The Tor Browser: media/libvorbis/lib/envelope.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /********************************************************************

     2  *                                                                  *

     3  * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *

     4  * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *

     5  * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *

     6  * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *

     7  *                                                                  *

     8  * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009             *

     9  * by the Xiph.Org Foundation http://www.xiph.org/                  *

    10  *                                                                  *

    11  ********************************************************************

    13  function: PCM data envelope analysis and manipulation

    14  last mod: $Id: envelope.h 16227 2009-07-08 06:58:46Z xiphmont $

    16  ********************************************************************/

    18 #ifndef _V_ENVELOPE_

    19 #define _V_ENVELOPE_

    21 #include "mdct.h"

    23 #define VE_PRE    16

    24 #define VE_WIN    4

    25 #define VE_POST   2

    26 #define VE_AMP    (VE_PRE+VE_POST-1)

    28 #define VE_BANDS  7

    29 #define VE_NEARDC 15

    31 #define VE_MINSTRETCH 2   /* a bit less than short block */

    32 #define VE_MAXSTRETCH 12  /* one-third full block */

    34 typedef struct {

    35   float ampbuf[VE_AMP];

    36   int   ampptr;

    38   float nearDC[VE_NEARDC];

    39   float nearDC_acc;

    40   float nearDC_partialacc;

    41   int   nearptr;

    43 } envelope_filter_state;

    45 typedef struct {

    46   int begin;

    47   int end;

    48   float *window;

    49   float total;

    50 } envelope_band;

    52 typedef struct {

    53   int ch;

    54   int winlength;

    55   int searchstep;

    56   float minenergy;

    58   mdct_lookup  mdct;

    59   float       *mdct_win;

    61   envelope_band          band[VE_BANDS];

    62   envelope_filter_state *filter;

    63   int   stretch;

    65   int                   *mark;

    67   long storage;

    68   long current;

    69   long curmark;

    70   long cursor;

    71 } envelope_lookup;

    73 extern void _ve_envelope_init(envelope_lookup *e,vorbis_info *vi);

    74 extern void _ve_envelope_clear(envelope_lookup *e);

    75 extern long _ve_envelope_search(vorbis_dsp_state *v);

    76 extern void _ve_envelope_shift(envelope_lookup *e,long shift);

    77 extern int  _ve_envelope_mark(vorbis_dsp_state *v);

    80 #endif

The Tor Browser / file revision

media/libvorbis/lib/envelope.h@97036ab72558

media/libvorbis/lib/envelope.h