1 /*************************************************************************/
2 /* */
3 /* Language Technologies Institute */
4 /* Carnegie Mellon University */
5 /* Copyright (c) 2001 */
6 /* All Rights Reserved. */
7 /* */
8 /* Permission is hereby granted, free of charge, to use and distribute */
9 /* this software and its documentation without restriction, including */
10 /* without limitation the rights to use, copy, modify, merge, publish, */
11 /* distribute, sublicense, and/or sell copies of this work, and to */
12 /* permit persons to whom this work is furnished to do so, subject to */
13 /* the following conditions: */
14 /* 1. The code must retain the above copyright notice, this list of */
15 /* conditions and the following disclaimer. */
16 /* 2. Any modifications must be clearly marked as such. */
17 /* 3. Original authors' names are not deleted. */
18 /* 4. The authors' names are not used to endorse or promote products */
19 /* derived from this software without specific prior written */
20 /* permission. */
21 /* */
22 /* CARNEGIE MELLON UNIVERSITY AND THE CONTRIBUTORS TO THIS WORK */
23 /* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */
24 /* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */
25 /* SHALL CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS BE LIABLE */
26 /* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */
27 /* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */
28 /* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */
29 /* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */
30 /* THIS SOFTWARE. */
31 /* */
32 /*************************************************************************/
33 /* Author: Alan W Black (awb@cs.cmu.edu) */
34 /* Date: August 2000 */
35 /*************************************************************************/
36 /* */
37 /* Waveforms */
38 /* */
39 /*************************************************************************/
40 #include "cst_string.h"
41 #include "cst_val.h"
42 #include "cst_sts.h"
43
CST_VAL_REGISTER_TYPE(lpcres,cst_lpcres)44 CST_VAL_REGISTER_TYPE(lpcres,cst_lpcres)
45
46 cst_lpcres *new_lpcres()
47 {
48 cst_lpcres *l = cst_alloc(struct cst_lpcres_struct,1);
49 return l;
50 }
51
delete_lpcres(cst_lpcres * l)52 void delete_lpcres(cst_lpcres *l)
53 {
54 if (l)
55 {
56 cst_free(l->times);
57 cst_free((unsigned short **)l->frames);
58 cst_free(l->residual);
59 cst_free(l->sizes);
60 if (l->delayed_decoding)
61 cst_free(l->packed_residuals);
62 cst_free(l);
63 }
64 return;
65 }
66
lpcres_frame_shift(cst_lpcres * t,int frame)67 float lpcres_frame_shift(cst_lpcres *t, int frame)
68 {
69 if (frame == 0)
70 return (float) t->times[frame];
71 else
72 return (float) t->times[frame]-t->times[frame-1];
73 }
74
lpcres_resize_frames(cst_lpcres * l,int num_frames)75 void lpcres_resize_frames(cst_lpcres *l,int num_frames)
76 {
77 l->times = cst_alloc(int,num_frames);
78 l->frames = cst_alloc(const unsigned short*,num_frames);
79 l->sizes = cst_alloc(int,num_frames);
80 l->num_frames = num_frames;
81 }
82
lpcres_resize_samples(cst_lpcres * l,int num_samples)83 void lpcres_resize_samples(cst_lpcres *l,int num_samples)
84 {
85 l->residual = cst_alloc(unsigned char,num_samples);
86 /* mulaw for 0 is 255 */
87 memset(l->residual,255,num_samples);
88 l->num_samples = num_samples;
89
90 }
91