Dynamic HDR Info Structure - 1.2 English - PG351

HDMI 2.1 Receiver Subsystem v1.2 Product Guide (PG351)
Document ID
PG351
Release Date
2025-11-20
Version
1.2 English

The Dynamic HDR info structure is as follows.

typedef struct {
	XV_HdmiRxSs1_DynHdrErrType err; /* Error type */
	u16 pkt_type;	/* Packet Type */
	u16 pkt_length; /* Packet length */
	u8 gof;		/* Graphics Overlay Flag */
} XV_HdmiRxSs1_DynHDR_Info;

The following table provides details of the Dynamic HDR info structure variables and their relation.

Table 1. Dynamic HDR Info Structure
Info Frame Type PktType PktLength GOF
No Dynamic HDR 0 N/A N/A
ST 2094-10 (Annex R) 1 1 Up to 65535 0/1
ETSI TS 103-433-1 2 2 Up to 65535 0/1
ITU-T H.265 CRI 3 3 Up to 65535 0/1
ST 2094-40 (Annex S) 4 4 Up to 65535 0/1
HDR10+ VSIF 5 28 N/A
HDR-VIVID VS-EMDS 5 6 56 N/A
  1. For more information, see https://ieeexplore.ieee.org/document/7513370.
  2. For more information, see https://www.etsi.org/deliver/etsi_ts/103400_103499/10343301/01.02.01_60/ts_10343301v010201p.pdf.
  3. For more information, see https://www.itu.int/rec/T-REC-H.265.
  4. For more information, see https://ieeexplore.ieee.org/document/9095450.
  5. For HDR-VIVID EMDS, the packet type writes 6 to avoid conflict with the CTA 861 Dynamic HDR info frame. Before processing, replace the value with 2.

The following API functions are defined in the HDMI 2.1 RX Subsystemdriver to read of the Dynamic HDR metadata info frames packets.

To configure the Dynamic HDR metadata buffer address
void XV_HdmiRxSs1_DynHDR_SetAddr(XV_HdmiRxSs1 *InstancePtr, u64 Addr)
To read the Dynamic HDR info frame packet details
void XV_HdmiRxSs1_DynHDR_GetInfo(XV_HdmiRxSs1 *InstancePtr, XV_HdmiRxSs1_DynHDR_Info *RxDynHdrInfo)