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wip: MDCT, SNS in fixed point

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This commit is contained in:
Antoine Soulier
2023-04-14 14:47:31 -07:00
parent 2ce884d8ef
commit 82db8e05ae
16 changed files with 2526 additions and 2187 deletions
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31
test/sns_py.c
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@@ -92,7 +92,7 @@ static PyObject *unquantize_py(PyObject *m, PyObject *args)
PyObject *y_obj, *scf_obj;
int lfcb_idx, hfcb_idx;
int shape, gain;
float *y, *scf;
lc3_intfloat_t *y, *scf;
if (!PyArg_ParseTuple(args, "iiOii",
&lfcb_idx, &hfcb_idx, &y_obj, &shape, &gain))
@@ -107,8 +107,16 @@ static PyObject *unquantize_py(PyObject *m, PyObject *args)
scf_obj = new_1d_ptr(NPY_FLOAT, 16, &scf);
#ifdef CONFIG_FIXED_POINT
for (int i = 0; i < 16; i++) y[i] = ldexpf(((float *)y)[i], 24);
#endif
unquantize(lfcb_idx, hfcb_idx, y, shape, gain, scf);
#ifdef CONFIG_FIXED_POINT
for (int i = 0; i < 16; i++) ((float *)scf)[i] = ldexpf(scf[i], -24);
#endif
return Py_BuildValue("N", scf_obj);
}
@@ -116,7 +124,7 @@ static PyObject *spectral_shaping_py(PyObject *m, PyObject *args)
{
PyObject *scf_q_obj, *x_obj;
unsigned dt, sr;
float *scf_q, *x;
lc3_intfloat_t *scf_q, *x;
int inv;
if (!PyArg_ParseTuple(args, "IIOpO", &dt, &sr, &scf_q_obj, &inv, &x_obj))
@@ -130,8 +138,17 @@ static PyObject *spectral_shaping_py(PyObject *m, PyObject *args)
CTYPES_CHECK("scf_q", to_1d_ptr(scf_q_obj, NPY_FLOAT, 16, &scf_q));
CTYPES_CHECK("x", x_obj = to_1d_ptr(x_obj, NPY_FLOAT, ne, &x));
#ifdef CONFIG_FIXED_POINT
for (int i = 0; i < 16; i++) scf_q[i] = ldexpf(((float *)scf_q)[i], 24);
for (int i = 0; i < ne; i++) x[i] = ldexpf(((float *)x)[i], 8);
#endif
spectral_shaping(dt, sr, scf_q, inv, x, x);
#ifdef CONFIG_FIXED_POINT
for (int i = 0; i < ne; i++) ((float *)x)[i] = ldexpf(x[i], -8);
#endif
return Py_BuildValue("O", x_obj);
}
@@ -165,7 +182,7 @@ static PyObject *synthesize_py(PyObject *m, PyObject *args)
PyObject *data_obj, *x_obj;
struct lc3_sns_data data;
unsigned dt, sr;
float *x;
lc3_intfloat_t *x;
if (!PyArg_ParseTuple(args, "IIOO", &dt, &sr, &data_obj, &x_obj))
return NULL;
@@ -178,8 +195,16 @@ static PyObject *synthesize_py(PyObject *m, PyObject *args)
CTYPES_CHECK("x", x_obj = to_1d_ptr(x_obj, NPY_FLOAT, ne, &x));
#ifdef CONFIG_FIXED_POINT
for (int i = 0; i < ne; i++) x[i] = ldexpf(((float *)x)[i], 8);
#endif
lc3_sns_synthesize(dt, sr, &data, x, x);
#ifdef CONFIG_FIXED_POINT
for (int i = 0; i < ne; i++) ((float *)x)[i] = ldexpf(x[i], -8);
#endif
return Py_BuildValue("O", x_obj);
}