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/ohos5.0/docs/zh-cn/application-dev/reference/apis-arkui/
H A Djs-apis-arkui-Prefetcher.md23 setDataSource(dataSource: IDataSourcePrefetching): void;
39 private dataSource?: IDataSourcePrefetching;
41 setDataSource(dataSource: IDataSourcePrefetching): void {
42 this.dataSource = dataSource;
46 this.dataSource?.prefetch(minVisible);
69 private dataSource?: IDataSourcePrefetching;
71 setDataSource(dataSource: IDataSourcePrefetching): void {
72 this.dataSource = dataSource;
76 this.dataSource?.prefetch(minVisible);
89 constructor(dataSource?: IDataSourcePrefetching);
[all …]
/ohos5.0/foundation/arkui/ace_engine/frameworks/bridge/declarative_frontend/ark_prefetcher/src/prefetcher/
H A DDataSourceObserver.ts58 private dataSource: IDataSource;
66 totalCount: this.dataSource.totalCount(),
149 totalCount: this.dataSource.totalCount(),
173 setDataSource(dataSource: IDataSource): void {
174 if (this.dataSource) {
175 this.dataSource.unregisterDataChangeListener(this);
177 this.dataSource = dataSource;
178 this.dataSource.registerDataChangeListener(this);
H A DFetchingDriver.ts45 private dataSource: IDataSourcePrefetching | null = dummyDataSource;
157 this.dataSource = ds ?? dummyDataSource;
158 this.dataSourceObserver.setDataSource(this.dataSource);
211 if (this.dataSource === dummyDataSource) {
243 const prefetchResponse = this.dataSource!.prefetch(itemIndex);
294 if (this.dataSource!.cancel) {
296 this.dataSource.cancel(itemIndex);
/ohos5.0/docs/zh-cn/application-dev/performance/
H A Davoid_time_consuming_operations_in_mainthread.md16 LazyForEach(this.dataSource, (item: ModelDetailVO) => {
24 if (item.id + 10 === this.dataSource.totalCount()) {
28 this.dataSource.addLastItem(data[i]);
65 LazyForEach(this.dataSource, (item: ModelDetailVO) => {
73 if (item.id + 10 === this.dataSource.totalCount()) {
75 taskpoolExecute(this.dataSource.totalCount()).then((data: ModelDetailVO[]) => {
77 this.dataSource.addLastItem(data[i]);
121 LazyForEach(this.dataSource, (item: ModelDetailVO) => {
129 if (item.id + 10 === this.dataSource.totalCount()) {
131 taskpoolExecute(this.dataSource.totalCount()).then((data: ModelDetailVO[]) => {
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H A Dwaterflow_optimization.md15 LazyForEach(this.dataSource, (item: number) => {
55 LazyForEach(this.dataSource, (item: number) => {
74 this.dataSource.addNewItems(100)
112 LazyForEach(this.dataSource, (item: number) => {
124 if (item + 20 == this.dataSource.totalCount()) {
125 this.dataSource.addNewItems(100)
157 LazyForEach(this.dataSource, (item: number) => {
164 if (item + 20 == this.dataSource.totalCount()) {
165 this.dataSource.addNewItems(100)
H A Dswiper_optimization.md169 …s-arkui/arkui-ts/ts-custom-component-lifecycle.md#abouttoappear)）时，先判断 dataSource 中该 index 的数据是否有数…
178 private dataSource: MyDataSource = new MyDataSource([]);
184 this.imageContent = this.dataSource.getData(this.myIndex)?.image;
185 if (!this.imageContent) { // 先判断dataSource中该index的数据是否有数据，若无数据则先进行资源加载
196 this.dataSource.addData(this.myIndex, { description: "" + this.myIndex, image: value })
275 dataSource: this.data
/ohos5.0/docs/en/application-dev/reference/apis-arkui/
H A Djs-apis-arkui-Prefetcher.md23 setDataSource(dataSource: IDataSourcePrefetching): void;
39 private dataSource?: IDataSourcePrefetching;
41 setDataSource(dataSource: IDataSourcePrefetching): void {
42 this.dataSource = dataSource;
46 this.dataSource?.prefetch(minVisible);
69 private dataSource?: IDataSourcePrefetching;
71 setDataSource(dataSource: IDataSourcePrefetching): void {
72 this.dataSource = dataSource;
76 this.dataSource?.prefetch(minVisible);
89 constructor(dataSource?: IDataSourcePrefetching)
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/ohos5.0/docs/zh-cn/application-dev/reference/apis-avcodec-kit/
H A D_a_v_source.md34 …_createwithdatasource) ([OH_AVDataSource](_o_h___a_v_data_source.md) \*dataSource) | 为用户自定义数据源的资源对…
62 OH_AVSource* OH_AVSource_CreateWithDataSource (OH_AVDataSource * dataSource)
75 | dataSource | 用户自定义数据源。 |
82 1. dataSource为nullptr；
83 2. dataSource->size == 0；
/ohos5.0/foundation/multimedia/av_codec/frameworks/native/capi/avsource/
H A Dnative_avsource.cpp34 explicit NativeAVDataSource(OH_AVDataSource *dataSource) in NativeAVDataSource() argument
35 : dataSource_(dataSource) in NativeAVDataSource()
95 struct OH_AVSource *OH_AVSource_CreateWithDataSource(OH_AVDataSource *dataSource) in OH_AVSource_CreateWithDataSource() argument
97 CHECK_AND_RETURN_RET_LOG(dataSource != nullptr, nullptr, "Input dataSource is nullptr"); in OH_AVSource_CreateWithDataSource()
98 …CHECK_AND_RETURN_RET_LOG(dataSource->size != 0, nullptr, "Datasource size must be greater than zer… in OH_AVSource_CreateWithDataSource()
99 …ared_ptr<NativeAVDataSource> nativeAVDataSource = std::make_shared<NativeAVDataSource>(dataSource); in OH_AVSource_CreateWithDataSource()
/ohos5.0/foundation/multimedia/media_foundation/engine/plugin/plugins/demuxer/wav_demuxer/
H A Dwav_demuxer_plugin.cpp50 int Sniff(const std::string& pluginName, std::shared_ptr<DataSource> dataSource);
72 ioContext_.dataSource = source; in SetDataSource()
73 if (ioContext_.dataSource != nullptr) { in SetDataSource()
74 ioContext_.dataSource->GetSize(fileSize_); in SetDataSource()
85 Status status = ioContext_.dataSource->ReadAt(0, buffer, WAV_HEAD_INFO_LEN); in GetMediaInfo()
134 Status retResult = ioContext_.dataSource->ReadAt(dataOffset_, outBufferPtr, WAV_PER_FRAME_SIZE); in ReadFrame()
213 int Sniff(const std::string& name, std::shared_ptr<DataSource> dataSource) in Sniff() argument
218 auto status = dataSource->ReadAt(0, buffer, PROBE_READ_LENGTH); in Sniff()
/ohos5.0/foundation/multimedia/av_codec/test/unittest/avsource_test/
H A Davsource_mock.h45 const std::shared_ptr<Media::IMediaDataSource> &dataSource);
46 static std::shared_ptr<AVSourceMock> CreateWithDataSource(OH_AVDataSource *dataSource);
54 explicit NativeAVDataSource(OH_AVDataSource *dataSource) in NativeAVDataSource() argument
55 : dataSource_(dataSource) in NativeAVDataSource()
/ohos5.0/docs/zh-cn/application-dev/reference/apis-arkui/arkui-ts/
H A Dts-container-waterflow.md643 dataSource: WaterFlowDataSource = new WaterFlowDataSource()
681 LazyForEach(this.dataSource, (item: number) => {
694 if (item + 20 == this.dataSource.totalCount()) {
696 this.dataSource.addLastItem()
768 LazyForEach(this.dataSource, (item: number) => {
835 dataCount: number = this.dataSource.totalCount()
975 LazyForEach(this.dataSource, (item: number) => {
994 if (last + 20 >= this.dataSource.totalCount()) {
996 this.dataSource.addLastItem()
1086 LazyForEach(this.dataSource, (item: number) => {
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/ohos5.0/foundation/multimedia/media_foundation/engine/plugin/plugins/demuxer/aac_demuxer/
H A Daac_demuxer_plugin.cpp41 int Sniff(const std::string& name, std::shared_ptr<DataSource> dataSource);
65 ioContext_.dataSource = source; in SetDataSource()
66 if (ioContext_.dataSource != nullptr) { in SetDataSource()
67 ioContext_.dataSource->GetSize(fileSize_); in SetDataSource()
90 auto result = ioContext_.dataSource->ReadAt(offset, buffer, static_cast<size_t>(readSize)); in DoReadFromSource()
254 ioContext_.dataSource.reset(); in Reset()
256 ioContext_.dataSource.reset(); in Reset()
417 int Sniff(const std::string& name, std::shared_ptr<DataSource> dataSource) in Sniff() argument
421 auto result = dataSource->ReadAt(0, buffer, static_cast<size_t>(PROBE_READ_LENGTH)); in Sniff()
/ohos5.0/foundation/multimedia/av_codec/test/unittest/avsource_test/capi/
H A Davsource_capi_mock_factory.cpp39 const std::shared_ptr<Media::IMediaDataSource> &dataSource) in CreateWithDataSource() argument
44 std::shared_ptr<AVSourceMock> AVSourceMockFactory::CreateWithDataSource(OH_AVDataSource *dataSource) in CreateWithDataSource() argument
46 OH_AVSource *source = OH_AVSource_CreateWithDataSource(dataSource); in CreateWithDataSource()
/ohos5.0/foundation/multimedia/av_codec/test/unittest/avsource_test/inner/
H A Davsource_inner_mock_factory.cpp39 const std::shared_ptr<Media::IMediaDataSource> &dataSource) in CreateWithDataSource() argument
41 std::shared_ptr<AVSource> source = AVSourceFactory::CreateWithDataSource(dataSource); in CreateWithDataSource()
48 std::shared_ptr<AVSourceMock> AVSourceMockFactory::CreateWithDataSource(OH_AVDataSource *dataSource) in CreateWithDataSource() argument
/ohos5.0/foundation/multimedia/media_foundation/engine/plugin/plugins/demuxer/minimp4_demuxer/
H A Dminimp4_demuxer_plugin.cpp46 int Sniff(const std::string &name, std::shared_ptr<DataSource> dataSource);
70 ioContext_.dataSource = source; in SetDataSource()
71 if (ioContext_.dataSource != nullptr) { in SetDataSource()
72 ioContext_.dataSource->GetSize(fileSize_); in SetDataSource()
110 ioContext_.dataSource.reset(); in Reset()
179 …auto result = ioContext_.dataSource->ReadAt(ioContext_.offset, buffer, static_cast<size_t>(readSiz… in DoReadFromSource()
246 if (fileSize_ == 0 || ioContext_.dataSource == nullptr) { in GetMediaInfo()
443 int Sniff(const std::string &name, std::shared_ptr<DataSource> dataSource) in Sniff() argument
450 …if (dataSource->ReadAt(MP4_HEADER_OFFSET, buffer, static_cast<size_t>(sizeof(m4aCheck))) != Status… in Sniff()
/ohos5.0/foundation/arkui/ace_engine/frameworks/bridge/declarative_frontend/engine/
H A DjsPrefetcher.js42 totalCount: this.dataSource.totalCount(),
139 setDataSource(dataSource) { argument
140 if (this.dataSource) {
141 this.dataSource.unregisterDataChangeListener(this);
143 this.dataSource = dataSource;
144 this.dataSource.registerDataChangeListener(this);
746 this.dataSource = dummyDataSource;
860 this.dataSource = ds ?? dummyDataSource;
908 if (this.dataSource === dummyDataSource) {
953 if (this.dataSource.cancel) {
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/ohos5.0/foundation/multimedia/media_lite/services/recorder_lite/impl/src/
H A Drecorder_impl.cpp91 sourceManager_[i].dataSource = nullptr; in RecorderImpl()
140 if (sourceManager_[i].dataSource != nullptr) { in ResetConfig()
141 delete sourceManager_[i].dataSource; in ResetConfig()
142 sourceManager_[i].dataSource = nullptr; in ResetConfig()
186 if (sourceManager_[i].dataSource == nullptr) { in GetFreeDataSourceID()
806 if (sourceManager_[i].dataSource != nullptr) { in PrepareDataSource()
1008 if (dataSourceManager->dataSource == nullptr) { in DataSourceProcess()
1048 if (sourceManager_[i].dataSource != nullptr) { in StartDataSource()
1066 if (sourceManager_[i].dataSource != nullptr) { in StopDataSource()
1339 if (sourceManager_[i].dataSource != nullptr) { in PauseDataSource()
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/ohos5.0/foundation/multimedia/av_codec/frameworks/native/avsource/
H A Davsource_impl.cpp68 const std::shared_ptr<Media::IMediaDataSource> &dataSource) in CreateWithDataSource() argument
75 int32_t ret = sourceImpl->InitWithDataSource(dataSource); in CreateWithDataSource()
122 int32_t AVSourceImpl::InitWithDataSource(const std::shared_ptr<Media::IMediaDataSource> &dataSource) in InitWithDataSource() argument
130 std::shared_ptr<MediaSource> mediaSource = std::make_shared<MediaSource>(dataSource); in InitWithDataSource()
/ohos5.0/foundation/multimedia/media_foundation/engine/plugin/plugins/minimp3_adapter/
H A Dminimp3_demuxer_plugin.cpp58 int Sniff(const std::string& pluginName, std::shared_ptr<DataSource> dataSource);
87 ioContext_.dataSource = source; in SetDataSource()
88 if (ioContext_.dataSource != nullptr) { in SetDataSource()
89 ioContext_.dataSource->GetSize(fileSize_); in SetDataSource()
106 …auto res = ioContext_.dataSource->ReadAt(ioContext_.offset, buffer, static_cast<size_t>(readSize)); in DoReadFromSource()
342 ioContext_.dataSource.reset(); in Reset()
670 int Sniff(const std::string& name, std::shared_ptr<DataSource> dataSource) in Sniff() argument
681 dataSource->GetSize(sourceSize); in Sniff()
686 status = dataSource->ReadAt(offset, buffer, static_cast<size_t>(readSize)); in Sniff()
/ohos5.0/foundation/multimedia/av_codec/test/nativedemo/avdemuxer/capi_demo/
H A Davsource_demo.cpp67 int32_t AVSourceDemo::CreateWithDataSource(OH_AVDataSource *dataSource) in CreateWithDataSource() argument
69 this->avsource_ = OH_AVSource_CreateWithDataSource(dataSource); in CreateWithDataSource()
/ohos5.0/foundation/multimedia/av_codec/interfaces/inner_api/native/
H A Davsource.h75 …ared_ptr<AVSource> CreateWithDataSource(const std::shared_ptr<Media::IMediaDataSource> &dataSource) in CreateWithDataSource() argument
100 …red_ptr<AVSource> CreateWithDataSource(const std::shared_ptr<Media::IMediaDataSource> &dataSource);
/ohos5.0/foundation/multimedia/media_foundation/engine/plugin/plugins/ffmpeg_adapter/demuxer/
H A Dffmpeg_demuxer_plugin.cpp64 int Sniff(const std::string& pluginName, std::shared_ptr<DataSource> dataSource);
191 ioContext_.dataSource = source; in SetDataSource()
536 if (ioContext && ioContext->dataSource) { in AVReadPacket()
539 …auto result = ioContext->dataSource->ReadAt(ioContext->offset, buffer, static_cast<size_t>(bufSize… in AVReadPacket()
590 if (ioContext->dataSource->GetSize(mediaDataSize) == Status::OK) { in AVSeek()
610 int Sniff(const std::string& pluginName, std::shared_ptr<DataSource> dataSource) in Sniff() argument
612 if (pluginName.empty() || !dataSource) { in Sniff()
623 if (dataSource->GetSize(fileSize) == Status::OK) { in Sniff()
630 if (bufData && dataSource->ReadAt(0, bufferInfo, bufferSize) == Status::OK) { in Sniff()
/ohos5.0/foundation/multimedia/media_library/frameworks/services/media_thumbnail/src/
H A Dthumbnail_utils.cpp321 if (dataSource->GetHeight() * dataSource->GetWidth() == 0) { in CenterScaleEx()
326 …float sourceScale = static_cast<float>(dataSource->GetHeight()) / static_cast<float>(dataSource->G… in CenterScaleEx()
351 if (!postProc.CenterScale(desiredSize, *dataSource)) { in CenterScaleEx()
2252 if (dataSource == nullptr) { in ScaleThumbnailFromSource()
2256 if (dataSource != nullptr && dataSource->IsHdr()) { in ScaleThumbnailFromSource()
2257 uint32_t ret = dataSource->ToSdr(); in ScaleThumbnailFromSource()
2264 dataSource->GetImageInfo(imageInfo); in ScaleThumbnailFromSource()
2274 data.source.SetPixelMapEx(dataSource); in ScaleThumbnailFromSource()
2276 data.source.SetPixelMap(dataSource); in ScaleThumbnailFromSource()
2279 …Size targetSize = ConvertDecodeSize(data, {dataSource->GetWidth(), dataSource->GetHeight()}, desir… in ScaleThumbnailFromSource()
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/ohos5.0/docs/zh-cn/application-dev/quick-start/
H A Darkts-reusable.md418 private dataSource = new MyDataSource<FriendMoment>();
573 @State dataSource: ListItemObject[] = [];
594 this.dataSource.pop();
604 this.dataSource.push(obj);
610 ForEach(this.dataSource, (item: ListItemObject) => {
862 dataSource: WaterFlowDataSource = new WaterFlowDataSource();
893 LazyForEach(this.dataSource, (item: number) => {
897 if (item + 20 == this.dataSource.totalCount()) {
899 this.dataSource.addLastItem();
933 private dataSource = new MyDataSource<Question>();
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