Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | /* Copyright (C) 2002 Jean-Marc Valin |
| 2 | File: speex.c |
| 3 | |
| 4 | Basic Speex functions |
| 5 | |
| 6 | Redistribution and use in source and binary forms, with or without |
| 7 | modification, are permitted provided that the following conditions |
| 8 | are met: |
| 9 | |
| 10 | - Redistributions of source code must retain the above copyright |
| 11 | notice, this list of conditions and the following disclaimer. |
| 12 | |
| 13 | - Redistributions in binary form must reproduce the above copyright |
| 14 | notice, this list of conditions and the following disclaimer in the |
| 15 | documentation and/or other materials provided with the distribution. |
| 16 | |
| 17 | - Neither the name of the Xiph.org Foundation nor the names of its |
| 18 | contributors may be used to endorse or promote products derived from |
| 19 | this software without specific prior written permission. |
| 20 | |
| 21 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 22 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 23 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 24 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| 25 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 26 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 27 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 28 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 29 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 30 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 31 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 | |
| 33 | */ |
| 34 | |
| 35 | #ifdef HAVE_CONFIG_H |
| 36 | #include "config.h" |
| 37 | #endif |
| 38 | |
| 39 | #include "modes.h" |
| 40 | #include <math.h> |
| 41 | #include "os_support.h" |
| 42 | |
| 43 | #ifndef NULL |
| 44 | #define NULL 0 |
| 45 | #endif |
| 46 | |
| 47 | #define MAX_IN_SAMPLES 640 |
| 48 | |
| 49 | |
| 50 | |
| 51 | EXPORT void *speex_encoder_init(const SpeexMode *mode) |
| 52 | { |
| 53 | return mode->enc_init(mode); |
| 54 | } |
| 55 | |
| 56 | EXPORT void *speex_decoder_init(const SpeexMode *mode) |
| 57 | { |
| 58 | return mode->dec_init(mode); |
| 59 | } |
| 60 | |
| 61 | EXPORT void speex_encoder_destroy(void *state) |
| 62 | { |
| 63 | (*((SpeexMode**)state))->enc_destroy(state); |
| 64 | } |
| 65 | |
| 66 | EXPORT void speex_decoder_destroy(void *state) |
| 67 | { |
| 68 | (*((SpeexMode**)state))->dec_destroy(state); |
| 69 | } |
| 70 | |
| 71 | |
| 72 | |
| 73 | int speex_encode_native(void *state, spx_word16_t *in, SpeexBits *bits) |
| 74 | { |
| 75 | return (*((SpeexMode**)state))->enc(state, in, bits); |
| 76 | } |
| 77 | |
| 78 | int speex_decode_native(void *state, SpeexBits *bits, spx_word16_t *out) |
| 79 | { |
| 80 | return (*((SpeexMode**)state))->dec(state, bits, out); |
| 81 | } |
| 82 | |
| 83 | |
| 84 | |
| 85 | #ifdef FIXED_POINT |
| 86 | |
| 87 | #ifndef DISABLE_FLOAT_API |
| 88 | EXPORT int speex_encode(void *state, float *in, SpeexBits *bits) |
| 89 | { |
| 90 | int i; |
| 91 | spx_int32_t N; |
| 92 | spx_int16_t short_in[MAX_IN_SAMPLES]; |
| 93 | speex_encoder_ctl(state, SPEEX_GET_FRAME_SIZE, &N); |
| 94 | for (i=0;i<N;i++) |
| 95 | { |
| 96 | if (in[i]>32767.f) |
| 97 | short_in[i] = 32767; |
| 98 | else if (in[i]<-32768.f) |
| 99 | short_in[i] = -32768; |
| 100 | else |
| 101 | short_in[i] = (spx_int16_t)floor(.5+in[i]); |
| 102 | } |
| 103 | return (*((SpeexMode**)state))->enc(state, short_in, bits); |
| 104 | } |
| 105 | #endif /* #ifndef DISABLE_FLOAT_API */ |
| 106 | |
| 107 | EXPORT int speex_encode_int(void *state, spx_int16_t *in, SpeexBits *bits) |
| 108 | { |
| 109 | SpeexMode *mode; |
| 110 | mode = *(SpeexMode**)state; |
| 111 | return (mode)->enc(state, in, bits); |
| 112 | } |
| 113 | |
| 114 | #ifndef DISABLE_FLOAT_API |
| 115 | EXPORT int speex_decode(void *state, SpeexBits *bits, float *out) |
| 116 | { |
| 117 | int i, ret; |
| 118 | spx_int32_t N; |
| 119 | spx_int16_t short_out[MAX_IN_SAMPLES]; |
| 120 | speex_decoder_ctl(state, SPEEX_GET_FRAME_SIZE, &N); |
| 121 | ret = (*((SpeexMode**)state))->dec(state, bits, short_out); |
| 122 | for (i=0;i<N;i++) |
| 123 | out[i] = short_out[i]; |
| 124 | return ret; |
| 125 | } |
| 126 | #endif /* #ifndef DISABLE_FLOAT_API */ |
| 127 | |
| 128 | EXPORT int speex_decode_int(void *state, SpeexBits *bits, spx_int16_t *out) |
| 129 | { |
| 130 | SpeexMode *mode = *(SpeexMode**)state; |
| 131 | return (mode)->dec(state, bits, out); |
| 132 | } |
| 133 | |
| 134 | #else |
| 135 | |
| 136 | EXPORT int speex_encode(void *state, float *in, SpeexBits *bits) |
| 137 | { |
| 138 | return (*((SpeexMode**)state))->enc(state, in, bits); |
| 139 | } |
| 140 | |
| 141 | EXPORT int speex_encode_int(void *state, spx_int16_t *in, SpeexBits *bits) |
| 142 | { |
| 143 | int i; |
| 144 | spx_int32_t N; |
| 145 | float float_in[MAX_IN_SAMPLES]; |
| 146 | speex_encoder_ctl(state, SPEEX_GET_FRAME_SIZE, &N); |
| 147 | for (i=0;i<N;i++) |
| 148 | float_in[i] = in[i]; |
| 149 | return (*((SpeexMode**)state))->enc(state, float_in, bits); |
| 150 | } |
| 151 | |
| 152 | EXPORT int speex_decode(void *state, SpeexBits *bits, float *out) |
| 153 | { |
| 154 | return (*((SpeexMode**)state))->dec(state, bits, out); |
| 155 | } |
| 156 | |
| 157 | EXPORT int speex_decode_int(void *state, SpeexBits *bits, spx_int16_t *out) |
| 158 | { |
| 159 | int i; |
| 160 | spx_int32_t N; |
| 161 | float float_out[MAX_IN_SAMPLES]; |
| 162 | int ret; |
| 163 | speex_decoder_ctl(state, SPEEX_GET_FRAME_SIZE, &N); |
| 164 | ret = (*((SpeexMode**)state))->dec(state, bits, float_out); |
| 165 | for (i=0;i<N;i++) |
| 166 | { |
| 167 | if (float_out[i]>32767.f) |
| 168 | out[i] = 32767; |
| 169 | else if (float_out[i]<-32768.f) |
| 170 | out[i] = -32768; |
| 171 | else |
| 172 | out[i] = (spx_int16_t)floor(.5+float_out[i]); |
| 173 | } |
| 174 | return ret; |
| 175 | } |
| 176 | #endif |
| 177 | |
| 178 | |
| 179 | |
| 180 | EXPORT int speex_encoder_ctl(void *state, int request, void *ptr) |
| 181 | { |
| 182 | return (*((SpeexMode**)state))->enc_ctl(state, request, ptr); |
| 183 | } |
| 184 | |
| 185 | EXPORT int speex_decoder_ctl(void *state, int request, void *ptr) |
| 186 | { |
| 187 | return (*((SpeexMode**)state))->dec_ctl(state, request, ptr); |
| 188 | } |
| 189 | |
| 190 | |
| 191 | |
| 192 | int nb_mode_query(const void *mode, int request, void *ptr) |
| 193 | { |
| 194 | const SpeexNBMode *m = (const SpeexNBMode*)mode; |
| 195 | |
| 196 | switch (request) |
| 197 | { |
| 198 | case SPEEX_MODE_FRAME_SIZE: |
| 199 | *((int*)ptr)=m->frameSize; |
| 200 | break; |
| 201 | case SPEEX_SUBMODE_BITS_PER_FRAME: |
| 202 | if (*((int*)ptr)==0) |
| 203 | *((int*)ptr) = NB_SUBMODE_BITS+1; |
| 204 | else if (m->submodes[*((int*)ptr)]==NULL) |
| 205 | *((int*)ptr) = -1; |
| 206 | else |
| 207 | *((int*)ptr) = m->submodes[*((int*)ptr)]->bits_per_frame; |
| 208 | break; |
| 209 | default: |
| 210 | speex_warning_int("Unknown nb_mode_query request: ", request); |
| 211 | return -1; |
| 212 | } |
| 213 | return 0; |
| 214 | } |
| 215 | |
| 216 | |
| 217 | |
| 218 | EXPORT int speex_lib_ctl(int request, void *ptr) |
| 219 | { |
| 220 | switch (request) |
| 221 | { |
| 222 | case SPEEX_LIB_GET_MAJOR_VERSION: |
| 223 | *((int*)ptr) = SPEEX_MAJOR_VERSION; |
| 224 | break; |
| 225 | case SPEEX_LIB_GET_MINOR_VERSION: |
| 226 | *((int*)ptr) = SPEEX_MINOR_VERSION; |
| 227 | break; |
| 228 | case SPEEX_LIB_GET_MICRO_VERSION: |
| 229 | *((int*)ptr) = SPEEX_MICRO_VERSION; |
| 230 | break; |
| 231 | case SPEEX_LIB_GET_EXTRA_VERSION: |
| 232 | *((const char**)ptr) = SPEEX_EXTRA_VERSION; |
| 233 | break; |
| 234 | case SPEEX_LIB_GET_VERSION_STRING: |
| 235 | *((const char**)ptr) = SPEEX_VERSION; |
| 236 | break; |
| 237 | /*case SPEEX_LIB_SET_ALLOC_FUNC: |
| 238 | break; |
| 239 | case SPEEX_LIB_GET_ALLOC_FUNC: |
| 240 | break; |
| 241 | case SPEEX_LIB_SET_FREE_FUNC: |
| 242 | break; |
| 243 | case SPEEX_LIB_GET_FREE_FUNC: |
| 244 | break;*/ |
| 245 | default: |
| 246 | speex_warning_int("Unknown wb_mode_query request: ", request); |
| 247 | return -1; |
| 248 | } |
| 249 | return 0; |
| 250 | } |