From 25c3d29ed7701cadbb3813878f25b633a7cd7c2d Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Tue, 15 Nov 2011 13:59:17 +0100
Subject: Move indexing and rendering to libcrystfel

---
 libcrystfel/src/mosflm.c | 609 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 609 insertions(+)
 create mode 100644 libcrystfel/src/mosflm.c

(limited to 'libcrystfel/src/mosflm.c')

diff --git a/libcrystfel/src/mosflm.c b/libcrystfel/src/mosflm.c
new file mode 100644
index 00000000..5df5af21
--- /dev/null
+++ b/libcrystfel/src/mosflm.c
@@ -0,0 +1,609 @@
+/*
+ * mosflm.c
+ *
+ * Invoke the DPS auto-indexing algorithm through MOSFLM
+ *
+ * (c) 2010 Richard Kirian <rkirian@asu.edu>
+ * (c) 2006-2010 Thomas White <taw@physics.org>
+ *
+ * Part of CrystFEL - crystallography with a FEL
+ *
+ */
+
+/* TODO:
+ *
+ * Properly read the newmat file (don't use fscanf-- spaces between numers
+ *  are not guaranteed)
+ *
+ * "Success" is indicated by existence of NEWMAT file written by mosflm.
+ *  Better to interact with mosflm directly in order to somehow verify success.
+ *
+ * Investigate how these keywords affect mosflms behavior:
+ *
+ *  MOSAICITY
+ *  DISPERSION
+ *  DIVERGENCE
+ *  POLARISATION
+ *  POSTREF BEAM
+ *  POSTREF USEBEAM OFF
+ *  PREREFINE ON
+ *  EXTRA ON
+ *  POSTREF ON
+ *
+ *  These did not seem to affect the results by my (Rick's) experience, probably
+ *  because they are only used conjunction with image intensity data, but it's
+ *  worth another look at the documentation.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <assert.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#if HAVE_FORKPTY_LINUX
+#include <pty.h>
+#elif HAVE_FORKPTY_BSD
+#include <util.h>
+#endif
+
+
+#include "image.h"
+#include "mosflm.h"
+#include "utils.h"
+#include "peaks.h"
+
+
+#define MOSFLM_VERBOSE 0
+
+
+typedef enum {
+	MOSFLM_INPUT_NONE,
+	MOSFLM_INPUT_LINE,
+	MOSFLM_INPUT_PROMPT
+} MOSFLMInputType;
+
+
+struct mosflm_data {
+
+	/* MOSFLM auto-indexing low-level stuff */
+	int                     pty;
+	pid_t                   pid;
+	char                    *rbuffer;
+	int                     rbufpos;
+	int                     rbuflen;
+
+	/* MOSFLM high-level stuff */
+	char                    newmatfile[128];
+	char                    imagefile[128];
+	char                    sptfile[128];
+	int                     step;
+	int                     finished_ok;
+	UnitCell                *target_cell;
+
+};
+
+
+static void mosflm_parseline(const char *line, struct image *image,
+                             struct mosflm_data *dirax)
+{
+	#if MOSFLM_VERBOSE
+	char *copy;
+	int i;
+
+	copy = strdup(line);
+	for ( i=0; i<strlen(copy); i++ ) {
+		if ( copy[i] == '\r' ) copy[i]='r';
+		if ( copy[i] == '\n' ) copy[i]='\0';
+	}
+	STATUS("MOSFLM: %s\n", copy);
+	free(copy);
+	#endif
+}
+
+
+static int read_newmat(const char *filename, struct image *image)
+{
+	FILE * fh;
+	float asx, asy, asz;
+	float bsx, bsy, bsz;
+	float csx, csy, csz;
+	int n;
+	double c;
+
+	fh = fopen(filename, "r");
+	if ( fh == NULL ) {
+		return 1;
+	}
+	n  = fscanf(fh, "%f %f %f\n", &asx, &bsx, &csx);
+	n += fscanf(fh, "%f %f %f\n", &asy, &bsy, &csy);
+	n += fscanf(fh, "%f %f %f\n", &asz, &bsz, &csz);
+	if ( n != 9 ) {
+		STATUS("Fewer than 9 parameters found in NEWMAT file.\n");
+		return 1;
+	}
+	fclose(fh);
+
+	/* MOSFLM "A" matrix is multiplied by lambda, so fix this */
+	c = 1/image->lambda;
+
+	image->candidate_cells[0] = cell_new();
+
+	cell_set_reciprocal(image->candidate_cells[0],
+                            asz*c, asy*c, asx*c,
+                            bsz*c, bsy*c, bsx*c,
+                            csz*c, csy*c, csx*c);
+
+        image->ncells = 1;
+
+        return 0;
+}
+
+
+/* Need to sort mosflm peaks by intensity... */
+struct sptline {
+	double x; /* x coordinate of peak */
+	double y; /* y coordinate of peak */
+	double h; /* height of peak */
+	double s; /* sigma of peak */
+};
+
+
+static int compare_vals(const void *ap, const void *bp)
+{
+	const struct sptline a = *(struct sptline *)ap;
+	const struct sptline b = *(struct sptline *)bp;
+
+	if ( a.h < b.h ) return 1;
+	if ( a.h > b.h ) return -1;
+	return 0;
+}
+
+
+/* Write .spt file for mosflm */
+static void write_spt(struct image *image, const char *filename)
+{
+	FILE *fh;
+	int i;
+	double fclen = 67.8;  /* fake camera length in mm */
+	double fpix = 0.075;  /* fake pixel size in mm */
+	double pix;
+	double height = 100.0;
+	double sigma = 1.0;
+	int nPeaks = image_feature_count(image->features);
+	struct sptline *sptlines;
+
+	fh = fopen(filename, "w");
+	if ( !fh ) {
+		ERROR("Couldn't open temporary file '%s'\n", filename);
+		return;
+	}
+
+	fprintf(fh, "%10d %10d %10.8f %10.6f %10.6f\n", 1, 1, fpix, 1.0, 0.0);
+	fprintf(fh, "%10d %10d\n", 1, 1);
+	fprintf(fh, "%10.5f %10.5f\n", 0.0, 0.0);
+
+	sptlines = malloc(sizeof(struct sptline)*nPeaks);
+
+	for ( i=0; i<nPeaks; i++ ) {
+
+		struct imagefeature *f;
+		struct panel *p;
+		double xs, ys, rx, ry;
+
+		f = image_get_feature(image->features, i);
+		if ( f == NULL ) continue;
+
+		p = find_panel(image->det, f->fs, f->ss);
+		if ( p == NULL ) continue;
+
+		pix = 1000.0/p->res; /* pixel size in mm */
+		height = f->intensity;
+
+		xs = (f->fs-p->min_fs)*p->fsx + (f->ss-p->min_ss)*p->ssx;
+		ys = (f->ss-p->min_fs)*p->fsy + (f->ss-p->min_ss)*p->ssy;
+		rx = xs + p->cnx;
+		ry = ys + p->cny;
+
+		sptlines[i].x = ry*pix*fclen/p->clen/1000.0;
+		sptlines[i].y = -rx*pix*fclen/p->clen/1000.0;
+		sptlines[i].h = height;
+		sptlines[i].s = sigma/1000.0;
+
+	}
+
+	qsort(sptlines, nPeaks, sizeof(struct sptline), compare_vals);
+
+	for ( i=0; i<nPeaks; i++ ) {
+
+		fprintf(fh, "%10.2f %10.2f %10.2f %10.2f %10.2f %10.2f\n",
+		        sptlines[i].x, sptlines[i].y,
+		        0.0, 0.0,
+		        sptlines[i].h, sptlines[i].s);
+
+	}
+
+	free(sptlines);
+
+	fprintf(fh,"%10.2f %10.2f %10.2f %10.2f %10.2f %10.2f\n",
+	           -999.0,-999.0,-999.0,-999.0,-999.0,-999.0);
+	fclose(fh);
+}
+
+
+/* Write a dummy 1x1 pixel image file for MOSFLM.  Without post refinement,
+ * MOSFLM will ignore this, but it must be present. */
+static void write_img(struct image *image, const char *filename)
+{
+	FILE *fh;
+	unsigned short int *intimage;
+
+	intimage = malloc(sizeof(unsigned short int));
+	intimage[0] = 1;
+
+	fh = fopen(filename, "w");
+	if ( !fh ) {
+		ERROR("Couldn't open temporary file '%s'\n", filename);
+		return;
+	}
+
+	/* Write header */
+	fprintf(fh, "{\nHEADER_BYTES=512;\n");
+	fprintf(fh, "BYTE_ORDER=little_endian;\n");
+	fprintf(fh, "TYPE=unsigned_short;\n");
+	fprintf(fh, "DIM=2;\n");
+	fprintf(fh, "SIZE1=1;\n");
+	fprintf(fh, "SIZE2=1;\n");
+	fprintf(fh, "}\n");
+
+	/* Header padding */
+	while ( ftell(fh) < 512 ) fprintf(fh," ");
+
+	fwrite(intimage, sizeof(unsigned short int), 1, fh);
+	free(intimage);
+	fclose(fh);
+}
+
+
+static void mosflm_sendline(const char *line, struct mosflm_data *mosflm)
+{
+	#if MOSFLM_VERBOSE
+	char *copy;
+	int i;
+
+	copy = strdup(line);
+	for ( i=0; i<strlen(copy); i++ ) {
+		if ( copy[i] == '\r' ) copy[i]='\0';
+		if ( copy[i] == '\n' ) copy[i]='\0';
+	}
+	STATUS("To MOSFLM: '%s'\n", copy);
+	free(copy);
+	#endif
+
+	write(mosflm->pty, line, strlen(line));
+}
+
+
+static void mosflm_send_next(struct image *image, struct mosflm_data *mosflm)
+{
+	char tmp[256];
+	char symm[32];
+	const char *sg;
+	double wavelength;
+	double a, b, c, alpha, beta, gamma;
+	int i, j;
+
+	switch ( mosflm->step ) {
+
+	case 1 :
+		mosflm_sendline("DETECTOR ROTATION HORIZONTAL"
+		                " ANTICLOCKWISE ORIGIN LL FAST HORIZONTAL"
+		                " RECTANGULAR\n", mosflm);
+		break;
+
+	case 2 :
+		if ( mosflm->target_cell != NULL ) {
+			cell_get_parameters(mosflm->target_cell, &a, &b, &c,
+				            &alpha, &beta, &gamma);
+			snprintf(tmp, 255,
+			         "CELL %6.2f %6.2f %6.2f %6.2f %6.2f %6.2f\n",
+		                 a*1e10, b*1e10, c*1e10,
+		                 rad2deg(alpha), rad2deg(beta), rad2deg(gamma));
+			mosflm_sendline(tmp, mosflm);
+		} else {
+			mosflm_sendline("# Do nothing\n", mosflm);
+		}
+		break;
+
+	case 3 :
+		if ( mosflm->target_cell != NULL ) {
+			sg = cell_get_spacegroup(mosflm->target_cell);
+			/* Remove white space from space group */
+			j = 0;
+			for ( i=0; i<strlen(sg); i++ ) {
+				if (sg[i] != ' ') {
+					symm[j++] = sg[i];
+				}
+			}
+			symm[j] = '\0';
+			snprintf(tmp, 255, "SYMM %s\n", symm);
+			mosflm_sendline(tmp, mosflm);
+		} else {
+			mosflm_sendline("SYMM P1\n", mosflm);
+		}
+		break;
+
+	case 4 :
+		mosflm_sendline("DISTANCE 67.8\n", mosflm);
+		break;
+
+	case 5 :
+		mosflm_sendline("BEAM 0.0 0.0\n", mosflm);
+		break;
+
+	case 6 :
+		wavelength = image->lambda*1e10;
+		snprintf(tmp, 255, "WAVELENGTH %10.5f\n", wavelength);
+		mosflm_sendline(tmp, mosflm);
+		break;
+
+	case 7 :
+		snprintf(tmp, 255, "NEWMAT %s\n", mosflm->newmatfile);
+		mosflm_sendline(tmp, mosflm);
+		break;
+
+	case 8 :
+		snprintf(tmp, 255, "IMAGE %s phi 0 0\n", mosflm->imagefile);
+		mosflm_sendline(tmp, mosflm);
+		break;
+
+	case 9 :
+		snprintf(tmp, 255, "AUTOINDEX DPS FILE %s"
+		                   " IMAGE 1 MAXCELL 1000 REFINE\n",
+		         mosflm->sptfile);
+
+		/* "This option is only available if you e-mail Andrew Leslie
+		 * and ask for it." - MOSFLM
+		 * snprintf(tmp, 255, "AUTOINDEX NODISPLAY IMAGE 1 FILE %s\n",
+		 *         mosflm->sptfile); */
+		mosflm_sendline(tmp, mosflm);
+		break;
+
+	case 10 :
+		mosflm_sendline("GO\n", mosflm);
+		mosflm->finished_ok = 1;
+		break;
+
+	default:
+		mosflm_sendline("exit\n", mosflm);
+		return;
+
+	}
+
+	mosflm->step++;
+}
+
+
+static int mosflm_readable(struct image *image, struct mosflm_data *mosflm)
+{
+	int rval;
+	int no_string = 0;
+
+	rval = read(mosflm->pty, mosflm->rbuffer+mosflm->rbufpos,
+	            mosflm->rbuflen-mosflm->rbufpos);
+
+	if ( (rval == -1) || (rval == 0) ) return 1;
+
+	mosflm->rbufpos += rval;
+	assert(mosflm->rbufpos <= mosflm->rbuflen);
+
+	while ( (!no_string) && (mosflm->rbufpos > 0) ) {
+
+		int i;
+		int block_ready = 0;
+		MOSFLMInputType type = MOSFLM_INPUT_NONE;
+
+		/* See if there's a full line in the buffer yet */
+		for ( i=0; i<mosflm->rbufpos-1; i++ ) {
+			/* Means the last value looked at is rbufpos-2 */
+
+			/* Is there a prompt in the buffer? */
+			if ( (i+10 <= mosflm->rbufpos)
+			  && (!strncmp(mosflm->rbuffer+i, "MOSFLM => ", 10)) ) {
+				block_ready = 1;
+				type = MOSFLM_INPUT_PROMPT;
+				break;
+			}
+
+			if ( (mosflm->rbuffer[i] == '\r')
+			  && (mosflm->rbuffer[i+1] == '\n') ) {
+				block_ready = 1;
+				type = MOSFLM_INPUT_LINE;
+				break;
+			}
+
+		}
+
+		if ( block_ready ) {
+
+			unsigned int new_rbuflen;
+			unsigned int endbit_length;
+			char *block_buffer = NULL;
+
+			switch ( type ) {
+
+			case MOSFLM_INPUT_LINE :
+
+				block_buffer = malloc(i+1);
+				memcpy(block_buffer, mosflm->rbuffer, i);
+				block_buffer[i] = '\0';
+
+				if ( block_buffer[0] == '\r' ) {
+					memmove(block_buffer, block_buffer+1, i);
+				}
+
+				mosflm_parseline(block_buffer, image, mosflm);
+				free(block_buffer);
+				endbit_length = i+2;
+				break;
+
+			case MOSFLM_INPUT_PROMPT :
+
+				mosflm_send_next(image, mosflm);
+				endbit_length = i+7;
+				break;
+
+			default :
+
+				/* Obviously, this never happens :) */
+				ERROR("Unrecognised MOSFLM input mode! "
+				      "I don't know how to understand MOSFLM\n");
+				return 1;
+
+			}
+
+			/* Now the block's been parsed, it should be
+			 * forgotten about */
+			memmove(mosflm->rbuffer,
+			        mosflm->rbuffer + endbit_length,
+			        mosflm->rbuflen - endbit_length);
+
+			/* Subtract the number of bytes removed */
+			mosflm->rbufpos = mosflm->rbufpos
+			                       - endbit_length;
+			new_rbuflen = mosflm->rbuflen - endbit_length;
+			if ( new_rbuflen == 0 ) new_rbuflen = 256;
+			mosflm->rbuffer = realloc(mosflm->rbuffer,
+			                               new_rbuflen);
+			mosflm->rbuflen = new_rbuflen;
+
+		} else {
+
+			if ( mosflm->rbufpos==mosflm->rbuflen ) {
+
+				/* More buffer space is needed */
+				mosflm->rbuffer = realloc(
+				                    mosflm->rbuffer,
+				                    mosflm->rbuflen + 256);
+				mosflm->rbuflen = mosflm->rbuflen + 256;
+				/* The new space gets used at the next
+				 * read, shortly... */
+
+			}
+			no_string = 1;
+
+		}
+
+	}
+
+	return 0;
+}
+
+
+void run_mosflm(struct image *image, UnitCell *cell)
+{
+	struct mosflm_data *mosflm;
+	unsigned int opts;
+	int status;
+	int rval;
+
+	mosflm = malloc(sizeof(struct mosflm_data));
+	if ( mosflm == NULL ) {
+		ERROR("Couldn't allocate memory for MOSFLM data.\n");
+		return;
+	}
+
+	mosflm->target_cell = cell;
+
+	snprintf(mosflm->imagefile, 127, "xfel-%i_001.img", image->id);
+	write_img(image, mosflm->imagefile); /* Dummy image */
+
+	snprintf(mosflm->sptfile, 127, "xfel-%i_001.spt", image->id);
+	write_spt(image, mosflm->sptfile);
+
+	snprintf(mosflm->newmatfile, 127, "xfel-%i.newmat", image->id);
+	remove(mosflm->newmatfile);
+
+	mosflm->pid = forkpty(&mosflm->pty, NULL, NULL, NULL);
+	if ( mosflm->pid == -1 ) {
+		ERROR("Failed to fork for MOSFLM\n");
+		free(mosflm);
+		return;
+	}
+	if ( mosflm->pid == 0 ) {
+
+		/* Child process: invoke MOSFLM */
+		struct termios t;
+
+		/* Turn echo off */
+		tcgetattr(STDIN_FILENO, &t);
+		t.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL);
+		tcsetattr(STDIN_FILENO, TCSANOW, &t);
+
+		execlp("ipmosflm", "", (char *)NULL);
+		ERROR("Failed to invoke MOSFLM.\n");
+		_exit(0);
+
+	}
+
+	mosflm->rbuffer = malloc(256);
+	mosflm->rbuflen = 256;
+	mosflm->rbufpos = 0;
+
+	/* Set non-blocking */
+	opts = fcntl(mosflm->pty, F_GETFL);
+	fcntl(mosflm->pty, F_SETFL, opts | O_NONBLOCK);
+
+	mosflm->step = 1;	/* This starts the "initialisation" procedure */
+	mosflm->finished_ok = 0;
+
+	do {
+
+		fd_set fds;
+		struct timeval tv;
+		int sval;
+
+		FD_ZERO(&fds);
+		FD_SET(mosflm->pty, &fds);
+
+		tv.tv_sec = 10;
+		tv.tv_usec = 0;
+
+		sval = select(mosflm->pty+1, &fds, NULL, NULL, &tv);
+
+		if ( sval == -1 ) {
+			int err = errno;
+			ERROR("select() failed: %s\n", strerror(err));
+			rval = 1;
+		} else if ( sval != 0 ) {
+			rval = mosflm_readable(image, mosflm);
+		} else {
+			ERROR("No response from MOSFLM..\n");
+			rval = 1;
+		}
+
+	} while ( !rval );
+
+	close(mosflm->pty);
+	free(mosflm->rbuffer);
+	waitpid(mosflm->pid, &status, 0);
+
+	if ( mosflm->finished_ok == 0 ) {
+		ERROR("MOSFLM doesn't seem to be working properly.\n");
+	} else {
+		/* Read the mosflm NEWMAT file and get cell if found */
+		read_newmat(mosflm->newmatfile, image);
+	}
+
+	free(mosflm);
+}
-- 
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