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authorRémi Verschelde <rverschelde@gmail.com>2017-01-11 22:39:50 +0100
committerRémi Verschelde <rverschelde@gmail.com>2017-01-11 22:40:51 +0100
commit41821ba11ddd843d737ba5d40fabaabf1e393b9c (patch)
treee09fa19c626a01b2c12516570c1c5c31236c57a3 /thirdparty/libmpcdec/requant.c
parenta23ffb82bbb62b38b6511063fd54e0408b2590c2 (diff)
Remove libmpcdec bundled lib, no longer used
Musepack support was removed in 857c50db70ba52723214eca4639fe230fd827864.
Diffstat (limited to 'thirdparty/libmpcdec/requant.c')
-rw-r--r--thirdparty/libmpcdec/requant.c124
1 files changed, 0 insertions, 124 deletions
diff --git a/thirdparty/libmpcdec/requant.c b/thirdparty/libmpcdec/requant.c
deleted file mode 100644
index ebc89a10f0..0000000000
--- a/thirdparty/libmpcdec/requant.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- 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 requant.c
-/// Requantization function implementations.
-/// \todo document me
-#include <mpc/mpcdec.h>
-
-#include "requant.h"
-#include "mpcdec_math.h"
-#include "decoder.h"
-
-/* C O N S T A N T S */
-// Bits per sample for chosen quantizer
-const mpc_uint8_t _mpc_Res_bit [18] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
-};
-
-// Requantization coefficients
-// 65536/step bzw. 65536/(2*D+1)
-
-#define _(X) MAKE_MPC_SAMPLE_EX(X,14)
-
-const MPC_SAMPLE_FORMAT _mpc_Cc [1 + 18] = {
- _(111.285962475327f), // 32768/2/255*sqrt(3)
- _(65536.000000000000f), _(21845.333333333332f), _(13107.200000000001f), _(9362.285714285713f),
- _(7281.777777777777f), _(4369.066666666666f), _(2114.064516129032f), _(1040.253968253968f),
- _(516.031496062992f), _(257.003921568627f), _(128.250489236790f), _(64.062561094819f),
- _(32.015632633121f), _(16.003907203907f), _(8.000976681723f), _(4.000244155527f),
- _(2.000061037018f), _(1.000015259021f)
-};
-
-#undef _
-
-// Requantization offset
-// 2*D+1 = steps of quantizer
-const mpc_int16_t _mpc_Dc [1 + 18] = {
- 2,
- 0, 1, 2, 3, 4, 7, 15, 31, 63,
- 127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767
-};
-
-#ifdef MPC_FIXED_POINT
-static mpc_uint32_t find_shift(double fval)
-{
- mpc_int64_t val = (mpc_int64_t) fval;
- mpc_uint32_t ptr = 0;
- if(val<0)
- val = -val;
- while(val)
- {
- val >>= 1;
- ptr++;
- }
- return ptr > 31 ? 0 : 31 - ptr;
-}
-#endif
-
-/* F U N C T I O N S */
-
-#define SET_SCF(N,X) d->SCF[N] = MAKE_MPC_SAMPLE_EX(X,d->SCF_shift[N] = (mpc_uint8_t) find_shift(X));
-
-void
-mpc_decoder_scale_output(mpc_decoder *d, double factor)
-{
- mpc_int32_t n; double f1, f2;
-
-#ifndef MPC_FIXED_POINT
- factor *= 1.0 / (double) (1<<(MPC_FIXED_POINT_SHIFT-1));
-#else
- factor *= 1.0 / (double) (1<<(16-MPC_FIXED_POINT_SHIFT));
-#endif
- f1 = f2 = factor;
-
- // handles +1.58...-98.41 dB, where's scf[n] / scf[n-1] = 1.20050805774840750476
-
- SET_SCF(1,factor);
-
- f1 *= 0.83298066476582673961;
- f2 *= 1/0.83298066476582673961;
-
- for ( n = 1; n <= 128; n++ ) {
- SET_SCF((mpc_uint8_t)(1+n),f1);
- SET_SCF((mpc_uint8_t)(1-n),f2);
- f1 *= 0.83298066476582673961;
- f2 *= 1/0.83298066476582673961;
- }
-}
-
-void
-mpc_decoder_init_quant(mpc_decoder *d, double scale_factor)
-{
- mpc_decoder_scale_output(d, scale_factor);
-}