MFT_MESSAGE_TYPE enumeration (mftransform.h)

Defines messages for a Media Foundation transform (MFT). To send a message to an MFT, call IMFTransform::ProcessMessage.

Syntax

typedef enum _MFT_MESSAGE_TYPE {
  MFT_MESSAGE_COMMAND_FLUSH = 0,
  MFT_MESSAGE_COMMAND_DRAIN = 0x1,
  MFT_MESSAGE_SET_D3D_MANAGER = 0x2,
  MFT_MESSAGE_DROP_SAMPLES = 0x3,
  MFT_MESSAGE_COMMAND_TICK = 0x4,
  MFT_MESSAGE_NOTIFY_BEGIN_STREAMING = 0x10000000,
  MFT_MESSAGE_NOTIFY_END_STREAMING = 0x10000001,
  MFT_MESSAGE_NOTIFY_END_OF_STREAM = 0x10000002,
  MFT_MESSAGE_NOTIFY_START_OF_STREAM = 0x10000003,
  MFT_MESSAGE_NOTIFY_RELEASE_RESOURCES = 0x10000004,
  MFT_MESSAGE_NOTIFY_REACQUIRE_RESOURCES = 0x10000005,
  MFT_MESSAGE_NOTIFY_EVENT = 0x10000006,
  MFT_MESSAGE_COMMAND_SET_OUTPUT_STREAM_STATE = 0x10000007,
  MFT_MESSAGE_COMMAND_FLUSH_OUTPUT_STREAM = 0x10000008,
  MFT_MESSAGE_COMMAND_MARKER = 0x20000000
} MFT_MESSAGE_TYPE;

Constants

MFT_MESSAGE_COMMAND_FLUSH Value: 0 Requests the MFT to flush all stored data. Should only be called after streaming has started using the MFT_MESSAGE_NOTIFY_BEGIN_STREAMING message. See MFT_MESSAGE_COMMAND_FLUSH.
MFT_MESSAGE_COMMAND_DRAIN Value: 0x1 Requests the MFT to drain any stored data. Should only be called after streaming has started using the MFT_MESSAGE_NOTIFY_BEGIN_STREAMING message. See MFT_MESSAGE_COMMAND_DRAIN.
MFT_MESSAGE_SET_D3D_MANAGER Value: 0x2 Sets or clears the Direct3D Device Manager for DirectX Video Acceleration (DXVA). Must be called before SetInputType or SetOutputType. See MFT_MESSAGE_SET_D3D_MANAGER.
MFT_MESSAGE_DROP_SAMPLES Value: 0x3 Note Requires Windows 7.
MFT_MESSAGE_COMMAND_TICK Value: 0x4 Note Requires Windows 8.
MFT_MESSAGE_NOTIFY_BEGIN_STREAMING Value: 0x10000000 Notifies the MFT that streaming is about to begin. Must be called after SetInputType and SetOutputType. See MFT_MESSAGE_NOTIFY_BEGIN_STREAMING.
MFT_MESSAGE_NOTIFY_END_STREAMING Value: 0x10000001 Notifies the MFT that streaming is about to end. See MFT_MESSAGE_NOTIFY_END_STREAMING.
MFT_MESSAGE_NOTIFY_END_OF_STREAM Value: 0x10000002 Notifies the MFT that an input stream has ended. See MFT_MESSAGE_NOTIFY_END_OF_STREAM.
MFT_MESSAGE_NOTIFY_START_OF_STREAM Value: 0x10000003 Notifies the MFT that the first sample is about to be processed. Must be called after SetInputType and SetOutputType. See MFT_MESSAGE_NOTIFY_START_OF_STREAM.
MFT_MESSAGE_NOTIFY_RELEASE_RESOURCES Value: 0x10000004
MFT_MESSAGE_NOTIFY_REACQUIRE_RESOURCES Value: 0x10000005
MFT_MESSAGE_NOTIFY_EVENT Value: 0x10000006
MFT_MESSAGE_COMMAND_SET_OUTPUT_STREAM_STATE Value: 0x10000007
MFT_MESSAGE_COMMAND_FLUSH_OUTPUT_STREAM Value: 0x10000008
MFT_MESSAGE_COMMAND_MARKER Value: 0x20000000 Marks a point in the stream. This message applies only to asynchronous MFTs. See MFT_MESSAGE_COMMAND_MARKER. Note  Requires Windows 7

Remarks

Some messages require specific actions from the MFT. These events have "MESSAGE" in the message name. Other messages are informational; they notify the MFT of some action by the client, and do not require any particular response from the MFT. These messages have "NOTIFY" in the messages name. Except where noted, an MFT should not rely on the client sending notification messages.

Requirements

Requirement	Value
Minimum supported client	Windows Vista [desktop apps | UWP apps]
Minimum supported server	Windows Server 2008 [desktop apps | UWP apps]
Header	mftransform.h

See also

IMFTransform::ProcessMessage

Media Foundation Enumerations

Media Foundation Transforms