Initial commit based on common repo commit ffeb9c9b

libs/3rd-party/mseed/steimdata.h

@@ -0,0 +1,51 @@
+/***************************************************************************
+ * steimdata.h:
+ * 
+ * Declarations for Steim compression routines.
+ *
+ * modified: 2004.278
+ ***************************************************************************/
+
+#ifndef STEIMDATA_H
+#define STEIMDATA_H 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define STEIM1_FRAME_MAX_SAMPLES  60
+#define STEIM2_FRAME_MAX_SAMPLES  105
+
+#define VALS_PER_FRAME  15      /* # of ints for data per frame.*/
+
+#define STEIM1_SPECIAL_MASK     0
+#define STEIM1_BYTE_MASK        1
+#define STEIM1_HALFWORD_MASK    2
+#define STEIM1_FULLWORD_MASK    3
+
+#define STEIM2_SPECIAL_MASK     0
+#define STEIM2_BYTE_MASK        1
+#define STEIM2_123_MASK         2
+#define STEIM2_567_MASK         3
+
+typedef union u_diff {          /* union for Steim objects.     */
+  int8_t          byte[4];      /* 4 1-byte differences.        */
+  int16_t         hw[2];        /* 2 halfword differences.      */
+  int32_t         fw;           /* 1 fullword difference.       */
+} U_DIFF;
+
+typedef struct frame {          /* frame in a seed data record. */
+  uint32_t        ctrl;         /* control word for frame.      */
+  U_DIFF          w[15];        /* compressed data.             */
+} FRAME;
+
+typedef struct dframes {        /* seed data frames.            */
+    FRAME f[1];                 /* data record header frames.   */
+} DFRAMES;
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* STEIMDATA_H */