12bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/*********************************************************************** 22bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianCopyright (c) 2006-2011, Skype Limited. All rights reserved. 32bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianRedistribution and use in source and binary forms, with or without 42bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianmodification, are permitted provided that the following conditions 52bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianare met: 62bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian- Redistributions of source code must retain the above copyright notice, 72bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianthis list of conditions and the following disclaimer. 82bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian- Redistributions in binary form must reproduce the above copyright 92bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramaniannotice, this list of conditions and the following disclaimer in the 102bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramaniandocumentation and/or other materials provided with the distribution. 112bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian- Neither the name of Internet Society, IETF or IETF Trust, nor the 122bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramaniannames of specific contributors, may be used to endorse or promote 132bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianproducts derived from this software without specific prior written 142bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianpermission. 152bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianTHIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 162bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianAND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 172bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianIMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 182bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 192bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianLIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 202bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianCONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 212bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianSUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 222bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianINTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 232bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianCONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 242bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 252bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh VenkatasubramanianPOSSIBILITY OF SUCH DAMAGE. 262bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian***********************************************************************/ 272bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 282bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#ifdef HAVE_CONFIG_H 292bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "config.h" 302bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#endif 312bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#ifdef FIXED_POINT 322bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "main_FIX.h" 332bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#define silk_encoder_state_Fxx silk_encoder_state_FIX 342bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#else 352bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "main_FLP.h" 362bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#define silk_encoder_state_Fxx silk_encoder_state_FLP 372bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#endif 382bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "stack_alloc.h" 392bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "tuning_parameters.h" 402bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "pitch_est_defines.h" 412bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 422bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianstatic opus_int silk_setup_resamplers( 432bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder_state_Fxx *psEnc, /* I/O */ 442bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int fs_kHz /* I */ 452bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian); 462bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 472bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianstatic opus_int silk_setup_fs( 482bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder_state_Fxx *psEnc, /* I/O */ 492bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int fs_kHz, /* I */ 502bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int PacketSize_ms /* I */ 512bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian); 522bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 532bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianstatic opus_int silk_setup_complexity( 542bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder_state *psEncC, /* I/O */ 552bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int Complexity /* I */ 562bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian); 572bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 582bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianstatic OPUS_INLINE opus_int silk_setup_LBRR( 592bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder_state *psEncC, /* I/O */ 602bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian const opus_int32 TargetRate_bps /* I */ 612bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian); 622bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 632bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 642bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/* Control encoder */ 652bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianopus_int silk_control_encoder( 662bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk encoder state */ 672bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_EncControlStruct *encControl, /* I Control structure */ 682bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian const opus_int32 TargetRate_bps, /* I Target max bitrate (bps) */ 692bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian const opus_int allow_bw_switch, /* I Flag to allow switching audio bandwidth */ 702bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian const opus_int channelNb, /* I Channel number */ 712bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian const opus_int force_fs_kHz 722bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian) 732bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian{ 742bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int fs_kHz, ret = 0; 752bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 762bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.useDTX = encControl->useDTX; 772bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.useCBR = encControl->useCBR; 782bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.API_fs_Hz = encControl->API_sampleRate; 792bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.maxInternal_fs_Hz = encControl->maxInternalSampleRate; 802bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.minInternal_fs_Hz = encControl->minInternalSampleRate; 812bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.desiredInternal_fs_Hz = encControl->desiredInternalSampleRate; 822bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.useInBandFEC = encControl->useInBandFEC; 832bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.nChannelsAPI = encControl->nChannelsAPI; 842bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.nChannelsInternal = encControl->nChannelsInternal; 852bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.allow_bandwidth_switch = allow_bw_switch; 862bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.channelNb = channelNb; 872bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 882bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.controlled_since_last_payload != 0 && psEnc->sCmn.prefillFlag == 0 ) { 892bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.API_fs_Hz != psEnc->sCmn.prev_API_fs_Hz && psEnc->sCmn.fs_kHz > 0 ) { 902bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Change in API sampling rate in the middle of encoding a packet */ 912bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_setup_resamplers( psEnc, psEnc->sCmn.fs_kHz ); 922bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 932bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return ret; 942bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 952bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 962bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Beyond this point we know that there are no previously coded frames in the payload buffer */ 972bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 982bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /********************************************/ 992bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Determine internal sampling rate */ 1002bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /********************************************/ 1012bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian fs_kHz = silk_control_audio_bandwidth( &psEnc->sCmn, encControl ); 1022bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( force_fs_kHz ) { 1032bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian fs_kHz = force_fs_kHz; 1042bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 1052bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /********************************************/ 1062bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Prepare resampler and buffered data */ 1072bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /********************************************/ 1082bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_setup_resamplers( psEnc, fs_kHz ); 1092bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1102bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /********************************************/ 1112bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Set internal sampling frequency */ 1122bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /********************************************/ 1132bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_setup_fs( psEnc, fs_kHz, encControl->payloadSize_ms ); 1142bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1152bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /********************************************/ 1162bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Set encoding complexity */ 1172bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /********************************************/ 1182bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_setup_complexity( &psEnc->sCmn, encControl->complexity ); 1192bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1202bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /********************************************/ 1212bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Set packet loss rate measured by farend */ 1222bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /********************************************/ 1232bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.PacketLoss_perc = encControl->packetLossPercentage; 1242bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1252bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /********************************************/ 1262bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Set LBRR usage */ 1272bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /********************************************/ 1282bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_setup_LBRR( &psEnc->sCmn, TargetRate_bps ); 1292bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1302bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.controlled_since_last_payload = 1; 1312bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1322bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return ret; 1332bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian} 1342bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1352bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianstatic opus_int silk_setup_resamplers( 1362bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder_state_Fxx *psEnc, /* I/O */ 1372bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int fs_kHz /* I */ 1382bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian) 1392bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian{ 1402bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int ret = SILK_NO_ERROR; 1412bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian SAVE_STACK; 1422bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1432bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.fs_kHz != fs_kHz || psEnc->sCmn.prev_API_fs_Hz != psEnc->sCmn.API_fs_Hz ) 1442bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian { 1452bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.fs_kHz == 0 ) { 1462bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Initialize the resampler for enc_API.c preparing resampling from API_fs_Hz to fs_kHz */ 1472bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_resampler_init( &psEnc->sCmn.resampler_state, psEnc->sCmn.API_fs_Hz, fs_kHz * 1000, 1 ); 1482bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 1492bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian VARDECL( opus_int16, x_buf_API_fs_Hz ); 1502bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian VARDECL( silk_resampler_state_struct, temp_resampler_state ); 1512bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#ifdef FIXED_POINT 1522bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int16 *x_bufFIX = psEnc->x_buf; 1532bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#else 1542bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian VARDECL( opus_int16, x_bufFIX ); 1552bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int32 new_buf_samples; 1562bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#endif 1572bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int32 api_buf_samples; 1582bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int32 old_buf_samples; 1592bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int32 buf_length_ms; 1602bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1612bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian buf_length_ms = silk_LSHIFT( psEnc->sCmn.nb_subfr * 5, 1 ) + LA_SHAPE_MS; 1622bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian old_buf_samples = buf_length_ms * psEnc->sCmn.fs_kHz; 1632bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1642bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#ifndef FIXED_POINT 1652bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian new_buf_samples = buf_length_ms * fs_kHz; 1662bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ALLOC( x_bufFIX, silk_max( old_buf_samples, new_buf_samples ), 1672bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int16 ); 1682bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_float2short_array( x_bufFIX, psEnc->x_buf, old_buf_samples ); 1692bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#endif 1702bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1712bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Initialize resampler for temporary resampling of x_buf data to API_fs_Hz */ 1722bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ALLOC( temp_resampler_state, 1, silk_resampler_state_struct ); 1732bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_resampler_init( temp_resampler_state, silk_SMULBB( psEnc->sCmn.fs_kHz, 1000 ), psEnc->sCmn.API_fs_Hz, 0 ); 1742bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1752bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Calculate number of samples to temporarily upsample */ 1762bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian api_buf_samples = buf_length_ms * silk_DIV32_16( psEnc->sCmn.API_fs_Hz, 1000 ); 1772bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1782bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Temporary resampling of x_buf data to API_fs_Hz */ 1792bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ALLOC( x_buf_API_fs_Hz, api_buf_samples, opus_int16 ); 1802bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_resampler( temp_resampler_state, x_buf_API_fs_Hz, x_bufFIX, old_buf_samples ); 1812bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1822bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Initialize the resampler for enc_API.c preparing resampling from API_fs_Hz to fs_kHz */ 1832bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_resampler_init( &psEnc->sCmn.resampler_state, psEnc->sCmn.API_fs_Hz, silk_SMULBB( fs_kHz, 1000 ), 1 ); 1842bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1852bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Correct resampler state by resampling buffered data from API_fs_Hz to fs_kHz */ 1862bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_resampler( &psEnc->sCmn.resampler_state, x_bufFIX, x_buf_API_fs_Hz, api_buf_samples ); 1872bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1882bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#ifndef FIXED_POINT 1892bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_short2float_array( psEnc->x_buf, x_bufFIX, new_buf_samples); 1902bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#endif 1912bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 1922bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 1932bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1942bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.prev_API_fs_Hz = psEnc->sCmn.API_fs_Hz; 1952bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1962bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian RESTORE_STACK; 1972bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return ret; 1982bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian} 1992bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 2002bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianstatic opus_int silk_setup_fs( 2012bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder_state_Fxx *psEnc, /* I/O */ 2022bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int fs_kHz, /* I */ 2032bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int PacketSize_ms /* I */ 2042bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian) 2052bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian{ 2062bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int ret = SILK_NO_ERROR; 2072bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 2082bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Set packet size */ 2092bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( PacketSize_ms != psEnc->sCmn.PacketSize_ms ) { 2102bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( ( PacketSize_ms != 10 ) && 2112bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ( PacketSize_ms != 20 ) && 2122bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ( PacketSize_ms != 40 ) && 2132bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ( PacketSize_ms != 60 ) ) { 2142bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret = SILK_ENC_PACKET_SIZE_NOT_SUPPORTED; 2152bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2162bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( PacketSize_ms <= 10 ) { 2172bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.nFramesPerPacket = 1; 2182bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.nb_subfr = PacketSize_ms == 10 ? 2 : 1; 2192bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.frame_length = silk_SMULBB( PacketSize_ms, fs_kHz ); 2202bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS_2_SF, fs_kHz ); 2212bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.fs_kHz == 8 ) { 2222bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_NB_iCDF; 2232bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 2242bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_iCDF; 2252bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2262bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 2272bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.nFramesPerPacket = silk_DIV32_16( PacketSize_ms, MAX_FRAME_LENGTH_MS ); 2282bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.nb_subfr = MAX_NB_SUBFR; 2292bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.frame_length = silk_SMULBB( 20, fs_kHz ); 2302bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS, fs_kHz ); 2312bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.fs_kHz == 8 ) { 2322bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_NB_iCDF; 2332bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 2342bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_iCDF; 2352bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2362bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2372bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.PacketSize_ms = PacketSize_ms; 2382bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.TargetRate_bps = 0; /* trigger new SNR computation */ 2392bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2402bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 2412bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Set internal sampling frequency */ 2422bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( fs_kHz == 8 || fs_kHz == 12 || fs_kHz == 16 ); 2432bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( psEnc->sCmn.nb_subfr == 2 || psEnc->sCmn.nb_subfr == 4 ); 2442bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.fs_kHz != fs_kHz ) { 2452bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* reset part of the state */ 2462bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( &psEnc->sShape, 0, sizeof( psEnc->sShape ) ); 2472bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( &psEnc->sPrefilt, 0, sizeof( psEnc->sPrefilt ) ); 2482bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( &psEnc->sCmn.sNSQ, 0, sizeof( psEnc->sCmn.sNSQ ) ); 2492bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( psEnc->sCmn.prev_NLSFq_Q15, 0, sizeof( psEnc->sCmn.prev_NLSFq_Q15 ) ); 2502bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( &psEnc->sCmn.sLP.In_LP_State, 0, sizeof( psEnc->sCmn.sLP.In_LP_State ) ); 2512bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.inputBufIx = 0; 2522bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.nFramesEncoded = 0; 2532bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.TargetRate_bps = 0; /* trigger new SNR computation */ 2542bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 2552bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Initialize non-zero parameters */ 2562bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.prevLag = 100; 2572bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.first_frame_after_reset = 1; 2582bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sPrefilt.lagPrev = 100; 2592bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sShape.LastGainIndex = 10; 2602bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.sNSQ.lagPrev = 100; 2612bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.sNSQ.prev_gain_Q16 = 65536; 2622bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.prevSignalType = TYPE_NO_VOICE_ACTIVITY; 2632bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 2642bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.fs_kHz = fs_kHz; 2652bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.fs_kHz == 8 ) { 2662bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) { 2672bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_NB_iCDF; 2682bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 2692bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_NB_iCDF; 2702bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2712bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 2722bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) { 2732bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_iCDF; 2742bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 2752bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_iCDF; 2762bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2772bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2782bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.fs_kHz == 8 || psEnc->sCmn.fs_kHz == 12 ) { 2792bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.predictLPCOrder = MIN_LPC_ORDER; 2802bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.psNLSF_CB = &silk_NLSF_CB_NB_MB; 2812bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 2822bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.predictLPCOrder = MAX_LPC_ORDER; 2832bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.psNLSF_CB = &silk_NLSF_CB_WB; 2842bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2852bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.subfr_length = SUB_FRAME_LENGTH_MS * fs_kHz; 2862bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.frame_length = silk_SMULBB( psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr ); 2872bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.ltp_mem_length = silk_SMULBB( LTP_MEM_LENGTH_MS, fs_kHz ); 2882bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.la_pitch = silk_SMULBB( LA_PITCH_MS, fs_kHz ); 2892bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.max_pitch_lag = silk_SMULBB( 18, fs_kHz ); 2902bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) { 2912bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS, fs_kHz ); 2922bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 2932bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS_2_SF, fs_kHz ); 2942bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2952bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sCmn.fs_kHz == 16 ) { 2962bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.mu_LTP_Q9 = SILK_FIX_CONST( MU_LTP_QUANT_WB, 9 ); 2972bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform8_iCDF; 2982bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else if( psEnc->sCmn.fs_kHz == 12 ) { 2992bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.mu_LTP_Q9 = SILK_FIX_CONST( MU_LTP_QUANT_MB, 9 ); 3002bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform6_iCDF; 3012bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 3022bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.mu_LTP_Q9 = SILK_FIX_CONST( MU_LTP_QUANT_NB, 9 ); 3032bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform4_iCDF; 3042bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3052bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3062bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3072bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Check that settings are valid */ 3082bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( ( psEnc->sCmn.subfr_length * psEnc->sCmn.nb_subfr ) == psEnc->sCmn.frame_length ); 3092bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3102bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return ret; 3112bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian} 3122bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3132bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianstatic opus_int silk_setup_complexity( 3142bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder_state *psEncC, /* I/O */ 3152bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int Complexity /* I */ 3162bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian) 3172bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian{ 3182bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int ret = 0; 3192bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3202bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Set encoding complexity */ 3212bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( Complexity >= 0 && Complexity <= 10 ); 3222bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( Complexity < 2 ) { 3232bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationComplexity = SILK_PE_MIN_COMPLEX; 3242bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.8, 16 ); 3252bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationLPCOrder = 6; 3262bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->shapingLPCOrder = 8; 3272bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->la_shape = 3 * psEncC->fs_kHz; 3282bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->nStatesDelayedDecision = 1; 3292bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->useInterpolatedNLSFs = 0; 3302bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->LTPQuantLowComplexity = 1; 3312bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->NLSF_MSVQ_Survivors = 2; 3322bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->warping_Q16 = 0; 3332bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else if( Complexity < 4 ) { 3342bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX; 3352bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.76, 16 ); 3362bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationLPCOrder = 8; 3372bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->shapingLPCOrder = 10; 3382bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->la_shape = 5 * psEncC->fs_kHz; 3392bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->nStatesDelayedDecision = 1; 3402bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->useInterpolatedNLSFs = 0; 3412bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->LTPQuantLowComplexity = 0; 3422bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->NLSF_MSVQ_Survivors = 4; 3432bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->warping_Q16 = 0; 3442bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else if( Complexity < 6 ) { 3452bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX; 3462bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.74, 16 ); 3472bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationLPCOrder = 10; 3482bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->shapingLPCOrder = 12; 3492bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->la_shape = 5 * psEncC->fs_kHz; 3502bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->nStatesDelayedDecision = 2; 3512bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->useInterpolatedNLSFs = 1; 3522bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->LTPQuantLowComplexity = 0; 3532bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->NLSF_MSVQ_Survivors = 8; 3542bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->warping_Q16 = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 ); 3552bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else if( Complexity < 8 ) { 3562bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX; 3572bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.72, 16 ); 3582bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationLPCOrder = 12; 3592bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->shapingLPCOrder = 14; 3602bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->la_shape = 5 * psEncC->fs_kHz; 3612bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->nStatesDelayedDecision = 3; 3622bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->useInterpolatedNLSFs = 1; 3632bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->LTPQuantLowComplexity = 0; 3642bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->NLSF_MSVQ_Survivors = 16; 3652bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->warping_Q16 = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 ); 3662bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 3672bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationComplexity = SILK_PE_MAX_COMPLEX; 3682bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.7, 16 ); 3692bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationLPCOrder = 16; 3702bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->shapingLPCOrder = 16; 3712bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->la_shape = 5 * psEncC->fs_kHz; 3722bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->nStatesDelayedDecision = MAX_DEL_DEC_STATES; 3732bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->useInterpolatedNLSFs = 1; 3742bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->LTPQuantLowComplexity = 0; 3752bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->NLSF_MSVQ_Survivors = 32; 3762bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->warping_Q16 = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 ); 3772bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3782bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3792bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Do not allow higher pitch estimation LPC order than predict LPC order */ 3802bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->pitchEstimationLPCOrder = silk_min_int( psEncC->pitchEstimationLPCOrder, psEncC->predictLPCOrder ); 3812bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->shapeWinLength = SUB_FRAME_LENGTH_MS * psEncC->fs_kHz + 2 * psEncC->la_shape; 3822bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->Complexity = Complexity; 3832bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3842bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( psEncC->pitchEstimationLPCOrder <= MAX_FIND_PITCH_LPC_ORDER ); 3852bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( psEncC->shapingLPCOrder <= MAX_SHAPE_LPC_ORDER ); 3862bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( psEncC->nStatesDelayedDecision <= MAX_DEL_DEC_STATES ); 3872bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( psEncC->warping_Q16 <= 32767 ); 3882bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( psEncC->la_shape <= LA_SHAPE_MAX ); 3892bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( psEncC->shapeWinLength <= SHAPE_LPC_WIN_MAX ); 3902bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( psEncC->NLSF_MSVQ_Survivors <= NLSF_VQ_MAX_SURVIVORS ); 3912bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3922bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return ret; 3932bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian} 3942bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3952bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianstatic OPUS_INLINE opus_int silk_setup_LBRR( 3962bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder_state *psEncC, /* I/O */ 3972bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian const opus_int32 TargetRate_bps /* I */ 3982bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian) 3992bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian{ 400c91ee5b5642fcc4969150f73d5f6848f88bf1638flim opus_int LBRR_in_previous_packet, ret = SILK_NO_ERROR; 4012bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int32 LBRR_rate_thres_bps; 4022bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 403c91ee5b5642fcc4969150f73d5f6848f88bf1638flim LBRR_in_previous_packet = psEncC->LBRR_enabled; 4042bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->LBRR_enabled = 0; 4052bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEncC->useInBandFEC && psEncC->PacketLoss_perc > 0 ) { 4062bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEncC->fs_kHz == 8 ) { 4072bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian LBRR_rate_thres_bps = LBRR_NB_MIN_RATE_BPS; 4082bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else if( psEncC->fs_kHz == 12 ) { 4092bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian LBRR_rate_thres_bps = LBRR_MB_MIN_RATE_BPS; 4102bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 4112bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian LBRR_rate_thres_bps = LBRR_WB_MIN_RATE_BPS; 4122bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4132bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian LBRR_rate_thres_bps = silk_SMULWB( silk_MUL( LBRR_rate_thres_bps, 125 - silk_min( psEncC->PacketLoss_perc, 25 ) ), SILK_FIX_CONST( 0.01, 16 ) ); 4142bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 4152bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( TargetRate_bps > LBRR_rate_thres_bps ) { 4162bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Set gain increase for coding LBRR excitation */ 417c91ee5b5642fcc4969150f73d5f6848f88bf1638flim if( LBRR_in_previous_packet == 0 ) { 418c91ee5b5642fcc4969150f73d5f6848f88bf1638flim /* Previous packet did not have LBRR, and was therefore coded at a higher bitrate */ 419c91ee5b5642fcc4969150f73d5f6848f88bf1638flim psEncC->LBRR_GainIncreases = 7; 420c91ee5b5642fcc4969150f73d5f6848f88bf1638flim } else { 421c91ee5b5642fcc4969150f73d5f6848f88bf1638flim psEncC->LBRR_GainIncreases = silk_max_int( 7 - silk_SMULWB( (opus_int32)psEncC->PacketLoss_perc, SILK_FIX_CONST( 0.4, 16 ) ), 2 ); 422c91ee5b5642fcc4969150f73d5f6848f88bf1638flim } 4232bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEncC->LBRR_enabled = 1; 4242bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4252bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4262bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 4272bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return ret; 4282bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian} 429