Mercurial > pygar

     1 #include <stdio.h>

     2 #include <assert.h>

     3 #include <string.h>

     4 #include <sndfile.h>

     5 #include <stdlib.h>

     6 

     7 

     8 

     9 int

    10 do_check (int drop, int argc, char * argv [])

    11 {

    12   int margin_of_error;

    13   SNDFILE* goldenWavFile;

    14   SNDFILE* outputWavFile;

    15   SF_INFO goldenInfo ;

    16   SF_INFO outputInfo ;

    17   short int buffA;

    18   short int buffB;

    19 

    20   memset (&goldenInfo, 0, sizeof (goldenInfo)) ;

    21   memset (&outputInfo, 0, sizeof (outputInfo)) ;

    22 

    23   margin_of_error = atoi(argv[1]);

    24 

    25   printf("Checking for Margin of Error %d\n", margin_of_error);

    26 

    27   goldenWavFile = sf_open(argv[2], SFM_READ, &goldenInfo);

    28   if (goldenWavFile == NULL){      

    29     printf ("\nERROR : failed Not able to open wav file named '%s' : %s/\n", argv[2], sf_strerror (NULL)) ;

    30     exit (1) ;

    31   }

    32 

    33   outputWavFile = sf_open(argv[3], SFM_READ, &outputInfo);

    34   if (outputWavFile == NULL){      

    35     printf ("\nERROR : failed Not able to open wav file named '%s' : %s/\n", argv[3], sf_strerror (NULL)) ;

    36     exit (1) ;

    37   }

    38  

    39   int max_diff = 0;

    40 

    41   // it is possible that the modified pipeline might introduce a few

    42   // dummy tokens at the beginning of the stream, we'll just drop them

    43   for(int i = 0; i < drop; i++){

    44     sf_read_short(outputWavFile, &buffB, 1);

    45   }

    46 

    47   int count=0;

    48 

    49   while(sf_read_short(goldenWavFile, &buffA, 1)==1){

    50 

    51     if(sf_read_short(outputWavFile, &buffB, 1) != 1){

    52       // the streams are of different length

    53       printf("failed (length)\n");

    54       exit(0);

    55     }

    56     

    57     int td =  (buffA > buffB) ? (buffA - buffB) : (buffB - buffA);

    58     max_diff = (td > max_diff) ? td : max_diff;

    59     

    60     if(max_diff > margin_of_error){

    61       printf("max_diff %x on drop %d (count %d)\n", max_diff, drop,count);

    62       return 1;

    63     }

    64 

    65     count++;

    66   }

    67 

    68   printf("max_diff %x on drop %d\n", max_diff, drop);

    69 

    70   if(max_diff > margin_of_error)

    71     return 1;

    72   else

    73     return 0;

    74 }

    75 

    76 int

    77 main(int argc, char* argv[])

    78 {

    79   for(int drop = 0; drop < 10; drop++){

    80     if(do_check(drop, argc, argv)==0){

    81       printf("passed on drop %d\n", drop);

    82       exit(0);

    83     }

    84   }

    85   printf("failed\n");

    86   exit(1);

    87 }
author	rlm
date	Tue, 04 May 2010 12:14:24 -0400
parents	90197e3375e2
children