Transmission device, transmission method, reception device, and reception method

A transmission device comprising:

• processing circuitry configured to
• generate a predetermined number of audio streams including coded data of a plurality of groups,
• insert configuration information into an audio frame of a main stream of the predetermined number of the audio streams, and
• provide a command insertion area for a receiver to insert a command specifying a group from the plurality of groups to be decoded in at least one audio stream among the predetermined number of audio streams, wherein the receiver independently creates the command to be inserted.

A transmission method comprising:

• generating a predetermined number of audio streams including coded data of a plurality of groups;
• inserting configuration information into an audio frame of a main stream of the predetermined number of the audio streams;
• and
• providing a command insertion area for a receiver to insert a command specifying a group from the plurality of groups to be decoded in at least one audio stream among the predetermined number of audio streams, wherein the receiver independently creates the command to be inserted.

A reception device comprising:

• processing circuitry configured to
• receive a predetermined number of audio streams including coded data of a plurality of groups and configuration information of the predetermined number of audio streams;
• control display of a user interface that includes selection information for at least one group from among the plurality of groups based on the configuration information;
• receive a user selection operation of a group of the at least one group to be decoded;
• fetch audio streams including the group to be decoded from the predetermined number of audio streams and obtain one audio stream constructed by integrating the fetched audio streams;
• and
• insert a command to selectively decode the coded data of the group from among the plurality of groups included in the one audio stream into the one audio stream based on the user selection operation of the group.

A reception method comprising:

• receiving a predetermined number of audio streams including coded data of a plurality of groups and configuration information of the predetermined number of audio streams;
• controlling display of a user interface that includes selection information for at least one group from among the plurality of groups based on the configuration information;
• receiving a user selection operation of a group of the at least one group to be decoded;
• fetching audio streams including the group to be decoded from the predetermined number of audio streams and obtaining one audio stream constructed by integrating the fetched audio streams;
• and
• inserting, by processing circuitry of a reception apparatus, a command to selectively decode the coded data of the group from among the plurality of groups included in the one audio stream into the one audio stream based on the user selection operation of the group.

A non-transitory computer-readable storage medium storing instructions which when executed by a computer cause the computer to perform a reception method, the reception method comprising:

• receiving a predetermined number of audio streams including coded data of a plurality of groups and configuration information of the predetermined number of audio streams;
• controlling display of a user interface that includes selection information for at least one group from among the plurality of groups based on the configuration information;
• receiving a user selection operation of a group of the at least one group to be decoded;
• fetching audio streams including the group to be decoded from the predetermined number of audio streams and obtaining one audio stream constructed by integrating the fetched audio streams;
• and
• inserting a command to selectively decode the coded data of the group from among the plurality of groups included in the one audio stream into the one audio stream based on the user selection operation of the group