[FFmpeg-cvslog] avformat/utils: Stream specifier enhancement
Bela Bodecs
git at videolan.org
Fri Apr 13 00:54:28 EEST 2018
ffmpeg | branch: master | Bela Bodecs <bodecsb at vivanet.hu> | Sun Apr 1 23:29:14 2018 +0200| [37d0213968a2b58499f52dfe09c8d7a27d4c5a86] | committer: Michael Niedermayer
avformat/utils: Stream specifier enhancement
Currently when specifying the program id you can only decide to select
all stream of the specified program (e.g. p:103 will select all streams
of program 103) or narrow the selection to a specific stream sub index
(e.g. p:145:1 will select 2nd stream of program 145.) But you can not
specify like all audio streams of program 145 or 3rd video stream of
program 311.
In some case, mainly working with multiprogram mpeg-ts containers as
input, this feature would be handy.
This patch makes it possible to narrow the stream selection among
streams of the specified program by stream type and optionally its
index. Handled types: a, v, s, d.
Examples: p:601:a will select all audio streams of program 601,
p:603:a:1 will select 2nd audio streams of program 603,
p:604:v:0 will select first video stream of program 604.
Signed-off-by: Bela Bodecs <bodecsb at vivanet.hu>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=37d0213968a2b58499f52dfe09c8d7a27d4c5a86
---
doc/fftools-common-opts.texi | 10 +++++--
libavformat/utils.c | 65 ++++++++++++++++++++++++++++++++++++++++----
2 files changed, 67 insertions(+), 8 deletions(-)
diff --git a/doc/fftools-common-opts.texi b/doc/fftools-common-opts.texi
index 7787e11cda..79feb39ca7 100644
--- a/doc/fftools-common-opts.texi
+++ b/doc/fftools-common-opts.texi
@@ -42,10 +42,14 @@ streams, 'V' only matches video streams which are not attached pictures, video
thumbnails or cover arts. If @var{stream_index} is given, then it matches
stream number @var{stream_index} of this type. Otherwise, it matches all
streams of this type.
- at item p:@var{program_id}[:@var{stream_index}]
-If @var{stream_index} is given, then it matches the stream with number @var{stream_index}
+ at item p:@var{program_id}[:@var{stream_index}] or p:@var{program_id}[:@var{stream_type}[:@var{stream_index}]]
+In first version, if @var{stream_index} is given, then it matches the stream with number @var{stream_index}
in the program with the id @var{program_id}. Otherwise, it matches all streams in the
-program.
+program. In the latter version, @var{stream_type} is one of following: 'v' for video, 'a' for audio, 's'
+for subtitle, 'd' for data. If @var{stream_index} is also given, then it matches
+stream number @var{stream_index} of this type in the program with the id @var{program_id}.
+Otherwise, if only @var{stream_type} is given, it matches all
+streams of this type in the program with the id @var{program_id}.
@item #@var{stream_id} or i:@var{stream_id}
Match the stream by stream id (e.g. PID in MPEG-TS container).
@item m:@var{key}[:@var{value}]
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 3e482a3bbc..cc35998336 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -5070,11 +5070,66 @@ FF_ENABLE_DEPRECATION_WARNINGS
if (s->programs[i]->id != prog_id)
continue;
- if (*endptr++ == ':') {
- int stream_idx = strtol(endptr, NULL, 0);
- return stream_idx >= 0 &&
- stream_idx < s->programs[i]->nb_stream_indexes &&
- st->index == s->programs[i]->stream_index[stream_idx];
+ if (*endptr++ == ':') { // p:<id>:....
+ if ( *endptr == 'a' || *endptr == 'v' ||
+ *endptr == 's' || *endptr == 'd') { // p:<id>:<st_type>[:<index>]
+ enum AVMediaType type;
+
+ switch (*endptr++) {
+ case 'v': type = AVMEDIA_TYPE_VIDEO; break;
+ case 'a': type = AVMEDIA_TYPE_AUDIO; break;
+ case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
+ case 'd': type = AVMEDIA_TYPE_DATA; break;
+ default: av_assert0(0);
+ }
+ if (*endptr++ == ':') { // p:<id>:<st_type>:<index>
+ int stream_idx = strtol(endptr, NULL, 0), type_counter = 0;
+ for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
+ int stream_index = s->programs[i]->stream_index[j];
+ if (st->index == s->programs[i]->stream_index[j]) {
+#if FF_API_LAVF_AVCTX
+FF_DISABLE_DEPRECATION_WARNINGS
+ return type_counter == stream_idx &&
+ (type == st->codecpar->codec_type ||
+ type == st->codec->codec_type);
+FF_ENABLE_DEPRECATION_WARNINGS
+#else
+ return type_counter == stream_idx &&
+ type == st->codecpar->codec_type;
+#endif
+ }
+#if FF_API_LAVF_AVCTX
+FF_DISABLE_DEPRECATION_WARNINGS
+ if (type == s->streams[stream_index]->codecpar->codec_type ||
+ type == s->streams[stream_index]->codec->codec_type)
+ type_counter++;
+FF_ENABLE_DEPRECATION_WARNINGS
+#else
+ if (type == s->streams[stream_index]->codecpar->codec_type)
+ type_counter++;
+#endif
+ }
+ return 0;
+ } else { // p:<id>:<st_type>
+ for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
+ if (st->index == s->programs[i]->stream_index[j]) {
+#if FF_API_LAVF_AVCTX
+FF_DISABLE_DEPRECATION_WARNINGS
+ return type == st->codecpar->codec_type ||
+ type == st->codec->codec_type;
+FF_ENABLE_DEPRECATION_WARNINGS
+#else
+ return type == st->codecpar->codec_type;
+#endif
+ }
+ return 0;
+ }
+ } else { // p:<id>:<index>
+ int stream_idx = strtol(endptr, NULL, 0);
+ return stream_idx >= 0 &&
+ stream_idx < s->programs[i]->nb_stream_indexes &&
+ st->index == s->programs[i]->stream_index[stream_idx];
+ }
}
for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
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