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72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/*****************************************************************************
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# #
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# uStreamer - Lightweight and fast MJPG-HTTP streamer. #
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# #
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# Copyright (C) 2018-2021 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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*****************************************************************************/
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#pragma once
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#include <assert.h>
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#define LIST_STRUCT(...) \
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__VA_ARGS__ *prev; \
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__VA_ARGS__ *next;
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#define LIST_ITERATE(_first, _item, ...) { \
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for (__typeof__(_first) _item = _first; _item;) { \
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__typeof__(_first) _next = _item->next; \
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__VA_ARGS__ \
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_item = _next; \
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} \
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}
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#define LIST_APPEND(_first, _item) { \
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if (_first == NULL) { \
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_first = _item; \
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} else { \
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__typeof__(_first) _last = _first; \
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for (; _last->next; _last = _last->next); \
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_item->prev = _last; \
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_last->next = _item; \
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} \
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}
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#define LIST_APPEND_C(_first, _item, _count) { \
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LIST_APPEND(_first, _item); \
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++(_count); \
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}
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#define LIST_REMOVE(_first, _item) { \
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if (_item->prev == NULL) { \
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_first = _item->next; \
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} else { \
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_item->prev->next = _item->next; \
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} \
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if (_item->next != NULL) { \
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_item->next->prev = _item->prev; \
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} \
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}
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#define LIST_REMOVE_C(_first, _item, _count) { \
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LIST_REMOVE(_first, _item); \
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assert((_count) >= 1); \
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--(_count); \
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}
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