Lv2Evbuf.h

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/*
 * Lv2Evbuf.h - Lv2 event buffer definitions
 *
 * Copyright (c) 2019-2020 Johannes Lorenz <jlsf2013$users.sourceforge.net, $=@>
 *
 * This file is part of LMMS - https://lmms.io
 *
 * This program 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.
 *
 * This program 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 more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
 */
 
/*
 * The original code was written by David Robillard <http://drobilla.net>
 * Original version: 6f22ee0 from https://github.com/drobilla/jalv.git
 * Minor changes have been done, but no functional changes.
 * Considering this as an "external library", the identifiers do not need to
 * match the LMMS coding conventions.
 */
 
#ifndef LMMS_LV2_EVBUF_H
#define LMMS_LV2_EVBUF_H
 
#include "lmmsconfig.h"
 
#ifdef LMMS_HAVE_LV2
 
#include <cstdint>
 
 
namespace lmms
{
 

using LV2_Evbuf = struct LV2_Evbuf_Impl;

struct LV2_Evbuf_Iterator
{
    LV2_Evbuf* evbuf;
    uint32_t offset;
};

LV2_Evbuf*
lv2_evbuf_new(uint32_t capacity, uint32_t atom_Chunk, uint32_t atom_Sequence);

void
lv2_evbuf_free(LV2_Evbuf* evbuf);

void
lv2_evbuf_reset(LV2_Evbuf* evbuf, bool input);

uint32_t
lv2_evbuf_get_size(LV2_Evbuf* evbuf);

void*
lv2_evbuf_get_buffer(LV2_Evbuf* evbuf);

LV2_Evbuf_Iterator
lv2_evbuf_begin(LV2_Evbuf* evbuf);

LV2_Evbuf_Iterator
lv2_evbuf_end(LV2_Evbuf* evbuf);

bool
lv2_evbuf_is_valid(LV2_Evbuf_Iterator iter);

LV2_Evbuf_Iterator
lv2_evbuf_next(LV2_Evbuf_Iterator iter);

bool
lv2_evbuf_get(  LV2_Evbuf_Iterator iter,
                uint32_t* frames,
                uint32_t* type,
                uint32_t* size,
                uint8_t** data);

bool
lv2_evbuf_write(    LV2_Evbuf_Iterator* iter,
                    uint32_t frames,
                    uint32_t type,
                    uint32_t size,
                    const uint8_t* data);
 
 
} // namespace lmms
 
#endif // LMMS_HAVE_LV2
 
#endif // LMMS_LV2_EVBUF_H