FFmpeg: libavfilter/vf_showinfo.c Source File

FFmpeg
vf_showinfo.c
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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 };
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