Line data    Source code

       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             :  ********************************************************************
      12             : 
      13             :  function: single-block PCM analysis mode dispatch
      14             :  last mod: $Id$
      15             : 
      16             :  ********************************************************************/
      17             : 
      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"
      28             : 
      29             : /* decides between modes, dispatches to the appropriate mapping. */
      30           0 : int vorbis_analysis(vorbis_block *vb, ogg_packet *op){
      31             :   int ret,i;
      32           0 :   vorbis_block_internal *vbi=vb->internal;
      33             : 
      34           0 :   vb->glue_bits=0;
      35           0 :   vb->time_bits=0;
      36           0 :   vb->floor_bits=0;
      37           0 :   vb->res_bits=0;
      38             : 
      39             :   /* first things first.  Make sure encode is ready */
      40           0 :   for(i=0;i<PACKETBLOBS;i++)
      41           0 :     oggpack_reset(vbi->packetblob[i]);
      42             : 
      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 */
      46             : 
      47           0 :   if((ret=_mapping_P[0]->forward(vb)))
      48           0 :     return(ret);
      49             : 
      50           0 :   if(op){
      51           0 :     if(vorbis_bitrate_managed(vb))
      52             :       /* The app is using a bitmanaged mode... but not using the
      53             :          bitrate management interface. */
      54           0 :       return(OV_EINVAL);
      55             : 
      56           0 :     op->packet=oggpack_get_buffer(&vb->opb);
      57           0 :     op->bytes=oggpack_bytes(&vb->opb);
      58           0 :     op->b_o_s=0;
      59           0 :     op->e_o_s=vb->eofflag;
      60           0 :     op->granulepos=vb->granulepos;
      61           0 :     op->packetno=vb->sequence; /* for sake of completeness */
      62             :   }
      63           0 :   return(0);
      64             : }
      65             : 
      66             : #ifdef ANALYSIS
      67             : int analysis_noisy=1;
      68             : 
      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];
      74             : 
      75             :   sprintf(buffer,"%s_%d.m",base,i);
      76             :   of=fopen(buffer,"w");
      77             : 
      78             :   if(!of)perror("failed to open data dump file");
      79             : 
      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);
      89             : 
      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             : }
     103             : 
     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             : }
     108             : 
     109             : #endif
     110             : 
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