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authorMichael Vrhel <michael.vrhel@artifex.com>2013-05-30 15:48:33 -0700
committerMichael Vrhel <michael.vrhel@artifex.com>2013-05-30 15:48:33 -0700
commit483e100c06e647d8ba2d68beef09c1c241fd328d (patch)
treed54b32de79ac892571cfda81704d51f8ded1676e
parent69cce78d20f9ee34954812e72ad6f3e4bf085374 (diff)
downloadghostpdl-483e100c06e647d8ba2d68beef09c1c241fd328d.tar.gz
Addition of ETS code and project into gs/toolbin/halftone
Diffstat
-rw-r--r--gs/toolbin/halftone/ETS/COPYING.txt340
-rw-r--r--gs/toolbin/halftone/ETS/Makefile_avec6
-rw-r--r--gs/toolbin/halftone/ETS/Makefile_sse29
-rw-r--r--gs/toolbin/halftone/ETS/README.txt247
-rw-r--r--gs/toolbin/halftone/ETS/_eb_sse2.s344
-rw-r--r--gs/toolbin/halftone/ETS/build.bat3
-rw-r--r--gs/toolbin/halftone/ETS/eb_avec.c691
-rw-r--r--gs/toolbin/halftone/ETS/eb_avec.h44
-rw-r--r--gs/toolbin/halftone/ETS/eb_sse2.s344
-rw-r--r--gs/toolbin/halftone/ETS/ei03.pdfbin0 -> 108353 bytes
-rw-r--r--gs/toolbin/halftone/ETS/ets.c900
-rw-r--r--gs/toolbin/halftone/ETS/ets.h93
-rw-r--r--gs/toolbin/halftone/ETS/ipview.html386
-rw-r--r--gs/toolbin/halftone/ETS/test_ets.c855
-rw-r--r--gs/toolbin/halftone/ETS/tm.h4099
-rw-r--r--gs/toolbin/halftone/ETS/win32/ETS.sln20
-rw-r--r--gs/toolbin/halftone/ETS/win32/ETS.vcproj196
17 files changed, 8577 insertions, 0 deletions
diff --git a/gs/toolbin/halftone/ETS/COPYING.txt b/gs/toolbin/halftone/ETS/COPYING.txt
new file mode 100644
index 000000000..d60c31a97
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/COPYING.txt
@@ -0,0 +1,340 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
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+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ Everyone is permitted to copy and distribute verbatim copies
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diff --git a/gs/toolbin/halftone/ETS/Makefile_avec b/gs/toolbin/halftone/ETS/Makefile_avec
new file mode 100644
index 000000000..61ffa5eb3
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/Makefile_avec
@@ -0,0 +1,6 @@
+LDLIBS = -lm
+CFLAGS = -faltivec -g -Wall -Wmissing-prototypes
+LDFLAGS = -g
+
+
+test_evenbetter: test_evenbetter.o evenbetter-rll.o eb_avec.o
diff --git a/gs/toolbin/halftone/ETS/Makefile_sse2 b/gs/toolbin/halftone/ETS/Makefile_sse2
new file mode 100644
index 000000000..882f32d94
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/Makefile_sse2
@@ -0,0 +1,9 @@
+LDLIBS = -lm
+CFLAGS = -g -O2 -Wall -Wmissing-prototypes
+LDFLAGS = -g
+
+test_evenbetter: test_evenbetter.o evenbetter-rll.o eb_sse2.o
+
+eb_sse2.o: eb_sse2.s
+ nasm $^ -f elf
+
diff --git a/gs/toolbin/halftone/ETS/README.txt b/gs/toolbin/halftone/ETS/README.txt
new file mode 100644
index 000000000..a24ceefae
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/README.txt
@@ -0,0 +1,247 @@
+Release notes ETS version 138
+26 Apr 2006
+Copyright 2000-2010 Artifex Sotware Inc.
+
+This version of ETS is for commercial licensees and is governed by the
+licensing agreement between Artifex Software and the licensee. Please
+contact mailto://sales@artifex.com for information on licensing.
+
+This is the latest unified release of Even Tone Screening. The core
+ETS algorithm has been highly tuned for modern inkjet printers such as
+the latest EPSON seven color devices. In addition, there are alternate
+versions of the core screening algorithm written for both Altivec
+(G4/PPC 970) and SSE2 (Pentium 4) instruction sets. The quality of the
+results with assembly speedup is comparable, but will not be
+bit-identical to the C code.
+
+
+README for Even Better Screening
+
+EBS is the newest refinement of Even Toned Screening. It is based on
+the same fundamental algorithms as ETS, and adds several interesting
+features.
+
+1. It's possible to screen all planes in tandem, rather than screening
+each plane independent. The result is a more even distribution of
+inks, and an avoidance of "interference patterns" between similar fine
+structure in the planes.
+
+2. The number of levels of output is adjustable at runtime. Most
+modern inkjets support multiple drop sizes, and the number of discrete
+drop sizes seems to be increasing.
+
+3. Dot aspect ratios of 1:1, 2:1, and 4:1 are directly supported.
+
+4. An option exists to apply Even Toned smoothing to shadow dots as
+well as highlight dots. In print modes where individual white dots
+in the shadow areas are visible, this avoids wormy patterns. It is
+a runtime option because there is a speed penalty. [ Note: this
+option not fully supported in the current release ]
+
+5. More parameters are tunable at runtime, including the amplitude of
+added random noise, and the scale for the Even Toned output dependent
+feedback signal.
+
+Some usage tips:
+
+The default parameters for even_c1_scale, rand_scale, and do_shadows
+are all 0, and should give good results. The reasonable range for
+rand_scale is about -4 .. 3. Higher values result in more randomness.
+The effects should be quite easy to see. even_c1_scale produces a more
+subtle effect. Values of -1 or -2 should produce slightly less regular
+patterns in highlights. This might be a good idea on printers with
+poor accuracy between passes, for example in bidirectional modes.
+As mentioned above, set do_shadows to 1 if wormy patterns are visible
+in shadows. At high resolutions on most inkjet printers, the dots are
+so close together that individual white pixels cannot be seen.
+
+The planes in the call to even_better_line() should be sorted in
+darkest-to-lightest order, for example K, C, M, c, m, Y. The
+strengths[] parameter should be an array of approximate darkness
+values for the inks, for example { 128, 50, 50, 25, 25, 10 }. It
+might be worth fiddling with the strength parameters.
+
+
+Compiling SSE2
+
+To enable SSE2 in evenbetter-rll.c, enable the #define USE_AVEC
+conditional compile.
+
+The SSE2 optimized code is in the assembly language file eb_sse2.s.
+In addition, I've included two win32-format object files, with and
+without the leading underscore. I believe the former is the one to use
+for both MS and Watcom compilers.
+
+You can use the NASM tool to reassemble the eb_sse2.s file. Use the
+following command line:
+
+nasm eb_sse2.s -f win32
+
+Most compilers will need an additional underscore prefix in front of
+the global symbols. There's an _eb_sse2.s file that's the same as
+eb_sse2.s except for this change, and it can be assembled using the
+same command line as above, just with _eb_sse2.s as the filename.
+
+The included Makefile_sse2 will compile the test_evenbetter executable
+on Linux platforms. This utility acts as a pipe and converts pgm to
+pgm.
+
+
+Release notes for 2003-10-21 Altivec-optimized EvenBetter code drop
+
+1. Compiling
+
+To enable Altivec in evenbetter-rll.c, enable the #define USE_AVEC
+conditional compile.
+
+The Altivec optimized code is in the C-language file eb_avec.c, using
+the Altivec intrinsics. Most up-to-date compilers should have support
+for this. With GCC, use the following command line:
+
+gcc -faltivec -O2 -Wall -Wmissing-prototypes -c -o eb_avec.o eb_avec.c
+
+Note that the -O3 option was tested and did not succeed, at least on
+GCC 3.3, build 1435.
+
+On other compilers, it may be necessary to define the HAVE_ALTIVEC_H
+preprocessor macro.
+
+The included Makefile_avec will compile the test_evenbetter executable
+on OS X platforms. This utility acts as a pipe and converts pgm to
+pgm.
+
+2. Code changes
+
+For the most part, this code uses the same API as before. However,
+there is one important change: destination buffers _must_ be aligned
+to 16-byte boundaries, and should also have an additional 16 bytes of
+padding at the end.
+
+I've provided eb_malloc_aligned() and eb_free_aligned() as handy
+utility functions for allocating aligned memory blocks. See the
+allocation of "obuf" in the sample code (test_evenbetter.c) for an
+example.
+
+3. Performance and quality
+
+Barring bugs, quality should be almost identical to the scalar
+version.
+
+I did not implement the test for G4 capability, as it's fairly
+dependent on platform specifics. Currently, G4 is always assumed,
+so the code is likely to crash when run on G3's. To fix this,
+edit the line "using_vectors = 1;" so that vectors are only enabled
+when the G4/G5 is detected. See:
+
+http://developer.apple.com/hardware/ve/g3_compatibility.html
+
+Performance is most optimal when the number of planes is a multiple of
+4. Screening 5 planes will take about the same time as screening 8.
+
+
+Tone-dependent randomness scaling
+
+As of version 134, ETS can accept lookup tables to control the tone-
+dependent randomness scaling. If you do not wish to use this feature,
+you must set the new rand_scale_luts field of EvenBetterParams to
+NULL.
+
+Otherwise, rand_scale_luts has the same layout as luts - an array of
+pointers, one for each plane, to int arrays of size ET_SRC_MAX + 1.
+Each value of the array corresponds to one input tone level; in general,
+if you change the luts, you'll want to change the rand_scale_luts
+accordingly.
+
+The nominal value is 65536, which is a fairly small level of
+randomness. In general, gray values near round rational numbers (1/2,
+1/3, etc.) will need higher levels of randomness in order to avoid
+repeating patterns. The current default, as computed in
+eb_compute_randshift, peaks at 2 << 19 for 1/4 and 1/2, 2 << 18 for
+1/3, and 2 << 17 for 1/6 and 1/9.
+
+Note also that even when using the rand_scale_luts, the rand_scale
+parameter still has the effect of globally scaling the randomness
+value. Each increment by one of rand_scale is equivalent to doubling
+the values in the rand_scale luts. simultaneously doubling the
+rand_scale_lut values and decreasing rand_scale by 1 has no effect.
+
+To really fine-tune the tone-dependent randomness for a device, we
+recommend running grayscale test files with several different
+constant values for the luts, then visually choosing the best value
+for each grayscale value in the test file. Different devices will be
+sensitive to different patterns, depending on the details of the
+weaving.
+
+Lastly, keep in mind that the randomness scaling is quantized to
+powers of two in the scalar code, but is smoothly variable in the
+vector versions.
+
+
+Notes on per-channel even_c1_scale settings
+
+As of version 135, this code supports per-channel setting of
+even_c1_scale, as a way to control artifacts in "dirty highlights".
+Recommended values are -2 for full-strength inks for which light
+variants exist (magenta, cyan, and black on EPSON 7-color printer),
+and 0 for all other inks.
+
+
+Notes on mseveneighths
+
+The eb_avec vector version contains an experimental workaround for
+problems in "dirty highlights". It is disabled by default, but can
+easily be enabled by uncommenting these two lines in eb_avec.c:
+
+ // f_4 = vec_abs(f_3);
+ // f_3 = vec_madd(f_4, mseveneighths, f_3);
+
+The values in mseveneighths in eb_avec.c can also be adjusted -
+while the current value is -.875, values of -.90 or -.95 may be
+more effective in controlling the dirty highlights problem. However,
+values too near -1 seem to create other artifacts.
+
+Pending feedback from users, this experimental feature will either
+be removed from all versions, or added to all versions.
+
+
+Partial version history
+
+Version 138 contains a fix to eb_malloc_aligned for crashes when the
+base allocator is aligned to 4-byte but not 8-byte boundaries. Also,
+the .obj files for eb_sse2.s are updated, while in some 137 tarballs
+they were stale.
+
+Version 137 mostly contains small changes to the vector code to make
+it more like the scalar version.
+
+[There was never a consistent 136 release, although some code did go
+out with that version number]
+
+Version 135 adds per-channel control of even_c1_scale.
+
+Version 134 has tone-dependent randomness scaling.
+
+Version 133 has some fixes to make the code compile in C++.
+
+Version 132 fixes some improperly merged files in the 131 release.
+
+Version 131 contains a fix for a subtle problem in the noisy highlight
+change in 130, as well as more robust support for > 8bpp deep images
+on vector platforms.
+
+Version 130 contains a quality improvement in noisy highlight regions.
+
+Version 129 contains performance tuning for the SSE2 implementation.
+
+Version 128 contains a significant speedup in the prep (Altivec only),
+specialized to 8-but LUT's with gamma 1.0, 1.8, or 2.0. There is a new
+"gamma" parameter to enable it - a value of 0.0 uses the old LUT-based
+code.
+
+In addition, make sure the input buffer is allocated with 16-byte
+alignment, and is also padded up to a size which is a multiple of 16
+bytes.
+
+This version also unifies the SSE2 release. To enable, undefine
+USE_AVEC and define USE_SSE2 at the top of evenbetter-rll.c.
+
diff --git a/gs/toolbin/halftone/ETS/_eb_sse2.s b/gs/toolbin/halftone/ETS/_eb_sse2.s
new file mode 100644
index 000000000..b75f6eeed
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/_eb_sse2.s
@@ -0,0 +1,344 @@
+;;; Implementation of Even Better core in SSE2 instruction set
+
+ struc ebctx
+.xs resd 1
+.iir_line resd 1
+.r_line resd 1
+.a_line resd 1
+.b_line resd 1
+.dummy resd 3
+.luts resd 4
+.e resb 16
+.e_i_1 resb 16
+.r resb 16
+.a resb 16
+.b resb 16
+.ones resb 16
+.twos resb 16
+.aspect2 resb 16
+.ehi resd 4
+.elo resd 4
+.ohi resd 4
+.r_mul resd 4
+.kernel resd 4
+.seed1 resd 4
+.seed2 resd 4
+.tmmat resd 4
+.y resd 4
+ endstruc
+
+ struc srcbuf
+.im resd 64 ; image in floating pt
+.rb resd 64 ; 0.5 - rb_lut, in floating pt
+.rs resd 64 ; scale for randomness
+ endstruc
+
+;;; some of the optimization is tricky. For a = c ? a : b, we write:
+;;; pandn a, c ; a = (~a & c)
+;;; por b, c ; b = (b | c)
+;;; pandn a, b ; a = (~(~a & c)) & (b | c)
+;;; For the converse, a = c ? b : a, we write:
+;;; pxor b, a ; b = (a ^ b)
+;;; pand b, c ; b = (a ^ b) & c
+;;; pxor a, b ; a = a ^ ((a ^ b) & c)
+
+ global _eb_test_sse2
+_eb_test_sse2:
+ push ebx
+ mov eax, 1
+ cpuid
+ mov eax, edx
+ shr eax, 26
+ and eax, byte 1
+ jz eb_test_sse2_1
+
+eb_test_sse2_1:
+ pop ebx
+ ret
+
+ global _eb_sse2_set_daz
+_eb_sse2_set_daz:
+ sub esp, 4
+ stmxcsr [esp]
+ mov eax, [esp]
+ or word [esp], 0x8040
+ ldmxcsr [esp]
+ add esp, 4
+ ret
+
+ global _eb_sse2_restore_daz
+_eb_sse2_restore_daz:
+ ldmxcsr [esp + 4]
+ ret
+
+ global _eb_sse2_core
+_eb_sse2_core:
+;;; screen one block of 16 pixels, 4 planes
+ struc args
+.header resb 8
+.ctx resd 1 ; context
+.destbuf resd 1 ; dest buffers
+.srcbuf resd 1 ; source buffer struct
+.offset resd 1 ; offset (in pixels)
+.tmbase resd 1 ; base addr of threshold mod matrix
+ endstruc
+ push ebp
+ mov ebp, esp
+ push ebx
+ push edi
+ push esi
+
+ struc frame
+.obuf resb 64
+ endstruc
+ sub esp, frame_size
+;;; align esp to 128-bit boundary
+ and esp, byte -0x10
+
+ mov eax, [ebp + args.ctx]
+ mov ebx, [ebp + args.srcbuf]
+ mov ecx, 0
+ mov edx, [ebp + args.offset]
+ shl edx, 4
+ mov edi, [eax + ebctx.iir_line]
+
+ movaps xmm6, [eax + ebctx.e]
+ movdqa xmm4, [eax + ebctx.r]
+ movdqa xmm0, [eax + ebctx.a]
+ movdqa xmm1, [eax + ebctx.b]
+
+eb_sse2_core1:
+;;; pixel loop
+ ;; invariant: xmm4 = r, xmm0 = a, xmm1 = b
+ mov esi, [eax + ebctx.r_line]
+ paddd xmm4, xmm0
+ movdqa xmm3, [esi + edx] ; r[i]
+ movdqa xmm2, xmm3
+ movaps xmm7, [eax + ebctx.e_i_1]
+ pcmpgtd xmm3, xmm4 ; xmm3 is ones if r + a < rline[x]
+ mov esi, [eax + ebctx.a_line]
+ pxor xmm4, xmm2
+ movdqa xmm5, [esi + edx] ; a[i]
+ pand xmm4, xmm3
+ paddd xmm0, [eax + ebctx.twos]
+ pxor xmm2, xmm4 ; r = ... ? r + a : r[i]
+ movdqa [eax + ebctx.r], xmm2
+ pandn xmm0, xmm3
+ mov esi, [eax + ebctx.b_line]
+ por xmm5, xmm3
+
+ pandn xmm0, xmm5 ; a = ... ? a + 2 : a[i]
+ movdqa xmm5, [esi + edx] ; b[i]
+ pandn xmm1, xmm3
+ movdqa [eax + ebctx.a], xmm0
+ por xmm5, xmm3
+ movaps xmm3, [eax + ebctx.kernel]
+ pandn xmm1, xmm5 ; b = ... ? b : b[i]
+ movdqa [eax + ebctx.b], xmm1
+
+ ;; xmm2 = r (updated)
+
+
+ mov esi, [ebp + args.tmbase]
+ xor eax, eax
+ mov al, [esi + ecx]
+ shl eax, 24 ; could avoid this by changing the rand lut
+ cvtsi2ss xmm4, eax
+ pshufd xmm4, xmm4, 0
+ ;; note: if we swapped eax and esi, we could probably avoid this
+ mov eax, [ebp + args.ctx]
+
+ ;; compute FS kernel
+ pshufd xmm1, xmm3, 0x00 ; 1/16
+ mulps xmm1, xmm7
+ movaps xmm7, [edi + edx] ; e_i
+ pshufd xmm5, xmm3, 0xff ; 7/16
+ mulps xmm6, xmm5
+ cvtdq2ps xmm2, xmm2
+ mulps xmm2, [eax + ebctx.r_mul]
+ addps xmm6, xmm1
+ mulps xmm4, [ebx + srcbuf.rs]
+ pshufd xmm0, xmm3, 0xaa ; 5/16
+ mulps xmm0, xmm7
+ addps xmm2, [ebx + srcbuf.rb]
+ pshufd xmm3, xmm3, 0x55 ; 3/16
+ movaps [eax + ebctx.e_i_1], xmm7
+ addps xmm0, xmm6
+ movdqa xmm5, [ebx + srcbuf.im]
+ mulps xmm3, [edi + edx + 0x10] ; e[i+1]
+ addps xmm2, xmm4
+
+ addps xmm0, xmm3
+
+ movaps xmm6, xmm0
+ addps xmm0, xmm2
+ minps xmm0, [eax + ebctx.ehi]
+ pxor xmm4, xmm4
+ maxps xmm0, [eax + ebctx.elo]
+ addps xmm0, xmm5
+ subps xmm2, xmm2
+ minps xmm0, [eax + ebctx.ohi]
+ addps xmm6, xmm5
+ maxps xmm0, xmm2
+ cvttps2dq xmm1, xmm0 ; this is where the actual quantization is
+ cmpneqps xmm2, xmm5
+ pand xmm1, xmm2 ; force 0 if im == 0.0
+ cvtdq2ps xmm3, xmm1
+ subps xmm6, xmm3
+ movdqa xmm0, [eax + ebctx.a]
+ pcmpeqd xmm4, xmm1 ; 1's when pixel is 0
+ ;movdqa xmm1, [eax + ebctx.r] ; for visualizing r buf when testing
+ movaps xmm7, [edi + edx]
+ packssdw xmm1, xmm1
+ movaps [edi + edx], xmm6
+ packuswb xmm1, xmm1
+ movd [esp + ecx * 4], xmm1
+
+ ;; update r
+ mov esi, [eax + ebctx.a_line]
+ movdqa xmm2, [eax + ebctx.ones]
+ pandn xmm0, xmm4
+ por xmm2, xmm4
+ movdqa xmm1, [eax + ebctx.b]
+ pandn xmm0, xmm2
+ movdqa [esi + edx], xmm0
+ mov esi, [eax + ebctx.b_line]
+ pandn xmm1, xmm4
+ movdqa xmm2, [eax + ebctx.aspect2]
+ por xmm2, xmm4
+ pand xmm4, [eax + ebctx.r]
+ pandn xmm1, xmm2
+ movdqa [esi + edx], xmm1
+ add ebx, byte 0x10
+ mov esi, [eax + ebctx.r_line]
+ movdqa [esi + edx], xmm4
+ add edx, byte 0x10
+ add ecx, byte 1
+
+ cmp ecx, byte 0x10
+ jne eb_sse2_core1
+
+ movdqa [eax + ebctx.r], xmm4
+ movdqa [eax + ebctx.a], xmm0
+ movdqa [eax + ebctx.b], xmm1
+ movaps [eax + ebctx.e], xmm6
+
+;;; repack output
+ mov eax, [ebp + args.destbuf]
+ mov ecx, [ebp + args.offset]
+ mov ebx, [eax]
+ mov edx, [eax + 4]
+ mov esi, [eax + 8]
+ mov edi, [eax + 12]
+ movdqa xmm0, [esp] ; 3d3c3b3a2d2c2b2a1d1c1b1a0d0c0b0a
+ ;; 0 1 2 3
+ movdqa xmm4, xmm0
+ movdqa xmm2, [esp + 0x20]
+ punpckhbw xmm4, xmm2 ; Bd3dBc3cBb3cBa3aAd2dAc2cAb2bAa2a
+ punpcklbw xmm0, xmm2 ; 9d1d9c1c9b1b9a1a8d0d8c0c8b0b8a0a
+ movdqa xmm1, [esp + 0x10] ; 7d7c7b7a6d6c6b6a5d5c5b5a4d4c4b4a
+ movdqa xmm2, xmm1
+ movdqa xmm3, [esp + 0x30]
+ punpcklbw xmm2, xmm3 ; Dd5dDc5cDb5cDa5aCd4dCc4cCb4bCa4a
+ punpckhbw xmm1, xmm3 ; Fd7dFc7cFb7bFa7aEd6dEc6cEb6bEa6a
+ ;; 0 4 2 1
+ movdqa xmm3, xmm0
+ punpckhbw xmm3, xmm2
+ punpcklbw xmm0, xmm2
+ movdqa xmm2, xmm4
+ punpcklbw xmm4, xmm1
+ punpckhbw xmm2, xmm1
+ ;; 0 3 4 2
+ movdqa xmm1, xmm0
+ punpckhbw xmm1, xmm4
+ punpcklbw xmm0, xmm4
+ movdqa xmm4, xmm3
+ punpcklbw xmm4, xmm2
+ punpckhbw xmm3, xmm2
+ ;; 0 1 4 3
+ movdqa xmm2, xmm0
+ punpckhbw xmm2, xmm4
+ movdqa [edx + ecx], xmm2
+ punpcklbw xmm0, xmm4
+ movdqa [ebx + ecx], xmm0 ; FaEaDaCaBaAa9a8a7a6a5a4a3a2a1a0a
+ movdqa xmm4, xmm1
+ punpcklbw xmm4, xmm3
+ movdqa [esi + ecx], xmm4
+ punpckhbw xmm1, xmm3
+ movdqa [edi + ecx], xmm1
+ ;; 0 2 4 1
+
+ mov esi, [ebp - 12]
+ mov edi, [ebp - 8]
+ mov ebx, [ebp - 4]
+ leave
+ ret
+
+ global _eb_sse2_rev_rs
+_eb_sse2_rev_rs:
+ struc rargs
+.header resb 8
+.ctx resd 1 ; context
+.offset resd 1 ; offset (in pixels)
+ endstruc
+ push ebp
+ mov ebp, esp
+ push edi
+ push esi
+
+ mov eax, [ebp + rargs.ctx]
+ mov ecx, [ebp + rargs.offset]
+ shl ecx, 4
+ mov esi, [eax + ebctx.r_line]
+ add esi, ecx
+ mov edi, [eax + ebctx.a_line]
+ add edi, ecx
+ mov edx, [eax + ebctx.b_line]
+ add edx, ecx
+ movdqa xmm0, [eax + ebctx.r]
+ movdqa xmm1, [eax + ebctx.a]
+ movdqa xmm7, [eax + ebctx.aspect2]
+ paddd xmm7, xmm7
+ movdqa xmm2, [eax + ebctx.b]
+ mov ecx, 0x10
+eb_rev_rs1:
+ movdqa xmm3, [esi] ; pr[i]
+ paddd xmm0, xmm1
+ movdqa xmm4, [edx] ; pb[i]
+ movdqa xmm6, xmm4
+ movdqa xmm5, xmm0
+ paddd xmm6, xmm3
+ paddd xmm5, xmm2
+ pcmpgtd xmm5, xmm6 ; 1's if rv + bv + av > pr[i] + pb[i]
+ paddd xmm1, [eax + ebctx.twos]
+ pxor xmm3, xmm0
+ pxor xmm4, xmm2
+ pand xmm3, xmm5
+ pand xmm4, xmm5
+ pxor xmm0, xmm3
+ pxor xmm2, xmm4
+ movdqa xmm4, [edi] ; pa[i]
+ movdqa xmm3, xmm0
+ pxor xmm4, xmm1
+ movdqa xmm6, xmm2
+ paddd xmm3, xmm2
+ paddd xmm6, xmm7
+ movdqa [esi], xmm3 ; pr[i] = rv + bv
+ pand xmm4, xmm5
+ movdqa [edx], xmm6 ; pb[i] = bv + 2 * aspect_2
+ pxor xmm1, xmm4
+ movdqa [edi], xmm1 ; pa[i] = av
+ sub edi, byte 0x10
+ sub edx, byte 0x10
+ sub esi, byte 0x10
+ sub ecx, byte 1
+ jne eb_rev_rs1
+ movdqa [eax + ebctx.r], xmm0
+ movdqa [eax + ebctx.a], xmm1
+ movdqa [eax + ebctx.b], xmm2
+
+ pop esi
+ pop edi
+ leave
+ ret
+
diff --git a/gs/toolbin/halftone/ETS/build.bat b/gs/toolbin/halftone/ETS/build.bat
new file mode 100644
index 000000000..2542a9b45
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/build.bat
@@ -0,0 +1,3 @@
+cl -c test_evenbetter.c
+cl /O2 /DUSE_SSE2 -c evenbetter-rll.c
+link /SUBSYSTEM:CONSOLE /OUT:test_evenbetter.exe test_evenbetter.obj evenbetter-rll.obj _eb_sse2.obj /NODEFAULTLIB:LIBC.lib /NODEFAULTLIB:LIBCMTD.lib LIBCMT.lib shell32.lib comdlg32.lib gdi32.lib user32.lib winspool.lib advapi32.lib
diff --git a/gs/toolbin/halftone/ETS/eb_avec.c b/gs/toolbin/halftone/ETS/eb_avec.c
new file mode 100644
index 000000000..92ac87b41
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/eb_avec.c
@@ -0,0 +1,691 @@
+#ifdef HAVE_ALTIVEC_H
+#include <altivec.h>
+#endif
+
+#include <stdio.h> /* for FILE, just so we can include evenbetter-rll.h" */
+#include "evenbetter-rll.h" /* for ET_SrcPixel */
+#include "eb_avec.h"
+
+void
+eb_avec_core(eb_ctx_avec *ctx, vector unsigned char *destbuf[4],
+ eb_srcbuf *srcbuf, int offset, const signed char *tmbase)
+{
+ vector float e;
+ vector float e_i_1;
+ vector unsigned int r;
+ vector unsigned int a;
+ vector unsigned int b;
+ vector unsigned int *r_line = ctx->r_line;
+ vector unsigned int *a_line = ctx->a_line;
+ vector unsigned int *b_line = ctx->b_line;
+ vector unsigned int r_i;
+ vector unsigned int a_i;
+ vector unsigned int b_i;
+ vector unsigned int u_0, u_1;
+ vector unsigned short u16_0;
+ vector unsigned char u8_0, u8_1, u8_2, u8_3, u8_4, u8_5, u8_6, u8_7;
+ vector bool int b_0, b_1;
+ vector float f_0, f_1, f_2, f_3, f_4;
+ vector float *iir_line;
+ vector float zero = (vector float) vec_splat_u32(0);
+ vector float kernel = ctx->kernel;
+ vector float r_mul = ctx->r_mul;
+ vector float elo = ctx->elo;
+ vector float ehi = ctx->ehi;
+ vector float ohi = ctx->ohi;
+ vector unsigned int aspect2 = ctx->aspect2;
+ vector unsigned int ones = vec_splat_u32(1);
+ vector unsigned int twos = vec_splat_u32(2);
+ vector float mseveneighths = { -0.875, -0.875, -0.875, -0.875 };
+ vector float im;
+ vector float rb;
+ vector float rs;
+ vector float e_q;
+ vector unsigned char tmpbuf[4];
+ int i, off;
+ int ctrl_w = 0x10100010;
+ vector signed char tmvec;
+ vector unsigned char tmperm;
+
+ e = ctx->e;
+ e_i_1 = ctx->e_i_1;
+ r = ctx->r;
+ a = ctx->a;
+ b = ctx->b;
+ off = offset;
+ iir_line = ctx->iir_line + off;
+
+ vec_dst(&a_line[off], ctrl_w, 0);
+ vec_dst(&b_line[off], ctrl_w, 1);
+ vec_dst(&r_line[off], ctrl_w, 2);
+ vec_dst(iir_line, ctrl_w + 0x10000, 3);
+
+ for (i = 0; i < 16; i++) {
+ r_i = r_line[off];
+ u_0 = vec_adds(r, a);
+ b_0 = vec_cmpgt(r_i, u_0);
+ r = vec_sel(r_i, u_0, b_0);
+ a_i = a_line[off];
+ u_1 = vec_adds(a, twos);
+ a = vec_sel(a_i, u_1, b_0);
+ b_i = b_line[off];
+ b = vec_sel(b_i, b, b_0);
+
+ /* compute FS kernel */
+ im = srcbuf->im[i];
+ rb = srcbuf->rb[i];
+ rs = srcbuf->rs[i];
+ f_3 = vec_ctf(r, 0);
+ f_3 = vec_madd(f_3, r_mul, rb);
+ // f_4 = vec_abs(f_3);
+ // f_3 = vec_madd(f_4, mseveneighths, f_3);
+ f_1 = vec_splat(kernel, 3);
+ e = vec_madd(f_1, e, zero);
+ f_1 = vec_splat(kernel, 0);
+ e = vec_madd(f_1, e_i_1, e);
+ e_i_1 = iir_line[0];
+ f_1 = vec_splat(kernel, 1);
+ f_2 = iir_line[1];
+ e = vec_madd(f_1, f_2, e);
+ f_1 = vec_splat(kernel, 2);
+ e = vec_madd(f_1, e_i_1, e);
+
+ /* add threshold modulation */
+ tmvec = vec_lde(i, tmbase);
+ tmperm = vec_lvsl(i, tmbase);
+ tmvec = vec_perm(tmvec, tmvec, tmperm);
+ tmvec = vec_splat(tmvec, 0);
+ f_0 = vec_ctf((vector signed int)tmvec, 0);
+ e_q = vec_madd(f_0, rs, e);
+ e_q = vec_add(e_q, f_3);
+
+ e_q = vec_min(e_q, ehi);
+ e_q = vec_max(e_q, elo);
+ e_q = vec_add(e_q, im);
+ e_q = vec_min(e_q, ohi);
+
+ u_0 = vec_ctu(e_q, 0); /* quantization step */
+ b_0 = vec_cmpeq(im, zero);
+ u_0 = vec_andc(u_0, b_0); /* force 0 if im == 0.0 */
+ u16_0 = vec_packs(u_0, u_0);
+ u8_0 = vec_packs(u16_0, u16_0);
+ vec_ste((vector unsigned int)u8_0, 0, &((unsigned int *)tmpbuf)[i]);
+ f_0 = vec_ctf(u_0, 0);
+ e = vec_add(e, im);
+ e = vec_sub(e, f_0);
+ iir_line[0] = e;
+
+ /* update r */
+ b_1 = vec_cmpeq(u_0, (vector unsigned int)zero);
+ a = vec_sel(ones, a, b_1);
+ b = vec_sel(aspect2, b, b_1);
+ r = vec_and(r, b_1);
+ a_line[off] = a;
+ b_line[off] = b;
+ r_line[off] = r;
+
+ iir_line++;
+ off++;
+ }
+ ctx->e = e;
+ ctx->e_i_1 = e_i_1;
+ ctx->r = r;
+ ctx->a = a;
+ ctx->b = b;
+
+ /* repack output */
+ u8_0 = tmpbuf[0]; /* 0a0b0c0d1a1b1c1d2a2b2c2d3a3b3c3d */
+ u8_1 = tmpbuf[1];
+ u8_2 = tmpbuf[2];
+ u8_3 = tmpbuf[3];
+ u8_4 = vec_mergeh(u8_0, u8_2); /* 0a8a0b8b0c8c0d8d1a9a1b8b1c8c1d8d */
+ u8_5 = vec_mergel(u8_0, u8_2); /* 2aAa... 3dBd */
+ u8_6 = vec_mergeh(u8_1, u8_3); /* 4aCa... 5dDd */
+ u8_7 = vec_mergel(u8_1, u8_3); /* 6aEa... 7dFd */
+ u8_0 = vec_mergeh(u8_4, u8_6); /* 0a4a8aCa0b4b8bCb... 8dCd */
+ u8_1 = vec_mergel(u8_4, u8_6); /* 1a5a9aDa0b5b9bDb... 9dDd */
+ u8_2 = vec_mergeh(u8_5, u8_7); /* 2a6aAaEa... AdEd */
+ u8_3 = vec_mergel(u8_5, u8_7); /* 3a7aBaFa.. . BdFd */
+ u8_4 = vec_mergeh(u8_0, u8_2); /* 0a2a4a6a8aAaCaEa... CbEb */
+ u8_5 = vec_mergel(u8_0, u8_2); /* 0c2c... CdEd */
+ u8_6 = vec_mergeh(u8_1, u8_3); /* 1a3a... DbFb */
+ u8_7 = vec_mergel(u8_1, u8_3); /* 1c3c... DdFd */
+ u8_0 = vec_mergeh(u8_4, u8_6); /* 0a1a2a3a... EaFa */
+ u8_1 = vec_mergel(u8_4, u8_6); /* 0b1b2b3b... EbFb */
+ u8_2 = vec_mergeh(u8_5, u8_7); /* 0c1c2c3c... EcFc */
+ u8_3 = vec_mergel(u8_5, u8_7); /* 0d1d2d3d... . EcFd */
+ destbuf[0][offset >> 4] = u8_0;
+ destbuf[1][offset >> 4] = u8_1;
+ destbuf[2][offset >> 4] = u8_2;
+ destbuf[3][offset >> 4] = u8_3;
+
+}
+
+void
+eb_avec_rev_rs(eb_ctx_avec *ctx, int offset)
+{
+ int i;
+ vector unsigned int *r_line = ctx->r_line;
+ vector unsigned int *a_line = ctx->a_line;
+ vector unsigned int *b_line = ctx->b_line;
+ vector unsigned int r;
+ vector unsigned int a;
+ vector unsigned int b;
+ vector unsigned int r_i;
+ vector unsigned int a_i;
+ vector unsigned int b_i;
+ vector unsigned int u_0, u_1, u_2, u_3, u_4, u_5;
+ vector unsigned int aspect2 = ctx->aspect2;
+ vector unsigned int twice_aspect2 = vec_add(aspect2, aspect2);
+ vector unsigned int twos = vec_splat_u32(2);
+ vector bool int b_0;
+ unsigned int ctrl_w = 0x1010fff0;
+
+ r = ctx->r;
+ a = ctx->a;
+ b = ctx->b;
+
+ vec_dst(&a_line[offset], ctrl_w, 0);
+ vec_dst(&b_line[offset], ctrl_w, 1);
+ vec_dst(&r_line[offset], ctrl_w, 2);
+
+ for (i = 0; i < 16; i++) {
+ r_i = r_line[offset];
+ a_i = a_line[offset];
+ b_i = b_line[offset];
+ u_0 = vec_adds(r, a);
+ u_1 = vec_adds(u_0, b);
+ u_2 = vec_adds(r_i, b_i);
+ b_0 = vec_cmpgt(u_2, u_1);
+ u_3 = vec_adds(a, twos);
+ r = vec_sel(r_i, u_0, b_0);
+ a = vec_sel(a_i, u_3, b_0);
+ b = vec_sel(b_i, b, b_0);
+ a_line[offset] = a;
+ u_4 = vec_adds(b, twice_aspect2);
+ b_line[offset] = u_4;
+ u_5 = vec_adds(r, b);
+ r_line[offset] = u_5;
+ offset--;
+ }
+ ctx->r = r;
+ ctx->a = a;
+ ctx->b = b;
+}
+
+/* Prepare a source buffer from 8-bit input. Return 0 if source is
+ all-zero. */
+int
+eb_avec_prep_srcbuf(eb_ctx_avec *ctx, int n_planes,
+ eb_srcbuf *srcbuf, const ET_SrcPixel *const *src,
+ int off)
+{
+ vector unsigned char c0, c1, c2, c3, c4, c5, c6, c7;
+ vector unsigned char zero = vec_splat_u8(0);
+ vector unsigned short s0, s1;
+ vector unsigned int u0;
+ vector float f0, f1;
+ vector bool int b0;
+ vector float imscale1 = ctx->imscale1;
+ vector float imscale2 = ctx->imscale2;
+ vector float rbmul = ctx->rbmul;
+ vector float rsbase = ctx->rsbase;
+ vector float onehalf = { 0.5, 0.5, 0.5, 0.5 };
+
+ c0 = ((vector unsigned char *)src[0])[off >> 4];
+ c1 = n_planes > 1 ? ((vector unsigned char *)src[1])[off >> 4] : zero;
+ c2 = n_planes > 2 ? ((vector unsigned char *)src[2])[off >> 4] : zero;
+ c3 = n_planes > 3 ? ((vector unsigned char *)src[3])[off >> 4] : zero;
+
+ /* check for zeros */
+ c4 = vec_or(c0, c1);
+ c5 = vec_or(c2, c3);
+ c4 = vec_or(c4, c5);
+ if (vec_all_eq(c4, zero))
+ return 0;
+
+ c4 = vec_mergeh(c0, c2); /* C0 Y0 .. C7 Y7 */
+ c5 = vec_mergeh(c1, c3); /* M0 K0 .. M7 K7 */
+ c6 = vec_mergel(c0, c2); /* C8 Y8 ... */
+ c7 = vec_mergel(c1, c3);
+
+ c0 = vec_mergeh(c4, c5); /* C0 M0 Y0 K0 ... C3 M3 Y3 K3 */
+
+ if (*((float *)&ctx->imscale2) == 0.0) {
+ s0 = (vector unsigned short)vec_mergeh(zero, c0);
+ s1 = (vector unsigned short)vec_mergel(zero, c0);
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[0] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[0] = (vector float)f0;
+ srcbuf->rs[0] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[1] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[1] = (vector float)f0;
+ srcbuf->rs[1] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[2] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[2] = (vector float)f0;
+ srcbuf->rs[2] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[3] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[3] = (vector float)f0;
+ srcbuf->rs[3] = (vector float)rsbase;
+
+ c0 = vec_mergel(c4, c5); /* C4 M4 Y4 K4 ... C7 M7 Y7 K7 */
+ s0 = (vector unsigned short)vec_mergeh(zero, c0);
+ s1 = (vector unsigned short)vec_mergel(zero, c0);
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[4] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[4] = (vector float)f0;
+ srcbuf->rs[4] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[5] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[5] = (vector float)f0;
+ srcbuf->rs[5] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[6] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[6] = (vector float)f0;
+ srcbuf->rs[6] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[7] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[7] = (vector float)f0;
+ srcbuf->rs[7] = (vector float)rsbase;
+
+ c0 = vec_mergeh(c6, c7); /* C8 M8 Y8 K8 ... Cb Mb Yb Kb */
+ s0 = (vector unsigned short)vec_mergeh(zero, c0);
+ s1 = (vector unsigned short)vec_mergel(zero, c0);
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[8] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[8] = (vector float)f0;
+ srcbuf->rs[8] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[9] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[9] = (vector float)f0;
+ srcbuf->rs[9] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[10] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[10] = (vector float)f0;
+ srcbuf->rs[10] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[11] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[11] = (vector float)f0;
+ srcbuf->rs[11] = (vector float)rsbase;
+
+ c0 = vec_mergel(c6, c7); /* Cc Mc Yc Kc ... Cf Mf Yf Kf */
+ s0 = (vector unsigned short)vec_mergeh(zero, c0);
+ s1 = (vector unsigned short)vec_mergel(zero, c0);
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[12] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[12] = (vector float)f0;
+ srcbuf->rs[12] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[13] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[13] = (vector float)f0;
+ srcbuf->rs[13] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[14] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[14] = (vector float)f0;
+ srcbuf->rs[14] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f0 = vec_madd(f0, imscale1, (vector float)zero);
+ srcbuf->im[15] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[15] = (vector float)f0;
+ srcbuf->rs[15] = (vector float)rsbase;
+ } else {
+ vector float foff = ctx->foff;
+ c0 = vec_nor(c0, c0);
+ s0 = (vector unsigned short)vec_mergeh(zero, c0);
+ s1 = (vector unsigned short)vec_mergel(zero, c0);
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[0] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[0] = (vector float)f0;
+ srcbuf->rs[0] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[1] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[1] = (vector float)f0;
+ srcbuf->rs[1] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[2] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[2] = (vector float)f0;
+ srcbuf->rs[2] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[3] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[3] = (vector float)f0;
+ srcbuf->rs[3] = (vector float)rsbase;
+
+ c0 = vec_mergel(c4, c5); /* C4 M4 Y4 K4 ... C7 M7 Y7 K7 */
+ c0 = vec_nor(c0, c0);
+ s0 = (vector unsigned short)vec_mergeh(zero, c0);
+ s1 = (vector unsigned short)vec_mergel(zero, c0);
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[4] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[4] = (vector float)f0;
+ srcbuf->rs[4] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[5] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[5] = (vector float)f0;
+ srcbuf->rs[5] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[6] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[6] = (vector float)f0;
+ srcbuf->rs[6] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[7] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[7] = (vector float)f0;
+ srcbuf->rs[7] = (vector float)rsbase;
+
+ c0 = vec_mergeh(c6, c7); /* C8 M8 Y8 K8 ... Cb Mb Yb Kb */
+ c0 = vec_nor(c0, c0);
+ s0 = (vector unsigned short)vec_mergeh(zero, c0);
+ s1 = (vector unsigned short)vec_mergel(zero, c0);
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[8] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[8] = (vector float)f0;
+ srcbuf->rs[8] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[9] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[9] = (vector float)f0;
+ srcbuf->rs[9] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[10] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[10] = (vector float)f0;
+ srcbuf->rs[10] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[11] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[11] = (vector float)f0;
+ srcbuf->rs[11] = (vector float)rsbase;
+
+ c0 = vec_mergel(c6, c7); /* Cc Mc Yc Kc ... Cf Mf Yf Kf */
+ c0 = vec_nor(c0, c0);
+ s0 = (vector unsigned short)vec_mergeh(zero, c0);
+ s1 = (vector unsigned short)vec_mergel(zero, c0);
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[12] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[12] = (vector float)f0;
+ srcbuf->rs[12] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s0);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[13] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[13] = (vector float)f0;
+ srcbuf->rs[13] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergeh((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[14] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[14] = (vector float)f0;
+ srcbuf->rs[14] = (vector float)rsbase;
+
+ u0 = (vector unsigned int)vec_mergel((vector unsigned short)zero, s1);
+ f0 = vec_ctf(u0, 8);
+ /* scale, do gamma here */
+ f1 = vec_rsqrte(f0);
+ f1 = vec_madd(f1, f0, (vector float)zero);
+ f1 = vec_nmsub(f1, imscale2, foff);
+ f0 = vec_nmsub(f0, imscale1, f1);
+ b0 = vec_cmpge(f0, (vector float)zero);
+ f0 = vec_sel(foff, f0, b0);
+ srcbuf->im[15] = f0;
+ f0 = vec_re(f0);
+ f0 = vec_madd(f0, rbmul, onehalf);
+ srcbuf->rb[15] = (vector float)f0;
+ srcbuf->rs[15] = (vector float)rsbase;
+ }
+
+ return 1;
+}
diff --git a/gs/toolbin/halftone/ETS/eb_avec.h b/gs/toolbin/halftone/ETS/eb_avec.h
new file mode 100644
index 000000000..fcdb56821
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/eb_avec.h
@@ -0,0 +1,44 @@
+typedef struct _eb_ctx_avec eb_ctx_avec;
+typedef struct _eb_srcbuf eb_srcbuf;
+
+struct _eb_ctx_avec {
+ int xs;
+ float *luts[4];
+ vector float *iir_line;
+ vector unsigned int *r_line;
+ vector unsigned int *a_line;
+ vector unsigned int *b_line;
+ char *skip_line;
+ vector float e;
+ vector float e_i_1;
+ vector unsigned int r;
+ vector unsigned int a;
+ vector unsigned int b;
+ vector unsigned int aspect2;
+ vector float ehi;
+ vector float elo;
+ vector float ohi;
+ vector float r_mul;
+ vector float kernel;
+ vector float imscale1;
+ vector float imscale2;
+ vector float foff;
+ vector float rbmul;
+ vector float rsbase;
+};
+
+struct _eb_srcbuf {
+ vector float im[16];
+ vector float rb[16];
+ vector float rs[16];
+};
+
+void eb_avec_core(eb_ctx_avec *ctx, vector unsigned char *destbuf[4],
+ eb_srcbuf *srcbuf, int offset, const signed char *tmbase);
+
+void eb_avec_rev_rs(eb_ctx_avec *ctx, int offset);
+
+int
+eb_avec_prep_srcbuf(eb_ctx_avec *ctx, int n_planes,
+ eb_srcbuf *srcbuf, const ET_SrcPixel *const *src,
+ int off);
diff --git a/gs/toolbin/halftone/ETS/eb_sse2.s b/gs/toolbin/halftone/ETS/eb_sse2.s
new file mode 100644
index 000000000..835e767ff
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/eb_sse2.s
@@ -0,0 +1,344 @@
+;;; Implementation of Even Better core in SSE2 instruction set
+
+ struc ebctx
+.xs resd 1
+.iir_line resd 1
+.r_line resd 1
+.a_line resd 1
+.b_line resd 1
+.dummy resd 3
+.luts resd 4
+.e resb 16
+.e_i_1 resb 16
+.r resb 16
+.a resb 16
+.b resb 16
+.ones resb 16
+.twos resb 16
+.aspect2 resb 16
+.ehi resd 4
+.elo resd 4
+.ohi resd 4
+.r_mul resd 4
+.kernel resd 4
+.seed1 resd 4
+.seed2 resd 4
+.tmmat resd 4
+.y resd 4
+ endstruc
+
+ struc srcbuf
+.im resd 64 ; image in floating pt
+.rb resd 64 ; 0.5 - rb_lut, in floating pt
+.rs resd 64 ; scale for randomness
+ endstruc
+
+;;; some of the optimization is tricky. For a = c ? a : b, we write:
+;;; pandn a, c ; a = (~a & c)
+;;; por b, c ; b = (b | c)
+;;; pandn a, b ; a = (~(~a & c)) & (b | c)
+;;; For the converse, a = c ? b : a, we write:
+;;; pxor b, a ; b = (a ^ b)
+;;; pand b, c ; b = (a ^ b) & c
+;;; pxor a, b ; a = a ^ ((a ^ b) & c)
+
+ global eb_test_sse2
+eb_test_sse2:
+ push ebx
+ mov eax, 1
+ cpuid
+ mov eax, edx
+ shr eax, 26
+ and eax, byte 1
+ jz eb_test_sse2_1
+
+eb_test_sse2_1:
+ pop ebx
+ ret
+
+ global eb_sse2_set_daz
+eb_sse2_set_daz:
+ sub esp, 4
+ stmxcsr [esp]
+ mov eax, [esp]
+ or word [esp], 0x8040
+ ldmxcsr [esp]
+ add esp, 4
+ ret
+
+ global eb_sse2_restore_daz
+eb_sse2_restore_daz:
+ ldmxcsr [esp + 4]
+ ret
+
+ global eb_sse2_core
+eb_sse2_core:
+;;; screen one block of 16 pixels, 4 planes
+ struc args
+.header resb 8
+.ctx resd 1 ; context
+.destbuf resd 1 ; dest buffers
+.srcbuf resd 1 ; source buffer struct
+.offset resd 1 ; offset (in pixels)
+.tmbase resd 1 ; base addr of threshold mod matrix
+ endstruc
+ push ebp
+ mov ebp, esp
+ push ebx
+ push edi
+ push esi
+
+ struc frame
+.obuf resb 64
+ endstruc
+ sub esp, frame_size
+;;; align esp to 128-bit boundary
+ and esp, byte -0x10
+
+ mov eax, [ebp + args.ctx]
+ mov ebx, [ebp + args.srcbuf]
+ mov ecx, 0
+ mov edx, [ebp + args.offset]
+ shl edx, 4
+ mov edi, [eax + ebctx.iir_line]
+
+ movaps xmm6, [eax + ebctx.e]
+ movdqa xmm4, [eax + ebctx.r]
+ movdqa xmm0, [eax + ebctx.a]
+ movdqa xmm1, [eax + ebctx.b]
+
+eb_sse2_core1:
+;;; pixel loop
+ ;; invariant: xmm4 = r, xmm0 = a, xmm1 = b
+ mov esi, [eax + ebctx.r_line]
+ paddd xmm4, xmm0
+ movdqa xmm3, [esi + edx] ; r[i]
+ movdqa xmm2, xmm3
+ movaps xmm7, [eax + ebctx.e_i_1]
+ pcmpgtd xmm3, xmm4 ; xmm3 is ones if r + a < rline[x]
+ mov esi, [eax + ebctx.a_line]
+ pxor xmm4, xmm2
+ movdqa xmm5, [esi + edx] ; a[i]
+ pand xmm4, xmm3
+ paddd xmm0, [eax + ebctx.twos]
+ pxor xmm2, xmm4 ; r = ... ? r + a : r[i]
+ movdqa [eax + ebctx.r], xmm2
+ pandn xmm0, xmm3
+ mov esi, [eax + ebctx.b_line]
+ por xmm5, xmm3
+
+ pandn xmm0, xmm5 ; a = ... ? a + 2 : a[i]
+ movdqa xmm5, [esi + edx] ; b[i]
+ pandn xmm1, xmm3
+ movdqa [eax + ebctx.a], xmm0
+ por xmm5, xmm3
+ movaps xmm3, [eax + ebctx.kernel]
+ pandn xmm1, xmm5 ; b = ... ? b : b[i]
+ movdqa [eax + ebctx.b], xmm1
+
+ ;; xmm2 = r (updated)
+
+
+ mov esi, [ebp + args.tmbase]
+ xor eax, eax
+ mov al, [esi + ecx]
+ shl eax, 24 ; could avoid this by changing the rand lut
+ cvtsi2ss xmm4, eax
+ pshufd xmm4, xmm4, 0
+ ;; note: if we swapped eax and esi, we could probably avoid this
+ mov eax, [ebp + args.ctx]
+
+ ;; compute FS kernel
+ pshufd xmm1, xmm3, 0x00 ; 1/16
+ mulps xmm1, xmm7
+ movaps xmm7, [edi + edx] ; e_i
+ pshufd xmm5, xmm3, 0xff ; 7/16
+ mulps xmm6, xmm5
+ cvtdq2ps xmm2, xmm2
+ mulps xmm2, [eax + ebctx.r_mul]
+ addps xmm6, xmm1
+ mulps xmm4, [ebx + srcbuf.rs]
+ pshufd xmm0, xmm3, 0xaa ; 5/16
+ mulps xmm0, xmm7
+ addps xmm2, [ebx + srcbuf.rb]
+ pshufd xmm3, xmm3, 0x55 ; 3/16
+ movaps [eax + ebctx.e_i_1], xmm7
+ addps xmm0, xmm6
+ movdqa xmm5, [ebx + srcbuf.im]
+ mulps xmm3, [edi + edx + 0x10] ; e[i+1]
+ addps xmm2, xmm4
+
+ addps xmm0, xmm3
+
+ movaps xmm6, xmm0
+ addps xmm0, xmm2
+ minps xmm0, [eax + ebctx.ehi]
+ pxor xmm4, xmm4
+ maxps xmm0, [eax + ebctx.elo]
+ addps xmm0, xmm5
+ subps xmm2, xmm2
+ minps xmm0, [eax + ebctx.ohi]
+ addps xmm6, xmm5
+ maxps xmm0, xmm2
+ cvttps2dq xmm1, xmm0 ; this is where the actual quantization is
+ cmpneqps xmm2, xmm5
+ pand xmm1, xmm2 ; force 0 if im == 0.0
+ cvtdq2ps xmm3, xmm1
+ subps xmm6, xmm3
+ movdqa xmm0, [eax + ebctx.a]
+ pcmpeqd xmm4, xmm1 ; 1's when pixel is 0
+ ;movdqa xmm1, [eax + ebctx.r] ; for visualizing r buf when testing
+ movaps xmm7, [edi + edx]
+ packssdw xmm1, xmm1
+ movaps [edi + edx], xmm6
+ packuswb xmm1, xmm1
+ movd [esp + ecx * 4], xmm1
+
+ ;; update r
+ mov esi, [eax + ebctx.a_line]
+ movdqa xmm2, [eax + ebctx.ones]
+ pandn xmm0, xmm4
+ por xmm2, xmm4
+ movdqa xmm1, [eax + ebctx.b]
+ pandn xmm0, xmm2
+ movdqa [esi + edx], xmm0
+ mov esi, [eax + ebctx.b_line]
+ pandn xmm1, xmm4
+ movdqa xmm2, [eax + ebctx.aspect2]
+ por xmm2, xmm4
+ pand xmm4, [eax + ebctx.r]
+ pandn xmm1, xmm2
+ movdqa [esi + edx], xmm1
+ add ebx, byte 0x10
+ mov esi, [eax + ebctx.r_line]
+ movdqa [esi + edx], xmm4
+ add edx, byte 0x10
+ add ecx, byte 1
+
+ cmp ecx, byte 0x10
+ jne eb_sse2_core1
+
+ movdqa [eax + ebctx.r], xmm4
+ movdqa [eax + ebctx.a], xmm0
+ movdqa [eax + ebctx.b], xmm1
+ movaps [eax + ebctx.e], xmm6
+
+;;; repack output
+ mov eax, [ebp + args.destbuf]
+ mov ecx, [ebp + args.offset]
+ mov ebx, [eax]
+ mov edx, [eax + 4]
+ mov esi, [eax + 8]
+ mov edi, [eax + 12]
+ movdqa xmm0, [esp] ; 3d3c3b3a2d2c2b2a1d1c1b1a0d0c0b0a
+ ;; 0 1 2 3
+ movdqa xmm4, xmm0
+ movdqa xmm2, [esp + 0x20]
+ punpckhbw xmm4, xmm2 ; Bd3dBc3cBb3cBa3aAd2dAc2cAb2bAa2a
+ punpcklbw xmm0, xmm2 ; 9d1d9c1c9b1b9a1a8d0d8c0c8b0b8a0a
+ movdqa xmm1, [esp + 0x10] ; 7d7c7b7a6d6c6b6a5d5c5b5a4d4c4b4a
+ movdqa xmm2, xmm1
+ movdqa xmm3, [esp + 0x30]
+ punpcklbw xmm2, xmm3 ; Dd5dDc5cDb5cDa5aCd4dCc4cCb4bCa4a
+ punpckhbw xmm1, xmm3 ; Fd7dFc7cFb7bFa7aEd6dEc6cEb6bEa6a
+ ;; 0 4 2 1
+ movdqa xmm3, xmm0
+ punpckhbw xmm3, xmm2
+ punpcklbw xmm0, xmm2
+ movdqa xmm2, xmm4
+ punpcklbw xmm4, xmm1
+ punpckhbw xmm2, xmm1
+ ;; 0 3 4 2
+ movdqa xmm1, xmm0
+ punpckhbw xmm1, xmm4
+ punpcklbw xmm0, xmm4
+ movdqa xmm4, xmm3
+ punpcklbw xmm4, xmm2
+ punpckhbw xmm3, xmm2
+ ;; 0 1 4 3
+ movdqa xmm2, xmm0
+ punpckhbw xmm2, xmm4
+ movdqa [edx + ecx], xmm2
+ punpcklbw xmm0, xmm4
+ movdqa [ebx + ecx], xmm0 ; FaEaDaCaBaAa9a8a7a6a5a4a3a2a1a0a
+ movdqa xmm4, xmm1
+ punpcklbw xmm4, xmm3
+ movdqa [esi + ecx], xmm4
+ punpckhbw xmm1, xmm3
+ movdqa [edi + ecx], xmm1
+ ;; 0 2 4 1
+
+ mov esi, [ebp - 12]
+ mov edi, [ebp - 8]
+ mov ebx, [ebp - 4]
+ leave
+ ret
+
+ global eb_sse2_rev_rs
+eb_sse2_rev_rs:
+ struc rargs
+.header resb 8
+.ctx resd 1 ; context
+.offset resd 1 ; offset (in pixels)
+ endstruc
+ push ebp
+ mov ebp, esp
+ push edi
+ push esi
+
+ mov eax, [ebp + rargs.ctx]
+ mov ecx, [ebp + rargs.offset]
+ shl ecx, 4
+ mov esi, [eax + ebctx.r_line]
+ add esi, ecx
+ mov edi, [eax + ebctx.a_line]
+ add edi, ecx
+ mov edx, [eax + ebctx.b_line]
+ add edx, ecx
+ movdqa xmm0, [eax + ebctx.r]
+ movdqa xmm1, [eax + ebctx.a]
+ movdqa xmm7, [eax + ebctx.aspect2]
+ paddd xmm7, xmm7
+ movdqa xmm2, [eax + ebctx.b]
+ mov ecx, 0x10
+eb_rev_rs1:
+ movdqa xmm3, [esi] ; pr[i]
+ paddd xmm0, xmm1
+ movdqa xmm4, [edx] ; pb[i]
+ movdqa xmm6, xmm4
+ movdqa xmm5, xmm0
+ paddd xmm6, xmm3
+ paddd xmm5, xmm2
+ pcmpgtd xmm5, xmm6 ; 1's if rv + bv + av > pr[i] + pb[i]
+ paddd xmm1, [eax + ebctx.twos]
+ pxor xmm3, xmm0
+ pxor xmm4, xmm2
+ pand xmm3, xmm5
+ pand xmm4, xmm5
+ pxor xmm0, xmm3
+ pxor xmm2, xmm4
+ movdqa xmm4, [edi] ; pa[i]
+ movdqa xmm3, xmm0
+ pxor xmm4, xmm1
+ movdqa xmm6, xmm2
+ paddd xmm3, xmm2
+ paddd xmm6, xmm7
+ movdqa [esi], xmm3 ; pr[i] = rv + bv
+ pand xmm4, xmm5
+ movdqa [edx], xmm6 ; pb[i] = bv + 2 * aspect_2
+ pxor xmm1, xmm4
+ movdqa [edi], xmm1 ; pa[i] = av
+ sub edi, byte 0x10
+ sub edx, byte 0x10
+ sub esi, byte 0x10
+ sub ecx, byte 1
+ jne eb_rev_rs1
+ movdqa [eax + ebctx.r], xmm0
+ movdqa [eax + ebctx.a], xmm1
+ movdqa [eax + ebctx.b], xmm2
+
+ pop esi
+ pop edi
+ leave
+ ret
+
diff --git a/gs/toolbin/halftone/ETS/ei03.pdf b/gs/toolbin/halftone/ETS/ei03.pdf
new file mode 100644
index 000000000..0a6a54b2b
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/ei03.pdf
Binary files differ
diff --git a/gs/toolbin/halftone/ETS/ets.c b/gs/toolbin/halftone/ETS/ets.c
new file mode 100644
index 000000000..3e8ecbd98
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/ets.c
@@ -0,0 +1,900 @@
+ /*
+ * Testbed implementation of Even Better Screening. Please see
+ * http://www.artofcode.com/eventone/ for more details.
+ *
+ * Copyright 2001-2004 Raph Levien <raph@acm.org>
+ *
+ * Code in this module is covered by US Patents 5,055,942 and
+ * 5,917,614, and corresponding international patents. This version
+ * of ETS is for commercial licensees and is governed by the licensing
+ * agreement between artofcode LLC and the licensee. Please see
+ * http://www.artofcode.com/eventone/ for information on licensing.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include "ets.h"
+
+/* source for threshold matrix - need to improve build process */
+#include "tm.h"
+
+#define ETS_VERSION 150
+
+#define ETS_SHIFT 16
+#define IMO_SHIFT 14
+
+#define FANCY_COUPLING
+
+typedef struct _ETS_PlaneCtx ETS_PlaneCtx;
+typedef unsigned int uint32;
+
+struct _ETS_Ctx {
+ int width;
+ int n_planes;
+ int levels; /* Number of levels on output, <= 256 */
+ ETS_PlaneCtx **plane_ctx;
+ int aspect_x;
+ int aspect_y;
+ int *strengths;
+ int elo;
+ int ehi;
+ int *c_line;
+
+ int ets_style;
+ int r_style;
+
+ uint32 seed1;
+ uint32 seed2;
+
+ FILE *dump_file;
+ ETS_DumpLevel dump_level;
+
+ /* Threshold modulation array */
+ int y;
+ int tmwid;
+ int tmheight;
+ const signed char *tmmat;
+};
+
+struct _ETS_PlaneCtx {
+ int width; /* Width of plane in pixels */
+ int *dst_line; /* Output pointer */
+ int *err_line; /* Total error carried out of pixel in the line above */
+ int *r_line; /* expected distance table (see paper for details) */
+ int *a_line; /* expected distance intermediate table (see paper) */
+ int *b_line; /* expected distance intermediate table (see paper) */
+ int *lut; /* Table to map from input source value to internal
+ * intensity level. Internal intensity level is 0 to
+ * 1<<ETS_SHIFT. */
+ int *dist_lut; /* A table of "expected distance between set pixels"
+ * values, stored in fixed point format with (ETS_SHIFT-c1)
+ * fractional bits. Values outside of the 'level 0-1' band
+ * will be set to 0 to avoid ETS weighting being used. */
+ char *rs_lut; /* Random noise table; values between 0 and 24. x meaning
+ * use 32-x bits of random noise, */
+ int c1; /* Shift adjustment for the dist_lut. */
+ int tm_offset;/* Plane offset within tm data */
+};
+
+void *
+ets_malloc_aligned(int size, int align)
+{
+ void *result;
+ void *alloced = malloc(size + align);
+ int pad;
+
+ if (alloced == 0)
+ return 0;
+ pad = ((12 - (int)alloced) & 15) + 4;
+ result = (void *)(pad + (char *)alloced);
+ ((int *)result)[-1] = pad;
+ return result;
+}
+
+void
+ets_free_aligned(void *p)
+{
+ int pad = ((int *)p)[-1];
+ free((char*)p - pad);
+}
+
+static double
+compute_distscale(const ETS_Params *params)
+{
+ double distscale = params->distscale;
+
+ if (distscale == 0.0)
+ {
+ distscale = -1;
+ switch(params->aspect_x)
+ {
+ case 1:
+ switch(params->aspect_y)
+ {
+ case 1:
+ distscale = 0.95;
+ break;
+ case 2:
+ distscale = 1.8;
+ break;
+ case 3:
+ distscale = 2.4; /* FIXME */
+ break;
+ case 4:
+ distscale = 3.6;
+ break;
+ }
+ break;
+ case 2:
+ switch(params->aspect_y)
+ {
+ case 1:
+ distscale = 1.8;
+ break;
+ case 2:
+ break;
+ case 3:
+ distscale = 1.35; /* FIXME */
+ break;
+ case 4:
+ break;
+ }
+ break;
+ case 3:
+ switch(params->aspect_y)
+ {
+ case 1:
+ distscale = 2.4; /* FIXME */
+ break;
+ case 2:
+ distscale = 1.35; /* FIXME */
+ break;
+ case 3:
+ break;
+ case 4:
+ distscale = 0.675; /* FIXME */
+ break;
+ }
+ break;
+ case 4:
+ switch(params->aspect_y)
+ {
+ case 1:
+ distscale = 3.6;
+ break;
+ case 2:
+ break;
+ case 3:
+ distscale = 0.675; /* FIXME */
+ break;
+ case 4:
+ break;
+ }
+ break;
+ }
+ if (distscale == -1)
+ {
+ fprintf(stderr, "aspect ratio of %d:%d not supported\n",
+ params->aspect_x, params->aspect_y);
+ exit(1);
+ }
+ }
+ return distscale;
+}
+
+static int
+ets_log2(int x)
+{
+ int y = 0;
+ int z;
+
+ for (z = x; z > 1; z = z >> 1)
+ y++;
+ return y;
+}
+
+static int
+ets_log2up(int x)
+{
+ return ets_log2(x-1)+1;
+}
+
+static int
+compute_randshift(int nl, int rs_base, int levels)
+{
+ int rs = rs_base;
+
+ if ((nl > (90 << (ETS_SHIFT - 10)) &&
+ nl < (129 << (ETS_SHIFT - 10))) ||
+ (nl > (162 << (ETS_SHIFT - 10)) &&
+ nl < (180 << (ETS_SHIFT - 10))))
+ rs--;
+ else if (nl > (321 << (ETS_SHIFT - 10)) &&
+ nl < (361 << (ETS_SHIFT - 10)))
+ {
+ rs--;
+ if (nl > (331 << (ETS_SHIFT - 10)) &&
+ nl < (351 << (ETS_SHIFT - 10)))
+ rs--;
+ }
+ else if ((nl == (levels - 1) << ETS_SHIFT) &&
+ nl > (((levels - 1) << ETS_SHIFT) -
+ (1 << (ETS_SHIFT - 2))))
+ {
+ /* don't add randomness in extreme shadows */
+ }
+ else if ((nl > (3 << (ETS_SHIFT - 2))))
+ {
+ nl -= (nl + (1 << (ETS_SHIFT - 2))) & -(1 << (ETS_SHIFT - 1));
+ if (nl < 0) nl = -nl;
+ if (nl < (1 << (ETS_SHIFT - 4))) rs--;
+ if (nl < (1 << (ETS_SHIFT - 5))) rs--;
+ if (nl < (1 << (ETS_SHIFT - 6))) rs--;
+ }
+ else
+ {
+ if (nl < (3 << (ETS_SHIFT - 3))) nl += 1 << (ETS_SHIFT - 2);
+ nl = nl - (1 << (ETS_SHIFT - 1));
+ if (nl < 0) nl = -nl;
+ if (nl < (1 << (ETS_SHIFT - 4))) rs--;
+ if (nl < (1 << (ETS_SHIFT - 5))) rs--;
+ if (nl < (1 << (ETS_SHIFT - 6))) rs--;
+ }
+ return rs;
+}
+
+/* Maximum number of planes, but actually we want to dynamically
+ allocate all scratch buffers that depend on this. */
+#define M 16
+
+/**
+ * ets_line: Screen a line using Even TonenFS screeing.
+ * @ctx: An #EBPlaneCtx context.
+ * @dest: Array of destination buffers, 8 bpp pixels each.
+ * @src: Array of source buffer, ET_SrcPixel pixels each.
+ *
+ * Screens a single line using Even ToneFS screening.
+ **/
+void
+ets_line(ETS_Ctx *etc, uchar **dest, const ETS_SrcPixel *const *src)
+{
+ int a[M], b[M];
+ int e_1_0[M], e_m1_1[M], e_0_1[M], e_1_1[M];
+ int i;
+ int im;
+ int *pa, *pb, *piir, *pr;
+ int r[M], rg;
+ int xd;
+ uint32 seed1 = etc->seed1;
+ uint32 seed2 = etc->seed2;
+ uint32 sum;
+ int plane_idx;
+ int n_planes = etc->n_planes;
+ int levels = etc->levels;
+#ifdef OLD_QUANT
+ int dith_mul = levels << 8;
+#else
+ int dith_mul = (levels - 1) << 8;
+#endif
+ int imo_mul = (1 << (ETS_SHIFT + IMO_SHIFT)) / (levels - 1);
+ int aspect_x2 = etc->aspect_x * etc->aspect_x;
+ int aspect_y2 = etc->aspect_y * etc->aspect_y;
+ int *strengths = etc->strengths;
+ int elo = etc->elo;
+ int ehi = etc->ehi;
+ int coupling;
+ int *c_line = etc->c_line;
+ int rand_shift;
+ const signed char *tmline = etc->tmmat + (etc->y % etc->tmheight) * etc->tmwid;
+ int tmmask = etc->tmwid - 1;
+
+ xd = etc->width;
+
+ /* Setup initial conditions for walking across the scanline. Because we
+ * are dealing with multiple planes, we have arrays of each variable,
+ * indexed by p = plane number.
+ * a[p] = 2x+1 (where x is the horizontal distance to the nearest set pixel)
+ * b[p] = 2y+1 (where y is the vertical distance to the nearest set pixel)
+ * r[p] = distance^2 to the nearest set pixel in this plane.
+ * e_0_1[p] = error from pixel above
+ * e_1_0[p] = error from pixel to the left
+ * e_m1_1[p]= error from pixel above right
+ * e_1_1[p] = error from pixel above left
+ * Because the source line is run length compressed, we need to run
+ * length decode it. We do this using the following:
+ * count[p] = number of pixels left in this run
+ * src_idx[p] = which run length entry we are currently on.
+ */
+
+ /* A potted recap of the distance calculations in the paper for easy
+ * reference.
+ * distance to last dot = SQR( (aspect_y * x)^2 + (aspect_x * y)^2 )
+ * r = distance^2 = (aspect_y * x)^2 + (aspect_x * y)^2
+ * = aspect_y^2 * x^2 + aspect_x^2 * y^2
+ * r_below - r = (aspect_x^2 * (y+1)^2) - (aspect_x^2 * y^2)
+ * = aspect_x^2 * ( (y+1)^2 - y^2 )
+ * = aspect_x^2 * ( 2y + 1 )
+ * r_under - r = (aspect_y^2 * (x+1)^2) - (aspect_y^2 * x^2)
+ * = aspect_y^2 * ( (x+1)^2 - x^2 )
+ * = aspect_y^2 * ( 2x + 1 )
+ * So, we keep:
+ * a = aspect_y^2 * (2x+1)
+ * b = aspect_x^2 * (2y+1)
+ * And we can then update r by adding either a or b at each stage.
+ */
+ for (plane_idx = 0; plane_idx < n_planes; plane_idx++)
+ {
+ ETS_PlaneCtx *ctx = etc->plane_ctx[plane_idx];
+
+ a[plane_idx] = aspect_y2; /* aspect_y^2 * (2x + 1) where x = 0 */
+ b[plane_idx] = aspect_x2; /* aspect_x^2 * (2y + 1) where y = 0 */
+ r[plane_idx] = 0;
+ e_0_1[plane_idx] = 0;
+ e_1_0[plane_idx] = 0;
+ e_m1_1[plane_idx] = ctx->err_line[0];
+ }
+
+ coupling = 0;
+
+ for (i = 0; i < xd; i++)
+ {
+#ifdef FANCY_COUPLING
+ coupling += c_line[i];
+#else
+ coupling = 0;
+#endif
+ /* Lookup image data and compute R for all planes. */
+ for (plane_idx = 0; plane_idx < n_planes; plane_idx++)
+ {
+ ETS_PlaneCtx *ctx = etc->plane_ctx[plane_idx];
+ ETS_SrcPixel src_pixel = src[plane_idx][i];
+ int new_r;
+ int c1 = ctx->c1;
+ int rlimit = 1 << (30 - ETS_SHIFT + c1);
+ uchar *dst_ptr = dest[plane_idx];
+ int new_e_1_0;
+ int achieved_error;
+ int err;
+ int imo;
+ int expected_r;
+
+ pr = ctx->r_line;
+ pa = ctx->a_line;
+ pb = ctx->b_line;
+ piir = ctx->err_line;
+
+ im = ctx->lut[src_pixel]; /* image pixel (ink level) */
+ expected_r = ctx->dist_lut[src_pixel]; /* expected distance */
+ rand_shift = ctx->rs_lut[src_pixel]; /* random noise shift */
+
+ /* Forward pass distance computation; equation 2 from paper */
+ if (r[plane_idx] + a[plane_idx] < pr[i])
+ {
+ r[plane_idx] += a[plane_idx];
+ a[plane_idx] += 2*aspect_y2;
+ }
+ else
+ {
+ a[plane_idx] = pa[i];
+ b[plane_idx] = pb[i];
+ r[plane_idx] = pr[i];
+ }
+
+ /* Shuffle all the errors and read the next one. */
+ e_1_1[plane_idx] = e_0_1[plane_idx];
+ e_0_1[plane_idx] = e_m1_1[plane_idx];
+ e_m1_1[plane_idx] = i == xd - 1 ? 0 : piir[i + 1];
+ /* Reuse of variables here; new_e_1_0 is the total error passed
+ * into this pixel, with the traditional fs weights. */
+ new_e_1_0 = ((e_1_0[plane_idx] * 7 + e_m1_1[plane_idx] * 3 +
+ e_0_1[plane_idx] * 5 + e_1_1[plane_idx] * 1) >> 4);
+
+ /* White pixels stay white */
+ if (im == 0)
+ {
+ dst_ptr[i] = 0;
+ /* If we are forcing white pixels to stay white, we should
+ * not propagate errors through them. Or at the very least
+ * we should attenuate such errors. */
+ new_e_1_0 = 0;
+ }
+ else
+ {
+ /* The guts of ets (Equation 5) */
+ int ets_bias;
+
+ if (expected_r == 0)
+ {
+ ets_bias = 0;
+ }
+ else
+ {
+ /* Read the current distance, and clamp to avoid overflow
+ * in subsequent calculations. */
+ new_r = r[plane_idx];
+ if (new_r > rlimit)
+ new_r = rlimit;
+ /* Should we store back with the limit? */
+
+ /* Change the units on the distance to match our lut
+ * and subtract our actual distance (rg) from the expected
+ * distance (expected_r). */
+ rg = new_r << (ETS_SHIFT - c1);
+ ets_bias = rg - expected_r;
+
+ /* So ets_bias is the difference that we want to base our
+ * threshold modulation on (section 2.1 of the paper).
+ * Exactly how do we do that? We present various options
+ * here.
+ * 0 no modulation
+ * 1 what the code did when it came to me. No reference
+ * to this in the paper.
+ * 2 use it unchanged.
+ * 3 like 1, but same shift either side of 0.
+ * 4+ scale the modulation down.
+ */
+ switch (etc->ets_style)
+ {
+ case 0:
+ ets_bias = 0;
+ break;
+ case 1:
+ if (ets_bias > 0) ets_bias >>= 3;
+ break;
+ case 2:
+ break;
+ case 3:
+ ets_bias >>= 3;
+ break;
+ default:
+ ets_bias /= etc->ets_style-3;
+ }
+ }
+
+ /* Non white pixels get biased, and have the error
+ * applied. The error starts from the total error passed
+ * in. */
+ err = new_e_1_0;
+
+ /* Plus any ETS bias (calculated above) */
+ err += ets_bias;
+
+ /* Plus any random noise. Again various options here:
+ * 0 No random noise
+ * 1 The code as it came to me, using lookup table
+ * 2 commented out when it came to me; using pseudo
+ * random numbers generated from seed.
+ */
+ switch(etc->r_style)
+ {
+ case 0:
+ break;
+ case 2:
+ /* Add the two seeds together */
+ sum = seed1 + seed2;
+
+ /* If the add generated a carry, increment
+ * the result of the addition.
+ */
+ if (sum < seed1 || sum < seed2) sum++;
+
+ /* Seed2 becomes old seed1, seed1 becomes result */
+ seed2 = seed1;
+ seed1 = sum;
+
+ err -= (sum >> rand_shift) - (0x80000000 >> rand_shift);
+ break;
+ case 1:
+ err += tmline[(i+ctx->tm_offset) & tmmask] << (24 - rand_shift);
+ break;
+ }
+
+ /* Clamp the error; this is explained in the paper in
+ * section 6 just after equation 7. */
+ /* FIXME: Understand this better */
+ if (err < elo)
+ err = elo;
+ else if (err > ehi)
+ err = ehi;
+
+ /* Add the coupling to our combined 'error + bias' value */
+ /* FIXME: Are we sure this shouldn't be clamped? */
+ err += coupling;
+
+ /* Calculate imo = the quantised image value (Equation 7) */
+#ifdef OLD_QUANT
+ imo = ((err + im) * dith_mul) >> (ETS_SHIFT + 8);
+#else
+ imo = ((err + im) * dith_mul + (1 << (ETS_SHIFT + 7))) >> (ETS_SHIFT + 8);
+#endif
+ /* Clamp to allow for over/underflow due to large errors */
+ if (imo < 0) imo = 0;
+ else if (imo > levels - 1) imo = levels - 1;
+
+ /* Store final output pixel */
+ dst_ptr[i] = imo;
+
+ /* Calculate the error between the desired and the obtained
+ * pixel values. */
+ achieved_error = im - ((imo * imo_mul) >> IMO_SHIFT);
+
+ /* And the error passed in is updated with the error for
+ * this pixel. */
+ new_e_1_0 += achieved_error;
+
+ /* Do the magic coupling here; strengths is 0 when
+ * multiplane optimisation is turned off, hence coupling
+ * remains 0 always. Equation 6. */
+ coupling += (achieved_error * strengths[plane_idx]) >> 8;
+
+ /* If we output a set pixel, then reset our distances. */
+ if (imo != 0)
+ {
+ a[plane_idx] = aspect_y2;
+ b[plane_idx] = aspect_x2;
+ r[plane_idx] = 0;
+ }
+ }
+
+ /* Store the values back for the next pass (Equation 3) */
+ pa[i] = a[plane_idx];
+ pb[i] = b[plane_idx];
+ pr[i] = r[plane_idx];
+ piir[i] = new_e_1_0;
+ e_1_0[plane_idx] = new_e_1_0;
+ }
+#ifdef FANCY_COUPLING
+ coupling = coupling >> 1;
+ c_line[i] = coupling;
+#endif
+ }
+
+ /* Note: this isn't white optimized, but the payoff is probably not
+ that important. */
+#ifdef FANCY_COUPLING
+ coupling = 0;
+ for (i = xd - 1; i >= 0; i--)
+ {
+ coupling = (coupling + c_line[i]) >> 1;
+ c_line[i] = (coupling - (coupling >> 4));
+ }
+#endif
+
+ /* Update distances. Reverse scanline pass. */
+ for (plane_idx = 0; plane_idx < n_planes; plane_idx++)
+ {
+ ETS_PlaneCtx *ctx = etc->plane_ctx[plane_idx];
+ int av, bv, rv;
+ int c1 = ctx->c1;
+ int rlimit = 1 << (30 - ETS_SHIFT + c1);
+
+ pr = ctx->r_line;
+ pa = ctx->a_line;
+ pb = ctx->b_line;
+
+ av = aspect_y2;
+ bv = aspect_x2;
+ rv = 0;
+ for (i = xd - 1; i >= 0; i--)
+ {
+ /* Equation 4 from the paper */
+ if (rv + bv + av < pr[i] + pb[i])
+ {
+ rv += av;
+ av += (aspect_y2<<1);
+ }
+ else
+ {
+ rv = pr[i];
+ av = pa[i];
+ bv = pb[i];
+ }
+ if (rv > rlimit) rv = rlimit;
+ pa[i] = av;
+ pb[i] = bv + (aspect_x2 << 1);
+ pr[i] = rv + bv;
+ }
+ }
+
+ etc->seed1 = seed1;
+ etc->seed2 = seed2;
+ etc->y++;
+}
+
+/**
+ * ets_plane_free: Free an #EBPlaneCtx context.
+ * @ctx: The #EBPlaneCtx context to free.
+ *
+ * Frees @ctx.
+ **/
+static void
+ets_plane_free(ETS_PlaneCtx *ctx)
+{
+ free(ctx->err_line);
+ free(ctx->r_line);
+ free(ctx->a_line);
+ free(ctx->b_line);
+ free(ctx->lut);
+ free(ctx->dist_lut);
+ free(ctx->rs_lut);
+ free(ctx);
+}
+
+/**
+ * ets_new: Create new Even ToneFS screening context.
+ * @source_width: Width of source buffer.
+ * @dest_width: Width of destination buffer, in pixels.
+ * @lut: Lookup table for gray values.
+ *
+ * Creates a new context for Even ToneFS screening.
+ *
+ * If @dest_width is larger than @source_width, then input lines will
+ * be expanded using nearest-neighbor sampling.
+ *
+ * @lut should be an array of 256 values, one for each possible input
+ * gray value. @lut is a lookup table for gray values. Output is from
+ * 0 for white (no ink) to ....
+ *
+ *
+ * Return value: The new #EBPlaneCtx context.
+ **/
+static ETS_PlaneCtx *
+ets_plane_new(const ETS_Params *params, ETS_Ctx *etc, int plane_idx)
+{
+ int width = params->width;
+ int *lut = params->luts[plane_idx];
+ ETS_PlaneCtx *result;
+ int i;
+ int *new_lut;
+ int *dist_lut;
+ char *rs_lut;
+ double distscale = compute_distscale(params);
+ int c1;
+ int rlimit;
+ int log2_levels, log2_aspect;
+ int rs_base;
+
+ result = (ETS_PlaneCtx *)malloc(sizeof(ETS_PlaneCtx));
+
+ result->width = width;
+
+ log2_levels = ets_log2(params->levels);
+ log2_aspect = ets_log2(params->aspect_x) + ets_log2(params->aspect_y); /* FIXME */
+ c1 = 6 + log2_aspect + log2_levels;
+ if (params->c1_scale)
+ c1 -= params->c1_scale[plane_idx];
+ result->c1 = c1;
+ rlimit = 1 << (30 - ETS_SHIFT + c1);
+ result->tm_offset = TM_WIDTH/ets_log2up(params->n_planes);
+
+ /* Set up a lut to map input values from the source domain to the
+ * amount of ink. Callers can provide a lut of their own, which can be
+ * used for gamma correction etc. In the absence of this, a linear
+ * distribution is assumed. The user supplied lut should map from
+ * 'amount of light' to 'gamma adjusted amount of light', as the code
+ * subtracts the final value from (1<<ETS_SHIFT) (typically 65536) to
+ * get 'amount of ink'. */
+ new_lut = (int *)malloc((ETS_SRC_MAX + 1) * sizeof(int));
+ for (i = 0; i < ETS_SRC_MAX + 1; i++)
+ {
+ int nli;
+
+ if (lut == NULL)
+ {
+#if ETS_SRC_MAX == 255
+ nli = (i * 65793 + (i >> 7)) >> (24 - ETS_SHIFT);
+#else
+ nli = (i * ((double) (1 << ETS_SHIFT)) / ETS_SRC_MAX) + 0.5;
+#endif
+ }
+ else
+ nli = lut[i] >> (24 - ETS_SHIFT);
+ if (params->polarity == ETS_BLACK_IS_ZERO)
+ new_lut[i] = (1 << ETS_SHIFT) - nli;
+ else
+ new_lut[i] = nli;
+ }
+
+ /* Here we calculate 2 more lookup tables. These could be separated out
+ * into 2 different loops, but are done in 1 to avoid a small amount of
+ * recalculation.
+ * dist_lut[i] = expected distance between dots for a greyscale of level i
+ * rs_lut[i] = whacky random noise scale factor.
+ */
+ dist_lut = (int *)malloc((ETS_SRC_MAX + 1) * sizeof(int));
+ rs_lut = (char *)malloc((ETS_SRC_MAX + 1) * sizeof(int));
+
+ rs_base = 35 - ETS_SHIFT + log2_levels - params->rand_scale;
+
+ /* The paper says that the expected 'value' for a grayshade g is:
+ * d_avg = 0.95 / 0.95/(g^2)
+ * This seems wrong to me. Let's consider some common cases; for a given
+ * greyscale, lay out the 'ideal' dithering, then consider removing each
+ * set pixel in turn and measuring the distance between that pixel and
+ * the closest set pixel.
+ *
+ * g = 1/2 #.#.#.#. visibly, expected distance = SQR(2)
+ * .#.#.#.#
+ * #.#.#.#.
+ * .#.#.#.#
+ *
+ * g = 1/4 #.#.#.#. expected distance = 2
+ * ........
+ * #.#.#.#.
+ * ........
+ *
+ * g = 1/16 #...#... expected distance = 4
+ * ........
+ * ........
+ * ........
+ * #...#...
+ * ........
+ * ........
+ * ........
+ *
+ * This rough approach leads us to suspect that we should be finding
+ * values roughly proportional to 1/SQR(g). Given the algorithm works in
+ * terms of square distance, this means 1/g. This is at odds with the
+ * value given in the paper. Being charitable and assuming that the paper
+ * means 'squared distance' when it says 'value', we are still a square
+ * off.
+ *
+ * Nonetheless, the code as supplied uses 0.95/g for the squared distance
+ * (i.e. it appears to agree with our logic here).
+ */
+ for (i = 0; i <= ETS_SRC_MAX; i++)
+ {
+ double dist;
+ int nl = new_lut[i] * (params->levels - 1);
+ int rs;
+
+ /* This is (or is supposed to be) equation 5 from the paper. If nl
+ * is g, why aren't we dividing by nl*nl ? */
+ if (nl == 0)
+ {
+ /* The expected distance for an ink level of 0 is infinite. Just
+ * put 0! */
+ dist = 0;
+ }
+ else if (nl >= ((1<<ETS_SHIFT)/(params->levels-1)))
+ {
+ /* New from RJW: Our distance measurements are only meaningful
+ * within the bottom 'level band' of the output. Do not apply
+ * ETS to higher ink levels. */
+ dist = 0;
+ }
+ else
+ {
+ dist = (distscale * (1 << (2 * ETS_SHIFT - c1))) / nl;
+ if (dist > rlimit << (ETS_SHIFT - c1))
+ dist = rlimit << (ETS_SHIFT - c1);
+ }
+
+ if (params->rand_scale_luts == NULL)
+ {
+ rs = compute_randshift(nl, rs_base, params->levels);
+ rs_lut[i] = rs;
+ }
+ else
+ {
+ int val = params->rand_scale_luts[plane_idx][i];
+
+ rs_lut[i] = rs_base + 16 - ets_log2(val + (val >> 1));
+ }
+ dist_lut[i] = (int)dist;
+ }
+
+ result->lut = new_lut;
+ result->dist_lut = dist_lut;
+ result->rs_lut = rs_lut;
+
+ result->err_line = (int *)calloc(width, sizeof(int));
+ result->r_line = (int *)calloc(width, sizeof(int));
+ result->a_line = (int *)calloc(width, sizeof(int));
+ result->b_line = (int *)calloc(width, sizeof(int));
+ for (i = 0; i < width; i++)
+ {
+ result->a_line[i] = 1;
+ result->b_line[i] = 1;
+ /* Initialize error with a non zero random value to ensure dots don't
+ land on dots when we have same planes with same gray level and
+ the plane interaction option is turned off. Ideally the level
+ of this error should be based upon the values of the first line
+ to ensure that things get primed properly */
+ result->err_line[i] = -((rand () & 0x7fff) << 6) >> (24 - ETS_SHIFT);
+ }
+
+ return result;
+}
+
+ETS_Ctx *
+ets_new(const ETS_Params *params)
+{
+ ETS_Ctx *result = (ETS_Ctx *)malloc(sizeof(ETS_Ctx));
+ int n_planes = params->n_planes;
+ int i;
+ int using_vectors = 0;
+
+ if (params->dump_file)
+ {
+ int header[5];
+
+ header[0] = 0x70644245;
+ header[1] = 'M' * 0x1010000 + 'I' * 0x101;
+ header[2] = ETS_VERSION;
+ header[3] = ETS_SRC_MAX;
+ header[4] = sizeof(ETS_SrcPixel);
+ fwrite(header, sizeof(int), sizeof(header) / sizeof(header[0]),
+ params->dump_file);
+ if (params->dump_level >= ETS_DUMP_PARAMS)
+ {
+ fwrite(params, 1, sizeof(ETS_Params), params->dump_file);
+ }
+ if (params->dump_level >= ETS_DUMP_LUTS)
+ {
+ for (i = 0; i < params->n_planes; i++)
+ fwrite(params->luts[i], sizeof(int), ETS_SRC_MAX + 1,
+ params->dump_file);
+ }
+ }
+
+ result->width = params->width;
+ result->n_planes = n_planes;
+ result->levels = params->levels;
+
+ result->aspect_x = params->aspect_x;
+ result->aspect_y = params->aspect_y;
+
+ result->ehi = (int)(0.6 * (1 << ETS_SHIFT) / (params->levels - 1));
+ result->elo = -result->ehi;
+
+ result->strengths = (int *)malloc(sizeof(int) * n_planes);
+ memcpy(result->strengths, params->strengths,
+ sizeof(int) * n_planes);
+
+ result->ets_style = params->ets_style;
+ result->r_style = params->r_style;
+
+ result->c_line = (int *)calloc(params->width, sizeof(int));
+
+ result->seed1 = 0x5324879f;
+ result->seed2 = 0xb78d0945;
+
+ result->dump_file = params->dump_file;
+ result->dump_level = params->dump_level;
+
+ result->plane_ctx = (ETS_PlaneCtx **)malloc(sizeof(ETS_PlaneCtx *) * n_planes);
+ for (i = 0; i < n_planes; i++)
+ result->plane_ctx[i] = ets_plane_new(params, result, i);
+ result->y = 0;
+ result->tmmat = tmmat;
+ result->tmwid = TM_WIDTH;
+ result->tmheight = TM_HEIGHT;
+ return result;
+}
+
+/**
+ * even_better_free: Free an #EvenBetterCtx context.
+ * @ctx: The #EvenBetterCtx context to free.
+ *
+ * Frees @ctx.
+ **/
+void
+ets_free(ETS_Ctx *ctx)
+{
+ int i;
+ int n_planes = ctx->n_planes;
+
+ if (ctx->dump_file)
+ fclose(ctx->dump_file);
+
+ for (i = 0; i < n_planes; i++)
+ ets_plane_free(ctx->plane_ctx[i]);
+ free(ctx->plane_ctx);
+ free(ctx->strengths);
+ free(ctx->c_line);
+
+ free(ctx);
+}
diff --git a/gs/toolbin/halftone/ETS/ets.h b/gs/toolbin/halftone/ETS/ets.h
new file mode 100644
index 000000000..9c11d8bf8
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/ets.h
@@ -0,0 +1,93 @@
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Definitions for source pixel format.
+ * Reasonable settings are as follows:
+ * 8-bit: unsigned char ETS_SrcPixel; ETS_SRC_MAX = 255
+ * 12-bit 0..4095: unsigned short (or int) ETS_SrcPixel; ETS_SRC_MAX = 4095
+ * 12-bit 0..4096: unsigned short (or int) ETS_SrcPixel; ETS_SRC_MAX = 4096
+ * 16-bit 0..65535: unsigned short (or int) ETS_SrcPixel; ETS_SRC_MAX = 65535
+ * 16-bit 0..65536: unsigned int ETS_SrcPixel; ETS_SRC_MAX = 65536
+ */
+
+/* A quick and dirty switch for 8 or 16 bit data */
+#define CHAR_SOURCE
+
+#ifdef CHAR_SOURCE
+ typedef unsigned char ETS_SrcPixel;
+ #define ETS_SRC_MAX 255
+#else
+ typedef unsigned short ETS_SrcPixel;
+ #define ETS_SRC_MAX 65535
+#endif
+
+/* Photoshop (and possibly other image formats define white in a CMYK image with a
+ value of 255 (65535). This is opposite of the PAM files that Robin has created.
+ The ETS code expects white to be at 0. Adjustments to the values in gray level
+ will be baked into the LUT if needed */
+typedef enum {
+ ETS_BLACK_IS_ZERO = 0,
+ ETS_BLACK_IS_ONE
+} ETS_POLARITY;
+
+typedef unsigned char uchar;
+
+/* To use the file dump capability:
+
+ Open a file as with: fopen ("dumpfile", "wb");
+ Put the resulting FILE * pointer in params->dump_file.
+ Set params->dump_level to the desired level. ET_DUMP_ALL dumps all
+ inputs and outputs. Other values will lead to much smaller files,
+ but may not be as insightful.
+
+ If no dump file is desired, set params->dump_file to NULL.
+*/
+
+typedef enum {
+ ETS_DUMP_MINIMAL,
+ ETS_DUMP_PARAMS,
+ ETS_DUMP_LUTS,
+ ETS_DUMP_INPUT,
+ ETS_DUMP_ALL
+} ETS_DumpLevel;
+
+typedef struct {
+ int width;
+ int n_planes;
+ int levels; /* Number of levels on output, <= 256 */
+ int **luts;
+ double distscale; /* 0 to autoselect based on aspect */
+ int aspect_x;
+ int aspect_y;
+ int *strengths;
+ int rand_scale; /* 0 is default. Larger means more random. */
+ int *c1_scale; /* now an array, one per channel; 0 is default */
+ int ets_style;
+ int r_style;
+ FILE *dump_file;
+ ETS_DumpLevel dump_level;
+ int **rand_scale_luts;
+ ETS_POLARITY polarity;
+} ETS_Params;
+
+typedef struct _ETS_Ctx ETS_Ctx;
+
+ETS_Ctx *
+ets_new(const ETS_Params *params);
+
+void
+ets_line(ETS_Ctx *ctx, uchar **dest, const ETS_SrcPixel *const *src);
+
+void
+ets_free(ETS_Ctx *ctx);
+
+void *
+ets_malloc_aligned(int size, int align);
+
+void
+ets_free_aligned(void *p);
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/gs/toolbin/halftone/ETS/ipview.html b/gs/toolbin/halftone/ETS/ipview.html
new file mode 100644
index 000000000..97be637bb
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/ipview.html
@@ -0,0 +1,386 @@
+<html>
+<head>
+<title>Image Plane viewer</title>
+<script>
+
+// Check that we have a modern browser
+if (window.File && window.FileReader && window.FileList && window.Blob) {
+} else {
+ alert("Get a better browser!");
+}
+
+var imageDataBlock = function(block)
+{
+ this.block = block;
+ this.pos = 0;
+ this.width = 100;
+ this.height = 100;
+ this.depth = 1;
+ this.maxval = 255;
+ this.planar = false;
+}
+
+function error(message)
+{
+ alert(message);
+}
+
+imageDataBlock.prototype.getLine = function ()
+{
+ var line="";
+ var c;
+
+ while ((c = this.block[this.pos++]).charCodeAt(0) >= 32)
+ line += c;
+ return line;
+}
+
+imageDataBlock.prototype.updateImage = function()
+{
+ var w = this.width;
+ var h = this.height;
+ var d = this.depth;
+ var x, y, z;
+ var R, G, B;
+ var p = this.pos;
+ var canvas = this.canvas.getContext("2d")
+ var id = canvas.getImageData(0, 0, w, h);
+ var q = 0;
+
+ if (!this.planar)
+ {
+ for (y = h; y > 0; y--)
+ {
+ for (x = w; x > 0; x--)
+ {
+ var C = 0;
+ var M = 0;
+ var Y = 0;
+ var K = 0;
+ for (z = 0; z < d; z++)
+ {
+ var a = this.block.charCodeAt(p++);
+ var pl = this.planes[z];
+ if (pl.enabled)
+ {
+ C += a * pl.c;
+ M += a * pl.m;
+ Y += a * pl.y;
+ K += a * pl.k;
+ }
+ }
+ R = 255 - C - K;
+ if (R < 0) R = 0;
+ G = 255 - M - K;
+ if (G < 0) G = 0;
+ B = 255 - Y - K;
+ if (B < 0) B = 0;
+ id.data[q++] = R;
+ id.data[q++] = G;
+ id.data[q++] = B;
+ id.data[q++] = 255;
+ }
+ }
+ }
+ else
+ {
+ var fwd = w*h;
+ var back = w*h*d-1
+ for (y = h; y > 0; y--)
+ {
+ for (x = w; x > 0; x--)
+ {
+ R = 0;
+ G = 0;
+ B = 0;
+ for (z = 0; z < d; z++)
+ {
+ var a = this.block.charCodeAt(p);
+ p += fwd;
+ var pl = this.planes[z];
+ if (pl.enabled)
+ {
+ R += a * pl.c;
+ G += a * pl.m;
+ B += a * pl.y;
+ }
+ }
+ p -= back;
+ if (R > 255) R = 255;
+ if (G > 255) G = 255;
+ if (B > 255) B = 255;
+ id.data[q++] = R;
+ id.data[q++] = G;
+ id.data[q++] = B;
+ id.data[q++] = 255;
+ }
+ }
+ }
+ canvas.putImageData(id, 0, 0);
+}
+
+imageDataBlock.prototype.setDepth = function(depth_)
+{
+ var i;
+ this.depth = depth_;
+ this.planes = new Array(this.depth);
+ for (i=0; i < this.depth; i++)
+ {
+ this.planes[i] = new Object();
+ this.planes[i].c = 0;
+ this.planes[i].m = 0;
+ this.planes[i].y = 0;
+ this.planes[i].k = 1;
+ this.planes[i].name = "Spot";
+ this.planes[i].enabled = true;
+ }
+ if (this.depth == 1)
+ {
+ this.planes[0].name = "K";
+ }
+ else if (this.planar)
+ {
+ if (this.depth >= 3)
+ {
+ this.planes[0].c = 1;
+ this.planes[0].k = 0;
+ this.planes[0].name = "R";
+ this.planes[1].m = 1;
+ this.planes[1].k = 0;
+ this.planes[1].name = "G";
+ this.planes[2].y = 1;
+ this.planes[2].k = 0;
+ this.planes[2].name = "B";
+ i = 3;
+ }
+ else
+ {
+ this.planes[0].c = 1;
+ this.planes[0].m = 1;
+ this.planes[0].y = 1;
+ this.planes[0].k = 0;
+ this.planes[0].name = "Gray";
+ i = 1;
+ }
+ for (; i < this.depth; i++)
+ {
+ this.planes[i].c = 1;
+ this.planes[i].m = 1;
+ this.planes[i].y = 1;
+ this.planes[i].k = 0;
+ this.planes[i].name = "Plane";
+ this.planes[i].enabled = false;
+ }
+ }
+ else if (this.depth >= 4)
+ {
+ this.planes[0].c = 1;
+ this.planes[0].k = 0;
+ this.planes[0].name = "C";
+ this.planes[1].m = 1;
+ this.planes[1].k = 0;
+ this.planes[1].name = "M";
+ this.planes[2].y = 1;
+ this.planes[2].k = 0;
+ this.planes[2].name = "Y";
+ this.planes[3].name = "K";
+ }
+}
+
+imageDataBlock.prototype.planeChange = function(plane,checked)
+{
+ this.planes[plane].enabled = checked;
+ this.updateImage();
+}
+
+function strip(line)
+{
+ while (line.substring(0,1) == " ")
+ line = line.substring(1);
+ return line;
+}
+
+imageDataBlock.prototype.readPAM = function ()
+{
+ while (1)
+ {
+ var line = this.getLine();
+ if (line.substring(0, 5) == "WIDTH")
+ this.width = parseInt(line.substring(6), 10);
+ else if (line.substring(0, 6) == "HEIGHT")
+ this.height = parseInt(line.substring(7), 10);
+ else if (line.substring(0, 5) == "DEPTH")
+ this.setDepth(parseInt(line.substring(6), 10));
+ else if (line.substring(0, 6) == "MAXVAL")
+ this.maxval = parseInt(line.substring(7), 10);
+ else if (line.substring(0, 8) == "TUPLTYPE")
+ {
+ if (line.substring(9,13) == "CMYK")
+ {}
+ else if (line.substring(9,13) == "DEVN")
+ {}
+ else
+ return error("Not a CMYK or DEVN file!");
+ }
+ else if (line.substring(0, 1) == "#")
+ {
+ line = strip(line.substring(1));
+ if (line.split(" ")[0] == "PLANE")
+ {
+ line = strip(line.substring((line+" ").indexOf(" ")));
+ var p = parseInt(line, 10);
+ line = strip(line.substring((line+" ").indexOf(" ")));
+ this.planes[p].name = line.split(" ")[0];
+ line = strip(line.substring((line+" ").indexOf(" ")));
+ this.planes[p].c = parseFloat(line);
+ line = strip(line.substring((line+" ").indexOf(" ")));
+ this.planes[p].m = parseFloat(line);
+ line = strip(line.substring((line+" ").indexOf(" ")));
+ this.planes[p].y = parseFloat(line);
+ line = strip(line.substring((line+" ").indexOf(" ")));
+ this.planes[p].k = parseFloat(line);
+ }
+ }
+ else if (line.substring(0, 1) == "#")
+ {
+ }
+ else if (line.substring(0, 6) == "ENDHDR")
+ break;
+ else
+ return error("Unknown header field: "+line);
+ }
+}
+
+imageDataBlock.prototype.readPGM = function ()
+{
+ var i = 0;
+ var line = "";
+ while (i < 3)
+ {
+ if (line == "")
+ line = this.getLine();
+ else if (line.substring(0, 1) == "#")
+ line = "";
+ else if (line.substring(0, 1) == " ")
+ line = line.substring(1);
+ else if (line.substring(0, 1) == "\t")
+ line = line.substring(1);
+ else
+ {
+ if (i == 0)
+ this.width = parseInt(line, 10);
+ else if (i == 1)
+ this.height = parseInt(line, 10);
+ else if (i == 2)
+ this.maxval = parseInt(line, 10);
+ i++;
+ var idx = line.indexOf(" ");
+ if (idx >= 0)
+ line = line.substring(idx+1);
+ else
+ line = "";
+ }
+ }
+ this.setDepth(1);
+
+ var m = this.pos;
+ var n = "";
+ for (i = this.width * this.height; i > 0; i--)
+ {
+ n += String.fromCharCode(this.block.charCodeAt(m++)^255);
+ }
+ this.block = n;
+ this.pos = 0;
+}
+
+imageDataBlock.prototype.readRAW = function (name)
+{
+ this.planar = true;
+ name = name.substring(name.indexOf(name, "_")+1);
+ this.width = parseInt(name,10);
+ name = name.substring(name.indexOf(name, "x")+1);
+ this.height = parseInt(name,10);
+ name = name.substring(name.indexOf(name, "x")+1);
+ this.maxval = 255;
+ this.setDepth = this.setDepth(parseInt(name, 10));
+}
+
+function imageView(file, event)
+{
+ var viewsdiv = document.getElementById('views');
+ var viewdiv = document.createElement('div');
+ viewsdiv.appendChild(viewdiv);
+
+ var data = new imageDataBlock(event.target.result);
+ var line = "";
+ if (file.name.indexOf("raw") >= 0)
+ {
+ data.readRAW(file.name);
+ }
+ else
+ {
+ line = data.getLine();
+ if (line == "P7")
+ data.readPAM();
+ else if (line == "P5")
+ data.readPGM();
+ else
+ return error("Not a PAM/PGM file!");
+ }
+
+ var fixdiv = document.createElement('div');
+ fixdiv.setAttribute("style", "display:block; position:fixed; top:0px;right:0px;width:auto;height:auto;");
+ var text = file.name + " W="+data.width+" H="+data.height+" D="+data.depth;
+ fixdiv.appendChild(document.createTextNode(text));
+ fixdiv.appendChild(document.createElement('br'));
+ var form = document.createElement('form');
+ fixdiv.appendChild(form);
+ for (i=0; i < data.depth; i++)
+ {
+ var span = document.createElement('span');
+ var button = document.createElement('input');
+ var label = document.createElement('label');
+ button.setAttribute("type", "checkbox");
+ button.setAttribute("name", "plane"+i);
+ button.setAttribute("value", "yes");
+ button.setAttribute("onchange", "this.data.planeChange("+i+", this.checked)");
+ button.checked = 1;
+ button.data = data;
+ label.innerHTML=data.planes[i].name;
+ span.appendChild(button);
+ span.appendChild(label);
+ form.appendChild(span);
+ }
+ viewdiv.appendChild(fixdiv);
+
+ data.canvas = document.createElement('canvas');
+ data.canvas.setAttribute("width", data.width);
+ data.canvas.setAttribute("height", data.height);
+ viewdiv.appendChild(data.canvas);
+
+ data.updateImage();
+}
+
+function handleFileSelect(event)
+{
+ var files = event.target.files;
+ var f, i;
+
+ for (i=0; f=files[i]; i++)
+ {
+ var reader = new FileReader();
+ reader.onload = (function (theFile) { return function (e) { imageView(theFile, e); } })(f);
+ reader.readAsBinaryString(f);
+ }
+}
+
+</script>
+</head>
+<body>
+<input type="file" id="files" name="files[]">Select a .pam or .pgm</input>
+<div id=views>
+<script>
+ document.getElementById('files').addEventListener('change', handleFileSelect, false);
+</script>
+</body>
+</html>
diff --git a/gs/toolbin/halftone/ETS/test_ets.c b/gs/toolbin/halftone/ETS/test_ets.c
new file mode 100644
index 000000000..617f17948
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/test_ets.c
@@ -0,0 +1,855 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include "ets.h"
+
+#define noDUMP_FILE_NAME "dump.ebdp"
+
+#define LITTLE_ENDIAN /* Needed for PSD support */
+//#define TEST_PSD_DUMP
+
+/* PSD structure. Since this data can be compressed planar data we need an object
+ to maintain our context state. */
+struct psd_ctx_s {
+ int width;
+ int height;
+ int num_channels;
+ int depth;
+ int curr_row;
+ void *rle_row;
+ int *row_lengths;
+ int *band_row_length_index;
+ long *band_file_offset;
+ void *output_buffer;
+ void (*read_line)(ETS_SrcPixel **ibufs, int xs, FILE *fi, int planes, void *image_ctx);
+ void (*write_line)(uchar **obufs, int xs, FILE *fo, int planes, void *image_ctx);
+ void (*finalize)(void *image_ctx);
+ uchar *permute;
+};
+
+typedef struct psd_ctx_s psd_ctx_t;
+
+static void
+die(char *why)
+{
+ fprintf(stderr, "%s\n", why);
+ exit(1);
+}
+
+#define MAX_SIZE 65536
+
+#define M 16
+
+static const char * get_arg (int argc, char **argv, int *pi, const char *arg)
+{
+ if (arg[0] != 0) {
+ return arg;
+ } else {
+ (*pi)++;
+ if (*pi == argc) {
+ return NULL;
+ } else {
+ return argv[*pi];
+ }
+ }
+}
+
+static int usage (void)
+{
+ printf("Usage: ETS\n");
+ printf("ETS <options>\n");
+ printf(" -i <inputfile .pam or .pgm - omit for stdin\n");
+ printf(" -o <outputfile> same format as input - omit for stdout\n");
+ printf(" -g <gammafile> optional textual table of gamma values\n");
+ printf(" -e <style> ets style (0 off, 1 = normal, etc)\n");
+ printf(" -r <style> random noise style (0 off, 1 = rnd, 2 = tm\n");
+ printf(" -m <0 or 1> enable/disable multiplane optimisations\n");
+ printf(" -l <levels> number of levels in the output\n");
+ printf(" -a X:Y aspect ratio of input\n");
+ printf(" -n <noise level> noise level (0 to 8)\n");
+ printf("\n\nDefaults: -e1 -r1 -m1 -l2 -a1:1 -n0\n");
+ return 1;
+}
+
+static void get4(int *value, uchar *buf)
+{
+#ifdef LITTLE_ENDIAN
+ *value = buf[3] + (buf[2] << 8) + (buf[1] << 16) + (buf[0] << 24);
+#else
+ *value = buf[0] + (buf[1] << 8) + (buf[2] << 16) + (buf[3] << 24);
+#endif
+}
+
+static void get2(int *value, uchar *buf)
+{
+#ifdef LITTLE_ENDIAN
+ *value = buf[1] + (buf[0] << 8);
+#else
+ *value = buf[0] + (buf[1] << 8);
+#endif
+}
+
+/* PSD uses PackBits RLE */
+static void rle_decode(uchar *in_buff, int in_length,
+ uchar *out_buff, int out_length)
+{
+ signed char hvalue, *input_buf;
+ char value;
+ int in_pos = 0, out_pos = 0;
+
+ input_buf = (signed char*) in_buff;
+ while (out_pos < out_length)
+ {
+ hvalue = input_buf[in_pos];
+ if (hvalue >= 0)
+ {
+ /* 1+hvalue literal bytes follow */
+ memcpy(&(out_buff[out_pos]), &(in_buff[in_pos + 1]), (1 + hvalue));
+ in_pos += (1 + (1 + hvalue));
+ out_pos += (1 + hvalue);
+ }
+ else if (hvalue > -128)
+ {
+ /* Repeat next byte 1-n times */
+ value = in_buff[in_pos+1];
+ memset(&(out_buff[out_pos]), value, (1 - hvalue));
+ in_pos += 2;
+ out_pos += (1 - hvalue);
+ }
+ else
+ in_pos += 1;
+ }
+}
+
+/* Photoshop RLE 8 bit case */
+static void read_psd_line_rle8(ETS_SrcPixel **ibufs, int xs, FILE *fi, int planes,
+ void *image_ctx)
+{
+ int kk;
+ psd_ctx_t *psd_ctx = (psd_ctx_t*) image_ctx;
+ long curr_file_offset;
+ int curr_row_length_index;
+ int curr_length;
+
+ /* Loop across each band */
+ for (kk = 0; kk < planes; kk++)
+ {
+ /* Get a pointer and a length for the current one */
+ curr_file_offset = psd_ctx->band_file_offset[kk];
+ curr_row_length_index = psd_ctx->band_row_length_index[kk];
+ curr_length = psd_ctx->row_lengths[curr_row_length_index];
+ /* Get to where we are located in the file, read and decode */
+ fseek(fi, curr_file_offset, SEEK_SET);
+ fread(psd_ctx->rle_row, 1, curr_length, fi);
+ rle_decode((uchar*) psd_ctx->rle_row, curr_length, ibufs[psd_ctx->permute[kk]],
+ psd_ctx->width);
+ /* Update where we are in each band */
+ psd_ctx->band_file_offset[kk] += curr_length;
+ psd_ctx->band_row_length_index[kk] += 1;
+ }
+}
+
+/* Photoshop unencoded 8 bit case */
+static void read_psd_line8(ETS_SrcPixel **ibufs, int xs, FILE *fi, int planes,
+ void *image_ctx)
+{
+ int kk;
+ psd_ctx_t *psd_ctx = (psd_ctx_t*) image_ctx;
+ long curr_file_offset;
+ int curr_length = psd_ctx->width;
+
+ /* Loop across each band */
+ for (kk = 0; kk < planes; kk++)
+ {
+ /* Get a pointer and a length for the current one */
+ curr_file_offset = psd_ctx->band_file_offset[kk];
+ /* Get to where we are located in the file, read and decode */
+ fseek(fi, curr_file_offset, SEEK_SET);
+ fread(ibufs[psd_ctx->permute[kk]], 1, curr_length, fi);
+ /* Update where we are in each band */
+ psd_ctx->band_file_offset[kk] += curr_length;
+ }
+}
+
+/* Photoshop 8 bit unencoded output. Due to its planar form, this is stored in a
+ temp buffer until we reach the final line, at which point we write out the
+ entire thing. */
+static void write_psd_line8(uchar **obufs, int xs, FILE *fo, int planes,
+ void *image_ctx)
+{
+ int kk;
+ psd_ctx_t *psd_ctx = (psd_ctx_t*) image_ctx;
+ const void *input_buf;
+ uchar *output_buff = (uchar*) psd_ctx->output_buffer;
+ long plane_size = (psd_ctx->width) * (psd_ctx->height);
+ long buffer_size = plane_size * planes;
+
+ output_buff += ((psd_ctx->curr_row) * (psd_ctx->width));
+ for (kk = 0; kk < planes; kk++)
+ {
+ input_buf = (const void*) obufs[psd_ctx->permute[kk]];
+ memcpy(output_buff, input_buf, psd_ctx->width);
+ output_buff += plane_size;
+ }
+ psd_ctx->curr_row += 1;
+ /* If at end, then dump the buffer */
+ if (psd_ctx->curr_row == psd_ctx->height)
+ fwrite(psd_ctx->output_buffer, 1, buffer_size, fo);
+}
+
+/* Photoshop unencoded 16 bit case */
+static void read_psd_line16(ETS_SrcPixel **ibufs, int xs, FILE *fi, int planes,
+ void *image_ctx)
+{
+ int kk;
+ psd_ctx_t *psd_ctx = (psd_ctx_t*) image_ctx;
+ long curr_file_offset;
+ int curr_length = psd_ctx->width * 2;
+ int i;
+ unsigned short temp_value1, temp_value2;
+
+ /* Loop across each band */
+ for (kk = 0; kk < planes; kk++)
+ {
+ /* Get a pointer and a length for the current one */
+ curr_file_offset = psd_ctx->band_file_offset[kk];
+ /* Get to where we are located in the file, read and decode */
+ fseek(fi, curr_file_offset, SEEK_SET);
+ fread(ibufs[psd_ctx->permute[kk]], 1, curr_length, fi);
+#ifdef LITTLE_ENDIAN
+ for (i = 0; i < psd_ctx->width; i++)
+ {
+ temp_value1 = ibufs[psd_ctx->permute[kk]][i];
+ temp_value2 = ((temp_value1 & 0xff) << 8) + ((temp_value1 & 0xff00) >> 8);
+ ibufs[psd_ctx->permute[kk]][i] = temp_value2;
+ }
+#endif
+ /* Update where we are in each band */
+ psd_ctx->band_file_offset[kk] += curr_length;
+ }
+}
+
+/* Photoshop 16 bit unencoded output. Due to its planar form, this is stored in a
+ temp buffer until we reach the final line, at which point we write out the entire
+ thing. This is not used really, but here for completeness and some testing.
+ Needs fix for little endian */
+static void write_psd_line16(uchar **obufs, int xs, FILE *fo, int planes,
+ void *image_ctx)
+{
+ int kk;
+ psd_ctx_t *psd_ctx = (psd_ctx_t*) image_ctx;
+ const void *input_buf;
+ uchar *output_buff = (uchar*) psd_ctx->output_buffer;
+ long plane_size = (psd_ctx->width) * (psd_ctx->height) * 2;
+ long buffer_size = plane_size * planes;
+
+ output_buff += ((psd_ctx->curr_row) * (psd_ctx->width)) * 2;
+ for (kk = 0; kk < planes; kk++)
+ {
+ input_buf = (const void*) obufs[psd_ctx->permute[kk]];
+ memcpy(output_buff, input_buf, psd_ctx->width * 2);
+ output_buff += plane_size;
+ }
+ psd_ctx->curr_row += 1;
+ /* If at end, then dump the buffer */
+ if (psd_ctx->curr_row == psd_ctx->height)
+ fwrite(psd_ctx->output_buffer, 1, buffer_size, fo);
+}
+
+static void finalize_psd(void *image_ctx)
+{
+ psd_ctx_t *psd_ctx = (psd_ctx_t*) image_ctx;
+
+ if (psd_ctx->output_buffer != NULL)
+ free(psd_ctx->output_buffer);
+ if (psd_ctx->band_row_length_index != NULL)
+ free(psd_ctx->band_row_length_index);
+ if (psd_ctx->band_file_offset != NULL)
+ free(psd_ctx->band_file_offset);
+ if (psd_ctx->rle_row != NULL)
+ free(psd_ctx->rle_row);
+ if (psd_ctx->permute != NULL)
+ free(psd_ctx->permute);
+}
+
+static void read_psd(FILE *fi, psd_ctx_t *psd_ctx, FILE *fo)
+{
+ uchar buf[256];
+ int depth;
+ uchar num_channel;
+ int height, width, color_mode;
+ int size;
+ int bytes;
+ uchar *temp_buff;
+ int kk, jj;
+ long data_size;
+ int codec, maxlength = 0;
+ long count = 0;
+ long curr_count = 0;
+ int index = 0;
+#ifdef TEST_PSD_DUMP
+ uchar *in_buff, *out_buff;
+#endif
+
+ psd_ctx->curr_row = 0;
+
+ /* rewind and get the header information */
+ rewind(fi);
+
+ fread(buf, 1, 26, fi);
+ count += 26;
+
+ num_channel = buf[13];
+ get4(&height, &(buf[14]));
+ get4(&width, &(buf[18]));
+
+ depth = buf[23];
+ color_mode = buf[25];
+
+ if (!(depth == 8 || depth == 16))
+ die("Only 8 or 16 bit PSD files supported");
+
+ if (depth == 16 && (sizeof(ETS_SrcPixel) != 2 || ETS_SRC_MAX != 65535))
+ die("ETS_SrcPixel type and ETS_SRC_MAX in ets.h not set for 16 bit support!");
+
+ if (depth == 8 && (sizeof(ETS_SrcPixel) != 1 || ETS_SRC_MAX != 255))
+ die("ETS_SrcPixel type and ETS_SRC_MAX in ets.h not set for 8 bit support!");
+
+ /* Dont handle duotone or indexed data at this time */
+ if (color_mode == 2 || color_mode == 8)
+ die("Indexed and Duotone PSD files not supported");
+
+ psd_ctx->depth = depth;
+ psd_ctx->height = height;
+ psd_ctx->width = width;
+ psd_ctx->num_channels = num_channel;
+
+ if (depth == 8)
+ bytes = 1;
+ else
+ bytes = 2;
+
+ /* Change the output to 8 bit */
+ buf[23] = 8;
+
+ /* Write out the header information */
+ fwrite(buf, 1, 26, fo);
+
+ /* Index or duotone information */
+ fread(buf, 1, 4, fi);
+ fwrite(buf, 1, 4, fo);
+ count += 4;
+
+ /* Record information. Pass along... */
+ fread(buf, 1, 4, fi);
+ get4(&size, buf);
+ fwrite(buf, 1, 4, fo);
+ temp_buff = (uchar*) malloc(size);
+ fread(temp_buff, 1, size, fi);
+ fwrite(temp_buff, 1, size, fo);
+ free(temp_buff);
+ count += (size + 4);
+
+ /* Layer information. Pass along... */
+ fread(buf, 1, 4, fi);
+ get4(&size, buf);
+ fwrite(buf, 1, 4, fo);
+ temp_buff = (uchar*) malloc(size);
+ fread(temp_buff, 1, size, fi);
+ fwrite(temp_buff, 1, size, fo);
+ free(temp_buff);
+ count += (size + 4);
+
+ /* Image information. The stuff we want. Only support raw or RLE types for
+ input. Output is uncompressed */
+ fread(buf, 1, 2, fi);
+ codec = buf[1];
+ if (!(codec == 0 || codec == 1))
+ die("ZIP data in PSD files not supported");
+
+ buf[1] = 0;
+ fwrite(buf, 1, 2, fo);
+ count += 2;
+
+ if (codec == 1 && depth == 16)
+ die("PSD RLE 16 bit files not supported");
+
+ /* Allocate the output buffer */
+ psd_ctx->output_buffer = malloc(num_channel * height * width * bytes);
+
+ if (codec == 1)
+ {
+ /* RLE. Need to decompress the data. Each scan line is individually
+ compressed. First read in the size for each compressed line */
+ data_size = num_channel * height;
+ psd_ctx->row_lengths = (int*) malloc(data_size * sizeof(int));
+ psd_ctx->band_file_offset = (long*) malloc(num_channel * sizeof(long));
+ psd_ctx->band_row_length_index = (int*) malloc(num_channel * sizeof(int));
+ count += (2 * data_size); /* This gets us to the start of the image data */
+ /* Here we compute where in the file we need to go, to get the start of
+ the scan line in each band, we compute the max length of all the
+ encoded bands and get the length of each encoded band */
+ for (jj = 0; jj < num_channel; jj++)
+ {
+ (psd_ctx->band_file_offset)[jj] = count + curr_count;
+ for (kk = 0; kk < height; kk++)
+ {
+ fread(buf, 1, 2, fi);
+ get2(&((psd_ctx->row_lengths)[index]), buf);
+ if (maxlength < (psd_ctx->row_lengths)[index])
+ maxlength = (psd_ctx->row_lengths)[index];
+ curr_count = curr_count + (psd_ctx->row_lengths)[index];
+ index++;
+ }
+ }
+ psd_ctx->rle_row = (void*) malloc(maxlength);
+ psd_ctx->read_line = read_psd_line_rle8;
+ psd_ctx->write_line = write_psd_line8;
+ for (kk = 0; kk < num_channel; kk++)
+ {
+ (psd_ctx->band_row_length_index)[kk] = kk * height;
+ }
+#ifdef TEST_PSD_DUMP
+ /* Now do the decode for testing */
+ in_buff = (uchar*) malloc(maxlength);
+ out_buff = (uchar*) malloc(width);
+ for (kk = 0; kk < data_size; kk++)
+ {
+ fread(in_buff, 1, (psd_ctx->row_lengths)[kk], fi);
+ rle_decode(in_buff, (psd_ctx->row_lengths)[kk], out_buff, width);
+ fwrite(out_buff, 1, width, fo);
+ }
+ fclose(fo);
+ free(in_buff);
+ free(out_buff);
+ die("Testing case");
+#endif
+ }
+ else
+ {
+ /* Uncompressed data. Read directly */
+ psd_ctx->row_lengths = NULL;
+ psd_ctx->rle_row = NULL;
+ psd_ctx->band_row_length_index = NULL;
+ psd_ctx->band_file_offset = (long*) malloc(num_channel * sizeof(long));
+ for (kk = 0; kk < num_channel; kk++)
+ {
+ (psd_ctx->band_file_offset)[kk] = count + height * width * kk * bytes;
+ }
+ if (depth == 8)
+ {
+ psd_ctx->read_line = read_psd_line8;
+ psd_ctx->write_line = write_psd_line8;
+ }
+ else
+ {
+ psd_ctx->read_line = read_psd_line16;
+ psd_ctx->write_line = write_psd_line8;
+ }
+ }
+ psd_ctx->finalize = finalize_psd;
+ psd_ctx->permute = (uchar*) malloc(num_channel);
+ /* A default initialization */
+ for (kk = 0; kk < num_channel; kk++)
+ {
+ psd_ctx->permute[kk] = kk;
+ }
+}
+
+static void read_pgm(FILE *fi, int *xs, int *ys, FILE *fo)
+{
+ char buf[256];
+ int depth;
+
+ do
+ fgets(buf, sizeof(buf), fi);
+ while (buf[0] == '#');
+ sscanf (buf, "%d", xs);
+ do
+ fgets (buf, sizeof(buf), fi);
+ while (buf[0] == '#');
+ sscanf (buf, "%d", ys);
+ if (*xs <= 0 || *ys <= 0 || *xs > MAX_SIZE || *ys > MAX_SIZE)
+ die("Input image size out of range");
+
+ do
+ fgets(buf, sizeof(buf), fi);
+ while (buf[0] == '#');
+ sscanf(buf, "%d", &depth);
+ if (depth != 255)
+ die("Only works with depth=255 images");
+
+ fprintf(fo, "P5\n%d %d\n255\n", *xs, *ys);
+}
+
+static int read_pam(FILE *fi, int *xs, int *ys, FILE *fo)
+{
+ char buf[256];
+ int i, depth;
+ char c;
+
+ fprintf(fo, "P7\n");
+
+ do
+ {
+ fgets(buf, sizeof(buf), fi);
+ if (buf[0] == '#')
+ {
+ fprintf(fo, "%s", buf);
+ continue;
+ }
+ if (buf[0] == '\n' || buf[0] == '\r')
+ continue;
+ if (sscanf(buf, "WIDTH %d", xs))
+ {
+ fprintf(fo, "WIDTH %d\n", *xs);
+ }
+ else if (sscanf(buf, "HEIGHT %d", ys))
+ {
+ fprintf(fo, "HEIGHT %d\n", *ys);
+ }
+ else if (sscanf(buf, "DEPTH %d", &depth))
+ {
+ if (depth < 4)
+ die("Only CMYK/DEVN pams supported");
+ fprintf(fo, "DEPTH %d\n", depth);
+ }
+ else if (sscanf(buf, "MAXVAL %d", &i))
+ {
+ if (i != 255)
+ die("Only pams with MAXVAL=255 supported");
+ fprintf(fo, "MAXVAL 255\n");
+ }
+ else if (sscanf(buf, "TUPLTYPE DEV%c", &c) && c == 'N')
+ {
+ fprintf(fo, "TUPLTYPE DEVN\n");
+ }
+ else if (sscanf(buf, "TUPLTYPE CMY%c", &c) && c == 'K')
+ {
+ fprintf(fo, "TUPLTYPE CMYK\n");
+ }
+ else if (sscanf(buf, "TUPLTYP%c") && c == 'E')
+ {
+ die("Only CMYK/DEVN pams supported");
+ }
+ else if (sscanf(buf, "ENDHD%c", &c) && c == 'R')
+ {
+ fprintf(fo, "ENDHDR\n");
+ break;
+ }
+ else
+ {
+ printf(stderr, "Unknown header field: %s\n", buf);
+ die("Unknown header field\n");
+ }
+ }
+ while (1);
+
+ return depth;
+}
+
+static void read_pgm_line(ETS_SrcPixel **ibufs, int xs, FILE *fi, int planes,
+ void *image_ctx)
+{
+ int nbytes;
+ nbytes = fread(ibufs[0], 1, xs, fi);
+ if (nbytes != xs)
+ die("Error reading image (file truncated?)");
+}
+
+static void read_pam_line(ETS_SrcPixel **ibufs, int xs, FILE *fi, int planes,
+ void *image_ctx)
+{
+ int i, j, c = 0;
+
+ for (i = 0; i < xs && c != EOF; i++)
+ {
+ ibufs[1][i] = 255-fgetc(fi);
+ ibufs[2][i] = 255-fgetc(fi);
+ ibufs[3][i] = 255-fgetc(fi);
+ ibufs[0][i] = 255-(c = fgetc(fi));
+ for (j=4; j < planes; j++)
+ ibufs[j][i] = 255-(c = fgetc(fi));
+ }
+ if (c == EOF)
+ die("Error reading image (file truncated?)");
+}
+
+static void write_pgm_line(uchar **obufs, int xs, FILE *fo, int planes,
+ void *image_ctx)
+{
+ fwrite(obufs[0], 1, xs, fo);
+}
+
+static void write_pam_line(uchar **obufs, int xs, FILE *fo, int planes,
+ void *image_ctx)
+{
+ int i, j;
+
+ for (i = 0; i < xs; i++)
+ {
+ fputc(255-obufs[1][i], fo);
+ fputc(255-obufs[2][i], fo);
+ fputc(255-obufs[3][i], fo);
+ fputc(255-obufs[0][i], fo);
+ for (j = 4; j < planes; j++)
+ {
+ fputc(255-obufs[j][i], fo);
+ }
+ }
+}
+
+int
+main(int argc, char **argv)
+{
+ FILE *fi = stdin;
+ FILE *fo = stdout;
+ char buf[256];
+ int xs, ys;
+ int xsb;
+ ETS_POLARITY polarity;
+ ETS_Params params;
+ ETS_Ctx *ctx;
+ int lut[ETS_SRC_MAX+1], i;
+ int *luts[M];
+ int rs_lut[ETS_SRC_MAX+1];
+ int *rs_luts[M];
+ int strengths[M][M] = { { 0 },
+ { 0 },
+ { 0 },
+ { 128, 51, 51, 13 }, // KCMY
+ { 0 },
+ { 128, 51, 51, 13, 13, 13 }, // KCMYcm
+ { 128, 51, 51, 13, 13, 13, 13 }, // KCMYcmk
+ { 128, 51, 51, 13, 13, 13, 13, 13}, // KCMYcmkk
+ };
+ /* Used now in PSD case so that we can reorder the planes according to the above weights */
+ uchar permutes[M][M] = { { 0 },
+ { 0 },
+ { 0 },
+ { 3, 0, 1, 2 }, // KCMY
+ { 0 },
+ { 3, 0, 1, 2, 4, 5 }, // KCMYcm
+ { 3, 0, 1, 2, 4, 5, 6 }, // KCMYcmk
+ {3, 0, 1, 2, 4, 5, 6, 7}, // KCMYcmkk
+ };
+ int c1_scale[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1 };
+ ETS_SrcPixel *ibufs[M] = { 0 };
+ uchar *obufs[M] = { 0 };
+ int planes;
+ void (*read_line)(ETS_SrcPixel **ibufs, int xs, FILE *fi, int planes, void *image_ctx);
+ void (*write_line)(uchar **obufs, int xs, FILE *fo, int planes, void *image_ctx);
+ void (*finalize)(void *image_ctx);
+ char *gamma_tab = NULL;
+ int multiplane = 1;
+ int ets_style = 1;
+ int r_style = 1;
+ int levels = 2;
+ int aspect_x = 1;
+ int aspect_y = 1;
+ int noise = 0;
+ psd_ctx_t psd_ctx;
+ void *image_ctx = NULL;
+ uchar byte_count = 1;
+
+ int y;
+
+ for (i = 1; i < argc; i++)
+ {
+ const char *arg = argv[i];
+ const char *arg_value;
+
+ if (arg[0] == '-')
+ {
+ if ((arg_value = get_arg(argc, argv, &i, arg + 2)) == NULL)
+ goto usage_exit;
+
+ switch (arg[1])
+ {
+ case 'i':
+ fi = fopen(arg_value,"rb");
+ if (fi == NULL)
+ die ("Input not found");
+ break;
+ case 'o':
+ fo = fopen(arg_value,"wb");
+ if (fo == NULL)
+ die ("Output failed to open");
+ break;
+ case 'g':
+ gamma_tab = arg_value;
+ break;
+ case 'm':
+ multiplane = atoi(arg_value);
+ break;
+ case 'l':
+ levels = atoi(arg_value);
+ break;
+ case 'e':
+ ets_style = atoi(arg_value);
+ break;
+ case 'r':
+ r_style = atoi(arg_value);
+ break;
+ case 'n':
+ noise = atoi(arg_value);
+ break;
+ case 'a':
+ sscanf(arg_value, "%d:%d", &aspect_x, &aspect_y);
+ break;
+ default:
+ goto usage_exit;
+ }
+ }
+ }
+
+ fgets(buf, sizeof(buf), fi);
+ xs = ys = 0;
+ if (buf[0] == 'P' && buf[1] == '5')
+ {
+ read_pgm(fi, &xs, &ys, fo);
+ read_line = read_pgm_line;
+ write_line = write_pgm_line;
+ planes = 1;
+ finalize = NULL;
+ polarity = ETS_BLACK_IS_ZERO;
+ }
+ else if (buf[0] == 'P' && buf[1] == '7')
+ {
+ planes = read_pam(fi, &xs, &ys, fo);
+ read_line = read_pam_line;
+ write_line = write_pam_line;
+ finalize = NULL;
+ polarity = ETS_BLACK_IS_ZERO;
+ }
+ else if (buf[0] == '8' && buf[1] == 'B' && buf[2] == 'P' && buf[3] == 'S')
+ {
+ read_psd(fi, &psd_ctx, fo);
+ read_line = psd_ctx.read_line;
+ write_line = psd_ctx.write_line;
+ finalize = psd_ctx.finalize;
+ planes = psd_ctx.num_channels;
+ xs = psd_ctx.width;
+ ys = psd_ctx.height;
+ image_ctx = (void*) &psd_ctx;
+ if (psd_ctx.depth == 16)
+ byte_count = 2;
+ polarity = ETS_BLACK_IS_ONE;
+ /* Set the read and write permutation order according to permutes array */
+ if (permutes[planes-1] != 0)
+ {
+ int sum = 0; /* an error check */
+ for (i = 0; i < planes; i++)
+ {
+ psd_ctx.permute[i] = permutes[planes-1][i];
+ sum += psd_ctx.permute[i];
+ }
+ if (sum != ((float) planes/2.0) * (float) (planes - 1.0))
+ die ("Permutation vector values are not valid");
+ }
+ }
+ else
+ die("Need pgmraw, pamraw or psd image on input");
+
+ xsb = xs;
+ for (i = 0; i < planes; i++)
+ {
+ ibufs[i] = (ETS_SrcPixel*) malloc(xs * byte_count);
+ obufs[i] = (uchar*) ets_malloc_aligned(xsb + 16, 16);
+ }
+
+ /* This sets up a simple gamma lookup table. */
+ if (gamma_tab)
+ {
+ FILE *lutf = fopen(gamma_tab, "r");
+ for (i = 0; i < (ETS_SRC_MAX+1); i++)
+ fscanf(lutf, "%d", &lut[i]);
+ fclose(lutf);
+ }
+ else
+ {
+ double scale = ETS_SRC_MAX;
+ for (i = 0; i < (ETS_SRC_MAX+1); i++)
+#if 1
+ lut[i] = (int)((1 << 24) * (pow (i / scale, 1.0)));
+#else
+ lut[i] = (1 << 24) * (0.88 + 0.02 * i / 255.0);
+#endif
+ }
+
+ for (i = 0; i < (ETS_SRC_MAX+1); i++)
+ rs_lut[i] = 2 << 16;
+
+#ifdef DUMP_FILE_NAME
+ params.dump_file = fopen(DUMP_FILE_NAME, "wb");
+#else
+ params.dump_file = NULL;
+#endif
+ params.dump_level = ETS_DUMP_ALL;
+
+ params.width = xs;
+ params.n_planes = planes;
+ params.levels = levels;
+ for (i = 0; i < planes; i++)
+ luts[i] = lut;
+ params.luts = luts;
+ params.strengths = (multiplane ? strengths[planes-1] : strengths[0]);
+ params.aspect_x = aspect_x;
+ params.aspect_y = aspect_y;
+ params.distscale = 0;
+ params.rand_scale = noise;
+ params.c1_scale = c1_scale;
+ params.ets_style = ets_style;
+ params.r_style = r_style;
+ params.polarity = polarity;
+ for (i = 0; i < planes; i++)
+ rs_luts[i] = rs_lut;
+ params.rand_scale_luts = rs_luts;
+ params.rand_scale_luts = NULL;
+ ctx = ets_new(&params);
+ for (y = 0; y < ys; y++)
+ {
+ int x;
+
+ read_line(ibufs, xs, fi, planes, image_ctx);
+ ets_line(ctx, obufs, (const ETS_SrcPixel *const *)&ibufs);
+
+ for (i = 0; i < planes; i++)
+ {
+ uchar *obuf = obufs[i];
+ if (polarity == ETS_BLACK_IS_ONE)
+ {
+ for (x = 0; x < xs; x++)
+ {
+ obuf[x] = obuf[x] * 255 / (params.levels - 1);
+ }
+ }
+ else
+ {
+ for (x = 0; x < xs; x++)
+ {
+ obuf[x] = 255 - obuf[x] * 255 / (params.levels - 1);
+ }
+ }
+ }
+ write_line(obufs, xs, fo, planes, image_ctx);
+ }
+ if (finalize != NULL)
+ finalize(image_ctx);
+
+ ets_free(ctx);
+ for (i=0; i < planes; i++)
+ {
+ ets_free_aligned(obufs[i]);
+ free(ibufs[i]);
+ }
+ if (fi != stdin)
+ fclose(fi);
+ if (fo != stdout)
+ fclose(fo);
+
+ return 0;
+ usage_exit:
+ return usage();
+}
diff --git a/gs/toolbin/halftone/ETS/tm.h b/gs/toolbin/halftone/ETS/tm.h
new file mode 100644
index 000000000..e96074f1d
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/tm.h
@@ -0,0 +1,4099 @@
+#define TM_WIDTH 256
+#define TM_HEIGHT 256
+const signed char tmmat[] = {
+ 51, -28, 14, 31, 43, -58, -27, 45, -45, 38, 1, 2, -30, -1, 62, 42,
+ 10, 35, -60, 36, -80, -8, -55, 84, -59, 15, -43, -42, 84, -47, 0, 3,
+ 9, -50, 44, -2, -22, 48, -68, 42, -20, 37, -33, 55, -41, -24, 10, 30,
+ -100, 70, 0, -35, -35, 21, 36, -33, -22, -33, 46, -43, -55, 75, 33, 54,
+ -40, 26, -15, 36, -31, 20, 43, -22, -3, 41, 14, 13, -53, 14, 16, -16,
+ 56, -34, 6, 41, 44, -7, -16, 46, -27, 39, 68, 21, 12, 43, -29, 71,
+ -44, 17, 10, 63, -31, -47, 49, 49, -68, 68, -4, -28, 22, -50, 45, -24,
+ 12, -20, -46, -18, 21, 8, -59, 62, -33, -17, -23, 7, 50, 54, -11, -23,
+ 60, -8, -23, -35, 35, 1, -45, 66, -61, 95, -31, 74, -68, 84, -104, 38,
+ -36, -36, 21, -6, -10, 61, -1, 18, -61, -13, 33, -44, -28, -13, -8, 33,
+ 10, 56, -60, -51, 87, -43, 88, -75, 110, -84, 88, -58, -59, 88, 15, -33,
+ -47, -21, 63, 47, -13, 3, 9, -21, 45, -46, 3, 50, -31, 63, -17, 48,
+ 27, 51, -67, 48, 26, 37, 38, 8, 49, -3, 16, 14, -18, 0, -41, 30,
+ 41, -47, 65, -44, 50, -33, 43, -7, 10, -24, -62, 43, -22, 55, -11, 66,
+ -34, 19, 44, -66, 24, 28, 71, 4, -41, 41, 20, -51, -20, 0, 47, -42,
+ 24, -2, 17, -38, 37, -54, 24, -56, -4, 18, -12, -8, -24, -56, 36, -26,
+ 3, -51, 38, -83, 28, -3, 20, -49, 31, -64, -44, 40, 14, -48, -50, -39,
+ -12, -17, 47, -43, 68, -9, 9, -82, 88, -89, 85, -24, -41, -11, 45, 34,
+ 5, 55, -68, 36, -43, 13, 53, 12, 41, -49, 32, -3, -30, 50, 27, 34,
+ 7, 11, -23, -16, 55, -29, -28, 48, 2, -11, -25, 52, 41, -72, 19, -21,
+ 36, 6, -44, -27, 22, -55, -54, -7, -45, 15, 19, -14, 43, 19, -26, -14,
+ -36, 8, 21, -31, -45, -33, -45, 31, -25, -44, -18, -47, -17, 30, -1, -39,
+ 25, 20, -13, -84, 69, 3, -10, -44, 42, -29, 39, -22, -23, -18, 40, -7,
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diff --git a/gs/toolbin/halftone/ETS/win32/ETS.sln b/gs/toolbin/halftone/ETS/win32/ETS.sln
new file mode 100644
index 000000000..63c293e38
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/win32/ETS.sln
@@ -0,0 +1,20 @@
+
+Microsoft Visual Studio Solution File, Format Version 9.00
+# Visual Studio 2005
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ETS", "ETS.vcproj", "{9F937420-ED89-4C41-AED3-52937666B60E}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Win32 = Debug|Win32
+ Release|Win32 = Release|Win32
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {9F937420-ED89-4C41-AED3-52937666B60E}.Debug|Win32.ActiveCfg = Debug|Win32
+ {9F937420-ED89-4C41-AED3-52937666B60E}.Debug|Win32.Build.0 = Debug|Win32
+ {9F937420-ED89-4C41-AED3-52937666B60E}.Release|Win32.ActiveCfg = Release|Win32
+ {9F937420-ED89-4C41-AED3-52937666B60E}.Release|Win32.Build.0 = Release|Win32
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+EndGlobal
diff --git a/gs/toolbin/halftone/ETS/win32/ETS.vcproj b/gs/toolbin/halftone/ETS/win32/ETS.vcproj
new file mode 100644
index 000000000..09f6c14d2
--- /dev/null
+++ b/gs/toolbin/halftone/ETS/win32/ETS.vcproj
@@ -0,0 +1,196 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+ ProjectType="Visual C++"
+ Version="8.00"
+ Name="ETS"
+ ProjectGUID="{9F937420-ED89-4C41-AED3-52937666B60E}"
+ RootNamespace="ETS"
+ TargetFrameworkVersion="196613"
+ >
+ <Platforms>
+ <Platform
+ Name="Win32"
+ />
+ </Platforms>
+ <ToolFiles>
+ </ToolFiles>
+ <Configurations>
+ <Configuration
+ Name="Debug|Win32"
+ OutputDirectory="$(SolutionDir)$(ConfigurationName)"
+ IntermediateDirectory="$(ConfigurationName)"
+ ConfigurationType="1"
+ CharacterSet="2"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="0"
+ MinimalRebuild="true"
+ BasicRuntimeChecks="3"
+ RuntimeLibrary="3"
+ WarningLevel="3"
+ DebugInformationFormat="4"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ GenerateDebugInformation="true"
+ TargetMachine="1"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ <Configuration
+ Name="Release|Win32"
+ OutputDirectory="$(SolutionDir)$(ConfigurationName)"
+ IntermediateDirectory="$(ConfigurationName)"
+ ConfigurationType="1"
+ CharacterSet="2"
+ WholeProgramOptimization="1"
+ >
+ <Tool
+ Name="VCPreBuildEventTool"
+ />
+ <Tool
+ Name="VCCustomBuildTool"
+ />
+ <Tool
+ Name="VCXMLDataGeneratorTool"
+ />
+ <Tool
+ Name="VCWebServiceProxyGeneratorTool"
+ />
+ <Tool
+ Name="VCMIDLTool"
+ />
+ <Tool
+ Name="VCCLCompilerTool"
+ Optimization="2"
+ EnableIntrinsicFunctions="true"
+ RuntimeLibrary="2"
+ EnableFunctionLevelLinking="true"
+ WarningLevel="3"
+ DebugInformationFormat="3"
+ />
+ <Tool
+ Name="VCManagedResourceCompilerTool"
+ />
+ <Tool
+ Name="VCResourceCompilerTool"
+ />
+ <Tool
+ Name="VCPreLinkEventTool"
+ />
+ <Tool
+ Name="VCLinkerTool"
+ GenerateDebugInformation="true"
+ OptimizeReferences="2"
+ EnableCOMDATFolding="2"
+ TargetMachine="1"
+ />
+ <Tool
+ Name="VCALinkTool"
+ />
+ <Tool
+ Name="VCManifestTool"
+ />
+ <Tool
+ Name="VCXDCMakeTool"
+ />
+ <Tool
+ Name="VCBscMakeTool"
+ />
+ <Tool
+ Name="VCFxCopTool"
+ />
+ <Tool
+ Name="VCAppVerifierTool"
+ />
+ <Tool
+ Name="VCPostBuildEventTool"
+ />
+ </Configuration>
+ </Configurations>
+ <References>
+ </References>
+ <Files>
+ <Filter
+ Name="Source Files"
+ Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
+ UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
+ >
+ <File
+ RelativePath="..\ets.c"
+ >
+ </File>
+ <File
+ RelativePath="..\test_ets.c"
+ >
+ </File>
+ </Filter>
+ <Filter
+ Name="Header Files"
+ Filter="h;hpp;hxx;hm;inl;inc;xsd"
+ UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
+ >
+ <File
+ RelativePath="..\ets.h"
+ >
+ </File>
+ <File
+ RelativePath="..\tm.h"
+ >
+ </File>
+ </Filter>
+ <Filter
+ Name="Resource Files"
+ Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav"
+ UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}"
+ >
+ </Filter>
+ </Files>
+ <Globals>
+ </Globals>
+</VisualStudioProject>
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