Abstract: A computer system to compress bit formats provided in a first packed data sequence. The computer system include a processor, a multimedia input device to receive an image or audio input, a memory having stored thereon a set of packed data sequences having data elements representing the input, and a compression routine for manipulating the input. When the compression routine is executed by the processor, the routine causes the processor to: generate a second packed data sequence by copying the first packed data sequence; mask a portion of the first packed data sequence; shift data elements of the first packed data sequence, in response to executing a single first instruction, wherein the data elements are independently shifted by separate shift counts; mask a portion of the second packed data sequence; and generate a final result by joining the second and first packed data sequences.

Abstract: A computer implemented method for compressing bit formats provided in a first packed data sequence. One embodiment of the method comprises the steps of generating, in response to executing a first instruction, a second packed data sequence by copying the first packed data sequence. A second step of masking, in response to executing a second instruction, a portion of the first packed data sequence. A third step of shifting data elements of the first packed data sequence, in response to executing a third instruction, wherein the data elements are independently shifted by separate shift counts. A fourth step of masking, in response to executing a fourth instruction, a portion of the second packed data sequence. A fifth step of generating, in response to executing a fifth instruction, a final result by joining the second and first packed data sequences.

Abstract: A computer implemented method for compressing bit formats provided in a first packed data sequence. One embodiment of the method comprises the steps of generating, in response to executing a first instruction, a second packed data sequence by copying the first packed data sequence. A second step of masking, in response to executing a second instruction, a portion of the first packed data sequence. A third step of shifting data elements of the first packed data sequence, in response to executing a third instruction, wherein the data elements are independently shifted by separate shift counts. A fourth step of masking, in response to executing a fourth instruction, a portion of the second packed data sequence. A fifth step of generating, in response to executing a fifth instruction, a final result by joining the second and first packed data sequences.