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Issue 1953443002: Update to libjpeg_turbo 1.4.90 (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/libjpeg_turbo.git@master
Patch Set: Created 4 years, 7 months ago
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1 ; 1 ;
2 ; jdct.inc - private declarations for forward & reverse DCT subsystems 2 ; jdct.inc - private declarations for forward & reverse DCT subsystems
3 ; 3 ;
4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB 4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
5 ; 5 ;
6 ; Based on 6 ; Based on
7 ; x86 SIMD extension for IJG JPEG library 7 ; x86 SIMD extension for IJG JPEG library
8 ; Copyright (C) 1999-2006, MIYASAKA Masaru. 8 ; Copyright (C) 1999-2006, MIYASAKA Masaru.
9 ; For conditions of distribution and use, see copyright notice in jsimdext.inc 9 ; For conditions of distribution and use, see copyright notice in jsimdext.inc
10 ; 10 ;
11 ; [TAB8] 11 ; [TAB8]
12 12
13 ; Each IDCT routine is responsible for range-limiting its results and 13 ; Each IDCT routine is responsible for range-limiting its results and
14 ; converting them to unsigned form (0..MAXJSAMPLE). The raw outputs could 14 ; converting them to unsigned form (0..MAXJSAMPLE). The raw outputs could
15 ; be quite far out of range if the input data is corrupt, so a bulletproof 15 ; be quite far out of range if the input data is corrupt, so a bulletproof
16 ; range-limiting step is required. We use a mask-and-table-lookup method 16 ; range-limiting step is required. We use a mask-and-table-lookup method
17 ; to do the combined operations quickly. 17 ; to do the combined operations quickly.
18 ; 18 ;
19 %define RANGE_MASK (MAXJSAMPLE * 4 + 3) ; 2 bits wider than legal samples 19 %define RANGE_MASK (MAXJSAMPLE * 4 + 3) ; 2 bits wider than legal samples
20 20
21 %define ROW(n,b,s)» » ((b)+(n)*(s)) 21 %define ROW(n,b,s) ((b)+(n)*(s))
22 %define COL(n,b,s)» » ((b)+(n)*(s)*DCTSIZE) 22 %define COL(n,b,s) ((b)+(n)*(s)*DCTSIZE)
23 23
24 %define DWBLOCK(m,n,b,s)» ((b)+(m)*DCTSIZE*(s)+(n)*SIZEOF_DWORD) 24 %define DWBLOCK(m,n,b,s) ((b)+(m)*DCTSIZE*(s)+(n)*SIZEOF_DWORD)
25 %define MMBLOCK(m,n,b,s)» ((b)+(m)*DCTSIZE*(s)+(n)*SIZEOF_MMWORD) 25 %define MMBLOCK(m,n,b,s) ((b)+(m)*DCTSIZE*(s)+(n)*SIZEOF_MMWORD)
26 %define XMMBLOCK(m,n,b,s)» ((b)+(m)*DCTSIZE*(s)+(n)*SIZEOF_XMMWORD) 26 %define XMMBLOCK(m,n,b,s) ((b)+(m)*DCTSIZE*(s)+(n)*SIZEOF_XMMWORD)
27 27
28 ; -------------------------------------------------------------------------- 28 ; --------------------------------------------------------------------------
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