Methods and systems for facilitating multimedia data encoding using storage buffers

Patent metadata

Field	Value
Publication number	US-11025932-B2
Application number	US-201615089854-A
Country	US
Kind code	B2
Filing date	Apr 4, 2016
Priority date	Jan 13, 2011
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

Several methods and systems for facilitating multimedia data encoding are disclosed. In an embodiment, a plurality of picture buffers associated with multimedia data are received in an order of capture associated with the plurality of picture buffers. Buffer information is configured for each picture buffer from among the plurality of picture buffers comprising at least one of a metadata associated with the corresponding picture buffer and one or more encoding parameters for the corresponding picture buffer. A provision of picture buffers in an order of encoding is facilitated based on the configured buffer information.

First claim

The invention claimed is:

1. A method comprising:
configuring a first buffer information for a first picture buffer, the first buffer information comprising metadata associated with the first picture buffer;
identifying a first temporal level for the first picture buffer from among a plurality of pre-determined temporal levels based on the configured first buffer information;
identifying a second temporal level for a second picture buffer;
storing the first buffer information for the first picture buffer in a first storage buffer corresponding to the first temporal level of the first picture buffer;
storing a second buffer information for the second picture buffer in a second storage buffer corresponding to the second temporal level of the second picture buffer;
retrieving the first buffer information from the first picture buffer and second buffer information from the second picture buffer in an order of encoding for the first and second picture buffers;
receiving an instantaneous decoding refresh (IDR) frame insertion request and a flush request corresponding to the first picture buffer; and
converting the first buffer information from buffer information corresponding to bi-directional coded frames (B-frames) into buffer information corresponding to predictive coded frames (P-frames).

2. The method of claim 1 , wherein the first buffer information further comprises an encoding parameter for the first picture buffer.

3. The method of claim 1 , wherein the first buffer information configured for the first picture buffer corresponding to one of an intra coded frame (I-frame), an instantaneous decoding refresh (IDR) frame, and a P-frame is stored in the first storage buffer, the first storage buffer is associated with a lowest temporal level from among the plurality of pre-determined temporal levels.

4. The method of claim 1 , wherein the first buffer information corresponds to at least one of a B frame and a P-frame.

5. The method of claim 1 , further comprising:
encoding the first and second picture buffers based on the retrieved first and second buffer information.

6. The method of claim 1 , wherein the first picture buffer comprises at least one of:
an associated temporal level different than a temporal level associated with the first picture buffer at which one of the IDR frame insertion and the flush request is received; and
an associated capture index higher than a capture index of the second picture buffer.

7. The method of claim 1 , wherein converting the first buffer information comprises:
extracting the first buffer information;
modifying the extracted first buffer information from buffer information corresponding to the B-frames into buffer information corresponding to the P-frames; and
transferring the modified buffer information corresponding to the P-frames into the first storage buffer.

8. A system comprising:
a memory module configured to:
configure a first buffer information for a first picture buffer, the first buffer information comprising metadata associated with the first picture buffer;
identify a first temporal level for the first picture buffer from among a plurality of pre-determined temporal levels based on the configured first buffer information;
identify a second temporal level for a second picture buffer;
store the first buffer information for the first picture buffer in a first storage buffer corresponding to the first temporal level of the first picture buffer;
store a second buffer information for the second picture buffer in a second storage buffer corresponding to the second temporal level of the second picture buffer;

a processor module configured to retrieve the first buffer information from the first picture buffer and second buffer information from the second picture buffer in an order of encoding for the first and second picture buffers; and
a buffer information module configured to receive an instantaneous decoding refresh (IDR) frame insertion request and a flush request corresponding to the first picture buffer and to convert the first buffer information from buffer information corresponding to bi-directional coded frames (B-frames) into buffer information corresponding to predictive coded frames (P-frames).

9. The system of claim 8 , wherein the first buffer information further comprises an encoding parameter for the first picture buffer.

10. The system of claim 8 , wherein the first buffer information configured for the first picture buffer corresponding to one of an intra coded frame (I-frame), an instantaneous decoding refresh (IDR) frame, and a predictive coded frame (P-frame) is stored in the first storage buffer, the first storage buffer is associated with a lowest temporal level from among the plurality of pre-determined temporal levels.

11. The system of claim 8 , wherein the first picture buffer comprises at least one of:
an associated temporal level different than a temporal level associated with the first picture buffer at which one of the IDR frame insertion and the flush request is received; and
an associated capture index higher than a capture index of the second picture buffer.

12. The system of claim 8 , wherein converting the first buffer information comprises:
extracting the first buffer information;
modifying the extracted first buffer information from buffer information corresponding to the B-frames into buffer information corresponding to the P-frames; and
transferring the modified buffer information corresponding to the P-frames into the first storage buffer.

13. A non-transitory computer-readable medium storing a set of instructions that when executed cause a computer to perform a method, the method comprising:
configuring a first buffer information for a first picture buffer, the first buffer information comprising metadata associated with the first picture buffer;
identifying a first temporal level for the first picture buffer from among a plurality of pre-determined temporal levels based on the configured first buffer information;
identifying a second temporal level for a second picture buffer;
storing the first buffer information for the first picture buffer in the first storage buffer corresponding to the first temporal level of the first picture buffer;
storing a second buffer information for the second picture buffer in a second storage buffer corresponding to the second temporal level of the second picture buffer;
retrieving the first buffer information from the first picture buffer and second buffer information from the second picture buffer in an order of encoding for the first and second picture buffers; and
receiving an instantaneous decoding refresh (IDR) frame insertion request and a flush request corresponding to the first picture buffer;
converting the first buffer information from buffer information corresponding to bi-directional coded frames (B-frames) into buffer information corresponding to predictive coded frames (P-frames).

14. The non-transitory computer-readable medium of claim 13 , wherein the first buffer information further comprises an encoding parameter for the first picture buffer.

Assignees

• Texas Instruments Inc

Inventors

• Kiran Uday Pudipeddi
• Poddar Deepak Kumar
• Swami Pramod Kumar
• Kudana Arun Shankar

Classifications

• H04N19/44

  Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder · CPC title

• H04N19/423 Primary

  characterised by memory arrangements (H04N19/433 takes precedence) · CPC title

• H04N19/577

  Motion compensation with bidirectional frame interpolation, i.e. using B-pictures · CPC title

• H04N19/177

  the unit being a group of pictures [GOP] · CPC title