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#ifndef __ION_UTILS_H
#define __ION_UTILS_H
#include "ion.h"
#define SOCKET_NAME "ion_socket"
#define ION_DEVICE "/dev/ion"
#define ION_BUFFER_LEN 4096
#define MAX_HEAP_COUNT ION_HEAP_TYPE_CUSTOM
struct socket_info {
int sockfd;
int datafd;
unsigned long buflen;
};
struct ion_buffer_info {
int ionfd;
int buffd;
unsigned int heap_type;
unsigned int flag_type;
unsigned long heap_size;
unsigned long buflen;
unsigned char *buffer;
};
/* This is used to fill the data into the mapped buffer */
void write_buffer(void *buffer, unsigned long len);
/* This is used to read the data from the exported buffer */
void read_buffer(void *buffer, unsigned long len);
/* This is used to create an ION buffer FD for the kernel buffer
* So you can export this same buffer to others in the form of FD
*/
int ion_export_buffer_fd(struct ion_buffer_info *ion_info);
/* This is used to import or map an exported FD.
* So we point to same buffer without making a copy. Hence zero-copy.
*/
int ion_import_buffer_fd(struct ion_buffer_info *ion_info);
/* This is used to close all references for the ION client */
void ion_close_buffer_fd(struct ion_buffer_info *ion_info);
/* This is used to send FD to another process using socket IPC */
int socket_send_fd(struct socket_info *skinfo);
/* This is used to receive FD from another process using socket IPC */
int socket_receive_fd(struct socket_info *skinfo);
#endif
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