public void process(FilterBank filterBank) throws AACException {
final Profile profile = config.getProfile();
final SampleFrequency sf = config.getSampleFrequency();
// final ChannelConfiguration channels = config.getChannelConfiguration();
int chs = config.getChannelConfiguration().getChannelCount();
if (chs == 1 && psPresent) chs++;
final int mult = sbrPresent ? 2 : 1;
// only reallocate if needed
if (data == null || chs != data.length || (mult * config.getFrameLength()) != data[0].length)
data = new float[chs][mult * config.getFrameLength()];
int channel = 0;
Element e;
SCE_LFE scelfe;
CPE cpe;
for (int i = 0; i < elements.length && channel < chs; i++) {
e = elements[i];
if (e == null) continue;
if (e instanceof SCE_LFE) {
scelfe = (SCE_LFE) e;
channel += processSingle(scelfe, filterBank, channel, profile, sf);
} else if (e instanceof CPE) {
cpe = (CPE) e;
processPair(cpe, filterBank, channel, profile, sf);
channel += 2;
} else if (e instanceof CCE) {
// applies invquant and save the result in the CCE
((CCE) e).process();
channel++;
}
}
}
public void sendToOutput(SampleBuffer buffer) {
final boolean be = buffer.isBigEndian();
final int chs = data.length;
final int mult = (sbrPresent && config.isSBREnabled()) ? 2 : 1;
final int length = mult * config.getFrameLength();
final int freq = mult * config.getSampleFrequency().getFrequency();
byte[] b = buffer.getData();
if (b.length != chs * length * 2) b = new byte[chs * length * 2];
float[] cur;
int i, j, off;
short s;
for (i = 0; i < chs; i++) {
cur = data[i];
for (j = 0; j < length; j++) {
s = (short) Math.max(Math.min(Math.round(cur[j]), Short.MAX_VALUE), Short.MIN_VALUE);
off = (j * chs + i) * 2;
if (be) {
b[off] = (byte) ((s >> 8) & BYTE_MASK);
b[off + 1] = (byte) (s & BYTE_MASK);
} else {
b[off + 1] = (byte) ((s >> 8) & BYTE_MASK);
b[off] = (byte) (s & BYTE_MASK);
}
}
}
buffer.setData(b, freq, chs, 16, bitsRead);
}
private void decodeFIL(BitStream in, Element prev) throws AACException {
if (curFIL == MAX_ELEMENTS) throw new AACException("too much FIL elements");
if (fils[curFIL] == null) fils[curFIL] = new FIL(config.isSBRDownSampled());
fils[curFIL].decode(in, prev, config.getSampleFrequency(), config.isSBREnabled());
curFIL++;
if (prev != null && prev.isSBRPresent()) {
sbrPresent = true;
if (!psPresent && prev.getSBR().isPSUsed()) psPresent = true;
}
}