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60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Based on wlroots/include/types/wlr_buffer.c
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*
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* Copyright (c) 2017, 2018 Drew DeVault
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* Copyright (c) 2018-2021 Simon Ser, Simon Zeni
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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
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* all 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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#ifndef __LABWC_BUFFER_H
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#define __LABWC_BUFFER_H
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#include "labwc.h"
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/**
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* A read-only buffer that holds a data pointer.
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*
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* This is suitable for passing raw pixel data to a function that accepts a
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* wlr_buffer.
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*/
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struct lab_data_buffer {
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struct wlr_buffer base;
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const void *data;
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uint32_t format;
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size_t stride;
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void *saved_data;
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};
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/**
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* Wraps a read-only data pointer into a wlr_buffer. The data pointer may be
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* accessed until readonly_data_buffer_drop() is called.
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*/
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struct lab_data_buffer *buffer_create(uint32_t format, size_t stride,
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uint32_t width, uint32_t height, const void *data);
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/**
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* Drops ownership of the buffer (see wlr_buffer_drop() for more details) and
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* perform a copy of the data pointer if a consumer still has the buffer locked.
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*/
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bool buffer_drop(struct lab_data_buffer *buffer);
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#endif /* __LABWC_BUFFER_H */
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