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various fixes and improvements

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This commit is contained in:
Paul Davis 2015-01-19 16:17:16 -05:00
parent cc0cd05b6b
commit ffe3f7ee6f
1 changed files with 6 additions and 16 deletions
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20
tools/sfrtest.cc
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@ -21,8 +21,6 @@ using namespace std;
SF_INFO format_info; SF_INFO format_info;
float* data = 0; float* data = 0;
bool with_sync = false;
int int
read_one (SNDFILE* sf, uint32_t nframes) read_one (SNDFILE* sf, uint32_t nframes)
{ {
@ -47,15 +45,14 @@ int
main (int argc, char* argv[]) main (int argc, char* argv[])
{ {
vector<SNDFILE*> sndfiles; vector<SNDFILE*> sndfiles;
uint32_t sample_size; uint32_t sample_size = sizeof (float);
char optstring[] = "n:b:s"; char optstring[] = "n:b:sD";
uint32_t block_size = 64 * 1024; uint32_t block_size = 64 * 1024;
uint32_t nfiles = 100; uint32_t nfiles = 100;
bool direct = false; bool direct = false;
const struct option longopts[] = { const struct option longopts[] = {
{ "nfiles", 1, 0, 'n' }, { "nfiles", 1, 0, 'n' },
{ "blocksize", 1, 0, 'b' }, { "blocksize", 1, 0, 'b' },
{ "sync", 0, 0, 's' },
{ "direct", 0, 0, 'D' }, { "direct", 0, 0, 'D' },
{ 0, 0, 0, 0 } { 0, 0, 0, 0 }
}; };
@ -77,9 +74,6 @@ main (int argc, char* argv[])
case 'b': case 'b':
block_size = atoi (optarg); block_size = atoi (optarg);
break; break;
case 's':
with_sync = true;
break;
case 'D': case 'D':
direct = true; direct = true;
break; break;
@ -136,7 +130,7 @@ main (int argc, char* argv[])
sndfiles.push_back (sf); sndfiles.push_back (sf);
} }
cout << "Discovered " << nfiles+1 << " files using " << name_template << endl; cout << "Discovered " << sndfiles.size() << " files using " << name_template << endl;
data = new float[block_size]; data = new float[block_size];
uint64_t read = 0; uint64_t read = 0;
@ -152,13 +146,9 @@ main (int argc, char* argv[])
} }
read += block_size; read += block_size;
gint64 elapsed = g_get_monotonic_time() - before; gint64 elapsed = g_get_monotonic_time() - before;
double bandwidth = (sndfiles.size() * block_size * sample_size) / (elapsed/1000000.0); double bandwidth = ((sndfiles.size() * block_size * sample_size)/1048576.0) / (elapsed/1000000.0);
double data_minutes = read / (double) (60.0 * 48000.0);
const double data_rate = sndfiles.size() * sample_size * samplerate;
stringstream ds;
ds << setprecision (1) << data_minutes;
cout << "BW @ " << read << " frames (" << ds.str() << " minutes) = " << (bandwidth/1048576.0) << " MB/sec " << bandwidth / data_rate << " x faster than necessary " << endl; printf ("BW @ %Lu %.3f seconds bandwidth %.4f MB/sec\n", read, elapsed/1000000.0, bandwidth);
} }
return 0; return 0;