native_avcapability.h
Overview
The native_avcapability.h file declares the native APIs used to query the codec capability.
Library: libnative_media_codecbase.so
Since: 10
Related module: AVCapability
Summary
Structs
| Name | Description |
|---|---|
| struct OH_AVRange | Describes the value range, which contains the minimum value and maximum value. |
Types
| Name | Description |
|---|---|
| typedef struct OH_AVRange OH_AVRange | Defines the value range, which contains the minimum value and maximum value. |
| typedef enum OH_AVCodecCategory OH_AVCodecCategory | Defines an enum for codec categories. |
| typedef enum OH_AVCapabilityFeature OH_AVCapabilityFeature | Defines an enum for optional features that can be used in specific codec scenarios. |
Enums
| Name | Description |
|---|---|
| OH_AVCodecCategory { HARDWARE = 0, SOFTWARE } | Enumerates the codec categories. |
| OH_AVCapabilityFeature { VIDEO_ENCODER_TEMPORAL_SCALABILITY = 0, VIDEO_ENCODER_LONG_TERM_REFERENCE = 1, VIDEO_LOW_LATENCY = 2 } | Enumerates the optional features that can be used in specific codec scenarios. |
Functions
| Name | Description |
|---|---|
| OH_AVCapability *OH_AVCodec_GetCapability (const char *mime, bool isEncoder) | Obtains the codec capability recommended by the system. |
| OH_AVCapability *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. |
| bool OH_AVCapability_IsHardware (OH_AVCapability *capability) | Checks whether a codec capability instance describes a hardware codec. |
| const char *OH_AVCapability_GetName (OH_AVCapability *capability) | Obtains the codec name. |
| int32_t OH_AVCapability_GetMaxSupportedInstances (OH_AVCapability *capability) | Obtains the maximum number of codec instances supported by a codec. |
| OH_AVErrCode OH_AVCapability_GetEncoderBitrateRange (OH_AVCapability *capability, OH_AVRange *bitrateRange) | Obtains the bit rate range supported by an encoder. |
| bool OH_AVCapability_IsEncoderBitrateModeSupported (OH_AVCapability *capability, OH_BitrateMode bitrateMode) | Checks whether an encoder supports a specific bit rate mode. |
| OH_AVErrCode OH_AVCapability_GetEncoderQualityRange (OH_AVCapability *capability, OH_AVRange *qualityRange) | Obtains the quality range supported by an encoder. |
| OH_AVErrCode OH_AVCapability_GetEncoderComplexityRange (OH_AVCapability *capability, OH_AVRange *complexityRange) | Obtains the complexity range supported by an encoder. |
| OH_AVErrCode OH_AVCapability_GetAudioSupportedSampleRates (OH_AVCapability *capability, const int32_t **sampleRates, uint32_t *sampleRateNum) | Obtains the sample rates supported by an audio codec. |
| OH_AVErrCode OH_AVCapability_GetAudioChannelCountRange (OH_AVCapability *capability, OH_AVRange *channelCountRange) | Obtains the count range of audio channels supported by an audio codec. |
| OH_AVErrCode OH_AVCapability_GetVideoWidthAlignment (OH_AVCapability *capability, int32_t *widthAlignment) | Obtains the video width alignment supported by a video codec. |
| OH_AVErrCode OH_AVCapability_GetVideoHeightAlignment (OH_AVCapability *capability, int32_t *heightAlignment) | Obtains the video height alignment supported by a video codec. |
| OH_AVErrCode 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_AVErrCode 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_AVErrCode OH_AVCapability_GetVideoWidthRange (OH_AVCapability *capability, OH_AVRange *widthRange) | Obtains the video width range supported by a video codec. |
| OH_AVErrCode OH_AVCapability_GetVideoHeightRange (OH_AVCapability *capability, OH_AVRange *heightRange) | Obtains the video height range supported by a video codec. |
| bool OH_AVCapability_IsVideoSizeSupported (OH_AVCapability *capability, int32_t width, int32_t height) | Checks whether a video codec supports a specific video size. |
| OH_AVErrCode OH_AVCapability_GetVideoFrameRateRange (OH_AVCapability *capability, OH_AVRange *frameRateRange) | Obtains the video frame rate range supported by a video codec. |
| OH_AVErrCode 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. |
| bool 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_AVErrCode OH_AVCapability_GetVideoSupportedPixelFormats (OH_AVCapability *capability, const int32_t **pixelFormats, uint32_t *pixelFormatNum) | Obtains the video pixel formats supported by a video codec. |
| OH_AVErrCode OH_AVCapability_GetSupportedProfiles (OH_AVCapability *capability, const int32_t **profiles, uint32_t *profileNum) | Obtains the profiles supported by a codec. |
| OH_AVErrCode OH_AVCapability_GetSupportedLevelsForProfile (OH_AVCapability *capability, int32_t profile, const int32_t **levels, uint32_t *levelNum) | Obtains the codec levels supported by a profile. |
| bool OH_AVCapability_AreProfileAndLevelSupported (OH_AVCapability *capability, int32_t profile, int32_t level) | Checks whether a codec supports the combination of a profile and level. |
| bool OH_AVCapability_IsFeatureSupported (OH_AVCapability *capability, OH_AVCapabilityFeature feature) | Checks whether a codec supports a feature. |
| OH_AVFormat *OH_AVCapability_GetFeatureProperties (OH_AVCapability *capability, OH_AVCapabilityFeature feature) | Obtains the properties of a feature. You must manually release the OH_AVFormat instance in the return value. |