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#include <stdlib.h>
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#include <gegl.h>
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#include <glib/gprintf.h>
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#include <sys/time.h>
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#include <time.h>
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gint
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main (gint argc,
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gchar **argv)
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{
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GeglNode *gegl; /* the gegl graph we're using as a node factor */
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GeglBuffer *buffer;
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GeglNode *display,
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*text,
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*layer,
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*crop,
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*shift,
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*blank;
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if (argv[1]==NULL)
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{
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g_print ("\nUsage: %s <GeglBuffer>\n"
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"\n"
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"Continously writes a timestamp to 0,0 in the buffer\n", argv[0]);
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exit (-1);
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}
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gegl_init (&argc, &argv); /* initialize the GEGL library */
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gegl = gegl_node_new ();
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buffer = gegl_buffer_open (argv[1]);
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blank = gegl_node_new_child (gegl,
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"operation", "gegl:color",
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"value", gegl_color_new ("rgba(0.0,0.0,0.0,0.4)"),
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NULL);
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crop = gegl_node_new_child (gegl,
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"operation", "gegl:crop",
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"x", 0.0,
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"y", 0.0,
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"width", 260.0,
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"height", 22.0,
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NULL);
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layer = gegl_node_new_child (gegl,
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"operation", "gegl:layer",
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NULL);
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shift = gegl_node_new_child (gegl,
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"operation", "gegl:translate",
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"x", 0.0,
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"y", 0.0,
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NULL);
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text = gegl_node_new_child (gegl,
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"operation", "gegl:text",
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"size", 20.0,
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"color", gegl_color_new ("rgb(1.0,1.0,1.0)"),
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NULL);
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display = gegl_node_new_child (gegl,
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"operation", "gegl:write-buffer",
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"buffer", buffer,
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NULL);
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gegl_node_link_many (blank, crop, layer, shift, display, NULL);
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gegl_node_connect_to (text, "output", layer, "aux");
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/* request that the save node is processed, all dependencies will
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* be processed as well
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*/
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{
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gint frame;
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gint frames = 1024;
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for (frame=0; frame
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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gegl_node_set (text, "string", ctime((void*)&tv), NULL);
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gegl_node_process (display);
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g_usleep (1000000);
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}
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}
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/* free resources globally used by GEGL */
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gegl_exit ();
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return 0;
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}
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