#hbVPISP

typedef struct {
  int8_t bufNum;
  int8_t bufCached;
  uint64_t backend;
  int32_t width;
  int32_t height;
} hbVPISPCtxParam;

ISP configuration parameter structure.

• Member

  Member Name	Description
  bufNum	The ISP bottom layer allocates the number of output buffers, supporting a minimum of 2 and a maximum of 9.
  bufCached	Whether to use cached buffer, 0: do not activate cache, 1: activate cache
  backend	Select the backend that performs ISP tasks
  width	The width of the input image
  height	The height of the input image

int32_t hbVPCreateISPContext(hbVPISPContext *context,
                             hbVPISPCtxParam const *ispCtxParam);

Create an ISP context API. Before creating it, you need to initialize the context to nullptr, each backend supports creating up to 8-way contexts at most. Due to J6B memory limitations, it is recommended to create a maximum of four contexts on J6B, and set the bufnum of each context to a maximum of 3.

• Parameter
  • [out] context ISP context.
  • [in] ispCtxParam ISP configuration structure.
• Return Value
  • Returning 0 means the API is executed successfully, otherwise it fails.

int32_t hbVPISP(hbUCPTaskHandle_t *taskHandle, hbVPImage const *srcImg,
                hbVPISPContext context);

The API for calling ISP.

• Parameter
  • [out] taskHandle The task handle is responsible for the interaction between the operator and the UCP architecture.
  • [in] srcImg Input image for ISP.
  • [in] context ISP context。
• Return Value
  • Return 0 means the API was successfully executed, otherwise the execution failed.
• Description of interface limitations
  • When executing ISP, the Image Format of the input image is required to be HB_VP_IMAGE_FORMAT_Y, the Image Type of the input image is required to be HB_VP_IMAGE_TYPE_U12C1.
  • Only asynchronous task creation is supported.

int32_t hbVPGetISPOutputBuffer(hbVPImage *outImg, hbUCPTaskHandle_t taskHandle);

The API for get ISP output buffer.

• Parameter
  • [out] outImg Output image of ISP. The image format is nv12.
  • [in] taskHandle The task handle is responsible for the interaction between the operator and the UCP architecture.
• Return Value
  • Return 0 means the API was successfully executed, otherwise the execution failed.
• Description of interface limitations
  • The image buffer dstImg is allocated internally by ISP.
  • When the task is successfully completed, the data in the output buffer is valid; in the task release phase, the output buffer will be released.

int32_t hbVPReleaseISPContext(hbVPISPContext context);

Release ISP context API.

• Parameter
  • [in] context ISP context。
• Return Value
  • Return 0 means the API was successfully executed, otherwise the execution failed.