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Diffstat (limited to 'lib/picocep.c')
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diff --git a/lib/picocep.c b/lib/picocep.c new file mode 100644 index 0000000..2510c13 --- /dev/null +++ b/lib/picocep.c @@ -0,0 +1,1965 @@ +/* + * Copyright (C) 2008-2009 SVOX AG, Baslerstr. 30, 8048 Zuerich, Switzerland + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/** + * @file picocep.c + * + * Phonetic to Acoustic Mapping PU - Implementation + * + * Copyright (C) 2008-2009 SVOX AG, Baslerstr. 30, 8048 Zuerich, Switzerland + * All rights reserved. + * + * History: + * - 2009-04-20 -- initial version + * + */ + +/** + * @addtogroup picocep + * <b> Pico Cepstral Smoothing </b>\n + * + itemtype, iteminfo1, iteminfo2, content -> TYPE(INFO1,INFO2)content + in the following + + items input + + processed: + + - PHONE(PHONID,StatesPerPhone)[FramesPerState|f0Index|mgcIndex]{StatesPerPhone} + + (StatesPerPhone is a constant (5) for the time being. The content size is therfore allways 34) + + unprocessed: + - all other item types are forwarded through the PU without modification + + items output + + FRAME(PHONID,F0 [?])ceps{25} + + each PHONE produces at least StatesPerPhone FRAME (if each state has FramesPerState == 1), but usually more. + + minimal input size (before processing starts) + + other limitations + + */ +#include "picodefs.h" +#include "picoos.h" +#include "picodbg.h" +#include "picodata.h" +#include "picokpdf.h" +#include "picodsp.h" +#include "picocep.h" + +#ifdef __cplusplus +extern "C" { +#endif +#if 0 +} +#endif + +#define PICOCEP_MAXWINLEN 10000 /* maximum number of frames that can be smoothed, i.e. maximum sentence length */ +#define PICOCEP_MSGSTR_SIZE 32 +#define PICOCEP_IN_BUFF_SIZE PICODATA_BUFSIZE_DEFAULT + +#define PICOCEP_OUT_DATA_FORMAT PICODATA_ITEMINFO1_FRAME_PAR_DATA_FORMAT_FIXED /* we output coefficients as fixed point values */ + +#define PICOCEP_STEPSTATE_COLLECT 0 +#define PICOCEP_STEPSTATE_PROCESS_PARSE 1 +#define PICOCEP_STEPSTATE_PROCESS_SMOOTH 2 +#define PICOCEP_STEPSTATE_PROCESS_FRAME 3 +#define PICOCEP_STEPSTATE_FEED 4 + +#define PICOCEP_LFZINVPOW 31 /* cannot be higher than 31 because 1<<invpow must fit in uint32 */ +#define PICOCEP_MGCINVPOW 24 +#define PICOCEP_LFZDOUBLEDEC 1 +#define PICOCEP_MGCDOUBLEDEC 0 + +typedef enum picocep_WantMeanOrIvar +{ + PICOCEP_WANTMEAN, PICOCEP_WANTIVAR +} picocep_WantMeanOrIvar_t; + +typedef enum picocep_WantStaticOrDeltax +{ + PICOCEP_WANTSTATIC, PICOCEP_WANTDELTA, PICOCEP_WANTDELTA2 +} picocep_WantStaticOrDelta_t; + +/* + * Fixedpoint arithmetic (might go into a separate module if general enough and needed by other modules) + */ + +#if defined(PICO_DEBUG) || defined(PICO_DEVEL_MODE) +int numlongmult = 0, numshortmult = 0; +#endif + +#define POW1 (0x1) +#define POW2 (0x2) +#define POW3 (0x4) +#define POW4 (0x8) +#define POW5 (0x10) +#define POW6 (0x20) +#define POW7 (0x40) +#define POW8 (0x80) +#define POW9 (0x100) +#define POW10 (0x200) +#define POW11 (0x400) +#define POW12 (0x800) +#define POW13 (0x1000) +#define POW14 (0x2000) +#define POW15 (0x4000) +#define POW16 (0x8000) +#define POW17 (0x10000) +#define POW18 (0x20000) +#define POW19 (0x40000) +#define POW20 (0x80000) +#define POW21 (0x100000) +#define POW22 (0x200000) +#define POW23 (0x400000) +#define POW24 (0x800000) +#define POW25 (0x1000000) +#define POW26 (0x2000000) +#define POW27 (0x4000000) +#define POW28 (0x8000000) +#define POW29 (0x10000000) +#define POW30 (0x20000000) +#define POW31 (0x40000000) + +/* item num restriction: maximum number of extended item heads in headx */ +#define PICOCEP_MAXNR_HEADX 60 +/* item num restriction: maximum size of all item contents together in cont */ +#define PICOCEP_MAXSIZE_CBUF 7680 /* (128 * PICOCEP_MAXNR_HEADX) */ + +typedef struct +{ + picodata_itemhead_t head; + picoos_uint16 cind; + picoos_uint16 frame; /* sync position */ +} picoacph_headx_t; + +/*---------------------------------------------------------- + // Name : cep_subobj + // Function: subobject definition for the cep processing + // Shortcut: cep + //---------------------------------------------------------*/ +typedef struct cep_subobj +{ + /*----------------------PU voice management------------------------------*/ + /* picorsrc_Voice voice; */ + /*----------------------PU state management------------------------------*/ + picoos_uint8 procState; /* where to take up work at next processing step */ + picoos_bool needMoreInput; /* more data necessary to start processing */ + /* picoos_uint8 force; *//* forced processing (needMoreData but buffers full */ + picoos_uint8 sentenceEnd; + picoos_uint8 feedFollowState; + picoos_bool inIgnoreState; + /*----------------------PU input management------------------------------*/ + picoos_uint8 inBuf[PICODATA_MAX_ITEMSIZE]; /* internal input buffer */ + picoos_uint16 inBufSize; /* actually allocated size */ + picoos_uint16 inReadPos, inWritePos; /* next pos to read/write from/to inBuf*/ + picoos_uint16 nextInPos; + + picoacph_headx_t headx[PICOCEP_MAXNR_HEADX]; + picoos_uint16 headxBottom; /* bottom */ + picoos_uint16 headxWritePos; /* next free position; headx is empty if headxBottom == headxWritePos */ + + picoos_uint8 cbuf[PICOCEP_MAXSIZE_CBUF]; + picoos_uint16 cbufBufSize; /* actually allocated size */ + picoos_uint16 cbufWritePos; /* length, 0 if empty */ + + /*----------------------PU output management-----------------------------*/ + picodata_itemhead_t framehead; + picoos_uint8 outBuf[PICODATA_MAX_ITEMSIZE]; /* internal output buffer (one item) */ + picoos_uint16 outBufSize; /* allocated outBuf size */ + picoos_uint16 outReadPos, outWritePos; /* next pos to read/write from/to outBuf*/ + + picoos_uint32 nNumFrames; + /*---------------------- other working variables ---------------------------*/ + + picoos_int32 diag0[PICOCEP_MAXWINLEN], diag1[PICOCEP_MAXWINLEN], + diag2[PICOCEP_MAXWINLEN], WUm[PICOCEP_MAXWINLEN], + invdiag0[PICOCEP_MAXWINLEN]; + + /*---------------------- constants --------------------------------------*/ + picoos_int32 xi[5], x1[2], x2[3], xm[3], xn[2]; + picoos_int32 xsqi[5], xsq1[2], xsq2[3], xsqm[3], xsqn[2]; + + picoos_uint32 scmeanpowLFZ, scmeanpowMGC; + picoos_uint32 scmeanLFZ, scmeanMGC; + + /*---------------------- indices --------------------------------------*/ + /* index buffer to hold indices as input for smoothing */ + picoos_uint16 indicesLFZ[PICOCEP_MAXWINLEN]; + picoos_uint16 indicesMGC[PICOCEP_MAXWINLEN]; + picoos_uint16 indexReadPos, indexWritePos; + picoos_uint16 activeEndPos; /* end position of indices to be considered */ + + /* this is used for input and output */ + picoos_uint8 phoneId[PICOCEP_MAXWINLEN]; /* synchronised with indexReadPos */ + + /*---------------------- coefficients --------------------------------------*/ + /* output coefficients buffer */ + picoos_int16 * outF0; + picoos_uint16 outF0ReadPos, outF0WritePos; + picoos_int16 * outXCep; + picoos_uint32 outXCepReadPos, outXCepWritePos; /* uint32 needed for MAXWINLEN*ceporder > 2^16 */ + picoos_uint8 * outVoiced; + picoos_uint16 outVoicedReadPos, outVoicedWritePos; + + /*---------------------- LINGWARE related data -------------------*/ + /* pdflfz knowledge base */ + picokpdf_PdfMUL pdflfz, pdfmgc; + +} cep_subobj_t; + +/** + * picocep_highestBit + * @brief find the highest non-zero bit in input x + * @remarks this may be implemented by comparing x to powers of 2 + * or instead of calling this function perform multiplication + * and consult overflow register if available on target + * @note implemented as a series of macros + */ + +#define picocep_highestBitNZ(x) (x>=POW17?(x>=POW25?(x>=POW29?(x>=POW31?31:(x>=POW30?30:29)):(x>=POW27?(x>=POW28?28:27):(x>=POW26?26:25))):(x>=POW21?(x>=POW23?(x>=POW24?24:23):(x>=POW22?22:21)):(x>=POW19?(x>=POW20?20:19):(x>=POW18?18:17)))):(x>=POW9?(x>=POW13?(x>=POW15?(x>=POW16?16:15):(x>=POW14?14:13)):(x>=POW11?(x>=POW12?12:11):(x>=POW10?10:9))):(x>=POW5?(x>=POW7?(x>=POW8?8:7):(x>=POW6?6:5)):(x>=POW3?(x>=POW4?4:3):(x>=POW2?2:1))))) +#define picocep_highestBitU(x) (x==0?0:picocep_highestBitNZ(x)) +#define picocep_highestBitS(x,zz) (x==0?0:(x<0?((zz)=(-x),picocep_highestBitNZ(zz)):picocep_highestBitNZ(x))) + +/* ------------------------------------------------------------------------------ + Internal function definitions + ---------------------------------------------------------------------------------*/ + +static void initSmoothing(cep_subobj_t * cep); + +static picoos_int32 getFromPdf(picokpdf_PdfMUL pdf, picoos_uint32 vecstart, + picoos_uint8 cepnum, picocep_WantMeanOrIvar_t wantMeanOrIvar, + picocep_WantStaticOrDelta_t wantStaticOrDeltax); + +static void invMatrix(cep_subobj_t * cep, picoos_uint16 N, + picoos_int16 *smoothcep, picoos_uint8 cepnum, + picokpdf_PdfMUL pdf, picoos_uint8 invpow, picoos_uint8 invDoubleDec); + +static picoos_uint8 makeWUWandWUm(cep_subobj_t * cep, picokpdf_PdfMUL pdf, + picoos_uint16 *indices, picoos_uint16 b, picoos_uint16 N, + picoos_uint8 cepnum); + +static void getDirect(picokpdf_PdfMUL pdf, picoos_uint16 *indices, + picoos_uint16 activeEndPos, + picoos_uint8 cepnum, picoos_int16 *smoothcep); + +static void getVoiced(picokpdf_PdfMUL pdf, picoos_uint16 *indices, + picoos_uint16 activeEndPos, + picoos_uint8 *smoothcep); + +static picoos_uint16 get_pi_uint16(picoos_uint8 * buf, picoos_uint16 *pos); + +static void treat_phone(cep_subobj_t * cep, picodata_itemhead_t * ihead); + +static picoos_uint8 forwardingItem(picodata_itemhead_t * ihead); + +static picodata_step_result_t cepStep(register picodata_ProcessingUnit this, + picoos_int16 mode, picoos_uint16 * numBytesOutput); + +/* -------------------------------------------- + * generic PU management + * -------------------------------------------- + */ + +/** + * initialization of a cep PU (processing unit) + * @param this : handle to a cep PU struct + * @return PICO_OK : init succeded + * @return PICO_ERR_OTHER : init failed + * @callgraph + * @callergraph + */ +static pico_status_t cepInitialize(register picodata_ProcessingUnit this) +{ + /*pico_status_t nRes;*/ + cep_subobj_t * cep; + if (NULL == this || NULL == this->subObj) { + return PICO_ERR_OTHER; + } + cep = (cep_subobj_t *) this->subObj; + /* inBuf */ + cep->inBufSize = PICODATA_BUFSIZE_CEP; + cep->inReadPos = 0; + cep->inWritePos = 0; + /* headx and cbuf */ + cep->headxBottom = cep->headxWritePos = 0; + cep->cbufBufSize = PICOCEP_MAXSIZE_CBUF; + cep->cbufWritePos = 0; + /* outBuf */ + cep->outBufSize = PICODATA_MAX_ITEMSIZE; + cep->outReadPos = 0; + cep->outWritePos = 0; + /* indices* */ + cep->indexReadPos = 0; + cep->indexWritePos = 0; + /* outCep, outF0, outVoiced */ + cep->outXCepReadPos = 0; + cep->outXCepWritePos = 0; + cep->outVoicedReadPos = 0; + cep->outVoicedWritePos = 0; + cep->outF0ReadPos = 0; + cep->outF0WritePos = 0; + + cep->needMoreInput = 0; + cep->inIgnoreState = 0; + cep->sentenceEnd = FALSE; + cep->procState = PICOCEP_STEPSTATE_COLLECT; + + cep->nNumFrames = 0; + + /*----------------------------------------------------------------- + * MANAGE Item I/O control management + ------------------------------------------------------------------*/ + cep->activeEndPos = PICOCEP_MAXWINLEN; + + /* kb pdflfz */ + cep->pdflfz = picokpdf_getPdfMUL( + this->voice->kbArray[PICOKNOW_KBID_PDF_LFZ]); + + /* kb pdfmgc */ + cep->pdfmgc = picokpdf_getPdfMUL( + this->voice->kbArray[PICOKNOW_KBID_PDF_MGC]); + + /* kb tab phones */ + /* cep->phones = + picoktab_getPhones(this->voice->kbArray[PICOKNOW_KBID_TAB_PHONES]); */ + + /*---------------------- other working variables ---------------------------*/ + /* define the (constant) FRAME_PAR item header */ + cep->framehead.type = PICODATA_ITEM_FRAME_PAR; + cep->framehead.info1 = PICOCEP_OUT_DATA_FORMAT; + cep->framehead.info2 = cep->pdfmgc->ceporder; + cep->framehead.len = sizeof(picoos_uint16) + (cep->framehead.info2 + 4) + * sizeof(picoos_uint16); + + /* constants used in makeWUWandWUm */ + initSmoothing(cep); + + cep->scmeanpowLFZ = cep->pdflfz->bigpow - cep->pdflfz->meanpow; + cep->scmeanpowMGC = cep->pdfmgc->bigpow - cep->pdfmgc->meanpow; + + cep->scmeanLFZ = (1 << (picoos_uint32) cep->scmeanpowLFZ); + + cep->scmeanMGC = (1 << (picoos_uint32) cep->scmeanpowMGC); + + return PICO_OK; +}/*cepInitialize*/ + +/** + * termination of a cep PU (processing unit) + * @param this : handle to a cep PU struct + * @return PICO_OK : termination succeded + * @return PICO_ERR_OTHER : termination failed + * @callgraph + * @callergraph + */ +static pico_status_t cepTerminate(register picodata_ProcessingUnit this) +{ + return PICO_OK; +} + +/** + * deallocation of a cep PU internal sub object + * @param this : handle to a cep PU struct + * @param mm : handle of the engine memory manager + * @return PICO_OK : deallocation succeded + * @return PICO_ERR_OTHER : deallocation failed + * @callgraph + * @callergraph + */ +static pico_status_t cepSubObjDeallocate(register picodata_ProcessingUnit this, + picoos_MemoryManager mm) +{ + + mm = mm; /* avoid warning "var not used in this function"*/ +#if defined(PICO_DEVEL_MODE) + printf("number of long mult is %d, number of short mult is %i\n",numlongmult,numshortmult); +#else + PICODBG_INFO_MSG(("number of long mult is %d, number of short mult is %i\n",numlongmult,numshortmult)); +#endif + if (NULL != this) { + cep_subobj_t * cep = (cep_subobj_t *) this->subObj; + picoos_deallocate(this->common->mm, (void *) &cep->outXCep); + picoos_deallocate(this->common->mm, (void *) &cep->outVoiced); + picoos_deallocate(this->common->mm, (void *) &cep->outF0); + picoos_deallocate(this->common->mm, (void *) &this->subObj); + } + return PICO_OK; +} + +/** + * creates a new cep PU (processing unit) + * @param mm : engine memory manager object pointer + * @param common : engine common object pointer + * @param cbIn : PU input buffer + * @param cbOut : PU output buffer + * @param voice : the voice descriptor object + * @return a valid PU handle if creation succeded + * @return NULL : creation failed + * @callgraph + * @callergraph + */ +picodata_ProcessingUnit picocep_newCepUnit(picoos_MemoryManager mm, + picoos_Common common, picodata_CharBuffer cbIn, + picodata_CharBuffer cbOut, picorsrc_Voice voice) +{ + picodata_ProcessingUnit this = picodata_newProcessingUnit(mm, common, cbIn, + cbOut, voice); + cep_subobj_t * cep; + + if (this == NULL) { + return NULL; + } + this->initialize = cepInitialize; + + PICODBG_DEBUG(("set this->step to cepStep")); + + this->step = cepStep; + this->terminate = cepTerminate; + this->subDeallocate = cepSubObjDeallocate; + this->subObj = picoos_allocate(mm, sizeof(cep_subobj_t)); + + cep = (cep_subobj_t *) this->subObj; + + if (this->subObj == NULL) { + picoos_deallocate(mm, (void*) &this); + return NULL; + }; + + /* allocate output coeeficient buffers */ + cep->outF0 = (picoos_int16 *) picoos_allocate(this->common->mm, + PICOCEP_MAXWINLEN * PICOKPDF_MAX_MUL_LFZ_CEPORDER + * sizeof(picoos_int16)); + cep->outXCep = (picoos_int16 *) picoos_allocate(this->common->mm, + PICOCEP_MAXWINLEN * PICOKPDF_MAX_MUL_MGC_CEPORDER + * sizeof(picoos_int16)); + cep->outVoiced = (picoos_uint8 *) picoos_allocate(this->common->mm, + PICOCEP_MAXWINLEN * sizeof(picoos_uint8)); + + if ((NULL == cep->outF0) || (NULL == cep->outXCep) || (NULL + == cep->outVoiced)) { + picoos_deallocate(this->common->mm, (void *) &(cep->outF0)); + picoos_deallocate(this->common->mm, (void *) &(cep->outXCep)); + picoos_deallocate(this->common->mm, (void *) &(cep->outVoiced)); + picoos_deallocate(mm, (void*) &cep); + picoos_deallocate(mm, (void*) &this); + return NULL; + } + cepInitialize(this); + + return this; +}/*picocep_newCepUnit*/ + +/* -------------------------------------------- + * processing and internal functions + * -------------------------------------------- + */ + +/** + * multiply by 1<<pow and check overflow + * @param a : input value + * @param pow : shift value + * @return multiplied value + * @callgraph + * @callergraph + */ +static picoos_int32 picocep_fixptmultpow(picoos_int32 a, picoos_uint8 pow) +{ + picoos_int32 b; + picoos_int32 zzz; + + if (picocep_highestBitS(a,zzz) + pow < 32) { + b = a << pow; + } else { + /* clip to maximum positive or negative value */ + b = 1 << 31; /* maximum negative value */ + if (a > 0) { + b -= 1; /* maximum positive value */ + }PICODBG_WARN(("picocep_fixptmultpow warning: overflow in fixed point multiplication %i*1<<%i. Clipping to %i\n", a, pow, b)); + } + return b; +} + +/** + * divide by 1<<pow with rounding + * @param a : input value + * @param pow : shift value + * @return divided value + * @callgraph + * @callergraph + */ +static picoos_int32 picocep_fixptdivpow(picoos_int32 a, picoos_uint8 pow) +{ + picoos_int32 big; + + if (a == 0) { + return a; + } + big = 1 << (pow - 1); + if (a > 0) { + a = (a + big) >> pow; + } else { + a = -1 * ((-1 * a + big) >> pow); + } + + return a; +} + +/** + * fixed point multiplication of x and y for large values of x or y or both + * @param x,y : operands 1 & 2, in fixed point S:M:N representation + * @param bigpow (int) : normalization factor=2**N, where N=number of binary decimal digits + * @param invDoubleDec : boolean indicating that x has double decimal size. + * do extra division by 1<<bigpow so that result has again single decimal size + * @return z(int) : result, in fixed point S:M:N representation + * @callgraph + * @callergraph + */ +static picoos_int32 picocep_fixptmultdouble(picoos_int32 x, picoos_int32 y, + picoos_uint8 bigpow, picoos_uint8 invDoubleDec) +{ + picoos_int32 a, b, c, d, e, z; + picoos_int32 big; + + big = 1 << bigpow; + + /* a = floor(x/big); */ + if (x >= 0) { + a = x >> bigpow; + b = x - (a << bigpow); + } else { + a = -1 * ((x * -1) >> bigpow); /* most significant 2 bytes of x */ + b = x - (a << bigpow); + } + + /* least significant 2 bytes of x i.e. x modulo big */ + /* c = floor(y/big); */ + if (y >= 0) { + c = y >> bigpow; + d = y - (c << bigpow); + } else { + c = -1 * ((y * -1) >> bigpow); + d = y - (c << bigpow); + } + + if (invDoubleDec == 1) { + e = a * d + b * c + picocep_fixptdivpow(b * d, bigpow); + z = a * c + picocep_fixptdivpow(e, bigpow); + } else { + z = ((a * c) << bigpow) + (a * d + b * c) + picocep_fixptdivpow(b * d, + bigpow); /* 4 mult and 3 add instead of 1 mult. */ + } + + return z; +} + +/** + * fixed point multiplication of x and y + * @param x,y : operands 1 & 2, in fixed point S:M:N representation + * @param bigpow (int) : normalization factor=2**N, where N=number of binary decimal digits + * @param invDoubleDec : boolean indicating that x has double decimal size. + * do extra division by 1<<bigpow so that result has again single decimal size + * @return z(int) : result, in fixed point S:M:N representation + * Notes + * - input and output values are 32 bit signed integers + * meant to represent a S.M.N encoding of a floating point value where + * - S : 1 sign bit + * - M : number of binary integer digits (M=32-1-N) + * - N : number of binary decimal digits (N=log2(big)) + * the routine supports 2 methods + * -# standard multiplication of x and y + * -# long multiplication of x and y + * under PICO_DEBUG the number of double and single precision multiplications is monitored for accuracy/performance tuning + * Calls + * - picocep_highestBit + * - picocep_fixptmultdouble + * @callgraph + * @callergraph + */ +static picoos_int32 picocep_fixptmult(picoos_int32 x, picoos_int32 y, + picoos_uint8 bigpow, picoos_uint8 invDoubleDec) +{ + picoos_int32 z; + picoos_uint8 multsz, pow; + picoos_int32 zz1, zz2; + + /* in C, the evaluation order of f() + g() is not defined, so + * if both have a side effect on e.g. zz, the outcome of zz is not defined. + * For that reason, picocep_highestBitS(x,zz) + picocep_highestBitS(y,zz) + * would generate a warning "operation on zz may be undefined" which we + * avoid by using two different variables zz1 and zz2 */ + multsz = picocep_highestBitS(x,zz1) + picocep_highestBitS(y,zz2); + pow = bigpow; + if (invDoubleDec == 1) { + pow += bigpow; + } + + if (multsz <= 30) { /* x*y < 1<<30 is safe including rounding in picocep_fixptdivpow, x*y < 1<<31 is safe but not with rounding */ + /* alternatively perform multiplication and consult overflow register */ + z = picocep_fixptdivpow(x * y, pow); +#if defined(PICO_DEBUG) + numshortmult++; /* keep track of number of short multiplications */ +#endif + } else { +#if defined(PICO_DEBUG) + if (multsz> 31 + pow) { + PICODBG_WARN(("picocep_fixptmult warning: overflow in fixed point multiplication %i*%i, multsz = %i, pow = %i, decrease bigpow\n", x, y, multsz, pow)); + } +#endif + z = picocep_fixptmultdouble(x, y, bigpow, invDoubleDec); /* perform long multiplication for large x and y */ +#if defined(PICO_DEBUG) + numlongmult++; /* keep track of number of long multiplications */ +#endif + } + return z; +}/* picocep_fixptmult */ + +/** + * fixed point ^division of a vs b + * @param a,b : operands 1 & 2, in fixed point S:M:N representation + * @param bigpow (int) : normalization factor=2**N, where N=number of binary decimal digits + * @return z(int) : result, in fixed point S:M:N representation + * Notes + * - input and output values are 32 bit signed integers + * meant to represent a S.M.N encoding of a floating point value where + * - S : 1 sign bit + * - M : number of binary integer digits (M=32-1-N) + * - N : number of binary decimal digits (N=log2(big)) + * - standard implementation of division by iteratively calculating + * the remainder and setting corresponding bit + * calculate integer part by integer division (DIV), + * then add X bits of precision in decimal part + * @callgraph + * @callergraph + */ +static picoos_int32 picocep_fixptdiv(picoos_int32 a, picoos_int32 b, + picoos_uint8 bigpow) +{ + picoos_int32 r, c, f, h, stop; + r = (a < 0) ? -a : a; /* take absolute value; b is already guaranteed to be positive in smoothing operation */ + if (r == 0) { + return 0; + } + c = 0; + stop = 0; + + /* can speed up slightly by setting stop = 2 => slightly less precision */ + h = r / b; /* in first loop h can be multiple bits, after first loop h can only be 0 or 1 */ + /* faster implementation on target by using comparison instead of DIV? */ + /* For our LDL even in first loop h <= 1, but not in backward step */ + c = c + (h << bigpow); /* after first loop simply set bit */ + r = r - h * b; /* corresponds to modulo operation */ + bigpow--; + r <<= 1; + + while ((bigpow > stop) && (r != 0)) { /* calculate bigpow bits after fixed point */ + /* can speed up slightly by setting stop = 2 => slightly less precision */ + if (r >= b) { + c += (1 << bigpow); /* after first loop simply set bit */ + r -= b; /* corresponds to modulo operation */ + } + bigpow--; + r <<= 1; + } + + if (r != 0) { + f = r + (b >> 1); + if (f >= b) { + if (f >= b + b) { + c += 2; + } else { + c++; + } + } + } + /* final step: do rounding (experimentally improves accuracy for our problem) */ + c = (a >= 0) ? c : -c; /* b is guaranteed to be positive because corresponds to diag0 */ + return c; +}/* picocep_fixptdiv */ + +/** + * perform inversion of diagonal element of WUW matrix + * @param d : diagonal element to be inverted + * @param rowscpow (int) : fixed point base for each dimension of the vectors stored in the database + * @param bigpow (int) : fixed point base used during cepstral smoothing + * @param invpow : fixed point base of inverted pivot elements + * @return inverted pivot element + * @note + * - d is guaranteed positive + * @callgraph + * @callergraph + */ +static picoos_int32 picocep_fixptInvDiagEle(picoos_uint32 d, + picoos_uint8* rowscpow, picoos_uint8 bigpow, picoos_uint8 invpow) +{ + picoos_uint32 r, b, c, h, f, stop; + picoos_uint8 dlen; + /* picoos_int32 zz; */ + c = 0; + stop = 0; + + dlen = picocep_highestBitU(d); + if (invpow + bigpow > 30 + dlen) { /* c must be < 2^32, hence d which is >= 2^(dlen-1) must be > 2^(invpow+bigpow-32), or invpow+bigpow must be <= dlen+30*/ + *rowscpow = invpow + bigpow - 30 - dlen;PICODBG_DEBUG(("input to picocep_fixptInvDiagEle is %i <= 1<<%i = 1<<invpow+bigpow-32. Choose lower invpow. For now scaling row by 1<<%i\n", d, invpow+bigpow-32, *rowscpow)); + } else { + *rowscpow = 0; + } + r = 1 << invpow; + b = d << (*rowscpow); + + /* first */ + h = r / b; + if (h > 0) { + c += (h << bigpow); + r -= h * b; + } + bigpow--; + r <<= 1; + + /* loop */ + while ((bigpow > stop) && (r != 0)) { + if (r >= b) { + c += (1 << bigpow); + r -= b; + } + bigpow--; + r <<= 1; + } + + if (r != 0) { + f = r + (b >> 1); + if (f >= b) { + if (f >= b + b) { + c += 2; + } else { + c++; + } + } + } + + return c; +}/* picocep_fixptInvDiagEle */ + +/** + * perform division of two operands a and b by multiplication by inverse of b + * @param a (int32) : operand 1 in fixed point S:M:N representation + * @param invb(uint32) : inverse of operand b, in fixed point P:Q representation (sign is positive) + * @param bigpow(uint8) : N = bigpow when invDoubleDec==0, else N = 2*bigpow + * @param invpow(uint8) : Q = invpow = number of binary decimal digits for invb + * @param invDoubleDec : boolean to indicate that a and the return value c have 2*N binary decimal digits instead of N + * @return c(int32) : result in fixed point S:v:w where w = 2*N when invDoubleDec == 1 + * @note Calls + * - picocep_fixptmult + * @callgraph + * @callergraph + */ +static picoos_int32 picocep_fixptinv(picoos_int32 a, picoos_uint32 invb, + picoos_uint8 bigpow, picoos_uint8 invpow, picoos_uint8 invDoubleDec) +{ + picoos_int32 c; + picoos_int8 normpow; + + c = picocep_fixptmult(a, invb, bigpow, invDoubleDec); + + /* if invDoubleDec==0, picocep_fixptmult assumes a and invb are in base 1<<bigpow and returns c = (a*b)/1<<bigpow + Since invb is in base 1<<invpow instead of 1<<bigpow, normalize c by 1<<(bigpow-invpow) + if invDoubleDec==1: + multiply additionally by 1<<bigpow*2 (for invb and c) so that base of c is again 2*bigpow + this can be seen by setting a=A*big, b=B*big, invb=big2/B, mult(a,invb) = a*invb/(big*big) = A/B*big*big2/(big*big) = A/B*big2/big + and we want c = A/B*big*big => normfactor = big^3/big2 + */ + if (invDoubleDec == 1) { + normpow = 3 * bigpow; + } else { + normpow = bigpow; + } + if (normpow < invpow) { + /* divide with rounding */ + c = picocep_fixptdivpow(c, invpow - normpow); + } else { + c = picocep_fixptmultpow(c, normpow - invpow); + } + return c; +} + +/** + * initializes the coefficients to calculate delta and delta-delta values and the squares of the coefficients + * @param cep : the CEP PU sub-object handle + * @callgraph + * @callergraph + */ +static void initSmoothing(cep_subobj_t * cep) +{ + cep->xi[0] = 1; + cep->xi[1] = -1; + cep->xi[2] = 2; + cep->xi[3] = -4; + cep->xi[4] = 2; + cep->xsqi[0] = 1; + cep->xsqi[1] = 1; + cep->xsqi[2] = 4; + cep->xsqi[3] = 16; + cep->xsqi[4] = 4; + + cep->x1[0] = -1; + cep->x1[1] = 2; + cep->xsq1[0] = 1; + cep->xsq1[1] = 4; + + cep->x2[0] = -1; + cep->x2[1] = -4; + cep->x2[2] = 2; + cep->xsq2[0] = 1; + cep->xsq2[1] = 16; + cep->xsq2[2] = 4; + + cep->xm[0] = 1; + cep->xm[1] = 2; + cep->xm[2] = -4; + cep->xsqm[0] = 1; + cep->xsqm[1] = 4; + cep->xsqm[2] = 16; + + cep->xn[0] = 1; + cep->xn[1] = 2; + cep->xsqn[0] = 1; + cep->xsqn[1] = 4; +} + +/** + * matrix inversion + * @param cep : PU sub object pointer + * @param N + * @param smoothcep : pointer to picoos_int16, sequence of smoothed cepstral vectors + * @param cepnum : cepstral dimension to be treated + * @param pdf : pdf resource + * @param invpow : fixed point base for inverse + * @param invDoubleDec : boolean indicating that result of picocep_fixptinv has fixed point base 2*bigpow + * picocep_fixptmult absorbs double decimal size by dividing its result by extra factor big + * @return void + * @remarks diag0, diag1, diag2, WUm, invdiag0 globals needed in this function (object members in pico) + * @callgraph + * @callergraph + */ +static void invMatrix(cep_subobj_t * cep, picoos_uint16 N, + picoos_int16 *smoothcep, picoos_uint8 cepnum, + picokpdf_PdfMUL pdf, picoos_uint8 invpow, picoos_uint8 invDoubleDec) +{ + picoos_int32 j, v1, v2, h; + picoos_uint32 k; + picoos_uint8 rowscpow, prevrowscpow; + picoos_uint8 ceporder = pdf->ceporder; + picoos_uint8 bigpow = pdf->bigpow; + picoos_uint8 meanpow = pdf->meanpow; + + /* LDL factorization */ + prevrowscpow = 0; + cep->invdiag0[0] = picocep_fixptInvDiagEle(cep->diag0[0], &rowscpow, + bigpow, invpow); /* inverse has fixed point basis 1<<invpow */ + cep->diag1[0] = picocep_fixptinv((cep->diag1[0]) << rowscpow, + cep->invdiag0[0], bigpow, invpow, invDoubleDec); /* perform division via inverse */ + cep->diag2[0] = picocep_fixptinv((cep->diag2[0]) << rowscpow, + cep->invdiag0[0], bigpow, invpow, invDoubleDec); + cep->WUm[0] = (cep->WUm[0]) << rowscpow; /* if diag0 too low, multiply LHS and RHS of row in matrix equation by 1<<rowscpow */ + for (j = 1; j < N; j++) { + /* do forward substitution */ + cep->WUm[j] = cep->WUm[j] - picocep_fixptmult(cep->diag1[j - 1], + cep->WUm[j - 1], bigpow, invDoubleDec); + if (j > 1) { + cep->WUm[j] = cep->WUm[j] - picocep_fixptmult(cep->diag2[j - 2], + cep->WUm[j - 2], bigpow, invDoubleDec); + } + + /* update row j */ + v1 = picocep_fixptmult((cep->diag1[j - 1]) / (1 << rowscpow), + cep->diag0[j - 1], bigpow, invDoubleDec); /* undo scaling by 1<<rowscpow because diag1(j-1) refers to symm ele in column j-1 not in row j-1 */ + cep->diag0[j] = cep->diag0[j] - picocep_fixptmult(cep->diag1[j - 1], + v1, bigpow, invDoubleDec); + if (j > 1) { + v2 = picocep_fixptmult((cep->diag2[j - 2]) / (1 << prevrowscpow), + cep->diag0[j - 2], bigpow, invDoubleDec); /* undo scaling by 1<<prevrowscpow because diag1(j-2) refers to symm ele in column j-2 not in row j-2 */ + cep->diag0[j] = cep->diag0[j] - picocep_fixptmult( + cep->diag2[j - 2], v2, bigpow, invDoubleDec); + } + prevrowscpow = rowscpow; + cep->invdiag0[j] = picocep_fixptInvDiagEle(cep->diag0[j], &rowscpow, + bigpow, invpow); /* inverse has fixed point basis 1<<invpow */ + cep->WUm[j] = (cep->WUm[j]) << rowscpow; + if (j < N - 1) { + h = picocep_fixptmult(cep->diag2[j - 1], v1, bigpow, invDoubleDec); + cep->diag1[j] = picocep_fixptinv((cep->diag1[j] - h) << rowscpow, + cep->invdiag0[j], bigpow, invpow, invDoubleDec); /* eliminate column j below pivot */ + } + if (j < N - 2) { + cep->diag2[j] = picocep_fixptinv((cep->diag2[j]) << rowscpow, + cep->invdiag0[j], bigpow, invpow, invDoubleDec); /* eliminate column j below pivot */ + } + } + + /* divide all entries of WUm by diag0 */ + for (j = 0; j < N; j++) { + cep->WUm[j] = picocep_fixptinv(cep->WUm[j], cep->invdiag0[j], bigpow, + invpow, invDoubleDec); + if (invDoubleDec == 1) { + cep->WUm[j] = picocep_fixptdivpow(cep->WUm[j], bigpow); + } + } + + /* backward substitution */ + for (j = N - 2; j >= 0; j--) { + cep->WUm[j] = cep->WUm[j] - picocep_fixptmult(cep->diag1[j], cep->WUm[j + + 1], bigpow, invDoubleDec); + if (j < N - 2) { + cep->WUm[j] = cep->WUm[j] - picocep_fixptmult(cep->diag2[j], + cep->WUm[j + 2], bigpow, invDoubleDec); + } + } + /* copy N frames into smoothcep (only for coeff # "cepnum") */ + /* coefficients normalized to occupy short; for correct waveform energy, divide by (1<<(bigpow-meanpow)) then convert e.g. to picoos_single */ + k = cepnum; + for (j = 0; j < N; j++) { + smoothcep[k] = (picoos_int16)(cep->WUm[j]/(1<<meanpow)); + k += ceporder; + } + +}/* invMatrix*/ + +/** + * Calculate matrix products needed to implement the solution + * @param cep : PU sub object pointer + * @param pdf : pointer to picoos_uint8, sequence of pdf vectors, each vector of length 1+ceporder*2+numdeltas*3+ceporder*3 + * @param indices : indices of pdf vectors for all frames in current sentence + * @param b, N : to be smoothed frames indices (range will be from b to b+N-1) + * @param cepnum : cepstral dimension to be treated + * @return void + * @remarks diag0, diag1, diag2, WUm, invdiag0 globals needed in this function (object members in pico) + * @remarks WUW --> At x W x A + * @remarks WUm --> At x W x b + * @callgraph + * @callergraph + */ +static picoos_uint8 makeWUWandWUm(cep_subobj_t * cep, picokpdf_PdfMUL pdf, + picoos_uint16 *indices, picoos_uint16 b, picoos_uint16 N, + picoos_uint8 cepnum) +{ + picoos_uint16 Id[2], Idd[3]; + /*picoos_uint32 vecstart, k;*/ + picoos_uint32 vecstart; + picoos_int32 *x = NULL, *xsq = NULL; + picoos_int32 mean, ivar; + picoos_uint16 i, j, numd = 0, numdd = 0; + picoos_uint8 vecsize = pdf->vecsize; + picoos_int32 prev_WUm, prev_diag0, prev_diag1, prev_diag1_1, prev_diag2; + + prev_WUm = prev_diag0 = prev_diag1 = prev_diag1_1 = prev_diag2 = 0; + for (i = 0; i < N; i++) { + + if ((1 < i) && (i < N - 2)) { + x = cep->xi; + xsq = cep->xsqi; + numd = 2; + numdd = 3; + Id[0] = Idd[0] = i - 1; + Id[1] = Idd[2] = i + 1; + Idd[1] = i; + } else if (i == 0) { + x = cep->x1; + xsq = cep->xsq1; + numd = numdd = 1; + Id[0] = Idd[0] = 1; + } else if (i == 1) { + x = cep->x2; + xsq = cep->xsq2; + numd = 1; + numdd = 2; + Id[0] = Idd[1] = 2; + Idd[0] = 1; + } else if (i == N - 2) { + x = cep->xm; + xsq = cep->xsqm; + numd = 1; + numdd = 2; + Id[0] = Idd[0] = N - 3; + Idd[1] = N - 2; + } else if (i == N - 1) { + x = cep->xn; + xsq = cep->xsqn; + numd = numdd = 1; + Id[0] = Idd[0] = N - 2; + } + + /* process static means and static inverse variances */ + if (i > 0 && indices[b + i] == indices[b + i - 1]) { + cep->diag0[i] = prev_diag0; + cep->WUm[i] = prev_WUm; + } else { + vecstart = indices[b + i] * vecsize; + ivar = getFromPdf(pdf, vecstart, cepnum, PICOCEP_WANTIVAR, + PICOCEP_WANTSTATIC); + prev_diag0 = cep->diag0[i] = ivar << 2; /* multiply ivar by 4 (4 used to be first entry of xsq) */ + mean = getFromPdf(pdf, vecstart, cepnum, PICOCEP_WANTMEAN, + PICOCEP_WANTSTATIC); + prev_WUm = cep->WUm[i] = mean << 1; /* multiply mean by 2 (2 used to be first entry of x) */ + } + + /* process delta means and delta inverse variances */ + for (j = 0; j < numd; j++) { + vecstart = indices[b + Id[j]] * vecsize; + ivar = getFromPdf(pdf, vecstart, cepnum, PICOCEP_WANTIVAR, + PICOCEP_WANTDELTA); + cep->diag0[i] += xsq[j] * ivar; + + mean = getFromPdf(pdf, vecstart, cepnum, PICOCEP_WANTMEAN, + PICOCEP_WANTDELTA); + if (mean != 0) { + cep->WUm[i] += x[j] * mean; + } + } + + /* process delta delta means and delta delta inverse variances */ + for (j = 0; j < numdd; j++) { + vecstart = indices[b + Idd[j]] * vecsize; + ivar = getFromPdf(pdf, vecstart, cepnum, PICOCEP_WANTIVAR, + PICOCEP_WANTDELTA2); + cep->diag0[i] += xsq[numd + j] * ivar; + + mean = getFromPdf(pdf, vecstart, cepnum, PICOCEP_WANTMEAN, + PICOCEP_WANTDELTA2); + if (mean != 0) { + cep->WUm[i] += x[numd + j] * mean; + } + } + + cep->diag0[i] = (cep->diag0[i] + 2) / 4; /* long DIV with rounding */ + cep->WUm[i] = (cep->WUm[i] + 1) / 2; /* long DIV with rounding */ + + /* calculate diag(A,-1) */ + if (i < N - 1) { + if (i < N - 2) { + if (i > 0 && indices[b + i + 1] == indices[b + i]) { + cep->diag1[i] = prev_diag1; + } else { + vecstart = indices[b + i + 1] * vecsize; + /* + diag1[i] = getFromPdf(pdf, vecstart, numvuv, ceporder, numdeltas, cepnum, + bigpow, meanpowUm, ivarpow, PICOCEP_WANTIVAR, PICOCEP_WANTDELTA2); + */ + prev_diag1 = cep->diag1[i] = getFromPdf(pdf, vecstart, + cepnum, PICOCEP_WANTIVAR, PICOCEP_WANTDELTA2); + } + /* + k = vecstart +pdf->numvuv+pdf->ceporder*2 + pdf->numdeltas*3 + + pdf->ceporder*2 +cepnum; + cep->diag1[i] = (picoos_int32)(pdf->content[k]) << pdf->bigpow; + */ + } else { + cep->diag1[i] = 0; + } + if (i > 0) { + if (i > 1 && indices[b + i] == indices[b + i - 1]) { + cep->diag1[i] += prev_diag1_1; + } else { + vecstart = indices[b + i] * vecsize; + /* + k = vecstart + pdf->numvuv + pdf->ceporder * 2 + pdf->numdeltas * 3 + pdf->ceporder * 2 + cepnum; + cep->diag1[i] += (picoos_int32)(pdf->content[k]) << pdf->bigpow; */ + /* cepnum'th delta delta ivar */ + + prev_diag1_1 = getFromPdf(pdf, vecstart, cepnum, + PICOCEP_WANTIVAR, PICOCEP_WANTDELTA2); + cep->diag1[i] += prev_diag1_1; + } + + } /*i < N-1 */ + cep->diag1[i] *= -2; + } + } + + /* calculate diag(A,-2) */ + for (i = 0; i < N - 2; i++) { + if (i > 0 && indices[b + i + 1] == indices[b + i]) { + cep->diag2[i] = prev_diag2; + } else { + vecstart = indices[b + i + 1] * vecsize; + /* + k = vecstart + pdf->numvuv + pdf->ceporder * 2 + pdf->numdeltas * 3 + pdf->ceporder * 2 + cepnum; + cep->diag2[i] = (picoos_int32)(pdf->content[k]) << pdf->bigpow; + k -= pdf->ceporder; + ivar = (picoos_int32)(pdf->content[k]) << pdf->bigpow; + */ + cep->diag2[i] = getFromPdf(pdf, vecstart, cepnum, PICOCEP_WANTIVAR, + PICOCEP_WANTDELTA2); + ivar = getFromPdf(pdf, vecstart, cepnum, PICOCEP_WANTIVAR, + PICOCEP_WANTDELTA); + cep->diag2[i] -= (ivar + 2) / 4; + prev_diag2 = cep->diag2[i]; + } + } + + return 0; +}/* makeWUWandWUm */ + +/** + * Retrieve actual values for MGC from PDF resource + * @param pdf : pointer to picoos_uint8, sequence of pdf vectors, each vector of length 1+ceporder*2+numdeltas*3+ceporder*3 + * @param vecstart : indices of pdf vectors for all frames in current sentence + * @param cepnum : cepstral dimension to be treated + * @param wantMeanOrIvar : flag to select mean or variance values + * @param wantStaticOrDeltax : flag to select static or delta values + * @return the actual value retrieved + * @callgraph + * @callergraph + */ +static picoos_int32 getFromPdf(picokpdf_PdfMUL pdf, picoos_uint32 vecstart, + picoos_uint8 cepnum, picocep_WantMeanOrIvar_t wantMeanOrIvar, + picocep_WantStaticOrDelta_t wantStaticOrDeltax) +{ + picoos_uint8 s, ind; + picoos_uint8 *p; + picoos_uint8 ceporder, ceporder2, cc; + picoos_uint32 k; + picoos_int32 mean = 0, ivar = 0; + + if (pdf->numdeltas == 0xFF) { + switch (wantMeanOrIvar) { + case PICOCEP_WANTMEAN: + switch (wantStaticOrDeltax) { + case PICOCEP_WANTSTATIC: + p = pdf->content + + (vecstart + pdf->numvuv + cepnum * 2); /* cepnum'th static mean */ + mean = ((picoos_int32) ((picoos_int16) (*(p + 1) << 8)) + | *p) << (pdf->meanpowUm[cepnum]); + break; + case PICOCEP_WANTDELTA: + cc = pdf->ceporder + cepnum; + p = pdf->content + (vecstart + pdf->numvuv + cc * 2); /* cepnum'th delta mean */ + mean = ((picoos_int32) ((picoos_int16) (*(p + 1) << 8)) + | *p) << (pdf->meanpowUm[cc]); + break; + case PICOCEP_WANTDELTA2: + cc = pdf->ceporder * 2 + cepnum; + p = pdf->content + (vecstart + pdf->numvuv + cc * 2); /* cepnum'th delta delta mean */ + mean = ((picoos_int32) ((picoos_int16) (*(p + 1) << 8)) + | *p) << (pdf->meanpowUm[cc]); + break; + default: + /* should never come here */ + PICODBG_ERROR(("unknown type wantStaticOrDeltax = %i", wantStaticOrDeltax)); + } + return mean; + break; + case PICOCEP_WANTIVAR: + switch (wantStaticOrDeltax) { + case PICOCEP_WANTSTATIC: + k = vecstart + pdf->numvuv + pdf->ceporder * 6 + cepnum; /* cepnum'th static ivar */ + ivar = (picoos_int32) (pdf->content[k]) + << (pdf->ivarpow[cepnum]); + break; + case PICOCEP_WANTDELTA: + ceporder = pdf->ceporder; + k = vecstart + pdf->numvuv + ceporder * 7 + cepnum; /* cepnum'th delta ivar */ + ivar = (picoos_int32) (pdf->content[k]) + << (pdf->ivarpow[ceporder + cepnum]); + break; + case PICOCEP_WANTDELTA2: + ceporder = pdf->ceporder; + k = vecstart + pdf->numvuv + ceporder * 8 + cepnum; /* cepnum'th delta delta ivar */ + ivar = (picoos_int32) (pdf->content[k]) + << (pdf->ivarpow[2 * ceporder + cepnum]); + break; + default: + /* should never get here */ + PICODBG_ERROR(("unknown type wantStaticOrDeltax = %i", wantStaticOrDeltax)); + } + return ivar; + break; + default: + /* should never come here */ + PICODBG_ERROR(("unknown type wantMeanOrIvar = %n", wantMeanOrIvar)); + return 0; + } + } else { + switch (wantMeanOrIvar) { + case PICOCEP_WANTMEAN: + switch (wantStaticOrDeltax) { + case PICOCEP_WANTSTATIC: + p = pdf->content + + (vecstart + pdf->numvuv + cepnum * 2); /* cepnum'th static mean */ + mean = ((picoos_int32) ((picoos_int16) (*(p + 1) << 8)) + | *p) << (pdf->meanpowUm[cepnum]); + return mean; + break; + case PICOCEP_WANTDELTA: + ceporder = pdf->ceporder; + s = 0; + ind = 0; + while ((s < pdf->numdeltas) && (ind < cepnum || (ind + == 0 && cepnum == 0))) { /* rawmean deltas are sparse so investigate indices in column */ + k = vecstart + pdf->numvuv + ceporder * 2 + s; /* s'th delta index */ + ind = (picoos_uint8) (pdf->content[k]); /* is already picoos_uint8 but just to make explicit */ + if (ind == cepnum) { + k = vecstart + pdf->numvuv + ceporder * 2 + + pdf->numdeltas + s * 2; /* s'th sparse delta mean, corresponds to cepnum'th delta mean */ + mean + = ((picoos_int32) ((picoos_int16) ((pdf->content[k + + 1]) << 8)) | pdf->content[k]) + << (pdf->meanpowUm[ceporder + + cepnum]); + return mean; + } + s++; + } + return 0; + break; + case PICOCEP_WANTDELTA2: + ceporder = pdf->ceporder; + ceporder2 = ceporder * 2; + s = pdf->numdeltas; + ind = 2 * ceporder; + while ((s-- > 0) && (ind > ceporder + cepnum)) { /* rawmean deltas are sparse so investigate indices in column */ + k = vecstart + pdf->numvuv + ceporder2 + s; /* s'th delta index */ + ind = (picoos_uint8) (pdf->content[k]); /* is already picoos_uint8 but just to make explicit */ + if (ind == ceporder + cepnum) { + k = vecstart + pdf->numvuv + ceporder2 + + pdf->numdeltas + s * 2; /* s'th sparse delta mean, corresponds to cepnum'th delta delta mean */ + mean + = ((picoos_int32) ((picoos_int16) ((pdf->content[k + + 1]) << 8)) | pdf->content[k]) + << (pdf->meanpowUm[ceporder2 + + cepnum]); + return mean; + } + } + return 0; + break; + default: + PICODBG_ERROR(("getFromPdf: unknown type wantStaticOrDeltax = %i\n", wantStaticOrDeltax)); + return 0; + } + break; + case PICOCEP_WANTIVAR: + switch (wantStaticOrDeltax) { + case PICOCEP_WANTSTATIC: + k = vecstart + pdf->numvuv + pdf->ceporder * 2 + + pdf->numdeltas * 3 + cepnum; /* cepnum'th static ivar */ + ivar = (picoos_int32) (pdf->content[k]) + << (pdf->ivarpow[cepnum]); + break; + case PICOCEP_WANTDELTA: + ceporder = pdf->ceporder; + k = vecstart + pdf->numvuv + ceporder * 3 + + pdf->numdeltas * 3 + cepnum; /* cepnum'th delta ivar */ + ivar = (picoos_int32) (pdf->content[k]) + << (pdf->ivarpow[ceporder + cepnum]); + break; + case PICOCEP_WANTDELTA2: + ceporder2 = 2 * pdf->ceporder; + k = vecstart + pdf->numvuv + ceporder2 + pdf->numdeltas + * 3 + ceporder2 + cepnum; /* cepnum'th delta delta ivar */ + ivar = (picoos_int32) (pdf->content[k]) + << (pdf->ivarpow[ceporder2 + cepnum]); + break; + default: + PICODBG_ERROR(("unknown type wantStaticOrDeltax = %i", wantStaticOrDeltax)); + } + return ivar; + break; + default: + PICODBG_ERROR(("unknown type wantMeanOrIvar = %i", wantMeanOrIvar)); + return 0; + } + } + return 0; +} + +/** + * Retrieve actual values for MGC from PDF resource - Variant "Direct" + * @param pdf : pointer to picoos_uint8, sequence of pdf vectors, each vector of length 1+ceporder*2+numdeltas*3+ceporder*3 + * @param indices : indices of pdf vectors for all frames in current sentence + * @param activeEndPos : ?? + * @param cepnum : cepstral dimension to be treated + * @param smoothcep : ?? + * @return the actual value retrieved + * @callgraph + * @callergraph + */ +static void getDirect(picokpdf_PdfMUL pdf, picoos_uint16 *indices, + picoos_uint16 activeEndPos, + picoos_uint8 cepnum, picoos_int16 *smoothcep) +{ + picoos_uint16 i; + picoos_uint32 j; + picoos_uint32 vecstart; + picoos_int32 mean, ivar; + picoos_int32 prev_mean; + picoos_uint8 vecsize = pdf->vecsize; + picoos_uint8 order = pdf->ceporder; + + j = cepnum; + prev_mean = 0; + for (i = 0; i < activeEndPos; i++) { + if (i > 0 && indices[i] == indices[i - 1]) { + mean = prev_mean; + } else { + vecstart = indices[i] * vecsize; + mean = getFromPdf(pdf, vecstart, cepnum, PICOCEP_WANTMEAN, + PICOCEP_WANTSTATIC); + ivar = getFromPdf(pdf, vecstart, cepnum, PICOCEP_WANTIVAR, + PICOCEP_WANTSTATIC); + prev_mean = mean = picocep_fixptdiv(mean, ivar, pdf->bigpow); + } + smoothcep[j] = (picoos_int16)(mean/(1<<pdf->meanpow)); + j += order; + } +} + +/** + * Retrieve actual values for voicing from PDF resource + * @param pdf : pointer to picoos_uint8, sequence of pdf vectors, each vector of length 1+ceporder*2+numdeltas*3+ceporder*3 + * @param indices : indices of pdf vectors for all frames in current sentence + * @param activeEndPos : end position of indices to be considered + * @return smoothcep : the values retrieved + * @callgraph + * @callergraph + */ +static void getVoiced(picokpdf_PdfMUL pdf, picoos_uint16 *indices, + picoos_uint16 activeEndPos, + picoos_uint8 *smoothcep) +{ + picoos_uint16 i, j; + picoos_uint32 vecstart; + picoos_uint8 vecsize = pdf->vecsize; + + if (pdf->numvuv == 0) { + /* do nothing */ + } else { + for (i = 0, j = 0; i < activeEndPos; i++, j++) { + vecstart = indices[i] * vecsize; + smoothcep[j] = pdf->content[vecstart]; /* odd value is voiced, even if unvoiced */ + } + } +} + +/** reads platform-independent uint16 from buffer at *pos and advances *pos + * @param buf : buffer picoos_uint8 + * @param *pos : start position inside buffer of pi uint16 + * @return the uint16 + * @callgraph + * @callergraph + */ +static picoos_uint16 get_pi_uint16(picoos_uint8 * buf, picoos_uint16 *pos) +{ + picoos_uint16 res; + res = buf[(*pos)] | ((picoos_uint16) buf[(*pos) + 1] << 8); + *pos += 2; + return res; +} +/** + * Looks up indices of one phone item and fills index buffers. Consumes Item + * @param cep : the CEP PU sub object pointer + * @param ihead : pointer to the start of the phone item + * @callgraph + * @callergraph + */ +static void treat_phone(cep_subobj_t * cep, picodata_itemhead_t * ihead) +{ + picoos_uint16 state, frame, frames; + picoos_uint16 indlfz, indmgc; + picoos_uint16 pos; + picoos_uint8 bufferFull; + + /* treat all states + * for each state, repeat putting the index into the index buffer framesperstate times. + */ + /* set state and frame to the first state and frame in the phone to be considered */ + state = 0; /* the first state to be considered */ + frame = 0; /* the first frame to be considered */ + /* numFramesPerState: 2 byte, lf0Index: 2 byte, mgcIndex: 2 byte -> 6 bytes per state */ + PICODBG_DEBUG(("skipping to phone state %i ",state)); + pos = cep->inReadPos + PICODATA_ITEM_HEADSIZE + state * 6; + /* */ + PICODBG_DEBUG(("state info starts at inBuf pos %i ",pos)); + /* get the current frames per state */ + frames = get_pi_uint16(cep->inBuf, &pos); + /* */ + PICODBG_DEBUG(("number of frames for this phone state: %i",frames)); + /* */ + PICODBG_DEBUG(("PARSE starting with frame %i",frame)); + + bufferFull = cep->indexWritePos >= PICOCEP_MAXWINLEN; + while ((state < ihead->info2) && (bufferFull == FALSE)) { + + /* get the current state's lf0 and mgc indices and adjust according to state */ + /* the indices have to be calculated as follows: + * new index = (index-1) + stateoffset(state) */ + + indlfz = get_pi_uint16(cep->inBuf, &pos); /* lfz index */ + indlfz += -1 + cep->pdflfz->stateoffset[state]; /* transform index */ + indmgc = get_pi_uint16(cep->inBuf, &pos); /* mgc index */ + indmgc += -1 + cep->pdfmgc->stateoffset[state]; /* transform index */ + + /* are we reaching the end of the index buffers? */ + if ((cep->indexWritePos - frame) + frames > PICOCEP_MAXWINLEN) { + /* number of frames that will still fit */ + frames = PICOCEP_MAXWINLEN - (cep->indexWritePos - frame); + bufferFull = TRUE; + PICODBG_DEBUG(("smoothing buffer full at state=%i frame=%i",state, frame)); + } + while (frame < frames) { + cep->indicesMGC[cep->indexWritePos] = indmgc; + cep->indicesLFZ[cep->indexWritePos] = indlfz; + cep->phoneId[cep->indexWritePos] = ihead->info1; + cep->indexWritePos++; + frame++; + } + /* proceed to next state */ + PICODBG_DEBUG(("finished state %i with %i frames, now at index write pos %i", + state, frames,cep->indexWritePos)); + state++; + if (state < ihead->info2) { + frame = 0; + frames = get_pi_uint16(cep->inBuf, &pos); + } + } + /* consume the phone item */ + cep->inReadPos = cep->nextInPos; + /* */ + PICODBG_DEBUG(("finished phone, advancing inReadPos to %i",cep->inReadPos)); +} + +/** + * Returns true if an Item has to be forwarded to next PU + * @param ihead : pointer to item head structure + * @return TRUE : the item should be forwarded + * @return FALSE : the item should be consumed + * @callgraph + * @callergraph + */ +static picoos_uint8 forwardingItem(picodata_itemhead_t * ihead) +{ + if ((PICODATA_ITEM_CMD == ihead->type) && (PICODATA_ITEMINFO1_CMD_IGNSIG + == ihead->info1)) { + return FALSE; + } else { + return TRUE; + } +} + +/** + * performs a step of the cep processing + * @param this : pointer to current PU (Control Unit) + * @param mode : mode for the PU (not used) + * @param numBytesOutput : pointer to output number fo bytes produced + * @return one of the "picodata_step_result_t" values + * @callgraph + * @callergraph + */ +static picodata_step_result_t cepStep(register picodata_ProcessingUnit this, + picoos_int16 mode, picoos_uint16 * numBytesOutput) +{ + register cep_subobj_t * cep; + picodata_itemhead_t ihead /* , ohead */; + picoos_uint8 * icontents; + pico_status_t sResult = PICO_OK; + picoos_uint16 blen, clen; + picoos_uint16 numinb, numoutb; + +#if defined (PICO_DEBUG) + picoos_char msgstr[PICOCEP_MSGSTR_SIZE]; +#endif + numinb = 0; + numoutb = 0; + + if (NULL == this || NULL == this->subObj) { + return PICODATA_PU_ERROR; + } + cep = (cep_subobj_t *) this->subObj; + mode = mode; /* avoid warning "var not used in this function"*/ + + /*Init number of output bytes*/ + *numBytesOutput = 0; + + while (1) { /* exit via return */ + + PICODBG_DEBUG(("doing pu state %i", cep->procState)); + + switch (cep->procState) { + + case PICOCEP_STEPSTATE_COLLECT: + /* *************** item collector ***********************************/ + + PICODBG_TRACE(("COLLECT")); + + /*collecting items from the PU input buffer*/ + sResult = picodata_cbGetItem(this->cbIn, + &(cep->inBuf[cep->inWritePos]), cep->inBufSize + - cep->inWritePos, &blen); + if (PICO_EOF == sResult) { /* there are no more items available and we always need more data here */ + PICODBG_DEBUG(("COLLECT need more data, returning IDLE")); + return PICODATA_PU_IDLE; + } + + PICODBG_DEBUG(("got item, status: %d", sResult)); + + if ((PICO_OK == sResult) && (blen > 0)) { + /* we now have one item */ + cep->inWritePos += blen; + cep->procState = PICOCEP_STEPSTATE_PROCESS_PARSE; + } else { + /* ignore item and stay in collect */ + PICODBG_ERROR(("COLLECT got bad result %i", sResult)); + cep->inReadPos = cep->inWritePos = 0; + } + /* return PICODATA_PU_ATOMIC; */ + break; + + case PICOCEP_STEPSTATE_PROCESS_PARSE: + /* **************** put item indices into index buffers (with repetition) ******************/ + + PICODBG_TRACE(("PARSE")); + + PICODBG_DEBUG(("getting info from inBuf in range: [%i,%i[", cep->inReadPos, cep->inWritePos)); + if (cep->inWritePos <= cep->inReadPos) { + /* no more items in inBuf */ + /* we try to get more data */ + PICODBG_DEBUG(("no more items in inBuf, try to collect more")); + /* cep->needMoreInput = TRUE; */ + cep->inReadPos = cep->inWritePos = 0; + cep->procState = PICOCEP_STEPSTATE_COLLECT; + break; + } + /* look at the current item */ + /*verify that current item is valid */ + if (!picodata_is_valid_item(cep->inBuf + cep->inReadPos, + cep->inWritePos - cep->inReadPos)) { + PICODBG_ERROR(("found invalid item")); + sResult = picodata_get_iteminfo( + cep->inBuf + cep->inReadPos, cep->inWritePos + - cep->inReadPos, &ihead, &icontents);PICODBG_DEBUG(("PARSE bad item %s",picodata_head_to_string(&ihead,msgstr,PICOCEP_MSGSTR_SIZE))); + + return PICODATA_PU_ERROR; + } + + sResult = picodata_get_iteminfo(cep->inBuf + cep->inReadPos, + cep->inWritePos - cep->inReadPos, &ihead, &icontents); + + if (PICO_EXC_BUF_UNDERFLOW == sResult) { + /* no more items in inBuf */ + /* we try to get more data */ + PICODBG_DEBUG(("no more items in inBuf, try to collect more")); + /* cep->needMoreInput = TRUE; */ + cep->inReadPos = cep->inWritePos = 0; + cep->procState = PICOCEP_STEPSTATE_COLLECT; + break; + } else if (PICO_OK != sResult) { + PICODBG_ERROR(("unknown exception (sResult == %i)",sResult)); + return (picodata_step_result_t) picoos_emRaiseException( + this->common->em, sResult, NULL, NULL); + break; + } + + PICODBG_DEBUG(("PARSE looking at item %s",picodata_head_to_string(&ihead,msgstr,PICOCEP_MSGSTR_SIZE))); + + cep->nextInPos = PICODATA_ITEM_HEADSIZE + ihead.len; + + /* we decide what to do next depending on the item and the state of the index buffer: + * - process buffer if buffer not empty and sentence end or flush or ignsig/start (don't consume item yet) + * - fill buffer with (part of) phone contents if item is a phone + * - consume or copy for later output otherwise + */ + + if (cep->inIgnoreState) { + if ((PICODATA_ITEM_CMD == ihead.type) + && (PICODATA_ITEMINFO1_CMD_IGNSIG == ihead.info1) + && (PICODATA_ITEMINFO2_CMD_END == ihead.info2)) { + cep->inIgnoreState = 0; + }PICODBG_DEBUG(("cep: PARSE consuming item of inBuf")); + cep->inReadPos = cep->nextInPos; + break; + } + + /* see if it is a sentence end boundary or termination boundary (flush) and there are indices to smooth -> smooth */ + if ((PICODATA_ITEM_BOUND == ihead.type) + && ((PICODATA_ITEMINFO1_BOUND_SEND == ihead.info1) + || (PICODATA_ITEMINFO1_BOUND_TERM == ihead.info1)) + && (cep->indexWritePos > 0)) { + /* we smooth the buffer */ + cep->activeEndPos = cep->indexWritePos; + cep->sentenceEnd = TRUE; + /* output whatever we got */ + PICODBG_DEBUG(("cep: PARSE found sentence terminator; setting activeEndPos to %i",cep->activeEndPos)); + cep->procState = PICOCEP_STEPSTATE_PROCESS_SMOOTH; + break; + } else if (PICODATA_ITEM_PHONE == ihead.type) { + /* it is a phone */ + PICODBG_DEBUG(("cep: PARSE treating PHONE")); + treat_phone(cep, &ihead); + + } else { + if ((PICODATA_ITEM_CMD == ihead.type) + && (PICODATA_ITEMINFO1_CMD_IGNSIG == ihead.info1) + && (PICODATA_ITEMINFO2_CMD_START == ihead.info2)) { + cep->inIgnoreState = 1; + } + /* sentence end or flush remaining after frame or other non-processable item, e.g. command */ + /* do we have to forward? */ + if (forwardingItem(&ihead)) { + /* if no active frames, output immediately */ + if (cep->indexWritePos <= 0) { + /* copy item to outBuf */ + PICODBG_DEBUG(("PARSE copy item in inBuf to outBuf")); + picodata_copy_item(cep->inBuf + cep->inReadPos, + cep->inWritePos - cep->inReadPos, + cep->outBuf, cep->outBufSize, &blen); + cep->outWritePos += blen; + PICODATA_INFO_ITEM(this->voice->kbArray[PICOKNOW_KBID_DBG], + (picoos_uint8 *)"cep: do forward item ", + cep->outBuf, PICODATA_MAX_ITEMSIZE); + /* output item and then go to parse to treat a new item. */ + cep->feedFollowState + = PICOCEP_STEPSTATE_PROCESS_PARSE; + cep->procState = PICOCEP_STEPSTATE_FEED; + } else if ((cep->headxWritePos < PICOCEP_MAXNR_HEADX) + && (cep->cbufWritePos + ihead.len + < cep->cbufBufSize)) { + /* there is enough space to store item */ + PICODBG_DEBUG(("unhandled item (type %c, length %i). Storing associated with index %i",ihead.type, ihead.len, cep->indexWritePos)); + sResult + = picodata_get_itemparts( + cep->inBuf + cep->inReadPos, + cep->inWritePos - cep->inReadPos, + &(cep->headx[cep->headxWritePos].head), + &(cep->cbuf[cep->cbufWritePos]), + cep->cbufBufSize + - cep->cbufWritePos, &clen); + + if (sResult != PICO_OK) { + PICODBG_ERROR(("problem getting item parts")); + picoos_emRaiseException(this->common->em, + sResult, NULL, NULL); + return PICODATA_PU_ERROR; + } + /* remember sync position */ + cep->headx[cep->headxWritePos].frame + = cep->indexWritePos; + + if (clen > 0) { + cep->headx[cep->headxWritePos].cind + = cep->cbufWritePos; + cep->cbufWritePos += clen; + } else { + cep->headx[cep->headxWritePos].cind = 0; + } + cep->headxWritePos++; + } else { + /* buffer full, smooth and output whatever we got */ + PICODBG_DEBUG(("PARSE is forced to smooth prematurely; setting activeEndPos to %i", cep->activeEndPos)); + cep->procState = PICOCEP_STEPSTATE_PROCESS_SMOOTH; + /* don't consume item yet */ + break; + } + } else { + }PICODBG_DEBUG(("cep: PARSE consuming item of inBuf")); + cep->inReadPos = cep->nextInPos; + } + break; + + case PICOCEP_STEPSTATE_PROCESS_SMOOTH: + /* **************** smooth (indexed) coefficients and store smoothed in outBuffers ****************/ + + PICODBG_TRACE(("SMOOTH")); + { + picokpdf_PdfMUL pdf; + + /* picoos_uint16 framesTreated = 0; */ + picoos_uint8 cepnum; + picoos_uint16 N; + + N = cep->activeEndPos; /* numframes in current step */ + + /* the range to be smoothed starts at 0 and is N long */ + + /* smooth each cepstral dimension separately */ + /* still to be experimented if higher order coeff can remain unsmoothed, i.e. simple copy from pdf */ + + /* reset the f0, ceps and voiced outfuffers */ + cep->outXCepReadPos = cep->outXCepWritePos = 0; + cep->outVoicedReadPos = cep->outVoicedWritePos = 0; + cep->outF0ReadPos = cep->outF0WritePos = 0; + + PICODBG_DEBUG(("smoothing %d frames\n", N)); + + /* smooth f0 */ + pdf = cep->pdflfz; + for (cepnum = 0; cepnum < pdf->ceporder; cepnum++) { + if (cep->activeEndPos <= 0) { + /* do nothing */ + } else if (3 < N) { + makeWUWandWUm(cep, pdf, cep->indicesLFZ, 0, N, + cepnum); /* update diag0, diag1, diag2, WUm */ + invMatrix(cep, N, cep->outF0 + cep->outF0WritePos, cepnum, pdf, + PICOCEP_LFZINVPOW, PICOCEP_LFZDOUBLEDEC); + } else { + getDirect(pdf, cep->indicesLFZ, cep->activeEndPos, + cepnum, cep->outF0 + cep->outF0WritePos); + } + }/* end for cepnum */ + cep->outF0WritePos += cep->activeEndPos * pdf->ceporder; + + /* smooth mgc */ + pdf = cep->pdfmgc; + for (cepnum = 0; cepnum < pdf->ceporder; cepnum++) { + if (cep->activeEndPos <= 0) { + /* do nothing */ + } else if (3 < N) { + makeWUWandWUm(cep, pdf, cep->indicesMGC, 0, N, + cepnum); /* update diag0, diag1, diag2, WUm */ + invMatrix(cep, N, cep->outXCep + + cep->outXCepWritePos, cepnum, + pdf, PICOCEP_MGCINVPOW, + PICOCEP_MGCDOUBLEDEC); + } else { + getDirect(pdf, cep->indicesMGC, cep->activeEndPos, + cepnum, cep->outXCep + cep->outXCepWritePos); + } + }/* end for cepnum */ + cep->outXCepWritePos += cep->activeEndPos * pdf->ceporder; + + getVoiced(pdf, cep->indicesMGC, cep->activeEndPos, cep->outVoiced + + cep->outVoicedWritePos); + cep->outVoicedWritePos += cep->activeEndPos; + + } + /* setting indexReadPos to the next active index to be used. (will be advanced by FRAME when + * reading the phoneId */ + cep->indexReadPos = 0; + cep->procState = PICOCEP_STEPSTATE_PROCESS_FRAME; + return PICODATA_PU_BUSY; /*data to feed*/ + + break; + + case PICOCEP_STEPSTATE_PROCESS_FRAME: + + /* *************** creating output items (type FRAME) ***********************************/ + + PICODBG_TRACE(("FRAME")); + + if ((cep->headxBottom < cep->headxWritePos) + && (cep->headx[cep->headxBottom].frame + <= cep->indexReadPos)) { + + /* output item in headx/cbuf */ + /* copy item to outBuf */ + PICODBG_DEBUG(("FRAME copy item in inBuf to outBuf")); + picodata_put_itemparts( + &(cep->headx[cep->headxBottom].head), + &(cep->cbuf[cep->headx[cep->headxBottom].cind]), + cep->headx[cep->headxBottom].head.len, cep->outBuf, + cep->outBufSize, &blen); + cep->outWritePos += blen; + /* consume item in headx/cbuf */ + PICODBG_DEBUG(("PARSE consuming item of headx/cbuf")); + cep->headxBottom++; + + /* output item and then go to parse to treat a new item. */ + cep->feedFollowState = PICOCEP_STEPSTATE_PROCESS_FRAME; + cep->procState = PICOCEP_STEPSTATE_FEED; + break; + } + + if (cep->indexReadPos < cep->activeEndPos) { + /*------------ there are frames to output ----------------------------------------*/ + /* still frames to output, create new FRAME_PAR item */ + + cep->nNumFrames++; + + PICODBG_DEBUG(("FRAME creating FRAME_PAR: active: [0,%i[, read=%i, write=%i", + cep->activeEndPos, cep->indexReadPos, cep->indexWritePos + )); + + /* create FRAME_PAR items from cep->outXX one by one */ + + /* converting the ceps shorts into floats: + * scmeanpow = pdf->bigpow - pdf->meanpow; + * for all sval: + * fval = (picoos_single) sval / scmeanpow; + */ + + cep->outWritePos = cep->outReadPos = 0; + cep->outBuf[cep->outWritePos++] = cep->framehead.type; + cep->outBuf[cep->outWritePos++] = cep->framehead.info1; + cep->outBuf[cep->outWritePos++] = cep->framehead.info2; + cep->outBuf[cep->outWritePos++] = cep->framehead.len; + + PICODBG_DEBUG(("FRAME writing position after header: %i",cep->outWritePos)); + + { + picoos_uint16 tmpUint16; + picoos_int16 tmpInt16; + picoos_uint16 i; + + /* */ + PICODBG_DEBUG(("FRAME reading phoneId[%i] = %c:",cep->indexReadPos, cep->phoneId[cep->indexReadPos])); + /* */ + + tmpUint16 + = (picoos_uint16) cep->phoneId[cep->indexReadPos]; + + picoos_mem_copy((void *) &tmpUint16, + (void *) &cep->outBuf[cep->outWritePos], + sizeof(tmpUint16)); + + cep->outWritePos += sizeof(tmpUint16); + + PICODBG_DEBUG(("FRAME writing position after phone id: %i",cep->outWritePos)); + + for (i = 0; i < cep->pdflfz->ceporder; i++) { + + tmpUint16 = (cep->outVoiced[cep->outVoicedReadPos] + & 0x01) ? cep->outF0[cep->outF0ReadPos] + : (picoos_uint16) 0; + + picoos_mem_copy((void *) &tmpUint16, + (void *) &cep->outBuf[cep->outWritePos], + sizeof(tmpUint16)); + cep->outWritePos += sizeof(tmpUint16); + + tmpUint16 + = (picoos_uint16) (cep->outVoiced[cep->outVoicedReadPos]); + picoos_mem_copy((void *) &tmpUint16, + (void *) &cep->outBuf[cep->outWritePos], + sizeof(tmpUint16)); + cep->outWritePos += sizeof(tmpUint16); + tmpUint16 + = (picoos_uint16) (cep->outF0[cep->outF0ReadPos]); + picoos_mem_copy((void *) &tmpUint16, + (void *) &cep->outBuf[cep->outWritePos], + sizeof(tmpUint16)); + cep->outWritePos += sizeof(tmpUint16); + + cep->outVoicedReadPos++; + cep->outF0ReadPos++; + } + + PICODBG_DEBUG(("FRAME writing position after f0: %i",cep->outWritePos)); + + for (i = 0; i < cep->pdfmgc->ceporder; i++) { + tmpInt16 = cep->outXCep[cep->outXCepReadPos++]; + picoos_mem_copy((void *) &tmpInt16, + (void *) &cep->outBuf[cep->outWritePos], + sizeof(tmpInt16)); + cep->outWritePos += sizeof(tmpInt16); + } + + PICODBG_DEBUG(("FRAME writing position after cepstrals: %i",cep->outWritePos)); + + tmpUint16 + = (picoos_uint16) cep->indicesMGC[cep->indexReadPos++]; + + picoos_mem_copy((void *) &tmpUint16, + (void *) &cep->outBuf[cep->outWritePos], + sizeof(tmpUint16)); + + PICODBG_DEBUG(("FRAME writing position after mgc index: %i",cep->outWritePos)); + + cep->outWritePos += sizeof(tmpUint16); + + } + /* finished to create FRAME_PAR, now output and then come back*/ + cep->feedFollowState = PICOCEP_STEPSTATE_PROCESS_FRAME; + cep->procState = PICOCEP_STEPSTATE_FEED; + + } else if (cep->sentenceEnd) { + /*------------ no more frames to output at end of sentence ----------------------------------------*/ + PICODBG_INFO(("End of sentence - Processed frames : %d", + cep->nNumFrames)); + cep->nNumFrames = 0;PICODBG_DEBUG(("FRAME no more active frames for this sentence")); + /* no frames left in this sentence*/ + /* reset for new sentence */ + initSmoothing(cep); + cep->sentenceEnd = FALSE; + cep->indexReadPos = cep->indexWritePos = 0; + cep->activeEndPos = PICOCEP_MAXWINLEN; + cep->headxBottom = cep->headxWritePos = 0; + cep->cbufWritePos = 0; + cep->procState = PICOCEP_STEPSTATE_PROCESS_PARSE; + } else { + /*------------ no more frames can be output but sentence end not reached ----------------------------------------*/ + PICODBG_DEBUG(("Maximum number of frames per sentence reached")); + cep->procState = PICOCEP_STEPSTATE_PROCESS_PARSE; + } + /*----------------------------------------------------*/ + break; + + case PICOCEP_STEPSTATE_FEED: + /* ***********************************************************************/ + /* FEED: combine input item with pos/phon pairs to output item */ + /* ***********************************************************************/ + + PICODBG_DEBUG(("FEED")); + + PICODBG_DEBUG(("FEED putting outBuf item into cb")); + + /*feeding items to PU output buffer*/ + sResult = picodata_cbPutItem(this->cbOut, cep->outBuf, + cep->outBufSize, &blen); + + if (PICO_EXC_BUF_OVERFLOW == sResult) { + /* we have to redo this item */ + PICODBG_DEBUG(("FEED got overflow, returning PICODATA_PU_OUT_FULL")); + return PICODATA_PU_OUT_FULL; + } else if (PICO_OK == sResult) { + + if (cep->outBuf[0] != 'k') { + PICODATA_INFO_ITEM(this->voice->kbArray[PICOKNOW_KBID_DBG], + (picoos_uint8 *)"cep: ", + cep->outBuf, PICODATA_MAX_ITEMSIZE); + } + + *numBytesOutput += blen; + /*-------------------------*/ + /*reset the output pointers*/ + /*-------------------------*/ + if (cep->outReadPos >= cep->outWritePos) { + cep->outReadPos = 0; + cep->outWritePos = 0; + } + cep->procState = cep->feedFollowState; + PICODBG_DEBUG(("FEED ok, going back to procState %i", cep->procState)); + return PICODATA_PU_BUSY; + } else { + PICODBG_DEBUG(("FEED got exception %i when trying to output item",sResult)); + cep->procState = cep->feedFollowState; + return (picodata_step_result_t) sResult; + } + break; + + default: + /*NOT feeding items*/ + sResult = PICO_EXC_BUF_IGNORE; + break; + }/*end switch (cep->procState) */ + return PICODATA_PU_BUSY; /*check if there is more data to process after feeding*/ + + }/*end while*/ + /* we should never come here */ + return PICODATA_PU_ERROR; +}/*cepStep*/ + +/* Picocep.c end */ |