David Robillard
bb9cc45cd2
Vimmers, try let c_space_errors = 1 in your .vimrc to highlight this kind of stuff in red. I don't know the emacs equivalent... git-svn-id: svn://localhost/ardour2/branches/3.0@5773 d708f5d6-7413-0410-9779-e7cbd77b26cf
100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
/* This file is part of Evoral.
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* Copyright (C) 2008 Dave Robillard <http://drobilla.net>
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*
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* Evoral is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* Evoral is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef EVORAL_EVENT_RING_BUFFER_HPP
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#define EVORAL_EVENT_RING_BUFFER_HPP
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#include <glib.h>
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#include "evoral/RingBuffer.hpp"
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#include "evoral/EventSink.hpp"
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#include "evoral/types.hpp"
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#include <iostream>
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using namespace std;
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namespace Evoral {
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/** A RingBuffer of events (generic time-stamped binary "blobs").
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*
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* This packs a timestamp, size, and size bytes of data flat into the buffer.
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* Useful for MIDI events, OSC messages, etc.
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*/
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template<typename Time>
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class EventRingBuffer : public Evoral::RingBuffer<uint8_t>, public Evoral::EventSink<Time> {
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public:
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/** @param capacity Ringbuffer capacity in bytes.
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*/
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EventRingBuffer(size_t capacity) : RingBuffer<uint8_t>(capacity)
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{}
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size_t capacity() const { return _size; }
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bool peek_time(Time* time);
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uint32_t write(Time time, EventType type, uint32_t size, const uint8_t* buf);
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bool read (Time* time, EventType* type, uint32_t* size, uint8_t* buf);
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};
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template<typename Time>
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inline bool
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EventRingBuffer<Time>::peek_time(Time* time)
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{
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bool success = RingBuffer<uint8_t>::full_peek(sizeof(Time), (uint8_t*)time);
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return success;
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}
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template<typename Time>
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inline bool
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EventRingBuffer<Time>::read(Time* time, EventType* type, uint32_t* size, uint8_t* buf)
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{
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bool success = RingBuffer<uint8_t>::full_read(sizeof(Time), (uint8_t*)time);
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if (success)
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success = RingBuffer<uint8_t>::full_read(sizeof(EventType), (uint8_t*)type);
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if (success)
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success = RingBuffer<uint8_t>::full_read(sizeof(uint32_t), (uint8_t*)size);
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if (success)
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success = RingBuffer<uint8_t>::full_read(*size, buf);
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return success;
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}
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template<typename Time>
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inline uint32_t
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EventRingBuffer<Time>::write(Time time, EventType type, uint32_t size, const uint8_t* buf)
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{
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if (write_space() < (sizeof(Time) + sizeof(EventType) + sizeof(uint32_t) + size)) {
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return 0;
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} else {
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RingBuffer<uint8_t>::write(sizeof(Time), (uint8_t*)&time);
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RingBuffer<uint8_t>::write(sizeof(EventType), (uint8_t*)&type);
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RingBuffer<uint8_t>::write(sizeof(uint32_t), (uint8_t*)&size);
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RingBuffer<uint8_t>::write(size, buf);
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return size;
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}
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}
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} // namespace Evoral
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#endif // EVORAL_EVENT_RING_BUFFER_HPP
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