| 主权项 |
1. A video decoder, comprising:
a video control component comprising a first processor coupled to a memory containing software instructions to be loaded into the first processor and used by the first processor during video decoding control; an entropy decoder component coupled to the video control component and configured to decode an entropy encoded bit stream; an inverse quantization component coupled to the entropy decoding component and configured to de-quantize quantized transform coefficients of residual prediction units obtained from the decoded entropy encoded bit stream; an inverse transform component coupled to the inverse quantization component and configured to inverse transform the transform coefficients of residual prediction units from the inverse quantization component from a frequency domain to residual prediction units; a motion compensation component coupled to the entropy decoding component and configured to form reconstructed prediction units; an adder component coupled to the motion compensation component and the inverse transform component and configured to combine residual prediction units and reconstructed prediction units to form a reconstructed picture a deblock filter component coupled to the adder component and configured to perform deblock filtering on the reconstructed picture; a first SAO filter component coupled to the deblock filter component and coupled to the video control component, the first SAO filter component configured to perform SAO filtering on a first non-overlapping region of the reconstructed picture using first SAO band parameters obtained from the decoded entropy encoded bit stream wherein the first SAO band parameters comprises a first sequence of values of magnitudes of SAO band offsets without sign followed by signs of only the non-zero values of magnitudes of the first SAO band offset values in the decoded entropy encoded bit stream; a second SAO filter component coupled to the deblock filter component and coupled to the video control component, the second SAO filter component configured to perform SAO filtering on a second non-overlapping region of the reconstructed picture using second SAO band parameters obtained from the decoded entropy encoded bit stream wherein the second SAO band parameters comprises a second sequence of values of magnitudes of SAO band offsets without sign followed by signs of only the non-zero values of magnitudes of the second SAO band offset values in the decoded entropy encoded bit stream; and the video control component configured to operate the first SAO filter component and the second SAO filter component in a pipelined manner wherein the entropy decoding component, the inverse quantization component, the inverse transform component, the motion compensation component, the adder component, the deblock filter component, the first SAO filter component and the second SAO filter component are all implemented in a plurality of processing modules coupled to the video control component wherein each of the plurality of processing modules can selected from a group consisting of a microprocessor, an application specific integrated circuit (ASIC), digital signal processor (DSP), field programmable gate array (FPGA), hardware accelerator, video/imaging processor and video data conversion engine. |
