add seek command
add get_duration command
patch attached
thanks
From 6291c06dacbe2aa48a97bf36835ec8a3bce8a40a Mon Sep 17 00:00:00 2001
From: Muhammad Faiz <mfc...@gmail.com>
Date: Wed, 17 Feb 2016 21:21:12 +0700
Subject: [PATCH] avfilter/src_movie: add various commands
add seek command
add get_duration command
---
doc/filters.texi | 24 ++++++++++++++++++++++++
libavfilter/src_movie.c | 37 +++++++++++++++++++++++++++++++++++++
2 files changed, 61 insertions(+)
diff --git a/doc/filters.texi b/doc/filters.texi
index 68f54f1..a9eecf1 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -15897,4 +15897,28 @@ movie=dvd.vob:s=v:0+#0x81 [video] [audio]
@end example
@end itemize
+@subsection Commands
+
+Both movie and amovie support the following commands:
+@table @option
+@item seek
+Perform seek using "av_seek_frame".
+The syntax is: seek @var{stream_index}|@var{timestamp}|@var{flags}
+@itemize
+@item
+@var{stream_index}: If stream_index is -1, a default
+stream is selected, and @var{timestamp} is automatically converted
+from AV_TIME_BASE units to the stream specific time_base.
+@item
+@var{timestamp}: Timestamp in AVStream.time_base units
+or, if no stream is specified, in AV_TIME_BASE units.
+@item
+@var{flags}: Flags which select direction and seeking mode.
+@end itemize
+
+@item get_duration
+Get movie duration in AV_TIME_BASE units.
+
+@end table
+
@c man end MULTIMEDIA SOURCES
diff --git a/libavfilter/src_movie.c b/libavfilter/src_movie.c
index 82d2bcd..cc75e5f 100644
--- a/libavfilter/src_movie.c
+++ b/libavfilter/src_movie.c
@@ -573,6 +573,41 @@ static int movie_request_frame(AVFilterLink *outlink)
}
}
+static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
+ char *res, int res_len, int flags)
+{
+ MovieContext *movie = ctx->priv;
+ int ret = AVERROR(ENOSYS);
+
+ if (!strcmp(cmd, "seek")) {
+ int idx, flags;
+ int64_t ts;
+ char tail[2];
+
+ if (sscanf(args, "%i|%"SCNi64"|%i %1s", &idx, &ts, &flags, tail) != 3)
+ return AVERROR(EINVAL);
+
+ return av_seek_frame(movie->format_ctx, idx, ts, flags);
+ } else if (!strcmp(cmd, "get_duration")) {
+ int print_len;
+ char tail[2];
+
+ if (!res || res_len <= 0)
+ return AVERROR(EINVAL);
+
+ if (args && sscanf(args, "%1s", tail) == 1)
+ return AVERROR(EINVAL);
+
+ print_len = snprintf(res, res_len, "%"PRId64, movie->format_ctx->duration);
+ if (print_len < 0 || print_len >= res_len)
+ return AVERROR(EINVAL);
+
+ return 0;
+ }
+
+ return ret;
+}
+
#if CONFIG_MOVIE_FILTER
AVFILTER_DEFINE_CLASS(movie);
@@ -589,6 +624,7 @@ AVFilter ff_avsrc_movie = {
.inputs = NULL,
.outputs = NULL,
.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
+ .process_command = process_command
};
#endif /* CONFIG_MOVIE_FILTER */
@@ -610,6 +646,7 @@ AVFilter ff_avsrc_amovie = {
.outputs = NULL,
.priv_class = &amovie_class,
.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
+ .process_command = process_command,
};
#endif /* CONFIG_AMOVIE_FILTER */
--
2.5.0
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