t *oout, |
| ptrdiff_t ilinesize, ptrdiff_t tlinesize, |
| ptrdiff_t flinesize, ptrdiff_t slinesize, |
| ptrdiff_t olinesize, |
| int w, int h) |
| { |
| const uint16_t *in = (const uint16_t *)iin; |
| const uint16_t *threshold = (const uint16_t *)tthreshold; |
| const uint16_t *min = (const uint16_t *)ffirst; |
| const uint16_t *max = (const uint16_t *)ssecond; |
| uint16_t *out = (uint16_t *)oout; |
| int x, y; |
| |
| for (y = 0; y < h; y++) { |
| for (x = 0; x < w; x++) { |
| out[x] = in[x] < threshold[x] ? min[x] : max[x]; |
| } |
| |
| in += ilinesize / 2; |
| threshold += tlinesize / 2; |
| min += flinesize / 2; |
| max += slinesize / 2; |
| out += olinesize / 2; |
| } |
| } |
| |
| static int config_input(AVFilterLink *inlink) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| ThresholdContext *s = ctx->priv; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| int vsub, hsub; |
| |
| s->nb_planes = av_pix_fmt_count_planes(inlink->format); |
| |
| hsub = desc->log2_chroma_w; |
| vsub = desc->log2_chroma_h; |
| s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub); |
| s->height[0] = s->height[3] = inlink->h; |
| s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub); |
| s->width[0] = s->width[3] = inlink->w; |
| s->depth = desc->comp[0].depth; |
| |
| ff_threshold_init(s); |
| |
| return 0; |
| } |
| |
| void ff_threshold_init(ThresholdContext *s) |
| { |
| if (s->depth == 8) { |
| s->threshold = threshold8; |
| s->bpc = 1; |
| } else { |
| s->threshold = threshold16; |
| s->bpc = 2; |
| } |
| |
| if (ARCH_X86) |
| ff_threshold_init_x86(s); |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| ThresholdContext *s = ctx->priv; |
| AVFilterLink *base = ctx->inputs[0]; |
| AVFilterLink *threshold = ctx->inputs[1]; |
| AVFilterLink *min = ctx->inputs[2]; |
| AVFilterLink *max = ctx->inputs[3]; |
| FFFrameSyncIn *in; |
| int ret; |
| |
| if (base->format != threshold->format || |
| base->format != min->format || |
| base->format != max->format) { |
| av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n"); |
| return AVERROR(EINVAL); |
| } |
| if (base->w != threshold->w || |
| base->h != threshold->h || |
| base->w != min->w || |
| base->h != min->h || |
| base->w != max->w || |
| base->h != max->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 (%dx%d) " |
| "and/or third input link %s parameters (%dx%d) " |
| "and/or fourth input link %s parameters (%dx%d)\n", |
| ctx->input_pads[0].name, base->w, base->h, |
| ctx->input_pads[1].name, threshold->w, threshold->h, |
| ctx->input_pads[2].name, min->w, min->h, |
| ctx->input_pads[3].name, max->w, max->h); |
| return AVERROR(EINVAL); |
| } |
| |
| outlink->w = base->w; |
| outlink->h = base->h; |
| outlink->sample_aspect_ratio = base->sample_aspect_ratio; |
| outlink->frame_rate = base->frame_rate; |
| |
| if ((ret = ff_framesync_init(&s->fs, ctx, 4)) < 0) |
| return ret; |
| |
| in = s->fs.in; |
| in[0].time_base = base->time_base; |
| in[1].time_base = threshold->time_base; |
| in[2].time_base = min->time_base; |
| in[3].time_base = max->time_base; |
| in[0].sync = 1; |
| in[0].before = EXT_STOP; |
| in[0].after = EXT_STOP; |
| in[1].sync = 1; |
| in[1].before = EXT_STOP; |
| in[1].after = EXT_STOP; |
| in[2].sync = 1; |
| in[2].before = EXT_STOP; |
| in[2].after = EXT_STOP; |
| in[3].sync = 1; |
| in[3].before = EXT_STOP; |
| in[3].after = EXT_STOP; |
| s->fs.opaque = s; |
| s->fs.on_event = process_frame; |
| |
| ret = ff_framesync_configure(&s->fs); |
| outlink->time_base = s->fs.time_base; |
| |
| return ret; |
| } |
| |
| static int activate(AVFilterContext *ctx) |
| { |
| ThresholdContext *s = ctx->priv; |
| return ff_framesync_activate(&s->fs); |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| ThresholdContext *s = ctx->priv; |
| |
| ff_framesync_uninit(&s->fs); |
| } |
| |
| static const AVFilterPad inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_input, |
| }, |
| { |
| .name = "threshold", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { |
| .name = "min", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { |
| .name = "max", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_output, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_threshold = { |
| .name = "threshold", |
| .description = NULL_IF_CONFIG_SMALL("Threshold first video stream using other video streams."), |
| .priv_size = sizeof(ThresholdContext), |
| .priv_class = &threshold_class, |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .activate = activate, |
| .inputs = inputs, |
| .outputs = outputs, |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS, |
| }; |