rate.h

/* Copyright (c) 2007-2008 CSIRO
 Copyright (c) 2007-2009 Xiph.Org Foundation
 Written by Jean-Marc Valin */
/*
 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.

 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.
*/

#ifndef RATE_H
#define RATE_H

#define MAX_PSEUDO 40
#define LOG_MAX_PSEUDO 6

#define CELT_MAX_PULSES 128

#define MAX_FINE_BITS 8

#define FINE_OFFSET 21
#define QTHETA_OFFSET 4
#define QTHETA_OFFSET_TWOPHASE 16

#include "cwrs.h"
#include "modes.h"

void compute_pulse_cache(CELTMode *m, int LM);

static OPUS_INLINE int get_pulses(int i)
{
 return i<8 ? i : (8 + (i&7)) << ((i>>3)-1);
}

static OPUS_INLINE int bits2pulses(const CELTMode *m, int band, int LM, int bits)
{
 int i;
 int lo, hi;
 const unsigned char *cache;

 LM++;
 cache = m->cache.bits + m->cache.index[LM*m->nbEBands+band];

 lo = 0;
 hi = cache[0];
 bits--;
 for (i=0;i<LOG_MAX_PSEUDO;i++)
 {
 int mid = (lo+hi+1)>>1;
 /* OPT: Make sure this is implemented with a conditional move */
 if ((int)cache[mid] >= bits)
 hi = mid;
 else
 lo = mid;
 }
 if (bits- (lo == 0 ? -1 : (int)cache[lo]) <= (int)cache[hi]-bits)
 return lo;
 else
 return hi;
}

static OPUS_INLINE int pulses2bits(const CELTMode *m, int band, int LM, int pulses)
{
 const unsigned char *cache;

 LM++;
 cache = m->cache.bits + m->cache.index[LM*m->nbEBands+band];
 return pulses == 0 ? 0 : cache[pulses]+1;
}

int compute_allocation(const CELTMode *m, int start, int end, const int *offsets, const int *cap, int alloc_trim, int *intensity, int *dual_stero,
 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);

#endif