Fixes some compiler warnings
[opus.git] / silk / silk_control_codec.c
1 /***********************************************************************\r
2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. \r
3 Redistribution and use in source and binary forms, with or without \r
4 modification, (subject to the limitations in the disclaimer below) \r
5 are permitted provided that the following conditions are met:\r
6 - Redistributions of source code must retain the above copyright notice,\r
7 this list of conditions and the following disclaimer.\r
8 - Redistributions in binary form must reproduce the above copyright \r
9 notice, this list of conditions and the following disclaimer in the \r
10 documentation and/or other materials provided with the distribution.\r
11 - Neither the name of Skype Limited, nor the names of specific \r
12 contributors, may be used to endorse or promote products derived from \r
13 this software without specific prior written permission.\r
14 NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED \r
15 BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND \r
16 CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,\r
17 BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND \r
18 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE \r
19 COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, \r
20 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT\r
21 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF \r
22 USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON \r
23 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT \r
24 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE \r
25 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
26 ***********************************************************************/\r
27 \r
28 #ifdef HAVE_CONFIG_H\r
29 #include "config.h"\r
30 #endif\r
31 #ifdef FIXED_POINT\r
32 #include "silk_main_FIX.h"\r
33 #define silk_encoder_state_Fxx      silk_encoder_state_FIX\r
34 #else\r
35 #include "silk_main_FLP.h"\r
36 #define silk_encoder_state_Fxx      silk_encoder_state_FLP\r
37 #endif\r
38 #include "silk_tuning_parameters.h"\r
39 \r
40 SKP_int silk_setup_resamplers(\r
41     silk_encoder_state_Fxx          *psEnc,             /* I/O                      */\r
42     SKP_int                         fs_kHz              /* I                        */\r
43 );\r
44 \r
45 SKP_int silk_setup_fs(\r
46     silk_encoder_state_Fxx          *psEnc,             /* I/O                      */\r
47     SKP_int                         fs_kHz,             /* I                        */\r
48     SKP_int                         PacketSize_ms       /* I                        */\r
49 );\r
50 \r
51 SKP_int silk_setup_complexity(\r
52     silk_encoder_state              *psEncC,            /* I/O                      */\r
53     SKP_int                         Complexity          /* I                        */\r
54 );\r
55 \r
56 SKP_INLINE SKP_int silk_setup_LBRR(\r
57     silk_encoder_state                  *psEncC,            /* I/O                      */\r
58     const SKP_int32                 TargetRate_bps      /* I                        */\r
59 );\r
60 \r
61 \r
62 /* Control encoder */\r
63 SKP_int silk_control_encoder( \r
64     silk_encoder_state_Fxx          *psEnc,             /* I/O  Pointer to Silk encoder state           */\r
65     silk_EncControlStruct           *encControl,        /* I:   Control structure                       */\r
66     const SKP_int32                 TargetRate_bps,     /* I    Target max bitrate (bps)                */\r
67     const SKP_int                   allow_bw_switch,    /* I    Flag to allow switching audio bandwidth */\r
68     const SKP_int                   channelNb           /* I    Channel number                          */\r
69 )\r
70 {\r
71     SKP_int   fs_kHz, ret = 0;\r
72 \r
73     psEnc->sCmn.useDTX                 = encControl->useDTX;\r
74     psEnc->sCmn.useCBR                 = encControl->useCBR;\r
75     psEnc->sCmn.API_fs_Hz              = encControl->API_sampleRate;\r
76     psEnc->sCmn.maxInternal_fs_Hz      = encControl->maxInternalSampleRate;\r
77     psEnc->sCmn.minInternal_fs_Hz      = encControl->minInternalSampleRate;\r
78     psEnc->sCmn.desiredInternal_fs_Hz  = encControl->desiredInternalSampleRate;\r
79     psEnc->sCmn.useInBandFEC           = encControl->useInBandFEC;\r
80     psEnc->sCmn.nChannelsAPI           = encControl->nChannelsAPI;\r
81     psEnc->sCmn.nChannelsInternal      = encControl->nChannelsInternal;\r
82     psEnc->sCmn.allow_bandwidth_switch = allow_bw_switch;\r
83     psEnc->sCmn.channelNb              = channelNb;\r
84 \r
85     if( psEnc->sCmn.controlled_since_last_payload != 0 && psEnc->sCmn.prefillFlag == 0 ) {\r
86         if( psEnc->sCmn.API_fs_Hz != psEnc->sCmn.prev_API_fs_Hz && psEnc->sCmn.fs_kHz > 0 ) {\r
87             /* Change in API sampling rate in the middle of encoding a packet */\r
88             ret += silk_setup_resamplers( psEnc, psEnc->sCmn.fs_kHz );\r
89         }\r
90         return ret;\r
91     }\r
92 \r
93     /* Beyond this point we know that there are no previously coded frames in the payload buffer */\r
94 \r
95     /********************************************/\r
96     /* Determine internal sampling rate         */\r
97     /********************************************/\r
98     fs_kHz = silk_control_audio_bandwidth( &psEnc->sCmn );\r
99 \r
100     /********************************************/\r
101     /* Prepare resampler and buffered data      */\r
102     /********************************************/\r
103     ret += silk_setup_resamplers( psEnc, fs_kHz );\r
104 \r
105     /********************************************/\r
106     /* Set internal sampling frequency          */\r
107     /********************************************/\r
108     ret += silk_setup_fs( psEnc, fs_kHz, encControl->payloadSize_ms );\r
109 \r
110     /********************************************/\r
111     /* Set encoding complexity                  */\r
112     /********************************************/\r
113     ret += silk_setup_complexity( &psEnc->sCmn, encControl->complexity  );\r
114 \r
115     /********************************************/\r
116     /* Set packet loss rate measured by farend  */\r
117     /********************************************/\r
118     psEnc->sCmn.PacketLoss_perc = encControl->packetLossPercentage;\r
119 \r
120     /********************************************/\r
121     /* Set LBRR usage                           */\r
122     /********************************************/\r
123     ret += silk_setup_LBRR( &psEnc->sCmn, TargetRate_bps );\r
124 \r
125     psEnc->sCmn.controlled_since_last_payload = 1;\r
126 \r
127     return ret;\r
128 }\r
129 \r
130 SKP_int silk_setup_resamplers(\r
131     silk_encoder_state_Fxx          *psEnc,             /* I/O                      */\r
132     SKP_int                         fs_kHz              /* I                        */\r
133 )\r
134 {\r
135     SKP_int   ret = SILK_NO_ERROR;\r
136     SKP_int32 nSamples_temp;\r
137     \r
138     if( psEnc->sCmn.fs_kHz != fs_kHz || psEnc->sCmn.prev_API_fs_Hz != psEnc->sCmn.API_fs_Hz ) \r
139     {\r
140         if( psEnc->sCmn.fs_kHz == 0 ) {\r
141             /* Initialize the resampler for enc_API.c preparing resampling from API_fs_Hz to fs_kHz */\r
142             ret += silk_resampler_init( &psEnc->sCmn.resampler_state, psEnc->sCmn.API_fs_Hz, fs_kHz * 1000 );\r
143         } else {\r
144             /* Allocate worst case space for temporary upsampling, 8 to 48 kHz, so a factor 6 */\r
145             SKP_int16 x_buf_API_fs_Hz[ ( 2 * MAX_FRAME_LENGTH_MS + LA_SHAPE_MS ) * MAX_API_FS_KHZ ];\r
146 #ifdef FIXED_POINT\r
147             SKP_int16 *x_bufFIX = psEnc->x_buf;\r
148 #else\r
149             SKP_int16 x_bufFIX[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ]; \r
150 #endif\r
151 \r
152             nSamples_temp = SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + LA_SHAPE_MS * psEnc->sCmn.fs_kHz;\r
153 \r
154 #ifndef FIXED_POINT\r
155             SKP_float2short_array( x_bufFIX, psEnc->x_buf, nSamples_temp );\r
156 #endif\r
157 \r
158             if( SKP_SMULBB( fs_kHz, 1000 ) < psEnc->sCmn.API_fs_Hz && psEnc->sCmn.fs_kHz != 0 ) {\r
159                 /* Resample buffered data in x_buf to API_fs_Hz */\r
160 \r
161                 silk_resampler_state_struct  temp_resampler_state;\r
162 \r
163                 /* Initialize resampler for temporary resampling of x_buf data to API_fs_Hz */\r
164                 ret += silk_resampler_init( &temp_resampler_state, SKP_SMULBB( psEnc->sCmn.fs_kHz, 1000 ), psEnc->sCmn.API_fs_Hz );\r
165 \r
166                 /* Temporary resampling of x_buf data to API_fs_Hz */\r
167                 ret += silk_resampler( &temp_resampler_state, x_buf_API_fs_Hz, x_bufFIX, nSamples_temp );\r
168 \r
169                 /* Calculate number of samples that has been temporarily upsampled */\r
170                 nSamples_temp = SKP_DIV32_16( nSamples_temp * psEnc->sCmn.API_fs_Hz, SKP_SMULBB( psEnc->sCmn.fs_kHz, 1000 ) );\r
171 \r
172                 /* Initialize the resampler for enc_API.c preparing resampling from API_fs_Hz to fs_kHz */\r
173                 ret += silk_resampler_init( &psEnc->sCmn.resampler_state, psEnc->sCmn.API_fs_Hz, SKP_SMULBB( fs_kHz, 1000 ) );\r
174 \r
175             } else {\r
176                 /* Copy data */\r
177                 SKP_memcpy( x_buf_API_fs_Hz, x_bufFIX, nSamples_temp * sizeof( SKP_int16 ) );\r
178             }\r
179 \r
180             if( 1000 * fs_kHz != psEnc->sCmn.API_fs_Hz ) {\r
181                 /* Correct resampler state (unless resampling by a factor 1) by resampling buffered data from API_fs_Hz to fs_kHz */\r
182                 ret += silk_resampler( &psEnc->sCmn.resampler_state, x_bufFIX, x_buf_API_fs_Hz, nSamples_temp );\r
183             }\r
184 #ifndef FIXED_POINT\r
185             SKP_short2float_array( psEnc->x_buf, x_bufFIX, ( 2 * MAX_FRAME_LENGTH_MS + LA_SHAPE_MS ) * fs_kHz );\r
186 #endif\r
187         }\r
188     }\r
189 \r
190     psEnc->sCmn.prev_API_fs_Hz = psEnc->sCmn.API_fs_Hz;\r
191 \r
192     return ret;\r
193 }\r
194 \r
195 SKP_int silk_setup_fs(\r
196     silk_encoder_state_Fxx          *psEnc,             /* I/O                      */\r
197     SKP_int                         fs_kHz,             /* I                        */\r
198     SKP_int                         PacketSize_ms       /* I                        */\r
199 )\r
200 {\r
201     SKP_int ret = SILK_NO_ERROR;\r
202 \r
203     /* Set packet size */\r
204     if( PacketSize_ms != psEnc->sCmn.PacketSize_ms ) {\r
205         if( ( PacketSize_ms !=  10 ) &&\r
206             ( PacketSize_ms !=  20 ) &&\r
207             ( PacketSize_ms !=  40 ) && \r
208             ( PacketSize_ms !=  60 ) ) {\r
209             ret = SILK_ENC_PACKET_SIZE_NOT_SUPPORTED;\r
210         }\r
211         if( PacketSize_ms <= 10 ) {\r
212             psEnc->sCmn.nFramesPerPacket = 1;\r
213             psEnc->sCmn.nb_subfr = PacketSize_ms == 10 ? 2 : 1;\r
214             psEnc->sCmn.frame_length = SKP_SMULBB( PacketSize_ms, fs_kHz );\r
215             psEnc->sCmn.pitch_LPC_win_length = SKP_SMULBB( FIND_PITCH_LPC_WIN_MS_2_SF, fs_kHz );\r
216             if( psEnc->sCmn.fs_kHz == 8 ) {\r
217                 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_NB_iCDF;\r
218             } else {\r
219                 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_iCDF;\r
220             }\r
221         } else {\r
222             psEnc->sCmn.nFramesPerPacket = SKP_DIV32_16( PacketSize_ms, MAX_FRAME_LENGTH_MS );\r
223             psEnc->sCmn.nb_subfr = MAX_NB_SUBFR;\r
224             psEnc->sCmn.frame_length = SKP_SMULBB( 20, fs_kHz );\r
225             psEnc->sCmn.pitch_LPC_win_length = SKP_SMULBB( FIND_PITCH_LPC_WIN_MS, fs_kHz );\r
226             if( psEnc->sCmn.fs_kHz == 8 ) {\r
227                 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_NB_iCDF;\r
228             } else {\r
229                 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_iCDF; \r
230             }\r
231         }\r
232         psEnc->sCmn.PacketSize_ms  = PacketSize_ms;\r
233         psEnc->sCmn.TargetRate_bps = 0;         /* trigger new SNR computation */\r
234     }\r
235 \r
236     /* Set internal sampling frequency */\r
237     SKP_assert( fs_kHz == 8 || fs_kHz == 12 || fs_kHz == 16 );\r
238     SKP_assert( psEnc->sCmn.nb_subfr == 2 || psEnc->sCmn.nb_subfr == 4 );\r
239     if( psEnc->sCmn.fs_kHz != fs_kHz ) {\r
240         /* reset part of the state */\r
241 #ifdef FIXED_POINT\r
242         SKP_memset( &psEnc->sShape,               0, sizeof( silk_shape_state_FIX ) );\r
243         SKP_memset( &psEnc->sPrefilt,             0, sizeof( silk_prefilter_state_FIX ) );\r
244 #else\r
245         SKP_memset( &psEnc->sShape,               0, sizeof( silk_shape_state_FLP ) );\r
246         SKP_memset( &psEnc->sPrefilt,             0, sizeof( silk_prefilter_state_FLP ) );\r
247 #endif\r
248         SKP_memset( &psEnc->sCmn.sNSQ,            0, sizeof( silk_nsq_state ) );\r
249         SKP_memset( psEnc->sCmn.prev_NLSFq_Q15,   0, sizeof( psEnc->sCmn.prev_NLSFq_Q15 ) );\r
250         SKP_memset( &psEnc->sCmn.sLP.In_LP_State, 0, sizeof( psEnc->sCmn.sLP.In_LP_State ) );\r
251         psEnc->sCmn.inputBufIx                  = 0;\r
252         psEnc->sCmn.nFramesEncoded              = 0;\r
253         psEnc->sCmn.TargetRate_bps              = 0;     /* trigger new SNR computation */\r
254 \r
255         /* Initialize non-zero parameters */\r
256         psEnc->sCmn.prevLag                     = 100;\r
257         psEnc->sCmn.first_frame_after_reset     = 1;\r
258         psEnc->sPrefilt.lagPrev                 = 100;\r
259         psEnc->sShape.LastGainIndex             = 10;\r
260         psEnc->sCmn.sNSQ.lagPrev                = 100;\r
261         psEnc->sCmn.sNSQ.prev_inv_gain_Q16      = 65536;\r
262 \r
263         psEnc->sCmn.fs_kHz = fs_kHz;\r
264         if( psEnc->sCmn.fs_kHz == 8 ) {\r
265             if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) {\r
266                 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_NB_iCDF; \r
267             } else {\r
268                 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_NB_iCDF;\r
269             }\r
270         } else {\r
271             if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) {\r
272                 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_iCDF; \r
273             } else {\r
274                 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_iCDF;\r
275             }\r
276         }\r
277         if( psEnc->sCmn.fs_kHz == 8 || psEnc->sCmn.fs_kHz == 12 ) {\r
278             psEnc->sCmn.predictLPCOrder = MIN_LPC_ORDER;\r
279             psEnc->sCmn.psNLSF_CB  = &silk_NLSF_CB_NB_MB;\r
280         } else {\r
281             psEnc->sCmn.predictLPCOrder = MAX_LPC_ORDER;\r
282             psEnc->sCmn.psNLSF_CB  = &silk_NLSF_CB_WB;\r
283         }\r
284         psEnc->sCmn.subfr_length   = SUB_FRAME_LENGTH_MS * fs_kHz;\r
285         psEnc->sCmn.frame_length   = SKP_SMULBB( psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr );\r
286         psEnc->sCmn.ltp_mem_length = SKP_SMULBB( LTP_MEM_LENGTH_MS, fs_kHz ); \r
287         psEnc->sCmn.la_pitch       = SKP_SMULBB( LA_PITCH_MS, fs_kHz );\r
288         psEnc->sCmn.max_pitch_lag  = SKP_SMULBB( 18, fs_kHz );\r
289         if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) {\r
290             psEnc->sCmn.pitch_LPC_win_length = SKP_SMULBB( FIND_PITCH_LPC_WIN_MS, fs_kHz );\r
291         } else {\r
292             psEnc->sCmn.pitch_LPC_win_length = SKP_SMULBB( FIND_PITCH_LPC_WIN_MS_2_SF, fs_kHz );\r
293         }\r
294         if( psEnc->sCmn.fs_kHz == 16 ) {\r
295             psEnc->sCmn.mu_LTP_Q9 = SILK_FIX_CONST( MU_LTP_QUANT_WB, 9 );\r
296             psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform8_iCDF;\r
297         } else if( psEnc->sCmn.fs_kHz == 12 ) {\r
298             psEnc->sCmn.mu_LTP_Q9 = SILK_FIX_CONST( MU_LTP_QUANT_MB, 9 );\r
299             psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform6_iCDF;\r
300         } else {\r
301             psEnc->sCmn.mu_LTP_Q9 = SILK_FIX_CONST( MU_LTP_QUANT_NB, 9 );\r
302             psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform4_iCDF;\r
303         }\r
304     }\r
305 \r
306     /* Check that settings are valid */\r
307     SKP_assert( ( psEnc->sCmn.subfr_length * psEnc->sCmn.nb_subfr ) == psEnc->sCmn.frame_length );\r
308  \r
309     return ret;\r
310 }\r
311 \r
312 SKP_int silk_setup_complexity(\r
313     silk_encoder_state              *psEncC,            /* I/O                      */\r
314     SKP_int                         Complexity          /* I                        */\r
315 )\r
316 {\r
317     SKP_int ret = 0;\r
318 \r
319     /* Set encoding complexity */\r
320     SKP_assert( Complexity >= 0 && Complexity <= 10 );\r
321     if( Complexity < 2 ) {\r
322         psEncC->pitchEstimationComplexity       = SILK_PE_MIN_COMPLEX;\r
323         psEncC->pitchEstimationThreshold_Q16    = SILK_FIX_CONST( 0.8, 16 );\r
324         psEncC->pitchEstimationLPCOrder         = 6;\r
325         psEncC->shapingLPCOrder                 = 8;\r
326         psEncC->la_shape                        = 3 * psEncC->fs_kHz;\r
327         psEncC->nStatesDelayedDecision          = 1;\r
328         psEncC->useInterpolatedNLSFs            = 0;\r
329         psEncC->LTPQuantLowComplexity           = 1;\r
330         psEncC->NLSF_MSVQ_Survivors             = 2;\r
331         psEncC->warping_Q16                     = 0;\r
332     } else if( Complexity < 4 ) {\r
333         psEncC->pitchEstimationComplexity       = SILK_PE_MID_COMPLEX;\r
334         psEncC->pitchEstimationThreshold_Q16    = SILK_FIX_CONST( 0.76, 16 );\r
335         psEncC->pitchEstimationLPCOrder         = 8;\r
336         psEncC->shapingLPCOrder                 = 10;\r
337         psEncC->la_shape                        = 5 * psEncC->fs_kHz;\r
338         psEncC->nStatesDelayedDecision          = 1;\r
339         psEncC->useInterpolatedNLSFs            = 1;\r
340         psEncC->LTPQuantLowComplexity           = 0;\r
341         psEncC->NLSF_MSVQ_Survivors             = 4;\r
342         psEncC->warping_Q16                     = 0;\r
343     } else if( Complexity < 6 ) {\r
344         psEncC->pitchEstimationComplexity       = SILK_PE_MID_COMPLEX;\r
345         psEncC->pitchEstimationThreshold_Q16    = SILK_FIX_CONST( 0.74, 16 );\r
346         psEncC->pitchEstimationLPCOrder         = 10;\r
347         psEncC->shapingLPCOrder                 = 12;\r
348         psEncC->la_shape                        = 5 * psEncC->fs_kHz;\r
349         psEncC->nStatesDelayedDecision          = 2;\r
350         psEncC->useInterpolatedNLSFs            = 0;\r
351         psEncC->LTPQuantLowComplexity           = 0;\r
352         psEncC->NLSF_MSVQ_Survivors             = 8;\r
353         psEncC->warping_Q16                     = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 );\r
354     } else if( Complexity < 8 ) {\r
355         psEncC->pitchEstimationComplexity       = SILK_PE_MID_COMPLEX;\r
356         psEncC->pitchEstimationThreshold_Q16    = SILK_FIX_CONST( 0.72, 16 );\r
357         psEncC->pitchEstimationLPCOrder         = 12;\r
358         psEncC->shapingLPCOrder                 = 14;\r
359         psEncC->la_shape                        = 5 * psEncC->fs_kHz;\r
360         psEncC->nStatesDelayedDecision          = 3;\r
361         psEncC->useInterpolatedNLSFs            = 0;\r
362         psEncC->LTPQuantLowComplexity           = 0;\r
363         psEncC->NLSF_MSVQ_Survivors             = 16;\r
364         psEncC->warping_Q16                     = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 );\r
365     } else {\r
366         psEncC->pitchEstimationComplexity       = SILK_PE_MAX_COMPLEX;\r
367         psEncC->pitchEstimationThreshold_Q16    = SILK_FIX_CONST( 0.7, 16 );\r
368         psEncC->pitchEstimationLPCOrder         = 16;\r
369         psEncC->shapingLPCOrder                 = 16;\r
370         psEncC->la_shape                        = 5 * psEncC->fs_kHz;\r
371         psEncC->nStatesDelayedDecision          = MAX_DEL_DEC_STATES;\r
372         psEncC->useInterpolatedNLSFs            = 1;\r
373         psEncC->LTPQuantLowComplexity           = 0;\r
374         psEncC->NLSF_MSVQ_Survivors             = 32;\r
375         psEncC->warping_Q16                     = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 );\r
376     }\r
377 \r
378     /* Do not allow higher pitch estimation LPC order than predict LPC order */\r
379     psEncC->pitchEstimationLPCOrder = SKP_min_int( psEncC->pitchEstimationLPCOrder, psEncC->predictLPCOrder );\r
380     psEncC->shapeWinLength          = SUB_FRAME_LENGTH_MS * psEncC->fs_kHz + 2 * psEncC->la_shape;\r
381     psEncC->Complexity              = Complexity;\r
382 \r
383     SKP_assert( psEncC->pitchEstimationLPCOrder <= MAX_FIND_PITCH_LPC_ORDER );\r
384     SKP_assert( psEncC->shapingLPCOrder         <= MAX_SHAPE_LPC_ORDER      );\r
385     SKP_assert( psEncC->nStatesDelayedDecision  <= MAX_DEL_DEC_STATES       );\r
386     SKP_assert( psEncC->warping_Q16             <= 32767                    );\r
387     SKP_assert( psEncC->la_shape                <= LA_SHAPE_MAX             );\r
388     SKP_assert( psEncC->shapeWinLength          <= SHAPE_LPC_WIN_MAX        );\r
389     SKP_assert( psEncC->NLSF_MSVQ_Survivors     <= NLSF_VQ_MAX_SURVIVORS    );\r
390 \r
391     return ret;\r
392 }\r
393 \r
394 SKP_INLINE SKP_int silk_setup_LBRR(\r
395     silk_encoder_state          *psEncC,            /* I/O                      */\r
396     const SKP_int32                 TargetRate_bps      /* I                        */\r
397 )\r
398 {\r
399     SKP_int   ret = SILK_NO_ERROR;\r
400     SKP_int32 LBRR_rate_thres_bps;\r
401 \r
402     psEncC->LBRR_enabled = 0;\r
403     if( psEncC->useInBandFEC && psEncC->PacketLoss_perc > 0 ) {\r
404         if( psEncC->fs_kHz == 8 ) {\r
405             LBRR_rate_thres_bps = LBRR_NB_MIN_RATE_BPS;\r
406         } else if( psEncC->fs_kHz == 12 ) {\r
407             LBRR_rate_thres_bps = LBRR_MB_MIN_RATE_BPS;\r
408         } else {\r
409             LBRR_rate_thres_bps = LBRR_WB_MIN_RATE_BPS;\r
410         }\r
411         LBRR_rate_thres_bps = SKP_SMULWB( SKP_MUL( LBRR_rate_thres_bps, 125 - SKP_min( psEncC->PacketLoss_perc, 25 ) ), SILK_FIX_CONST( 0.01, 16 ) );\r
412 \r
413         if( TargetRate_bps > LBRR_rate_thres_bps ) {\r
414             /* Set gain increase for coding LBRR excitation */\r
415             psEncC->LBRR_enabled = 1;\r
416             psEncC->LBRR_GainIncreases = SKP_max_int( 7 - SKP_SMULWB( psEncC->PacketLoss_perc, SILK_FIX_CONST( 0.4, 16 ) ), 2 );\r
417         }\r
418     }\r
419 \r
420     return ret;\r
421 }\r