libavfilter/vf_showinfo.c

   1 /*
   2  * Copyright (c) 2011 Stefano Sabatini
   3  * This file is part of Libav.
   4  *
   5  * Libav 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  * Libav 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 Libav; 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
  34 #include "avfilter.h"
  35 #include "internal.h"
  36 #include "video.h"
  37
  38 typedef struct ShowInfoContext {
  39     unsigned int frame;
  40 } ShowInfoContext;
  41
  42 static void dump_stereo3d(AVFilterContext *ctx, AVFrameSideData *sd)
  43 {
  44     AVStereo3D *stereo;
  45
  46     av_log(ctx, AV_LOG_INFO, "stereoscopic information: ");
  47     if (sd->size < sizeof(*stereo)) {
  48         av_log(ctx, AV_LOG_INFO, "invalid data");
  49         return;
  50     }
  51
  52     stereo = (AVStereo3D *)sd->data;
  53
  54     av_log(ctx, AV_LOG_INFO, "type - ");
  55     switch (stereo->type) {
  56     case AV_STEREO3D_2D:                  av_log(ctx, AV_LOG_INFO, "2D");                     break;
  57     case AV_STEREO3D_SIDEBYSIDE:          av_log(ctx, AV_LOG_INFO, "side by side");           break;
  58     case AV_STEREO3D_TOPBOTTOM:           av_log(ctx, AV_LOG_INFO, "top and bottom");         break;
  59     case AV_STEREO3D_FRAMESEQUENCE:       av_log(ctx, AV_LOG_INFO, "frame alternate");        break;
  60     case AV_STEREO3D_CHECKERBOARD:        av_log(ctx, AV_LOG_INFO, "checkerboard");           break;
  61     case AV_STEREO3D_LINES:               av_log(ctx, AV_LOG_INFO, "interleaved lines");      break;
  62     case AV_STEREO3D_COLUMNS:             av_log(ctx, AV_LOG_INFO, "interleaved columns");    break;
  63     case AV_STEREO3D_SIDEBYSIDE_QUINCUNX: av_log(ctx, AV_LOG_INFO, "side by side "
  64                                                                    "(quincunx subsampling)"); break;
  65     default:                              av_log(ctx, AV_LOG_WARNING, "unknown");             break;
  66     }
  67
  68     if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
  69         av_log(ctx, AV_LOG_INFO, " (inverted)");
  70 }
  71
  72 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
  73 {
  74     AVFilterContext *ctx = inlink->dst;
  75     ShowInfoContext *showinfo = ctx->priv;
  76     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
  77     uint32_t plane_checksum[4] = {0}, checksum = 0;
  78     int i, plane, vsub = desc->log2_chroma_h;
  79
  80     for (plane = 0; frame->data[plane] && plane < 4; plane++) {
  81         uint8_t *data = frame->data[plane];
  82         int h = plane == 1 || plane == 2 ? inlink->h >> vsub : inlink->h;
  83         int linesize = av_image_get_linesize(frame->format, frame->width, plane);
  84         if (linesize < 0)
  85             return linesize;
  86
  87         for (i = 0; i < h; i++) {
  88             plane_checksum[plane] = av_adler32_update(plane_checksum[plane], data, linesize);
  89             checksum = av_adler32_update(checksum, data, linesize);
  90             data += frame->linesize[plane];
  91         }
  92     }
  93
  94     av_log(ctx, AV_LOG_INFO,
  95            "n:%d pts:%"PRId64" pts_time:%f "
  96            "fmt:%s sar:%d/%d s:%dx%d i:%c iskey:%d type:%c "
  97            "checksum:%"PRIu32" plane_checksum:[%"PRIu32" %"PRIu32" %"PRIu32" %"PRIu32"]\n",
  98            showinfo->frame,
  99            frame->pts, frame->pts * av_q2d(inlink->time_base),
 100            desc->name,
 101            frame->sample_aspect_ratio.num, frame->sample_aspect_ratio.den,
 102            frame->width, frame->height,
 103            !frame->interlaced_frame ? 'P' :         /* Progressive  */
 104            frame->top_field_first   ? 'T' : 'B',    /* Top / Bottom */
 105            frame->key_frame,
 106            av_get_picture_type_char(frame->pict_type),
 107            checksum, plane_checksum[0], plane_checksum[1], plane_checksum[2], plane_checksum[3]);
 108
 109     for (i = 0; i < frame->nb_side_data; i++) {
 110         AVFrameSideData *sd = frame->side_data[i];
 111
 112         av_log(ctx, AV_LOG_INFO, "  side data - ");
 113         switch (sd->type) {
 114         case AV_FRAME_DATA_PANSCAN:
 115             av_log(ctx, AV_LOG_INFO, "pan/scan");
 116             break;
 117         case AV_FRAME_DATA_A53_CC:
 118             av_log(ctx, AV_LOG_INFO, "A/53 closed captions (%d bytes)", sd->size);
 119             break;
 120         case AV_FRAME_DATA_STEREO3D:
 121             dump_stereo3d(ctx, sd);
 122             break;
 123         case AV_FRAME_DATA_DISPLAYMATRIX:
 124             av_log(ctx, AV_LOG_INFO, "displaymatrix: rotation of %.2f degrees",
 125                    av_display_rotation_get((int32_t *)sd->data));
 126             break;
 127         case AV_FRAME_DATA_AFD:
 128             av_log(ctx, AV_LOG_INFO, "afd: value of %"PRIu8, sd->data[0]);
 129             break;
 130         default:
 131             av_log(ctx, AV_LOG_WARNING, "unknown side data type %d (%d bytes)",
 132                    sd->type, sd->size);
 133             break;
 134         }
 135
 136         av_log(ctx, AV_LOG_INFO, "\n");
 137     }
 138
 139     showinfo->frame++;
 140     return ff_filter_frame(inlink->dst->outputs[0], frame);
 141 }
 142
 143 static int config_props(AVFilterContext *ctx, AVFilterLink *link, int is_out)
 144 {
 145
 146     av_log(ctx, AV_LOG_INFO, "config %s time_base: %d/%d, frame_rate: %d/%d\n",
 147            is_out ? "out" : "in",
 148            link->time_base.num, link->time_base.den,
 149            link->frame_rate.num, link->frame_rate.den);
 150
 151     return 0;
 152 }
 153
 154 static int config_props_in(AVFilterLink *link)
 155 {
 156     AVFilterContext *ctx = link->dst;
 157     return config_props(ctx, link, 0);
 158 }
 159
 160 static int config_props_out(AVFilterLink *link)
 161 {
 162     AVFilterContext *ctx = link->src;
 163     return config_props(ctx, link, 1);
 164 }
 165
 166 static const AVFilterPad avfilter_vf_showinfo_inputs[] = {
 167     {
 168         .name             = "default",
 169         .type             = AVMEDIA_TYPE_VIDEO,
 170         .get_video_buffer = ff_null_get_video_buffer,
 171         .filter_frame     = filter_frame,
 172         .config_props     = config_props_in,
 173     },
 174     { NULL }
 175 };
 176
 177 static const AVFilterPad avfilter_vf_showinfo_outputs[] = {
 178     {
 179         .name = "default",
 180         .type = AVMEDIA_TYPE_VIDEO,
 181         .config_props  = config_props_out,
 182     },
 183     { NULL }
 184 };
 185
 186 AVFilter ff_vf_showinfo = {
 187     .name        = "showinfo",
 188     .description = NULL_IF_CONFIG_SMALL("Show textual information for each video frame."),
 189
 190     .priv_size = sizeof(ShowInfoContext),
 191
 192     .inputs    = avfilter_vf_showinfo_inputs,
 193
 194     .outputs   = avfilter_vf_showinfo_outputs,
 195 };