MFCreateAlignedMemoryBuffer Function
Allocates system memory with a specified byte alignment and creates a media buffer to manage the memory.
Syntax
HRESULT MFCreateAlignedMemoryBuffer(
DWORD cbMaxLength,
DWORD fAlignmentFlags,
IMFMediaBuffer **ppBuffer
);
Parameter
cbMaxLength
Size of the buffer, in bytes.fAlignmentFlags
Specifies the memory alignment for the buffer. Use one of the following constants.Wert Bedeutung MF_1_BYTE_ALIGNMENT 0x00000000 Align to 1 bytes.
MF_2_BYTE_ALIGNMENT 0x00000001 Align to 2 bytes.
MF_4_BYTE_ALIGNMENT 0x00000003 Align to 4 bytes.
MF_8_BYTE_ALIGNMENT 0x00000007 Align to 8 bytes.
MF_16_BYTE_ALIGNMENT 0x0000000F Align to 16 bytes.
MF_32_BYTE_ALIGNMENT 0x0000001F Align to 32 bytes.
MF_64_BYTE_ALIGNMENT 0x0000003F Align to 64 bytes.
MF_128_BYTE_ALIGNMENT 0x0000007F Align to 128 bytes.
MF_256_BYTE_ALIGNMENT 0x000000FF Align to 256 bytes.
MF_512_BYTE_ALIGNMENT 0x000001FF Align to 512 bytes.
ppBuffer
Receives a pointer to the IMFMediaBuffer interface of the media buffer. The caller must release the interface.
Rückgabewert
The function returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Rückgabecode | Beschreibung |
|---|---|
| S_OK | The function succeeded. |
Hinweise
When the media buffer object is destroyed, it releases the allocated memory.
Anforderungen
Mindestens unterstützter Client |
Windows Vista |
Mindestens unterstützter Server |
Windows Server 2008 |
Header |
Mfapi.h |
Bibliothek |
Mfplat.lib |
DLL |
Mfplat.dll |