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Diffstat (limited to 'src/engine/LV2EventBuffer.hpp')
-rw-r--r-- | src/engine/LV2EventBuffer.hpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/engine/LV2EventBuffer.hpp b/src/engine/LV2EventBuffer.hpp new file mode 100644 index 00000000..7e60dff0 --- /dev/null +++ b/src/engine/LV2EventBuffer.hpp @@ -0,0 +1,79 @@ +/* This file is part of Ingen. + * Copyright (C) 2007 Dave Robillard <http://drobilla.net> + * + * 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 + */ + +#ifndef LV2EVENTBUFFER_H +#define LV2EVENTBUFFER_H + +#include "lv2ext/lv2_event.h" +#include "lv2ext/lv2_event_helpers.h" + +namespace Ingen { + + +class LV2EventBuffer { +public: + LV2EventBuffer(size_t capacity); + ~LV2EventBuffer(); + + inline LV2_Event_Buffer* data() { return _data; } + inline const LV2_Event_Buffer* data() const { return _data; } + + inline void rewind() const { lv2_event_begin(&_iter, _data); } + + inline void reset() { + _latest_frames = 0; + _latest_subframes = 0; + _data->event_count = 0; + _data->size = 0; + rewind(); + } + + inline size_t event_count() const { return _data->event_count; } + inline uint32_t capacity() const { return _data->capacity; } + inline uint32_t size() const { return _data->size; } + inline uint32_t latest_frames() const { return _latest_frames; } + inline uint32_t latest_subframes() const { return _latest_subframes; } + + bool increment() const; + + bool is_valid() const; + + bool get_event(uint32_t* frames, + uint32_t* subframes, + uint16_t* type, + uint16_t* size, + uint8_t** data) const; + + bool append(uint32_t frames, + uint32_t subframes, + uint16_t type, + uint16_t size, + const uint8_t* data); + + bool append(const LV2_Event_Buffer* buf); + +private: + LV2_Event_Buffer* _data; ///< Contents + mutable LV2_Event_Iterator _iter; ///< Iterator into _data + uint32_t _latest_frames; ///< Latest time of all events (frames) + uint32_t _latest_subframes; ///< Latest time of all events (subframes) +}; + + +} // namespace Ingen + +#endif // LV2EVENTBUFFER_H |