Andrey Semashev (2018-12-10): > This commit adds a new set of functions to avio and url subsystems, which > allow users to invoke IO buffer synchronization with the underlying media. > The most obvious target for this extension if the filesystem streams. Invoking > IO synchronization allows user applications to ensure that all written content > has reached the filesystem on the media and can be observed by other > processes. > > The public API for this is avio_sync() function, which can be called on > AVIOContext. The internal, lower layer API is ffurl_sync(), which works > directly on the underlying URLContext. URLContext backends can add support for > this new API by setting the sync handler to the new url_sync member of > URLProtocol. When no handler is set then the sync operation is a no-op, > the result code is AVERROR(ENOSYS). > --- > libavformat/avio.c | 7 +++++++ > libavformat/avio.h | 20 ++++++++++++++++++++ > libavformat/aviobuf.c | 17 +++++++++++++++++ > libavformat/url.h | 12 ++++++++++++ > 4 files changed, 56 insertions(+)
I have no more objections to the patch as it is, thanks. But I have no opinion in favor of it either; it is useful in principle, but I do not know if it is worth the extra maintenance for a use case like this project. I will leave the judgement to others. Regards, -- Nicolas George
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