---
title: kCMBlockBufferBadCustomBlockSourceErr
framework: coremedia
role: symbol
role_heading: Global Variable
path: coremedia/kcmblockbufferbadcustomblocksourceerr
---

# kCMBlockBufferBadCustomBlockSourceErr

An error code that indicates the custom block source is invalid.

## Declaration

```swift
var kCMBlockBufferBadCustomBlockSourceErr: OSStatus { get }
```

## See Also

### Errors

- [kCMBlockBufferBadLengthParameterErr](coremedia/kcmblockbufferbadlengthparametererr.md)
- [kCMBlockBufferBadOffsetParameterErr](coremedia/kcmblockbufferbadoffsetparametererr.md)
- [kCMBlockBufferBadPointerParameterErr](coremedia/kcmblockbufferbadpointerparametererr.md)
- [kCMBlockBufferBlockAllocationFailedErr](coremedia/kcmblockbufferblockallocationfailederr.md)
- [kCMBlockBufferEmptyBBufErr](coremedia/kcmblockbufferemptybbuferr.md)
- [kCMBlockBufferInsufficientSpaceErr](coremedia/kcmblockbufferinsufficientspaceerr.md)
- [kCMBlockBufferStructureAllocationFailedErr](coremedia/kcmblockbufferstructureallocationfailederr.md)
- [kCMBlockBufferUnallocatedBlockErr](coremedia/kcmblockbufferunallocatedblockerr.md)
- [kCMBlockBufferNoErr](coremedia/kcmblockbuffernoerr.md)