1 files changed, 57 insertions, 0 deletions
diff --git a/lpg/libqr/qr/bitstream.h b/lpg/libqr/qr/bitstream.h
new file mode 100644
index 0000000..aa431e8
--- /dev/null
+++ b/lpg/libqr/qr/bitstream.h
@@ -0,0 +1,57 @@
+#ifndef QR_BITSTREAM_H
+#define QR_BITSTREAM_H
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Note: when writing / reading multiple bits, the
+ * _most_ significant bits come first in the stream.
+ * (That is, the order you would naturally write the
+ * number in binary)
+ */
+
+struct qr_bitstream;
+
+struct qr_bitstream * qr_bitstream_create(void);
+int qr_bitstream_resize(struct qr_bitstream *, size_t bits);
+void qr_bitstream_destroy(struct qr_bitstream *);
+struct qr_bitstream * qr_bitstream_dup(const struct qr_bitstream *);
+
+void qr_bitstream_seek(struct qr_bitstream *, size_t pos);
+size_t qr_bitstream_tell(const struct qr_bitstream *);
+size_t qr_bitstream_remaining(const struct qr_bitstream *);
+size_t qr_bitstream_size(const struct qr_bitstream *);
+
+unsigned long qr_bitstream_read(struct qr_bitstream *, int bits);
+
+void qr_bitstream_unpack(struct qr_bitstream *,
+                         unsigned int * result,
+                         size_t         count,
+                         int            bitsize);
+
+int qr_bitstream_write(struct qr_bitstream *,
+                       unsigned long value,
+                       int bits);
+
+int qr_bitstream_pack(struct qr_bitstream *,
+                      const unsigned int * values,
+                      size_t               count,
+                      int                  bitsize);
+
+int qr_bitstream_cat(struct qr_bitstream *,
+                     const struct qr_bitstream * src);
+
+int qr_bitstream_copy(struct qr_bitstream * dest,
+                      struct qr_bitstream * src,
+                      size_t count);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+