FFmpeg: Add QT_FFMPEG_PROTOCOL_WHITELIST environment variable

FFmpeg AV format context has a protocol whitelist option, which is populated on avformat_open_input() call. This usually ends up correct, but for example when opening an .sdp file for playing an rtp stream, the whitelist doesn't include "rtp" and "udp". This patch adds a check for the QT_FFMPEG_PROTOCOL_WHITELIST environment variable, which the user can set to override the whitelist with their own. Fixes: QTBUG-125006 Pick-to: 6.7 6.5 Change-Id: I7ddb53f879af909fb8b38c639c571822542d6638 Reviewed-by: Jøger Hansegård <[email protected]> Reviewed-by: Artem Dyomin <[email protected]>
friction2d · May 14, 2024 · 2b4c9cf · 2b4c9cf
1 parent 0dafe69
commit 2b4c9cf
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/plugins/multimedia/ffmpeg/playbackengine/qffmpegmediadataholder.cpp b/src/plugins/multimedia/ffmpeg/playbackengine/qffmpegmediadataholder.cpp
@@ -171,6 +171,10 @@ loadMedia(const QUrl &mediaUrl, QIODevice *stream, const std::shared_ptr<ICancel
     constexpr auto NetworkTimeoutUs = "5000000";
     av_dict_set(dict, "timeout", NetworkTimeoutUs, 0);
 
+    const QByteArray protocolWhitelist = qgetenv("QT_FFMPEG_PROTOCOL_WHITELIST");
+    if (!protocolWhitelist.isNull())
+        av_dict_set(dict, "protocol_whitelist", protocolWhitelist.data(), 0);
+
     context->interrupt_callback.opaque = cancelToken.get();
     context->interrupt_callback.callback = [](void *opaque) {
         const auto *cancelToken = static_cast<const ICancelToken *>(opaque);