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Refactoring jitter buffer

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Features are:
 * Packet based buffer
 * Random in, first out
 * Adaptive delay compensation (voice)
 * Fixed delay (data, optionally MODEM/FAX)
 * Interpolation of missing frames
 * Any sample size
This commit is contained in:
Andreas Eversberg
2022-07-31 07:55:14 +02:00
parent 4fc92eba45
commit 2b7efedc48
42 changed files with 544 additions and 206 deletions
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6
src/nmt/nmt.c
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@@ -1954,7 +1954,7 @@ void call_down_release(int callref, int __attribute__((unused)) cause)
}
/* Receive audio from call instance. */
void call_down_audio(int callref, sample_t *samples, int count)
void call_down_audio(int callref, uint16_t sequence, uint32_t timestamp, uint32_t ssrc, sample_t *samples, int count)
{
transaction_t *trans;
nmt_t *nmt;
@@ -1967,11 +1967,9 @@ void call_down_audio(int callref, sample_t *samples, int count)
return;
if (nmt->dsp_mode == DSP_MODE_AUDIO || nmt->dsp_mode == DSP_MODE_DTMF) {
sample_t up[(int)((double)count * nmt->sender.srstate.factor + 0.5) + 10];
if (nmt->compandor)
compress_audio(&nmt->cstate, samples, count);
count = samplerate_upsample(&nmt->sender.srstate, samples, count, up);
jitter_save(&nmt->sender.dejitter, up, count);
jitter_save(&nmt->sender.dejitter, samples, count, 1, sequence, timestamp, ssrc);
}
}