harmony 鸿蒙native_avcapability.h

2023-10-30
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native_avcapability.h

Overview

The native_avcapability.h file declares the native APIs used to query the codec capability.

Since

Related Modules

AVCapability

Summary

Structs

Name	Description
OH_AVRange	Defines the value range, which contains the minimum value and maximum value.

Types

Name	Description
OH_BitrateMode	Defines an enum that enumerates the bit rate modes of an encoder.
OH_AVRange	Defines a struct for the value range, which contains the minimum value and maximum value.
OH_AVCodecCategory	Defines an enum that enumerates the codec categories.

Enums

Name	Description
OH_BitrateMode {     BITRATE_MODE_CBR = 0,     BITRATE_MODE_VBR = 1,     BITRATE_MODE_CQ = 2 }	Enumerates the bit rate modes of an encoder.
OH_AVCodecCategory {     HARDWARE = 0,     SOFTWARE }	Enumerates the codec categories.

Functions

Name	Description
OH_AVCodec_GetCapability (const char mime, bool isEncoder)	Obtains the codec capability recommended by the system.
OH_AVCodec_GetCapabilityByCategory (const char mime, bool isEncoder, OH_AVCodecCategory category)	Obtains the codec capability by category, which can be a hardware codec or software codec.
OH_AVCapability_IsHardware (OH_AVCapability *capability)	Checks whether a codec capability instance describes a hardware codec.
OH_AVCapability_GetName (OH_AVCapability capability)	Obtains the codec name.
OH_AVCapability_GetMaxSupportedInstances (OH_AVCapability *capability)	Obtains the maximum number of codec instances supported by a codec.
OH_AVCapability_GetEncoderBitrateRange (OH_AVCapability capability, OH_AVRange bitrateRange)	Obtains the bit rate range supported by an encoder.
OH_AVCapability_IsEncoderBitrateModeSupported (OH_AVCapability *capability, OH_BitrateMode bitrateMode)	Checks whether an encoder supports a specific bit rate mode.
OH_AVCapability_GetEncoderQualityRange (OH_AVCapability capability, OH_AVRange qualityRange)	Obtains the quality range supported by an encoder.
OH_AVCapability_GetEncoderComplexityRange (OH_AVCapability capability, OH_AVRange complexityRange)	Obtains the complexity range supported by an encoder.
OH_AVCapability_GetAudioSupportedSampleRates (OH_AVCapability capability, const int32_t sampleRates, uint32_t sampleRateNum)	Obtains the sampling rates supported by an audio codec.
OH_AVCapability_GetAudioChannelCountRange (OH_AVCapability capability, OH_AVRange channelCountRange)	Obtains the count range of audio channels supported by an audio codec.
OH_AVCapability_GetVideoWidthAlignment (OH_AVCapability capability, int32_t widthAlignment)	Obtains the video width alignment supported by a video codec.
OH_AVCapability_GetVideoHeightAlignment (OH_AVCapability capability, int32_t heightAlignment)	Obtains the video height alignment supported by a video codec.
OH_AVCapability_GetVideoWidthRangeForHeight (OH_AVCapability capability, int32_t height, OH_AVRange widthRange)	Obtains the video width range supported by a video codec based on a given height.
OH_AVCapability_GetVideoHeightRangeForWidth (OH_AVCapability capability, int32_t width, OH_AVRange heightRange)	Obtains the video height range supported by a video codec based on a given width.
OH_AVCapability_GetVideoWidthRange (OH_AVCapability capability, OH_AVRange widthRange)	Obtains the video width range supported by a video codec.
OH_AVCapability_GetVideoHeightRange (OH_AVCapability capability, OH_AVRange heightRange)	Obtains the video height range supported by a video codec.
OH_AVCapability_IsVideoSizeSupported (OH_AVCapability *capability, int32_t width, int32_t height)	Checks whether a video codec supports a specific video size.
OH_AVCapability_GetVideoFrameRateRange (OH_AVCapability capability, OH_AVRange frameRateRange)	Obtains the video frame rate range supported by a video codec.
OH_AVCapability_GetVideoFrameRateRangeForSize (OH_AVCapability capability, int32_t width, int32_t height, OH_AVRange frameRateRange)	Obtains the video frame rate range supported by a video codec based on a given video size.
OH_AVCapability_AreVideoSizeAndFrameRateSupported (OH_AVCapability *capability, int32_t width, int32_t height, int32_t frameRate)	Checks whether a video codec supports the combination of a video size and frame rate.
OH_AVCapability_GetVideoSupportedPixelFormats (OH_AVCapability capability, const int32_t pixelFormats, uint32_t pixelFormatNum)	Obtains the video pixel formats supported by a video codec.
OH_AVCapability_GetSupportedProfiles (OH_AVCapability capability, const int32_t profiles, uint32_t profileNum)	Obtains the profiles supported by a codec.
OH_AVCapability_GetSupportedLevelsForProfile (OH_AVCapability capability, int32_t profile, const int32_t levels, uint32_t levelNum)	Obtains the codec levels supported by a profile.
OH_AVCapability_AreProfileAndLevelSupported (OH_AVCapability *capability, int32_t profile, int32_t level)	Checks whether a codec supports the combination of a profile and level.