Break render.c down and move to geoptimiser and CrystFELImageView

These two functions will diverge in the future.  Also, this change
removes the last remaining dependency of libcrystfel on
Gdk/Gtk-anything.

1 files changed, 168 insertions, 2 deletions

diff --git a/src/crystfelimageview.c b/src/crystfelimageview.c
index 35636a73..7cb3f9b6 100644
--- a/src/crystfelimageview.c
+++ b/src/crystfelimageview.c
@@ -39,7 +39,6 @@
 
 #include <utils.h>
 #include <detgeom.h>
-#include <render.h>
 #include <colscale.h>
 
 #include "crystfelimageview.h"
@@ -68,7 +67,6 @@ G_DEFINE_TYPE_WITH_CODE(CrystFELImageView, crystfel_image_view,
                         G_IMPLEMENT_INTERFACE(GTK_TYPE_SCROLLABLE,
                                               scroll_interface_init))
 
-
 static void redraw(CrystFELImageView *iv)
 {
 	gint w, h;
@@ -676,6 +674,174 @@ static void detgeom_pixel_extents(struct detgeom *det,
 }
 
 
+static float *get_binned_panel(struct image *image, int binning,
+                               int pi, double *max, int *pw, int *ph)
+{
+	float *data;
+	int x, y;
+	int w, h;
+
+	struct detgeom_panel *p = &image->detgeom->panels[pi];
+
+	/* Some pixels might get discarded */
+	w = p->w / binning;
+	h = p->h / binning;
+	*pw = w;
+	*ph = h;
+
+	data = malloc(w*h*sizeof(float));
+
+	*max = 0.0;
+	for ( x=0; x<w; x++ ) {
+	for ( y=0; y<h; y++ ) {
+
+		double total;
+		size_t xb, yb;
+		int bad = 0;
+		double val;
+
+		total = 0;
+		for ( xb=0; xb<binning; xb++ ) {
+		for ( yb=0; yb<binning; yb++ ) {
+
+			double v;
+			int fs, ss;
+
+			fs = binning*x+xb;
+			ss = binning*y+yb;
+			v = image->dp[pi][fs+ss*p->w];
+			total += v;
+
+			if ( (image->bad != NULL)
+			  && (image->bad[pi][fs+ss*p->w]) ) bad = 1;
+
+		}
+		}
+
+		val = total / ((double)binning * (double)binning);
+
+		if ( bad ) {
+			data[x+w*y] = -INFINITY;
+		} else {
+			data[x+w*y] = val;
+			if ( val > *max ) *max = val;
+		}
+
+	}
+	}
+
+	return data;
+}
+
+
+static void render_free_data(guchar *data, gpointer p)
+{
+	free(data);
+}
+
+
+static GdkPixbuf *render_panel(float *hdr, int scale, double max, int w, int h)
+{
+	guchar *data;
+	int x, y;
+
+	/* Rendered (colourful) version */
+	data = malloc(3*w*h);
+	if ( data == NULL ) return NULL;
+
+	/* 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];
+
+		if ( val > -INFINITY ) {
+
+			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;
+
+		} else {
+
+			data[3*( x+w*y )+0] = 30;
+			data[3*( x+w*y )+1] = 20;
+			data[3*( x+w*y )+2] = 0;
+
+		}
+
+	}
+	}
+
+	/* 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;
+	GdkPixbuf **pixbufs;
+	float **hdrs;
+	double max;
+	int *ws, *hs;
+
+	np = image->detgeom->n_panels;
+
+	hdrs = calloc(np, sizeof(float *));
+	ws = calloc(np, sizeof(int));
+	hs = calloc(np, sizeof(int));
+	if ( (hdrs == NULL) || (ws == NULL) || (hs == NULL) ) {
+		*n_pixbufs = 0;
+		return NULL;
+	}
+
+	/* Find overall max value for whole image */
+	max = 0.0;
+	for ( i=0; i<np; i++ ) {
+		double this_max = 0.0;
+		hdrs[i] = get_binned_panel(image, binning, i, &this_max,
+		                           &ws[i], &hs[i]);
+		if ( this_max > max ) max = this_max;
+	}
+
+	max /= boost;
+	if ( max <= 6 ) { max = 10; }
+
+	pixbufs = calloc(np, sizeof(GdkPixbuf*));
+	if ( pixbufs == NULL ) {
+		*n_pixbufs = 0;
+		return NULL;
+	}
+
+	for ( i=0; i<np; i++ ) {
+		pixbufs[i] = render_panel(hdrs[i], scale, max, ws[i], hs[i]);
+		free(hdrs[i]);
+	}
+
+	free(hdrs);
+	free(ws);
+	free(hs);
+	*n_pixbufs = np;
+
+	return pixbufs;
+}
+
+
 static int reload_image(CrystFELImageView *iv)
 {
 	if ( iv->dtempl == NULL ) return 0;