Inverse scan, coefficient, inverse quantization and inverse transform system and method
Presented herein are inverse scan, coefficient prediction, inverse quantization and inverse transform system(s) and method(s). In one embodiment, there is presented a system for converting scanned quantized frequency coefficients to pixel domain data. The system comprises a first circuit and a second circuit. The first circuit converts scanned quantized frequency coefficients to pixel domain data, wherein the scanned quantized frequency coefficients encode video data in accordance with a first encoding standard. The second circuit converts scanned quantized frequency coefficients to pixel domain data, wherein the scanned quantized frequency coefficients encode video data in accordance with a second encoding standard.
1 . A system for converting scanned quantized frequency coefficients to pixel domain data, said system comprising:
an input for receiving scanned quantized frequency coefficients;
a first circuit for converting the scanned quantized frequency coefficients to pixel domain data, if scanned quantized frequency coefficients encode video data in accordance with a first encoding standard; and
a second circuit for converting scanned quantized frequency coefficients to pixel domain data, if the scanned quantized frequency coefficients encode video data in accordance with a second encoding standard.
2 . The system of claim 1 , wherein the first encoding standard is VC-1, and the second encoding standard is H.264.
3 . The system of claim 2 , further comprising:
a third circuit for converting scanned quantized frequency coefficients to pixel domain data, wherein the scanned quantized frequency coefficients encode video data in accordance with MPEG-2.
4 . The system of claim 1 , wherein the first circuit comprises a coefficient predictor for predicting quantized frequency coefficients.
5 . The system of claim 1 , further comprising:
input registers for receiving scanned quantized frequency coefficients, the scanned quantized frequency coefficients encoded in accordance with the first encoding standard or the second encoding standard.
6 . The system of claim 5 , further comprising:
an input control register for storing an indicator, said indicator indicating whether the scanned quantized frequency coefficients are encoded in accordance with the first encoding standard or the second encoding standard.
7 . The system of claim 6 , wherein the indicator is written to the input control register by a controller.
8 . A method for converting scanned quantized frequency coefficients to pixel domain data, said method comprising:
receiving an indicator indicating an encoding standard, wherein the scanned quantized frequency coefficients are encoded in accordance with the encoding standard;
converting the scanned quantized frequency coefficients to pixel domain data in accordance with a first standard, wherein the indicator indicates that the scanned quantized frequency coefficients are encoded in accordance with the first standard; and
converting the scanned quantized frequency coefficients to pixel domain data in accordance with a second standard, wherein the indicator indicates that the scanned quantized frequency coefficients are encoded in accordance with the second standard.
9 . The method of claim 8 , wherein the first encoding standard is VC-1, and the second encoding standard is H.264.
10 . The method of claim 9 , further comprising:
converting the scanned quantized frequency coefficients to pixel domain data in accordance with MPEG-2, wherein the indicator indicates that the scanned quantized frequency coefficients are encoded in accordance with MPEG-2.
11 . The method of claim 8 , wherein converting the scanned quantized frequency coefficients to the pixel domain data in accordance with the first standard further comprises:
predicting quantized frequency coefficients.