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authorThom Johansen <thomj@rockbox.org>2005-04-12 21:29:48 +0000
committerThom Johansen <thomj@rockbox.org>2005-04-12 21:29:48 +0000
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tree930db449ebf09948d49350e984b8ba8f4d9d8b29 /apps/codecs/libmusepack/huffman.h
parent34e2f722f778defa9be7fffe9bb4ee415b799890 (diff)
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Musepack support, complete with mpc2wav plugin. Thanks go out to rasher for initiating the port.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6276 a1c6a512-1295-4272-9138-f99709370657
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+/*
+ Copyright (c) 2005, The Musepack Development Team
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the following
+ disclaimer in the documentation and/or other materials provided
+ with the distribution.
+
+ * Neither the name of the The Musepack Development Team nor the
+ names of its contributors may be used to endorse or promote
+ products derived from this software without specific prior
+ written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/// \file huffman.h
+/// Data structures and functions for huffman coding.
+
+#ifndef _musepack_huffman_h_
+#define _musepack_huffman_h_
+
+#include "config_types.h"
+#include "decoder.h"
+
+struct mpc_decoder_t; // forward declare to break circular dependencies
+
+/// Huffman table entry.
+typedef struct huffman_type_t {
+ mpc_uint32_t Code;
+ mpc_uint32_t Length;
+ mpc_int32_t Value;
+} HuffmanTyp;
+
+//! \brief Sorts huffman-tables by codeword.
+//!
+//! offset resulting value.
+//! \param elements
+//! \param Table table to sort
+//! \param offset offset of resulting sort
+void
+mpc_decoder_resort_huff_tables(
+ const mpc_uint32_t elements, HuffmanTyp *Table, const mpc_int32_t offset);
+
+/// Initializes sv6 huffman decoding structures.
+void mpc_decoder_init_huffman_sv6(struct mpc_decoder_t *d);
+
+/// Initializes sv6 huffman decoding tables.
+void mpc_decoder_init_huffman_sv6_tables(struct mpc_decoder_t *d);
+
+/// Initializes sv7 huffman decoding structures.
+void mpc_decoder_init_huffman_sv7(struct mpc_decoder_t *d);
+
+/// Initializes sv7 huffman decoding tables.
+void mpc_decoder_init_huffman_sv7_tables(struct mpc_decoder_t *d);
+
+#endif // _musepack_huffman_h_