save_gain_values(lame_internal_flags * gfc)
{
SessionConfig_t const *const cfg = &gfc->cfg;
RpgStateVar_t const *const rsv = &gfc->sv_rpg;
RpgResult_t *const rov = &gfc->ov_rpg;
/* save the ReplayGain value */
if (cfg->findReplayGain) {
FLOAT const RadioGain = (FLOAT) GetTitleGain(rsv->rgdata);
if (NEQ(RadioGain, GAIN_NOT_ENOUGH_SAMPLES)) {
rov->RadioGain = (int) floor(RadioGain * 10.0 + 0.5); /* round to nearest */
}
else {
rov->RadioGain = 0;
}
}
/* find the gain and scale change required for no clipping */
if (cfg->findPeakSample) {
rov->noclipGainChange = (int) ceil(log10(rov->PeakSample / 32767.0) * 20.0 * 10.0); /* round up */
if (rov->noclipGainChange > 0) { /* clipping occurs */
rov->noclipScale = floor((32767.0f / rov->PeakSample) * 100.0f) / 100.0f; /* round down */
}
else /* no clipping */
rov->noclipScale = -1.0f;
}
}
void grabbag__replaygain_get_title(float *gain, float *peak)
{
*gain = (float)GetTitleGain();
*peak = (float)title_peak_;
title_peak_ = 0.0;
}
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;
}
double GetRadioGain(){
return GetTitleGain();
}
