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Fix mmap call #3

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Fix mmap call #3

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19 changes: 11 additions & 8 deletions mstest.c
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,7 @@ void audio_process( short *blocks, int len ) {
}

int main( int argc, char **argv ) {
short *data;
short *blocks;
int fd;
struct stat fdStat;
Expand All @@ -84,21 +85,23 @@ int main( int argc, char **argv ) {
return -1;
}

if( !strncmp( ( argv[1] + strlen( argv[1] - 4 ) ), ".wav", 4 ) ) {
// use a 44byte offset for .wav files to bypass header
offset = 44;
}
blocks = mmap( 0, fdStat.st_size, PROT_READ, MAP_SHARED, fd, offset );
data = mmap( 0, fdStat.st_size, PROT_READ, MAP_SHARED, fd, 0 );

if( blocks == MAP_FAILED ) {
if( data == MAP_FAILED ) {
close( fd );
perror( "Failed to map file" );
return -1;
}

audio_process( blocks, ( fdStat.st_size - offset ) / sizeof( short ) );
if( !strncmp( ( argv[1] + strlen( argv[1] - 4 ) ), ".wav", 4 ) ) {
// use a 44byte offset for .wav files to bypass header
offset = 44;
}
blocks = (short *)(data + offset);

audio_process( blocks + offset, ( fdStat.st_size - offset ) / sizeof( short ) );

if( munmap( blocks, fdStat.st_size ) == -1 ) {
if( munmap( data, fdStat.st_size ) == -1 ) {
perror( "Failed to unmap file" );
}
close( fd );
Expand Down