1 /*
2 * Copyright (C) 2022 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 #include "payload_data/delete_object_data.h"
16 #include "media_log.h"
17 #include "media_mtp_utils.h"
18 #include "mtp_packet_tools.h"
19 #include "mtp_storage_manager.h"
20 using namespace std;
21 namespace OHOS {
22 namespace Media {
23 static constexpr int32_t PARSER_PARAM_SUM = 1;
24
DeleteObjectData(std::shared_ptr<MtpOperationContext> & context)25 DeleteObjectData::DeleteObjectData(std::shared_ptr<MtpOperationContext> &context)
26 : PayloadData(context)
27 {
28 }
29
~DeleteObjectData()30 DeleteObjectData::~DeleteObjectData()
31 {
32 }
33
Parser(const std::vector<uint8_t> & buffer,int32_t readSize)34 int DeleteObjectData::Parser(const std::vector<uint8_t> &buffer, int32_t readSize)
35 {
36 if ((context_ == nullptr) || (!MtpStorageManager::GetInstance()->HasStorage())) {
37 MEDIA_ERR_LOG("DeleteObjectData::parser null or storage");
38 return MTP_ERROR_CONTEXT_IS_NULL;
39 }
40
41 int32_t parameterCount = (readSize - MTP_CONTAINER_HEADER_SIZE) / MTP_PARAMETER_SIZE;
42 if (parameterCount < PARSER_PARAM_SUM) {
43 MEDIA_ERR_LOG("DeleteObjectData::parser paramCount=%{public}u, needCount=%{public}d",
44 parameterCount, PARSER_PARAM_SUM);
45 return MTP_ERROR_PACKET_INCORRECT;
46 }
47
48 size_t offset = MTP_CONTAINER_HEADER_SIZE;
49 context_->handle = MtpPacketTool::GetUInt32(buffer, offset);
50 return MTP_SUCCESS;
51 }
52
Maker(std::vector<uint8_t> & outBuffer)53 int DeleteObjectData::Maker(std::vector<uint8_t> &outBuffer)
54 {
55 return MTP_SUCCESS;
56 }
57
CalculateSize()58 uint32_t DeleteObjectData::CalculateSize()
59 {
60 std::vector<uint8_t> tmpVar;
61
62 int res = Maker(tmpVar);
63 if (res != MTP_SUCCESS) {
64 return res;
65 }
66
67 uint32_t size = tmpVar.size();
68 return size;
69 }
70 } // namespace Media
71 } // namespace OHOS