ported musepack plugin to libmpcdev SV8 (r435)

1 files changed, 101 insertions, 0 deletions

diff --git a/plugins/musepack/decoder.h b/plugins/musepack/decoder.h
new file mode 100644
index 00000000..3813fc02
--- /dev/null
+++ b/plugins/musepack/decoder.h
@@ -0,0 +1,101 @@
+/*
+  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 decoder.h
+#ifndef _MPCDEC_DECODER_H_
+#define _MPCDEC_DECODER_H_
+#ifdef WIN32
+#pragma once
+#endif
+
+#include <mpc/reader.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SEEKING_TABLE_SIZE  256u
+// set it to SLOW_SEEKING_WINDOW to not use fast seeking
+#define FAST_SEEKING_WINDOW 32
+// set it to FAST_SEEKING_WINDOW to only use fast seeking
+#define SLOW_SEEKING_WINDOW 0x80000000
+
+enum {
+    MPC_V_MEM           = 2304,
+    MPC_DECODER_MEMSIZE = 16384,  // overall buffer size
+};
+
+struct mpc_decoder_t {
+    /// @name internal state variables
+    //@{
+	mpc_uint32_t stream_version;     ///< Streamversion of stream
+	mpc_int32_t max_band;           ///< Maximum band-index used in stream (0...31)
+	mpc_uint32_t ms;                 ///< Mid/side stereo (0: off, 1: on)
+	mpc_uint32_t channels;           ///< Number of channels in stream
+
+	mpc_uint64_t samples;            ///< Number of samples in stream
+
+	mpc_uint64_t decoded_samples;    ///< Number of samples decoded from file begining
+	mpc_uint32_t samples_to_skip;    ///< Number samples to skip (used for seeking)
+	mpc_int32_t last_max_band;       ///< number of bands used in the last frame
+
+    // randomizer state variables
+    mpc_uint32_t  __r1;
+    mpc_uint32_t  __r2;
+
+    mpc_int32_t   SCF_Index_L [32] [3];
+    mpc_int32_t   SCF_Index_R [32] [3];       // holds scalefactor-indices
+    mpc_quantizer Q [32];                     // holds quantized samples
+    mpc_int32_t   Res_L [32];
+    mpc_int32_t   Res_R [32];                 // holds the chosen quantizer for each subband
+    mpc_bool_t    DSCF_Flag_L [32];
+    mpc_bool_t    DSCF_Flag_R [32];           // differential SCF used?
+    mpc_int32_t   SCFI_L [32];
+    mpc_int32_t   SCFI_R [32];                // describes order of transmitted SCF
+    mpc_bool_t    MS_Flag[32];                // MS used?
+#ifdef MPC_FIXED_POINT
+    mpc_uint8_t   SCF_shift[256];
+#endif
+
+    MPC_SAMPLE_FORMAT V_L[MPC_V_MEM + 960];
+    MPC_SAMPLE_FORMAT V_R[MPC_V_MEM + 960];
+    MPC_SAMPLE_FORMAT Y_L[36][32];
+    MPC_SAMPLE_FORMAT Y_R[36][32];
+    MPC_SAMPLE_FORMAT SCF[256]; ///< holds adapted scalefactors (for clipping prevention)
+    //@}
+};
+
+#ifdef __cplusplus
+}
+#endif
+#endif