/* * 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/attributes.h" #include "libavutil/common.h" #include "libavutil/imgutils.h" #include "libavutil/opt.h" #include "libavutil/pixdesc.h" #include "avfilter.h" #include "internal.h" #include "limiter.h" #include "video.h" typedef struct ThreadData { AVFrame *in; AVFrame *out; } ThreadData; typedef struct LimiterContext { const AVClass *class; int min; int max; int planes; int nb_planes; int linesize[4]; int width[4]; int height[4]; LimiterDSPContext dsp; } LimiterContext; #define OFFSET(x) offsetof(LimiterContext, x) #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM static const AVOption limiter_options[] = { { "min", "set min value", OFFSET(min), AV_OPT_TYPE_INT, {.i64=0}, 0, 65535, .flags = FLAGS }, { "max", "set max value", OFFSET(max), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, .flags = FLAGS }, { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, .flags = FLAGS }, { NULL } }; AVFILTER_DEFINE_CLASS(limiter); static av_cold int init(AVFilterContext *ctx) { LimiterContext *s = ctx->priv; if (s->min > s->max) return AVERROR(EINVAL); return 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 }; #define LIMITER(n, type) \ static void limiter##n(const uint8_t *ssrc, uint8_t *ddst, \ ptrdiff_t slinesize, ptrdiff_t dlinesize,\ int w, int h, int min, int max) \ { \ const type *src = (const type *)ssrc; \ type *dst = (type *)ddst; \ \ dlinesize /= sizeof(type); \ slinesize /= sizeof(type); \ \ for (int y = 0; y < h; y++) { \ for (int x = 0; x < w; x++) { \ dst[x] = av_clip(src[x], min, max); \ } \ \ dst += dlinesize; \ src += slinesize; \ } \ } LIMITER(8, uint8_t) LIMITER(16, uint16_t) static int config_input(AVFilterLink *inlink) { AVFilterContext *ctx = inlink->dst; LimiterContext *s = ctx->priv; const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); int depth, vsub, hsub, ret; s->nb_planes = av_pix_fmt_count_planes(inlink->format); if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0) return ret; depth = desc->comp[0].depth; 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->max = FFMIN(s->max, (1 << depth) - 1); s->min = FFMIN(s->min, (1 << depth) - 1); if (depth == 8) { s->dsp.limiter = limiter8; } else { s->dsp.limiter = limiter16; } #if ARCH_X86 ff_limiter_init_x86(&s->dsp, desc->comp[0].depth); #endif return 0; } static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) { LimiterContext *s = ctx->priv; ThreadData *td = arg; AVFrame *in = td->in; AVFrame *out = td->out; int p; for (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 (!((1 << p) & s->planes)) { if (out != in) 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->linesize[p], slice_end - slice_start); continue; } s->dsp.limiter(in->data[p] + slice_start * in->linesize[p], out->data[p] + slice_start * out->linesize[p], in->linesize[p], out->linesize[p], s->width[p], slice_end - slice_start, s->min, s->max); } return 0; } static int filter_frame(AVFilterLink *inlink, AVFrame *in) { AVFilterContext *ctx = inlink->dst; LimiterContext *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); } td.out = out; td.in = in; ff_filter_execute(ctx, filter_slice, &td, NULL, FFMIN(s->height[2], ff_filter_get_nb_threads(ctx))); if (out != in) 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) { int ret; ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags); if (ret < 0) return ret; return config_input(ctx->inputs[0]); } static const AVFilterPad inputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, .filter_frame = filter_frame, .config_props = config_input, }, }; const AVFilter ff_vf_limiter = { .name = "limiter", .description = NULL_IF_CONFIG_SMALL("Limit pixels components to the specified range."), .priv_size = sizeof(LimiterContext), .priv_class = &limiter_class, .init = init, FILTER_INPUTS(inputs), FILTER_OUTPUTS(ff_video_default_filterpad), FILTER_PIXFMTS_ARRAY(pix_fmts), .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS, .process_command = process_command, };