summaryrefslogtreecommitdiffstats
path: root/lib/rbcodec/codecs/libspeex/speex.c
blob: 9836de36b892d4708014071a8096a54e54459ed7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
/* Copyright (C) 2002 Jean-Marc Valin
   File: speex.c

   Basic Speex functions

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions
   are met:

   - Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.

   - Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

   - Neither the name of the Xiph.org Foundation nor the names of its
   contributors may be used to endorse or promote products derived from
   this software without specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

#ifdef HAVE_CONFIG_H
#include "config-speex.h"
#endif

#include "modes.h"
#ifndef FIXED_POINT
#include <math.h>
#endif
#include "os_support.h"

#ifndef NULL
#define NULL 0
#endif

#define MAX_IN_SAMPLES 640

#ifndef SPEEX_DISABLE_ENCODER
EXPORT void *speex_encoder_init(const SpeexMode *mode)
{
   return mode->enc_init(mode);
}
#endif

EXPORT void *speex_decoder_init(const SpeexMode *mode)
{
   return mode->dec_init(mode);
}

#ifndef SPEEX_DISABLE_ENCODER
EXPORT void speex_encoder_destroy(void *state)
{
   (*((SpeexMode**)state))->enc_destroy(state);
}
#endif

EXPORT void speex_decoder_destroy(void *state)
{
   (*((SpeexMode**)state))->dec_destroy(state);
}

#ifndef SPEEX_DISABLE_ENCODER
int speex_encode_native(void *state, spx_word16_t *in, SpeexBits *bits)
{
   return (*((SpeexMode**)state))->enc(state, in, bits);
}
#endif

int speex_decode_native(void *state, SpeexBits *bits, spx_word16_t *out)
{
   return (*((SpeexMode**)state))->dec(state, bits, out);
}



#ifdef FIXED_POINT

#ifndef SPEEX_DISABLE_ENCODER
#ifndef DISABLE_FLOAT_API
EXPORT int speex_encode(void *state, float *in, SpeexBits *bits)
{
   int i;
   spx_int32_t N;
   spx_int16_t short_in[MAX_IN_SAMPLES];
   speex_encoder_ctl(state, SPEEX_GET_FRAME_SIZE, &N);
   for (i=0;i<N;i++)
   {
      if (in[i]>32767.f)
         short_in[i] = 32767;
      else if (in[i]<-32768.f)
         short_in[i] = -32768;
      else
         short_in[i] = (spx_int16_t)floor(.5+in[i]);
   }
   return (*((SpeexMode**)state))->enc(state, short_in, bits);
}
#endif /* #ifndef DISABLE_FLOAT_API */

EXPORT int speex_encode_int(void *state, spx_int16_t *in, SpeexBits *bits)
{
   SpeexMode *mode;
   mode = *(SpeexMode**)state;
   return (mode)->enc(state, in, bits);
}
#endif /* SPEEX_DISABLE_ENCODER */

#ifndef DISABLE_FLOAT_API
EXPORT int speex_decode(void *state, SpeexBits *bits, float *out)
{
   int i, ret;
   spx_int32_t N;
   spx_int16_t short_out[MAX_IN_SAMPLES];
   speex_decoder_ctl(state, SPEEX_GET_FRAME_SIZE, &N);
   ret = (*((SpeexMode**)state))->dec(state, bits, short_out);
   for (i=0;i<N;i++)
      out[i] = short_out[i];
   return ret;
}
#endif /* #ifndef DISABLE_FLOAT_API */

EXPORT int speex_decode_int(void *state, SpeexBits *bits, spx_int16_t *out)
{
   SpeexMode *mode = *(SpeexMode**)state;
   return (mode)->dec(state, bits, out);
}

#else

EXPORT int speex_encode(void *state, float *in, SpeexBits *bits)
{
   return (*((SpeexMode**)state))->enc(state, in, bits);
}

EXPORT int speex_encode_int(void *state, spx_int16_t *in, SpeexBits *bits)
{
   int i;
   spx_int32_t N;
   float float_in[MAX_IN_SAMPLES];
   speex_encoder_ctl(state, SPEEX_GET_FRAME_SIZE, &N);
   for (i=0;i<N;i++)
      float_in[i] = in[i];
   return (*((SpeexMode**)state))->enc(state, float_in, bits);
}

EXPORT int speex_decode(void *state, SpeexBits *bits, float *out)
{
   return (*((SpeexMode**)state))->dec(state, bits, out);
}

EXPORT int speex_decode_int(void *state, SpeexBits *bits, spx_int16_t *out)
{
   int i;
   spx_int32_t N;
   float float_out[MAX_IN_SAMPLES];
   int ret;
   speex_decoder_ctl(state, SPEEX_GET_FRAME_SIZE, &N);
   ret = (*((SpeexMode**)state))->dec(state, bits, float_out);
   for (i=0;i<N;i++)
   {
      if (float_out[i]>32767.f)
         out[i] = 32767;
      else if (float_out[i]<-32768.f)
         out[i] = -32768;
      else
         out[i] = (spx_int16_t)floor(.5+float_out[i]);
   }
   return ret;
}
#endif

#ifndef SPEEX_DISABLE_ENCODER
EXPORT int speex_encoder_ctl(void *state, int request, void *ptr)
{
   return (*((SpeexMode**)state))->enc_ctl(state, request, ptr);
}
#endif

EXPORT int speex_decoder_ctl(void *state, int request, void *ptr)
{
   return (*((SpeexMode**)state))->dec_ctl(state, request, ptr);
}

int nb_mode_query(const void *mode, int request, void *ptr)
{
   const SpeexNBMode *m = (const SpeexNBMode*)mode;

   switch (request)
   {
   case SPEEX_MODE_FRAME_SIZE:
      *((int*)ptr)=m->frameSize;
      break;
   case SPEEX_SUBMODE_BITS_PER_FRAME:
      if (*((int*)ptr)==0)
         *((int*)ptr) = NB_SUBMODE_BITS+1;
      else if (m->submodes[*((int*)ptr)]==NULL)
         *((int*)ptr) = -1;
      else
         *((int*)ptr) = m->submodes[*((int*)ptr)]->bits_per_frame;
      break;
   default:
      speex_warning_int("Unknown nb_mode_query request: ", request);
      return -1;
   }
   return 0;
}



EXPORT int speex_lib_ctl(int request, void *ptr)
{
   switch (request)
   {
      case SPEEX_LIB_GET_MAJOR_VERSION:
         *((int*)ptr) = SPEEX_MAJOR_VERSION;
         break;
      case SPEEX_LIB_GET_MINOR_VERSION:
         *((int*)ptr) = SPEEX_MINOR_VERSION;
         break;
      case SPEEX_LIB_GET_MICRO_VERSION:
         *((int*)ptr) = SPEEX_MICRO_VERSION;
         break;
      case SPEEX_LIB_GET_EXTRA_VERSION:
         *((const char**)ptr) = SPEEX_EXTRA_VERSION;
         break;
      case SPEEX_LIB_GET_VERSION_STRING:
         *((const char**)ptr) = SPEEX_VERSION;
         break;
      /*case SPEEX_LIB_SET_ALLOC_FUNC:
         break;
      case SPEEX_LIB_GET_ALLOC_FUNC:
         break;
      case SPEEX_LIB_SET_FREE_FUNC:
         break;
      case SPEEX_LIB_GET_FREE_FUNC:
         break;*/
      default:
         speex_warning_int("Unknown wb_mode_query request: ", request);
         return -1;
   }
   return 0;
}