Chris@1: /********************************************************************
Chris@1:  *                                                                  *
Chris@1:  * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
Chris@1:  * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
Chris@1:  * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
Chris@1:  * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
Chris@1:  *                                                                  *
Chris@1:  * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007             *
Chris@1:  * by the Xiph.Org Foundation http://www.xiph.org/                  *
Chris@1:  *                                                                  *
Chris@1:  ********************************************************************
Chris@1: 
Chris@1:  function: vorbis coded test suite using vorbisfile
Chris@1:  last mod: $Id: test.c 13293 2007-07-24 00:09:47Z erikd $
Chris@1: 
Chris@1:  ********************************************************************/
Chris@1: 
Chris@1: #include <stdio.h>
Chris@1: #include <stdlib.h>
Chris@1: #include <math.h>
Chris@1: 
Chris@1: #include "util.h"
Chris@1: #include "write_read.h"
Chris@1: 
Chris@1: #define DATA_LEN        2048
Chris@1: 
Chris@1: #define MAX(a,b)        ((a) > (b) ? (a) : (b))
Chris@1: 
Chris@1: 
Chris@1: static int check_output (const float * data_in, unsigned len, float allowable);
Chris@1: 
Chris@1: int
Chris@1: main(void){
Chris@1:   static float data_out [DATA_LEN] ;
Chris@1:   static float data_in [DATA_LEN] ;
Chris@1: 
Chris@1:   /* Do safest and most used sample rates first. */
Chris@1:   int sample_rates [] = { 44100, 48000, 32000, 22050, 16000, 96000 } ;
Chris@1:   unsigned k ;
Chris@1:   int errors = 0 ;
Chris@1:   int ch;
Chris@1: 
Chris@1:   gen_windowed_sine (data_out, ARRAY_LEN (data_out), 0.95);
Chris@1: 
Chris@1:   for(ch=1;ch<=8;ch++){
Chris@1:     float q=-.05;
Chris@1:     printf("\nTesting %d channel%s\n\n",ch,ch==1?"":"s");
Chris@1:     while(q<1.){
Chris@1:       for (k = 0 ; k < ARRAY_LEN (sample_rates); k ++) {
Chris@1:         char filename [64] ;
Chris@1:         snprintf (filename, sizeof (filename), "vorbis_%dch_q%.1f_%u.ogg", ch,q*10,sample_rates [k]);
Chris@1: 
Chris@1:         printf ("    %-20s : ", filename);
Chris@1:         fflush (stdout);
Chris@1: 
Chris@1:         /* Set to know value. */
Chris@1:         set_data_in (data_in, ARRAY_LEN (data_in), 3.141);
Chris@1: 
Chris@1:         write_vorbis_data_or_die (filename, sample_rates [k], q, data_out, ARRAY_LEN (data_out),ch);
Chris@1:         read_vorbis_data_or_die (filename, sample_rates [k], data_in, ARRAY_LEN (data_in));
Chris@1: 
Chris@1:         if (check_output (data_in, ARRAY_LEN (data_in), (.15f - .1f*q)) != 0)
Chris@1:           errors ++ ;
Chris@1:         else {
Chris@1:           puts ("ok");
Chris@1:           remove (filename);
Chris@1:         }
Chris@1:       }
Chris@1:       q+=.1;
Chris@1:     }
Chris@1:   }
Chris@1: 
Chris@1:   if (errors)
Chris@1:     exit (1);
Chris@1: 
Chris@1:   return 0;
Chris@1: }
Chris@1: 
Chris@1: static int
Chris@1: check_output (const float * data_in, unsigned len, float allowable)
Chris@1: {
Chris@1:   float max_abs = 0.0 ;
Chris@1:   unsigned k ;
Chris@1: 
Chris@1:   for (k = 0 ; k < len ; k++) {
Chris@1:     float temp = fabs (data_in [k]);
Chris@1:     max_abs = MAX (max_abs, temp);
Chris@1:   }
Chris@1: 
Chris@1:   if (max_abs < 0.95-allowable) {
Chris@1:     printf ("Error : max_abs (%f) too small.\n", max_abs);
Chris@1:     return 1 ;
Chris@1:   } else if (max_abs > .95+allowable) {
Chris@1:     printf ("Error : max_abs (%f) too big.\n", max_abs);
Chris@1:     return 1 ;
Chris@1:   }
Chris@1: 
Chris@1:   return 0 ;
Chris@1: }
Chris@1: