Multiple bit rate video decoding

A computer-implemented process performed by a computing device comprising a video decoder, the process comprising:

• receiving, into a memory of the computing device, an encoded bitstream of video data comprising encoded video data in a plurality of formats, indices of frames of the encoded video data, and information describing a format of the encoded video data;
• configuring the memory to store video data, produced by the video decoder based on decoding of the encoded bitstream, in an array of textures, the array of textures including, for video data in the plurality of formats, a first set of a first number of memory locations configured to store the data produced by the video decoder based on decoding of the encoded bitstream of video data in a first format, and a second set of a second number of memory locations configured to store the data produced by the video decoder based on decoding of the encoded bitstream of video data in a second format, wherein, after a change from the first format to the second format, the video decoder deallocates memory locations in the first set after completing processing of an image of video data in the first format and allocates memory locations in the second set being allocated so as to change for images to be processed in the second format, while the video decoder is decoding the encoded bitstream;
• providing the video decoder with an indication of one or more of the indices for one or more of the frames of the video data to be decoded and the format of the video data;
• computing, by the video decoder, addresses in the memory at least using the one or more indices of the one or more frames and the format of the video data;
• and
• accessing and decoding, by the video decoder, the encoded bitstream from the memory at least using the computed addresses, to output decoded video data at least based on the computed addresses.

A computer readable storage medium, comprising a storage device or a memory device, and computer program instructions for a computing device, encoded on the computer readable storage medium, the computing device comprising a video decoder comprising an input configured to receive, for an encoded bitstream of video data, indices of frames of the encoded video data, and information describing a format of the encoded video data, and an output configured to provide decoded video data, the encoded video data comprising encoded video data in a plurality of formats, the computing device further comprising a memory accessible by the video decoder and configured to store the encoded bitstream and data from the output of the video decoder at least based on the video decoder decoding of the encoded bitstream, the computer program instructions, when executed by the computing device, configuring the computing device to:

• receive, into the memory, an encoded bitstream of video data comprising encoded video data in a plurality of formats, indices of frames of the encoded video data, and information describing a format of the encoded video data;
• configure the memory to store video data, produced by a video decoder based on decoding of the encoded bitstream, in an array of textures, the array of textures including, for video data in the plurality of formats, a first set of a first number of memory locations configured to store the data produced by the video decoder based on decoding of the encoded bitstream of video data in a first format, and a second set of a second number of memory locations configured to store the data produced by the video decoder based on decoding of the encoded bitstream of video data in a second format, wherein, after a change from the first format to the second format, the video decoder deallocates memory locations in the first set after completing processing of an image of video data in the first format, and allocates memory locations in the second set for images to be processed in the second format, while the video decoder is decoding the encoded bitstream;
• provide the video decoder with an indication of one or more of the indices for one or more of the frames of the video data to be decoded and the format of the video data;
• compute, using the video decoder, addresses in the memory at least using the one or more indices of the one or more frames and the format of the video data;
• and
• access and decode, using the video decoder, the encoded bitstream from the memory at least using the computed addresses, to output decoded video data at least based on the computed addresses.