From d3ec66174fbfcb3780e106ca25134fd58a45506c Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Tue, 15 Nov 2011 17:19:47 +0100
Subject: Remove libcrystfel dependency on GTK et al.

---
 src/dw-hdfsee.c     |   1 +
 src/hdfsee-render.c | 317 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/hdfsee-render.h |  37 ++++++
 3 files changed, 355 insertions(+)
 create mode 100644 src/hdfsee-render.c
 create mode 100644 src/hdfsee-render.h

(limited to 'src')

diff --git a/src/dw-hdfsee.c b/src/dw-hdfsee.c
index 8f42b2d0..54c73711 100644
--- a/src/dw-hdfsee.c
+++ b/src/dw-hdfsee.c
@@ -22,6 +22,7 @@
 #include <gdk-pixbuf/gdk-pixbuf.h>
 
 #include "dw-hdfsee.h"
+#include "hdfsee-render.h"
 #include "render.h"
 #include "hdf5-file.h"
 #include "hdfsee.h"
diff --git a/src/hdfsee-render.c b/src/hdfsee-render.c
new file mode 100644
index 00000000..bb29638a
--- /dev/null
+++ b/src/hdfsee-render.c
@@ -0,0 +1,317 @@
+/*
+ * hdfsee-render.c
+ *
+ * Rendering bits for hdfsee
+ *
+ * (c) 2006-2011 Thomas White <taw@physics.org>
+ *
+ * Part of CrystFEL - crystallography with a FEL
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef HAVE_GTK
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+#include <stdlib.h>
+#include <math.h>
+#include <stdint.h>
+
+#ifdef HAVE_TIFF
+#include <tiffio.h>
+#endif
+
+#include <render.h>
+#include <image.h>
+
+static float *get_binned_panel(struct image *image, int binning,
+                               int min_fs, int max_fs, int min_ss, int max_ss)
+{
+	float *data;
+	int x, y;
+	int w, h;
+	int fw;
+	float *in;
+
+	fw = image->width;
+	in = image->data;
+
+	/* Some pixels might get discarded */
+	w = (max_fs - min_fs + 1) / binning;
+	h = (max_ss - min_ss + 1) / binning;
+
+	data = malloc(w*h*sizeof(float));
+
+	for ( x=0; x<w; x++ ) {
+	for ( y=0; y<h; y++ ) {
+
+		double total;
+		size_t xb, yb;
+
+		total = 0;
+		for ( xb=0; xb<binning; xb++ ) {
+		for ( yb=0; yb<binning; yb++ ) {
+
+			double v;
+			v = in[binning*x+xb+min_fs + (binning*y+yb+min_ss)*fw];
+			total += v;
+
+		}
+		}
+
+		data[x+w*y] = total / ((double)binning * (double)binning);
+
+	}
+	}
+
+	return data;
+}
+
+
+/* NB This function is shared between render_get_image() and
+ * render_get_colour_scale() */
+static void render_free_data(guchar *data, gpointer p)
+{
+	free(data);
+}
+
+
+static GdkPixbuf *render_panel(struct image *image,
+                               int binning, int scale, double boost,
+                               int min_fs, int max_fs, int min_ss, int max_ss)
+{
+	int w, h;
+	guchar *data;
+	float *hdr;
+	int x, y;
+	double max;
+	int pw, ph;
+	int i;
+
+	/* Calculate panel width and height
+	 * (add one because min and max are inclusive) */
+	pw = max_fs - min_fs + 1;
+	ph = max_ss - min_ss + 1;
+	w = pw / binning;
+	h = ph / binning;
+
+	/* High dynamic range version */
+	max = 0.0;
+	for ( i=0; i<image->width*image->height; i++ ) {
+		if ( image->data[i] > max ) max = image->data[i];
+	}
+	hdr = get_binned_panel(image, binning, min_fs, max_fs, min_ss, max_ss);
+	if ( hdr == NULL ) return NULL;
+
+	/* Rendered (colourful) version */
+	data = malloc(3*w*h);
+	if ( data == NULL ) {
+		free(hdr);
+		return NULL;
+	}
+
+	max /= boost;
+	if ( max <= 6 ) { max = 10; }
+	/* These x,y coordinates are measured relative to the bottom-left
+	 * corner */
+	for ( y=0; y<h; y++ ) {
+	for ( x=0; x<w; x++ ) {
+
+		double val;
+		double r, g, b;
+
+		val = hdr[x+w*y];
+		render_scale(val, max, scale, &r, &g, &b);
+
+		/* Stuff inside square brackets makes this pixel go to
+		 * the expected location in the pixbuf (which measures
+		 * from the top-left corner */
+		data[3*( x+w*y )+0] = 255*r;
+		data[3*( x+w*y )+1] = 255*g;
+		data[3*( x+w*y )+2] = 255*b;
+
+	}
+	}
+
+	/* Finished with this */
+	free(hdr);
+
+	/* Create the pixbuf from the 8-bit display data */
+	return gdk_pixbuf_new_from_data(data, GDK_COLORSPACE_RGB, FALSE, 8,
+					w, h, w*3, render_free_data, NULL);
+
+}
+
+
+/* Render an image into multiple pixbufs according to geometry */
+GdkPixbuf **render_panels(struct image *image,
+                          int binning, int scale, double boost,
+                          int *n_pixbufs)
+{
+	int i;
+	int np = image->det->n_panels;
+	GdkPixbuf **pixbufs;
+
+	pixbufs = calloc(np, sizeof(GdkPixbuf*));
+	if ( pixbufs == NULL ) {
+		*n_pixbufs = 0;
+		return NULL;
+	}
+
+	for ( i=0; i<np; i++ ) {
+
+		pixbufs[i] = render_panel(image, binning, scale, boost,
+		                          image->det->panels[i].min_fs,
+		                          image->det->panels[i].max_fs,
+		                          image->det->panels[i].min_ss,
+		                          image->det->panels[i].max_ss);
+
+	}
+
+	*n_pixbufs = np;
+
+	return pixbufs;
+}
+
+
+GdkPixbuf *render_get_colour_scale(size_t w, size_t h, int scale)
+{
+	guchar *data;
+	size_t x, y;
+	int max;
+
+	data = malloc(3*w*h);
+	if ( data == NULL ) return NULL;
+
+	max = h;
+
+	for ( y=0; y<h; y++ ) {
+
+		double r, g, b;
+		int val;
+
+		val = y;
+
+		render_scale(val, max, scale, &r, &g, &b);
+
+		data[3*( 0+w*(h-1-y) )+0] = 0;
+		data[3*( 0+w*(h-1-y) )+1] = 0;
+		data[3*( 0+w*(h-1-y) )+2] = 0;
+		for ( x=1; x<w; x++ ) {
+			data[3*( x+w*(h-1-y) )+0] = 255*r;
+			data[3*( x+w*(h-1-y) )+1] = 255*g;
+			data[3*( x+w*(h-1-y) )+2] = 255*b;
+		}
+
+	}
+
+	return gdk_pixbuf_new_from_data(data, GDK_COLORSPACE_RGB, FALSE, 8,
+					w, h, w*3, render_free_data, NULL);
+}
+
+
+int render_tiff_fp(struct image *image, const char *filename)
+{
+#ifdef HAVE_TIFF
+	TIFF *th;
+	float *line;
+	int y;
+
+	th = TIFFOpen(filename, "w");
+	if ( th == NULL ) return 1;
+
+	TIFFSetField(th, TIFFTAG_IMAGEWIDTH, image->width);
+	TIFFSetField(th, TIFFTAG_IMAGELENGTH, image->height);
+	TIFFSetField(th, TIFFTAG_SAMPLESPERPIXEL, 1);
+	TIFFSetField(th, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_IEEEFP);
+	TIFFSetField(th, TIFFTAG_BITSPERSAMPLE, 32);
+	TIFFSetField(th, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
+	TIFFSetField(th, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
+	TIFFSetField(th, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
+	TIFFSetField(th, TIFFTAG_ROWSPERSTRIP,
+	             TIFFDefaultStripSize(th, image->width*4));
+
+	line = _TIFFmalloc(TIFFScanlineSize(th));
+	for ( y=0; y<image->height; y++ ) {
+		memcpy(line, &image->data[(image->height-1-y)*image->width],
+		       image->width*4);
+		TIFFWriteScanline(th, line, y, 0);
+	}
+	_TIFFfree(line);
+
+	TIFFClose(th);
+
+#else
+	STATUS("No TIFF support.\n");
+#endif
+	return 0;
+}
+
+
+int render_tiff_int16(struct image *image, const char *filename, double boost)
+{
+#ifdef HAVE_TIFF
+	TIFF *th;
+	int16_t *line;
+	int x, y;
+	double max;
+
+	th = TIFFOpen(filename, "w");
+	if ( th == NULL ) return 1;
+
+	TIFFSetField(th, TIFFTAG_IMAGEWIDTH, image->width);
+	TIFFSetField(th, TIFFTAG_IMAGELENGTH, image->height);
+	TIFFSetField(th, TIFFTAG_SAMPLESPERPIXEL, 1);
+	TIFFSetField(th, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_INT); /* (signed) */
+	TIFFSetField(th, TIFFTAG_BITSPERSAMPLE, 16);
+	TIFFSetField(th, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
+	TIFFSetField(th, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
+	TIFFSetField(th, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
+	TIFFSetField(th, TIFFTAG_ROWSPERSTRIP,
+	             TIFFDefaultStripSize(th, image->width*4));
+
+	line = _TIFFmalloc(TIFFScanlineSize(th));
+	max = 0.0;
+	for ( y=0; y<image->height; y++ ) {
+	for ( x=0;x<image->width; x++ ) {
+		double val;
+		val = image->data[x+image->height*y];
+		if ( val > max ) max = val;
+	}
+	}
+	max /= 32767.0;
+
+	for ( y=0; y<image->height; y++ ) {
+		for ( x=0;x<image->width; x++ ) {
+
+			double val;
+
+			val = image->data[x+(image->height-1-y)*image->width];
+			val *= ((double)boost/max);
+
+			/* Clamp to 16-bit range,
+			 * and work round inability of most readers to deal
+			 * with signed integers. */
+			val += 1000.0;
+			if ( val > 32767.0 ) val = 32767.0;
+			if ( val < 0.0 ) val = 0.0;
+
+			line[x] = val;
+		}
+
+		TIFFWriteScanline(th, line, y, 0);
+	}
+	_TIFFfree(line);
+
+	TIFFClose(th);
+#else
+	STATUS("No TIFF support.\n");
+#endif
+	return 0;
+}
+
+#endif /* HAVE_GTK */
diff --git a/src/hdfsee-render.h b/src/hdfsee-render.h
new file mode 100644
index 00000000..6202feb5
--- /dev/null
+++ b/src/hdfsee-render.h
@@ -0,0 +1,37 @@
+/*
+ * hdfsee-render.h
+ *
+ * Rendering bits for hdfsee
+ *
+ * (c) 2006-2011 Thomas White <taw@physics.org>
+ *
+ * Part of CrystFEL - crystallography with a FEL
+ *
+ */
+
+#ifndef HDFSEE_RENDER_H
+#define HDFSEE_RENDER_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+
+#ifdef HAVE_GTK
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+extern GdkPixbuf **render_panels(struct image *image,
+                                 int binning, int scale, double boost,
+                                 int *n_pixbufs);
+
+extern GdkPixbuf *render_get_colour_scale(size_t w, size_t h, int scale);
+
+extern int render_tiff_fp(struct image *image, const char *filename);
+extern int render_tiff_int16(struct image *image, const char *filename,
+                             double boost);
+
+#endif /* HAVE_GTK */
+
+
+#endif	/* HDFSEE_RENDER_H */
-- 
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