2 * Copyright (c) 2011 Stefano Sabatini
3 * This file is part of FFmpeg.
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.
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.
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
22 * filter for showing textual video frame information
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"
39 static void dump_stereo3d(AVFilterContext *ctx, AVFrameSideData *sd)
43 av_log(ctx, AV_LOG_INFO, "stereoscopic information: ");
44 if (sd->size < sizeof(*stereo)) {
45 av_log(ctx, AV_LOG_INFO, "invalid data");
49 stereo = (AVStereo3D *)sd->data;
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;
65 if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
66 av_log(ctx, AV_LOG_INFO, " (inverted)");
69 static void update_sample_stats(const uint8_t *src, int len, int64_t *sum, int64_t *sum2)
73 for (i = 0; i < len; i++) {
75 *sum2 += src[i] * src[i];
79 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
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;
88 for (plane = 0; plane < 4 && frame->data[plane] && frame->linesize[plane]; plane++) {
89 int64_t linesize = av_image_get_linesize(frame->format, frame->width, plane);
90 uint8_t *data = frame->data[plane];
91 int h = plane == 1 || plane == 2 ? FF_CEIL_RSHIFT(inlink->h, vsub) : inlink->h;
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);
100 update_sample_stats(data, linesize, sum+plane, sum2+plane);
101 pixelcount[plane] += linesize;
102 data += frame->linesize[plane];
106 av_log(ctx, AV_LOG_INFO,
107 "n:%"PRId64" pts:%s pts_time:%s pos:%"PRId64" "
108 "fmt:%s sar:%d/%d s:%dx%d i:%c iskey:%d type:%c "
109 "checksum:%08"PRIX32" plane_checksum:[%08"PRIX32,
111 av_ts2str(frame->pts), av_ts2timestr(frame->pts, &inlink->time_base), av_frame_get_pkt_pos(frame),
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 */
118 av_get_picture_type_char(frame->pict_type),
119 checksum, plane_checksum[0]);
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");
132 for (i = 0; i < frame->nb_side_data; i++) {
133 AVFrameSideData *sd = frame->side_data[i];
135 av_log(ctx, AV_LOG_INFO, " side data - ");
137 case AV_FRAME_DATA_PANSCAN:
138 av_log(ctx, AV_LOG_INFO, "pan/scan");
140 case AV_FRAME_DATA_A53_CC:
141 av_log(ctx, AV_LOG_INFO, "A/53 closed captions (%d bytes)", sd->size);
143 case AV_FRAME_DATA_STEREO3D:
144 dump_stereo3d(ctx, sd);
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));
151 av_log(ctx, AV_LOG_WARNING, "unknown side data type %d (%d bytes)",
156 av_log(ctx, AV_LOG_INFO, "\n");
159 return ff_filter_frame(inlink->dst->outputs[0], frame);
162 static const AVFilterPad avfilter_vf_showinfo_inputs[] = {
165 .type = AVMEDIA_TYPE_VIDEO,
166 .filter_frame = filter_frame,
171 static const AVFilterPad avfilter_vf_showinfo_outputs[] = {
174 .type = AVMEDIA_TYPE_VIDEO
179 AVFilter ff_vf_showinfo = {
181 .description = NULL_IF_CONFIG_SMALL("Show textual information for each video frame."),
182 .inputs = avfilter_vf_showinfo_inputs,
183 .outputs = avfilter_vf_showinfo_outputs,