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Add flag to swap references. #817

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Add flag to swap references. #817

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17 changes: 14 additions & 3 deletions va/va_vpp.h
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Original file line number Diff line number Diff line change
Expand Up @@ -989,11 +989,11 @@ typedef struct _VAProcPipelineParameterBuffer {
VABufferID *filters;
/** \brief Actual number of filters. */
uint32_t num_filters;
/** \brief Array of forward reference frames (past frames). */
/** \brief Array of forward reference frames (future frames by default). */
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non-backward change

VASurfaceID *forward_references;
/** \brief Number of forward reference frames that were supplied. */
uint32_t num_forward_references;
/** \brief Array of backward reference frames (future frames). */
/** \brief Array of backward reference frames (past frames by default). */
VASurfaceID *backward_references;
/** \brief Number of backward reference frames that were supplied. */
uint32_t num_backward_references;
Expand Down Expand Up @@ -1126,10 +1126,21 @@ typedef struct _VAProcPipelineParameterBuffer {
* If output_metadata is NULL, then output default to SDR.
*/
VAHdrMetaData *output_hdr_metadata;
/**
* \brief Swap references.
*
* There are different understanding of forward references(could be past frames or future frames)
* and backward references (could be past frames or future frames).
*
* This flag allows the user to configure the reference as past or future frames.
* - Value 0: by default, forward_references mean future frames, backward_references mean past frames
* - Value 1: swap, forward_references mean past frames, backward_references mean future frames
*/
uint8_t swap_references;

/** \brief Reserved bytes for future use, must be zero */
#if defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)|| defined(__LP64__)
uint32_t va_reserved[VA_PADDING_LARGE - 16];
uint32_t va_reserved[VA_PADDING_LARGE - 17];
#else
uint32_t va_reserved[VA_PADDING_LARGE - 13];
#endif
Expand Down