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53 lines
2.1 KiB
C
53 lines
2.1 KiB
C
/*
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* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2013-2024 OpenMV, LLC.
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*
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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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*
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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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*
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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
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* THE SOFTWARE.
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*
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* Interface for using extra frame buffer RAM as a stack.
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*/
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#ifndef __FB_ALLOC_H__
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#define __FB_ALLOC_H__
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#include <stdint.h>
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#define FB_ALLOC_NO_HINT 0
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#define FB_ALLOC_PREFER_SPEED 1
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#define FB_ALLOC_PREFER_SIZE 2
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#define FB_ALLOC_CACHE_ALIGN 4
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#ifndef OMV_ALLOC_ALIGNMENT
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#define OMV_ALLOC_ALIGNMENT (OMV_CACHE_LINE_SIZE)
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#endif
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char *fb_alloc_sp();
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void fb_alloc_fail();
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void fb_alloc_init0();
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uint32_t fb_avail();
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void fb_alloc_mark();
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void fb_alloc_free_till_mark();
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void fb_alloc_mark_permanent(); // tag memory that should not be popped on exception
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void fb_alloc_free_till_mark_past_mark_permanent(); // frees past marked permanent allocations
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void *fb_alloc(uint32_t size, int hints);
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void *fb_alloc0(uint32_t size, int hints);
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void *fb_alloc_all(uint32_t *size, int hints); // returns pointer and sets size
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void *fb_alloc0_all(uint32_t *size, int hints); // returns pointer and sets size
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void fb_free();
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void fb_free_all();
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#endif /* __FF_ALLOC_H__ */
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