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

1 files changed, 144 insertions, 0 deletions

diff --git a/apps/codecs/libmusepack/math.h b/apps/codecs/libmusepack/math.h
new file mode 100644
index 0000000..3965eec
--- /dev/null
+++ b/apps/codecs/libmusepack/math.h
@@ -0,0 +1,144 @@
+/*
+  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 mpc_math.h
+/// Libmusepack internal math routines.  
+
+#ifndef _musepack_math_h_
+#define _musepack_math_h_
+
+#define MPC_FIXED_POINT
+
+#define MPC_FIXED_POINT_SHIFT 16
+
+#ifdef MPC_FIXED_POINT
+
+
+#ifdef _WIN32_WCE
+
+#include <cmnintrin.h>
+
+#define MPC_HAVE_MULHIGH
+
+#endif
+
+
+#define MPC_FIXED_POINT_SCALE_SHIFT (MPC_FIXED_POINT_SHIFT + MPC_FIXED_POINT_FRACTPART)
+#define MPC_FIXED_POINT_SCALE (1 << (MPC_FIXED_POINT_SCALE_SHIFT - 1))
+
+
+//in fixedpoint mode, results in decode output buffer are in -MPC_FIXED_POINT_SCALE ... MPC_FIXED_POINT_SCALE range
+
+#define MPC_FIXED_POINT_FRACTPART 14
+typedef mpc_int32_t MPC_SAMPLE_FORMAT;
+
+typedef mpc_int64_t MPC_SAMPLE_FORMAT_MULTIPLY;
+
+#define MAKE_MPC_SAMPLE(X) (MPC_SAMPLE_FORMAT)((double)(X) * (double)(((mpc_int64_t)1)<<MPC_FIXED_POINT_FRACTPART))
+#define MAKE_MPC_SAMPLE_EX(X,Y) (MPC_SAMPLE_FORMAT)((double)(X) * (double)(((mpc_int64_t)1)<<(Y)))
+
+#define MPC_MULTIPLY_NOTRUNCATE(X,Y) \
+	(((MPC_SAMPLE_FORMAT_MULTIPLY)(X) * (MPC_SAMPLE_FORMAT_MULTIPLY)(Y)) >> MPC_FIXED_POINT_FRACTPART)
+
+#define MPC_MULTIPLY_EX_NOTRUNCATE(X,Y,Z) \
+	(((MPC_SAMPLE_FORMAT_MULTIPLY)(X) * (MPC_SAMPLE_FORMAT_MULTIPLY)(Y)) >> (Z))
+
+#ifdef _DEBUG
+static inline MPC_SAMPLE_FORMAT MPC_MULTIPLY(MPC_SAMPLE_FORMAT item1,MPC_SAMPLE_FORMAT item2)
+{
+	MPC_SAMPLE_FORMAT_MULTIPLY temp = MPC_MULTIPLY_NOTRUNCATE(item1,item2);
+	assert(temp == (MPC_SAMPLE_FORMAT_MULTIPLY)(MPC_SAMPLE_FORMAT)temp);
+	return (MPC_SAMPLE_FORMAT)temp;
+}
+
+static inline MPC_SAMPLE_FORMAT MPC_MULTIPLY_EX(MPC_SAMPLE_FORMAT item1,MPC_SAMPLE_FORMAT item2,unsigned shift)
+{
+	MPC_SAMPLE_FORMAT_MULTIPLY temp = MPC_MULTIPLY_EX_NOTRUNCATE(item1,item2,shift);
+	assert(temp == (MPC_SAMPLE_FORMAT_MULTIPLY)(MPC_SAMPLE_FORMAT)temp);
+	return (MPC_SAMPLE_FORMAT)temp;
+}
+
+#else
+
+#define MPC_MULTIPLY(X,Y) ((MPC_SAMPLE_FORMAT)MPC_MULTIPLY_NOTRUNCATE(X,Y))
+#define MPC_MULTIPLY_EX(X,Y,Z) ((MPC_SAMPLE_FORMAT)MPC_MULTIPLY_EX_NOTRUNCATE(X,Y,Z))
+
+#endif
+
+#ifdef MPC_HAVE_MULHIGH
+#define MPC_MULTIPLY_FRACT(X,Y) _MulHigh(X,Y)
+#else
+#define MPC_MULTIPLY_FRACT(X,Y) MPC_MULTIPLY_EX(X,Y,32)
+#endif
+
+#define MPC_MAKE_FRACT_CONST(X) (MPC_SAMPLE_FORMAT)((X) * (double)(((mpc_int64_t)1)<<32) )
+#define MPC_MULTIPLY_FRACT_CONST(X,Y) MPC_MULTIPLY_FRACT(X,MPC_MAKE_FRACT_CONST(Y))
+#define MPC_MULTIPLY_FRACT_CONST_FIX(X,Y,Z) ( MPC_MULTIPLY_FRACT(X,MPC_MAKE_FRACT_CONST( Y / (1<<(Z)) )) << (Z) )
+#define MPC_MULTIPLY_FRACT_CONST_SHR(X,Y,Z) MPC_MULTIPLY_FRACT(X,MPC_MAKE_FRACT_CONST( Y / (1<<(Z)) ))
+
+#define MPC_MULTIPLY_FLOAT_INT(X,Y) ((X)*(Y))
+#define MPC_SCALE_CONST(X,Y,Z) MPC_MULTIPLY_EX(X,MAKE_MPC_SAMPLE_EX(Y,Z),(Z))
+#define MPC_SCALE_CONST_SHL(X,Y,Z,S) MPC_MULTIPLY_EX(X,MAKE_MPC_SAMPLE_EX(Y,Z),(Z)-(S))
+#define MPC_SCALE_CONST_SHR(X,Y,Z,S) MPC_MULTIPLY_EX(X,MAKE_MPC_SAMPLE_EX(Y,Z),(Z)+(S))
+#define MPC_SHR(X,Y) ((X)>>(Y))
+#define MPC_SHL(X,Y) ((X)<<(Y))
+
+#else
+
+//in floating-point mode, decoded samples are in -1...1 range
+
+typedef float MPC_SAMPLE_FORMAT;
+
+#define MAKE_MPC_SAMPLE(X) ((MPC_SAMPLE_FORMAT)(X))
+#define MAKE_MPC_SAMPLE_EX(X,Y) ((MPC_SAMPLE_FORMAT)(X))
+
+#define MPC_MULTIPLY_FRACT(X,Y) ((X)*(Y))
+#define MPC_MAKE_FRACT_CONST(X) (X)
+#define MPC_MULTIPLY_FRACT_CONST(X,Y) MPC_MULTPLY_FRACT(X,MPC_MAKE_FRACT_CONST(Y))
+#define MPC_MULTIPLY_FRACT_CONST_SHR(X,Y,Z) MPC_MULTIPLY_FRACT(X,MPC_MAKE_FRACT_CONST( Y ))
+#define MPC_MULTIPLY_FRACT_CONST_FIX(X,Y,Z) MPC_MULTIPLY_FRACT(X,MPC_MAKE_FRACT_CONST( Y ))
+
+#define MPC_MULTIPLY_FLOAT_INT(X,Y) ((X)*(Y))
+#define MPC_MULTIPLY(X,Y) ((X)*(Y))
+#define MPC_MULTIPLY_EX(X,Y,Z) ((X)*(Y))
+#define MPC_SCALE_CONST(X,Y,Z) ((X)*(Y))
+#define MPC_SCALE_CONST_SHL(X,Y,Z,S) ((X)*(Y))
+#define MPC_SCALE_CONST_SHR(X,Y,Z,S) ((X)*(Y))
+#define MPC_SHR(X,Y) (X)
+#define MPC_SHL(X,Y) (X)
+
+#endif
+
+#endif // _musepack_math_h_
+