vkGetEncodedVideoSessionParametersKHR

Encoded parameter data can be retrieved from a video session parameters object created with a video encode operation using the command:

VkResult vkGetEncodedVideoSessionParametersKHR(
    VkDevice device,
    const VkVideoEncodeSessionParametersGetInfoKHR* pVideoSessionParametersInfo,
    VkVideoEncodeSessionParametersFeedbackInfoKHR* pFeedbackInfo,
    size_t* pDataSize,
    void* pData);

• device is the logical device that owns the video session parameters object.
• pVideoSessionParametersInfo is a pointer to a VkVideoEncodeSessionParametersGetInfoKHR structure specifying the parameters of the encoded parameter data to retrieve.
• pFeedbackInfo is either NULL or a pointer to a VkVideoEncodeSessionParametersFeedbackInfoKHR structure in which feedback about the requested parameter data is returned.
• pDataSize is a pointer to a size_t value related to the amount of encode parameter data returned, as described below.
• pData is either NULL or a pointer to a buffer to write the encoded parameter data to.

If pData is NULL, then the size of the encoded parameter data, in bytes, that can be retrieved is returned in pDataSize. Otherwise, pDataSize must point to a variable set by the application to the size of the buffer, in bytes, pointed to by pData, and on return the variable is overwritten with the number of bytes actually written to pData. If pDataSize is less than the size of the encoded parameter data that can be retrieved, then no data will be written to pData, zero will be written to pDataSize, and VK_INCOMPLETE will be returned instead of VK_SUCCESS, to indicate that no encoded parameter data was returned.

If pFeedbackInfo is not NULL then the members of the VkVideoEncodeSessionParametersFeedbackInfoKHR structure and any additional structures included in its pNext chain that are applicable to the video session parameters object specified in pVideoSessionParametersInfo→videoSessionParameters will be filled with feedback about the requested parameter data on all successful calls to this command.