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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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24
test/mdct_py.c
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@@ -28,7 +28,7 @@ static PyObject *mdct_forward_py(PyObject *m, PyObject *args)
PyObject *x_obj, *xd_obj, *y_obj, *d_obj;
enum lc3_dt dt;
enum lc3_srate sr;
float *x, *xd, *y, *d;
lc3_intfloat_t *x, *xd, *y, *d;
if (!PyArg_ParseTuple(args, "iiOO", &dt, &sr, &x_obj, &xd_obj))
return NULL;
@@ -45,8 +45,18 @@ static PyObject *mdct_forward_py(PyObject *m, PyObject *args)
memcpy(d, xd, nd * sizeof(float));
#ifdef CONFIG_FIXED_POINT
for (int i = 0; i < ns; i++) x[i] = ldexpf(((float *)x)[i], 8);
for (int i = 0; i < nd; i++) d[i] = ldexpf(((float *)d)[i], 8);
#endif
lc3_mdct_forward(dt, sr, sr, x, d, y);
#ifdef CONFIG_FIXED_POINT
for (int i = 0; i < nd; i++) ((float *)d)[i] = ldexpf(d[i], -8);
for (int i = 0; i < ns; i++) ((float *)y)[i] = ldexpf(y[i], -8);
#endif
return Py_BuildValue("NN", y_obj, d_obj);
}
@@ -55,7 +65,7 @@ static PyObject *mdct_inverse_py(PyObject *m, PyObject *args)
PyObject *x_obj, *xd_obj, *d_obj, *y_obj;
enum lc3_dt dt;
enum lc3_srate sr;
float *x, *xd, *d, *y;
lc3_intfloat_t *x, *xd, *d, *y;
if (!PyArg_ParseTuple(args, "iiOO", &dt, &sr, &x_obj, &xd_obj))
return NULL;
@@ -72,8 +82,18 @@ static PyObject *mdct_inverse_py(PyObject *m, PyObject *args)
memcpy(d, xd, nd * sizeof(float));
#ifdef CONFIG_FIXED_POINT
for (int i = 0; i < ns; i++) x[i] = ldexpf(((float *)x)[i], 8);
for (int i = 0; i < nd; i++) d[i] = ldexpf(((float *)d)[i], 8);
#endif
lc3_mdct_inverse(dt, sr, sr, x, d, y);
#ifdef CONFIG_FIXED_POINT
for (int i = 0; i < nd; i++) ((float *)d)[i] = ldexpf(d[i], -8);
for (int i = 0; i < ns; i++) ((float *)y)[i] = ldexpf(y[i], -8);
#endif
return Py_BuildValue("NN", y_obj, d_obj);
}