Import Ghostscript 9.54ghostscript-9.54

Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>

1 files changed, 185 insertions, 0 deletions

diff --git a/leptonica/prog/shear2_reg.c b/leptonica/prog/shear2_reg.c
new file mode 100644
index 00000000..1922e59e
--- /dev/null
+++ b/leptonica/prog/shear2_reg.c
@@ -0,0 +1,185 @@
+/*====================================================================*
+ -  Copyright (C) 2001 Leptonica.  All rights reserved.
+ -
+ -  Redistribution and use in source and binary forms, with or without
+ -  modification, are permitted provided that the following conditions
+ -  are met:
+ -  1. Redistributions of source code must retain the above copyright
+ -     notice, this list of conditions and the following disclaimer.
+ -  2. Redistributions in binary form must reproduce the above
+ -     copyright notice, this list of conditions and the following
+ -     disclaimer in the documentation and/or other materials
+ -     provided with the distribution.
+ -
+ -  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ -  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ -  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ -  A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ANY
+ -  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ -  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ -  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ -  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ -  OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ -  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ -  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *====================================================================*/
+
+/*
+ *   shear2_reg.c
+ *
+ *    Regression test for quadratic shear, both sampled and interpolated.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config_auto.h>
+#endif  /* HAVE_CONFIG_H */
+
+#include "allheaders.h"
+
+void PixSave(PIX **ppixs, PIXA *pixa, l_int32 newrow,
+             L_BMF *bmf, const char *textstr);
+
+
+l_int32 main(int    argc,
+             char **argv)
+{
+L_BMF        *bmf;
+PIX          *pixs1, *pixs2, *pixg, *pixt, *pixd;
+PIXA         *pixa;
+L_REGPARAMS  *rp;
+
+#if !defined(HAVE_LIBPNG)
+    L_ERROR("This test requires libpng to run.\n", "shear2_reg");
+    exit(77);
+#endif
+
+    if (regTestSetup(argc, argv, &rp))
+        return 1;
+
+    bmf = bmfCreate("./fonts", 8);
+    pixs1 = pixCreate(301, 301, 32);
+    pixs2 = pixCreate(601, 601, 32);
+    pixSetAll(pixs1);
+    pixSetAll(pixs2);
+    pixRenderLineArb(pixs1, 0, 20, 300, 20, 5, 0, 0, 255);
+    pixRenderLineArb(pixs1, 0, 70, 300, 70, 5, 0, 255, 0);
+    pixRenderLineArb(pixs1, 0, 120, 300, 120, 5, 0, 255, 255);
+    pixRenderLineArb(pixs1, 0, 170, 300, 170, 5, 255, 0, 0);
+    pixRenderLineArb(pixs1, 0, 220, 300, 220, 5, 255, 0, 255);
+    pixRenderLineArb(pixs1, 0, 270, 300, 270, 5, 255, 255, 0);
+    pixRenderLineArb(pixs2, 0, 20, 300, 20, 5, 0, 0, 255);
+    pixRenderLineArb(pixs2, 0, 70, 300, 70, 5, 0, 255, 0);
+    pixRenderLineArb(pixs2, 0, 120, 300, 120, 5, 0, 255, 255);
+    pixRenderLineArb(pixs2, 0, 170, 300, 170, 5, 255, 0, 0);
+    pixRenderLineArb(pixs2, 0, 220, 300, 220, 5, 255, 0, 255);
+    pixRenderLineArb(pixs2, 0, 270, 300, 270, 5, 255, 255, 0);
+
+        /* Color, small pix */
+    pixa = pixaCreate(0);
+    pixt = pixQuadraticVShear(pixs1, L_WARP_TO_LEFT,
+                                   60, -20, L_SAMPLED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 1, bmf, "sampled-left");
+    pixt = pixQuadraticVShear(pixs1, L_WARP_TO_RIGHT,
+                                   60, -20, L_SAMPLED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 0, bmf, "sampled-right");
+    pixt = pixQuadraticVShear(pixs1, L_WARP_TO_LEFT,
+                                   60, -20, L_INTERPOLATED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 1, bmf, "interpolated-left");
+    pixt = pixQuadraticVShear(pixs1, L_WARP_TO_RIGHT,
+                                   60, -20, L_INTERPOLATED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 0, bmf, "interpolated-right");
+    pixd = pixaDisplayTiledInColumns(pixa, 2, 1.0, 20, 0);
+    regTestWritePixAndCheck(rp, pixd, IFF_PNG);
+    pixDisplayWithTitle(pixd, 50, 50, NULL, rp->display);
+    pixDestroy(&pixd);
+    pixaDestroy(&pixa);
+
+        /* Grayscale, small pix */
+    pixg = pixConvertTo8(pixs1, 0);
+    pixa = pixaCreate(0);
+    pixt = pixQuadraticVShear(pixg, L_WARP_TO_LEFT,
+                                   60, -20, L_SAMPLED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 1, bmf, "sampled-left");
+    pixt = pixQuadraticVShear(pixg, L_WARP_TO_RIGHT,
+                                   60, -20, L_SAMPLED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 0, bmf, "sampled-right");
+    pixt = pixQuadraticVShear(pixg, L_WARP_TO_LEFT,
+                                   60, -20, L_INTERPOLATED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 1, bmf, "interpolated-left");
+    pixt = pixQuadraticVShear(pixg, L_WARP_TO_RIGHT,
+                                   60, -20, L_INTERPOLATED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 0, bmf, "interpolated-right");
+    pixd = pixaDisplayTiledInColumns(pixa, 2, 1.0, 20, 0);
+    regTestWritePixAndCheck(rp, pixd, IFF_PNG);
+    pixDisplayWithTitle(pixd, 250, 50, NULL, rp->display);
+    pixDestroy(&pixg);
+    pixDestroy(&pixd);
+    pixaDestroy(&pixa);
+
+        /* Color, larger pix */
+    pixa = pixaCreate(0);
+    pixt = pixQuadraticVShear(pixs2, L_WARP_TO_LEFT,
+                              120, -40, L_SAMPLED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 1, bmf, "sampled-left");
+    pixt = pixQuadraticVShear(pixs2, L_WARP_TO_RIGHT,
+                              120, -40, L_SAMPLED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 0, bmf, "sampled-right");
+    pixt = pixQuadraticVShear(pixs2, L_WARP_TO_LEFT,
+                              120, -40, L_INTERPOLATED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 1, bmf, "interpolated-left");
+    pixt = pixQuadraticVShear(pixs2, L_WARP_TO_RIGHT,
+                              120, -40, L_INTERPOLATED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 0, bmf, "interpolated-right");
+    pixd = pixaDisplayTiledInColumns(pixa, 2, 1.0, 20, 0);
+    regTestWritePixAndCheck(rp, pixd, IFF_PNG);
+    pixDisplayWithTitle(pixd, 550, 50, NULL, rp->display);
+    pixDestroy(&pixd);
+    pixaDestroy(&pixa);
+
+        /* Grayscale, larger pix */
+    pixg = pixConvertTo8(pixs2, 0);
+    pixa = pixaCreate(0);
+    pixt = pixQuadraticVShear(pixg, L_WARP_TO_LEFT,
+                              60, -20, L_SAMPLED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 1, bmf, "sampled-left");
+    pixt = pixQuadraticVShear(pixg, L_WARP_TO_RIGHT,
+                              60, -20, L_SAMPLED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 0, bmf, "sampled-right");
+    pixt = pixQuadraticVShear(pixg, L_WARP_TO_LEFT,
+                              60, -20, L_INTERPOLATED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 1, bmf, "interpolated-left");
+    pixt = pixQuadraticVShear(pixg, L_WARP_TO_RIGHT,
+                              60, -20, L_INTERPOLATED, L_BRING_IN_WHITE);
+    PixSave(&pixt, pixa, 0, bmf, "interpolated-right");
+    pixd = pixaDisplayTiledInColumns(pixa, 2, 1.0, 20, 0);
+    regTestWritePixAndCheck(rp, pixd, IFF_PNG);
+    pixDisplayWithTitle(pixd, 850, 50, NULL, rp->display);
+    pixDestroy(&pixg);
+    pixDestroy(&pixd);
+    pixaDestroy(&pixa);
+
+    pixDestroy(&pixs1);
+    pixDestroy(&pixs2);
+    bmfDestroy(&bmf);
+    return regTestCleanup(rp);
+}
+
+
+void
+PixSave(PIX        **ppixs,
+        PIXA        *pixa,
+        l_int32      newrow,
+        L_BMF       *bmf,
+        const char  *textstr)
+{
+PIX  *pix1, *pix2, *pix3;
+
+    pix1 = pixConvertTo32(*ppixs);
+    pix2 = pixAddBorder(pix1, 3, 0);
+    pix3 = pixAddSingleTextblock(pix2, bmf, textstr, 0xff000000, L_ADD_BELOW,
+                                 NULL);
+    pixaAddPix(pixa, pix3, L_INSERT);
+    pixDestroy(&pix1);
+    pixDestroy(&pix2);
+    pixDestroy(ppixs);
+}