170 lines
4.2 KiB
C++
170 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <cstdlib>
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#include <cstring>
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#include <string>
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#include <png.h>
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#include <signal.h>
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#include <Poco/Exception.h>
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#include <Poco/Format.h>
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#include <Poco/Net/WebSocket.h>
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#include <Poco/Process.h>
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#include <Poco/Timestamp.h>
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#include <Poco/Thread.h>
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#include <Poco/Util/Application.h>
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#include "Util.hpp"
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// Callback functions for libpng
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extern "C"
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{
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static void user_write_status_fn(png_structp, png_uint_32, int)
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{
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}
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static void user_write_fn(png_structp png_ptr, png_bytep data, png_size_t length)
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{
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std::vector<char> *outputp = (std::vector<char> *) png_get_io_ptr(png_ptr);
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size_t oldsize = outputp->size();
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outputp->resize(oldsize + length);
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memcpy(outputp->data() + oldsize, data, length);
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}
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static void user_flush_fn(png_structp)
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{
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}
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}
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namespace Util
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{
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std::string logPrefix()
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{
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static Poco::Timestamp firstTimeStamp;
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Poco::Int64 now = firstTimeStamp.elapsed();
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return std::to_string(Poco::Process::id()) + ":" + (Poco::Thread::current() ? std::to_string(Poco::Thread::current()->id()) : "0") + ":" + std::to_string(now / 1000000) + "." + Poco::format("%03d", (int)((now / 1000) % 1000)) + ": ";
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}
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bool windowingAvailable()
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{
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#ifdef __linux
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return std::getenv("DISPLAY") != NULL;
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#endif
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return false;
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}
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bool encodePNGAndAppendToBuffer(unsigned char *pixmap, int width, int height, std::vector<char>& output)
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{
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png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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png_infop info_ptr = png_create_info_struct(png_ptr);
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if (setjmp(png_jmpbuf(png_ptr)))
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{
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png_destroy_write_struct(&png_ptr, NULL);
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return false;
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}
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png_set_IHDR(png_ptr, info_ptr, width, height, 8, PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
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png_set_write_fn(png_ptr, &output, user_write_fn, user_flush_fn);
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png_set_write_status_fn(png_ptr, user_write_status_fn);
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png_write_info(png_ptr, info_ptr);
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for (int y = 0; y < height; ++y)
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png_write_row(png_ptr, pixmap + y * width * 4);
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png_write_end(png_ptr, info_ptr);
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png_destroy_write_struct(&png_ptr, NULL);
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return true;
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}
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void shutdownWebSocket(Poco::Net::WebSocket& ws)
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{
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try
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{
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ws.shutdown();
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}
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catch (Poco::IOException& exc)
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{
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Poco::Util::Application::instance().logger().error(logPrefix() + "IOException: " + exc.message());
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}
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}
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std::string signalName(int signo)
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{
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switch (signo)
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{
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#define CASE(x) case SIG##x: return #x
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CASE(HUP);
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CASE(INT);
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CASE(QUIT);
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CASE(ILL);
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CASE(ABRT);
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CASE(FPE);
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CASE(KILL);
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CASE(SEGV);
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CASE(PIPE);
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CASE(ALRM);
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CASE(TERM);
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CASE(USR1);
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CASE(USR2);
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CASE(CHLD);
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CASE(CONT);
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CASE(STOP);
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CASE(TSTP);
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CASE(TTIN);
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CASE(TTOU);
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CASE(BUS);
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#ifdef SIGPOLL
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CASE(POLL);
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#endif
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CASE(PROF);
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CASE(SYS);
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CASE(TRAP);
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CASE(URG);
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CASE(VTALRM);
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CASE(XCPU);
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CASE(XFSZ);
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#ifdef SIGEMT
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CASE(EMT);
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#endif
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#ifdef SIGSTKFLT
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CASE(STKFLT);
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#endif
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#if defined(SIGIO) && SIGIO != SIGPOLL
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CASE(IO);
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#endif
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#ifdef SIGPWR
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CASE(PWR);
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#endif
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#ifdef SIGLOST
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CASE(LOST);
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#endif
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CASE(WINCH);
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#if defined(SIGINFO) && SIGINFO != SIGPWR
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CASE(INFO);
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#endif
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#undef CASE
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default:
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return std::to_string(signo);
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}
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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