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
16 #include "avsession_pixel_map_adapter.h"
17 #include "avsession_log.h"
18
19 namespace OHOS::AVSession {
20 namespace {
21 constexpr int32_t MAX_PIXEL_BUFFER_SIZE = 200 * 1024;
22 constexpr uint8_t IMAGE_BYTE_SIZE = 2;
23 constexpr uint8_t DATA_BYTE_SIZE = 4;
24 constexpr uint8_t OFFSET_BYTE = 8;
25 }
26
27 int32_t AVSessionPixelMapAdapter::originalPixelMapBytes_ = 0;
28 int32_t AVSessionPixelMapAdapter::originalWidth_ = 0;
29 int32_t AVSessionPixelMapAdapter::originalHeight_ = 0;
30
ConvertFromInner(const std::shared_ptr<AVSessionPixelMap> & innerPixelMap)31 std::shared_ptr<Media::PixelMap> AVSessionPixelMapAdapter::ConvertFromInner(
32 const std::shared_ptr<AVSessionPixelMap>& innerPixelMap)
33 {
34 CHECK_AND_RETURN_RET_LOG(innerPixelMap != nullptr, nullptr, "invalid parameter");
35 CHECK_AND_RETURN_RET_LOG(innerPixelMap->GetInnerImgBuffer().size() > IMAGE_BYTE_SIZE, nullptr,
36 "innerPixelMap innerImgBuffer size less than 2");
37
38 std::vector<uint8_t> innerImgBuffer = innerPixelMap->GetInnerImgBuffer();
39 innerPixelMap->Clear();
40 uint16_t imgBufferSize = static_cast<uint16_t>(innerImgBuffer[0]);
41 imgBufferSize = (imgBufferSize << OFFSET_BYTE) + innerImgBuffer[1];
42
43 if (imgBufferSize > sizeof(Media::ImageInfo)) {
44 SLOGE("imgBufferSize greater than %{public}zu", sizeof(Media::ImageInfo));
45 return nullptr;
46 }
47
48 Media::ImageInfo imageInfo;
49 std::copy(innerImgBuffer.data() + IMAGE_BYTE_SIZE,
50 innerImgBuffer.data() + IMAGE_BYTE_SIZE + imgBufferSize, reinterpret_cast<uint8_t*>(&imageInfo));
51
52 const std::shared_ptr<Media::PixelMap>& pixelMap = std::make_shared<Media::PixelMap>();
53 pixelMap->SetImageInfo(imageInfo);
54
55 uint32_t dataSize = 0;
56 for (uint8_t i = 0; i < DATA_BYTE_SIZE; i++) {
57 uint32_t tmpValue = innerImgBuffer[IMAGE_BYTE_SIZE + imgBufferSize + i];
58 dataSize += (tmpValue << (OFFSET_BYTE * (DATA_BYTE_SIZE - i - 1)));
59 }
60 void* dataAddr = static_cast<void*>(innerImgBuffer.data() + IMAGE_BYTE_SIZE + imgBufferSize + DATA_BYTE_SIZE);
61 pixelMap->SetPixelsAddr(dataAddr, nullptr, dataSize, Media::AllocatorType::CUSTOM_ALLOC, nullptr);
62
63 Media::InitializationOptions options;
64 options.alphaType = imageInfo.alphaType;
65 options.pixelFormat = imageInfo.pixelFormat;
66 options.scaleMode = OHOS::Media::ScaleMode::CENTER_CROP;
67 options.size.width = originalWidth_;
68 options.size.height = originalHeight_;
69 options.editable = true;
70 auto result = Media::PixelMap::Create(*pixelMap, options);
71 if (originalPixelMapBytes_ > MAX_PIXEL_BUFFER_SIZE) {
72 float scaleRatio = static_cast<float>(originalPixelMapBytes_) / static_cast<float>(MAX_PIXEL_BUFFER_SIZE);
73 pixelMap->scale(scaleRatio, scaleRatio);
74 }
75 return std::move(result);
76 }
77
ConvertToInner(const std::shared_ptr<Media::PixelMap> & pixelMap)78 std::shared_ptr<AVSessionPixelMap> AVSessionPixelMapAdapter::ConvertToInner(
79 const std::shared_ptr<Media::PixelMap>& pixelMap)
80 {
81 CHECK_AND_RETURN_RET_LOG(pixelMap != nullptr, nullptr, "invalid parameter");
82 originalPixelMapBytes_ = pixelMap->GetByteCount();
83 originalWidth_ = pixelMap->GetWidth();
84 originalHeight_ = pixelMap->GetHeight();
85 if (originalPixelMapBytes_ > MAX_PIXEL_BUFFER_SIZE) {
86 float scaleRatio = static_cast<float>(MAX_PIXEL_BUFFER_SIZE) / static_cast<float>(originalPixelMapBytes_);
87 pixelMap->scale(scaleRatio, scaleRatio);
88 }
89 std::shared_ptr<AVSessionPixelMap> innerPixelMap = std::make_shared<AVSessionPixelMap>();
90 std::vector<uint8_t> imgBuffer;
91 Media::ImageInfo imageInfo;
92 pixelMap->GetImageInfo(imageInfo);
93 const auto* buffer = reinterpret_cast<uint8_t*>(&imageInfo);
94 uint16_t imageInfoSize = static_cast<uint16_t>(sizeof(Media::ImageInfo));
95 int32_t pixelDataSize = pixelMap->GetByteCount();
96 size_t bufferSize = IMAGE_BYTE_SIZE + imageInfoSize + DATA_BYTE_SIZE + pixelDataSize;
97 imgBuffer.reserve(bufferSize);
98 imgBuffer.insert(imgBuffer.begin(), (imageInfoSize & 0xFF00) >> OFFSET_BYTE);
99 imgBuffer.insert(imgBuffer.begin() + imgBuffer.size(), (imageInfoSize & 0x00FF));
100 imgBuffer.insert(imgBuffer.begin() + imgBuffer.size(), buffer, buffer + imageInfoSize);
101
102 uint32_t computedValue = 0xFF000000;
103 for (uint8_t i = 0; i < DATA_BYTE_SIZE; i++) {
104 uint8_t tmpValue = ((pixelDataSize & computedValue) >> (OFFSET_BYTE * (DATA_BYTE_SIZE - i - 1)));
105 imgBuffer.insert(imgBuffer.begin() + imgBuffer.size(), tmpValue);
106 computedValue = computedValue >> OFFSET_BYTE;
107 }
108 imgBuffer.insert(imgBuffer.begin() + imgBuffer.size(), pixelMap->GetPixels(),
109 pixelMap->GetPixels() + pixelDataSize);
110 innerPixelMap->SetInnerImgBuffer(imgBuffer);
111 return innerPixelMap;
112 }
113 } // OHOS::AVSession