Re: [Gegl-developer] having trouble with gegl_node_to_xml
Am 28.08.2011 12:40, schrieb Jon Nordby:
On 28 August 2011 10:34, Joerg Beyer j.be...@web.de wrote:
hello,
I am having trouble to save gegl operations to repeat them later. I
think, that gegl_node_to_xml is the operation I am looking for, but this
can be wrong.
I wrote this small program:
#include stdio.h
#include gegl.h
gint
main (gint argc,
gchar **argv)
{
GeglNode *gegl, *gn_load, *gn_save, *gn_op;
gchar* xmltext;
g_thread_init (NULL);
gegl_init (argc, argv);
gegl = gegl_node_new ();
gn_load = gegl_node_new_child(gegl, operation, gegl:load,
path, bsp-900x600.jpg, NULL);
gn_save = gegl_node_new_child(gegl, operation, gegl:jpg-save,
path, out.jpg, NULL);
gn_op = gegl_node_new_child(gegl, operation,
gegl:unsharp-mask, std-dev, 1.2, scale, 8.0, NULL);
gegl_node_link_many (gn_load, gn_op, gn_save, NULL);
gegl_node_process (gn_save);
gegl_node_to_xml(gegl, xmltext);
printf(xmltext: %s\n, xmltext);
You probably want to do xmltext = gegl_node_to_xml(gegl, pwd); or
similar. Where pwd is the current working directory. See the
documentation at http://gegl.org/api.html#gegl_node_to_xml
when I change it this way:
xmltext = gegl_node_to_xml(gegl, /home/joerg/src/geglex);
printf(xmltext: %s\n, xmltext);
then I get only an empty node as output:
xmltext: ?xml version='1.0' encoding='UTF-8'?
gegl
/gegl
is this the expected output? I thought, that the node named gegl would
contain the other nodes (gn_load, gn_op and gn_save) but I am new to
gegl and may be wrong. I tried to print the complete transformation to xml.
What would give the entire tree of the operations?
Joerg
g_object_unref (gegl);
gegl_exit ();
return 0;
}
These are the library version ldd told me:
linux-gate.so.1 = (0xb78a1000)
libgegl-0.1.so.0 = /usr/lib/libgegl-0.1.so.0 (0xb782c000)
libc.so.6 = /lib/i386-linux-gnu/libc.so.6 (0xb76cb000)
libgobject-2.0.so.0 = /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
(0xb7683000)
libgthread-2.0.so.0 = /usr/lib/i386-linux-gnu/libgthread-2.0.so.0
(0xb767e000)
libgio-2.0.so.0 = /usr/lib/i386-linux-gnu/libgio-2.0.so.0 (0xb757b000)
libgmodule-2.0.so.0 = /usr/lib/i386-linux-gnu/libgmodule-2.0.so.0
(0xb7577000)
librt.so.1 = /lib/i386-linux-gnu/librt.so.1 (0xb756e000)
libglib-2.0.so.0 = /lib/i386-linux-gnu/libglib-2.0.so.0 (0xb7496000)
libbabl-0.1.so.0 = /usr/local/lib/libbabl-0.1.so.0 (0xb7448000)
libm.so.6 = /lib/i386-linux-gnu/libm.so.6 (0xb7422000)
libpthread.so.0 = /lib/i386-linux-gnu/libpthread.so.0 (0xb7409000)
/lib/ld-linux.so.2 (0xb78a2000)
libresolv.so.2 = /lib/i386-linux-gnu/libresolv.so.2 (0xb73f4000)
libz.so.1 = /lib/i386-linux-gnu/libz.so.1 (0xb73de000)
libselinux.so.1 = /lib/i386-linux-gnu/libselinux.so.1 (0xb73c3000)
libdl.so.2 = /lib/i386-linux-gnu/libdl.so.2 (0xb73bf000)
libpcre.so.3 = /lib/i386-linux-gnu/libpcre.so.3 (0xb738)
And I hoped, that xmltext would be string, containing a xml tree for
this little gegl operation. unfortunally all I got where a handful of
binary bytes - not the xml text (somthing like gegl/gegl) I
hoped for.
Any hints for me?
thanks in advance
Joerg
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Re: [Gegl-developer] having trouble with gegl_node_to_xml
On 28 August 2011 13:36, Joerg Beyer j.be...@web.de wrote:
Am 28.08.2011 12:40, schrieb Jon Nordby:
On 28 August 2011 10:34, Joerg Beyer j.be...@web.de wrote:
hello,
I am having trouble to save gegl operations to repeat them later. I
think, that gegl_node_to_xml is the operation I am looking for, but this
can be wrong.
I wrote this small program:
#include stdio.h
#include gegl.h
gint
main (gint argc,
gchar **argv)
{
GeglNode *gegl, *gn_load, *gn_save, *gn_op;
gchar* xmltext;
g_thread_init (NULL);
gegl_init (argc, argv);
gegl = gegl_node_new ();
gn_load = gegl_node_new_child(gegl, operation, gegl:load,
path, bsp-900x600.jpg, NULL);
gn_save = gegl_node_new_child(gegl, operation, gegl:jpg-save,
path, out.jpg, NULL);
gn_op = gegl_node_new_child(gegl, operation,
gegl:unsharp-mask, std-dev, 1.2, scale, 8.0, NULL);
gegl_node_link_many (gn_load, gn_op, gn_save, NULL);
gegl_node_process (gn_save);
gegl_node_to_xml(gegl, xmltext);
printf(xmltext: %s\n, xmltext);
You probably want to do xmltext = gegl_node_to_xml(gegl, pwd); or
similar. Where pwd is the current working directory. See the
documentation at http://gegl.org/api.html#gegl_node_to_xml
when I change it this way:
xmltext = gegl_node_to_xml(gegl, /home/joerg/src/geglex);
printf(xmltext: %s\n, xmltext);
then I get only an empty node as output:
xmltext: ?xml version='1.0' encoding='UTF-8'?
gegl
/gegl
is this the expected output? I thought, that the node named gegl would
contain the other nodes (gn_load, gn_op and gn_save) but I am new to
gegl and may be wrong. I tried to print the complete transformation to xml.
What would give the entire tree of the operations?
I don't think you read the documentation I linked you ;)
To export a gegl graph, connect the internal output node to an output
proxy (see gegl_node_get_output_proxy.) and use the proxy node as the
basis for the serialization.
Joerg
g_object_unref (gegl);
gegl_exit ();
return 0;
}
These are the library version ldd told me:
linux-gate.so.1 = (0xb78a1000)
libgegl-0.1.so.0 = /usr/lib/libgegl-0.1.so.0 (0xb782c000)
libc.so.6 = /lib/i386-linux-gnu/libc.so.6 (0xb76cb000)
libgobject-2.0.so.0 = /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
(0xb7683000)
libgthread-2.0.so.0 = /usr/lib/i386-linux-gnu/libgthread-2.0.so.0
(0xb767e000)
libgio-2.0.so.0 = /usr/lib/i386-linux-gnu/libgio-2.0.so.0 (0xb757b000)
libgmodule-2.0.so.0 = /usr/lib/i386-linux-gnu/libgmodule-2.0.so.0
(0xb7577000)
librt.so.1 = /lib/i386-linux-gnu/librt.so.1 (0xb756e000)
libglib-2.0.so.0 = /lib/i386-linux-gnu/libglib-2.0.so.0 (0xb7496000)
libbabl-0.1.so.0 = /usr/local/lib/libbabl-0.1.so.0 (0xb7448000)
libm.so.6 = /lib/i386-linux-gnu/libm.so.6 (0xb7422000)
libpthread.so.0 = /lib/i386-linux-gnu/libpthread.so.0 (0xb7409000)
/lib/ld-linux.so.2 (0xb78a2000)
libresolv.so.2 = /lib/i386-linux-gnu/libresolv.so.2 (0xb73f4000)
libz.so.1 = /lib/i386-linux-gnu/libz.so.1 (0xb73de000)
libselinux.so.1 = /lib/i386-linux-gnu/libselinux.so.1 (0xb73c3000)
libdl.so.2 = /lib/i386-linux-gnu/libdl.so.2 (0xb73bf000)
libpcre.so.3 = /lib/i386-linux-gnu/libpcre.so.3 (0xb738)
And I hoped, that xmltext would be string, containing a xml tree for
this little gegl operation. unfortunally all I got where a handful of
binary bytes - not the xml text (somthing like gegl/gegl) I
hoped for.
Any hints for me?
thanks in advance
Joerg
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--
Jon Nordby - www.jonnor.com
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Re: [Gegl-developer] having trouble with gegl_node_to_xml
Am 28.08.2011 13:59, schrieb Jon Nordby:
On 28 August 2011 13:36, Joerg Beyer j.be...@web.de wrote:
Am 28.08.2011 12:40, schrieb Jon Nordby:
On 28 August 2011 10:34, Joerg Beyer j.be...@web.de wrote:
hello,
I am having trouble to save gegl operations to repeat them later. I
think, that gegl_node_to_xml is the operation I am looking for, but this
can be wrong.
I wrote this small program:
#include stdio.h
#include gegl.h
gint
main (gint argc,
gchar **argv)
{
GeglNode *gegl, *gn_load, *gn_save, *gn_op;
gchar* xmltext;
g_thread_init (NULL);
gegl_init (argc, argv);
gegl = gegl_node_new ();
gn_load = gegl_node_new_child(gegl, operation, gegl:load,
path, bsp-900x600.jpg, NULL);
gn_save = gegl_node_new_child(gegl, operation, gegl:jpg-save,
path, out.jpg, NULL);
gn_op = gegl_node_new_child(gegl, operation,
gegl:unsharp-mask, std-dev, 1.2, scale, 8.0, NULL);
gegl_node_link_many (gn_load, gn_op, gn_save, NULL);
gegl_node_process (gn_save);
gegl_node_to_xml(gegl, xmltext);
printf(xmltext: %s\n, xmltext);
You probably want to do xmltext = gegl_node_to_xml(gegl, pwd); or
similar. Where pwd is the current working directory. See the
documentation at http://gegl.org/api.html#gegl_node_to_xml
when I change it this way:
xmltext = gegl_node_to_xml(gegl, /home/joerg/src/geglex);
printf(xmltext: %s\n, xmltext);
then I get only an empty node as output:
xmltext: ?xml version='1.0' encoding='UTF-8'?
gegl
/gegl
is this the expected output? I thought, that the node named gegl would
contain the other nodes (gn_load, gn_op and gn_save) but I am new to
gegl and may be wrong. I tried to print the complete transformation to xml.
What would give the entire tree of the operations?
I don't think you read the documentation I linked you ;)
To export a gegl graph, connect the internal output node to an output
proxy (see gegl_node_get_output_proxy.) and use the proxy node as the
basis for the serialization.
thanks for your answers.
well, I read the API docs of this functions, but since I am not familiar
with the conventions used (what is a pad, how are the nodes connected -
I saw the glossary...) I have my difficulties to understand them. I also
found no simple example - gegl_node_to_xml appears 19 times in the gegl
sources, but is used only in gegl (and I am not sure how) and the in
bindings. A google search for other source code snippets does not show
other use cases.
Are there small programs, smaller and simpler than gimp, that use gegl?
I would try and read them for better understanding.
yours
Joerg
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