程序包 ohos.media.codec

类 CodecDescriptionList

java.lang.Object

ohos.media.codec.CodecDescriptionList

public class CodecDescriptionList
extends Object

Provides a MIME type list of media formats supported by codecs that are available for a device. You can use a method in this class to check whether the device supports the codec for a specified MIME type.

从以下版本开始:

3

SystemCapability

SystemCapability.Multimedia#MEDIA

构造器概要

构造器

构造器	说明
CodecDescriptionList()	A constructor used to create a CodecDescriptionList object.

方法概要

限定符和类型	方法	说明
List<CodecDescription>	findDecoder(Format format)	Obtains descriptions of all supported decoders for a specified media format.
List<CodecDescription>	findEncoder(Format format)	Obtains the description list of all supported encoders for a specified media format.
List<CodecDescription>	getSupportedCodecs()	Obtains the description list of codecs supported by the device.
List<CodecDescription>	getSupportedDecoders()	Obtains descriptions of all decoders supported by the device.
List<CodecDescription>	getSupportedEncoders()	Obtains the description list of encoders supported by the device.
static List<String>	getSupportedMimes()	Obtains a list of MIME types supported by the codecs available to a device.
static boolean	isDecoderSupportedByFormat(Format format)	Checks whether a device supports the decoder for the specified media format.
static boolean	isDecodeSupportedByMime(String mime)	Checks whether a device supports the decoder for the specified MIME type.
static boolean	isEncoderSupportedByFormat(Format format)	Checks whether a device supports the encoder for the specified media format.
static boolean	isEncodeSupportedByMime(String mime)	Checks whether a device supports the encoder for the specified MIME type.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

CodecDescriptionList

public CodecDescriptionList()

A constructor used to create a CodecDescriptionList object.

从以下版本开始:

4

方法详细资料

getSupportedCodecs

public final List<CodecDescription> getSupportedCodecs()

Obtains the description list of codecs supported by the device.

返回:

Returns a list of codec descriptions.

从以下版本开始:

4

getSupportedDecoders

public final List<CodecDescription> getSupportedDecoders()

Obtains descriptions of all decoders supported by the device.

返回:

Returns a list of decoder descriptions.

从以下版本开始:

4

getSupportedEncoders

public final List<CodecDescription> getSupportedEncoders()

Obtains the description list of encoders supported by the device.

返回:

Returns a list of encoder descriptions.

从以下版本开始:

4

findDecoder

public final List<CodecDescription> findDecoder(Format format)

Obtains descriptions of all supported decoders for a specified media format.

参数:

format - Indicates the media format.

返回:

Returns the decoder description list.

从以下版本开始:

4

findEncoder

public final List<CodecDescription> findEncoder(Format format)

Obtains the description list of all supported encoders for a specified media format.

参数:

format - Indicates the media format.

返回:

Returns the encoder description list.

从以下版本开始:

4

getSupportedMimes

public static List<String> getSupportedMimes()

Obtains a list of MIME types supported by the codecs available to a device.

返回:

Returns the list of MIME types.

从以下版本开始:

3

isDecodeSupportedByMime

public static boolean isDecodeSupportedByMime(String mime)

Checks whether a device supports the decoder for the specified MIME type.

参数:

mime - Indicates the media format MIME type.

返回:

Returns true if the decoder is supported; returns false otherwise.

从以下版本开始:

3

isEncodeSupportedByMime

public static boolean isEncodeSupportedByMime(String mime)

Checks whether a device supports the encoder for the specified MIME type.

参数:

mime - Indicates the media format MIME type.

返回:

Returns true if the encoder is supported; returns false otherwise.

从以下版本开始:

3

isDecoderSupportedByFormat

public static boolean isDecoderSupportedByFormat(Format format)

Checks whether a device supports the decoder for the specified media format.

参数:

format - Indicates the media format, for example, the audio format of a media file.

返回:

Returns true if the decoder is supported; returns false otherwise.

从以下版本开始:

3

isEncoderSupportedByFormat

public static boolean isEncoderSupportedByFormat(Format format)

Checks whether a device supports the encoder for the specified media format.

参数:

format - Indicates the media format, for example, the audio format of a media file.

返回:

Returns true if the encoder is supported; returns false otherwise.

从以下版本开始:

3