100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
/*
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osc/bundle.cpp
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Copyright (c) 2022 Kevin Matz (kevin.matz@gmail.com)
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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 all
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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 OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "bundle.h"
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namespace OSC {
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size_t Bundle::streamSize() const
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{
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size_t size = 16; // "#bundle" + timetag
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for (const auto &element: elements)
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size += 4 + element->streamSize(); // element's length + element length
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return size;
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}
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void Bundle::iStream(std::shared_ptr<bufferstream> buffer)
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{
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auto element = [&](std::shared_ptr<Message> msg, uint32_t size) {
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msg->iStream(buffer);
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// The element, as read, must match the prescribed size.
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if (!buffer->fail())
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{
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if (msg->streamSize() == size)
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elements.push_back(msg);
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else
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buffer->setstate(std::ios::failbit);
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}
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};
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/// An OSC Bundle consists of the OSC-string “#bundle”
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std::string header;
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Message::readString(buffer, header);
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if (header.compare(address_pattern) != 0)
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return buffer->setstate(std::ios::failbit);
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/// ... followed by an OSC Time Tag
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time_tag.iStream(buffer);
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/// ... followed by zero or more OSC Bundle Elements.
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while (buffer->available() && buffer->good())
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{
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/// > \cite Spec10 An OSC Bundle Element consists of its size and its contents.
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/// > \cite Spec10 The size is an int32 representing the number of 8-bit bytes
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/// > in the contents, and will always be a multiple of 4.
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uint32_t size = buffer->readType<int32_t>();
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if (size % 4 != 0)
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return buffer->setstate(std::ios::failbit);
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/// > \cite Spec10 The contents are either an OSC Message or an OSC Bundle.
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switch (buffer->peek()) {
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case '/':
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element(std::make_shared<Message>(), size);
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break;
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case '#':
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element(std::make_shared<Bundle>(), size);
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break;
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default:
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buffer->setstate(std::ios::failbit);
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}
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}
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}
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void Bundle::oStream(std::shared_ptr<bufferstream> buffer) const
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{
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Message::writeString(buffer, address_pattern);
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time_tag.oStream(buffer);
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for (const auto &element: elements)
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{
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buffer->writeType<int32_t>(element->streamSize());
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element->oStream(buffer);
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}
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}
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} // namespace OSC
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