On 26 Nov 2014 08:24:07, Thomas Weber wrote:
> Indeed the Facetime camera had no format info. I tracked down the problem and found that Mac Os returns the I420 format under certain circumstances.
> A simple fix is to add I420 to the list of formats in qt_dev.m:
>
> static qt_fmt_info qt_fmts[] =
> {
> {PJMEDIA_FORMAT_YUY2, kCVPixelFormatType_422YpCbCr8_yuvs},
> {PJMEDIA_FORMAT_UYVY, kCVPixelFormatType_422YpCbCr8},
> {PJMEDIA_FORMAT_I420, kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange}
> };
>
> I run, however, a few more tests the other day and found a way to reproduce the problem:
> [...]
The attached diagnostics diff helped me once to debug practically the
same issue -- in order to figure out supported pixelformat of an unknown
camera and then how to extend the above table.
Eeri Kask
-------------- next part --------------
--- ./pjmedia/src/pjmedia-videodev/qt_dev.m.orig 2014-01-29 11:40:40.000000000 +0100
+++ ./pjmedia/src/pjmedia-videodev/qt_dev.m 2014-06-16 20:47:05.000000000 +0200
@@ -276,6 +281,8 @@
break;
}
}
+ if (l == PJ_ARRAY_SIZE(qt_fmts))
+ PJ_LOG(4, (THIS_FILE, " skipping %s kCVPixelFormatType 0x%08x", qdi->info.name, [desc formatType]));
}
PJ_LOG(4, (THIS_FILE, " dev_id %d: %s", i, qdi->info.name));
