Initial import of NFC GNSS SDK project

2026-09-15 16:10:12 +08:00
commit 2746cc3d4e
3070 changed files with 892062 additions and 0 deletions
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+#ifndef BITSTREAM_H
+#define BITSTREAM_H
+
+typedef struct bit_stream_struc {
+  unsigned char *data; /* Processed data */
+  int data_size;       /* Total data size */
+  int data_position;   /* Data position */
+  unsigned int cache;  /* bit stream cache */
+  int cache_bits;      /* free bits in cache */
+} bitstream_t;
+
+/* "bit_stream.h" Definitions */
+
+#define MINIMUM 4 /* Minimum size of the buffer in bytes */
+#define MAX_LENGTH                                                             \
+  32 /* Maximum length of word written or                                      \
+        read from bit stream */
+
+#define BUFFER_SIZE 4096
+
+#define MIN(A, B) ((A) < (B) ? (A) : (B))
+#define MAX(A, B) ((A) > (B) ? (A) : (B))
+
+void shine_open_bit_stream(bitstream_t *bs, const int size);
+void shine_close_bit_stream(bitstream_t *bs);
+void shine_putbits(bitstream_t *bs, unsigned int val, unsigned int N);
+int shine_get_bits_count(bitstream_t *bs);
+
+#endif