public boolean vorbis_encode_setup_managed(
vorbis_info _vi,
int channels,
int rate,
int max_bitrate,
int nominal_bitrate,
int min_bitrate) {
vi = _vi;
float tnominal = new Integer(nominal_bitrate).floatValue();
if (nominal_bitrate <= 0.) {
if (max_bitrate > 0.) {
if (min_bitrate > 0.)
nominal_bitrate = new Double((max_bitrate + min_bitrate) * .5).intValue();
else nominal_bitrate = new Double(max_bitrate * .875).intValue();
} else {
if (min_bitrate > 0.) nominal_bitrate = min_bitrate;
else return false;
}
}
if (!get_setup_template(channels, rate, nominal_bitrate, 1)) {
System.out.println(
"Unable to find setup template - "
+ channels
+ " channels, "
+ rate
+ " rate, "
+ nominal_bitrate
+ " nominal_bitrate");
return false;
}
vorbis_encode_setup_setting(channels, rate);
highlevel_encode_setup hi = vi.codec_setup.hi;
// initialize management with sane defaults
hi.managed = 1;
hi.bitrate_min = min_bitrate;
hi.bitrate_max = max_bitrate;
hi.bitrate_av = new Float(tnominal).intValue();
hi.bitrate_av_damp = 1.5f;
hi.bitrate_reservoir = nominal_bitrate * 2;
hi.bitrate_reservoir_bias = .1f; // bias toward hoarding bits
return true;
}
public Object vorbis_encode_ctl(vorbis_info _vi, int number, Object arg) {
if (_vi == null) return false;
codec_setup_info ci = vi.codec_setup;
highlevel_encode_setup hi = ci.hi;
int setp = (number & 0xf); // a read request has a low nibble of 0
if ((setp > 0) && (hi.set_in_stone > 0)) return false;
switch (number) {
// now deprecated *****************
/*
case OV_ECTL_RATEMANAGE_GET: {
ovectl_ratemanage_arg ai= ( ovectl_ratemanage_arg )arg;
ai.management_active=hi.managed;
ai.bitrate_hard_window=ai.bitrate_av_window=(double)hi.bitrate_reservoir/vi.rate;
ai.bitrate_av_window_center=1.;
ai.bitrate_hard_min=hi.bitrate_min;
ai.bitrate_hard_max=hi.bitrate_max;
ai.bitrate_av_lo=hi.bitrate_av;
ai.bitrate_av_hi=hi.bitrate_av;
}
return true;
// now deprecated *****************
case OV_ECTL_RATEMANAGE_SET: {
ovectl_ratemanage_arg ai= ( ovectl_ratemanage_arg )arg;
if ( ai == null ) {
hi.managed=0;
} else {
hi.managed=ai.management_active;
vorbis_encode_ctl( vi, OV_ECTL_RATEMANAGE_AVG, arg );
vorbis_encode_ctl( vi, OV_ECTL_RATEMANAGE_HARD, arg );
}
}
return true;
// now deprecated *****************
case OV_ECTL_RATEMANAGE_AVG: {
ovectl_ratemanage_arg ai= ( ovectl_ratemanage_arg )arg;
if (ai == null) {
hi.bitrate_av=0;
} else {
hi.bitrate_av=(ai.bitrate_av_lo+ai.bitrate_av_hi)*.5;
}
}
return true;
// now deprecated *****************
case OV_ECTL_RATEMANAGE_HARD: {
ovectl_ratemanage_arg ai= ( ovectl_ratemanage_arg )arg;
if (ai == null ) {
hi.bitrate_min=0;
hi.bitrate_max=0;
} else {
hi.bitrate_min=ai.bitrate_hard_min;
hi.bitrate_max=ai.bitrate_hard_max;
hi.bitrate_reservoir=ai.bitrate_hard_window*(hi.bitrate_max+hi.bitrate_min)*.5;
}
if ( hi.bitrate_reservoir < 128.f )
hi.bitrate_reservoir=128;
}
return true;
*/
// replacement ratemanage interface
case OV_ECTL_RATEMANAGE2_GET:
{
ovectl_ratemanage2_arg ai = (ovectl_ratemanage2_arg) arg;
if (ai == null) return false;
ai.management_active = hi.managed;
ai.bitrate_limit_min_kbps = hi.bitrate_min / 1000;
ai.bitrate_limit_max_kbps = hi.bitrate_max / 1000;
ai.bitrate_average_kbps = hi.bitrate_av / 1000;
ai.bitrate_average_damping = hi.bitrate_av_damp;
ai.bitrate_limit_reservoir_bits = hi.bitrate_reservoir;
ai.bitrate_limit_reservoir_bias = hi.bitrate_reservoir_bias;
return ai;
}
case OV_ECTL_RATEMANAGE2_SET:
{
ovectl_ratemanage2_arg ai = (ovectl_ratemanage2_arg) arg;
if (ai == null) {
hi.managed = 0;
} else {
// sanity check; only catch invariant violations
if (ai.bitrate_limit_min_kbps > 0
&& ai.bitrate_average_kbps > 0
&& ai.bitrate_limit_min_kbps > ai.bitrate_average_kbps) return false;
if (ai.bitrate_limit_max_kbps > 0
&& ai.bitrate_average_kbps > 0
&& ai.bitrate_limit_max_kbps < ai.bitrate_average_kbps) return false;
if (ai.bitrate_limit_min_kbps > 0
&& ai.bitrate_limit_max_kbps > 0
&& ai.bitrate_limit_min_kbps > ai.bitrate_limit_max_kbps) return false;
if (ai.bitrate_average_damping <= 0.) return false;
if (ai.bitrate_limit_reservoir_bits < 0) return false;
if (ai.bitrate_limit_reservoir_bias < 0.) return false;
if (ai.bitrate_limit_reservoir_bias > 1.) return false;
hi.managed = ai.management_active;
hi.bitrate_min = ai.bitrate_limit_min_kbps * 1000;
hi.bitrate_max = ai.bitrate_limit_max_kbps * 1000;
hi.bitrate_av = ai.bitrate_average_kbps * 1000;
hi.bitrate_av_damp = ai.bitrate_average_damping;
hi.bitrate_reservoir = ai.bitrate_limit_reservoir_bits;
hi.bitrate_reservoir_bias = ai.bitrate_limit_reservoir_bias;
}
}
return true;
case OV_ECTL_LOWPASS_GET:
{
return hi.lowpass_kHz;
}
case OV_ECTL_LOWPASS_SET:
{
hi.lowpass_kHz = (Float) arg;
if (hi.lowpass_kHz < 2.f) hi.lowpass_kHz = 2.f;
if (hi.lowpass_kHz > 99.f) hi.lowpass_kHz = 99.f;
}
return true;
case OV_ECTL_IBLOCK_GET:
{
return hi.impulse_noisetune;
}
case OV_ECTL_IBLOCK_SET:
{
hi.impulse_noisetune = (Float) arg;
if (hi.impulse_noisetune > 0.f) hi.impulse_noisetune = 0.f;
if (hi.impulse_noisetune < -15.f) hi.impulse_noisetune = -15.f;
}
return true;
}
return true;
}