1885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Copyright (c) 2007-2008 CSIRO 2885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org Copyright (c) 2007-2009 Xiph.Org Foundation 3885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org Copyright (c) 2008 Gregory Maxwell 4885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org Written by Jean-Marc Valin and Gregory Maxwell */ 5885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* 6885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org Redistribution and use in source and binary forms, with or without 7885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org modification, are permitted provided that the following conditions 8885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org are met: 9885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 10885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org - Redistributions of source code must retain the above copyright 11885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org notice, this list of conditions and the following disclaimer. 12885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 13885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org - Redistributions in binary form must reproduce the above copyright 14885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org notice, this list of conditions and the following disclaimer in the 15885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org documentation and/or other materials provided with the distribution. 16885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 17885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 21885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 22885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 23885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 24885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 25885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 26885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 27885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org*/ 29885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 30885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifdef HAVE_CONFIG_H 31885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#include "config.h" 32885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 33885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 34885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#include "celt.h" 35885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#include "modes.h" 36885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#include "rate.h" 37885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#include "os_support.h" 38885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#include "stack_alloc.h" 39885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#include "quant_bands.h" 40885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 41885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgstatic const opus_int16 eband5ms[] = { 42885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/*0 200 400 600 800 1k 1.2 1.4 1.6 2k 2.4 2.8 3.2 4k 4.8 5.6 6.8 8k 9.6 12k 15.6 */ 43885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 34, 40, 48, 60, 78, 100 44885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org}; 45885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 46885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Alternate tuning (partially derived from Vorbis) */ 47885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define BITALLOC_SIZE 11 48885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Bit allocation table in units of 1/32 bit/sample (0.1875 dB SNR) */ 49885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgstatic const unsigned char band_allocation[] = { 50885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/*0 200 400 600 800 1k 1.2 1.4 1.6 2k 2.4 2.8 3.2 4k 4.8 5.6 6.8 8k 9.6 12k 15.6 */ 51885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 52885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 90, 80, 75, 69, 63, 56, 49, 40, 34, 29, 20, 18, 10, 0, 0, 0, 0, 0, 0, 0, 0, 53885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org110,100, 90, 84, 78, 71, 65, 58, 51, 45, 39, 32, 26, 20, 12, 0, 0, 0, 0, 0, 0, 54885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org118,110,103, 93, 86, 80, 75, 70, 65, 59, 53, 47, 40, 31, 23, 15, 4, 0, 0, 0, 0, 55885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org126,119,112,104, 95, 89, 83, 78, 72, 66, 60, 54, 47, 39, 32, 25, 17, 12, 1, 0, 0, 56885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org134,127,120,114,103, 97, 91, 85, 78, 72, 66, 60, 54, 47, 41, 35, 29, 23, 16, 10, 1, 57885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org144,137,130,124,113,107,101, 95, 88, 82, 76, 70, 64, 57, 51, 45, 39, 33, 26, 15, 1, 58885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org152,145,138,132,123,117,111,105, 98, 92, 86, 80, 74, 67, 61, 55, 49, 43, 36, 20, 1, 59885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org162,155,148,142,133,127,121,115,108,102, 96, 90, 84, 77, 71, 65, 59, 53, 46, 30, 1, 60885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org172,165,158,152,143,137,131,125,118,112,106,100, 94, 87, 81, 75, 69, 63, 56, 45, 20, 61885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org200,200,200,200,200,200,200,200,198,193,188,183,178,173,168,163,158,153,148,129,104, 62885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org}; 63885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 64885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifndef CUSTOM_MODES_ONLY 65885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org #ifdef FIXED_POINT 66885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org #include "static_modes_fixed.h" 67885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org #else 68885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org #include "static_modes_float.h" 69885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org #endif 70885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif /* CUSTOM_MODES_ONLY */ 71885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 72885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifndef M_PI 73885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define M_PI 3.141592653 74885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 75885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 76885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifdef CUSTOM_MODES 77885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 78885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Defining 25 critical bands for the full 0-20 kHz audio bandwidth 79885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org Taken from http://ccrma.stanford.edu/~jos/bbt/Bark_Frequency_Scale.html */ 80885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define BARK_BANDS 25 81885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgstatic const opus_int16 bark_freq[BARK_BANDS+1] = { 82885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 0, 100, 200, 300, 400, 83885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 510, 630, 770, 920, 1080, 84885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 1270, 1480, 1720, 2000, 2320, 85885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 2700, 3150, 3700, 4400, 5300, 86885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 6400, 7700, 9500, 12000, 15500, 87885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 20000}; 88885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 89885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgstatic opus_int16 *compute_ebands(opus_int32 Fs, int frame_size, int res, int *nbEBands) 90885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org{ 91885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int16 *eBands; 92885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org int i, j, lin, low, high, nBark, offset=0; 93885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 94885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* All modes that have 2.5 ms short blocks use the same definition */ 95885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (Fs == 400*(opus_int32)frame_size) 96885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 97885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org *nbEBands = sizeof(eband5ms)/sizeof(eband5ms[0])-1; 98885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org eBands = opus_alloc(sizeof(opus_int16)*(*nbEBands+1)); 99885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=0;i<*nbEBands+1;i++) 100885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org eBands[i] = eband5ms[i]; 101885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return eBands; 102885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 103885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Find the number of critical bands supported by our sampling rate */ 104885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (nBark=1;nBark<BARK_BANDS;nBark++) 105885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (bark_freq[nBark+1]*2 >= Fs) 106885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org break; 107885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 108885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Find where the linear part ends (i.e. where the spacing is more than min_width */ 109885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (lin=0;lin<nBark;lin++) 110885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (bark_freq[lin+1]-bark_freq[lin] >= res) 111885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org break; 112885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 113885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org low = (bark_freq[lin]+res/2)/res; 114885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org high = nBark-lin; 115885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org *nbEBands = low+high; 116885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org eBands = opus_alloc(sizeof(opus_int16)*(*nbEBands+2)); 117885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 118885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (eBands==NULL) 119885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return NULL; 120885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 121885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Linear spacing (min_width) */ 122885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=0;i<low;i++) 123885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org eBands[i] = i; 124885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (low>0) 125885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org offset = eBands[low-1]*res - bark_freq[lin-1]; 126885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Spacing follows critical bands */ 127885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=0;i<high;i++) 128885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 129885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org int target = bark_freq[lin+i]; 130885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Round to an even value */ 131885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org eBands[i+low] = (target+offset/2+res)/(2*res)*2; 132885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org offset = eBands[i+low]*res - target; 133885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 134885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Enforce the minimum spacing at the boundary */ 135885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=0;i<*nbEBands;i++) 136885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (eBands[i] < i) 137885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org eBands[i] = i; 138885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Round to an even value */ 139885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org eBands[*nbEBands] = (bark_freq[nBark]+res)/(2*res)*2; 140885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (eBands[*nbEBands] > frame_size) 141885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org eBands[*nbEBands] = frame_size; 142885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=1;i<*nbEBands-1;i++) 143885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 144885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (eBands[i+1]-eBands[i] < eBands[i]-eBands[i-1]) 145885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 146885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org eBands[i] -= (2*eBands[i]-eBands[i-1]-eBands[i+1])/2; 147885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 148885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 149885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Remove any empty bands. */ 150885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=j=0;i<*nbEBands;i++) 151885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if(eBands[i+1]>eBands[j]) 152885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org eBands[++j]=eBands[i+1]; 153885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org *nbEBands=j; 154885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 155885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=1;i<*nbEBands;i++) 156885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 157885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Every band must be smaller than the last band. */ 158885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org celt_assert(eBands[i]-eBands[i-1]<=eBands[*nbEBands]-eBands[*nbEBands-1]); 159885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Each band must be no larger than twice the size of the previous one. */ 160885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org celt_assert(eBands[i+1]-eBands[i]<=2*(eBands[i]-eBands[i-1])); 161885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 162885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 163885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return eBands; 164885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 165885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 166885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgstatic void compute_allocation_table(CELTMode *mode) 167885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org{ 168885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org int i, j; 169885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org unsigned char *allocVectors; 170885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org int maxBands = sizeof(eband5ms)/sizeof(eband5ms[0])-1; 171885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 172885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->nbAllocVectors = BITALLOC_SIZE; 173885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org allocVectors = opus_alloc(sizeof(unsigned char)*(BITALLOC_SIZE*mode->nbEBands)); 174885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (allocVectors==NULL) 175885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return; 176885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 177885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Check for standard mode */ 178885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (mode->Fs == 400*(opus_int32)mode->shortMdctSize) 179885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 180885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=0;i<BITALLOC_SIZE*mode->nbEBands;i++) 181885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org allocVectors[i] = band_allocation[i]; 182885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->allocVectors = allocVectors; 183885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return; 184885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 185885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* If not the standard mode, interpolate */ 186885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Compute per-codec-band allocation from per-critical-band matrix */ 187885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=0;i<BITALLOC_SIZE;i++) 188885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 189885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (j=0;j<mode->nbEBands;j++) 190885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 191885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org int k; 192885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (k=0;k<maxBands;k++) 193885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 194885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (400*(opus_int32)eband5ms[k] > mode->eBands[j]*(opus_int32)mode->Fs/mode->shortMdctSize) 195885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org break; 196885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 197885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (k>maxBands-1) 198885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org allocVectors[i*mode->nbEBands+j] = band_allocation[i*maxBands + maxBands-1]; 199885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org else { 200885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 a0, a1; 201885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org a1 = mode->eBands[j]*(opus_int32)mode->Fs/mode->shortMdctSize - 400*(opus_int32)eband5ms[k-1]; 202885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org a0 = 400*(opus_int32)eband5ms[k] - mode->eBands[j]*(opus_int32)mode->Fs/mode->shortMdctSize; 203885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org allocVectors[i*mode->nbEBands+j] = (a0*band_allocation[i*maxBands+k-1] 204885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org + a1*band_allocation[i*maxBands+k])/(a0+a1); 205885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 206885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 207885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 208885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 209885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /*printf ("\n"); 210885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=0;i<BITALLOC_SIZE;i++) 211885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 212885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (j=0;j<mode->nbEBands;j++) 213885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org printf ("%d ", allocVectors[i*mode->nbEBands+j]); 214885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org printf ("\n"); 215885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 216885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org exit(0);*/ 217885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 218885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->allocVectors = allocVectors; 219885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 220885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 221885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif /* CUSTOM_MODES */ 222885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 223885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgCELTMode *opus_custom_mode_create(opus_int32 Fs, int frame_size, int *error) 224885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org{ 225885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org int i; 226885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifdef CUSTOM_MODES 227885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org CELTMode *mode=NULL; 228885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org int res; 229885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_val16 *window; 230885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int16 *logN; 231885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org int LM; 232885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org ALLOC_STACK; 233885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#if !defined(VAR_ARRAYS) && !defined(USE_ALLOCA) 234885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (global_stack==NULL) 235885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org goto failure; 236885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 237885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 238885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 239885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifndef CUSTOM_MODES_ONLY 240885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=0;i<TOTAL_MODES;i++) 241885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 242885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org int j; 243885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (j=0;j<4;j++) 244885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 245885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (Fs == static_mode_list[i]->Fs && 246885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org (frame_size<<j) == static_mode_list[i]->shortMdctSize*static_mode_list[i]->nbShortMdcts) 247885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 248885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (error) 249885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org *error = OPUS_OK; 250885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return (CELTMode*)static_mode_list[i]; 251885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 252885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 253885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 254885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif /* CUSTOM_MODES_ONLY */ 255885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 256885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifndef CUSTOM_MODES 257885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (error) 258885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org *error = OPUS_BAD_ARG; 259885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return NULL; 260885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#else 261885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 262885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* The good thing here is that permutation of the arguments will automatically be invalid */ 263885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 264885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (Fs < 8000 || Fs > 96000) 265885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 266885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (error) 267885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org *error = OPUS_BAD_ARG; 268885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return NULL; 269885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 270885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (frame_size < 40 || frame_size > 1024 || frame_size%2!=0) 271885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 272885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (error) 273885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org *error = OPUS_BAD_ARG; 274885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return NULL; 275885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 276885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Frames of less than 1ms are not supported. */ 277885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if ((opus_int32)frame_size*1000 < Fs) 278885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 279885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (error) 280885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org *error = OPUS_BAD_ARG; 281885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return NULL; 282885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 283885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 284885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if ((opus_int32)frame_size*75 >= Fs && (frame_size%16)==0) 285885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 286885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org LM = 3; 287885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else if ((opus_int32)frame_size*150 >= Fs && (frame_size%8)==0) 288885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 289885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org LM = 2; 290885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else if ((opus_int32)frame_size*300 >= Fs && (frame_size%4)==0) 291885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 292885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org LM = 1; 293885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else 294885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 295885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org LM = 0; 296885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 297885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 298885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Shorts longer than 3.3ms are not supported. */ 299885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if ((opus_int32)(frame_size>>LM)*300 > Fs) 300885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 301885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (error) 302885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org *error = OPUS_BAD_ARG; 303885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return NULL; 304885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 305885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 306885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode = opus_alloc(sizeof(CELTMode)); 307885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (mode==NULL) 308885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org goto failure; 309885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->Fs = Fs; 310885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 311885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Pre/de-emphasis depends on sampling rate. The "standard" pre-emphasis 312885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org is defined as A(z) = 1 - 0.85*z^-1 at 48 kHz. Other rates should 313885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org approximate that. */ 314885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if(Fs < 12000) /* 8 kHz */ 315885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 316885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[0] = QCONST16(0.3500061035f, 15); 317885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[1] = -QCONST16(0.1799926758f, 15); 318885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[2] = QCONST16(0.2719968125f, SIG_SHIFT); /* exact 1/preemph[3] */ 319885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[3] = QCONST16(3.6765136719f, 13); 320885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else if(Fs < 24000) /* 16 kHz */ 321885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 322885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[0] = QCONST16(0.6000061035f, 15); 323885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[1] = -QCONST16(0.1799926758f, 15); 324885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[2] = QCONST16(0.4424998650f, SIG_SHIFT); /* exact 1/preemph[3] */ 325885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[3] = QCONST16(2.2598876953f, 13); 326885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else if(Fs < 40000) /* 32 kHz */ 327885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 328885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[0] = QCONST16(0.7799987793f, 15); 329885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[1] = -QCONST16(0.1000061035f, 15); 330885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[2] = QCONST16(0.7499771125f, SIG_SHIFT); /* exact 1/preemph[3] */ 331885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[3] = QCONST16(1.3333740234f, 13); 332885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else /* 48 kHz */ 333885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 334885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[0] = QCONST16(0.8500061035f, 15); 335885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[1] = QCONST16(0.0f, 15); 336885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[2] = QCONST16(1.f, SIG_SHIFT); 337885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->preemph[3] = QCONST16(1.f, 13); 338885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 339885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 340885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->maxLM = LM; 341885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->nbShortMdcts = 1<<LM; 342885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->shortMdctSize = frame_size/mode->nbShortMdcts; 343885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org res = (mode->Fs+mode->shortMdctSize)/(2*mode->shortMdctSize); 344885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 345885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->eBands = compute_ebands(Fs, mode->shortMdctSize, res, &mode->nbEBands); 346885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (mode->eBands==NULL) 347885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org goto failure; 348885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 349885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->effEBands = mode->nbEBands; 350885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org while (mode->eBands[mode->effEBands] > mode->shortMdctSize) 351885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->effEBands--; 352885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 353885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Overlap must be divisible by 4 */ 354885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->overlap = ((mode->shortMdctSize>>2)<<2); 355885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 356885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org compute_allocation_table(mode); 357885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (mode->allocVectors==NULL) 358885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org goto failure; 359885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 360885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org window = (opus_val16*)opus_alloc(mode->overlap*sizeof(opus_val16)); 361885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (window==NULL) 362885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org goto failure; 363885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 364885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifndef FIXED_POINT 365885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=0;i<mode->overlap;i++) 366885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org window[i] = Q15ONE*sin(.5*M_PI* sin(.5*M_PI*(i+.5)/mode->overlap) * sin(.5*M_PI*(i+.5)/mode->overlap)); 367885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#else 368885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=0;i<mode->overlap;i++) 369885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org window[i] = MIN32(32767,floor(.5+32768.*sin(.5*M_PI* sin(.5*M_PI*(i+.5)/mode->overlap) * sin(.5*M_PI*(i+.5)/mode->overlap)))); 370885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 371885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->window = window; 372885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 373885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org logN = (opus_int16*)opus_alloc(mode->nbEBands*sizeof(opus_int16)); 374885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (logN==NULL) 375885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org goto failure; 376885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 377885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=0;i<mode->nbEBands;i++) 378885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org logN[i] = log2_frac(mode->eBands[i+1]-mode->eBands[i], BITRES); 379885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->logN = logN; 380885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 381885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org compute_pulse_cache(mode, mode->maxLM); 382885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 383885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (clt_mdct_init(&mode->mdct, 2*mode->shortMdctSize*mode->nbShortMdcts, 384885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org mode->maxLM) == 0) 385885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org goto failure; 386885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 387885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (error) 388885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org *error = OPUS_OK; 389885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 390885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return mode; 391885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgfailure: 392885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (error) 393885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org *error = OPUS_ALLOC_FAIL; 394885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (mode!=NULL) 395885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_custom_mode_destroy(mode); 396885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return NULL; 397885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif /* !CUSTOM_MODES */ 398885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 399885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 400885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifdef CUSTOM_MODES 401885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgvoid opus_custom_mode_destroy(CELTMode *mode) 402885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org{ 403885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (mode == NULL) 404885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return; 405885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifndef CUSTOM_MODES_ONLY 406885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 407885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org int i; 408885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for (i=0;i<TOTAL_MODES;i++) 409885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 410885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if (mode == static_mode_list[i]) 411885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org { 412885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return; 413885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 414885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 415885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 416885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif /* CUSTOM_MODES_ONLY */ 417885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_free((opus_int16*)mode->eBands); 418885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_free((opus_int16*)mode->allocVectors); 419885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 420885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_free((opus_val16*)mode->window); 421885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_free((opus_int16*)mode->logN); 422885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 423885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_free((opus_int16*)mode->cache.index); 424885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_free((unsigned char*)mode->cache.bits); 425885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_free((unsigned char*)mode->cache.caps); 426885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org clt_mdct_clear(&mode->mdct); 427885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 428885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_free((CELTMode *)mode); 429885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 430885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 431