Optimal power usage in decoding a content stream stored in a secondary storage

A method of processing a content stream stored on a secondary storage, said method comprising:

• retrieving said content stream into a random access memory (RAM);
• examining the data stored in said RAM to determine a sequence of frames related to a data stream contained in said content stream;
• forming an index information indicating locations of said RAM where each of said sequence of frames is stored;
• and
• providing said index information to a decoder, wherein said decoder decodes said sequence of frames by identifying said sequence of frames in said RAM based on said index information.

A computer readable medium carrying one or more sequences of instructions for causing a device to process a content stream, wherein execution of said one or more sequences of instructions by one or more processors contained in a digital processing system causes said digital processing system to perform the actions of:

• retrieving said content stream into a random access memory (RAM);
• examining the data stored in said RAM to determine a sequence of frames related to a data stream contained in said content stream;
• forming an index information indicating locations of said RAM where each of said sequence of frames is stored;
• and
• providing said index information to a decoder, wherein said decoder decodes said sequence of frames by identifying said sequence of frames in said RAM based on said index information.