libavfilter/vf_fillborders.c
e1dd97bd
 /*
  * Copyright (c) 2017 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/colorspace.h"
 #include "libavutil/common.h"
 #include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"
 #include "avfilter.h"
 #include "drawutils.h"
 #include "formats.h"
 #include "internal.h"
 #include "video.h"
 
 enum { Y, U, V, A };
 enum { R, G, B };
 
 enum FillMode { FM_SMEAR, FM_MIRROR, FM_FIXED, FM_NB_MODES };
 
 typedef struct Borders {
     int left, right, top, bottom;
 } Borders;
 
 typedef struct FillBordersContext {
     const AVClass *class;
     int left, right, top, bottom;
     int mode;
 
     int nb_planes;
     int depth;
     Borders borders[4];
     int planewidth[4];
     int planeheight[4];
     uint8_t fill[4];
     uint8_t yuv_color[4];
     uint8_t rgba_color[4];
 
     void (*fillborders)(struct FillBordersContext *s, AVFrame *frame);
 } FillBordersContext;
 
 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_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_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_GRAY16,
         AV_PIX_FMT_NONE
     };
     AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
     if (!fmts_list)
         return AVERROR(ENOMEM);
     return ff_set_common_formats(ctx, fmts_list);
 }
 
 static void smear_borders8(FillBordersContext *s, AVFrame *frame)
 {
     int p, y;
 
     for (p = 0; p < s->nb_planes; p++) {
         uint8_t *ptr = frame->data[p];
         int linesize = frame->linesize[p];
 
         for (y = s->borders[p].top; y < s->planeheight[p] - s->borders[p].bottom; y++) {
             memset(ptr + y * linesize,
                    *(ptr + y * linesize + s->borders[p].left),
                    s->borders[p].left);
             memset(ptr + y * linesize + s->planewidth[p] - s->borders[p].right,
                    *(ptr + y * linesize + s->planewidth[p] - s->borders[p].right - 1),
                    s->borders[p].right);
         }
 
         for (y = 0; y < s->borders[p].top; y++) {
             memcpy(ptr + y * linesize,
                    ptr + s->borders[p].top * linesize, s->planewidth[p]);
         }
 
         for (y = s->planeheight[p] - s->borders[p].bottom; y < s->planeheight[p]; y++) {
             memcpy(ptr + y * linesize,
                    ptr + (s->planeheight[p] - s->borders[p].bottom - 1) * linesize,
                    s->planewidth[p]);
         }
     }
 }
 
 static void smear_borders16(FillBordersContext *s, AVFrame *frame)
 {
     int p, y, x;
 
     for (p = 0; p < s->nb_planes; p++) {
         uint16_t *ptr = (uint16_t *)frame->data[p];
         int linesize = frame->linesize[p] / 2;
 
         for (y = s->borders[p].top; y < s->planeheight[p] - s->borders[p].bottom; y++) {
             for (x = 0; x < s->borders[p].left; x++) {
                 ptr[y * linesize + x] =  *(ptr + y * linesize + s->borders[p].left);
             }
 
             for (x = 0; x < s->borders[p].right; x++) {
                 ptr[y * linesize + s->planewidth[p] - s->borders[p].right + x] =
                    *(ptr + y * linesize + s->planewidth[p] - s->borders[p].right - 1);
             }
         }
 
         for (y = 0; y < s->borders[p].top; y++) {
             memcpy(ptr + y * linesize,
                    ptr + s->borders[p].top * linesize, s->planewidth[p] * 2);
         }
 
         for (y = s->planeheight[p] - s->borders[p].bottom; y < s->planeheight[p]; y++) {
             memcpy(ptr + y * linesize,
                    ptr + (s->planeheight[p] - s->borders[p].bottom - 1) * linesize,
                    s->planewidth[p] * 2);
         }
     }
 }
 
 static void mirror_borders8(FillBordersContext *s, AVFrame *frame)
 {
     int p, y, x;
 
     for (p = 0; p < s->nb_planes; p++) {
         uint8_t *ptr = frame->data[p];
         int linesize = frame->linesize[p];
 
         for (y = s->borders[p].top; y < s->planeheight[p] - s->borders[p].bottom; y++) {
             for (x = 0; x < s->borders[p].left; x++) {
                 ptr[y * linesize + x] = ptr[y * linesize + s->borders[p].left * 2 - 1 - x];
             }
 
             for (x = 0; x < s->borders[p].right; x++) {
                 ptr[y * linesize + s->planewidth[p] - s->borders[p].right + x] =
                     ptr[y * linesize + s->planewidth[p] - s->borders[p].right - 1 - x];
             }
         }
 
         for (y = 0; y < s->borders[p].top; y++) {
             memcpy(ptr + y * linesize,
                    ptr + (s->borders[p].top * 2 - 1 - y) * linesize,
                    s->planewidth[p]);
         }
 
         for (y = 0; y < s->borders[p].bottom; y++) {
             memcpy(ptr + (s->planeheight[p] - s->borders[p].bottom + y) * linesize,
                    ptr + (s->planeheight[p] - s->borders[p].bottom - 1 - y) * linesize,
                    s->planewidth[p]);
         }
     }
 }
 
 static void mirror_borders16(FillBordersContext *s, AVFrame *frame)
 {
     int p, y, x;
 
     for (p = 0; p < s->nb_planes; p++) {
         uint16_t *ptr = (uint16_t *)frame->data[p];
         int linesize = frame->linesize[p] / 2;
 
         for (y = s->borders[p].top; y < s->planeheight[p] - s->borders[p].bottom; y++) {
             for (x = 0; x < s->borders[p].left; x++) {
                 ptr[y * linesize + x] = ptr[y * linesize + s->borders[p].left * 2 - 1 - x];
             }
 
             for (x = 0; x < s->borders[p].right; x++) {
                 ptr[y * linesize + s->planewidth[p] - s->borders[p].right + x] =
                     ptr[y * linesize + s->planewidth[p] - s->borders[p].right - 1 - x];
             }
         }
 
         for (y = 0; y < s->borders[p].top; y++) {
             memcpy(ptr + y * linesize,
                    ptr + (s->borders[p].top * 2 - 1 - y) * linesize,
                    s->planewidth[p] * 2);
         }
 
         for (y = 0; y < s->borders[p].bottom; y++) {
             memcpy(ptr + (s->planeheight[p] - s->borders[p].bottom + y) * linesize,
                    ptr + (s->planeheight[p] - s->borders[p].bottom - 1 - y) * linesize,
                    s->planewidth[p] * 2);
         }
     }
 }
 
 static void fixed_borders8(FillBordersContext *s, AVFrame *frame)
 {
     int p, y;
 
     for (p = 0; p < s->nb_planes; p++) {
         uint8_t *ptr = frame->data[p];
         uint8_t fill = s->fill[p];
         int linesize = frame->linesize[p];
 
         for (y = s->borders[p].top; y < s->planeheight[p] - s->borders[p].bottom; y++) {
             memset(ptr + y * linesize, fill, s->borders[p].left);
             memset(ptr + y * linesize + s->planewidth[p] - s->borders[p].right, fill,
                    s->borders[p].right);
         }
 
         for (y = 0; y < s->borders[p].top; y++) {
             memset(ptr + y * linesize, fill, s->planewidth[p]);
         }
 
         for (y = s->planeheight[p] - s->borders[p].bottom; y < s->planeheight[p]; y++) {
             memset(ptr + y * linesize, fill, s->planewidth[p]);
         }
     }
 }
 
 static void fixed_borders16(FillBordersContext *s, AVFrame *frame)
 {
     int p, y, x;
 
     for (p = 0; p < s->nb_planes; p++) {
         uint16_t *ptr = (uint16_t *)frame->data[p];
         uint16_t fill = s->fill[p] << (s->depth - 8);
         int linesize = frame->linesize[p] / 2;
 
         for (y = s->borders[p].top; y < s->planeheight[p] - s->borders[p].bottom; y++) {
             for (x = 0; x < s->borders[p].left; x++) {
                 ptr[y * linesize + x] = fill;
             }
 
             for (x = 0; x < s->borders[p].right; x++) {
                 ptr[y * linesize + s->planewidth[p] - s->borders[p].right + x] = fill;
             }
         }
 
         for (y = 0; y < s->borders[p].top; y++) {
             for (x = 0; x < s->planewidth[p]; x++) {
                 ptr[y * linesize + x] = fill;
             }
         }
 
         for (y = s->planeheight[p] - s->borders[p].bottom; y < s->planeheight[p]; y++) {
             for (x = 0; x < s->planewidth[p]; x++) {
                 ptr[y * linesize + x] = fill;
             }
         }
     }
 }
 
 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
 {
     FillBordersContext *s = inlink->dst->priv;
 
     s->fillborders(s, frame);
 
     return ff_filter_frame(inlink->dst->outputs[0], frame);
 }
 
 static int config_input(AVFilterLink *inlink)
 {
     AVFilterContext *ctx = inlink->dst;
     FillBordersContext *s = ctx->priv;
     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
 
     s->nb_planes = desc->nb_components;
     s->depth = desc->comp[0].depth;
 
     s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
     s->planeheight[0] = s->planeheight[3] = inlink->h;
     s->planewidth[1]  = s->planewidth[2]  = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
     s->planewidth[0]  = s->planewidth[3]  = inlink->w;
 
     s->borders[0].left   = s->borders[3].left = s->left;
     s->borders[0].right  = s->borders[3].right = s->right;
     s->borders[0].top    = s->borders[3].top = s->top;
     s->borders[0].bottom = s->borders[3].bottom = s->bottom;
 
     s->borders[1].left   = s->left >> desc->log2_chroma_w;
     s->borders[1].right  = s->right >> desc->log2_chroma_w;
     s->borders[1].top    = s->top >> desc->log2_chroma_h;
     s->borders[1].bottom = s->bottom >> desc->log2_chroma_h;
 
     s->borders[2].left   = s->left >> desc->log2_chroma_w;
     s->borders[2].right  = s->right >> desc->log2_chroma_w;
     s->borders[2].top    = s->top >> desc->log2_chroma_h;
     s->borders[2].bottom = s->bottom >> desc->log2_chroma_h;
 
     if (inlink->w < s->left + s->right ||
         inlink->w <= s->left ||
         inlink->w <= s->right ||
         inlink->h < s->top + s->bottom ||
         inlink->h <= s->top ||
         inlink->h <= s->bottom ||
         inlink->w < s->left * 2 ||
         inlink->w < s->right * 2 ||
         inlink->h < s->top * 2 ||
         inlink->h < s->bottom * 2) {
         av_log(ctx, AV_LOG_ERROR, "Borders are bigger than input frame size.\n");
         return AVERROR(EINVAL);
     }
 
     switch (s->mode) {
     case FM_SMEAR:  s->fillborders = s->depth <= 8 ? smear_borders8  : smear_borders16;  break;
     case FM_MIRROR: s->fillborders = s->depth <= 8 ? mirror_borders8 : mirror_borders16; break;
     case FM_FIXED:  s->fillborders = s->depth <= 8 ? fixed_borders8  : fixed_borders16;  break;
     }
 
     s->yuv_color[Y] = RGB_TO_Y_CCIR(s->rgba_color[R], s->rgba_color[G], s->rgba_color[B]);
     s->yuv_color[U] = RGB_TO_U_CCIR(s->rgba_color[R], s->rgba_color[G], s->rgba_color[B], 0);
     s->yuv_color[V] = RGB_TO_V_CCIR(s->rgba_color[R], s->rgba_color[G], s->rgba_color[B], 0);
     s->yuv_color[A] = s->rgba_color[A];
 
     if (desc->flags & AV_PIX_FMT_FLAG_RGB) {
         uint8_t rgba_map[4];
         int i;
 
         ff_fill_rgba_map(rgba_map, inlink->format);
         for (i = 0; i < 4; i++)
             s->fill[rgba_map[i]] = s->rgba_color[i];
     } else {
         memcpy(s->fill, s->yuv_color, sizeof(s->yuv_color));
     }
 
     return 0;
 }
 
 #define OFFSET(x) offsetof(FillBordersContext, x)
 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 
 static const AVOption fillborders_options[] = {
     { "left",   "set the left fill border",   OFFSET(left),   AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX,    FLAGS },
     { "right",  "set the right fill border",  OFFSET(right),  AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX,    FLAGS },
     { "top",    "set the top fill border",    OFFSET(top),    AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX,    FLAGS },
     { "bottom", "set the bottom fill border", OFFSET(bottom), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX,    FLAGS },
     { "mode",   "set the fill borders mode",  OFFSET(mode),   AV_OPT_TYPE_INT, {.i64=FM_SMEAR}, 0, FM_NB_MODES-1, FLAGS, "mode" },
         { "smear",  NULL, 0, AV_OPT_TYPE_CONST, {.i64=FM_SMEAR},  0, 0, FLAGS, "mode" },
         { "mirror", NULL, 0, AV_OPT_TYPE_CONST, {.i64=FM_MIRROR}, 0, 0, FLAGS, "mode" },
         { "fixed",  NULL, 0, AV_OPT_TYPE_CONST, {.i64=FM_FIXED},  0, 0, FLAGS, "mode" },
     { "color",  "set the color for the fixed mode", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str = "black"}, .flags = FLAGS },
     { NULL }
 };
 
 AVFILTER_DEFINE_CLASS(fillborders);
 
 static const AVFilterPad fillborders_inputs[] = {
     {
         .name           = "default",
         .type           = AVMEDIA_TYPE_VIDEO,
         .config_props   = config_input,
         .filter_frame   = filter_frame,
         .needs_writable = 1,
     },
     { NULL }
 };
 
 static const AVFilterPad fillborders_outputs[] = {
     {
         .name = "default",
         .type = AVMEDIA_TYPE_VIDEO,
     },
     { NULL }
 };
 
 AVFilter ff_vf_fillborders = {
     .name          = "fillborders",
     .description   = NULL_IF_CONFIG_SMALL("Fill borders of the input video."),
     .priv_size     = sizeof(FillBordersContext),
     .priv_class    = &fillborders_class,
     .query_formats = query_formats,
     .inputs        = fillborders_inputs,
     .outputs       = fillborders_outputs,
     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
 };