On Mon, Oct 4, 2021 at 12:25 AM Jan Ekström <jee...@gmail.com> wrote: > > On Sat, Oct 2, 2021 at 2:51 PM Michael Niedermayer > <mich...@niedermayer.cc> wrote: > > > > On Sat, Oct 02, 2021 at 02:42:52PM +0300, Jan Ekström wrote: > > > On Sat, Oct 2, 2021 at 1:32 PM Michael Niedermayer > > > <mich...@niedermayer.cc> wrote: > > > > > > > > On Sun, Sep 26, 2021 at 06:48:18PM +0300, Jan Ekström wrote: > > > > > Such a field can be seen as generally useful in cases where the > > > > > API user is not implementing custom AVIO callbacks, but still would > > > > > like to know if data is being read even if AVPackets are not being > > > > > returned. > > > > > --- > > > > > Originally I thought about making an accessor for the private field, > > > > > to > > > > > not grow the public struct's size (and have a duplicate field, as well > > > > > as making sure the value was read-only). But an objection was raised > > > > > that such accessors should be refrained from as they unnecessarily > > > > > filled the function symbol space or so. Together with the objection, a > > > > > proposal of making it a field on the public struct that was only > > > > > written > > > > > to was proposed. > > > > > > > > > > This patch follows that proposal. > > > > > > > > > > doc/APIchanges | 3 +++ > > > > > libavformat/avio.h | 5 +++++ > > > > > libavformat/aviobuf.c | 2 ++ > > > > > libavformat/version.h | 2 +- > > > > > 4 files changed, 11 insertions(+), 1 deletion(-) > > > > > > > > There are 3 statistics, read, write and seek > > > > shouldnt all 3 be provided to the user? > > > > > > > > thx > > > > > > > > > > I added one which I have seen actually utilized by at least one API > > > client, and then others could be added as per responses. > > > > > > That is why I pinged, as I had not received any responses - either > > > positive or negative. > > > > > > > > Writing I can see a use for, seek I am not as sure of. But if you > > > believe all of them should be exposed I am fine with that. > > > > seek is timeconsuming especially if its over a network due to > > latency. > > So for example if suddenly the number of seeks changes that > > could be interresting. > > > > thx > > I would prefer to add fields which were noted as specifically private > and then cleaned up when there are actual API client users that would > see them as useful, or if there are clear use cases where they'd be > useful. I have seen the read bytes statistic actually being utilized > by an API client with a comment: > > // This is fully intentional - there is no other way to get this > // information (not even by custom I/O, because the connection reuse > // mechanism by the HLS demuxer would get disabled) > > (note: not sure if that any more holds true) > > Also I double-checked and the write statistic was in counts, not > bytes. So that I see as generally less useful than something like > "bytes_written" if such were to exist.
Also just checked, and AVIOContext::written seems to be this "bytes_written" already :) Just completely undocumented. Jan _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
