?? voip.h
字號:
/**************************************************************************
* voip.h - Header used by entire project.
* Author - Ed Hursey
* Date - December 2005
**************************************************************************/
#include "inetLib.h"
#include "rc4.h"
/* Dac and Adc buffers */
#define DAC_BUFFER_SIZE 1024
#define ADC_BUFFER_SIZE DAC_BUFFER_SIZE
#define SERVER_PORT_NUM 5002 /* server's port number for bind() */
#define REQUEST_MSG_SIZE ADC_BUFFER_SIZE/2 /* max size of request message */
#define RC4_KEY_DATA_LEN 8 /* lenght of the rc4 key data */
/* structure used for client's request */
struct new_request
{
int display; /* TRUE = display message */
char message[REQUEST_MSG_SIZE]; /* message buffer */
int request_type; /*1 = change mode, 2 = change complete, 3 = audio data */
int mode; /* 1= 8-bit, 2=8-bit stereo, 3=16 bit stereo*/
int message_number; /*used to sync packets and make sure we aren't loosing any*/
};
/*request that is recievied from other machines and played by local machine*/
struct new_request receivedRequest;
/*the request that will be transmitted, i.e. the recorded sound byte*/
struct new_request transmitRequest;
/*semaphorse for playback, record, and signifying packet receivied*/
SEM_ID SEM_DMA_Playback, SEM_DMA_Record, SEM_RECEIVED;
/*udp stuff*/
int sFd; /* client socket file descriptor */
struct sockaddr_in serverAddr; /* server's socket address */
int sockAddrSize; /* size of socket address structure */
/*buffers*/
void *DAC_BUFFER;
void *ADC_BUFFER;
int DTC_DMA_Playback, DTC_DMA_Record; /* Empty or Half Empty */
/*indicates if we are in 1 = 8 bit mono, 2 = 8 bit stereo, 3 = 16 bit stereo*/
/*track this so we know when we have to switch on the fly*/
int current_mode;
/*a persistenct copy of the rc4 key so we won't have to generate it every time*/
rc4_key perm_key;
/*which machine we are running on*/
int g_machine_number;
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