1*dfc6aa5cSAndroid Build Coastguard Worker; 2*dfc6aa5cSAndroid Build Coastguard Worker; jdct.inc - private declarations for forward & reverse DCT subsystems 3*dfc6aa5cSAndroid Build Coastguard Worker; 4*dfc6aa5cSAndroid Build Coastguard Worker; Copyright 2009 Pierre Ossman <[email protected]> for Cendio AB 5*dfc6aa5cSAndroid Build Coastguard Worker; Copyright (C) 2018, D. R. Commander. 6*dfc6aa5cSAndroid Build Coastguard Worker; 7*dfc6aa5cSAndroid Build Coastguard Worker; Based on the x86 SIMD extension for IJG JPEG library 8*dfc6aa5cSAndroid Build Coastguard Worker; Copyright (C) 1999-2006, MIYASAKA Masaru. 9*dfc6aa5cSAndroid Build Coastguard Worker; For conditions of distribution and use, see copyright notice in jsimdext.inc 10*dfc6aa5cSAndroid Build Coastguard Worker 11*dfc6aa5cSAndroid Build Coastguard Worker; Each IDCT routine is responsible for range-limiting its results and 12*dfc6aa5cSAndroid Build Coastguard Worker; converting them to unsigned form (0..MAXJSAMPLE). The raw outputs could 13*dfc6aa5cSAndroid Build Coastguard Worker; be quite far out of range if the input data is corrupt, so a bulletproof 14*dfc6aa5cSAndroid Build Coastguard Worker; range-limiting step is required. We use a mask-and-table-lookup method 15*dfc6aa5cSAndroid Build Coastguard Worker; to do the combined operations quickly. 16*dfc6aa5cSAndroid Build Coastguard Worker; 17*dfc6aa5cSAndroid Build Coastguard Worker%define RANGE_MASK (MAXJSAMPLE * 4 + 3) ; 2 bits wider than legal samples 18*dfc6aa5cSAndroid Build Coastguard Worker 19*dfc6aa5cSAndroid Build Coastguard Worker%define ROW(n, b, s) ((b) + (n) * (s)) 20*dfc6aa5cSAndroid Build Coastguard Worker%define COL(n, b, s) ((b) + (n) * (s) * DCTSIZE) 21*dfc6aa5cSAndroid Build Coastguard Worker 22*dfc6aa5cSAndroid Build Coastguard Worker%define DWBLOCK(m, n, b, s) \ 23*dfc6aa5cSAndroid Build Coastguard Worker ((b) + (m) * DCTSIZE * (s) + (n) * SIZEOF_DWORD) 24*dfc6aa5cSAndroid Build Coastguard Worker%define MMBLOCK(m, n, b, s) \ 25*dfc6aa5cSAndroid Build Coastguard Worker ((b) + (m) * DCTSIZE * (s) + (n) * SIZEOF_MMWORD) 26*dfc6aa5cSAndroid Build Coastguard Worker%define XMMBLOCK(m, n, b, s) \ 27*dfc6aa5cSAndroid Build Coastguard Worker ((b) + (m) * DCTSIZE * (s) + (n) * SIZEOF_XMMWORD) 28*dfc6aa5cSAndroid Build Coastguard Worker%define YMMBLOCK(m, n, b, s) \ 29*dfc6aa5cSAndroid Build Coastguard Worker ((b) + (m) * DCTSIZE * (s) + (n) * SIZEOF_YMMWORD) 30*dfc6aa5cSAndroid Build Coastguard Worker 31*dfc6aa5cSAndroid Build Coastguard Worker; -------------------------------------------------------------------------- 32