1 files changed, 52 insertions, 0 deletions
diff --git a/src/roof-buffer.h b/src/roof-buffer.h
new file mode 100644
index 0000000..a95dbaa
--- /dev/null
+++ b/src/roof-buffer.h
@@ -0,0 +1,52 @@
+#ifndef __ROOF_BUFFER_H
+#define __ROOF_BUFFER_H
+
+    // This IS harmful! Just for testing
+#define ROOF_INDEPENDENT_STREAMS
+
+#include <stdatomic.h>
+#include <stdint.h>
+#include "ufo-roof-config.h"
+
+struct _RoofBuffer {
+    guint64                     current_id;                             // The ID of the first (active) dataset in the buffer
+#ifdef ROOF_INDEPENDENT_STREAMS
+    guint64                     *first_id;                              // The ID of the first received dataset (used for numbering), -1 means not yet known
+#else
+    guint64                     first_id;                               // The ID of the first received dataset (used for numbering), -1 means not yet known
+#endif
+    guint64			*last_id;
+    guint64			n_ready;
+
+    guint			n_streams;
+    guint                       ring_size;                              // Number of datasets to buffer
+    guint			drop_buffers;				// If we need to catch up
+    guint			latency_buffers;			// we skip incomplete buffers if current_id + latency_buffers is ready
+    uint8_t			*ring_buffer;				// The ring buffer
+    _Atomic guint               *n_fragments;                           // Number of completed fragments in each buffer
+    guint                       *stream_fragment;                       // Currently processed fragment in the stream (for ordered streams)
+//    int		                *fragments;				// Mark individual completed fragments (if we care for partial data)
+
+
+    guint64			max_datasets;				// Only the specified number of datasets will be buffered, the rest will be silently dropped
+    guint			n_dims;					// Indicates if we just assemble one fragment after another or there is 2D/3D data structure (ROOF)
+    guint                       dataset_size;                           // Size (in bytes) of a full dataset
+    guint			dataset_dims[2];			// x (in bytes), y (in rows)
+    guint                       fragment_size;                          // Size (in bytes) of a single fragment (we expect fixed-size fragments at the moment)
+    guint			fragment_dims[2];			// x (in bytes), y (in rows)
+
+    guint                       fragments_per_dataset;                  // Number of packets in dataset (used to compute when dataset is ready)
+    guint                       fragments_per_stream;                   // Number of packets in each of data streams (used to compute when dataset is ready)
+};
+
+typedef struct _RoofBuffer	RoofBuffer;
+
+RoofBuffer *roof_buffer_new(RoofConfig *cfg, guint n_dims, guint max_datasets, GError **error);
+void roof_buffer_free(RoofBuffer *buf);
+
+gboolean roof_buffer_set_fragment(RoofBuffer *buffer, guint stream_id, guint64 fragment_id, gconstpointer fragment, GError **error);
+gboolean roof_buffer_skip_to_ready(RoofBuffer *buffer);
+gboolean roof_buffer_get_dataset(RoofBuffer *buffer, gpointer output_buffer, gulong *seqid, GError **error);
+gboolean roof_buffer_wait_dataset(RoofBuffer *buffer, gpointer output_buffer, gulong *seqid, gulong timeout, GError **error);
+
+#endif