From 93850c202de8b073a1ce1dd8bd246d407bce4e2f Mon Sep 17 00:00:00 2001 From: David Robillard Date: Tue, 30 Sep 2008 16:50:21 +0000 Subject: Flatten ingen source directory heirarchy a bit. git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@1551 a436a847-0d15-0410-975c-d299462d15a1 --- src/engine/EventSink.cpp | 74 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 src/engine/EventSink.cpp (limited to 'src/engine/EventSink.cpp') diff --git a/src/engine/EventSink.cpp b/src/engine/EventSink.cpp new file mode 100644 index 00000000..6c775d4c --- /dev/null +++ b/src/engine/EventSink.cpp @@ -0,0 +1,74 @@ +/* This file is part of Ingen. + * Copyright (C) 2007 Dave Robillard + * + * Ingen is free software; you can redistribute it and/or modify it under the + * terms of the GNU General Public License as published by the Free Software + * Foundation; either version 2 of the License, or (at your option) any later + * version. + * + * Ingen is distributed in the hope that it will be useful, but WITHOUT ANY + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include "events/SendPortValueEvent.hpp" +#include "EventSink.hpp" +#include "PortImpl.hpp" + +using namespace std; + +namespace Ingen { + +#if 0 +void +EventSink::control_change(Port* port, FrameTime time, float val) +{ + //cerr << "CONTROL CHANGE: " << port->path() << " == " << val << endl; + SendPortValueEvent ev(_engine, time, port, false, 0, val); + _events.write(sizeof(ev), (uchar*)&ev); +} +#endif + +/** \a size is not size_t because an event will never be even remotely close + * to UINT32_MAX in size, so uint32_t saves wasted space on 64-bit. + */ +bool +EventSink::write(uint32_t size, const Event* ev) +{ + if (size > _events.write_space()) + return false; + + _events.write(sizeof(uint32_t), (uint8_t*)&size); + _events.write(size, (uint8_t*)ev); + + return true; +} + + +/** Read the next event into event_buffer. + * + * \a event_buffer can be casted to Event* and virtual methods called. + */ +bool +EventSink::read(uint32_t event_buffer_size, uint8_t* event_buffer) +{ + uint32_t read_size; + bool success = _events.full_read(sizeof(uint32_t), (uint8_t*)&read_size); + if (!success) + return false; + + assert(read_size <= event_buffer_size); + + if (read_size > 0) + return _events.full_read(read_size, event_buffer); + else + return false; +} + + +} // namespace Ingen -- cgit v1.2.1