liberdm/include/erdm.h File Reference

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Enumerations

enum eDmCmdPriority { dmCmdPriorLow = 0, dmCmdPriorNormal, dmCmdPriorHigh, dmCmdPriorUrgent }

enum eDmQuality { dmQFull = 0, dmQBW, dmQTyping, dmQUndefined }

enum eDmCommandCode {
dmCcDisplay = 0, dmCcDisplayPartial, dmCcDump, dmCcEraseToWhite,
dmCcUndefined
}

Functions

int dmDisplay (eDmCmdPriority prior, eDmQuality qual)

int dmDisplayEraseToWhite (eDmCmdPriority prior)

int dmMessageInit (char *szDestination)

int dmDisplayPartial (eDmCmdPriority prior, eDmQuality qual, int xUp, int yUp, int xDown, int yDown)

int dmDump (eDmCmdPriority prior)

Enumeration Type Documentation

enum eDmCmdPriority

Enumerator:

dmCmdPriorLow
dmCmdPriorNormal
dmCmdPriorHigh
dmCmdPriorUrgent

Definition at line 37 of file erdm.h.

00038 {
00039     dmCmdPriorLow = 0,  // wait 1500 ms
00040     dmCmdPriorNormal,   // wait  500 ms
00041     dmCmdPriorHigh,     // wait  100 ms
00042     dmCmdPriorUrgent    // no wait, immediate display update
00043 } eDmCmdPriority;

enum eDmCommandCode

Enumerator:

dmCcDisplay
dmCcDisplayPartial
dmCcDump
dmCcEraseToWhite
dmCcUndefined

Definition at line 60 of file erdm.h.

00061 {
00062     dmCcDisplay = 0,      // do a full display update
00063     dmCcDisplayPartial,   // not implemented
00064     dmCcDump,             // not implemented
00065     dmCcEraseToWhite,     // blank display
00066     dmCcUndefined
00067 } eDmCommandCode;

enum eDmQuality

Enumerator:

dmQFull
dmQBW
dmQTyping
dmQUndefined

Definition at line 48 of file erdm.h.

00049 {
00050     dmQFull = 0,        // fullscreen waveform - makes display flicker once, sixteen gray levels
00051     dmQBW,              // black-and-white waveform - fastest one but horrible for grey pixels
00052     dmQTyping,          // typing waveform - looks nice, no display flicker, only four gray levels (0, 5, 10, 15)
00053     dmQUndefined
00054 } eDmQuality;

Function Documentation

int dmDisplay	(	eDmCmdPriority	prior,
		eDmQuality	qual
	)

Definition at line 107 of file erdm.c.

00108 {
00109     char    szMsg[DM_MAXCHARONLINE];
00110     uDmCommand dmCmd;
00111 
00112     dmCmd.dmCmdDisplay.cmd = dmCcDisplay;
00113     dmCmd.dmCmdDisplay.priority = prior;
00114     dmCmd.dmCmdDisplay.qual = qual;
00115 
00116     dmMessageFramer(szMsg, &dmCmd);
00117 
00118     if (!fInit)
00119     {
00120         dmMessageInit("127.0.0.1");
00121     }
00122 
00123     sendto(sockfd, szMsg, strlen(szMsg), 0, (struct sockaddr *) &serverAdr, sizeof(serverAdr));
00124     return 0;
00125 }

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int dmDisplayEraseToWhite ( eDmCmdPriority prior )

Definition at line 151 of file erdm.c.

00152 {
00153     char    szMsg[DM_MAXCHARONLINE];
00154     uDmCommand dmCmd;
00155 
00156     dmCmd.dmCmdDisplay.cmd = dmCcEraseToWhite;
00157     dmCmd.dmCmdDisplay.priority = prior;
00158 
00159     dmMessageFramer(szMsg, &dmCmd);
00160 
00161     if (!fInit)
00162     {
00163         dmMessageInit("127.0.0.1");
00164     }
00165 
00166     sendto(sockfd, szMsg, strlen(szMsg), 0, (struct sockaddr *) &serverAdr, sizeof(serverAdr));
00167     return 0;
00168 }

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int dmDisplayPartial	(	eDmCmdPriority	prior,
		eDmQuality	qual,
		int	xUp,
		int	yUp,
		int	xDown,
		int	yDown
	)

Definition at line 127 of file erdm.c.

00128 {
00129     char    szMsg[DM_MAXCHARONLINE];
00130     uDmCommand dmCmd;
00131 
00132     dmCmd.dmCmdDisplayPartial.cmd = dmCcDisplayPartial;
00133     dmCmd.dmCmdDisplayPartial.priority = prior;
00134     dmCmd.dmCmdDisplayPartial.qual = qual;
00135     dmCmd.dmCmdDisplayPartial.xUp = xUp;
00136     dmCmd.dmCmdDisplayPartial.yUp = yUp;
00137     dmCmd.dmCmdDisplayPartial.xDown = xDown;
00138     dmCmd.dmCmdDisplayPartial.yDown = yDown;
00139 
00140     dmMessageFramer(szMsg, &dmCmd);
00141 
00142     if (!fInit)
00143     {
00144         dmMessageInit("127.0.0.1");
00145     }
00146 
00147     sendto(sockfd, szMsg, strlen(szMsg), 0, (struct sockaddr *) &serverAdr, sizeof(serverAdr));
00148     return 0;
00149 }

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int dmDump ( eDmCmdPriority prior )

Definition at line 170 of file erdm.c.

00171 {
00172     ERDM_ERRORPRINTF("dmDump is not implemented.\n");
00173     return -1;
00174 }

int dmMessageInit ( char * szDestination )

Definition at line 44 of file erdm.c.

00045 {
00046     int     port;
00047     int     ret;
00048     struct in_addr destinationAdr;
00049 
00050     // Note:
00051     //   INADDR_LOOPBACK : "127.0.0.1"
00052     //   INADDR_ANY      : "0.0.0.0"
00053 
00054     if ((ret = inet_pton(AF_INET, szDestination, &destinationAdr)) == 1)
00055     {
00056         ERDM_LOGPRINTF("Sending messages to %s.\n", szDestination);
00057     }
00058     else if (ret == 0)
00059     {
00060         ERDM_ERRORPRINTF("%s not a presentation IP address (not in dotted decimal format).\n", szDestination);
00061         return -1;
00062     }
00063     else
00064     {
00065         ERDM_ERRORPRINTF("Failed to convert to a numeric IP address.\n");
00066         return -2;
00067     }
00068 
00069     dmGetServerPort(&port);
00070 
00071     sockfd = socket(AF_INET, SOCK_DGRAM, 0);
00072     bzero(&serverAdr, sizeof(serverAdr));
00073     serverAdr.sin_family = AF_INET;
00074     serverAdr.sin_addr.s_addr = destinationAdr.s_addr;
00075     serverAdr.sin_port = htons(port);
00076 
00077     fInit = 1;
00078     return 0;
00079 }

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Enumerations
enum	eDmCmdPriority { dmCmdPriorLow = 0, dmCmdPriorNormal, dmCmdPriorHigh, dmCmdPriorUrgent }
enum	eDmQuality { dmQFull = 0, dmQBW, dmQTyping, dmQUndefined }
enum	eDmCommandCode { dmCcDisplay = 0, dmCcDisplayPartial, dmCcDump, dmCcEraseToWhite, dmCcUndefined }
Functions
int	dmDisplay (eDmCmdPriority prior, eDmQuality qual)
int	dmDisplayEraseToWhite (eDmCmdPriority prior)
int	dmMessageInit (char *szDestination)
int	dmDisplayPartial (eDmCmdPriority prior, eDmQuality qual, int xUp, int yUp, int xDown, int yDown)
int	dmDump (eDmCmdPriority prior)