1 files changed, 57 insertions, 0 deletions
diff --git a/libcrystfel/src/diffraction-gpu.h b/libcrystfel/src/diffraction-gpu.h
new file mode 100644
index 00000000..a3bde4e1
--- /dev/null
+++ b/libcrystfel/src/diffraction-gpu.h
@@ -0,0 +1,57 @@
+/*
+ * diffraction-gpu.h
+ *
+ * Calculate diffraction patterns by Fourier methods (GPU version)
+ *
+ * (c) 2006-2011 Thomas White <taw@physics.org>
+ *
+ * Part of CrystFEL - crystallography with a FEL
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifndef DIFFRACTION_GPU_H
+#define DIFFRACTION_GPU_H
+
+#include "image.h"
+#include "cell.h"
+
+struct gpu_context;
+
+#if HAVE_OPENCL
+
+extern void get_diffraction_gpu(struct gpu_context *gctx, struct image *image,
+                                int na, int nb, int nc, UnitCell *ucell);
+extern struct gpu_context *setup_gpu(int no_sfac,
+                                     const double *intensities,
+                                     const unsigned char *flags,
+                                     const char *sym, int dev_num);
+extern void cleanup_gpu(struct gpu_context *gctx);
+
+#else
+
+static void get_diffraction_gpu(struct gpu_context *gctx, struct image *image,
+                                int na, int nb, int nc, UnitCell *ucell)
+{
+	/* Do nothing */
+	ERROR("This copy of CrystFEL was not compiled with OpenCL support.\n");
+}
+
+static struct gpu_context *setup_gpu(int no_sfac,
+                                     const double *intensities,
+                                     const unsigned char *flags,
+                                     const char *sym, int dev_num)
+{
+	return NULL;
+}
+
+static void cleanup_gpu(struct gpu_context *gctx)
+{
+}
+
+#endif
+
+#endif	/* DIFFRACTION_GPU_H */