![\"\"](\"https:\/\/eskerahn.dk\/wp-content\/uploads\/2017\/02\/connect-android-phone-to-pc.jpg\")
<\/a><\/p>\nUnder some circumstances it reports a VERY wrong file size, but if you by WPD open a stream and copy the file until it sends no more bytes, it returns the correct full content.<\/p>\n
<\/p>\n
I had inadvertently triggered the bug by manually moving the DCIM folder to a SD card, and then regretted and moved it back, both with “Astro” on a BB Priv on 6.0.1.<\/p>\n
After this about half the files in the Camera<\/em> sub-dir no longer reported the correct size. e.g a 7MB file might report as 1.5MB. There were no clear logic to the error. Not any obvious factor or any difference or bit-pattern that indicated what had happened. It wasn’t neither especially new or old ones, or any clear pattern. Just about 60% of the files. (And only files older than when I moved the folder a few weeks ago)<\/p>\n I tried on a different pc, to attempt to see if it was a Windows bug, and also reset the phablet. No difference, and same incorrect numbers.<\/p>\n I modified the PortableDevicesIncrementalCopy <\/a>to handle this situation, but then realised that it was in the folder I recently messed with only. I then got he idea that with a little luck moving the images to a different folder and back on the internal memory fixed it<\/strong>, and it did!<\/p>\n Googling for this, it seems to be a known quite old bug, at least back to 2012<\/a> and 2013<\/a>,\u00a0 but it is a rather elusive one, that has been hard to provoke\/reproduce and thus fix….<\/p>\n Of course since reading to the end of the streams works, I tried to see if I was allowed to seek in the stream. But this is not allowed, not even seek to the beginning. I do not know if the limitation is in WPD, Android or my specific phablet.<\/p>\n Here a part of the code (from the above linked) that returns the incorrect results<\/p>\n (Both the Int32 and Int64 call returns the same incorrect sizes)<\/p>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ Get the size of the object<\/code>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/int objSiz;<\/code>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 long objSiz;<\/code>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 property = new _tagpropertykey();<\/code>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 property.fmtid = WPD_OBJECT_;<\/code>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 property.pid = 11;\/\/WPD_OBJECT_SIZE;<\/code>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/values.GetSignedIntegerValue(property, out objSiz);<\/code>
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 values.GetSignedLargeIntegerValue(property, out objSiz);<\/code><\/p>\n