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af_ashowinfo.c
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1 /*
2  * Copyright (c) 2011 Stefano Sabatini
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @file
23  * filter for showing textual audio frame information
24  */
25 
26 #include <inttypes.h>
27 #include <stddef.h>
28 
29 #include "libavutil/adler32.h"
30 #include "libavutil/attributes.h"
32 #include "libavutil/common.h"
33 #include "libavutil/downmix_info.h"
34 #include "libavutil/intreadwrite.h"
35 #include "libavutil/mem.h"
36 #include "libavutil/replaygain.h"
37 #include "libavutil/timestamp.h"
38 #include "libavutil/samplefmt.h"
39 
40 #include "audio.h"
41 #include "avfilter.h"
42 #include "internal.h"
43 
44 typedef struct AShowInfoContext {
45  /**
46  * Scratch space for individual plane checksums for planar audio
47  */
48  uint32_t *plane_checksums;
50 
51 static av_cold void uninit(AVFilterContext *ctx)
52 {
53  AShowInfoContext *s = ctx->priv;
55 }
56 
58 {
59  enum AVMatrixEncoding enc;
60 
61  av_log(ctx, AV_LOG_INFO, "matrix encoding: ");
62 
63  if (sd->size < sizeof(enum AVMatrixEncoding)) {
64  av_log(ctx, AV_LOG_INFO, "invalid data");
65  return;
66  }
67 
68  enc = *(enum AVMatrixEncoding *)sd->data;
69  switch (enc) {
70  case AV_MATRIX_ENCODING_NONE: av_log(ctx, AV_LOG_INFO, "none"); break;
71  case AV_MATRIX_ENCODING_DOLBY: av_log(ctx, AV_LOG_INFO, "Dolby Surround"); break;
72  case AV_MATRIX_ENCODING_DPLII: av_log(ctx, AV_LOG_INFO, "Dolby Pro Logic II"); break;
73  case AV_MATRIX_ENCODING_DPLIIX: av_log(ctx, AV_LOG_INFO, "Dolby Pro Logic IIx"); break;
74  case AV_MATRIX_ENCODING_DPLIIZ: av_log(ctx, AV_LOG_INFO, "Dolby Pro Logic IIz"); break;
75  case AV_MATRIX_ENCODING_DOLBYEX: av_log(ctx, AV_LOG_INFO, "Dolby EX"); break;
76  case AV_MATRIX_ENCODING_DOLBYHEADPHONE: av_log(ctx, AV_LOG_INFO, "Dolby Headphone"); break;
77  default: av_log(ctx, AV_LOG_WARNING, "unknown"); break;
78  }
79 }
80 
82 {
83  AVDownmixInfo *di;
84 
85  av_log(ctx, AV_LOG_INFO, "downmix: ");
86  if (sd->size < sizeof(*di)) {
87  av_log(ctx, AV_LOG_INFO, "invalid data");
88  return;
89  }
90 
91  di = (AVDownmixInfo *)sd->data;
92 
93  av_log(ctx, AV_LOG_INFO, "preferred downmix type - ");
94  switch (di->preferred_downmix_type) {
95  case AV_DOWNMIX_TYPE_LORO: av_log(ctx, AV_LOG_INFO, "Lo/Ro"); break;
96  case AV_DOWNMIX_TYPE_LTRT: av_log(ctx, AV_LOG_INFO, "Lt/Rt"); break;
97  case AV_DOWNMIX_TYPE_DPLII: av_log(ctx, AV_LOG_INFO, "Dolby Pro Logic II"); break;
98  default: av_log(ctx, AV_LOG_WARNING, "unknown"); break;
99  }
100 
101  av_log(ctx, AV_LOG_INFO, " Mix levels: center %f (%f ltrt) - "
102  "surround %f (%f ltrt) - lfe %f",
105  di->lfe_mix_level);
106 }
107 
108 static void print_gain(AVFilterContext *ctx, const char *str, int32_t gain)
109 {
110  av_log(ctx, AV_LOG_INFO, "%s - ", str);
111  if (gain == INT32_MIN)
112  av_log(ctx, AV_LOG_INFO, "unknown");
113  else
114  av_log(ctx, AV_LOG_INFO, "%f", gain / 100000.0f);
115  av_log(ctx, AV_LOG_INFO, ", ");
116 }
117 
118 static void print_peak(AVFilterContext *ctx, const char *str, uint32_t peak)
119 {
120  av_log(ctx, AV_LOG_INFO, "%s - ", str);
121  if (!peak)
122  av_log(ctx, AV_LOG_INFO, "unknown");
123  else
124  av_log(ctx, AV_LOG_INFO, "%f", (float)peak / UINT32_MAX);
125  av_log(ctx, AV_LOG_INFO, ", ");
126 }
127 
129 {
130  AVReplayGain *rg;
131 
132  av_log(ctx, AV_LOG_INFO, "replaygain: ");
133  if (sd->size < sizeof(*rg)) {
134  av_log(ctx, AV_LOG_INFO, "invalid data");
135  return;
136  }
137  rg = (AVReplayGain*)sd->data;
138 
139  print_gain(ctx, "track gain", rg->track_gain);
140  print_peak(ctx, "track peak", rg->track_peak);
141  print_gain(ctx, "album gain", rg->album_gain);
142  print_peak(ctx, "album peak", rg->album_peak);
143 }
144 
146 {
147  av_log(ctx, AV_LOG_INFO, "unknown side data type: %d, size %d bytes", sd->type, sd->size);
148 }
149 
150 static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
151 {
152  AVFilterContext *ctx = inlink->dst;
153  AShowInfoContext *s = ctx->priv;
154  char chlayout_str[128];
155  uint32_t checksum = 0;
156  int channels = inlink->channels;
157  int planar = av_sample_fmt_is_planar(buf->format);
158  int block_align = av_get_bytes_per_sample(buf->format) * (planar ? 1 : channels);
159  int data_size = buf->nb_samples * block_align;
160  int planes = planar ? channels : 1;
161  int i;
162  void *tmp_ptr = av_realloc(s->plane_checksums, channels * sizeof(*s->plane_checksums));
163 
164  if (!tmp_ptr)
165  return AVERROR(ENOMEM);
166  s->plane_checksums = tmp_ptr;
167 
168  for (i = 0; i < planes; i++) {
169  uint8_t *data = buf->extended_data[i];
170 
171  s->plane_checksums[i] = av_adler32_update(0, data, data_size);
172  checksum = i ? av_adler32_update(checksum, data, data_size) :
173  s->plane_checksums[0];
174  }
175 
176  av_get_channel_layout_string(chlayout_str, sizeof(chlayout_str), -1,
177  buf->channel_layout);
178 
179  av_log(ctx, AV_LOG_INFO,
180  "n:%"PRId64" pts:%s pts_time:%s pos:%"PRId64" "
181  "fmt:%s channels:%d chlayout:%s rate:%d nb_samples:%d "
182  "checksum:%08"PRIX32" ",
183  inlink->frame_count,
184  av_ts2str(buf->pts), av_ts2timestr(buf->pts, &inlink->time_base),
186  av_get_sample_fmt_name(buf->format), av_frame_get_channels(buf), chlayout_str,
187  buf->sample_rate, buf->nb_samples,
188  checksum);
189 
190  av_log(ctx, AV_LOG_INFO, "plane_checksums: [ ");
191  for (i = 0; i < planes; i++)
192  av_log(ctx, AV_LOG_INFO, "%08"PRIX32" ", s->plane_checksums[i]);
193  av_log(ctx, AV_LOG_INFO, "]\n");
194 
195  for (i = 0; i < buf->nb_side_data; i++) {
196  AVFrameSideData *sd = buf->side_data[i];
197 
198  av_log(ctx, AV_LOG_INFO, " side data - ");
199  switch (sd->type) {
200  case AV_FRAME_DATA_MATRIXENCODING: dump_matrixenc (ctx, sd); break;
201  case AV_FRAME_DATA_DOWNMIX_INFO: dump_downmix (ctx, sd); break;
202  case AV_FRAME_DATA_REPLAYGAIN: dump_replaygain(ctx, sd); break;
203  default: dump_unknown (ctx, sd); break;
204  }
205 
206  av_log(ctx, AV_LOG_INFO, "\n");
207  }
208 
209  return ff_filter_frame(inlink->dst->outputs[0], buf);
210 }
211 
212 static const AVFilterPad inputs[] = {
213  {
214  .name = "default",
215  .type = AVMEDIA_TYPE_AUDIO,
216  .filter_frame = filter_frame,
217  },
218  { NULL }
219 };
220 
221 static const AVFilterPad outputs[] = {
222  {
223  .name = "default",
224  .type = AVMEDIA_TYPE_AUDIO,
225  },
226  { NULL }
227 };
228 
230  .name = "ashowinfo",
231  .description = NULL_IF_CONFIG_SMALL("Show textual information for each audio frame."),
232  .priv_size = sizeof(AShowInfoContext),
233  .uninit = uninit,
234  .inputs = inputs,
235  .outputs = outputs,
236 };