{v,a}f_showinfo: print frame side data
[libav.git] / 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/imgutils.h"
29 #include "libavutil/internal.h"
30 #include "libavutil/pixdesc.h"
31 #include "libavutil/stereo3d.h"
32
33 #include "avfilter.h"
34 #include "internal.h"
35 #include "video.h"
36
37 typedef struct {
38 unsigned int frame;
39 } ShowInfoContext;
40
41 static void dump_stereo3d(AVFilterContext *ctx, AVFrameSideData *sd)
42 {
43 AVStereo3D *stereo;
44
45 av_log(ctx, AV_LOG_INFO, "stereoscopic information: ");
46 if (sd->size < sizeof(*stereo)) {
47 av_log(ctx, AV_LOG_INFO, "invalid data");
48 return;
49 }
50
51 stereo = (AVStereo3D *)sd->data;
52
53 av_log(ctx, AV_LOG_INFO, "type - ");
54 switch (stereo->type) {
55 case AV_STEREO3D_2D: av_log(ctx, AV_LOG_INFO, "2D"); break;
56 case AV_STEREO3D_SIDEBYSIDE: av_log(ctx, AV_LOG_INFO, "side by side"); break;
57 case AV_STEREO3D_TOPBOTTOM: av_log(ctx, AV_LOG_INFO, "top and bottom"); break;
58 case AV_STEREO3D_FRAMESEQUENCE: av_log(ctx, AV_LOG_INFO, "frame alternate"); break;
59 case AV_STEREO3D_CHECKERBOARD: av_log(ctx, AV_LOG_INFO, "checkerboard"); break;
60 case AV_STEREO3D_LINES: av_log(ctx, AV_LOG_INFO, "interleaved lines"); break;
61 case AV_STEREO3D_COLUMNS: av_log(ctx, AV_LOG_INFO, "interleaved columns"); break;
62 case AV_STEREO3D_SIDEBYSIDE_QUINCUNX: av_log(ctx, AV_LOG_INFO, "side by side "
63 "(quincunx subsampling)"); break;
64 default: av_log(ctx, AV_LOG_WARNING, "unknown"); break;
65 }
66
67 if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
68 av_log(ctx, AV_LOG_INFO, " (inverted)");
69 }
70
71 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
72 {
73 AVFilterContext *ctx = inlink->dst;
74 ShowInfoContext *showinfo = ctx->priv;
75 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
76 uint32_t plane_checksum[4] = {0}, checksum = 0;
77 int i, plane, vsub = desc->log2_chroma_h;
78
79 for (plane = 0; frame->data[plane] && plane < 4; plane++) {
80 size_t linesize = av_image_get_linesize(frame->format, frame->width, plane);
81 uint8_t *data = frame->data[plane];
82 int h = plane == 1 || plane == 2 ? inlink->h >> vsub : inlink->h;
83
84 for (i = 0; i < h; i++) {
85 plane_checksum[plane] = av_adler32_update(plane_checksum[plane], data, linesize);
86 checksum = av_adler32_update(checksum, data, linesize);
87 data += frame->linesize[plane];
88 }
89 }
90
91 av_log(ctx, AV_LOG_INFO,
92 "n:%d pts:%"PRId64" pts_time:%f "
93 "fmt:%s sar:%d/%d s:%dx%d i:%c iskey:%d type:%c "
94 "checksum:%"PRIu32" plane_checksum:[%"PRIu32" %"PRIu32" %"PRIu32" %"PRIu32"]\n",
95 showinfo->frame,
96 frame->pts, frame->pts * av_q2d(inlink->time_base),
97 desc->name,
98 frame->sample_aspect_ratio.num, frame->sample_aspect_ratio.den,
99 frame->width, frame->height,
100 !frame->interlaced_frame ? 'P' : /* Progressive */
101 frame->top_field_first ? 'T' : 'B', /* Top / Bottom */
102 frame->key_frame,
103 av_get_picture_type_char(frame->pict_type),
104 checksum, plane_checksum[0], plane_checksum[1], plane_checksum[2], plane_checksum[3]);
105
106 for (i = 0; i < frame->nb_side_data; i++) {
107 AVFrameSideData *sd = frame->side_data[i];
108
109 av_log(ctx, AV_LOG_INFO, " side data - ");
110 switch (sd->type) {
111 case AV_FRAME_DATA_PANSCAN:
112 av_log(ctx, AV_LOG_INFO, "pan/scan");
113 break;
114 case AV_FRAME_DATA_A53_CC:
115 av_log(ctx, AV_LOG_INFO, "A/53 closed captions (%d bytes)", sd->size);
116 break;
117 case AV_FRAME_DATA_STEREO3D:
118 dump_stereo3d(ctx, sd);
119 break;
120 default:
121 av_log(ctx, AV_LOG_WARNING, "unknown side data type %d (%d bytes)",
122 sd->type, sd->size);
123 break;
124 }
125
126 av_log(ctx, AV_LOG_INFO, "\n");
127 }
128
129 showinfo->frame++;
130 return ff_filter_frame(inlink->dst->outputs[0], frame);
131 }
132
133 static const AVFilterPad avfilter_vf_showinfo_inputs[] = {
134 {
135 .name = "default",
136 .type = AVMEDIA_TYPE_VIDEO,
137 .get_video_buffer = ff_null_get_video_buffer,
138 .filter_frame = filter_frame,
139 },
140 { NULL }
141 };
142
143 static const AVFilterPad avfilter_vf_showinfo_outputs[] = {
144 {
145 .name = "default",
146 .type = AVMEDIA_TYPE_VIDEO
147 },
148 { NULL }
149 };
150
151 AVFilter ff_vf_showinfo = {
152 .name = "showinfo",
153 .description = NULL_IF_CONFIG_SMALL("Show textual information for each video frame."),
154
155 .priv_size = sizeof(ShowInfoContext),
156
157 .inputs = avfilter_vf_showinfo_inputs,
158
159 .outputs = avfilter_vf_showinfo_outputs,
160 };