rlm@23: #include <stdio.h>
rlm@23: #include <assert.h>
rlm@23: #include <string.h>
rlm@23: #include <sndfile.h>
rlm@23: #include <stdlib.h>
rlm@23: 
rlm@23: 
rlm@23: 
rlm@23: int
rlm@23: do_check (int drop, int argc, char * argv [])
rlm@23: {
rlm@23:   int margin_of_error;
rlm@23:   SNDFILE* goldenWavFile;
rlm@23:   SNDFILE* outputWavFile;
rlm@23:   SF_INFO goldenInfo ;
rlm@23:   SF_INFO outputInfo ;
rlm@23:   short int buffA;
rlm@23:   short int buffB;
rlm@23: 
rlm@23:   memset (&goldenInfo, 0, sizeof (goldenInfo)) ;
rlm@23:   memset (&outputInfo, 0, sizeof (outputInfo)) ;
rlm@23: 
rlm@23:   margin_of_error = atoi(argv[1]);
rlm@23: 
rlm@23:   printf("Checking for Margin of Error %d\n", margin_of_error);
rlm@23: 
rlm@23:   goldenWavFile = sf_open(argv[2], SFM_READ, &goldenInfo);
rlm@23:   if (goldenWavFile == NULL){      
rlm@23:     printf ("\nERROR : failed Not able to open wav file named '%s' : %s/\n", argv[2], sf_strerror (NULL)) ;
rlm@23:     exit (1) ;
rlm@23:   }
rlm@23: 
rlm@23:   outputWavFile = sf_open(argv[3], SFM_READ, &outputInfo);
rlm@23:   if (outputWavFile == NULL){      
rlm@23:     printf ("\nERROR : failed Not able to open wav file named '%s' : %s/\n", argv[3], sf_strerror (NULL)) ;
rlm@23:     exit (1) ;
rlm@23:   }
rlm@23:  
rlm@23:   int max_diff = 0;
rlm@23: 
rlm@23:   // it is possible that the modified pipeline might introduce a few
rlm@23:   // dummy tokens at the beginning of the stream, we'll just drop them
rlm@23:   for(int i = 0; i < drop; i++){
rlm@23:     sf_read_short(outputWavFile, &buffB, 1);
rlm@23:   }
rlm@23: 
rlm@23:   int count=0;
rlm@23: 
rlm@23:   while(sf_read_short(goldenWavFile, &buffA, 1)==1){
rlm@23: 
rlm@23:     if(sf_read_short(outputWavFile, &buffB, 1) != 1){
rlm@23:       // the streams are of different length
rlm@23:       printf("failed (length)\n");
rlm@23:       exit(0);
rlm@23:     }
rlm@23:     
rlm@23:     int td =  (buffA > buffB) ? (buffA - buffB) : (buffB - buffA);
rlm@23:     max_diff = (td > max_diff) ? td : max_diff;
rlm@23:     
rlm@23:     if(max_diff > margin_of_error){
rlm@23:       printf("max_diff %x on drop %d (count %d)\n", max_diff, drop,count);
rlm@23:       return 1;
rlm@23:     }
rlm@23: 
rlm@23:     count++;
rlm@23:   }
rlm@23: 
rlm@23:   printf("max_diff %x on drop %d\n", max_diff, drop);
rlm@23: 
rlm@23:   if(max_diff > margin_of_error)
rlm@23:     return 1;
rlm@23:   else
rlm@23:     return 0;
rlm@23: }
rlm@23: 
rlm@23: int
rlm@23: main(int argc, char* argv[])
rlm@23: {
rlm@23:   for(int drop = 0; drop < 10; drop++){
rlm@23:     if(do_check(drop, argc, argv)==0){
rlm@23:       printf("passed on drop %d\n", drop);
rlm@23:       exit(0);
rlm@23:     }
rlm@23:   }
rlm@23:   printf("failed\n");
rlm@23:   exit(1);
rlm@23: }