diff options
Diffstat (limited to 'libSBRdec/src/sbrdecoder.cpp')
| -rw-r--r-- | libSBRdec/src/sbrdecoder.cpp | 119 |
1 files changed, 53 insertions, 66 deletions
diff --git a/libSBRdec/src/sbrdecoder.cpp b/libSBRdec/src/sbrdecoder.cpp index 89a2338..b51461d 100644 --- a/libSBRdec/src/sbrdecoder.cpp +++ b/libSBRdec/src/sbrdecoder.cpp @@ -143,21 +143,19 @@ amm-info@iis.fraunhofer.de #include "env_extr.h" #include "sbr_dec.h" #include "env_dec.h" -#include "sbr_crc.h" +#include "FDK_crc.h" #include "sbr_ram.h" #include "sbr_rom.h" #include "lpp_tran.h" #include "transcendent.h" -#include "FDK_crc.h" - #include "sbrdec_drc.h" #include "psbitdec.h" /* Decoder library info */ #define SBRDECODER_LIB_VL0 3 -#define SBRDECODER_LIB_VL1 0 +#define SBRDECODER_LIB_VL1 1 #define SBRDECODER_LIB_VL2 0 #define SBRDECODER_LIB_TITLE "SBR Decoder" #ifdef SUPPRESS_BUILD_DATE_INFO @@ -1134,18 +1132,22 @@ SBR_ERROR sbrDecoder_Parse(HANDLE_SBRDECODER self, HANDLE_FDK_BITSTREAM hBs, SBR_HEADER_STATUS headerStatus = HEADER_NOT_PRESENT; INT startPos = FDKgetValidBits(hBs); - INT CRCLen = 0; + FDK_CRCINFO crcInfo; + INT crcReg = 0; + USHORT sbrCrc = 0; + UINT crcPoly; + UINT crcStartValue = 0; + UINT crcLen; + HANDLE_FDK_BITSTREAM hBsOriginal = hBs; FDK_BITSTREAM bsBwd; - FDK_CRCINFO crcInfo; - INT crcReg = 0; - USHORT drmSbrCrc = 0; const int fGlobalIndependencyFlag = acFlags & AC_INDEP; const int bs_pvc = acElFlags[elementIndex] & AC_EL_USAC_PVC; const int bs_interTes = acElFlags[elementIndex] & AC_EL_USAC_ITES; int stereo; int fDoDecodeSbrData = 1; + int alignBits = 0; int lastSlot, lastHdrSlot = 0, thisHdrSlot = 0; @@ -1277,27 +1279,23 @@ SBR_ERROR sbrDecoder_Parse(HANDLE_SBRDECODER self, HANDLE_FDK_BITSTREAM hBs, if (fDoDecodeSbrData) { if (crcFlag) { switch (self->coreCodec) { - case AOT_ER_AAC_ELD: - FDKpushFor(hBs, 10); - /* check sbrcrc later: we don't know the payload length now */ - break; case AOT_DRM_AAC: case AOT_DRM_SURROUND: - drmSbrCrc = (USHORT)FDKreadBits(hBs, 8); - /* Setup CRC decoder */ - FDKcrcInit(&crcInfo, 0x001d, 0xFFFF, 8); - /* Start CRC region */ - crcReg = FDKcrcStartReg(&crcInfo, hBs, 0); + crcPoly = 0x001d; + crcLen = 8; + crcStartValue = 0x000000ff; break; default: - CRCLen = bsPayLen - 10; /* change: 0 => i */ - if (CRCLen < 0) { - fDoDecodeSbrData = 0; - } else { - fDoDecodeSbrData = SbrCrcCheck(hBs, CRCLen); - } + crcPoly = 0x0633; + crcLen = 10; + crcStartValue = 0x00000000; break; } + sbrCrc = (USHORT)FDKreadBits(hBs, crcLen); + /* Setup CRC decoder */ + FDKcrcInit(&crcInfo, crcPoly, crcStartValue, crcLen); + /* Start CRC region */ + crcReg = FDKcrcStartReg(&crcInfo, hBs, 0); } } /* if (fDoDecodeSbrData) */ @@ -1450,35 +1448,6 @@ SBR_ERROR sbrDecoder_Parse(HANDLE_SBRDECODER self, HANDLE_FDK_BITSTREAM hBs, valBits = (INT)FDKgetValidBits(hBs); } - if (crcFlag) { - switch (self->coreCodec) { - case AOT_ER_AAC_ELD: { - /* late crc check for eld */ - INT payloadbits = - (INT)startPos - (INT)FDKgetValidBits(hBs) - startPos; - INT crcLen = payloadbits - 10; - FDKpushBack(hBs, payloadbits); - fDoDecodeSbrData = SbrCrcCheck(hBs, crcLen); - FDKpushFor(hBs, crcLen); - } break; - case AOT_DRM_AAC: - case AOT_DRM_SURROUND: - /* End CRC region */ - FDKcrcEndReg(&crcInfo, hBs, crcReg); - /* Check CRC */ - if ((FDKcrcGetCRC(&crcInfo) ^ 0xFF) != drmSbrCrc) { - fDoDecodeSbrData = 0; - if (headerStatus != HEADER_NOT_PRESENT) { - headerStatus = HEADER_ERROR; - hSbrHeader->syncState = SBR_NOT_INITIALIZED; - } - } - break; - default: - break; - } - } - /* sanity check of remaining bits */ if (valBits < 0) { fDoDecodeSbrData = 0; @@ -1489,7 +1458,7 @@ SBR_ERROR sbrDecoder_Parse(HANDLE_SBRDECODER self, HANDLE_FDK_BITSTREAM hBs, case AOT_AAC_LC: { /* This sanity check is only meaningful with General Audio * bitstreams */ - int alignBits = valBits & 0x7; + alignBits = valBits & 0x7; if (valBits > alignBits) { fDoDecodeSbrData = 0; @@ -1508,6 +1477,20 @@ SBR_ERROR sbrDecoder_Parse(HANDLE_SBRDECODER self, HANDLE_FDK_BITSTREAM hBs, errorStatus = SBRDEC_PARSE_ERROR; } + if (crcFlag && (hSbrHeader->syncState >= SBR_HEADER) && fDoDecodeSbrData) { + FDKpushFor(hBs, alignBits); + FDKcrcEndReg(&crcInfo, hBs, crcReg); /* End CRC region */ + FDKpushBack(hBs, alignBits); + /* Check CRC */ + if ((FDKcrcGetCRC(&crcInfo) ^ crcStartValue) != sbrCrc) { + fDoDecodeSbrData = 0; + if (headerStatus != HEADER_NOT_PRESENT) { + headerStatus = HEADER_ERROR; + hSbrHeader->syncState = SBR_NOT_INITIALIZED; + } + } + } + if (!fDoDecodeSbrData) { /* Set error flag for this slot to trigger concealment */ setFrameErrorFlag(self->pSbrElement[elementIndex], FRAME_ERROR); @@ -1587,10 +1570,10 @@ bail: * \return SBRDEC_OK if successfull, else error code */ static SBR_ERROR sbrDecoder_DecodeElement( - HANDLE_SBRDECODER self, QDOM_PCM *input, INT_PCM *timeData, - const int timeDataSize, const FDK_channelMapDescr *const mapDescr, - const int mapIdx, int channelIndex, const int elementIndex, - const int numInChannels, int *numOutChannels, const int psPossible) { + HANDLE_SBRDECODER self, LONG *input, LONG *timeData, const int timeDataSize, + const FDK_channelMapDescr *const mapDescr, const int mapIdx, + int channelIndex, const int elementIndex, const int numInChannels, + int *numOutChannels, const int psPossible) { SBR_DECODER_ELEMENT *hSbrElement = self->pSbrElement[elementIndex]; HANDLE_SBR_CHANNEL *pSbrChannel = self->pSbrElement[elementIndex]->pSbrChannel; @@ -1760,7 +1743,7 @@ static SBR_ERROR sbrDecoder_DecodeElement( timeData + offset1, strideOut, hSbrHeader, hFrameDataLeft, &pSbrChannel[0]->prevFrameData, (hSbrHeader->syncState == SBR_ACTIVE), h_ps_d, self->flags, - codecFrameSize); + codecFrameSize, self->sbrInDataHeadroom); if (stereo) { /* Process right channel */ @@ -1768,7 +1751,7 @@ static SBR_ERROR sbrDecoder_DecodeElement( timeData + offset1, NULL, NULL, strideOut, hSbrHeader, hFrameDataRight, &pSbrChannel[1]->prevFrameData, (hSbrHeader->syncState == SBR_ACTIVE), NULL, self->flags, - codecFrameSize); + codecFrameSize, self->sbrInDataHeadroom); } C_ALLOC_SCRATCH_END(pPsScratch, struct PS_DEC_COEFFICIENTS, 1) @@ -1788,14 +1771,14 @@ static SBR_ERROR sbrDecoder_DecodeElement( int copyFrameSize = codecFrameSize * self->pQmfDomain->QmfDomainOut->fb.no_channels; copyFrameSize /= self->pQmfDomain->QmfDomainIn->fb.no_channels; - INT_PCM *ptr; + LONG *ptr; INT i; FDK_ASSERT(strideOut == 2); ptr = timeData; for (i = copyFrameSize >> 1; i--;) { - INT_PCM tmp; /* This temporal variable is required because some - compilers can't do *ptr++ = *ptr++ correctly. */ + LONG tmp; /* This temporal variable is required because some compilers + can't do *ptr++ = *ptr++ correctly. */ tmp = *ptr++; *ptr++ = tmp; tmp = *ptr++; @@ -1808,12 +1791,13 @@ static SBR_ERROR sbrDecoder_DecodeElement( return errorStatus; } -SBR_ERROR sbrDecoder_Apply(HANDLE_SBRDECODER self, INT_PCM *input, - INT_PCM *timeData, const int timeDataSize, - int *numChannels, int *sampleRate, +SBR_ERROR sbrDecoder_Apply(HANDLE_SBRDECODER self, LONG *input, LONG *timeData, + const int timeDataSize, int *numChannels, + int *sampleRate, const FDK_channelMapDescr *const mapDescr, const int mapIdx, const int coreDecodedOk, - UCHAR *psDecoded) { + UCHAR *psDecoded, const INT inDataHeadroom, + INT *outDataHeadroom) { SBR_ERROR errorStatus = SBRDEC_OK; int psPossible; @@ -1850,6 +1834,9 @@ SBR_ERROR sbrDecoder_Apply(HANDLE_SBRDECODER self, INT_PCM *input, psPossible = 0; } + self->sbrInDataHeadroom = inDataHeadroom; + *outDataHeadroom = (INT)(8); + /* Make sure that even if no SBR data was found/parsed *psDecoded is returned * 1 if psPossible was 0. */ if (psPossible == 0) { |