1 /*
2 * Copyright (c) 2023-2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <buffer_handle.h>
17 #include <cstdlib>
18 #include <securec.h>
19 #include <stdint.h>
20 #include <unistd.h>
21
22 #include "buffer_handle_utils.h"
23 #include "camera_log.h"
24 #include "dps_metadata_info.h"
25
26
27 namespace OHOS {
28 namespace CameraStandard {
29 #define RESERVE_MAX_SIZE 1024
30
CameraAllocateBufferHandle(uint32_t reserveFds,uint32_t reserveInts)31 BufferHandle *CameraAllocateBufferHandle(uint32_t reserveFds, uint32_t reserveInts)
32 {
33 CHECK_ERROR_RETURN_RET_LOG(reserveFds > RESERVE_MAX_SIZE || reserveInts > RESERVE_MAX_SIZE, nullptr,
34 "CameraAllocateBufferHandle reserveFds or reserveInts too lager");
35 size_t handleSize = sizeof(BufferHandle) + (sizeof(int32_t) * (reserveFds + reserveInts));
36 BufferHandle *handle = static_cast<BufferHandle *>(malloc(handleSize));
37 if (handle != nullptr) {
38 (void)memset_s(handle, handleSize, 0, handleSize);
39 handle->fd = -1;
40 for (uint32_t i = 0; i < reserveFds; i++) {
41 handle->reserve[i] = -1;
42 }
43 handle->reserveFds = reserveFds;
44 handle->reserveInts = reserveInts;
45 } else {
46 MEDIA_ERR_LOG("InitBufferHandle malloc %zu failed", handleSize);
47 }
48 return handle;
49 }
50
CameraFreeBufferHandle(BufferHandle * handle)51 int32_t CameraFreeBufferHandle(BufferHandle *handle)
52 {
53 CHECK_ERROR_RETURN_RET_LOG(handle == nullptr, 0, "CameraFreeBufferHandle with nullptr handle");
54 if (handle->fd >= 0) {
55 close(handle->fd);
56 handle->fd = -1;
57 }
58 const uint32_t reserveFds = handle->reserveFds;
59 for (uint32_t i = 0; i < reserveFds; i++) {
60 if (handle->reserve[i] >= 0) {
61 close(handle->reserve[i]);
62 handle->reserve[i] = -1;
63 }
64 }
65 free(handle);
66 return 0;
67 }
68
CameraCloneBufferHandle(const BufferHandle * handle)69 BufferHandle *CameraCloneBufferHandle(const BufferHandle *handle)
70 {
71 CHECK_ERROR_RETURN_RET_LOG(handle == nullptr, nullptr, "CameraCloneBufferHandle with nullptr handle");
72 BufferHandle *newHandle = CameraAllocateBufferHandle(handle->reserveFds, handle->reserveInts);
73 CHECK_ERROR_RETURN_RET_LOG(newHandle == nullptr, nullptr,
74 "CameraCloneBufferHandle alloc buffer failed, newHandle is nullptr");
75 if (handle->fd == -1) {
76 newHandle->fd = handle->fd;
77 } else {
78 newHandle->fd = dup(handle->fd);
79 if (newHandle->fd == -1) {
80 MEDIA_ERR_LOG("CameraCloneBufferHandle dup failed");
81 CameraFreeBufferHandle(newHandle);
82 return nullptr;
83 }
84 }
85 newHandle->width = handle->width;
86 newHandle->stride = handle->stride;
87 newHandle->height = handle->height;
88 newHandle->size = handle->size;
89 newHandle->format = handle->format;
90 newHandle->usage = handle->usage;
91 newHandle->phyAddr = handle->phyAddr;
92
93 // 此处当前缺乏reserveFds中各个fd的dup，原因在于surfacebuffer中reserveFds fd不合法。且相机流程中reserveFds暂时无用
94
95 if (handle->reserveInts == 0) {
96 MEDIA_INFO_LOG("There is no reserved integer value in old handle, no need to copy");
97 return newHandle;
98 }
99
100 if (memcpy_s(&newHandle->reserve[newHandle->reserveFds], sizeof(int32_t) * newHandle->reserveInts,
101 &handle->reserve[handle->reserveFds], sizeof(int32_t) * handle->reserveInts) != EOK) {
102 MEDIA_ERR_LOG("CameraCloneBufferHandle memcpy_s failed");
103 CameraFreeBufferHandle(newHandle);
104 return nullptr;
105 }
106 return newHandle;
107 }
108
109 } // namespace CameraStandard
110 } // namespace OHOS