int IOopen (char *kind, char *name, char *mode, char *fmt) {
io_t *p;
int type;
char *path, *command;
int i;
int count = 0;
if (strcmp (kind, "file") == 0)
type = IO_FILE;
else if (strcmp (kind, "pipe") == 0)
type = IO_PIPE;
else
return -1;
for (i = 0; i < ion; i++)
if (!iop[i].inuse)
break;
if (i == ion) {
iop = Marraygrow (iop, (long) (ion + IOINCR) * IOSIZE);
for (i = ion + IOINCR - 1; i >= ion; i--)
iop[i].inuse = FALSE;
i++, ion += IOINCR;
}
p = &iop[i];
p->type = type;
if (!(p->buf = malloc (IOBUFSIZE)))
panic1 (POS, "IOopen", "malloc failed");
p->buf[0] = 0;
switch (type) {
case IO_FILE:
if (!(p->ifp = p->ofp = fopen (name, mode))) {
path = buildpath (name, FALSE);
if (!path || !(p->ifp = p->ofp = fopen (path, mode)))
return -1;
}
break;
case IO_PIPE:
if (!fmt)
fmt = "%e";
if (
!(path = buildpath (name, TRUE)) ||
!(command = buildcommand (path, NULL, -1, -1, fmt))
)
return -1;
pipeopen (command, &p->ifp, &p->ofp, &p->pid);
if (!p->ifp || !p->ofp)
return -1;
break;
}
p->inuse = TRUE;
return i;
}
static void
CalcReplayGain ( const char* filename, gain_info_t* G )
{
FILE* fp;
float buffl [NO];
float buffr [NO];
Int16_t buff [NO] [2];
size_t i;
size_t len;
size_t lastlen = 0;
unsigned int max = 0;
float level;
float mult;
if ((fp = pipeopen ( "mppdec --silent --scale 0.5 --gain 0 --raw - - < #", filename)) == NULL) {
stderr_printf ( "Can't decode '%s'\n", filename );
exit (9);
}
memset ( buff, 0, sizeof(buff) );
G->Silence = 0;
lastlen = len = fread (buff, 4, NO, fp);
for ( i = 0; i < len; i++ ) {
buffl [i] = 2. * buff [i] [0];
buffr [i] = 2. * buff [i] [1];
if ( abs(buff[i][0]) > max ) max = abs(buff[i][0]);
if ( abs(buff[i][1]) > max ) max = abs(buff[i][1]);
}
AnalyzeSamples ( buffl, buffr, len, 2 );
level = 0.;
mult = 1.;
for ( i = 0; i < len; i++ ) {
level += mult * (buff [i] [0] * buff [i] [0] + buff [i] [1] * buff [i] [1]);
mult *= 0.95;
}
level = 2*sqrt(level * 0.05);
if ( level > LEVEL_THR )
G->Silence |= 2;
sh ( NULL, level );
while (( len = fread (buff, 4, NO, fp) ) > 0 ) {
lastlen = len;
for ( i = 0; i < len; i++ ) {
buffl [i] = 2. * buff [i] [0];
buffr [i] = 2. * buff [i] [1];
if ( abs(buff[i][0]) > max ) max = abs(buff[i][0]);
if ( abs(buff[i][1]) > max ) max = abs(buff[i][1]);
}
AnalyzeSamples ( buffl, buffr, len, 2 );
}
level = 0.;
mult = 1.;
for ( i = 1; i <= NO; i++ ) {
int idx = (lastlen + NO - i) % NO;
level += mult * (buff [idx] [0] * buff [idx] [0] + buff [idx] [1] * buff [idx] [1]);
mult *= 0.95;
}
level = 2*sqrt(level * 0.05);
if ( level > LEVEL_THR )
G->Silence |= 1;
sh(filename,level);
PCLOSE (fp);
#if 0
GetTitleDynamics ();
#endif
G -> FileName = filename;
G -> TitleGain = GetTitleGain ();
G -> TitlePeak = 2 * max + 1;
G -> AlbumGain = GetAlbumGain ();
G -> AlbumPeak = G->AlbumPeak < G->TitlePeak ? G->TitlePeak : G->AlbumPeak;
return;
}
