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The Tor Browser
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modes.h (2665B)

      1 /* Copyright (c) 2007-2008 CSIRO
      2   Copyright (c) 2007-2009 Xiph.Org Foundation
      3   Copyright (c) 2008 Gregory Maxwell
      4   Written by Jean-Marc Valin and Gregory Maxwell */
      5 /*
      6   Redistribution and use in source and binary forms, with or without
      7   modification, are permitted provided that the following conditions
      8   are met:
      9 
     10   - Redistributions of source code must retain the above copyright
     11   notice, this list of conditions and the following disclaimer.
     12 
     13   - Redistributions in binary form must reproduce the above copyright
     14   notice, this list of conditions and the following disclaimer in the
     15   documentation and/or other materials provided with the distribution.
     16 
     17   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     18   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     19   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     20   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
     21   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     22   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     23   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     24   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     25   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     26   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     27   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 */
     29 
     30 #ifndef MODES_H
     31 #define MODES_H
     32 
     33 #include "opus_types.h"
     34 #include "celt.h"
     35 #include "arch.h"
     36 #include "mdct.h"
     37 #include "entenc.h"
     38 #include "entdec.h"
     39 
     40 #define MAX_PERIOD 1024
     41 
     42 #define DEC_PITCH_BUF_SIZE 2048
     43 
     44 typedef struct {
     45   int size;
     46   const opus_int16 *index;
     47   const unsigned char *bits;
     48   const unsigned char *caps;
     49 } PulseCache;
     50 
     51 /** Mode definition (opaque)
     52 @brief Mode definition
     53 */
     54 struct OpusCustomMode {
     55   opus_int32 Fs;
     56   int          overlap;
     57 
     58   int          nbEBands;
     59   int          effEBands;
     60   opus_val16    preemph[4];
     61   const opus_int16   *eBands;   /**< Definition for each "pseudo-critical band" */
     62 
     63   int         maxLM;
     64   int         nbShortMdcts;
     65   int         shortMdctSize;
     66 
     67   int          nbAllocVectors; /**< Number of lines in the matrix below */
     68   const unsigned char   *allocVectors;   /**< Number of bits in each band for several rates */
     69   const opus_int16 *logN;
     70 
     71   const celt_coef *window;
     72   mdct_lookup mdct;
     73   PulseCache cache;
     74 #ifdef ENABLE_QEXT
     75   PulseCache qext_cache;
     76 #endif
     77 };
     78 
     79 #ifdef ENABLE_QEXT
     80 #define QEXT_PACKET_SIZE_CAP 3825
     81 #define NB_QEXT_BANDS 14
     82 void compute_qext_mode(CELTMode *qext, const CELTMode *m);
     83 #endif
     84 
     85 #endif