MapBuffer

Function Usage

Maps the data in a buffer to the memory.

• If the data in the buffer can be mapped to the continuous memory in user mode, the data and dataLen fields in the buffer field must be filled for this interface.
• If the buffer data cannot be mapped to the continuous memory, set the data pointer in the buffer field to null and fill the dataLen field.

Restrictions

N/A

Prototype

int32_t MapBuffer(GpuEncoderBufferT &buffer, uint32_t flag = FLAG_READ) = 0

Parameters

The value of flag is FLAG_READ | FLAG_WRITE when both read and write are enabled.

enum MapFlag : uint32_t {
    FLAG_READ = 1,
    FLAG_WRITE = 1 << 1,
};

Returns

Data type: GpuEncoderErrorCode

The value can be:

• OK: The data in the buffer is successfully mapped.
• Other values except OK: The data in the buffer fails to be mapped.