Static kCMSampleBufferAttachmentKey_SampleReferenceByteOffset 

pub unsafe static kCMSampleBufferAttachmentKey_SampleReferenceByteOffset: &'static CFString

Available on crate feature CMSampleBuffer only.

Indicates the byte offset at which the sample data begins.

This key is only used for CMSampleBuffers representing sample references. Such CMSampleBuffers:

• have dataBuffer == NULL and imageBuffer == NULL
• have dataReady == true and no makeDataReadyCallback
• have a non-NULL formatDescription
• have numSamples > 0
• have numSampleTimingEntries > 0 and numSampleSizeEntries > 0

See also Apple’s documentation