[FFmpeg-devel] [PATCH] libavformat/avformat: Check codec whitelist

* [FFmpeg-devel] [PATCH] libavformat/avformat: Check codec whitelist
@ 2022-05-17 22:08 Eric Juteau
  2022-05-26 20:55 ` Eric Juteau
  0 siblings, 1 reply; 2+ messages in thread
From: Eric Juteau @ 2022-05-17 22:08 UTC (permalink / raw)
  To: ffmpeg-devel

Modified the function av_find_best_stream() such that, when a list of allowed codecs is supplied in the format context, and when the caller is requesting a decoder be returned, the function will select the best stream that has a decoder in the allowed decoders list.

Signed-off-by: Eric Juteau <ericjut@outlook.com>
---
 libavformat/avformat.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/avformat.c b/libavformat/avformat.c
index 30d6ea6a49..396c1affa1 100644
--- a/libavformat/avformat.c
+++ b/libavformat/avformat.c
@@ -376,7 +376,8 @@ int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
             continue;
         if (decoder_ret) {
             decoder = ff_find_decoder(ic, st, par->codec_id);
-            if (!decoder) {
+            if ((!decoder) ||
+                (ic->codec_whitelist && av_match_list(decoder->name, ic->codec_whitelist, ',') <= 0)) {
                 if (ret < 0)
                     ret = AVERROR_DECODER_NOT_FOUND;
                 continue;
-- 
2.17.1

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