org.jitsi.service.neomedia.format

Interface MediaFormatFactory

All Known Implementing Classes:

MediaFormatFactoryImpl

public interface MediaFormatFactory

Allows the creation of audio and video MediaFormat instances.

Author:

Emil Ivov, Lubomir Marinov

Field Summary

Fields

Modifier and Type	Field and Description
static int	CHANNELS_NOT_SPECIFIED The constant to be used as an argument representing number of channels to denote that a specific number of channels is not specified.
static double	CLOCK_RATE_NOT_SPECIFIED The constant to be used as an argument representing a clock rate to denote that a specific clock rate is not specified.

Method Summary

Modifier and Type	Method and Description
MediaFormat	createMediaFormat(byte rtpPayloadType) Creates a MediaFormat for the specified RTP payload type with default clock rate and set of format parameters.
MediaFormat	createMediaFormat(byte rtpPayloadType, String encoding, double clockRate, int channels, float frameRate, Map<String,String> formatParams, Map<String,String> advancedAttrs) Creates a MediaFormat either for the specified rtpPayloadType or for the specified encoding, clockRate, channels and set of format parameters.
MediaFormat	createMediaFormat(String encoding) Creates a MediaFormat for the specified encoding with default clock rate and set of format parameters.
MediaFormat	createMediaFormat(String encoding, double clockRate) Creates a MediaFormat for the specified encoding with the specified clockRate and a default set of format parameters.
MediaFormat	createMediaFormat(String encoding, double clockRate, int channels) Creates a MediaFormat for the specified encoding, clockRate and channels and a default set of format parameters.
MediaFormat	createMediaFormat(String encoding, double clockRate, int channels, float frameRate, Map<String,String> formatParams, Map<String,String> advancedAttrs) Creates a MediaFormat for the specified encoding, clockRate, channels and set of format parameters.
MediaFormat	createMediaFormat(String encoding, double clockRate, Map<String,String> formatParams, Map<String,String> advancedAttrs) Creates a MediaFormat for the specified encoding, clockRate and set of format parameters.
MediaFormat	createUnknownMediaFormat(org.jitsi.utils.MediaType type) Creates an unknown MediaFormat.

Field Detail

CHANNELS_NOT_SPECIFIED

static final int CHANNELS_NOT_SPECIFIED

The constant to be used as an argument representing number of channels to denote that a specific number of channels is not specified.

See Also:

Constant Field Values

CLOCK_RATE_NOT_SPECIFIED

static final double CLOCK_RATE_NOT_SPECIFIED

The constant to be used as an argument representing a clock rate to denote that a specific clock rate is not specified.

See Also:

Constant Field Values

Method Detail

createUnknownMediaFormat

MediaFormat createUnknownMediaFormat(org.jitsi.utils.MediaType type)

Creates an unknown MediaFormat.

Parameters:

type - MediaType

Returns:

unknown MediaFormat

createMediaFormat

MediaFormat createMediaFormat(String encoding)

Creates a MediaFormat for the specified encoding with default clock rate and set of format parameters. If encoding is known to this MediaFormatFactory, returns a MediaFormat which is either an AudioMediaFormat or a VideoMediaFormat instance. Otherwise, returns null.

Parameters:

encoding - the well-known encoding (name) to create a MediaFormat for

Returns:

a MediaFormat with the specified encoding which is either an AudioMediaFormat or a VideoMediaFormat instance if encoding is known to this MediaFormatFactory; otherwise, null

createMediaFormat

MediaFormat createMediaFormat(byte rtpPayloadType)

Creates a MediaFormat for the specified RTP payload type with default clock rate and set of format parameters. If rtpPayloadType is known to this MediaFormatFactory, returns a MediaFormat which is either an AudioMediaFormat or a VideoMediaFormat instance. Otherwise, returns null.

Parameters:

rtpPayloadType - the RTP payload type of the MediaFormat to create

Returns:

a MediaFormat with the specified rtpPayloadType which is either an AudioMediaFormat or a VideoMediaFormat instance if rtpPayloadType is known to this MediaFormatFactory; otherwise, null

createMediaFormat

MediaFormat createMediaFormat(String encoding,
                              double clockRate)

Creates a MediaFormat for the specified encoding with the specified clockRate and a default set of format parameters. If encoding is known to this MediaFormatFactory, returns a MediaFormat which is either an AudioMediaFormat or a VideoMediaFormat instance. Otherwise, returns null.

Parameters:

encoding - the well-known encoding (name) to create a MediaFormat for

clockRate - the clock rate in Hz to create a MediaFormat for

Returns:

a MediaFormat with the specified encoding and clockRate which is either an AudioMediaFormat or a VideoMediaFormat instance if encoding is known to this MediaFormatFactory; otherwise, null

createMediaFormat

MediaFormat createMediaFormat(String encoding,
                              double clockRate,
                              int channels)

Creates a MediaFormat for the specified encoding, clockRate and channels and a default set of format parameters. If encoding is known to this MediaFormatFactory, returns a MediaFormat which is either an AudioMediaFormat or a VideoMediaFormat instance. Otherwise, returns null.

Parameters:

encoding - the well-known encoding (name) to create a MediaFormat for

clockRate - the clock rate in Hz to create a MediaFormat for

channels - the number of available channels (1 for mono, 2 for stereo) if it makes sense for the MediaFormat with the specified encoding; otherwise, ignored

Returns:

a MediaFormat with the specified encoding, clockRate and channels and a default set of format parameters which is either an AudioMediaFormat or a VideoMediaFormat instance if encoding is known to this MediaFormatFactory; otherwise, null

createMediaFormat

MediaFormat createMediaFormat(String encoding,
                              double clockRate,
                              Map<String,String> formatParams,
                              Map<String,String> advancedAttrs)

Creates a MediaFormat for the specified encoding, clockRate and set of format parameters. If encoding is known to this MediaFormatFactory, returns a MediaFormat which is either an AudioMediaFormat or a VideoMediaFormat instance. Otherwise, returns null.

Parameters:

encoding - the well-known encoding (name) to create a MediaFormat for

clockRate - the clock rate in Hz to create a MediaFormat for

formatParams - any codec specific parameters which have been received via SIP/SDP or XMPP/Jingle

advancedAttrs - advanced attributes received via SIP/SDP or XMPP/Jingle

Returns:

a MediaFormat with the specified encoding, clockRate and set of format parameters which is either an AudioMediaFormat or a VideoMediaFormat instance if encoding is known to this MediaFormatFactory; otherwise, null

createMediaFormat

MediaFormat createMediaFormat(String encoding,
                              double clockRate,
                              int channels,
                              float frameRate,
                              Map<String,String> formatParams,
                              Map<String,String> advancedAttrs)

Creates a MediaFormat for the specified encoding, clockRate, channels and set of format parameters. If encoding is known to this MediaFormatFactory, returns a MediaFormat which is either an AudioMediaFormat or a VideoMediaFormat instance. Otherwise, returns null.

Parameters:

encoding - the well-known encoding (name) to create a MediaFormat for

clockRate - the clock rate in Hz to create a MediaFormat for

frameRate - the frame rate in number of frames per second to create a MediaFormat for

channels - the number of available channels (1 for mono, 2 for stereo) if it makes sense for the MediaFormat with the specified encoding; otherwise, ignored

formatParams - any codec specific parameters which have been received via SIP/SDP or XMPP/Jingle

advancedAttrs - advanced attributes received via SIP/SDP or XMPP/Jingle

Returns:

a MediaFormat with the specified encoding, clockRate, channels and set of format parameters which is either an AudioMediaFormat or a VideoMediaFormat instance if encoding is known to this MediaFormatFactory; otherwise, null

createMediaFormat

MediaFormat createMediaFormat(byte rtpPayloadType,
                              String encoding,
                              double clockRate,
                              int channels,
                              float frameRate,
                              Map<String,String> formatParams,
                              Map<String,String> advancedAttrs)

Creates a MediaFormat either for the specified rtpPayloadType or for the specified encoding, clockRate, channels and set of format parameters. If encoding is known to this MediaFormatFactory, ignores rtpPayloadType and returns a MediaFormat which is either an AudioMediaFormat or a VideoMediaFormat instance. If rtpPayloadType is not MediaFormat.RTP_PAYLOAD_TYPE_UNKNOWN and encoding is null, uses the encoding associated with rtpPayloadType.

Parameters:

rtpPayloadType - the RTP payload type to create a MediaFormat for; MediaFormat.RTP_PAYLOAD_TYPE_UNKNOWN if encoding is not null. If rtpPayloadType is not MediaFormat#RTP_PAYLOAD_TYPE_UNKNOWN and encoding is not null, rtpPayloadType is ignored

encoding - the well-known encoding (name) to create a MediaFormat for; null

clockRate - the clock rate in Hz to create a MediaFormat for

frameRate - the frame rate in number of frames per second to create a MediaFormat for

channels - the number of available channels (1 for mono, 2 for stereo) if it makes sense for the MediaFormat with the specified encoding; otherwise, ignored

formatParams - any codec specific parameters which have been received via SIP/SDP or XMPP/Jingle

advancedAttrs - advanced attributes received via SIP/SDP or XMPP/Jingle

Returns:

a MediaFormat with the specified encoding, clockRate, channels and set of format parameters which is either an AudioMediaFormat or a VideoMediaFormat instance if encoding is known to this MediaFormatFactory; otherwise, null