Hi Charles, If you could please write a bug report and attach a crash log, we'll look into it. I have successfully written a small number of markers to a CAF file...
Thanks, Doug > On Sep 16, 2016, at 1:17 , Charles Constant <[email protected]> wrote: > > Judging by the lack of mentions anywhere on the internet, I don't think many > people use AudioFileRegionLists. I have found one mention from 3 years ago, > where the developer had similar results reading, as to what I am seeing with > writing - in so far as only the first marker of the first region is reliably > accessible. > > https://devforums.apple.com/message/759692#759692 > > So I'm leaning toward a new theory, that it's not my CSStrings, but that this > feature is broken. Can anyone confirm this? > > Thanks > > Charles > > PS: I also see a layer down, this might be possible using a CAFRegionChunk. > Anyone had any luck with this? > > > > On Wed, Sep 14, 2016 at 8:53 PM, Charles Constant <[email protected]> > wrote: > > I'm having a rather bad time getting AudioFileSetProperty to write an > AudioFileRegionList to a CAF file. I suspect the problem is the way that I'm > allocating CFStrings. > > Is this an appropriate way to allocate CFStrings when setting a marker.mName > or region.mName? > > rgn->mName = CFStringCreateWithFormat( kCFAllocatorDefault, NULL, > CFSTR("Region-%d"), r ); > > > > My problem is that if I try to create a List that contains more than one > Region, as soon as I call AudioFileSetProperty, I get "EXC_BAD_ACCESS." This > happens unless I use a very small quantity of regions and markers. The > debugger shows the exact place where AudioFileSetProperty falls over as > either "CFStringGetLength" or "CAFRegion_NtoB(CAFRegion*)". > > > > If I create only a single Region, and then use afinfo to view my file, I get > this type of thing: > > MacBook-Pro:~ username$ afinfo /Users/username/UnitTest_CAF_ANSI_C.caf > File: /Users/username/UnitTest_CAF_ANSI_C.caf > File type ID: caff > Num Tracks: 1 > ---- > Data format: 1 ch, 44100 Hz, 'lpcm' (0x0000000E) 16-bit big-endian > signed integer > no channel layout. > estimated duration: 5.001315 sec > audio bytes: 441116 > audio packets: 220558 > bit rate: 705600 bits per second > packet size upper bound: 2 > maximum packet size: 2 > audio data file offset: 4096 > optimized > audio 220558 valid frames + 0 priming + 0 remainder = 220558 > source bit depth: I16 > 1 regions; SMPTE time type 0 (none) > region 1, "Region-0", flags 00000000 > marker 990, "Marker-990": frame 100 SMPTE time 0:00:00:00/0 > type 1935828327 ('sbeg') channel 0 > marker 991, "<unnnamed>": frame 200 SMPTE time 0:00:00:00/0 > type 1936027236 ('send') channel 0 > marker 992, "<unnnamed>": frame 300 SMPTE time 0:00:00:00/0 > type 1935828327 ('sbeg') channel 0 > > The names should be "Marker-990" "Marker-991" "Marker-992" and so on. > > > Anyone have any ideas? I'm stumped, and after three days working on this, I > can't find much outside information. > > Thanks, > > Charles > > > > > > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Coreaudio-api mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/coreaudio-api/dwyatt%40apple.com > > This email sent to [email protected] _______________________________________________ Do not post admin requests to the list. They will be ignored. Coreaudio-api mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/coreaudio-api/archive%40mail-archive.com This email sent to [email protected]
