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#include "define.h" 322bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "API.h" 332bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "control.h" 342bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "typedef.h" 352bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "stack_alloc.h" 362bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "structs.h" 372bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "tuning_parameters.h" 382bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#ifdef FIXED_POINT 392bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "main_FIX.h" 402bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#else 412bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#include "main_FLP.h" 422bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian#endif 432bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 442bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/***************************************/ 452bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/* Read control structure from encoder */ 462bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/***************************************/ 472bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianstatic opus_int silk_QueryEncoder( /* O Returns error code */ 482bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian const void *encState, /* I State */ 492bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_EncControlStruct *encStatus /* O Encoder Status */ 502bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian); 512bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 522bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/****************************************/ 532bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/* Encoder functions */ 542bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/****************************************/ 552bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 562bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianopus_int silk_Get_Encoder_Size( /* O Returns error code */ 572bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int *encSizeBytes /* O Number of bytes in SILK encoder state */ 582bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian) 592bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian{ 602bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int ret = SILK_NO_ERROR; 612bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 622bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian *encSizeBytes = sizeof( silk_encoder ); 632bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 642bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return ret; 652bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian} 662bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 672bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/*************************/ 682bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/* Init or Reset encoder */ 692bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/*************************/ 702bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianopus_int silk_InitEncoder( /* O Returns error code */ 712bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian void *encState, /* I/O State */ 722bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian int arch, /* I Run-time architecture */ 732bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_EncControlStruct *encStatus /* O Encoder Status */ 742bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian) 752bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian{ 762bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder *psEnc; 772bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int n, ret = SILK_NO_ERROR; 782bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 792bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc = (silk_encoder *)encState; 802bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 812bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Reset encoder */ 822bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( psEnc, 0, sizeof( silk_encoder ) ); 832bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < ENCODER_NUM_CHANNELS; n++ ) { 842bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( ret += silk_init_encoder( &psEnc->state_Fxx[ n ], arch ) ) { 852bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( 0 ); 862bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 872bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 882bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 892bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->nChannelsAPI = 1; 902bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->nChannelsInternal = 1; 912bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 922bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Read control structure */ 932bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( ret += silk_QueryEncoder( encState, encStatus ) ) { 942bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( 0 ); 952bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 962bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 972bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return ret; 982bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian} 992bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1002bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/***************************************/ 1012bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/* Read control structure from encoder */ 1022bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/***************************************/ 1032bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianstatic opus_int silk_QueryEncoder( /* O Returns error code */ 1042bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian const void *encState, /* I State */ 1052bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_EncControlStruct *encStatus /* O Encoder Status */ 1062bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian) 1072bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian{ 1082bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int ret = SILK_NO_ERROR; 1092bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder_state_Fxx *state_Fxx; 1102bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder *psEnc = (silk_encoder *)encState; 1112bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1122bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian state_Fxx = psEnc->state_Fxx; 1132bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1142bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->nChannelsAPI = psEnc->nChannelsAPI; 1152bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->nChannelsInternal = psEnc->nChannelsInternal; 1162bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->API_sampleRate = state_Fxx[ 0 ].sCmn.API_fs_Hz; 1172bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->maxInternalSampleRate = state_Fxx[ 0 ].sCmn.maxInternal_fs_Hz; 1182bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->minInternalSampleRate = state_Fxx[ 0 ].sCmn.minInternal_fs_Hz; 1192bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->desiredInternalSampleRate = state_Fxx[ 0 ].sCmn.desiredInternal_fs_Hz; 1202bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->payloadSize_ms = state_Fxx[ 0 ].sCmn.PacketSize_ms; 1212bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->bitRate = state_Fxx[ 0 ].sCmn.TargetRate_bps; 1222bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->packetLossPercentage = state_Fxx[ 0 ].sCmn.PacketLoss_perc; 1232bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->complexity = state_Fxx[ 0 ].sCmn.Complexity; 1242bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->useInBandFEC = state_Fxx[ 0 ].sCmn.useInBandFEC; 1252bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->useDTX = state_Fxx[ 0 ].sCmn.useDTX; 1262bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->useCBR = state_Fxx[ 0 ].sCmn.useCBR; 1272bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->internalSampleRate = silk_SMULBB( state_Fxx[ 0 ].sCmn.fs_kHz, 1000 ); 1282bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->allowBandwidthSwitch = state_Fxx[ 0 ].sCmn.allow_bandwidth_switch; 1292bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encStatus->inWBmodeWithoutVariableLP = state_Fxx[ 0 ].sCmn.fs_kHz == 16 && state_Fxx[ 0 ].sCmn.sLP.mode == 0; 1302bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1312bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return ret; 1322bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian} 1332bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1342bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1352bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/**************************/ 1362bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/* Encode frame with Silk */ 1372bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/**************************/ 1382bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/* Note: if prefillFlag is set, the input must contain 10 ms of audio, irrespective of what */ 1392bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian/* encControl->payloadSize_ms is set to */ 1402bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanianopus_int silk_Encode( /* O Returns error code */ 1412bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian void *encState, /* I/O State */ 1422bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_EncControlStruct *encControl, /* I Control status */ 1432bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian const opus_int16 *samplesIn, /* I Speech sample input vector */ 1442bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int nSamplesIn, /* I Number of samples in input vector */ 1452bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ec_enc *psRangeEnc, /* I/O Compressor data structure */ 1462bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int32 *nBytesOut, /* I/O Number of bytes in payload (input: Max bytes) */ 1472bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian const opus_int prefillFlag /* I Flag to indicate prefilling buffers no coding */ 1482bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian) 1492bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian{ 1502bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int n, i, nBits, flags, tmp_payloadSize_ms = 0, tmp_complexity = 0, ret = 0; 1512bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int nSamplesToBuffer, nSamplesToBufferMax, nBlocksOf10ms; 1522bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int nSamplesFromInput = 0, nSamplesFromInputMax; 1532bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int speech_act_thr_for_switch_Q8; 1542bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int32 TargetRate_bps, MStargetRates_bps[ 2 ], channelRate_bps, LBRR_symbol, sum; 1552bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encoder *psEnc = ( silk_encoder * )encState; 1562bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian VARDECL( opus_int16, buf ); 1572bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int transition, curr_block, tot_blocks; 1582bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian SAVE_STACK; 1592bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1602bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if (encControl->reducedDependency) 1612bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian { 1622bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[0].sCmn.first_frame_after_reset = 1; 1632bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[1].sCmn.first_frame_after_reset = 1; 1642bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 1652bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded = psEnc->state_Fxx[ 1 ].sCmn.nFramesEncoded = 0; 1662bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1672bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Check values in encoder control structure */ 1682bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( ( ret = check_control_input( encControl ) != 0 ) ) { 1692bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( 0 ); 1702bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian RESTORE_STACK; 1712bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return ret; 1722bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 1732bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1742bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encControl->switchReady = 0; 1752bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1762bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( encControl->nChannelsInternal > psEnc->nChannelsInternal ) { 1772bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Mono -> Stereo transition: init state of second channel and stereo state */ 1782bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_init_encoder( &psEnc->state_Fxx[ 1 ], psEnc->state_Fxx[ 0 ].sCmn.arch ); 1792bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( psEnc->sStereo.pred_prev_Q13, 0, sizeof( psEnc->sStereo.pred_prev_Q13 ) ); 1802bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( psEnc->sStereo.sSide, 0, sizeof( psEnc->sStereo.sSide ) ); 1812bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sStereo.mid_side_amp_Q0[ 0 ] = 0; 1822bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sStereo.mid_side_amp_Q0[ 1 ] = 1; 1832bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sStereo.mid_side_amp_Q0[ 2 ] = 0; 1842bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sStereo.mid_side_amp_Q0[ 3 ] = 1; 1852bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sStereo.width_prev_Q14 = 0; 1862bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sStereo.smth_width_Q14 = SILK_FIX_CONST( 1, 14 ); 1872bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->nChannelsAPI == 2 ) { 1882bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memcpy( &psEnc->state_Fxx[ 1 ].sCmn.resampler_state, &psEnc->state_Fxx[ 0 ].sCmn.resampler_state, sizeof( silk_resampler_state_struct ) ); 1892bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memcpy( &psEnc->state_Fxx[ 1 ].sCmn.In_HP_State, &psEnc->state_Fxx[ 0 ].sCmn.In_HP_State, sizeof( psEnc->state_Fxx[ 1 ].sCmn.In_HP_State ) ); 1902bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 1912bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 1922bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1932bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian transition = (encControl->payloadSize_ms != psEnc->state_Fxx[ 0 ].sCmn.PacketSize_ms) || (psEnc->nChannelsInternal != encControl->nChannelsInternal); 1942bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1952bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->nChannelsAPI = encControl->nChannelsAPI; 1962bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->nChannelsInternal = encControl->nChannelsInternal; 1972bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 1982bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian nBlocksOf10ms = silk_DIV32( 100 * nSamplesIn, encControl->API_sampleRate ); 1992bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian tot_blocks = ( nBlocksOf10ms > 1 ) ? nBlocksOf10ms >> 1 : 1; 2002bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian curr_block = 0; 2012bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( prefillFlag ) { 2022bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Only accept input length of 10 ms */ 2032bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( nBlocksOf10ms != 1 ) { 2042bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( 0 ); 2052bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian RESTORE_STACK; 2062bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return SILK_ENC_INPUT_INVALID_NO_OF_SAMPLES; 2072bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2082bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Reset Encoder */ 2092bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < encControl->nChannelsInternal; n++ ) { 2102bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret = silk_init_encoder( &psEnc->state_Fxx[ n ], psEnc->state_Fxx[ n ].sCmn.arch ); 2112bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( !ret ); 2122bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2132bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian tmp_payloadSize_ms = encControl->payloadSize_ms; 2142bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encControl->payloadSize_ms = 10; 2152bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian tmp_complexity = encControl->complexity; 2162bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encControl->complexity = 0; 2172bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < encControl->nChannelsInternal; n++ ) { 2182bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ n ].sCmn.controlled_since_last_payload = 0; 2192bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ n ].sCmn.prefillFlag = 1; 2202bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2212bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 2222bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Only accept input lengths that are a multiple of 10 ms */ 2232bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( nBlocksOf10ms * encControl->API_sampleRate != 100 * nSamplesIn || nSamplesIn < 0 ) { 2242bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( 0 ); 2252bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian RESTORE_STACK; 2262bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return SILK_ENC_INPUT_INVALID_NO_OF_SAMPLES; 2272bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2282bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Make sure no more than one packet can be produced */ 2292bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( 1000 * (opus_int32)nSamplesIn > encControl->payloadSize_ms * encControl->API_sampleRate ) { 2302bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( 0 ); 2312bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian RESTORE_STACK; 2322bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return SILK_ENC_INPUT_INVALID_NO_OF_SAMPLES; 2332bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2342bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2352bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 2362bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian TargetRate_bps = silk_RSHIFT32( encControl->bitRate, encControl->nChannelsInternal - 1 ); 2372bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < encControl->nChannelsInternal; n++ ) { 2382bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Force the side channel to the same rate as the mid */ 2392bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int force_fs_kHz = (n==1) ? psEnc->state_Fxx[0].sCmn.fs_kHz : 0; 2402bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( ( ret = silk_control_encoder( &psEnc->state_Fxx[ n ], encControl, TargetRate_bps, psEnc->allowBandwidthSwitch, n, force_fs_kHz ) ) != 0 ) { 2412bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( 0 ); 2422bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian RESTORE_STACK; 2432bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return ret; 2442bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2452bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->state_Fxx[n].sCmn.first_frame_after_reset || transition ) { 2462bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( i = 0; i < psEnc->state_Fxx[ 0 ].sCmn.nFramesPerPacket; i++ ) { 2472bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ n ].sCmn.LBRR_flags[ i ] = 0; 2482bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2492bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2502bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ n ].sCmn.inDTX = psEnc->state_Fxx[ n ].sCmn.useDTX; 2512bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2522bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( encControl->nChannelsInternal == 1 || psEnc->state_Fxx[ 0 ].sCmn.fs_kHz == psEnc->state_Fxx[ 1 ].sCmn.fs_kHz ); 2532bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 2542bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Input buffering/resampling and encoding */ 2552bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian nSamplesToBufferMax = 2562bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 10 * nBlocksOf10ms * psEnc->state_Fxx[ 0 ].sCmn.fs_kHz; 2572bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian nSamplesFromInputMax = 2582bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_DIV32_16( nSamplesToBufferMax * 2592bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 0 ].sCmn.API_fs_Hz, 2602bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 0 ].sCmn.fs_kHz * 1000 ); 2612bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ALLOC( buf, nSamplesFromInputMax, opus_int16 ); 2622bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian while( 1 ) { 2632bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian nSamplesToBuffer = psEnc->state_Fxx[ 0 ].sCmn.frame_length - psEnc->state_Fxx[ 0 ].sCmn.inputBufIx; 2642bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian nSamplesToBuffer = silk_min( nSamplesToBuffer, nSamplesToBufferMax ); 2652bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian nSamplesFromInput = silk_DIV32_16( nSamplesToBuffer * psEnc->state_Fxx[ 0 ].sCmn.API_fs_Hz, psEnc->state_Fxx[ 0 ].sCmn.fs_kHz * 1000 ); 2662bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Resample and write to buffer */ 2672bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( encControl->nChannelsAPI == 2 && encControl->nChannelsInternal == 2 ) { 2682bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int id = psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded; 2692bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < nSamplesFromInput; n++ ) { 2702bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian buf[ n ] = samplesIn[ 2 * n ]; 2712bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2722bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Making sure to start both resamplers from the same state when switching from mono to stereo */ 2732bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->nPrevChannelsInternal == 1 && id==0 ) { 2742bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memcpy( &psEnc->state_Fxx[ 1 ].sCmn.resampler_state, &psEnc->state_Fxx[ 0 ].sCmn.resampler_state, sizeof(psEnc->state_Fxx[ 1 ].sCmn.resampler_state)); 2752bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2762bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 2772bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_resampler( &psEnc->state_Fxx[ 0 ].sCmn.resampler_state, 2782bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian &psEnc->state_Fxx[ 0 ].sCmn.inputBuf[ psEnc->state_Fxx[ 0 ].sCmn.inputBufIx + 2 ], buf, nSamplesFromInput ); 2792bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 0 ].sCmn.inputBufIx += nSamplesToBuffer; 2802bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 2812bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian nSamplesToBuffer = psEnc->state_Fxx[ 1 ].sCmn.frame_length - psEnc->state_Fxx[ 1 ].sCmn.inputBufIx; 2822bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian nSamplesToBuffer = silk_min( nSamplesToBuffer, 10 * nBlocksOf10ms * psEnc->state_Fxx[ 1 ].sCmn.fs_kHz ); 2832bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < nSamplesFromInput; n++ ) { 2842bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian buf[ n ] = samplesIn[ 2 * n + 1 ]; 2852bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2862bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_resampler( &psEnc->state_Fxx[ 1 ].sCmn.resampler_state, 2872bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian &psEnc->state_Fxx[ 1 ].sCmn.inputBuf[ psEnc->state_Fxx[ 1 ].sCmn.inputBufIx + 2 ], buf, nSamplesFromInput ); 2882bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 2892bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 1 ].sCmn.inputBufIx += nSamplesToBuffer; 2902bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else if( encControl->nChannelsAPI == 2 && encControl->nChannelsInternal == 1 ) { 2912bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Combine left and right channels before resampling */ 2922bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < nSamplesFromInput; n++ ) { 2932bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian sum = samplesIn[ 2 * n ] + samplesIn[ 2 * n + 1 ]; 2942bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian buf[ n ] = (opus_int16)silk_RSHIFT_ROUND( sum, 1 ); 2952bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 2962bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_resampler( &psEnc->state_Fxx[ 0 ].sCmn.resampler_state, 2972bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian &psEnc->state_Fxx[ 0 ].sCmn.inputBuf[ psEnc->state_Fxx[ 0 ].sCmn.inputBufIx + 2 ], buf, nSamplesFromInput ); 2982bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* On the first mono frame, average the results for the two resampler states */ 2992bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->nPrevChannelsInternal == 2 && psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded == 0 ) { 3002bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_resampler( &psEnc->state_Fxx[ 1 ].sCmn.resampler_state, 3012bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian &psEnc->state_Fxx[ 1 ].sCmn.inputBuf[ psEnc->state_Fxx[ 1 ].sCmn.inputBufIx + 2 ], buf, nSamplesFromInput ); 3022bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < psEnc->state_Fxx[ 0 ].sCmn.frame_length; n++ ) { 3032bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 0 ].sCmn.inputBuf[ psEnc->state_Fxx[ 0 ].sCmn.inputBufIx+n+2 ] = 3042bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_RSHIFT(psEnc->state_Fxx[ 0 ].sCmn.inputBuf[ psEnc->state_Fxx[ 0 ].sCmn.inputBufIx+n+2 ] 3052bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian + psEnc->state_Fxx[ 1 ].sCmn.inputBuf[ psEnc->state_Fxx[ 1 ].sCmn.inputBufIx+n+2 ], 1); 3062bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3072bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3082bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 0 ].sCmn.inputBufIx += nSamplesToBuffer; 3092bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 3102bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( encControl->nChannelsAPI == 1 && encControl->nChannelsInternal == 1 ); 3112bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memcpy(buf, samplesIn, nSamplesFromInput*sizeof(opus_int16)); 3122bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ret += silk_resampler( &psEnc->state_Fxx[ 0 ].sCmn.resampler_state, 3132bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian &psEnc->state_Fxx[ 0 ].sCmn.inputBuf[ psEnc->state_Fxx[ 0 ].sCmn.inputBufIx + 2 ], buf, nSamplesFromInput ); 3142bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 0 ].sCmn.inputBufIx += nSamplesToBuffer; 3152bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3162bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3172bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian samplesIn += nSamplesFromInput * encControl->nChannelsAPI; 3182bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian nSamplesIn -= nSamplesFromInput; 3192bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3202bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Default */ 3212bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->allowBandwidthSwitch = 0; 3222bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3232bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Silk encoder */ 3242bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->state_Fxx[ 0 ].sCmn.inputBufIx >= psEnc->state_Fxx[ 0 ].sCmn.frame_length ) { 3252bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Enough data in input buffer, so encode */ 3262bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( psEnc->state_Fxx[ 0 ].sCmn.inputBufIx == psEnc->state_Fxx[ 0 ].sCmn.frame_length ); 3272bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( encControl->nChannelsInternal == 1 || psEnc->state_Fxx[ 1 ].sCmn.inputBufIx == psEnc->state_Fxx[ 1 ].sCmn.frame_length ); 3282bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3292bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Deal with LBRR data */ 3302bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded == 0 && !prefillFlag ) { 3312bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Create space at start of payload for VAD and FEC flags */ 3322bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_uint8 iCDF[ 2 ] = { 0, 0 }; 3332bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian iCDF[ 0 ] = 256 - silk_RSHIFT( 256, ( psEnc->state_Fxx[ 0 ].sCmn.nFramesPerPacket + 1 ) * encControl->nChannelsInternal ); 3342bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ec_enc_icdf( psRangeEnc, 0, iCDF, 8 ); 3352bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3362bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Encode any LBRR data from previous packet */ 3372bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Encode LBRR flags */ 3382bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < encControl->nChannelsInternal; n++ ) { 3392bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian LBRR_symbol = 0; 3402bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( i = 0; i < psEnc->state_Fxx[ n ].sCmn.nFramesPerPacket; i++ ) { 3412bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian LBRR_symbol |= silk_LSHIFT( psEnc->state_Fxx[ n ].sCmn.LBRR_flags[ i ], i ); 3422bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3432bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ n ].sCmn.LBRR_flag = LBRR_symbol > 0 ? 1 : 0; 3442bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( LBRR_symbol && psEnc->state_Fxx[ n ].sCmn.nFramesPerPacket > 1 ) { 3452bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ec_enc_icdf( psRangeEnc, LBRR_symbol - 1, silk_LBRR_flags_iCDF_ptr[ psEnc->state_Fxx[ n ].sCmn.nFramesPerPacket - 2 ], 8 ); 3462bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3472bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3482bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3492bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Code LBRR indices and excitation signals */ 3502bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( i = 0; i < psEnc->state_Fxx[ 0 ].sCmn.nFramesPerPacket; i++ ) { 3512bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < encControl->nChannelsInternal; n++ ) { 3522bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->state_Fxx[ n ].sCmn.LBRR_flags[ i ] ) { 3532bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int condCoding; 3542bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3552bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( encControl->nChannelsInternal == 2 && n == 0 ) { 3562bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_stereo_encode_pred( psRangeEnc, psEnc->sStereo.predIx[ i ] ); 3572bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* For LBRR data there's no need to code the mid-only flag if the side-channel LBRR flag is set */ 3582bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->state_Fxx[ 1 ].sCmn.LBRR_flags[ i ] == 0 ) { 3592bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_stereo_encode_mid_only( psRangeEnc, psEnc->sStereo.mid_only_flags[ i ] ); 3602bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3612bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3622bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Use conditional coding if previous frame available */ 3632bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( i > 0 && psEnc->state_Fxx[ n ].sCmn.LBRR_flags[ i - 1 ] ) { 3642bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian condCoding = CODE_CONDITIONALLY; 3652bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 3662bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian condCoding = CODE_INDEPENDENTLY; 3672bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3682bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encode_indices( &psEnc->state_Fxx[ n ].sCmn, psRangeEnc, i, 1, condCoding ); 3692bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encode_pulses( psRangeEnc, psEnc->state_Fxx[ n ].sCmn.indices_LBRR[i].signalType, psEnc->state_Fxx[ n ].sCmn.indices_LBRR[i].quantOffsetType, 3702bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ n ].sCmn.pulses_LBRR[ i ], psEnc->state_Fxx[ n ].sCmn.frame_length ); 3712bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3722bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3732bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3742bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3752bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Reset LBRR flags */ 3762bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < encControl->nChannelsInternal; n++ ) { 3772bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( psEnc->state_Fxx[ n ].sCmn.LBRR_flags, 0, sizeof( psEnc->state_Fxx[ n ].sCmn.LBRR_flags ) ); 3782bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3792bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3802bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3812bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_HP_variable_cutoff( psEnc->state_Fxx ); 3822bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 3832bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Total target bits for packet */ 3842bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian nBits = silk_DIV32_16( silk_MUL( encControl->bitRate, encControl->payloadSize_ms ), 1000 ); 3852bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Subtract half of the bits already used */ 3862bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( !prefillFlag ) { 3872bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian nBits -= ec_tell( psRangeEnc ) >> 1; 3882bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3892bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Divide by number of uncoded frames left in packet */ 3902bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian nBits = silk_DIV32_16( nBits, psEnc->state_Fxx[ 0 ].sCmn.nFramesPerPacket - psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded ); 3912bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Convert to bits/second */ 3922bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( encControl->payloadSize_ms == 10 ) { 3932bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian TargetRate_bps = silk_SMULBB( nBits, 100 ); 3942bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 3952bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian TargetRate_bps = silk_SMULBB( nBits, 50 ); 3962bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 3972bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Subtract fraction of bits in excess of target in previous packets */ 3982bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian TargetRate_bps -= silk_DIV32_16( silk_MUL( psEnc->nBitsExceeded, 1000 ), BITRESERVOIR_DECAY_TIME_MS ); 3992bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Never exceed input bitrate */ 4002bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian TargetRate_bps = silk_LIMIT( TargetRate_bps, encControl->bitRate, 5000 ); 4012bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 4022bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Convert Left/Right to Mid/Side */ 4032bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( encControl->nChannelsInternal == 2 ) { 4042bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_stereo_LR_to_MS( &psEnc->sStereo, &psEnc->state_Fxx[ 0 ].sCmn.inputBuf[ 2 ], &psEnc->state_Fxx[ 1 ].sCmn.inputBuf[ 2 ], 4052bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->sStereo.predIx[ psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded ], &psEnc->sStereo.mid_only_flags[ psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded ], 4062bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian MStargetRates_bps, TargetRate_bps, psEnc->state_Fxx[ 0 ].sCmn.speech_activity_Q8, encControl->toMono, 4072bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 0 ].sCmn.fs_kHz, psEnc->state_Fxx[ 0 ].sCmn.frame_length ); 4082bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->sStereo.mid_only_flags[ psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded ] == 0 ) { 4092bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Reset side channel encoder memory for first frame with side coding */ 4102bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->prev_decode_only_middle == 1 ) { 4112bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( &psEnc->state_Fxx[ 1 ].sShape, 0, sizeof( psEnc->state_Fxx[ 1 ].sShape ) ); 4122bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( &psEnc->state_Fxx[ 1 ].sPrefilt, 0, sizeof( psEnc->state_Fxx[ 1 ].sPrefilt ) ); 4132bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( &psEnc->state_Fxx[ 1 ].sCmn.sNSQ, 0, sizeof( psEnc->state_Fxx[ 1 ].sCmn.sNSQ ) ); 4142bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( psEnc->state_Fxx[ 1 ].sCmn.prev_NLSFq_Q15, 0, sizeof( psEnc->state_Fxx[ 1 ].sCmn.prev_NLSFq_Q15 ) ); 4152bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memset( &psEnc->state_Fxx[ 1 ].sCmn.sLP.In_LP_State, 0, sizeof( psEnc->state_Fxx[ 1 ].sCmn.sLP.In_LP_State ) ); 4162bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 1 ].sCmn.prevLag = 100; 4172bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 1 ].sCmn.sNSQ.lagPrev = 100; 4182bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 1 ].sShape.LastGainIndex = 10; 4192bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 1 ].sCmn.prevSignalType = TYPE_NO_VOICE_ACTIVITY; 4202bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 1 ].sCmn.sNSQ.prev_gain_Q16 = 65536; 4212bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 1 ].sCmn.first_frame_after_reset = 1; 4222bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4232bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encode_do_VAD_Fxx( &psEnc->state_Fxx[ 1 ] ); 4242bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 4252bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ 1 ].sCmn.VAD_flags[ psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded ] = 0; 4262bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4272bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( !prefillFlag ) { 4282bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_stereo_encode_pred( psRangeEnc, psEnc->sStereo.predIx[ psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded ] ); 4292bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->state_Fxx[ 1 ].sCmn.VAD_flags[ psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded ] == 0 ) { 4302bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_stereo_encode_mid_only( psRangeEnc, psEnc->sStereo.mid_only_flags[ psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded ] ); 4312bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4322bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4332bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 4342bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Buffering */ 4352bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memcpy( psEnc->state_Fxx[ 0 ].sCmn.inputBuf, psEnc->sStereo.sMid, 2 * sizeof( opus_int16 ) ); 4362bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_memcpy( psEnc->sStereo.sMid, &psEnc->state_Fxx[ 0 ].sCmn.inputBuf[ psEnc->state_Fxx[ 0 ].sCmn.frame_length ], 2 * sizeof( opus_int16 ) ); 4372bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4382bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_encode_do_VAD_Fxx( &psEnc->state_Fxx[ 0 ] ); 4392bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 4402bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Encode */ 4412bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < encControl->nChannelsInternal; n++ ) { 4422bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int maxBits, useCBR; 4432bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 4442bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Handling rate constraints */ 4452bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian maxBits = encControl->maxBits; 4462bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( tot_blocks == 2 && curr_block == 0 ) { 4472bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian maxBits = maxBits * 3 / 5; 4482bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else if( tot_blocks == 3 ) { 4492bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( curr_block == 0 ) { 4502bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian maxBits = maxBits * 2 / 5; 4512bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else if( curr_block == 1 ) { 4522bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian maxBits = maxBits * 3 / 4; 4532bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4542bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4552bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian useCBR = encControl->useCBR && curr_block == tot_blocks - 1; 4562bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 4572bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( encControl->nChannelsInternal == 1 ) { 4582bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian channelRate_bps = TargetRate_bps; 4592bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 4602bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian channelRate_bps = MStargetRates_bps[ n ]; 4612bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( n == 0 && MStargetRates_bps[ 1 ] > 0 ) { 4622bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian useCBR = 0; 4632bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Give mid up to 1/2 of the max bits for that frame */ 4642bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian maxBits -= encControl->maxBits / ( tot_blocks * 2 ); 4652bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4662bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4672bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 4682bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( channelRate_bps > 0 ) { 4692bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian opus_int condCoding; 4702bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 4712bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_control_SNR( &psEnc->state_Fxx[ n ].sCmn, channelRate_bps ); 4722bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 4732bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Use independent coding if no previous frame available */ 4742bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded - n <= 0 ) { 4752bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian condCoding = CODE_INDEPENDENTLY; 4762bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else if( n > 0 && psEnc->prev_decode_only_middle ) { 4772bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* If we skipped a side frame in this packet, we don't 4782bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian need LTP scaling; the LTP state is well-defined. */ 4792bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian condCoding = CODE_INDEPENDENTLY_NO_LTP_SCALING; 4802bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 4812bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian condCoding = CODE_CONDITIONALLY; 4822bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4832bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( ( ret = silk_encode_frame_Fxx( &psEnc->state_Fxx[ n ], nBytesOut, psRangeEnc, condCoding, maxBits, useCBR ) ) != 0 ) { 4842bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian silk_assert( 0 ); 4852bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4862bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4872bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ n ].sCmn.controlled_since_last_payload = 0; 4882bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ n ].sCmn.inputBufIx = 0; 4892bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ n ].sCmn.nFramesEncoded++; 4902bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 4912bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->prev_decode_only_middle = psEnc->sStereo.mid_only_flags[ psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded - 1 ]; 4922bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 4932bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Insert VAD and FEC flags at beginning of bitstream */ 4942bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( *nBytesOut > 0 && psEnc->state_Fxx[ 0 ].sCmn.nFramesEncoded == psEnc->state_Fxx[ 0 ].sCmn.nFramesPerPacket) { 4952bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian flags = 0; 4962bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < encControl->nChannelsInternal; n++ ) { 4972bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( i = 0; i < psEnc->state_Fxx[ n ].sCmn.nFramesPerPacket; i++ ) { 4982bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian flags = silk_LSHIFT( flags, 1 ); 4992bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian flags |= psEnc->state_Fxx[ n ].sCmn.VAD_flags[ i ]; 5002bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 5012bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian flags = silk_LSHIFT( flags, 1 ); 5022bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian flags |= psEnc->state_Fxx[ n ].sCmn.LBRR_flag; 5032bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 5042bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( !prefillFlag ) { 5052bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian ec_enc_patch_initial_bits( psRangeEnc, flags, ( psEnc->state_Fxx[ 0 ].sCmn.nFramesPerPacket + 1 ) * encControl->nChannelsInternal ); 5062bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 5072bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 5082bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Return zero bytes if all channels DTXed */ 5092bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->state_Fxx[ 0 ].sCmn.inDTX && ( encControl->nChannelsInternal == 1 || psEnc->state_Fxx[ 1 ].sCmn.inDTX ) ) { 5102bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian *nBytesOut = 0; 5112bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 5122bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 5132bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->nBitsExceeded += *nBytesOut * 8; 5142bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->nBitsExceeded -= silk_DIV32_16( silk_MUL( encControl->bitRate, encControl->payloadSize_ms ), 1000 ); 5152bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->nBitsExceeded = silk_LIMIT( psEnc->nBitsExceeded, 0, 10000 ); 5162bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 5172bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian /* Update flag indicating if bandwidth switching is allowed */ 5182bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian speech_act_thr_for_switch_Q8 = silk_SMLAWB( SILK_FIX_CONST( SPEECH_ACTIVITY_DTX_THRES, 8 ), 5192bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian SILK_FIX_CONST( ( 1 - SPEECH_ACTIVITY_DTX_THRES ) / MAX_BANDWIDTH_SWITCH_DELAY_MS, 16 + 8 ), psEnc->timeSinceSwitchAllowed_ms ); 5202bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( psEnc->state_Fxx[ 0 ].sCmn.speech_activity_Q8 < speech_act_thr_for_switch_Q8 ) { 5212bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->allowBandwidthSwitch = 1; 5222bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->timeSinceSwitchAllowed_ms = 0; 5232bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 5242bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->allowBandwidthSwitch = 0; 5252bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->timeSinceSwitchAllowed_ms += encControl->payloadSize_ms; 5262bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 5272bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 5282bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 5292bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( nSamplesIn == 0 ) { 5302bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian break; 5312bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 5322bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } else { 5332bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian break; 5342bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 5352bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian curr_block++; 5362bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 5372bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 5382bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->nPrevChannelsInternal = encControl->nChannelsInternal; 5392bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 5402bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encControl->allowBandwidthSwitch = psEnc->allowBandwidthSwitch; 5412bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encControl->inWBmodeWithoutVariableLP = psEnc->state_Fxx[ 0 ].sCmn.fs_kHz == 16 && psEnc->state_Fxx[ 0 ].sCmn.sLP.mode == 0; 5422bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encControl->internalSampleRate = silk_SMULBB( psEnc->state_Fxx[ 0 ].sCmn.fs_kHz, 1000 ); 5432bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encControl->stereoWidth_Q14 = encControl->toMono ? 0 : psEnc->sStereo.smth_width_Q14; 5442bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian if( prefillFlag ) { 5452bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encControl->payloadSize_ms = tmp_payloadSize_ms; 5462bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian encControl->complexity = tmp_complexity; 5472bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian for( n = 0; n < encControl->nChannelsInternal; n++ ) { 5482bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ n ].sCmn.controlled_since_last_payload = 0; 5492bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian psEnc->state_Fxx[ n ].sCmn.prefillFlag = 0; 5502bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 5512bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian } 5522bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 5532bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian RESTORE_STACK; 5542bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian return ret; 5552bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian} 5562bd8b54017b5320bc0c1df9bf86f4cdc9f8db242Vignesh Venkatasubramanian 557