[FFmpeg-devel] [PATCH 1/2] avfilter/src_movie: add dec_opts for the opened file

[lance.lmwang at gmail.com]

From: Limin Wang <lance.lmwang at gmail.com>

Signed-off-by: Limin Wang <lance.lmwang at gmail.com>
---
 doc/filters.texi        | 9 +++++++++
 libavfilter/src_movie.c | 5 ++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/doc/filters.texi b/doc/filters.texi
index 367614d2f8..6775cf43ba 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -29652,6 +29652,15 @@ shows how to add protocol_whitelist and protocol_blacklist options:
 ffplay -f lavfi
 "movie=filename='1.sdp':format_opts='protocol_whitelist=file,rtp,udp\:protocol_blacklist=http'"
 @end example
+
+ at item dec_opts
+Specify decode options for the opened file. Format options can be specified
+as a list of @var{key}=@var{value} pairs separated by ':'. The following example
+shows how to add export_side_data options:
+ at example
+./ffmpeg -y  -f lavfi
+-i "movie=./input.ts:dec_opts=export_side_data=scte20cc[out0+subcc]" out.srt
+ at end example
 @end table
 
 It allows overlaying a second video on top of the main input of
diff --git a/libavfilter/src_movie.c b/libavfilter/src_movie.c
index 711854c23c..c7dbd90aa9 100644
--- a/libavfilter/src_movie.c
+++ b/libavfilter/src_movie.c
@@ -70,6 +70,7 @@ typedef struct MovieContext {
     int64_t discontinuity_threshold;
     int64_t ts_offset;
     int dec_threads;
+    AVDictionary *dec_opts;
 
     AVFormatContext *format_ctx;
 
@@ -96,6 +97,7 @@ static const AVOption movie_options[]= {
     { "discontinuity", "set discontinuity threshold", OFFSET(discontinuity_threshold), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX, FLAGS },
     { "dec_threads",  "set the number of threads for decoding", OFFSET(dec_threads), AV_OPT_TYPE_INT, {.i64 =  0}, 0, INT_MAX, FLAGS },
     { "format_opts",  "set format options for the opened file", OFFSET(format_opts), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, FLAGS},
+    { "dec_opts",     "set decode options for the opened file", OFFSET(dec_opts),    AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, FLAGS},
     { NULL },
 };
 
@@ -158,6 +160,7 @@ static AVStream *find_stream(void *log, AVFormatContext *avf, const char *spec)
 
 static int open_stream(AVFilterContext *ctx, MovieStream *st, int dec_threads)
 {
+    MovieContext *movie = ctx->priv;
     const AVCodec *codec;
     int ret;
 
@@ -179,7 +182,7 @@ static int open_stream(AVFilterContext *ctx, MovieStream *st, int dec_threads)
         dec_threads = ff_filter_get_nb_threads(ctx);
     st->codec_ctx->thread_count = dec_threads;
 
-    if ((ret = avcodec_open2(st->codec_ctx, codec, NULL)) < 0) {
+    if ((ret = avcodec_open2(st->codec_ctx, codec, &movie->dec_opts)) < 0) {
         av_log(ctx, AV_LOG_ERROR, "Failed to open codec\n");
         return ret;
     }
-- 
2.35.1