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/*
* GraphLCD driver library
*
* vncserver.h - vncserver device
* Output goes to a vncserver device
*
* This file is released under the GNU General Public License. Refer
* to the COPYING file distributed with this package.
*
* (c) 2013 Michael Heyer
*/
#include <fcntl.h>
#include <stdio.h>
#include <syslog.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include "common.h"
#include "config.h"
#include "vncserver.h"
namespace GLCD
{
cDriverVncServer::cDriverVncServer(cDriverConfig * config)
: cDriver(config),
offbuff(0)
{
}
int cDriverVncServer::Init()
{
printf(" init.\n");
width = config->width;
height = config->height;
// Figure out the size of the screen in bytes
screensize = width * height * 4;
depth = 24;
server = rfbGetScreen(NULL,NULL,width,height,8,3,4);
if (!server)
{
syslog(LOG_ERR, "failed to creat vncserver device.\n");
return -1;
}
for (unsigned int i = 0; i < config->options.size(); i++)
{
if (config->options[i].name == "HttpDir")
{
server->httpDir = (char *)config->options[i].value.c_str();
}
}
// init bounding box
bbox[0] = width - 1; // x top
bbox[1] = height - 1; // y top
bbox[2] = 0; // x bottom
bbox[3] = 0; // y bottom
// reserve another memory to draw into
offbuff = new char[screensize];
if (!offbuff)
{
syslog(LOG_ERR, "%s: failed to alloc memory for vncserver device.\n", config->name.c_str());
return -1;
}
server->frameBuffer=offbuff;
rfbInitServer(server);
*oldConfig = *config;
// clear display
Refresh(true);
rfbRunEventLoop(server, 5000, true);
syslog(LOG_INFO, "%s: VncServer initialized.\n", config->name.c_str());
return 0;
}
int cDriverVncServer::DeInit()
{
if (offbuff)
delete[] offbuff;
return 0;
}
int cDriverVncServer::CheckSetup()
{
if (config->device != oldConfig->device ||
config->port != oldConfig->port ||
32 != oldConfig->width ||
config->height != oldConfig->height)
{
DeInit();
Init();
return 0;
}
if (config->upsideDown != oldConfig->upsideDown ||
config->invert != oldConfig->invert)
{
oldConfig->upsideDown = config->upsideDown;
oldConfig->invert = config->invert;
return 1;
}
return 0;
}
void cDriverVncServer::SetPixel(int x, int y, uint32_t data)
{
int location;
if (x >= width || y >= height)
return;
if (config->upsideDown)
{
x = width - 1 - x;
y = height - 1 - y;
}
location = (x + y * width) * 4;
unsigned char r,g,b;
r = (data & 0x00FF0000) >> 16;
g = (data & 0x0000FF00) >> 8;
b = (data & 0x000000FF) >> 0;
if (config->invert) {
r = 255 - r;
g = 255 - g;
b = 255 - b;
}
*(offbuff + location + 0) = r;
*(offbuff + location + 1) = g;
*(offbuff + location + 2) = b;
if (x < bbox[0]) bbox[0] = x;
if (y < bbox[1]) bbox[1] = y;
if (x > bbox[2]) bbox[2] = x;
if (y > bbox[3]) bbox[3] = y;
}
void cDriverVncServer::Clear()
{
memset(offbuff, 0, screensize);
processDamage();
}
void cDriverVncServer::Refresh(bool refreshAll)
{
if (refreshAll) {
bbox[0] = 0;
bbox[1] = 0;
bbox[2] = width - 1;
bbox[3] = height - 1;
}
processDamage();
}
bool cDriverVncServer::GetDriverFeature (const std::string & Feature, int & value) {
if (offbuff) {
if (strcasecmp(Feature.c_str(), "depth") == 0) {
value = depth;
return true;
} else if (strcasecmp(Feature.c_str(), "ismonochrome") == 0) {
value = 0;
return true;
} else if (strcasecmp(Feature.c_str(), "isgreyscale") == 0 || strcasecmp(Feature.c_str(), "isgrayscale") == 0) {
value = 0;
return true;
} else if (strcasecmp(Feature.c_str(), "iscolour") == 0 || strcasecmp(Feature.c_str(), "iscolor") == 0) {
value = 1;
return true;
#if 0
} else if (strcasecmp(Feature.c_str(), "touch") == 0 || strcasecmp(Feature.c_str(), "touchscreen") == 0) {
if (...) {
value = (...) ? 1 : 0;
}
return true;
#endif
}
}
value = 0;
return false;
}
/* defines for different damage processing calls needed by _update() */
void cDriverVncServer::processDamage (void) {
if (!((bbox[0] == (width - 1)) && (bbox[1] == (height - 1)) && (bbox[2] == 0) && (bbox[3] == 0))) {
rfbMarkRectAsModified(server,bbox[0],bbox[1],bbox[2],bbox[3]);
}
/* reset bounding box */
bbox[0] = width - 1;
bbox[1] = height - 1;
bbox[2] = 0;
bbox[3] = 0;
}
} // end of namespace
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