The Tor Browser: media/libvorbis/lib/vorbis

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 1994-2007             *

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

    10  *                                                                  *

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

    13  function: single-block PCM analysis mode dispatch

    14  last mod: $Id: analysis.c 16226 2009-07-08 06:43:49Z xiphmont $

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

    18 #include <stdio.h>

    19 #include <string.h>

    20 #include <math.h>

    21 #include <ogg/ogg.h>

    22 #include "vorbis/codec.h"

    23 #include "codec_internal.h"

    24 #include "registry.h"

    25 #include "scales.h"

    26 #include "os.h"

    27 #include "misc.h"

    29 /* decides between modes, dispatches to the appropriate mapping. */

    30 int vorbis_analysis(vorbis_block *vb, ogg_packet *op){

    31   int ret,i;

    32   vorbis_block_internal *vbi=vb->internal;

    34   vb->glue_bits=0;

    35   vb->time_bits=0;

    36   vb->floor_bits=0;

    37   vb->res_bits=0;

    39   /* first things first.  Make sure encode is ready */

    40   for(i=0;i<PACKETBLOBS;i++)

    41     oggpack_reset(vbi->packetblob[i]);

    43   /* we only have one mapping type (0), and we let the mapping code

    44      itself figure out what soft mode to use.  This allows easier

    45      bitrate management */

    47   if((ret=_mapping_P[0]->forward(vb)))

    48     return(ret);

    50   if(op){

    51     if(vorbis_bitrate_managed(vb))

    52       /* The app is using a bitmanaged mode... but not using the

    53          bitrate management interface. */

    54       return(OV_EINVAL);

    56     op->packet=oggpack_get_buffer(&vb->opb);

    57     op->bytes=oggpack_bytes(&vb->opb);

    58     op->b_o_s=0;

    59     op->e_o_s=vb->eofflag;

    60     op->granulepos=vb->granulepos;

    61     op->packetno=vb->sequence; /* for sake of completeness */

    62   }

    63   return(0);

    64 }

    66 #ifdef ANALYSIS

    67 int analysis_noisy=1;

    69 /* there was no great place to put this.... */

    70 void _analysis_output_always(char *base,int i,float *v,int n,int bark,int dB,ogg_int64_t off){

    71   int j;

    72   FILE *of;

    73   char buffer[80];

    75   sprintf(buffer,"%s_%d.m",base,i);

    76   of=fopen(buffer,"w");

    78   if(!of)perror("failed to open data dump file");

    80   for(j=0;j<n;j++){

    81     if(bark){

    82       float b=toBARK((4000.f*j/n)+.25);

    83       fprintf(of,"%f ",b);

    84     }else

    85       if(off!=0)

    86         fprintf(of,"%f ",(double)(j+off)/8000.);

    87       else

    88         fprintf(of,"%f ",(double)j);

    90     if(dB){

    91       float val;

    92       if(v[j]==0.)

    93         val=-140.;

    94       else

    95         val=todB(v+j);

    96       fprintf(of,"%f\n",val);

    97     }else{

    98       fprintf(of,"%f\n",v[j]);

    99     }

   100   }

   101   fclose(of);

   102 }

   104 void _analysis_output(char *base,int i,float *v,int n,int bark,int dB,

   105                       ogg_int64_t off){

   106   if(analysis_noisy)_analysis_output_always(base,i,v,n,bark,dB,off);

   107 }

   109 #endif

The Tor Browser / file revision

media/libvorbis/lib/vorbis_analysis.c@97036ab72558

media/libvorbis/lib/vorbis_analysis.c