mirror of
https://github.com/thead-yocto-mirror/video_memory
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73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/*
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* Copyright (c) 2021-2022 Alibaba Group. All rights reserved.
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* License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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#ifndef _VIDEO_MEM_H_
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#define _VIDEO_MEM_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* No special needs. */
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#define VMEM_FLAG_NONE 0x00000000
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/* Physical contiguous. */
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#define VMEM_FLAG_CONTIGUOUS 0x00000001
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/* Physical non contiguous. */
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#define VMEM_FLAG_NON_CONTIGUOUS 0x00000002
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/* Need 32bit address. */
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#define VMEM_FLAG_4GB_ADDR 0x00000004
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/* CMA priority */
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#define VMEM_FLAG_CMA 0x00000008
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/* Use VI reserved memory */
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#define VMEM_FLAG_VI 0x00000010
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/* Alloc rsvmem pool region id should be 0~15 */
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#define SET_ALLOC_FLAG_REGION(flag, region_id) (flag & 0x00ffffff) | (region_id << 24)
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#define GET_ALLOC_FLAG_REGION(flag) (flag >> 24)
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typedef enum _VmemStatus
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{
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VMEM_STATUS_OK = 0,
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VMEM_STATUS_ERROR = -1, /* general error */
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VMEM_STATUS_NO_MEMORY = -2, /* not enough memory to allocate buffer */
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} VmemStatus;
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typedef struct _VmemParams
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{
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int size;
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int flags;
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unsigned int phy_address;
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void *vir_address;
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int fd;
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} VmemParams;
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VmemStatus VMEM_create(void **vmem);
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VmemStatus VMEM_allocate(void *vmem, VmemParams *params);
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VmemStatus VMEM_mmap(void *vmem, VmemParams *params);
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VmemStatus VMEM_free(void *vmem, VmemParams *params);
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VmemStatus VMEM_destroy(void *vmem);
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VmemStatus VMEM_export(void *vmem, VmemParams *params);
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VmemStatus VMEM_import(void *vmem, VmemParams *params);
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VmemStatus VMEM_release(void *vmem, VmemParams *params);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !_VIDEO_MEM_H_ */
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