/* * Copyright (c) 2021-2022 Alibaba Group. All rights reserved. * License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ #ifndef _VIDEO_MEM_H_ #define _VIDEO_MEM_H_ /* No special needs. */ #define VMEM_FLAG_NONE 0x00000000 /* Physical contiguous. */ #define VMEM_FLAG_CONTIGUOUS 0x00000001 /* Physical non contiguous. */ #define VMEM_FLAG_NON_CONTIGUOUS 0x00000002 /* Need 32bit address. */ #define VMEM_FLAG_4GB_ADDR 0x00000004 typedef enum _VmemStatus { VMEM_STATUS_OK = 0, VMEM_STATUS_ERROR = -1, /* general error */ VMEM_STATUS_NO_MEMORY = -2, /* not enough memory to allocate buffer */ } VmemStatus; typedef struct _VmemParams { int size; int flags; unsigned int phy_address; void *vir_address; int fd; } VmemParams; VmemStatus VMEM_create(void **vmem); VmemStatus VMEM_allocate(void *vmem, VmemParams *params); VmemStatus VMEM_mmap(void *vmem, VmemParams *params); VmemStatus VMEM_free(void *vmem, VmemParams *params); VmemStatus VMEM_destroy(void *vmem); VmemStatus VMEM_export(void *vmem, VmemParams *params); VmemStatus VMEM_import(void *vmem, VmemParams *params); VmemStatus VMEM_release(void *vmem, VmemParams *params); #endif /* !_VIDEO_MEM_H_ */