VAEncMiscParameterBufferMultiPassFrameSize Struct Reference

Maximum frame size (in bytes) settings for multiple pass. More...

#include <va.h>

Public Attributes
va_deprecated VAEncMiscParameterType	type
	Type. Shall be set to #VAEncMiscParameterTypeMultiPassMaxFrameSize. More...
uint32_t	max_frame_size
	Maximum size of a frame (in byte)
uint32_t	reserved
	Reserved bytes for future use, must be zero.
uint8_t	num_passes
	number of passes, every pass has different QP, currently AVC encoder can support up to 4 passes
uint8_t *	delta_qp
	delta QP list for every pass
unsigned long	va_reserved [VA_PADDING_LOW]
	Reserved bytes for future use, must be zero.

Detailed Description

Maximum frame size (in bytes) settings for multiple pass.

This misc parameter buffer defines the maximum size of a frame (in bytes) settings for multiple pass. currently only AVC encoder can support this settings in multiple pass case. If the frame size exceeds this size, the encoder will do more pak passes to adjust the QP value to control the frame size.

Member Data Documentation

type

va_deprecated VAEncMiscParameterType VAEncMiscParameterBufferMultiPassFrameSize::type

Type. Shall be set to #VAEncMiscParameterTypeMultiPassMaxFrameSize.

duplicated with VAEncMiscParameterBuffer, should be deprecated

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The documentation for this struct was generated from the following file:

• va.h