Signaling for sub-decoded picture buffer (sub-dpb) based dpb operations in video coding

An apparatus configured to decode video data, the apparatus comprising:

• one or more memory devices comprising one or more sub-decoded picture buffers (DPBs) configured to store video data;
• and
• a video decoder configured to:
• receive an encoded video bitstream that includes a plurality of pictures;
• store the plurality of pictures in the one or more sub-DPBs;
• receive a respective set of sub-DPB parameters for each respective operation point of the encoded video bitstream;
• apply the respective set of sub-DPB parameters to all layers of an output layer set for each respective operation point;
• and
• perform a sub-DPB management process on the one or more sub-DPBs in accordance with the received respective single sets of sub-DPB parameters.

An apparatus configured to decode video data, the apparatus comprising:

• means for receiving an encoded video bitstream that includes a plurality of pictures;
• means for storing the plurality of pictures in one or more sub-decoded picture buffers (DPBs);
• means for receiving a respective set of sub-DPB parameters for each respective operation point of the encoded video bitstream;
• means for applying the respective set of sub-DPB parameters to all layers of an output layer set for each respective operation point;
• and
• means for performing a sub-DPB management process on the one or more sub-DPBs in accordance with the received respective single sets of sub-DPB parameters.

A computer-readable storage medium storing instructions that, when executed, cause one or more processors of a device configured to decode video data to:

• receive an encoded video bitstream that includes a plurality of pictures;
• store the plurality of pictures in the one or more sub-DPBs;
• receive a respective set of sub-DPB parameters for each respective operation point of the encoded video bitstream;
• apply the respective set of sub-DPB parameters to all layers of an output layer set for each respective operation point;
• and
• perform a sub-DPB management process on the one or more sub-DPBs in accordance with the received respective single sets of sub-DPB parameters.

A method of encoding video data, the method comprising:

• reconstructing a plurality of pictures of an encoded video bitstream;
• storing the plurality of pictures in one or more sub-decoded picture buffers (DPBs);
• generating a respective set of sub-DPB parameters for each respective operation point of the encoded video bitstream;
• applying the respective set of sub-DPB parameters to all layers of an output layer set for each respective operation point;
• performing a sub-DPB management process on the one or more sub-DPBs in accordance with the generated respective single sets of sub-DPB parameters;
• and
• signaling the respective set of sub-DPB parameters in the encoded video bitstream.

An apparatus configured to encode video data, the apparatus comprising:

• one or more memory devices comprising one or more sub-decoded picture buffers (DPBs) configured to store video data;
• and
• a video encoder configured to:
• reconstruct a plurality of pictures of an encoded video bitstream;
• store the plurality of pictures in one or more sub-decoded picture buffers (DPBs);
• generate a respective set of sub-DPB parameters for each respective operation point of the encoded video bitstream;
• apply the respective set of sub-DPB parameters to all layers of an output layer set for each respective operation point;
• perform a sub-DPB management process on the one or more sub-DPBs in accordance with the generated respective single sets of sub-DPB parameters;
• and
• signal the respective set of sub-DPB parameters in the encoded video bitstream.

An apparatus configured to encode video data, the apparatus comprising:

• means for reconstructing a plurality of pictures of an encoded video bitstream;
• means for storing the plurality of pictures in one or more sub-decoded picture buffers (DPBs);
• means for generating a respective set of sub-DPB parameters for each respective operation point of the encoded video bitstream;
• means for applying the respective set of sub-DPB parameters to all layers of an output layer set for each respective operation point;
• means for performing a sub-DPB management process on the one or more sub-DPBs in accordance with the generated respective single sets of sub-DPB parameters;
• and
• means for signaling the respective set of sub-DPB parameters in the encoded video bitstream.

A computer-readable storage medium storing instructions that, when executed, cause one or more processors of a device configured to encode video data to:

• reconstruct a plurality of pictures of an encoded video bitstream;
• store the plurality of pictures in one or more sub-decoded picture buffers (DPBs);
• generate a respective set of sub-DPB parameters for each respective operation point of the encoded video bitstream;
• apply the respective set of sub-DPB parameters to all layers of an output layer set for each respective operation point;
• perform a sub-DPB management process on the one or more sub-DPBs in accordance with the generated respective single sets of sub-DPB parameters;
• and
• signal the respective set of sub-DPB parameters in the encoded video bitstream.