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);
}
}
}
// Convenience method taking a strong dictionary
public static VTMultiPassStorage Create(
VTMultiPassStorageCreationOptions options,
NSUrl fileUrl = null,
CMTimeRange? timeRange = null)
{
return Create (fileUrl, timeRange, options != null ? options.Dictionary : null);
}
public static VTFrameSilo Create (NSUrl fileUrl = null, CMTimeRange? timeRange = null)
{
IntPtr ret;
var status = VTFrameSiloCreate (
IntPtr.Zero,
fileUrl == null ? IntPtr.Zero : fileUrl.Handle,
timeRange ?? CMTimeRange.Invalid,
IntPtr.Zero,
out ret);
if (status != VTStatus.Ok)
return null;
return new VTFrameSilo (ret, true);
}
public static VTMultiPassStorage Create(
NSUrl fileUrl = null,
CMTimeRange? timeRange = null,
NSDictionary options = null)
{
IntPtr ret;
var status = VTMultiPassStorageCreate (
IntPtr.Zero,
fileUrl == null ? IntPtr.Zero : fileUrl.Handle,
timeRange ?? CMTimeRange.Invalid,
options == null ? IntPtr.Zero : options.Handle,
out ret);
if (status != VTStatus.Ok)
return null;
return new VTMultiPassStorage (ret, true);
}
extern static /* OSStatus */ MTAudioProcessingTapError MTAudioProcessingTapGetSourceAudio ( /* MTAudioProcessingTapRef */ IntPtr tap, int numberFrames, /* AudioBufferList* */ IntPtr bufferListInOut, out MTAudioProcessingTapFlags flagsOut, out CMTimeRange timeRangeOut, out int numberFramesOut);
public MTAudioProcessingTapError GetSourceAudio (long frames, ref AudioBufferList bufferList, out MTAudioProcessingTapFlags flags,
out CMTimeRange timeRange, long framesProvided)
{
int outFp;
return MTAudioProcessingTapGetSourceAudio (handle, (int) frames, ref bufferList, out flags, out timeRange, out outFp);
}
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);
}
}
}
extern static /* OSStatus */ VTStatus VTFrameSiloCallFunctionForEachSampleBuffer ( /* VTFrameSiloRef */ IntPtr silo, /* CMTimeRange */ CMTimeRange timeRange, // CMTimeRange.Invalid retrieves all sample buffers /* void* */ IntPtr callbackInfo, /* */ EachSampleBufferCallback callback);
static extern CMTimeMapping CMTimeMappingMake(CMTimeRange source, CMTimeRange target);
public static CMTimeMapping Create(CMTimeRange source, CMTimeRange target)
{
return(CMTimeMappingMake(source, target));
}
public VTStatus GetTimeRangesForNextPass (out CMTimeRange [] timeRanges)
{
if (Handle == IntPtr.Zero)
throw new ObjectDisposedException ("CompressionSession");
IntPtr target;
int count;
var v = VTCompressionSessionGetTimeRangesForNextPass (Handle, out count, out target);
if (v != VTStatus.Ok) {
timeRanges = null;
return v;
}
timeRanges = new CMTimeRange [count];
unsafe {
CMTimeRange *ptr = (CMTimeRange *)target;
for (int i = 0; i < count; i++)
timeRanges [i] = ptr [i];
}
return VTStatus.Ok;
}
static extern VTStatus VTMultiPassStorageCreate(
/* CFAllocatorRef */IntPtr allocator, /* can be null */
/* CFURLRef */ IntPtr fileUrl, /* can be null */
/* CMTimeRange */ CMTimeRange timeRange, /* can be kCMTimeRangeInvalid */
/* CFDictionaryRef */ IntPtr options, /* can be null */
/* VTMultiPassStorageRef */ out IntPtr multiPassStorageOut);
extern static /* OSStatus */ VTStatus VTFrameSiloCreate ( /* CFAllocatorRef */ IntPtr allocator, /* can be null */ /* CFURLRef */ IntPtr fileUrl, /* can be null */ /* CMTimeRange */ CMTimeRange timeRange, /* can be kCMTimeRangeInvalid */ /* CFDictionaryRef */ IntPtr options, /* Reserved, always null */ /* VTFrameSiloRef */ out IntPtr siloOut);
public VTStatus ForEach (Func<CMSampleBuffer, VTStatus> callback, CMTimeRange? range = null)
{
callbackHandle = GCHandle.Alloc (callback);
var foreachResult = VTFrameSiloCallFunctionForEachSampleBuffer (handle, range ?? CMTimeRange.Invalid, GCHandle.ToIntPtr (callbackHandle), static_EachSampleBufferCallback);
callbackHandle.Free ();
return foreachResult;
}
public MTAudioProcessingTapError GetSourceAudio (long frames, AudioBuffers bufferList, out MTAudioProcessingTapFlags flags,
out CMTimeRange timeRange, long framesProvided)
{
if (bufferList == null)
throw new ArgumentNullException ("bufferList");
int result;
var r = MTAudioProcessingTapGetSourceAudio (handle, (int) frames, (IntPtr) bufferList, out flags, out timeRange, out result);
return r;
}
public MTAudioProcessingTapError GetSourceAudio (int frames, AudioBuffers bufferList, out MTAudioProcessingTapFlags flags, out CMTimeRange timeRange, out int framesProvided)
{
if (bufferList == null)
throw new ArgumentNullException ("bufferList");
return MTAudioProcessingTapGetSourceAudio (handle, frames, (IntPtr) bufferList, out flags, out timeRange, out framesProvided);
}
static extern CMTimeMapping CMTimeMappingMake(CMTimeRange source, CMTimeRange target);
static extern CMTimeMapping CMTimeMappingMakeEmpty(CMTimeRange target);
public static CMTimeMapping Create(CMTimeRange source, CMTimeRange target)
{
return CMTimeMappingMake (source, target);
}
public static CMTimeMapping CreateEmpty(CMTimeRange target)
{
return(CMTimeMappingMakeEmpty(target));
}
public static CMTimeMapping CreateEmpty(CMTimeRange target)
{
return CMTimeMappingMakeEmpty (target);
}
static extern CMTimeMapping CMTimeMappingMakeEmpty(CMTimeRange target);
public unsafe VTStatus SetTimeRangesForNextPass (CMTimeRange[] ranges)
{
if (ranges == null)
throw new ArgumentNullException ("ranges");
if (ranges.Length > 0)
fixed (CMTimeRange *first = &ranges [0]) {
return VTFrameSiloSetTimeRangesForNextPass (handle, ranges.Length, (IntPtr)first);
}
else
return VTFrameSiloSetTimeRangesForNextPass (handle, ranges.Length, IntPtr.Zero);
}