git.sesse.net Git - ffmpeg/blob - libavfilter/vf_chromashift.c

   1 /*
   2  * Copyright (c) 2018 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/avstring.h"
  22 #include "libavutil/eval.h"
  23 #include "libavutil/imgutils.h"
  24 #include "libavutil/intreadwrite.h"
  25 #include "libavutil/opt.h"
  26 #include "libavutil/pixdesc.h"
  27
  28 #include "avfilter.h"
  29 #include "formats.h"
  30 #include "internal.h"
  31 #include "framesync.h"
  32 #include "video.h"
  33
  34 typedef struct ChromaShiftContext {
  35     const AVClass *class;
  36     int cbh, cbv;
  37     int crh, crv;
  38     int edge;
  39
  40     int depth;
  41     int height[4];
  42     int width[4];
  43     int linesize[4];
  44
  45     AVFrame *in;
  46
  47     int (*filter_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
  48 } ChromaShiftContext;
  49
  50 static int query_formats(AVFilterContext *ctx)
  51 {
  52     static const enum AVPixelFormat pix_fmts[] = {
  53         AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
  54         AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
  55         AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
  56         AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
  57         AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV440P10,
  58         AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
  59         AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
  60         AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
  61         AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
  62         AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
  63         AV_PIX_FMT_NONE
  64     };
  65
  66     AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
  67     if (!fmts_list)
  68         return AVERROR(ENOMEM);
  69     return ff_set_common_formats(ctx, fmts_list);
  70 }
  71
  72 #define DEFINE_SMEAR(depth, type, div)                                                    \
  73 static int smear_slice ## depth(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)  \
  74 {                                                                                         \
  75     ChromaShiftContext *s = ctx->priv;                                                    \
  76     AVFrame *in = s->in;                                                                  \
  77     AVFrame *out = arg;                                                                   \
  78     const int sulinesize = in->linesize[1] / div;                                         \
  79     const int svlinesize = in->linesize[2] / div;                                         \
  80     const int ulinesize = out->linesize[1] / div;                                         \
  81     const int vlinesize = out->linesize[2] / div;                                         \
  82     const int cbh = s->cbh;                                                               \
  83     const int cbv = s->cbv;                                                               \
  84     const int crh = s->crh;                                                               \
  85     const int crv = s->crv;                                                               \
  86     const int h = s->height[1];                                                           \
  87     const int w = s->width[1];                                                            \
  88     const int slice_start = (h * jobnr) / nb_jobs;                                        \
  89     const int slice_end = (h * (jobnr+1)) / nb_jobs;                                      \
  90     const type *su = (const type *)in->data[1];                                           \
  91     const type *sv = (const type *)in->data[2];                                           \
  92     type *du = (type *)out->data[1] + slice_start * ulinesize;                            \
  93     type *dv = (type *)out->data[2] + slice_start * vlinesize;                            \
  94                                                                                           \
  95     for (int y = slice_start; y < slice_end; y++) {                                       \
  96         const int duy = av_clip(y - cbv, 0, h-1) * sulinesize;                            \
  97         const int dvy = av_clip(y - crv, 0, h-1) * svlinesize;                            \
  98                                                                                           \
  99         for (int x = 0; x < w; x++) {                                                     \
 100             du[x] = su[av_clip(x - cbh, 0, w - 1) + duy];                                 \
 101             dv[x] = sv[av_clip(x - crh, 0, w - 1) + dvy];                                 \
 102         }                                                                                 \
 103                                                                                           \
 104         du += ulinesize;                                                                  \
 105         dv += vlinesize;                                                                  \
 106     }                                                                                     \
 107                                                                                           \
 108     return 0;                                                                             \
 109 }
 110
 111 DEFINE_SMEAR(8, uint8_t, 1)
 112 DEFINE_SMEAR(16, uint16_t, 2)
 113
 114 #define DEFINE_WRAP(depth, type, div)                                                     \
 115 static int wrap_slice ## depth(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)   \
 116 {                                                                                         \
 117     ChromaShiftContext *s = ctx->priv;                                                    \
 118     AVFrame *in = s->in;                                                                  \
 119     AVFrame *out = arg;                                                                   \
 120     const int sulinesize = in->linesize[1] / div;                                         \
 121     const int svlinesize = in->linesize[2] / div;                                         \
 122     const int ulinesize = out->linesize[1] / div;                                         \
 123     const int vlinesize = out->linesize[2] / div;                                         \
 124     const int cbh = s->cbh;                                                               \
 125     const int cbv = s->cbv;                                                               \
 126     const int crh = s->crh;                                                               \
 127     const int crv = s->crv;                                                               \
 128     const int h = s->height[1];                                                           \
 129     const int w = s->width[1];                                                            \
 130     const int slice_start = (h * jobnr) / nb_jobs;                                        \
 131     const int slice_end = (h * (jobnr+1)) / nb_jobs;                                      \
 132     const type *su = (const type *)in->data[1];                                           \
 133     const type *sv = (const type *)in->data[2];                                           \
 134     type *du = (type *)out->data[1] + slice_start * ulinesize;                            \
 135     type *dv = (type *)out->data[2] + slice_start * vlinesize;                            \
 136                                                                                           \
 137     for (int y = slice_start; y < slice_end; y++) {                                       \
 138         int uy = (y - cbv) % h;                                                           \
 139         int vy = (y - crv) % h;                                                           \
 140                                                                                           \
 141         if (uy < 0)                                                                       \
 142             uy += h;                                                                      \
 143         if (vy < 0)                                                                       \
 144             vy += h;                                                                      \
 145                                                                                           \
 146         for (int x = 0; x < w; x++) {                                                     \
 147             int ux = (x - cbh) % w;                                                       \
 148             int vx = (x - crh) % w;                                                       \
 149                                                                                           \
 150             if (ux < 0)                                                                   \
 151                 ux += w;                                                                  \
 152             if (vx < 0)                                                                   \
 153                 vx += w;                                                                  \
 154                                                                                           \
 155             du[x] = su[ux + uy * sulinesize];                                             \
 156             dv[x] = sv[vx + vy * svlinesize];                                             \
 157         }                                                                                 \
 158                                                                                           \
 159         du += ulinesize;                                                                  \
 160         dv += vlinesize;                                                                  \
 161     }                                                                                     \
 162                                                                                           \
 163     return 0;                                                                             \
 164 }
 165
 166 DEFINE_WRAP(8, uint8_t, 1)
 167 DEFINE_WRAP(16, uint16_t, 2)
 168
 169 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
 170 {
 171     AVFilterContext *ctx = inlink->dst;
 172     AVFilterLink *outlink = ctx->outputs[0];
 173     ChromaShiftContext *s = ctx->priv;
 174     AVFrame *out;
 175
 176     out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
 177     if (!out) {
 178         av_frame_free(&in);
 179         return AVERROR(ENOMEM);
 180     }
 181     av_frame_copy_props(out, in);
 182
 183     s->in = in;
 184     av_image_copy_plane(out->data[0] + out->linesize[0],
 185                         out->linesize[0],
 186                         in->data[0], in->linesize[0],
 187                         s->linesize[0], s->height[0]);
 188     ctx->internal->execute(ctx, s->filter_slice, out, NULL,
 189                            FFMIN3(s->height[1],
 190                                   s->height[2],
 191                                   ff_filter_get_nb_threads(ctx)));
 192     s->in = NULL;
 193     av_frame_free(&in);
 194     return ff_filter_frame(outlink, out);
 195 }
 196
 197 static int config_input(AVFilterLink *inlink)
 198 {
 199     AVFilterContext *ctx = inlink->dst;
 200     ChromaShiftContext *s = ctx->priv;
 201     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
 202
 203     s->depth = desc->comp[0].depth;
 204     if (s->edge)
 205         s->filter_slice = s->depth > 8 ? wrap_slice16 : wrap_slice8;
 206     else
 207         s->filter_slice = s->depth > 8 ? smear_slice16 : smear_slice8;
 208     s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
 209     s->height[0] = s->height[3] = inlink->h;
 210     s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
 211     s->width[0] = s->width[3] = inlink->w;
 212
 213     return av_image_fill_linesizes(s->linesize, inlink->format, inlink->w);
 214 }
 215
 216 #define OFFSET(x) offsetof(ChromaShiftContext, x)
 217 #define VF AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
 218
 219 static const AVOption chromashift_options[] = {
 220     { "cbh", "shift chroma-blue horizontally", OFFSET(cbh),  AV_OPT_TYPE_INT,   {.i64=0}, -255, 255, .flags = VF },
 221     { "cbv", "shift chroma-blue vertically",   OFFSET(cbv),  AV_OPT_TYPE_INT,   {.i64=0}, -255, 255, .flags = VF },
 222     { "crh", "shift chroma-red horizontally",  OFFSET(crh),  AV_OPT_TYPE_INT,   {.i64=0}, -255, 255, .flags = VF },
 223     { "crv", "shift chroma-red vertically",    OFFSET(crv),  AV_OPT_TYPE_INT,   {.i64=0}, -255, 255, .flags = VF },
 224     { "edge", "set edge operation",            OFFSET(edge), AV_OPT_TYPE_INT,   {.i64=0},    0,   1, .flags = VF, "edge" },
 225     { "smear",                              0,            0, AV_OPT_TYPE_CONST, {.i64=0},    0,   0, .flags = VF, "edge" },
 226     { "wrap",                               0,            0, AV_OPT_TYPE_CONST, {.i64=1},    0,   0, .flags = VF, "edge" },
 227     { NULL },
 228 };
 229
 230 static const AVFilterPad inputs[] = {
 231     {
 232         .name         = "default",
 233         .type         = AVMEDIA_TYPE_VIDEO,
 234         .filter_frame = filter_frame,
 235         .config_props = config_input,
 236     },
 237     { NULL }
 238 };
 239
 240 static const AVFilterPad outputs[] = {
 241     {
 242         .name = "default",
 243         .type = AVMEDIA_TYPE_VIDEO,
 244     },
 245     { NULL }
 246 };
 247
 248 AVFILTER_DEFINE_CLASS(chromashift);
 249
 250 AVFilter ff_vf_chromashift = {
 251     .name          = "chromashift",
 252     .description   = NULL_IF_CONFIG_SMALL("Shift chroma."),
 253     .priv_size     = sizeof(ChromaShiftContext),
 254     .priv_class    = &chromashift_class,
 255     .query_formats = query_formats,
 256     .outputs       = outputs,
 257     .inputs        = inputs,
 258     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
 259 };