static CMTimeRange()
{
var lib = Dlfcn.dlopen(Constants.CoreMediaLibrary, 0);
if (lib != IntPtr.Zero)
{
try {
var retZero = Dlfcn.dlsym(lib, "kCMTimeRangeZero");
Zero = (CMTimeRange)Marshal.PtrToStructure(retZero, typeof(CMTimeRange));
var retInvalid = Dlfcn.dlsym(lib, "kCMTimeRangeInvalid");
#if !XAMCORE_3_0
Invalid = (CMTimeRange)Marshal.PtrToStructure(retInvalid, typeof(CMTimeRange));
#endif
InvalidRange = (CMTimeRange)Marshal.PtrToStructure(retInvalid, typeof(CMTimeRange));
var retMappingInvalid = Dlfcn.dlsym(lib, "kCMTimeMappingInvalid");
if (retMappingInvalid != IntPtr.Zero)
{
InvalidMapping = (CMTimeRange)Marshal.PtrToStructure(retMappingInvalid, typeof(CMTimeRange));
}
TimeMappingSourceKey = Dlfcn.GetStringConstant(lib, "kCMTimeMappingSourceKey");
TimeMappingTargetKey = Dlfcn.GetStringConstant(lib, "kCMTimeMappingTargetKey");
} finally {
Dlfcn.dlclose(lib);
}
}
}
static CMTimeRange()
{
var lib = Libraries.CoreMedia.Handle;
var retZero = Dlfcn.dlsym(lib, "kCMTimeRangeZero");
Zero = (CMTimeRange)Marshal.PtrToStructure(retZero, typeof(CMTimeRange));
var retInvalid = Dlfcn.dlsym(lib, "kCMTimeRangeInvalid");
#if !XAMCORE_3_0
Invalid = (CMTimeRange)Marshal.PtrToStructure(retInvalid, typeof(CMTimeRange));
#endif
InvalidRange = (CMTimeRange)Marshal.PtrToStructure(retInvalid, typeof(CMTimeRange));
var retMappingInvalid = Dlfcn.dlsym(lib, "kCMTimeMappingInvalid");
if (retMappingInvalid != IntPtr.Zero)
{
InvalidMapping = (CMTimeRange)Marshal.PtrToStructure(retMappingInvalid, typeof(CMTimeRange));
}
TimeMappingSourceKey = Dlfcn.GetStringConstant(lib, "kCMTimeMappingSourceKey");
TimeMappingTargetKey = Dlfcn.GetStringConstant(lib, "kCMTimeMappingTargetKey");
}
static extern CMTimeMapping CMTimeMappingMakeEmpty(CMTimeRange target);
static extern CMTimeMapping CMTimeMappingMake(CMTimeRange source, CMTimeRange target);
public static CMTimeMapping CreateEmpty(CMTimeRange target)
{
return(CMTimeMappingMakeEmpty(target));
}
public static CMTimeMapping Create(CMTimeRange source, CMTimeRange target)
{
return(CMTimeMappingMake(source, target));
}
public static CMTime Fold(CMTime time, CMTimeRange foldRange)
{
return(CMTimeFoldIntoRange(time, foldRange));
}
extern static CMTime CMTimeFoldIntoRange(CMTime time, CMTimeRange foldRange);
public void DidLoadTimeRange(NSUrlSession session, AVAggregateAssetDownloadTask aggregateAssetDownloadTask, CoreMedia.CMTimeRange timeRange, NSValue[] loadedTimeRanges, CoreMedia.CMTimeRange timeRangeExpectedToLoad, AVMediaSelection mediaSelection)
{
// This delegate callback should be used to provide download progress for your AVAssetDownloadTask.
if (!activeDownloadsMap.ContainsKey(aggregateAssetDownloadTask))
{
return;
}
var asset = activeDownloadsMap[aggregateAssetDownloadTask];
var percentComplete = 0.0;
foreach (var value in loadedTimeRanges)
{
var loadedTimeRange = value.CMTimeRangeValue;
percentComplete += loadedTimeRange.Duration.Seconds / timeRangeExpectedToLoad.Duration.Seconds;
}
var userInfo = new Dictionary <string, object>();
userInfo[Asset.Keys.Name] = new NSString(asset.Stream.Name);
userInfo[Asset.Keys.PercentDownloaded] = new NSNumber(percentComplete);
var userInfoDictionary = NSDictionary.FromObjectsAndKeys(userInfo.Values.ToArray(), userInfo.Keys.ToArray());
NSNotificationCenter.DefaultCenter.PostNotificationName(AssetPersistenceManager.AssetDownloadProgress, null, userInfoDictionary);
}