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      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: vorbis coded test suite using vorbisfile
     14  last mod: $Id: test.c 13293 2007-07-24 00:09:47Z erikd $
     15 
     16  ********************************************************************/
     17 
     18 #include <stdio.h>
     19 #include <stdlib.h>
     20 #include <math.h>
     21 
     22 #include "util.h"
     23 #include "write_read.h"
     24 
     25 #define DATA_LEN        2048
     26 
     27 #define MAX(a,b)        ((a) > (b) ? (a) : (b))
     28 
     29 
     30 static int check_output (const float * data_in, unsigned len, float allowable);
     31 
     32 int
     33 main(void){
     34   static float data_out [DATA_LEN] ;
     35   static float data_in [DATA_LEN] ;
     36 
     37   /* Do safest and most used sample rates first. */
     38   int sample_rates [] = { 44100, 48000, 32000, 22050, 16000, 96000 } ;
     39   unsigned k ;
     40   int errors = 0 ;
     41   int ch;
     42 
     43   gen_windowed_sine (data_out, ARRAY_LEN (data_out), 0.95);
     44 
     45   for(ch=1;ch<=8;ch++){
     46     float q=-.05;
     47     printf("\nTesting %d channel%s\n\n",ch,ch==1?"":"s");
     48     while(q<1.){
     49       for (k = 0 ; k < ARRAY_LEN (sample_rates); k ++) {
     50         char filename [64] ;
     51         snprintf (filename, sizeof (filename), "vorbis_%dch_q%.1f_%u.ogg", ch,q*10,sample_rates [k]);
     52 
     53         printf ("    %-20s : ", filename);
     54         fflush (stdout);
     55 
     56         /* Set to know value. */
     57         set_data_in (data_in, ARRAY_LEN (data_in), 3.141);
     58 
     59         write_vorbis_data_or_die (filename, sample_rates [k], q, data_out, ARRAY_LEN (data_out),ch);
     60         read_vorbis_data_or_die (filename, sample_rates [k], data_in, ARRAY_LEN (data_in));
     61 
     62         if (check_output (data_in, ARRAY_LEN (data_in), (.15f - .1f*q)) != 0)
     63           errors ++ ;
     64         else {
     65           puts ("ok");
     66           remove (filename);
     67         }
     68       }
     69       q+=.1;
     70     }
     71   }
     72 
     73   if (errors)
     74     exit (1);
     75 
     76   return 0;
     77 }
     78 
     79 static int
     80 check_output (const float * data_in, unsigned len, float allowable)
     81 {
     82   float max_abs = 0.0 ;
     83   unsigned k ;
     84 
     85   for (k = 0 ; k < len ; k++) {
     86     float temp = fabs (data_in [k]);
     87     max_abs = MAX (max_abs, temp);
     88   }
     89 
     90   if (max_abs < 0.95-allowable) {
     91     printf ("Error : max_abs (%f) too small.\n", max_abs);
     92     return 1 ;
     93   } else if (max_abs > .95+allowable) {
     94     printf ("Error : max_abs (%f) too big.\n", max_abs);
     95     return 1 ;
     96   }
     97 
     98   return 0 ;
     99 }
    100 
    101