hi_venc_h265_attr

Defines the H.265 encoding attributes.

For Ascend 950PR/Ascend 950DT, this structure is not supported.

For Atlas A3 training products/Atlas A3 inference products, this structure is not supported.

For Atlas A2 training products/Atlas A2 inference products, this structure is not supported.

For Atlas inference products, this structure is reserved.

typedef struct {
    hi_bool rcn_ref_share_buf_en;
    hi_u32 frame_buf_ratio;
} hi_venc_h265_attr;

For details about basic data types hi_bool and hi_u32, see Basic Data Types.

Member	Description
rcn_ref_share_buf_en	Buffer sharing enable for the reference frame and write-back frame. Reserved. Value range: [0,1]. 1: enabled; 0: disabled. This is a static attribute.
frame_buf_ratio	Frame buffer ratio. After being set, the system compresses the frame buffer based on the ratio. Value range: [70, 100]. For example, if frame_buf_ratio is set to 80, the frame buffer size is 80% of the original size. The default value is 100, indicating that the frame buffer is not compressed. If the value is not within the value range, the frame buffer is not compressed. If the value is within the range of [70, 100), the frame buffer is compressed proportionally, which may affect the encoding quality. You are advised to set this parameter to a value within the range of [70, 100) when the image texture is not complex, the resolution is greater than 640 × 480, and there is a requirement on the memory bandwidth.

Member

Description

rcn_ref_share_buf_en

Buffer sharing enable for the reference frame and write-back frame. Reserved.

Value range: [0,1]. 1: enabled; 0: disabled.

This is a static attribute.

frame_buf_ratio

Frame buffer ratio. After being set, the system compresses the frame buffer based on the ratio.

Value range: [70, 100]. For example, if frame_buf_ratio is set to 80, the frame buffer size is 80% of the original size.

The default value is 100, indicating that the frame buffer is not compressed.
If the value is not within the value range, the frame buffer is not compressed.
If the value is within the range of [70, 100), the frame buffer is compressed proportionally, which may affect the encoding quality. You are advised to set this parameter to a value within the range of [70, 100) when the image texture is not complex, the resolution is greater than 640 × 480, and there is a requirement on the memory bandwidth.

Parent topic: VENC/JPEGE