1 files changed, 99 insertions, 0 deletions
diff --git a/gst/flacparse/gstbitreader.h b/gst/flacparse/gstbitreader.h
new file mode 100644
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+++ b/gst/flacparse/gstbitreader.h
@@ -0,0 +1,99 @@
+/* GStreamer
+ *
+ * Copyright (C) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GST_BIT_READER_H__
+#define __GST_BIT_READER_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+/**
+ * GstBitReader:
+ * @data: Data from which the bit reader will read
+ * @size: Size of @data in bytes
+ * @byte: Current byte position
+ * @bit: Bit position in the current byte
+ *
+ * A bit reader instance.
+ */
+typedef struct {
+  const guint8 *data;
+  guint size;
+
+  guint byte;  /* Byte position */
+  guint bit;   /* Bit position in the current byte */
+} GstBitReader;
+
+GstBitReader * gst_bit_reader_new (const guint8 *data, guint size);
+GstBitReader * gst_bit_reader_new_from_buffer (const GstBuffer *buffer);
+void gst_bit_reader_free (GstBitReader *reader);
+
+void gst_bit_reader_init (GstBitReader *reader, const guint8 *data, guint size);
+void gst_bit_reader_init_from_buffer (GstBitReader *reader, const GstBuffer *buffer);
+
+gboolean gst_bit_reader_set_pos (GstBitReader *reader, guint pos);
+
+guint gst_bit_reader_get_pos (const GstBitReader *reader);
+guint gst_bit_reader_get_remaining (const GstBitReader *reader);
+
+gboolean gst_bit_reader_skip (GstBitReader *reader, guint nbits);
+gboolean gst_bit_reader_skip_to_byte (GstBitReader *reader);
+
+gboolean gst_bit_reader_get_bits_uint8 (GstBitReader *reader, guint8 *val, guint nbits);
+gboolean gst_bit_reader_get_bits_uint16 (GstBitReader *reader, guint16 *val, guint nbits);
+gboolean gst_bit_reader_get_bits_uint32 (GstBitReader *reader, guint32 *val, guint nbits);
+gboolean gst_bit_reader_get_bits_uint64 (GstBitReader *reader, guint64 *val, guint nbits);
+
+gboolean gst_bit_reader_peek_bits_uint8 (const GstBitReader *reader, guint8 *val, guint nbits);
+gboolean gst_bit_reader_peek_bits_uint16 (const GstBitReader *reader, guint16 *val, guint nbits);
+gboolean gst_bit_reader_peek_bits_uint32 (const GstBitReader *reader, guint32 *val, guint nbits);
+gboolean gst_bit_reader_peek_bits_uint64 (const GstBitReader *reader, guint64 *val, guint nbits);
+
+/**
+ * GST_BIT_READER_INIT:
+ * @data: Data from which the #GstBitReader should read
+ * @size: Size of @data in bytes
+ *
+ * A #GstBitReader must be initialized with this macro, before it can be
+ * used. This macro can used be to initialize a variable, but it cannot
+ * be assigned to a variable. In that case you have to use
+ * gst_bit_reader_init().
+ *
+ * Since: 0.10.22
+ */
+#define GST_BIT_READER_INIT(data, size) {data, size, 0, 0}
+
+/**
+ * GST_BIT_READER_INIT_FROM_BUFFER:
+ * @buffer: Buffer from which the #GstBitReader should read
+ *
+ * A #GstBitReader must be initialized with this macro, before it can be
+ * used. This macro can used be to initialize a variable, but it cannot
+ * be assigned to a variable. In that case you have to use
+ * gst_bit_reader_init().
+ *
+ * Since: 0.10.22
+ */
+#define GST_BIT_READER_INIT_FROM_BUFFER(buffer) {GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer), 0, 0}
+
+G_END_DECLS
+
+#endif /* __GST_BIT_READER_H__ */