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feature: Add 2.5 ms and 5 ms LC3 plus frame durations

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fix: Check TNS bitstream data

fix: LTPF Activation with 2.5 ms frame sizes
This commit is contained in:
anonymix007
2023-12-13 10:56:20 -08:00
committed by Antoine Soulier
parent a75f187e00
commit 149cb6537e
43 changed files with 3095 additions and 1628 deletions
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src/energy.c
+7 -23
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@@ -26,30 +26,17 @@
bool lc3_energy_compute(
enum lc3_dt dt, enum lc3_srate sr, const float *x, float *e)
{
static const int n1_table[LC3_NUM_DT][LC3_NUM_SRATE] = {
[LC3_DT_7M5] = { 56, 34, 27, 24, 22 },
[LC3_DT_10M] = { 49, 28, 23, 20, 18 },
};
/* Mean the square of coefficients within each band */
/* First bands are 1 coefficient width */
int nb = lc3_num_bands[dt][sr];
const uint16_t *lim = lc3_band_lim[dt][sr];
int n1 = n1_table[dt][sr];
float e_sum[2] = { 0, 0 };
int iband;
int iband_h = nb - (const int []){
[LC3_DT_2M5] = 2, [LC3_DT_5M ] = 3,
[LC3_DT_7M5] = 4, [LC3_DT_10M] = 2 }[dt];
for (iband = 0; iband < n1; iband++) {
*e = x[iband] * x[iband];
e_sum[0] += *(e++);
}
/* Mean the square of coefficients within each band,
* note that 7.5ms 8KHz frame has more bands than samples */
int nb = LC3_MIN(LC3_NUM_BANDS, LC3_NS(dt, sr));
int iband_h = nb - 2*(2 - dt);
const int *lim = lc3_band_lim[dt][sr];
for (int i = lim[iband]; iband < nb; iband++) {
for (int iband = 0, i = lim[iband]; iband < nb; iband++) {
int ie = lim[iband+1];
int n = ie - i;
@@ -61,9 +48,6 @@ bool lc3_energy_compute(
e_sum[iband >= iband_h] += *(e++);
}
for (; iband < LC3_NUM_BANDS; iband++)
*(e++) = 0;
/* Return the near nyquist flag */
return e_sum[1] > 30 * e_sum[0];