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79 lines
2.0 KiB
79 lines
2.0 KiB
15 years ago
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/*****************************************************************
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Copyright (c) 2001 Charles Samuels <charles@kde.org>
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2001 Neil Stevens <multivac@fcmail.com>
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With code stolen from Paul Harrison <pfh@yoyo.cc.monash.edu.au>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIAB\ILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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******************************************************************/
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#include <sys/wait.h>
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#include <sys/types.h>
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#include "sdlscope.h"
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extern "C"
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{
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Plugin *create_plugin()
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{
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return new SDLScope();
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}
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}
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SDLScope::SDLScope()
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: MonoScope(50)
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, Plugin()
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{
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setSamples(320);
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}
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SDLScope::~SDLScope()
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{
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::close(mOutFd);
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wait(0);
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}
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void SDLScope::init()
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{
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int pipes[2];
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::pipe(pipes);
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mOutFd=pipes[1];
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if (!fork())
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{
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::close(pipes[1]);
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new SDLView(pipes[0]);
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exit(0);
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}
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else
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{
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fcntl(mOutFd, F_SETFL, fcntl(mOutFd, F_GETFL) & ~O_NONBLOCK);
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::close(pipes[0]);
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MonoScope::start();
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}
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}
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void SDLScope::scopeEvent(float *d, int size)
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{
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if (::write(mOutFd, (char *)d, size * sizeof(float))==-1)
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{
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MonoScope::stop();
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unload();
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}
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}
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