LCOV - code coverage report
Current view: top level - libavfilter - vf_bitplanenoise.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 74 0.0 %
Date: 2017-12-16 13:57:32 Functions: 0 3 0.0 %

          Line data    Source code
       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/opt.h"
      22             : #include "libavutil/imgutils.h"
      23             : #include "avfilter.h"
      24             : #include "formats.h"
      25             : #include "internal.h"
      26             : #include "video.h"
      27             : 
      28             : typedef struct BPNContext {
      29             :     const AVClass *class;
      30             : 
      31             :     int bitplane;
      32             :     int filter;
      33             : 
      34             :     int nb_planes;
      35             :     int planeheight[4];
      36             :     int planewidth[4];
      37             :     int depth;
      38             : } BPNContext;
      39             : 
      40             : #define OFFSET(x) offsetof(BPNContext, x)
      41             : #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
      42             : static const AVOption bitplanenoise_options[] = {
      43             :     { "bitplane", "set bit plane to use for measuring noise",  OFFSET(bitplane), AV_OPT_TYPE_INT,  {.i64=1}, 1, 16, FLAGS},
      44             :     { "filter",   "show noisy pixels",                         OFFSET(filter),   AV_OPT_TYPE_BOOL, {.i64=0}, 0,  1, FLAGS},
      45             :     { NULL }
      46             : };
      47             : 
      48             : AVFILTER_DEFINE_CLASS(bitplanenoise);
      49             : 
      50           0 : static int query_formats(AVFilterContext *ctx)
      51             : {
      52             :     static const enum AVPixelFormat pixfmts[] = {
      53             :         AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P,
      54             :         AV_PIX_FMT_YUV440P,
      55             :         AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
      56             :         AV_PIX_FMT_YUVJ440P,
      57             :         AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV420P9,
      58             :         AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV420P10,
      59             :         AV_PIX_FMT_YUV440P10,
      60             :         AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
      61             :         AV_PIX_FMT_YUV440P12,
      62             :         AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
      63             :         AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV420P16,
      64             :         AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
      65             :         AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
      66             :         AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
      67             :         AV_PIX_FMT_NONE
      68             :     };
      69             : 
      70           0 :     AVFilterFormats *formats = ff_make_format_list(pixfmts);
      71           0 :     if (!formats)
      72           0 :         return AVERROR(ENOMEM);
      73           0 :     return ff_set_common_formats(ctx, formats);
      74             : }
      75             : 
      76           0 : static int config_input(AVFilterLink *inlink)
      77             : {
      78           0 :     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
      79           0 :     AVFilterContext *ctx = inlink->dst;
      80           0 :     BPNContext *s = ctx->priv;
      81             : 
      82           0 :     s->nb_planes = desc->nb_components;
      83             : 
      84           0 :     s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
      85           0 :     s->planeheight[0] = s->planeheight[3] = inlink->h;
      86           0 :     s->planewidth[1]  = s->planewidth[2]  = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
      87           0 :     s->planewidth[0]  = s->planewidth[3]  = inlink->w;
      88             : 
      89           0 :     s->depth = desc->comp[0].depth;
      90             : 
      91           0 :     return 0;
      92             : }
      93             : 
      94             : #define CHECK_BIT(x, a, b, c) { \
      95             :     bit = (((val[(x)] & mask) == (val[(x) + (a)] & mask)) + \
      96             :            ((val[(x)] & mask) == (val[(x) + (b)] & mask)) + \
      97             :            ((val[(x)] & mask) == (val[(x) + (c)] & mask))) > 1; \
      98             :     if (dst) \
      99             :         dst[(x)] = factor * bit; \
     100             :     stats[plane] += bit; }
     101             : 
     102           0 : static int filter_frame(AVFilterLink *inlink, AVFrame *in)
     103             : {
     104           0 :     AVFilterContext *ctx = inlink->dst;
     105           0 :     AVFilterLink *outlink = ctx->outputs[0];
     106           0 :     BPNContext *s = ctx->priv;
     107           0 :     const int mask = (1 << (s->bitplane - 1));
     108           0 :     const int factor = (1 << s->depth) - 1;
     109           0 :     float stats[4] = { 0 };
     110             :     char metabuf[128];
     111             :     int plane, y, x, bit;
     112           0 :     AVFrame *out = s->filter ? NULL : in;
     113             : 
     114           0 :     if (!out) {
     115           0 :         out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
     116           0 :         if (!out) {
     117           0 :             av_frame_free(&in);
     118           0 :             return AVERROR(ENOMEM);
     119             :         }
     120           0 :         av_frame_copy_props(out, in);
     121             :     }
     122             : 
     123           0 :     if (s->depth <= 8) {
     124           0 :         for (plane = 0; plane < s->nb_planes; plane++) {
     125           0 :             const int linesize = in->linesize[plane];
     126           0 :             const int dlinesize = out->linesize[plane];
     127           0 :             uint8_t *val = in->data[plane];
     128           0 :             uint8_t *dst = s->filter ? out->data[plane]: NULL;
     129             : 
     130           0 :             for (y = 0; y < s->planeheight[plane] - 1; y++) {
     131           0 :                 CHECK_BIT(0, 1, 1 + linesize, linesize)
     132             : 
     133           0 :                 for (x = 1; x < s->planewidth[plane] - 1; x++) {
     134           0 :                     CHECK_BIT(x, -1, 1, linesize)
     135             :                 }
     136             : 
     137           0 :                 CHECK_BIT(x, -1, -1 + linesize, linesize)
     138             : 
     139           0 :                 val += linesize;
     140           0 :                 if (dst)
     141           0 :                     dst += dlinesize;
     142             :             }
     143             : 
     144           0 :             CHECK_BIT(0, 1, 1 - linesize, -linesize)
     145             : 
     146           0 :             for (x = 1; x < s->planewidth[plane] - 1; x++) {
     147           0 :                 CHECK_BIT(x, -1, 1, -linesize)
     148             :             }
     149             : 
     150           0 :             CHECK_BIT(x, -1, -1 - linesize, -linesize)
     151             :         }
     152             :     } else {
     153           0 :         for (plane = 0; plane < s->nb_planes; plane++) {
     154           0 :             const int linesize = in->linesize[plane] / 2;
     155           0 :             const int dlinesize = out->linesize[plane] / 2;
     156           0 :             uint16_t *val = (uint16_t *)in->data[plane];
     157           0 :             uint16_t *dst = s->filter ? (uint16_t *)out->data[plane] : NULL;
     158             : 
     159           0 :             val = (uint16_t *)in->data[plane];
     160           0 :             for (y = 0; y < s->planeheight[plane] - 1; y++) {
     161           0 :                 CHECK_BIT(0, 1, 1 + linesize, linesize)
     162             : 
     163           0 :                 for (x = 1; x < s->planewidth[plane] - 1; x++) {
     164           0 :                     CHECK_BIT(x, -1, 1, linesize)
     165             :                 }
     166             : 
     167           0 :                 CHECK_BIT(x, -1, -1 + linesize, linesize)
     168             : 
     169           0 :                 val += linesize;
     170           0 :                 if (dst)
     171           0 :                     dst += dlinesize;
     172             :             }
     173             : 
     174           0 :             CHECK_BIT(0, 1, 1 - linesize, -linesize)
     175             : 
     176           0 :             for (x = 1; x < s->planewidth[plane] - 1; x++) {
     177           0 :                 CHECK_BIT(x, -1, 1, -linesize)
     178             :             }
     179             : 
     180           0 :             CHECK_BIT(x, -1, -1 -linesize, -linesize)
     181             :         }
     182             :     }
     183             : 
     184           0 :     for (plane = 0; plane < s->nb_planes; plane++) {
     185             :         char key[32];
     186             : 
     187           0 :         stats[plane] /= s->planewidth[plane] * s->planeheight[plane];
     188           0 :         snprintf(key, sizeof(key), "lavfi.bitplanenoise.%d.%d", plane, s->bitplane);
     189           0 :         snprintf(metabuf, sizeof(metabuf), "%f", 1. - 2.* fabs((stats[plane] - 0.5)));
     190           0 :         av_dict_set(&out->metadata, key, metabuf, 0);
     191             :     }
     192             : 
     193           0 :     if (out != in)
     194           0 :         av_frame_free(&in);
     195             : 
     196           0 :     return ff_filter_frame(outlink, out);
     197             : }
     198             : 
     199             : static const AVFilterPad inputs[] = {
     200             :     {
     201             :         .name           = "default",
     202             :         .type           = AVMEDIA_TYPE_VIDEO,
     203             :         .filter_frame   = filter_frame,
     204             :         .config_props   = config_input,
     205             :     },
     206             :     { NULL }
     207             : };
     208             : 
     209             : static const AVFilterPad outputs[] = {
     210             :     {
     211             :         .name = "default",
     212             :         .type = AVMEDIA_TYPE_VIDEO,
     213             :     },
     214             :     { NULL }
     215             : };
     216             : 
     217             : AVFilter ff_vf_bitplanenoise = {
     218             :     .name           = "bitplanenoise",
     219             :     .description    = NULL_IF_CONFIG_SMALL("Measure bit plane noise."),
     220             :     .priv_size      = sizeof(BPNContext),
     221             :     .query_formats  = query_formats,
     222             :     .inputs         = inputs,
     223             :     .outputs        = outputs,
     224             :     .priv_class     = &bitplanenoise_class,
     225             :     .flags          = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
     226             : };

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