1 files changed, 123 insertions, 0 deletions

diff --git a/lib/rbcodec/codecs/libmusepack/internal.h b/lib/rbcodec/codecs/libmusepack/internal.h
new file mode 100644
index 0000000000..897e6a7b17
--- /dev/null
+++ b/lib/rbcodec/codecs/libmusepack/internal.h
@@ -0,0 +1,123 @@
+/*
+  Copyright (c) 2005-2009, 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 internal.h
+/// Definitions and structures used only internally by the libmpcdec.
+#ifndef _MPCDEC_INTERNAL_H_
+#define _MPCDEC_INTERNAL_H_
+#ifdef WIN32
+#pragma once
+#endif
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "mpcdec.h"
+
+/* rockbox: not used, rockbox's swap32 is used now.
+/// Big/little endian 32 bit byte swapping routine.
+static mpc_inline
+mpc_uint32_t mpc_swap32(mpc_uint32_t val) {
+    return (((val & 0xFF000000) >> 24) | ((val & 0x00FF0000) >> 8)
+          | ((val & 0x0000FF00) <<  8) | ((val & 0x000000FF) << 24));
+}
+*/
+typedef struct mpc_block_t {
+    char key[2];    // block key
+    mpc_uint64_t size;  // block size minus the block header size
+} mpc_block;
+
+#define MAX_FRAME_SIZE 4352
+#define DEMUX_BUFFER_SIZE (32768 - MAX_FRAME_SIZE) // need some space as sand box
+
+struct mpc_demux_t {
+    mpc_reader * r;
+    mpc_decoder * d;
+    mpc_streaminfo si;
+
+    // buffer
+    mpc_uint8_t *buffer;
+    mpc_size_t bytes_total;
+    mpc_bits_reader bits_reader;
+    mpc_int32_t block_bits; /// bits remaining in current audio block
+    mpc_uint_t block_frames; /// frames remaining in current audio block
+
+    // seeking
+    mpc_seek_t * seek_table;
+    mpc_uint_t seek_pwr; /// distance between 2 frames in seek_table = 2^seek_pwr
+    mpc_uint32_t seek_table_size; /// used size in seek_table
+
+    // chapters
+/* rockbox: not used
+    mpc_seek_t chap_pos; /// supposed position of the first chapter block
+    mpc_int_t chap_nb; /// number of chapters (-1 if unknown, 0 if no chapter)
+    mpc_chap_info * chap; /// chapters position and tag
+*/
+};
+
+/**
+ * checks if a block key is valid
+ * @param key the two caracters key to check
+ * @return MPC_STATUS_FAIL if the key is invalid, MPC_STATUS_OK else
+ */
+static mpc_inline mpc_status mpc_check_key(char * key)
+{
+    if (key[0] < 65 || key[0] > 90 || key[1] < 65 || key[1] > 90)
+        return MPC_STATUS_FAIL;
+    return MPC_STATUS_OK;
+}
+
+/// helper functions used by multiple files
+mpc_uint32_t mpc_random_int(mpc_decoder *d); // in synth_filter.c
+void mpc_decoder_init_quant(mpc_decoder *d, MPC_SAMPLE_FORMAT factor); // in requant.c
+void mpc_decoder_synthese_filter_float(mpc_decoder *d, MPC_SAMPLE_FORMAT* OutData, mpc_int_t channels);
+unsigned long mpc_crc32(unsigned char *buf, int len);
+
+// streaminfo.c
+mpc_status streaminfo_read_header_sv8(mpc_streaminfo* si,
+                                      const mpc_bits_reader * r_in,
+                                      mpc_size_t block_size);
+mpc_status streaminfo_read_header_sv7(mpc_streaminfo* si, mpc_bits_reader * r_in);
+void  streaminfo_encoder_info(mpc_streaminfo* si, const mpc_bits_reader * r_in);
+void  streaminfo_gain(mpc_streaminfo* si, const mpc_bits_reader * r_in);
+
+// mpc_decoder.c
+void mpc_decoder_reset_scf(mpc_decoder * d, int value);
+
+#define MPC_IS_FAILURE(X) ((int)(X) < (int)MPC_STATUS_OK)
+#define MPC_AUTO_FAIL(X) { mpc_status s = (X); if (MPC_IS_FAILURE(s)) return s; }
+
+#ifdef __cplusplus
+}
+#endif
+#endif