Malloc and Free

Allocate memory aligned to a specified byte:
void* HMPP_Malloc(int32_t len);

Release memory:
void HMPP_Free(void* ptr);

Parameters

Parameter	Description	Value Range	Input/Output
len	Byte length (HMPP_Malloc function) Array length (HMPPS_Malloc_xxx function)	> 0	Input
ptr	Pointer to the memory block to be released (Free function)	The value cannot be NULL.	Input
width	HMPPI_Malloc_xxx_kk (kk can be C1, C2, C3, C4, or AC4, indicating the channel status) considers the allocated continuous memory as a two-dimensional matrix (width x height). width indicates the number of elements in each row.	> 0	Input
height	Number of rows in the two-dimensional matrix of HMPPI_Malloc_xxx_kk	> 0	Input
step	HMPPI_Malloc_xxx_kk fills the number of bytes in a line to an integral multiple of 64 and returns the value in the address specified by step.	The value cannot be NULL.	Output

Return Value

HMPP_Malloc function:

Success: The start pointer to the allocated memory is returned.
Failure: NULL

Error Codes

None

Note

The input parameter of the Free function must be the return value of the Malloc function.

Example

#define BUFFER_SIZE 100
void Malloc_Free_Example() {
    void *ptr = HMPP_Malloc(BUFFER_SIZE);
    HMPP_Free(ptr);
    uint8_t *ptrs = HMPPS_Malloc_8u(BUFFER_SIZE);
    HMPPS_Free(ptrs);
    int32_t step;
    uint8_t *ptri = HMPPI_Malloc_8u_C1(BUFFER_SIZE, 4, &step);
    printf("%d\n", step);
    HMPPI_Free(ptri);
}

Output:

Parent topic: Basic Functions