Native API Differences
Compared with earlier versions, OpenHarmony 4.0.8.5 has the following API changes in its native APIs: *
Standard System API Changes
| Module | API | Change Type | Change Description |
|---|---|---|---|
| avmuxer | OH_AVMuxer *OH_AVMuxer_Create(int32_t fd, OH_AVOutputFormat format); | Added | This API is added to create an OH_AVMuxer instance. |
| avmuxer | OH_AVErrCode OH_AVMuxer_SetRotation(OH_AVMuxer *muxer, int32_t rotation); | Added | This API is added to set the rotation angle of an output video. |
| avmuxer | OH_AVErrCode OH_AVMuxer_AddTrack(OH_AVMuxer *muxer, int32_t *trackIndex, OH_AVFormat *trackFormat); | Added | This API is added to add a media track. |
| avmuxer | OH_AVErrCode OH_AVMuxer_Start(OH_AVMuxer *muxer); | Added | This API is added to start encapsulation. |
| avmuxer | OH_AVErrCode OH_AVMuxer_WriteSample(OH_AVMuxer *muxer, uint32_t trackIndex, OH_AVMemory *sample, OH_AVCodecBufferAttr info); | Added | This API is added to write data to the muxer. |
| avmuxer | OH_AVErrCode OH_AVMuxer_Stop(OH_AVMuxer *muxer); | Added | This API is added to stop encapsulation. |
| avmuxer | OH_AVErrCode OH_AVMuxer_Destroy(OH_AVMuxer *muxer); | Added | This API is added to destroy an OH_AVMuxer instance. |
| avsource | OH_AVSource *OH_AVSource_CreateWithURI(char *uri); | Added | This API is added to create an OH_AVSource instance based on a URI. |
| avsource | OH_AVSource *OH_AVSource_CreateWithFD(int32_t fd, int64_t offset, int64_t size); | Added | This API is added to create an OH_AVSource instance based on a file descriptor (FD). |
| avsource | OH_AVErrCode OH_AVSource_Destroy(OH_AVSource *source); | Added | This API is added to destroy an OH_AVSource instance. |
| avsource | OH_AVFormat *OH_AVSource_GetSourceFormat(OH_AVSource *source); | Added | This API is added to obtain source information. |
| avsource | OH_AVFormat *OH_AVSource_GetTrackFormat(OH_AVSource *source, uint32_t trackCount); | Added | This API is added to obtain track information. |
| avdemuxer | OH_AVDemuxer *OH_AVDemuxer_CreateWithSource(OH_AVSource *source); | Added | This API is added to create an OH_AVDemuxer instance based on source information. |
| avdemuxer | OH_AVErrCode OH_AVDemuxer_Destroy(OH_AVDemuxer *demuxer); | Added | This API is added to destroy an OH_AVDemuxer instance. |
| avdemuxer | OH_AVErrCode OH_AVDemuxer_SelectTrackByID(OH_AVDemuxer *demuxer, uint32_t trackIndex); | Added | This API is added to select a track, from which the demuxer reads data. |
| avdemuxer | OH_AVErrCode OH_AVDemuxer_UnselectTrackByID(OH_AVDemuxer *demuxer, uint32_t trackIndex); | Added | This API is added to deselect a track. |
| avdemuxer | OH_AVErrCode OH_AVDemuxer_ReadSample(OH_AVDemuxer *demuxer, uint32_t trackIndex, OH_AVMemory *sample, OH_AVCodecBufferAttr *info); | Added | This API is added to read the frame from a track specified by trackIndex. |
| avdemuxer | OH_AVErrCode OH_AVDemuxer_SeekToTime(OH_AVDemuxer *demuxer, int64_t millisecond, OH_AVSeekMode mode); | Added | This API is added to seek to the specified time. |
| avcapability | OH_AVCapability *OH_AVCodec_GetCapability(const char *mime, bool isEncoder); | Added | This API is added to obtain a handle to the codec capability recommended by the system. |
| avcapability | OH_AVCapability *OH_AVCodec_GetCapabilityByCategory(const char *mime, bool isEncoder, OH_AVCodecCategory category); | Added | This API is added to obtain a handle to the codec capability by category, which can be a hardware codec or software codec. |
| avcapability | bool OH_AVCapability_IsHardware(OH_AVCapability *capability); | Added | This API is added to check whether a codec capability instance describes a hardware codec. |
| avcapability | const char *OH_AVCapability_GetName(OH_AVCapability *capability); | Added | This API is added to obtain the codec name. |
| avcapability | int32_t OH_AVCapability_GetMaxSupportedInstances(OH_AVCapability *capability); | Added | This API is added to obtain the maximum number of codec instances supported by a codec. |
| avcapability | OH_AVErrCode OH_AVCapability_GetEncoderBitrateRange(OH_AVCapability *capability, OH_AVRange *bitrateRange); | Added | This API is added to obtain the bit rate range supported by an encoder. |
| avcapability | bool OH_AVCapability_IsEncoderBitrateModeSupported(OH_AVCapability *capability, OH_BitrateMode bitrateMode); | Added | This API is added to check whether a specific bit rate mode is supported. |
| avcapability | OH_AVErrCode OH_AVCapability_GetEncoderQualityRange(OH_AVCapability *capability, OH_AVRange *qualityRange); | Added | This API is added to obtain the quality range supported by an encoder. |
| avcapability | OH_AVErrCode OH_AVCapability_GetEncoderComplexityRange(OH_AVCapability *capability, OH_AVRange *complexityRange); | Added | This API is added to obtain the complexity range supported by an encoder. |
| avcapability | OH_AVErrCode OH_AVCapability_GetAudioSupportedSampleRates(OH_AVCapability *capability, const int32_t **sampleRates, uint32_t *sampleRateNum); | Added | This API is added to obtain the sampling rates supported by an audio codec. |
| avcapability | OH_AVErrCode OH_AVCapability_GetAudioChannelCountRange(OH_AVCapability *capability, OH_AVRange *channelCountRange); | Added | This API is added to obtain the count range of audio channels supported by an audio codec. |
| avcapability | OH_AVErrCode OH_AVCapability_GetVideoWidthAlignment(OH_AVCapability *capability, int32_t *widthAlignment); | Added | This API is added to obtain the video width alignment. |
| avcapability | OH_AVErrCode OH_AVCapability_GetVideoHeightAlignment(OH_AVCapability *capability, int32_t *heightAlignment); | Added | This API is added to obtain the video height alignment. |
| avcapability | OH_AVErrCode OH_AVCapability_GetVideoWidthRangeForHeight(OH_AVCapability *capability, int32_t height, OH_AVRange *widthRange); | Added | This API is added to obtain the video width range based on a given height. |
| avcapability | OH_AVErrCode OH_AVCapability_GetVideoHeightRangeForWidth(OH_AVCapability *capability, int32_t width, OH_AVRange *heightRange); | Added | This API is added to obtain the video height range based on a given width. |
| avcapability | OH_AVErrCode OH_AVCapability_GetVideoWidthRange(OH_AVCapability *capability, OH_AVRange *widthRange); | Added | This API is added to obtain the video width range. |
| avcapability | OH_AVErrCode OH_AVCapability_GetVideoHeightRange(OH_AVCapability *capability, OH_AVRange *heightRange); | Added | This API is added to obtain the video height range. |
| avcapability | bool OH_AVCapability_IsVideoSizeSupported(OH_AVCapability *capability, int32_t width, int32_t height); | Added | This API is added to check whether a video size is supported. |
| avcapability | OH_AVErrCode OH_AVCapability_GetVideoFrameRateRange(OH_AVCapability *capability, OH_AVRange *frameRateRange); | Added | This API is added to obtain the video frame rate range. |
| avcapability | OH_AVErrCode OH_AVCapability_GetVideoFrameRateRangeForSize(OH_AVCapability *capability, int32_t width, int32_t height, OH_AVRange *frameRateRange); | Added | This API is added to obtain the video frame rate range based on a given size. |
| avcapability | bool OH_AVCapability_AreVideoSizeAndFrameRateSupported(OH_AVCapability *capability, int32_t width, int32_t height, int32_t frameRate); | Added | This API is added to check whether the combination of a video size and frame rate is supported. |
| avcapability | OH_AVErrCode OH_AVCapability_GetVideoSupportedPixelFormats(OH_AVCapability *capability, const int32_t **pixFormats, uint32_t *pixFormatNum); | Added | This API is added to obtain the video pixel formats supported. |
| avcapability | OH_AVErrCode OH_AVCapability_GetSupportedProfiles(OH_AVCapability *capability, const int32_t **profiles, uint32_t *profileNum); | Added | This API is added to obtain the profiles supported. |
| avcapability | OH_AVErrCode OH_AVCapability_GetSupportedLevelsForProfile(OH_AVCapability *capability, int32_t profile, const int32_t **levels,uint32_t *levelNum); | Added | This API is added to obtain the codec levels supported by a profile. |
| avcapability | bool OH_AVCapability_AreProfileAndLevelSupported(OH_AVCapability *capability, int32_t profile, int32_t level); | Added | This API is added to check whether the combination of a profile and level is supported. |
| avformat | struct OH_AVFormat *OH_AVFormat_CreateAudioFormat(const char *mimeType, int32_t sampleRate, int32_t channelCount); | Added | This API is added to create an OH_AVFormat instance for an audio track (used in avmuxer). |
| avformat | struct OH_AVFormat *OH_AVFormat_CreateVideoFormat(const char *mimeType, int32_t width, int32_t height); | Added | This API is added to create an OH_AVFormat instance for a video track (used in avmuxer). |
| avmemory | OH_AVMemory *OH_AVMemory_Create(int32_t size); | Added | This API is added to create an OH_AVMemory instance. |
| avmemory | OH_AVErrCode OH_AVMemory_Destroy(struct OH_AVMemory *mem); | Added | This API is added to destroy an OH_AVMemory instance. |
| avcodec | OH_AVErrCode OH_AudioDecoder_IsValid(OH_AVCodec *codec, bool *isValid); | Added | This API is added to check whether a codec instance is valid. It is used for fault rectification. |
| avcodec | OH_AVErrCode OH_AudioEncoder_IsValid(OH_AVCodec *codec, bool *isValid); | Added | This API is added to check whether a codec instance is valid. It is used for fault rectification. |
| avcodec | OH_AVErrCode OH_VideoDecoder_IsValid(OH_AVCodec *codec, bool *isValid); | Added | This API is added to check whether a codec instance is valid. |
| avcodec | OH_AVErrCode OH_VideoEncoder_IsValid(OH_AVCodec *codec, bool *isValid); | Added | This API is added to check whether a codec instance is valid. |
| avcodec | OH_AVErrCode OH_VideoEncoder_PushInputData(OH_AVCodec *codec, uint32_t index, OH_AVCodecBufferAttr attr); | Added | This API is added to push the input buffer filled with data to a video encoder. |
| avcodec | OH_AVFormat *OH_VideoEncoder_GetInputDescription(OH_AVCodec *codec); | Added | This API is added to obtain the description received by a video encoder. |