Hrd descriptor and buffer model of data streams for carriage of hevc extensions

A method of processing video data, the method comprising:

• generating a video parameter set (VPS) that includes an array of syntax elements and a plurality of Hypothetical Reference Decoder (HRD) parameters syntax structures, wherein:
• each respective HRD parameters syntax structure of the plurality of HRD parameters syntax structures comprises a respective set of HRD parameters, and
• each respective syntax element of the array of syntax elements specifies an index of an HRD parameters syntax structure in the plurality of HRD parameters syntax structures;
• generating a High Efficiency Video Coding (HEVC) timing and HRD descriptor comprising a target schedule index syntax element indicating an index of a delivery schedule;
• and
• generating a data stream comprising a plurality of elementary streams and the High Efficiency Video Coding (HEVC) timing and HRD descriptor,
• wherein a set of parameters identifies a syntax element in the array of syntax elements that specifies an index of a particular HRD parameters syntax structure applicable to the particular elementary stream, the particular HRD parameters syntax structure being one of the plurality of HRD parameters syntax structures, the particular HRD parameters syntax structure being part of an operation point, the set of parameters comprises a parameter having a value equal to a value of the target schedule index syntax element.

A device for processing video data, the device comprising:

• a memory configured to store the video data;
• and
• one or more processors configured to:
• obtain a data stream comprising a plurality of elementary streams and a High Efficiency Video Coding (HEVC) timing and Hypothetical Reference Decoder (HRD) descriptor, wherein the HEVC timing and HRD descriptor comprises a target schedule index syntax element indicating an index of a delivery schedule, the elementary streams comprising encoded representations of the video data;
• identify, based on a set of parameters, a syntax element in an array of syntax elements in a video parameter set (VPS), wherein:
• the VPS comprises a plurality of HRD parameters syntax structures, wherein each respective HRD parameters syntax structure of the plurality of HRD parameters syntax structures comprises a respective set of HRD parameters,
• each respective syntax element of the array of syntax elements specifies an index of an HRD parameters syntax structure in the plurality of HRD parameters syntax structures, and
• the set of parameters comprises a parameter having a value equal to a value of the target schedule index syntax element;
• and
• identify, based on an index specified by the identified syntax element, a particular HRD parameters syntax structure in the plurality of HRD parameters syntax structures as being applicable to a particular elementary stream that is part of the operation point, the plurality of elementary streams including the particular elementary stream.

A device for processing video data, the device comprising:

• a memory configured to store the video data;
• and
• one or more processors configured to:
• generate a video parameter set (VPS) that includes an array of syntax elements and a plurality of Hypothetical Reference Decoder (HRD) parameters syntax structures, wherein:
• each respective HRD parameters syntax structure of the plurality of HRD parameters syntax structures comprises a respective set of HRD parameters, and
• each respective syntax element of the array of syntax elements specifies an index of an HRD parameters syntax structure in the plurality of HRD parameters syntax structures;
• generate a High Efficiency Video Coding (HEVC) timing and HRD descriptor comprising a target schedule index syntax element indicating an index of a delivery schedule;
• and
• generate a data stream comprising a plurality of elementary streams and the High Efficiency Video Coding (HEVC) timing and HRD descriptor, the plurality of elementary streams comprising an encoded representation of the video data,
• wherein a set of parameters identifies a syntax element in the array of syntax elements that specifies an index of a particular HRD parameters syntax structure applicable to the particular elementary stream, the particular HRD parameters syntax structure being one of the plurality of HRD parameters syntax structures, the particular HRD parameters syntax structure being part of an operation point, the set of parameters comprises a parameter having a value equal to a value of the target schedule index syntax element.

A device for processing video data, the device comprising:

• means for obtaining a data stream comprising a plurality of elementary streams and a High Efficiency Video Coding (HEVC) timing and Hypothetical Reference Decoder (HRD) descriptor, wherein the HEVC timing and HRD descriptor comprises a target schedule index syntax element indicating an index of a delivery schedule;
• means for identifying, based on a set of parameters, a syntax element in an array of syntax elements in a video parameter set (VPS), wherein:
• the VPS comprises a plurality of HRD parameters syntax structures, wherein each respective HRD parameters syntax structure of the plurality of HRD parameters syntax structures comprises a respective set of HRD parameters,
• each respective syntax element of the array of syntax elements specifies an index of an HRD parameters syntax structure in the plurality of HRD parameters syntax structures, and
• the set of parameters comprises a parameter having a value equal to a value of the target schedule index syntax element;
• and
• means for identifying, based on an index specified by the identified syntax element, a particular HRD parameters syntax structure in the plurality of HRD parameters syntax structures as being applicable to a particular elementary stream that is part of the operation point, the plurality of elementary streams including the particular elementary stream.

A device for processing video data, the device comprising:

• means for generating a video parameter set (VPS) that includes an array of syntax elements and a plurality of Hypothetical Reference Decoder (HRD) parameters syntax structures, wherein:
• each respective HRD parameters syntax structure of the plurality of HRD parameters syntax structures comprises a respective set of HRD parameters, and
• each respective syntax element of the array of syntax elements specifies an index of an HRD parameters syntax structure in the plurality of HRD parameters syntax structures;
• means for generating a High Efficiency Video Coding (HEVC) timing and HRD descriptor comprising a target schedule index syntax element indicating an index of a delivery schedule;
• and
• means for generating a data stream comprising a plurality of elementary streams and the High Efficiency Video Coding (HEVC) timing and HRD descriptor,
• wherein a set of parameters identifies a syntax element in the array of syntax elements that specifies an index of a particular HRD parameters syntax structure applicable to the particular elementary stream, the particular HRD parameters syntax structure being one of the plurality of HRD parameters syntax structures, the particular HRD parameters syntax structure being part of an operation point, the set of parameters comprises a parameter having a value equal to a value of the target schedule index syntax element.

A computer-readable storage medium having stored thereon instructions that, when executed, cause one or more processors of a device to:

• obtain a data stream comprising a plurality of elementary streams and a High Efficiency Video Coding (HEVC) timing and Hypothetical Reference Decoder (HRD) descriptor, wherein the HEVC timing and HRD descriptor comprises a target schedule index syntax element indicating an index of a delivery schedule;
• identify, based on a set of parameters, a syntax element in an array of syntax elements in a video parameter set (VPS), wherein:
• the VPS comprises a plurality of HRD parameters syntax structures, wherein each respective HRD parameters syntax structure of the plurality of HRD parameters syntax structures comprises a respective set of HRD parameters,
• each respective syntax element of the array of syntax elements specifies an index of an HRD parameters syntax structure in the plurality of HRD parameters syntax structures, and
• the set of parameters comprises a parameter having a value equal to a value of the target schedule index syntax element;
• and
• identify, based on an index specified by the identified syntax element, a particular HRD parameters syntax structure in the plurality of HRD parameters syntax structures as being applicable to a particular elementary stream that is part of the operation point, the plurality of elementary streams including the particular elementary stream.

A computer-readable storage medium having stored thereon instructions that, when executed, cause one or more processors of a device to:

• generate a video parameter set (VPS) that includes an array of syntax elements and a plurality of Hypothetical Reference Decoder (HRD) parameters syntax structures, wherein:
• each respective HRD parameters syntax structure of the plurality of HRD parameters syntax structures comprises a respective set of HRD parameters, and
• each respective syntax element of the array of syntax elements specifies an index of an HRD parameters syntax structure in the plurality of HRD parameters syntax structures;
• generate a High Efficiency Video Coding (HEVC) timing and HRD descriptor comprising a target schedule index syntax element indicating an index of a delivery schedule;
• and
• generate a data stream comprising a plurality of elementary streams and the High Efficiency Video Coding (HEVC) timing and HRD descriptor,
• wherein a set of parameters identifies a syntax element in the array of syntax elements that specifies an index of a particular HRD parameters syntax structure applicable to the particular elementary stream, the particular HRD parameters syntax structure being one of the plurality of HRD parameters syntax structures, the particular HRD parameters syntax structure being part of an operation point, the set of parameters comprises a parameter having a value equal to a value of the target schedule index syntax element.