#Istream 3 code
#Istream 3 free

#Istream 3 free

It’s easily controlled with the free UNDOK iOS/Android smartphone app.īrowsing stations is really simple thanks to on-screen radio station listings that are automatically updated and conveniently sorted into country or genre. Listen to your personal music collection by streaming direct from your PC/Mac/NAS via Music player.

The Stat method is supported, but the STATFLAG_NONAME value must be specified.Built-in FM/DAB/DAB+, built-in wireless connectivity, access to Spotify Connect, and a choice of 20,000+ internet radio stations and podcasts.

The Clone and CopyTo methods are not supported.

A storage is simple mode if it is created or opened with the STGM_SIMPLE flag set in the grfMode parameter.

A stream is simple mode if it was created or opened from a simple-mode storage.

Retrieves the STATSTG structure for this streamĬreates a new stream object with its own seek pointer that references the same bytes as the original stream.Ī simple-mode IStream is subject to the following constraints. Removes the access restriction on a range of bytes previously restricted with IStream::LockRegion. Range-locking is not supported by this implementation, so a call to this method has no effect. This implementation does not support transacted streams, so a call to this method has no effect. In this implementation, it does not matter if you commit changes to streams, you need only commit changes for storage objects. Therefore, the method has no effect when called other than to flush all memory buffers to the next storage level. The compound file implementation of IStream supports opening streams only in direct mode, not transacted mode. In this implementation, there is no guarantee that the space allocated will be contiguous.Ĭopies a specified number of bytes from the current seek pointer in the stream to the current seek pointer in another stream. Any fill bytes are eventually allocated on the disk and assigned to the stream.Ĭhanges the seek pointer to a new location relative to the beginning of the stream, to the end of the stream, or to the current seek pointer.Ĭhanges the size of the stream object.

In this implementation, stream objects are not sparse. Writes a specified number from bytes into the stream object starting at the current seek pointer. (This is the same as the 'end of file' behavior found in the MS-DOS FAT file system.) This implementation returns S_OK if the end of the stream was reached during the read.

Reads a specified number of bytes from the stream object into memory starting at the current seek pointer. This is not, however, as efficient as using VirtualAlloc, as described above. No data copying occurs and memory is committed only as it is required.Īn alternative to GlobalRealloc is to call the IStream::SetSize method on the stream object to increase the memory allocation in advance. This can reserve a large chunk of virtual address space and then commit memory within that address space as required. The preferred solution is to implement an IStream method that uses memory allocated by VirtualAlloc instead of GlobalAlloc. This is due to the size of the increments copied and is worsened if there is less than 45 MB of memory on the computer because of disk swapping. Because GlobalRealloc always copies data from the source to the destination, increasing a stream object from 20 MB to 25 MB, for example, requires large amounts of time. If creating a stream object that is larger than the heap in your computer's memory and you are using an HGLOBAL handle to a global memory object, the stream object calls the GlobalRealloc method internally whe it requires more memory.

#Istream 3 code

In either case, the same IStream implementation code is used. These functions retrieve an IStorage pointer, with which you can then call CreateStream or OpenStream for an IStream pointer. To get an IStream pointer within a compound file object, call either StgCreateDocfile or StgOpenStorage. To create a simple stream based on global memory, get an IStream pointer by calling the API function CreateStreamOnHGlobal. The COM implementation also does not support stream transactioning or region locking. However, the COM implementation only supports streams up to 2³² bytes in length (4 GB) and read and write operations are always limited to 2³² bytes at a time. For example, the IStream interface defines streams up to 2⁶⁴ bytes in length requiring a 64-bit seek pointer. The specification of IStream defines more functionality than the COM implementation supports. Simple data can be written directly to a stream, but more frequently, streams are elements nested within a storage object. In a structured storage object, stream objects contain the data and storages provide the structure. The IStream interface supports reading and writing data to stream objects.