public static int ms_mgau_mllr_transform(ps_mgau_t s,
Pointer <ps_mllr_t> mllr)
{
ms_mgau_model_t msg = (ms_mgau_model_t)s;
return(ms_gauden.gauden_mllr_transform(msg.g, mllr, msg.config));
}
public static void ms_mgau_free(ps_mgau_t mg)
{
ms_mgau_model_t msg = (ms_mgau_model_t)mg;
if (msg == null)
{
return;
}
if (msg.g.IsNonNull)
{
ms_gauden.gauden_free(msg.g);
}
if (msg.s.IsNonNull)
{
ms_senone.senone_free(msg.s);
}
if (msg.dist.IsNonNull)
{
ckd_alloc.ckd_free_3d(msg.dist);
}
if (msg.mgau_active.IsNonNull)
{
ckd_alloc.ckd_free(msg.mgau_active);
}
}
public static ps_mgau_t ms_mgau_init(Pointer <acmod_t> acmod, Pointer <logmath_t> lmath, Pointer <bin_mdef_t> mdef)
{
/* Codebooks */
ms_mgau_model_t msg;
ps_mgau_t mg;
Pointer <gauden_t> g;
Pointer <senone_t> s;
Pointer <cmd_ln_t> config;
int i;
config = acmod.Deref.config;
msg = new ms_mgau_model_t();
msg.config = config;
msg.g = PointerHelpers.NULL <gauden_t>();
msg.s = PointerHelpers.NULL <senone_t>();
if ((g = msg.g = ms_gauden.gauden_init(cmd_ln.cmd_ln_str_r(config, cstring.ToCString("_mean")),
cmd_ln.cmd_ln_str_r(config, cstring.ToCString("_var")),
(float)cmd_ln.cmd_ln_float_r(config, cstring.ToCString("-varfloor")),
lmath)).IsNull)
{
err.E_ERROR("Failed to read means and variances\n");
goto error_out;
}
/* Verify n_feat and veclen, against acmod. */
if (g.Deref.n_feat != feat.feat_dimension1(acmod.Deref.fcb))
{
err.E_ERROR(string.Format("Number of streams does not match: {0} != {1}\n",
g.Deref.n_feat, feat.feat_dimension1(acmod.Deref.fcb)));
goto error_out;
}
for (i = 0; i < g.Deref.n_feat; ++i)
{
if (g.Deref.featlen[i] != feat.feat_dimension2(acmod.Deref.fcb, i))
{
err.E_ERROR(string.Format("Dimension of stream {0} does not match: {1} != {2}\n", i,
g.Deref.featlen[i], feat.feat_dimension2(acmod.Deref.fcb, i)));
goto error_out;
}
}
s = msg.s = ms_senone.senone_init(msg.g,
cmd_ln.cmd_ln_str_r(config, cstring.ToCString("_mixw")),
cmd_ln.cmd_ln_str_r(config, cstring.ToCString("_senmgau")),
(float)cmd_ln.cmd_ln_float_r(config, cstring.ToCString("-mixwfloor")),
lmath, mdef);
s.Deref.aw = (int)cmd_ln.cmd_ln_int_r(config, cstring.ToCString("-aw"));
/* Verify senone parameters against gauden parameters */
if (s.Deref.n_feat != g.Deref.n_feat)
{
err.E_FATAL(string.Format("#Feature mismatch: gauden= {0}, senone= {1}\n", g.Deref.n_feat,
s.Deref.n_feat));
}
if (s.Deref.n_cw != g.Deref.n_density)
{
err.E_FATAL(string.Format("#Densities mismatch: gauden= {0}, senone= {1}\n",
g.Deref.n_density, s.Deref.n_cw));
}
if (s.Deref.n_gauden > g.Deref.n_mgau)
{
err.E_FATAL(string.Format("Senones need more codebooks ({0}) than present ({1})\n",
s.Deref.n_gauden, g.Deref.n_mgau));
}
if (s.Deref.n_gauden < g.Deref.n_mgau)
{
err.E_ERROR(string.Format("Senones use fewer codebooks ({0}) than present ({1})\n",
s.Deref.n_gauden, g.Deref.n_mgau));
}
msg.topn = (int)cmd_ln.cmd_ln_int_r(config, cstring.ToCString("-topn"));
err.E_INFO(string.Format("The value of topn: {0}\n", msg.topn));
if (msg.topn == 0 || msg.topn > msg.g.Deref.n_density)
{
err.E_WARN
(string.Format("-topn argument ({0}) invalid or > #density codewords ({1}); set to latter\n",
msg.topn, msg.g.Deref.n_density));
msg.topn = msg.g.Deref.n_density;
}
msg.dist = ckd_alloc.ckd_calloc_struct_3d <gauden_dist_t>((uint)g.Deref.n_mgau, (uint)g.Deref.n_feat, (uint)msg.topn);
msg.mgau_active = ckd_alloc.ckd_calloc <byte>(g.Deref.n_mgau);
mg = (ps_mgau_t)msg;
mg.vt = ms_mgau_funcs;
return(mg);
error_out:
ms_mgau_free(msg);
return(null);
}
public static int ms_mgau_topn(ms_mgau_model_t msg)
{
return(msg.topn);
}
public static Pointer <senone_t> ms_mgau_senone(ms_mgau_model_t msg)
{
return(msg.s);
}
public static Pointer <gauden_t> ms_mgau_gauden(ms_mgau_model_t msg)
{
return(msg.g);
}
public static int ms_cont_mgau_frame_eval(ps_mgau_t mg,
Pointer <short> senscr,
Pointer <byte> senone_active,
int n_senone_active,
Pointer <Pointer <float> > feats,
int frame,
int compallsen)
{
ms_mgau_model_t msg = (ms_mgau_model_t)mg;
int gid;
int topn;
int best;
Pointer <gauden_t> g;
Pointer <senone_t> sen;
topn = ms_mgau_topn(msg);
g = ms_mgau_gauden(msg);
sen = ms_mgau_senone(msg);
if (compallsen != 0)
{
int s;
for (gid = 0; gid < g.Deref.n_mgau; gid++)
{
ms_gauden.gauden_dist(g, gid, topn, feats, msg.dist[gid]);
}
best = (int)0x7fffffff;
for (s = 0; s < sen.Deref.n_sen; s++)
{
senscr[s] = checked ((short)(ms_senone.senone_eval(sen, s, msg.dist[sen.Deref.mgau[s]], topn)));
if (best > senscr[s])
{
best = senscr[s];
}
}
/* Normalize senone scores */
for (s = 0; s < sen.Deref.n_sen; s++)
{
int bs = senscr[s] - best;
if (bs > 32767)
{
bs = 32767;
}
if (bs < -32768)
{
bs = -32768;
}
senscr[s] = checked ((short)bs);
}
}
else
{
int i, n;
/* Flag all active mixture-gaussian codebooks */
for (gid = 0; gid < g.Deref.n_mgau; gid++)
{
msg.mgau_active[gid] = 0;
}
n = 0;
for (i = 0; i < n_senone_active; i++)
{
/* senone_active consists of deltas. */
int s = senone_active[i] + n;
msg.mgau_active[sen.Deref.mgau[s]] = 1;
n = s;
}
/* Compute topn gaussian density values (for active codebooks) */
for (gid = 0; gid < g.Deref.n_mgau; gid++)
{
if (msg.mgau_active[gid] != 0)
{
ms_gauden.gauden_dist(g, gid, topn, feats, msg.dist[gid]);
}
}
best = (int)0x7fffffff;
n = 0;
for (i = 0; i < n_senone_active; i++)
{
int s = senone_active[i] + n;
senscr[s] = checked ((short)ms_senone.senone_eval(sen, s, msg.dist[sen.Deref.mgau[s]], topn));
if (best > senscr[s])
{
best = senscr[s];
}
n = s;
}
/* Normalize senone scores */
n = 0;
for (i = 0; i < n_senone_active; i++)
{
int s = senone_active[i] + n;
int bs = senscr[s] - best;
if (bs > 32767)
{
bs = 32767;
}
if (bs < -32768)
{
bs = -32768;
}
senscr[s] = checked ((short)bs);
n = s;
}
}
return(0);
}
