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  1. /*
  2.  * Copyright (c) 2011 Stefano Sabatini
  3.  * This file is part of FFmpeg.
  4.  *
  5.  * FFmpeg is free software; you can redistribute it and/or
  6.  * modify it under the terms of the GNU Lesser General Public
  7.  * License as published by the Free Software Foundation; either
  8.  * version 2.1 of the License, or (at your option) any later version.
  9.  *
  10.  * FFmpeg is distributed in the hope that it will be useful,
  11.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13.  * Lesser General Public License for more details.
  14.  *
  15.  * You should have received a copy of the GNU Lesser General Public
  16.  * License along with FFmpeg; if not, write to the Free Software
  17.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  18.  */
  19.  
  20. /**
  21.  * @file
  22.  * filter for showing textual video frame information
  23.  */
  24.  
  25. #include <inttypes.h>
  26.  
  27. #include "libavutil/adler32.h"
  28. #include "libavutil/display.h"
  29. #include "libavutil/imgutils.h"
  30. #include "libavutil/internal.h"
  31. #include "libavutil/pixdesc.h"
  32. #include "libavutil/stereo3d.h"
  33. #include "libavutil/timestamp.h"
  34.  
  35. #include "avfilter.h"
  36. #include "internal.h"
  37. #include "video.h"
  38.  
  39. static void dump_stereo3d(AVFilterContext *ctx, AVFrameSideData *sd)
  40. {
  41.     AVStereo3D *stereo;
  42.  
  43.     av_log(ctx, AV_LOG_INFO, "stereoscopic information: ");
  44.     if (sd->size < sizeof(*stereo)) {
  45.         av_log(ctx, AV_LOG_INFO, "invalid data");
  46.         return;
  47.     }
  48.  
  49.     stereo = (AVStereo3D *)sd->data;
  50.  
  51.     av_log(ctx, AV_LOG_INFO, "type - ");
  52.     switch (stereo->type) {
  53.     case AV_STEREO3D_2D:                  av_log(ctx, AV_LOG_INFO, "2D");                     break;
  54.     case AV_STEREO3D_SIDEBYSIDE:          av_log(ctx, AV_LOG_INFO, "side by side");           break;
  55.     case AV_STEREO3D_TOPBOTTOM:           av_log(ctx, AV_LOG_INFO, "top and bottom");         break;
  56.     case AV_STEREO3D_FRAMESEQUENCE:       av_log(ctx, AV_LOG_INFO, "frame alternate");        break;
  57.     case AV_STEREO3D_CHECKERBOARD:        av_log(ctx, AV_LOG_INFO, "checkerboard");           break;
  58.     case AV_STEREO3D_LINES:               av_log(ctx, AV_LOG_INFO, "interleaved lines");      break;
  59.     case AV_STEREO3D_COLUMNS:             av_log(ctx, AV_LOG_INFO, "interleaved columns");    break;
  60.     case AV_STEREO3D_SIDEBYSIDE_QUINCUNX: av_log(ctx, AV_LOG_INFO, "side by side "
  61.                                                                    "(quincunx subsampling)"); break;
  62.     default:                              av_log(ctx, AV_LOG_WARNING, "unknown");             break;
  63.     }
  64.  
  65.     if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
  66.         av_log(ctx, AV_LOG_INFO, " (inverted)");
  67. }
  68.  
  69. static void update_sample_stats(const uint8_t *src, int len, int64_t *sum, int64_t *sum2)
  70. {
  71.     int i;
  72.  
  73.     for (i = 0; i < len; i++) {
  74.         *sum += src[i];
  75.         *sum2 += src[i] * src[i];
  76.     }
  77. }
  78.  
  79. static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
  80. {
  81.     AVFilterContext *ctx = inlink->dst;
  82.     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
  83.     uint32_t plane_checksum[4] = {0}, checksum = 0;
  84.     int64_t sum[4] = {0}, sum2[4] = {0};
  85.     int32_t pixelcount[4] = {0};
  86.     int i, plane, vsub = desc->log2_chroma_h;
  87.  
  88.     for (plane = 0; plane < 4 && frame->data[plane] && frame->linesize[plane]; plane++) {
  89.         uint8_t *data = frame->data[plane];
  90.         int h = plane == 1 || plane == 2 ? FF_CEIL_RSHIFT(inlink->h, vsub) : inlink->h;
  91.         int linesize = av_image_get_linesize(frame->format, frame->width, plane);
  92.  
  93.         if (linesize < 0)
  94.             return linesize;
  95.  
  96.         for (i = 0; i < h; i++) {
  97.             plane_checksum[plane] = av_adler32_update(plane_checksum[plane], data, linesize);
  98.             checksum = av_adler32_update(checksum, data, linesize);
  99.  
  100.             update_sample_stats(data, linesize, sum+plane, sum2+plane);
  101.             pixelcount[plane] += linesize;
  102.             data += frame->linesize[plane];
  103.         }
  104.     }
  105.  
  106.     av_log(ctx, AV_LOG_INFO,
  107.            "n:%4"PRId64" pts:%7s pts_time:%-7s pos:%9"PRId64" "
  108.            "fmt:%s sar:%d/%d s:%dx%d i:%c iskey:%d type:%c "
  109.            "checksum:%08"PRIX32" plane_checksum:[%08"PRIX32,
  110.            inlink->frame_count,
  111.            av_ts2str(frame->pts), av_ts2timestr(frame->pts, &inlink->time_base), av_frame_get_pkt_pos(frame),
  112.            desc->name,
  113.            frame->sample_aspect_ratio.num, frame->sample_aspect_ratio.den,
  114.            frame->width, frame->height,
  115.            !frame->interlaced_frame ? 'P' :         /* Progressive  */
  116.            frame->top_field_first   ? 'T' : 'B',    /* Top / Bottom */
  117.            frame->key_frame,
  118.            av_get_picture_type_char(frame->pict_type),
  119.            checksum, plane_checksum[0]);
  120.  
  121.     for (plane = 1; plane < 4 && frame->data[plane] && frame->linesize[plane]; plane++)
  122.         av_log(ctx, AV_LOG_INFO, " %08"PRIX32, plane_checksum[plane]);
  123.     av_log(ctx, AV_LOG_INFO, "] mean:[");
  124.     for (plane = 0; plane < 4 && frame->data[plane] && frame->linesize[plane]; plane++)
  125.         av_log(ctx, AV_LOG_INFO, "%"PRId64" ", (sum[plane] + pixelcount[plane]/2) / pixelcount[plane]);
  126.     av_log(ctx, AV_LOG_INFO, "\b] stdev:[");
  127.     for (plane = 0; plane < 4 && frame->data[plane] && frame->linesize[plane]; plane++)
  128.         av_log(ctx, AV_LOG_INFO, "%3.1f ",
  129.                sqrt((sum2[plane] - sum[plane]*(double)sum[plane]/pixelcount[plane])/pixelcount[plane]));
  130.     av_log(ctx, AV_LOG_INFO, "\b]\n");
  131.  
  132.     for (i = 0; i < frame->nb_side_data; i++) {
  133.         AVFrameSideData *sd = frame->side_data[i];
  134.  
  135.         av_log(ctx, AV_LOG_INFO, "  side data - ");
  136.         switch (sd->type) {
  137.         case AV_FRAME_DATA_PANSCAN:
  138.             av_log(ctx, AV_LOG_INFO, "pan/scan");
  139.             break;
  140.         case AV_FRAME_DATA_A53_CC:
  141.             av_log(ctx, AV_LOG_INFO, "A/53 closed captions (%d bytes)", sd->size);
  142.             break;
  143.         case AV_FRAME_DATA_STEREO3D:
  144.             dump_stereo3d(ctx, sd);
  145.             break;
  146.         case AV_FRAME_DATA_DISPLAYMATRIX:
  147.             av_log(ctx, AV_LOG_INFO, "displaymatrix: rotation of %.2f degrees",
  148.                    av_display_rotation_get((int32_t *)sd->data));
  149.             break;
  150.         case AV_FRAME_DATA_AFD:
  151.             av_log(ctx, AV_LOG_INFO, "afd: value of %"PRIu8, sd->data[0]);
  152.             break;
  153.         default:
  154.             av_log(ctx, AV_LOG_WARNING, "unknown side data type %d (%d bytes)",
  155.                    sd->type, sd->size);
  156.             break;
  157.         }
  158.  
  159.         av_log(ctx, AV_LOG_INFO, "\n");
  160.     }
  161.  
  162.     return ff_filter_frame(inlink->dst->outputs[0], frame);
  163. }
  164.  
  165. static int config_props(AVFilterContext *ctx, AVFilterLink *link, int is_out)
  166. {
  167.  
  168.     av_log(ctx, AV_LOG_INFO, "config %s time_base: %d/%d, frame_rate: %d/%d\n",
  169.            is_out ? "out" :"in",
  170.            link->time_base.num, link->time_base.den,
  171.            link->frame_rate.num, link->frame_rate.den
  172.     );
  173.  
  174.     return 0;
  175. }
  176.  
  177. static int config_props_in(AVFilterLink *link)
  178. {
  179.     AVFilterContext *ctx = link->dst;
  180.     return config_props(ctx, link, 0);
  181. }
  182.  
  183. static int config_props_out(AVFilterLink *link)
  184. {
  185.     AVFilterContext *ctx = link->src;
  186.     return config_props(ctx, link, 1);
  187. }
  188.  
  189. static const AVFilterPad avfilter_vf_showinfo_inputs[] = {
  190.     {
  191.         .name         = "default",
  192.         .type         = AVMEDIA_TYPE_VIDEO,
  193.         .filter_frame = filter_frame,
  194.         .config_props  = config_props_in,
  195.     },
  196.     { NULL }
  197. };
  198.  
  199. static const AVFilterPad avfilter_vf_showinfo_outputs[] = {
  200.     {
  201.         .name = "default",
  202.         .type = AVMEDIA_TYPE_VIDEO,
  203.         .config_props  = config_props_out,
  204.     },
  205.     { NULL }
  206. };
  207.  
  208. AVFilter ff_vf_showinfo = {
  209.     .name        = "showinfo",
  210.     .description = NULL_IF_CONFIG_SMALL("Show textual information for each video frame."),
  211.     .inputs      = avfilter_vf_showinfo_inputs,
  212.     .outputs     = avfilter_vf_showinfo_outputs,
  213. };
  214.