Series 40 6th Edition shoot multiple pictures with SnapshotControl

[mbode]

Hi everybody,

I have the new Nokia 7510 Supernova, which supports the Camera- and the SnapshotControl of the Adanvance Multimedia API (JSR-234) and now I want take mutiple pictures with the burst mode of the SnapshotControl. All other functions of the API working correct, but when i call the method this.snapshotControl.start(int shots), i get an NumberFormatException after i confirm with yes to allow taking snapshots.

Code:

...
this.snapshotControl.setFilePrefix("J2ME");
this.snapshotControl.setFileSuffix(".jpg");
...
this.player.start();

this.snapshotControl.start(5); //throws the Exception and then the application crashes


In the predefgallery/photos i can find one Image but not with the Prefix and Suffix J2MEXXXX.jpg (i!temp!0000....jpg and so on)
But this is only for one picture not for five.

My Application with the burst mode working will on Sony Erricsson Devices.

Thank for help,

Sincerly Moritz

[alexander.semikin]

Hi! I have the same problem on Nokia 3720. It seems, that snapshot control simply ignored! As for Nokia, for example on 6303ci all it's working properly. Who know anybody, maybe Nokia has bugtracker system? Maybe it's their problem?

[hnipak]

I believe it is a bug in Nokia implementation. N6303c , and also SDK behaves similarly. Temporary file is something like "!tmp!00000037000-7223.jpg". The problem is the '-' which is a result of improper casting long to int, then formatting it as string and then parsing back to long later:

* temp filename generation:

int salt = ((int)System.currentTimeMillis() % 10000);
Long id = new Long(nbrGeneration * 10000 + salt); // nbrGeneration is: private int nbrGeneration = 0;
String playerIdPart = formatNumber(37, 8); // 37 is player id from real device tests
String idPart = formatNumber((int)id.longValue(), 8);
String newFileName = "!tmp!" + playerIdPart + idPart + ".jpg";

Depending on the time, salt can be negative! And later they try to parse part of the filename (from position 13 up to '.', .ie "000-7223" in the sample) as long:

String idStr = encodedFilename.substring(13, encodedFilename.lastIndexOf(46));
Long key = new Long(Long.parseLong(idStr));

Here we get NumberFormatException. And we are doomed.