Re: [SyncEvolution] sqlite backend enhancement

Hi Lukas, I ve got 2759 which is correct in the first and second call which is the right size of the thumbnail. The problem is that when I write the buffer to a file I only get 4 bytes (size of the buffer). The file is dumped in PHOTO field in incoming item. Is there a mistake in the manner I use the extracted buffer? because I try to put the buffer on a file by character.

2011/9/26 Lukas Zeller <luz(a)plan44.ch&gt; Hello Roger, the code looks fine, exactly the way I am doing it to get the PHOTO data in my own plugin I have for iOS address book. So there's something else that must be wrong. You say you get 2759 as size. Is this valsize in the first call? And then in the second call you get only 4 bytes back? What does valsize return for the second call? Also 4 or 2759? Do you have a logfile where you see the incoming item dumped? If so, what does it show for the PHOTO field? Best Regards, Lukas On Sep 26, 2011, at 11:32 , Roger KeIrad wrote: > Hi Lukas > Thanks for the response. I followed your tips but It didn't work here is my code : > > TSyError res = this->ui.GetValueByID(this, > aItemKey, > valueId, > idx, > sysync::VALTYPE_BUF, > NULL, > 0, > &valsize > ); > if(!res && valsize){ > data = SharedBuffer(new char[valsize*1024*1024 + 1], valsize); > data[valsize] = 0; > res = this->ui.GetValueByID(this, > aItemKey, > valueId, > idx, > sysync::VALTYPE_BUF, > data.get(), > valsize + 1, > &valsize > ); > } > > I ve got size = 2759 but i always extract 4 bytes. > Can you help me please? > Thank you in advance > Regards > > 2011/9/22 Lukas Zeller <luz(a)plan44.ch&gt; > Hello Roger, > > On Sep 22, 2011, at 16:25 , Roger KeIrad wrote: > > > Hello, > > It is me again. > > I have some troubles with PHOTO for synchronised contact. > > I used the same idea to extract encoded value to decode it. > > I tried with GetValue and GetValueByID but no chance. > > Both should work (the PHOTO is not an array field). > > Just pass VALTYPE_BUF as type, and provide a buffer large enough to get the binary photo data. > > To find out in advance how large the buffer needs to be, just call GetValue once with a NULL pointer as buffer or zero buffer size. This will return the needed size in the aValSize parameter, which you can use to allocate a buffer large enough to get the entire PHOTO. > > If you pass a buffer that is too small for the entire PHOTO data, you'll get LOCERR_TRUNCATED status. > > The data you get is binary data, usually a JPG. If you save the data 1:1 into a file, any image viewer program should be able to show it. > > Best Regards, > > Lukas