d9a291f641
Took the opportunity to undo the Godot changed made to the opus source. The opus module should eventually be built in its own environment to avoid polluting others with too many include dirs and defines. TODO: Fix the platform/ stuff for opus.
102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
/* Copyright (c) 2007-2008 CSIRO
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Copyright (c) 2007-2009 Xiph.Org Foundation
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Written by Jean-Marc Valin */
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/*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef RATE_H
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#define RATE_H
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#define MAX_PSEUDO 40
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#define LOG_MAX_PSEUDO 6
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#define CELT_MAX_PULSES 128
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#define MAX_FINE_BITS 8
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#define FINE_OFFSET 21
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#define QTHETA_OFFSET 4
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#define QTHETA_OFFSET_TWOPHASE 16
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#include "cwrs.h"
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#include "modes.h"
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void compute_pulse_cache(CELTMode *m, int LM);
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static OPUS_INLINE int get_pulses(int i)
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{
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return i<8 ? i : (8 + (i&7)) << ((i>>3)-1);
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}
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static OPUS_INLINE int bits2pulses(const CELTMode *m, int band, int LM, int bits)
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{
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int i;
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int lo, hi;
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const unsigned char *cache;
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LM++;
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cache = m->cache.bits + m->cache.index[LM*m->nbEBands+band];
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lo = 0;
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hi = cache[0];
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bits--;
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for (i=0;i<LOG_MAX_PSEUDO;i++)
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{
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int mid = (lo+hi+1)>>1;
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/* OPT: Make sure this is implemented with a conditional move */
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if ((int)cache[mid] >= bits)
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hi = mid;
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else
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lo = mid;
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}
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if (bits- (lo == 0 ? -1 : (int)cache[lo]) <= (int)cache[hi]-bits)
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return lo;
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else
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return hi;
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}
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static OPUS_INLINE int pulses2bits(const CELTMode *m, int band, int LM, int pulses)
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{
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const unsigned char *cache;
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LM++;
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cache = m->cache.bits + m->cache.index[LM*m->nbEBands+band];
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return pulses == 0 ? 0 : cache[pulses]+1;
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}
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/** Compute the pulse allocation, i.e. how many pulses will go in each
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* band.
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@param m mode
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@param offsets Requested increase or decrease in the number of bits for
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each band
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@param total Number of bands
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@param pulses Number of pulses per band (returned)
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@return Total number of bits allocated
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*/
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int compute_allocation(const CELTMode *m, int start, int end, const int *offsets, const int *cap, int alloc_trim, int *intensity, int *dual_stero,
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opus_int32 total, opus_int32 *balance, int *pulses, int *ebits, int *fine_priority, int C, int LM, ec_ctx *ec, int encode, int prev, int signalBandwidth);
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#endif
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