Edit

DXVAHDDDI_STREAM_STATE_PRIVATE_IVTC_DATA structure (d3dumddi.h)

  • Article

The DXVAHDDDI_STREAM_STATE_PRIVATE_IVTC_DATA structure describes private stream-state data that is used to query the inverse telecine statistics from the driver.

Syntax

typedef struct _DXVAHDDDI_STREAM_STATE_PRIVATE_IVTC_DATA {
  [in/out] BOOL Enable;
  [out]    UINT ITelecineFlags;
  [out]    UINT Frames;
  [out]    UINT InputField;
} DXVAHDDDI_STREAM_STATE_PRIVATE_IVTC_DATA;

Members

[in/out] Enable

A Boolean value that indicates whether to capture the statistics is enabled. By enabling the capture of statistics, the driver resets all the statistics data to zero. The default value is FALSE, which indicates that capturing the statistics is disabled.

[out] ITelecineFlags

One of the following DXVAHDDDI_ITELECINE_CAPS enumeration values that indicates the telecine type that the driver detected while reversing the telecined frames.

Value Meaning
DXVAHDDDI_ITELECINE_CAPS_32 (0x1) The driver can perform reverse 3:2 telecine, NTSC(60i) -> Film(24p).
DXVAHDDDI_ITELECINE_CAPS_22 (0x2) The driver can perform reverse 2:2 telecine, PAL(50i) -> Film(25p:4% faster) and NTSC(60i) -> CG(30p).
DXVAHDDDI_ITELECINE_CAPS_2224 (0x4) The driver can perform reverse 2:2:2:4 telecine, NTSC(60i) -> DVCAM(24p).
DXVAHDDDI_ITELECINE_CAPS_2332 (0x8) The driver can perform reverse 2:3:3:2 telecine, NTSC(60i) -> DVCAM(24p).
DXVAHDDDI_ITELECINE_CAPS_32322 (0x10) The driver can perform reverse 3:2:3:2:2 telecine, NTSC(60i) -> Film(25p:4% faster).
DXVAHDDDI_ITELECINE_CAPS_55 (0x20) The driver can perform reverse 5:5 telecine, NTSC(60i) -> Animation(12p).
DXVAHDDDI_ITELECINE_CAPS_64 (0x40) The driver can perform reverse 6:4 telecine, NTSC(60i) -> Animation(12p).
DXVAHDDDI_ITELECINE_CAPS_87 (0x80) The driver can perform reverse 8:7 telecine, NTSC(60i) -> Anime(8p).
DXVAHDDDI_ITELECINE_CAPS_222222222223 (0x100) The driver can perform reverse 2:2:2:2:2:2:2:2:2:2:2:3 telecine, PAL(50i) -> Film(24p).
DXVAHDDDI_ITELECINE_CAPS_OTHER (0x80000000) The driver can perform reverse non-standard telecine.

[out] Frames

The number of consecutive frames that the driver detects for the telecined frames.

[out] InputField

The last field number of the input stream that was processed (so far). The driver updates this member after the driver has processed the input field that is specified in the InputFrameOrField member of the DXVAHDDDI_STREAM_DATA structure.

Remarks

The DXVAHDDDI_STREAM_STATE_PRIVATE_IVTC GUID is set in the Guid member of the DXVAHDDDI_STREAM_STATE_PRIVATE_DATA structure when the driver's GetVideoProcessStreamStatePrivate function is called to query the inverse telecine statistics from the driver.

When an application de-interlaces an interlaced stream, the driver might inverse the telecined frames. If the driver supports inverse telecine statistics, the application can query the statistics data.

The playback application can dynamically switch the frame rate converter as described in the following scenario:

  • The application enables the inverse telecine statistics.
  • The application begins to de-interlace the interlaced fields to the progressive frames.
  • At some point, the application queries the statistics and determines the streams are telecined frames.
  • The application enables the custom frame rate in order to output the frames at the original content frame rate (for example, 60i -> 24p).
The application continues to query the statistics to determine if the frames are changed (for example, progressive or interlaced).

Requirements

Requirement Value
Minimum supported client DXVAHDDDI_STREAM_STATE_PRIVATE_IVTC_DATA is supported beginning with the Windows 7 operating system.
Header d3dumddi.h (include D3dumddi.h)

See also

DXVAHDDDI_STREAM_DATA