Description

Current H264 parameters – format identical to SLASetH264Parameters_t.

typedef struct {
  u32 targetBitRate;
  u8 intraFrameInterval;
  u8 lfDisableIdc;
  u8 airMbPeriod;
  u8 sliceRefreshRowNumber;
  u8 flags;
  u16 displayId;
} SLACurrentH264Parameters_t;

Sent in response to SLAGetParameters_t().

Message ID 0x56

Byte Offset	Name	Description
4-7	targetBitRate	Target bit rate, bits per second (3000/1500: default 1500000, 4000: default 3000000)
8	intraFrameInterval	1-90 = Intra frame (I-frame) interval (default 30). The rate at which I-frames are produced. 0 = Use intra refresh mode where there are blocks of I data in every frame resulting in a smoother overall bitrate. Note: not all decoders can connect to an intra refresh stream. Intra refresh is only support with H264 on the 3000 or 4000, and H265 on the 4000.
9	lfDisableIdc	H264 in-loop filter control. See SLASetH264Parameters_t.
10	airMbPeriod	Only used if intraFrameInterval is 0. 3000 - Adaptive Intra Refresh (AIR) mega-block period (default 0). 4000 - Cyclic Intra Refresh (CIR) mega-block period, if 0 a default value of 20 will be used.
11	sliceRefreshRowNumber	Only used if intraFrameInterval is 0. 3000 - Slice refresh row number – number of rows coded as each intra slice (default 0)
12	flags	Profile and rate control settings. See SLASetH264Parameters_t.
13-14	displayId	Network Display ID 3000 / 4000: (0x0002 = Net0, 0x0080 = Net1) 1500: Ignored or 0x0000