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lib: use pixman for imaging utils

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pixman is very lightweight library for pixel manipulation, and it
has no dependencies except glibc, so using it instead of gdkpixbuf/imagemagick
makes list for libfprint dependencies a bit shorter.
This commit is contained in:
Vasily Khoruzhick
2013-05-24 12:34:45 +03:00
parent a6101026d2
commit 948ab02d1a
4 changed files with 34 additions and 143 deletions
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15
libfprint/Makefile.am
View File

@@ -46,8 +46,7 @@ EXTRA_DIST = \
drivers/aes3k.h \
drivers/driver_ids.h \
aeslib.c aeslib.h \
imagemagick.c \
gdkpixbuf.c \
pixman.c \
60-fprint-autosuspend.rules
DRIVER_SRC =
@@ -95,7 +94,7 @@ libfprint_la_LDFLAGS = -version-info @lt_major@:@lt_revision@:@lt_age@
libfprint_la_LIBADD = -lm $(LIBUSB_LIBS) $(GLIB_LIBS) $(CRYPTO_LIBS)
fprint_list_udev_rules_SOURCES = fprint-list-udev-rules.c
fprint_list_udev_rules_CFLAGS = -fvisibility=hidden -I$(srcdir)/nbis/include $(LIBUSB_CFLAGS) $(GLIB_CFLAGS) $(IMAGEMAGICK_CFLAGS) $(CRYPTO_CFLAGS) $(AM_CFLAGS)
fprint_list_udev_rules_CFLAGS = -fvisibility=hidden -I$(srcdir)/nbis/include $(LIBUSB_CFLAGS) $(GLIB_CFLAGS) $(CRYPTO_CFLAGS) $(AM_CFLAGS)
fprint_list_udev_rules_LDADD = $(builddir)/libfprint.la $(GLIB_LIBS)
udev_rules_DATA = 60-fprint-autosuspend.rules
@@ -177,14 +176,8 @@ if ENABLE_ETES603
DRIVER_SRC += $(ETES603_SRC)
endif
if REQUIRE_IMAGEMAGICK
OTHER_SRC += imagemagick.c
libfprint_la_CFLAGS += $(IMAGING_CFLAGS)
libfprint_la_LIBADD += $(IMAGING_LIBS)
endif
if REQUIRE_GDKPIXBUF
OTHER_SRC += gdkpixbuf.c
if REQUIRE_PIXMAN
OTHER_SRC += pixman.c
libfprint_la_CFLAGS += $(IMAGING_CFLAGS)
libfprint_la_LIBADD += $(IMAGING_LIBS)
endif

88
libfprint/gdkpixbuf.c
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@@ -1,88 +0,0 @@
/*
* Imaging utility functions for libfprint
* Copyright (C) 2007-2008 Daniel Drake <dsd@gentoo.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <errno.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "fp_internal.h"
struct fp_img *fpi_im_resize(struct fp_img *img, unsigned int w_factor, unsigned int h_factor)
{
int new_width = img->width * w_factor;
int new_height = img->height * h_factor;
GdkPixbuf *orig, *resized;
struct fp_img *newimg;
guchar *pixels;
guint y;
int rowstride;
g_type_init ();
/* It is possible to implement resizing using a simple algorithm, however
* we use gdk-pixbuf because it applies some kind of smoothing to the
* result, which improves matching performances in my experiments. */
/* Create the original pixbuf, and fill it in from the grayscale data */
orig = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
FALSE,
8,
img->width,
img->height);
rowstride = gdk_pixbuf_get_rowstride (orig);
pixels = gdk_pixbuf_get_pixels (orig);
for (y = 0; y < img->height; y++) {
guint x;
for (x = 0; x < img->width; x++) {
guchar *p, *r;
p = pixels + y * rowstride + x * 3;
r = img->data + y * img->width + x;
p[0] = r[0];
p[1] = r[0];
p[2] = r[0];
}
}
/* Resize the pixbuf, and create the new fp_img */
resized = gdk_pixbuf_scale_simple (orig, new_width, new_height, GDK_INTERP_HYPER);
g_object_unref (orig);
newimg = fpi_img_new(new_width * new_height);
newimg->width = new_width;
newimg->height = new_height;
newimg->flags = img->flags;
rowstride = gdk_pixbuf_get_rowstride (resized);
pixels = gdk_pixbuf_get_pixels (resized);
for (y = 0; y < newimg->height; y++) {
guint x;
for (x = 0; x < newimg->width; x++) {
guchar *p, *r;
r = newimg->data + y * newimg->width + x;
p = pixels + y * rowstride + x * 3;
r[0] = p[0];
}
}
g_object_unref (resized);
return newimg;
}

50
libfprint/imagemagick.c → libfprint/pixman.c
View File

@@ -1,6 +1,7 @@
/*
* Imaging utility functions for libfprint
* Copyright (C) 2007-2008 Daniel Drake <dsd@gentoo.org>
* Copyright (C) 2013 Vasily Khoruzhick <anarsoul@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -17,50 +18,45 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <errno.h>
#include <magick/ImageMagick.h>
#include <pixman.h>
#include <string.h>
#include "fp_internal.h"
struct fp_img *fpi_im_resize(struct fp_img *img, unsigned int w_factor, unsigned int h_factor)
{
Image *mimg;
Image *resized;
ExceptionInfo exception;
MagickBooleanType ret;
int new_width = img->width * w_factor;
int new_height = img->height * h_factor;
pixman_image_t *orig, *resized;
pixman_transform_t transform;
struct fp_img *newimg;
/* It is possible to implement resizing using a simple algorithm, however
* we use ImageMagick because it applies some kind of smoothing to the
* result, which improves matching performances in my experiments. */
orig = pixman_image_create_bits(PIXMAN_a8, img->width, img->height, (uint32_t *)img->data, img->width);
resized = pixman_image_create_bits(PIXMAN_a8, new_width, new_height, NULL, new_width);
if (!IsMagickInstantiated())
InitializeMagick(NULL);
GetExceptionInfo(&exception);
mimg = ConstituteImage(img->width, img->height, "I", CharPixel, img->data,
&exception);
GetExceptionInfo(&exception);
resized = ResizeImage(mimg, new_width, new_height, 0, 1.0, &exception);
pixman_transform_init_identity(&transform);
pixman_transform_scale(NULL, &transform, pixman_int_to_fixed(w_factor), pixman_int_to_fixed(h_factor));
pixman_image_set_transform(orig, &transform);
pixman_image_set_filter(orig, PIXMAN_FILTER_BILINEAR, NULL, 0);
pixman_image_composite32(PIXMAN_OP_SRC,
orig, /* src */
NULL, /* mask */
resized, /* dst */
0, 0, /* src x y */
0, 0, /* mask x y */
0, 0, /* dst x y */
new_width, new_height /* width height */
);
newimg = fpi_img_new(new_width * new_height);
newimg->width = new_width;
newimg->height = new_height;
newimg->flags = img->flags;
GetExceptionInfo(&exception);
ret = ExportImagePixels(resized, 0, 0, new_width, new_height, "I",
CharPixel, newimg->data, &exception);
if (ret != MagickTrue) {
fp_err("export failed");
return NULL;
}
memcpy(newimg->data, pixman_image_get_data(resized), new_width * new_height);
DestroyImage(mimg);
DestroyImage(resized);
pixman_image_unref(orig);
pixman_image_unref(resized);
return newimg;
}