Structure Descriptions¶

PrGPUFilterInfo¶

This structure contains some basic info about a GPU filter. It provides access to various suites, and access to private data where the instance can allocate memory and store data which will be passed to subsequent functions.

typedef struct {
  csSDK_uint32  outInterfaceVersion;
  PrSDKString   outMatchName;
} PrGPUFilterInfo;

Member	Description
`outInterfaceVersion`	Set to the GPU API version corresponding to the version defined in the SDK you are using.
`outMatchName`	outMatchName must be equal to a registered software filter, if NULL will default to the module’s PiPL.

PrGPUFilterInstance¶

This structure contains some basic info about a GPU filter. It provides access to various suites, and access to private data where the instance can allocate memory and store data which will be passed to subsequent functions.

typedef struct {
  piSuitesPtr   piSuites;
  csSDK_uint32  inDeviceIndex;
  PrTimelineID  inTimelineID;
  csSDK_int32   inNodeID;
  void*         ioPrivatePluginData;
  prBool        outIsRealtime;
} PrGPUFilterInstance;

Member	Description
`piSuites`	Standard suites.
`inDeviceIndex`	For use with `PrSDKGPUDeviceSuite`.
`inTimelineID`	For use with `PrSDKVideoSegmentSuite`.
`inNodeID`	For use with `PrSDKVideoSegmentSuite`.
`ioPrivatePluginData`	Used by a plugin to store instance data, never touched by the host.
`outIsRealtime`	Specify if the plugin is likely to play in real-time, used to determine whether the segment is red, yellow, or unmarked in the timeline.

PrGPUFilterRenderParams¶

This structure describes the current render request.

typedef struct {
  PrTime  inClipTime;
  PrTime  inSequenceTime;

  // Render properties
  PrRenderQuality  inQuality;
  float            inDownsampleFactorX;
  float            inDownsampleFactorY;

  // Frame properties
  csSDK_uint32    inRenderWidth;
  csSDK_uint32    inRenderHeight;
  csSDK_uint32    inRenderPARNum;
  csSDK_uint32    inRenderPARDen;
  prFieldType     inRenderFieldType;
  PrTime          inRenderTicksPerFrame;
  pmFieldDisplay  inRenderField;
} PrGPUFilterRenderParams;

Member	Description
`inClipTime`	The time of the current render, relative to clip start
`inSequenceTime`	The time of the current render, relative to sequence start
`inQuality`	Render quality; one of the PrRenderQuality enum values
`inDownsampleFactorX`	Horizontal downsample factor
`inDownsampleFactorY`	Vertical downsample factor
`inRenderWidth`	Video resolution
`inRenderHeight`
`inRenderPARNum`	Video pixel aspect ratio, described as a fractional number with separate values for numerator and denominator.
`inRenderPARDen`
`inRenderFieldType`	Render field type
`inRenderTicksPerFrame`	Video frame rate
`inRenderField`	GPU rendering is always done on full-height progressive frames unless `PrGPUFilterFrameDependency.outNeedsFieldSeparation` is false. `inRenderField` indicates which field is being rendered.

PrGPUFilterFrameDependency¶

This structure describes any dependencies for a rendered frame.

typedef struct {
  PrGPUFilterFrameDependencyType  outDependencyType;

  // Dependence on other frame times
  csSDK_int32  outTrackID;
  PrTime       outSequenceTime;

  // Dependence on precomputation phase
  PrPixelFormat  outPrecomputePixelFormat;
  csSDK_uint32   outPrecomputeFrameWidth;
  csSDK_uint32   outPrecomputeFrameHeight;
  csSDK_uint32   outPrecomputeFramePARNumerator;
  csSDK_uint32   outPrecomputeFramePARDenominator;
  prFieldType    outPrecomputeFrameFieldType;
  csSDK_size_t   outPrecomputeCustomDataSize;
  prBool         outNeedsFieldSeparation;
} PrGPUFilterFrameDependency;

Member	Description
`outDependencyType`	The dependency type. Could be either: `PrGPUDependency_InputFrame`, `PrGPUDependency_Precompute`, `PrGPUDependency_FieldSeparation`
`outTrackID`	Specify which track is a dependency. Set to 0 for the current track
`outSequenceTime`	Set the sequence time which is a dependency.
`outPrecomputePixelFormat`	Dependence on precomputation phase
`outPrecomputeFrameWidth`
`outPrecomputeFrameHeight`
`outPrecomputeFramePARNumerator`
`outPrecomputeFramePARDenominator`
`outPrecomputeFrameFieldType`
`outPrecomputeCustomDataSize`	Only needed if `outPrecomputePixelFormat` is custom
`outNeedsFieldSeparation`	Indicates the plugin may operate on both fields simultaneously (eg non-spatial and non-time varying)