diff options
Diffstat (limited to 'glcddrivers/vncserver.c')
| -rw-r--r-- | glcddrivers/vncserver.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/glcddrivers/vncserver.c b/glcddrivers/vncserver.c new file mode 100644 index 0000000..8461548 --- /dev/null +++ b/glcddrivers/vncserver.c @@ -0,0 +1,211 @@ +/* + * 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 |