libavfilter/vf_maskedclamp.c

   1 /*
   2  * Copyright (c) 2016 Paul B Mahol
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include "libavutil/imgutils.h"
  22 #include "libavutil/pixdesc.h"
  23 #include "libavutil/opt.h"
  24 #include "avfilter.h"
  25 #include "filters.h"
  26 #include "video.h"
  27 #include "framesync.h"
  28 #include "maskedclamp.h"
  29
  30 #define OFFSET(x) offsetof(MaskedClampContext, x)
  31 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
  32
  33 typedef struct ThreadData {
  34     AVFrame *b, *o, *m, *d;
  35 } ThreadData;
  36
  37 typedef struct MaskedClampContext {
  38     const AVClass *class;
  39
  40     int planes;
  41     int undershoot;
  42     int overshoot;
  43
  44     int linesize[4];
  45     int width[4], height[4];
  46     int nb_planes;
  47     int depth;
  48     FFFrameSync fs;
  49
  50     MaskedClampDSPContext dsp;
  51 } MaskedClampContext;
  52
  53 static const AVOption maskedclamp_options[] = {
  54     { "undershoot", "set undershoot", OFFSET(undershoot), AV_OPT_TYPE_INT, {.i64=0},   0, UINT16_MAX, FLAGS },
  55     { "overshoot",  "set overshoot",  OFFSET(overshoot),  AV_OPT_TYPE_INT, {.i64=0},   0, UINT16_MAX, FLAGS },
  56     { "planes",     "set planes",     OFFSET(planes),     AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF,        FLAGS },
  57     { NULL }
  58 };
  59
  60 AVFILTER_DEFINE_CLASS(maskedclamp);
  61
  62 static const enum AVPixelFormat pix_fmts[] = {
  63     AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
  64     AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
  65     AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
  66     AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
  67     AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
  68     AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
  69     AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
  70     AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
  71     AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
  72     AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
  73     AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
  74     AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
  75     AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
  76     AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
  77     AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
  78     AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
  79     AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
  80     AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
  81     AV_PIX_FMT_NONE
  82 };
  83
  84 static int maskedclamp_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
  85 {
  86     MaskedClampContext *s = ctx->priv;
  87     ThreadData *td = arg;
  88     int p;
  89
  90     for (p = 0; p < s->nb_planes; p++) {
  91         const ptrdiff_t blinesize = td->b->linesize[p];
  92         const ptrdiff_t brightlinesize = td->m->linesize[p];
  93         const ptrdiff_t darklinesize = td->o->linesize[p];
  94         const ptrdiff_t dlinesize = td->d->linesize[p];
  95         const int w = s->width[p];
  96         const int h = s->height[p];
  97         const int slice_start = (h * jobnr) / nb_jobs;
  98         const int slice_end = (h * (jobnr+1)) / nb_jobs;
  99         const uint8_t *bsrc = td->b->data[p] + slice_start * blinesize;
 100         const uint8_t *darksrc = td->o->data[p] + slice_start * darklinesize;
 101         const uint8_t *brightsrc = td->m->data[p] + slice_start * brightlinesize;
 102         uint8_t *dst = td->d->data[p] + slice_start * dlinesize;
 103         const int undershoot = s->undershoot;
 104         const int overshoot = s->overshoot;
 105         int y;
 106
 107         if (!((1 << p) & s->planes)) {
 108             av_image_copy_plane(dst, dlinesize, bsrc, blinesize,
 109                                 s->linesize[p], slice_end - slice_start);
 110             continue;
 111         }
 112
 113         for (y = slice_start; y < slice_end; y++) {
 114             s->dsp.maskedclamp(bsrc, dst, darksrc, brightsrc, w, undershoot, overshoot);
 115
 116             dst  += dlinesize;
 117             bsrc += blinesize;
 118             darksrc += darklinesize;
 119             brightsrc += brightlinesize;
 120         }
 121     }
 122
 123     return 0;
 124 }
 125
 126 static int process_frame(FFFrameSync *fs)
 127 {
 128     AVFilterContext *ctx = fs->parent;
 129     MaskedClampContext *s = fs->opaque;
 130     AVFilterLink *outlink = ctx->outputs[0];
 131     AVFrame *out, *base, *dark, *bright;
 132     int ret;
 133
 134     if ((ret = ff_framesync_get_frame(&s->fs, 0, &base,   0)) < 0 ||
 135         (ret = ff_framesync_get_frame(&s->fs, 1, &dark,   0)) < 0 ||
 136         (ret = ff_framesync_get_frame(&s->fs, 2, &bright, 0)) < 0)
 137         return ret;
 138
 139     if (ctx->is_disabled) {
 140         out = av_frame_clone(base);
 141         if (!out)
 142             return AVERROR(ENOMEM);
 143     } else {
 144         ThreadData td;
 145
 146         out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
 147         if (!out)
 148             return AVERROR(ENOMEM);
 149         av_frame_copy_props(out, base);
 150
 151         td.b = base;
 152         td.o = dark;
 153         td.m = bright;
 154         td.d = out;
 155
 156         ff_filter_execute(ctx, maskedclamp_slice, &td, NULL,
 157                           FFMIN(s->height[0], ff_filter_get_nb_threads(ctx)));
 158     }
 159     out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
 160
 161     return ff_filter_frame(outlink, out);
 162 }
 163
 164 #define MASKEDCLAMP(type, name)                                                   \
 165 static void maskedclamp##name(const uint8_t *bbsrc, uint8_t *ddst,                \
 166                               const uint8_t *ddarksrc, const uint8_t *bbrightsrc, \
 167                               int w, int undershoot, int overshoot)               \
 168 {                                                                                 \
 169     const type *bsrc = (const type *)bbsrc;                                       \
 170     const type *darksrc = (const type *)ddarksrc;                                 \
 171     const type *brightsrc = (const type *)bbrightsrc;                             \
 172     type *dst = (type *)ddst;                                                     \
 173                                                                                   \
 174     for (int x = 0; x < w; x++) {                                                 \
 175         dst[x] = FFMAX(bsrc[x], darksrc[x] - undershoot);                         \
 176         dst[x] = FFMIN(dst[x], brightsrc[x] + overshoot);                         \
 177     }                                                                             \
 178 }
 179
 180 MASKEDCLAMP(uint8_t, 8)
 181 MASKEDCLAMP(uint16_t, 16)
 182
 183 static int config_input(AVFilterLink *inlink)
 184 {
 185     AVFilterContext *ctx = inlink->dst;
 186     MaskedClampContext *s = ctx->priv;
 187     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
 188     int vsub, hsub, ret;
 189
 190     s->nb_planes = av_pix_fmt_count_planes(inlink->format);
 191
 192     if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
 193         return ret;
 194
 195     hsub = desc->log2_chroma_w;
 196     vsub = desc->log2_chroma_h;
 197     s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
 198     s->height[0] = s->height[3] = inlink->h;
 199     s->width[1]  = s->width[2]  = AV_CEIL_RSHIFT(inlink->w, hsub);
 200     s->width[0]  = s->width[3]  = inlink->w;
 201
 202     s->depth = desc->comp[0].depth;
 203     s->undershoot = FFMIN(s->undershoot, (1 << s->depth) - 1);
 204     s->overshoot = FFMIN(s->overshoot, (1 << s->depth) - 1);
 205
 206     if (s->depth <= 8)
 207         s->dsp.maskedclamp = maskedclamp8;
 208     else
 209         s->dsp.maskedclamp = maskedclamp16;
 210
 211 #if ARCH_X86
 212     ff_maskedclamp_init_x86(&s->dsp, s->depth);
 213 #endif
 214
 215     return 0;
 216 }
 217
 218 static int config_output(AVFilterLink *outlink)
 219 {
 220     AVFilterContext *ctx = outlink->src;
 221     MaskedClampContext *s = ctx->priv;
 222     AVFilterLink *base = ctx->inputs[0];
 223     AVFilterLink *dark = ctx->inputs[1];
 224     AVFilterLink *bright = ctx->inputs[2];
 225     FilterLink *il = ff_filter_link(base);
 226     FilterLink *ol = ff_filter_link(outlink);
 227     FFFrameSyncIn *in;
 228     int ret;
 229
 230     if (base->w != dark->w   || base->h != dark->h ||
 231         base->w != bright->w || base->h != bright->h) {
 232         av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
 233                "(size %dx%d) do not match the corresponding "
 234                "second input link %s parameters (%dx%d) "
 235                "and/or third input link %s parameters (size %dx%d)\n",
 236                ctx->input_pads[0].name, base->w, base->h,
 237                ctx->input_pads[1].name, dark->w, dark->h,
 238                ctx->input_pads[2].name, bright->w, bright->h);
 239         return AVERROR(EINVAL);
 240     }
 241
 242     outlink->w = base->w;
 243     outlink->h = base->h;
 244     outlink->sample_aspect_ratio = base->sample_aspect_ratio;
 245     ol->frame_rate = il->frame_rate;
 246
 247     if ((ret = ff_framesync_init(&s->fs, ctx, 3)) < 0)
 248         return ret;
 249
 250     in = s->fs.in;
 251     in[0].time_base = base->time_base;
 252     in[1].time_base = dark->time_base;
 253     in[2].time_base = bright->time_base;
 254     in[0].sync   = 1;
 255     in[0].before = EXT_STOP;
 256     in[0].after  = EXT_INFINITY;
 257     in[1].sync   = 1;
 258     in[1].before = EXT_STOP;
 259     in[1].after  = EXT_INFINITY;
 260     in[2].sync   = 1;
 261     in[2].before = EXT_STOP;
 262     in[2].after  = EXT_INFINITY;
 263     s->fs.opaque   = s;
 264     s->fs.on_event = process_frame;
 265
 266     ret = ff_framesync_configure(&s->fs);
 267     outlink->time_base = s->fs.time_base;
 268
 269     return ret;
 270 }
 271
 272 static int activate(AVFilterContext *ctx)
 273 {
 274     MaskedClampContext *s = ctx->priv;
 275     return ff_framesync_activate(&s->fs);
 276 }
 277
 278 static av_cold void uninit(AVFilterContext *ctx)
 279 {
 280     MaskedClampContext *s = ctx->priv;
 281
 282     ff_framesync_uninit(&s->fs);
 283 }
 284
 285 static const AVFilterPad maskedclamp_inputs[] = {
 286     {
 287         .name         = "base",
 288         .type         = AVMEDIA_TYPE_VIDEO,
 289         .config_props = config_input,
 290     },
 291     {
 292         .name         = "dark",
 293         .type         = AVMEDIA_TYPE_VIDEO,
 294     },
 295     {
 296         .name         = "bright",
 297         .type         = AVMEDIA_TYPE_VIDEO,
 298     },
 299 };
 300
 301 static const AVFilterPad maskedclamp_outputs[] = {
 302     {
 303         .name          = "default",
 304         .type          = AVMEDIA_TYPE_VIDEO,
 305         .config_props  = config_output,
 306     },
 307 };
 308
 309 const FFFilter ff_vf_maskedclamp = {
 310     .p.name        = "maskedclamp",
 311     .p.description = NULL_IF_CONFIG_SMALL("Clamp first stream with second stream and third stream."),
 312     .p.priv_class  = &maskedclamp_class,
 313     .p.flags       = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
 314                      AVFILTER_FLAG_SLICE_THREADS,
 315     .priv_size     = sizeof(MaskedClampContext),
 316     .uninit        = uninit,
 317     .activate      = activate,
 318     FILTER_INPUTS(maskedclamp_inputs),
 319     FILTER_OUTPUTS(maskedclamp_outputs),
 320     FILTER_PIXFMTS_ARRAY(pix_fmts),
 321     .process_command = ff_filter_process_command,
 322 };