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Diffstat (limited to 'libAACdec/src/aacdecoder.cpp')
| -rw-r--r-- | libAACdec/src/aacdecoder.cpp | 1787 |
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diff --git a/libAACdec/src/aacdecoder.cpp b/libAACdec/src/aacdecoder.cpp deleted file mode 100644 index 3a2a561..0000000 --- a/libAACdec/src/aacdecoder.cpp +++ /dev/null @@ -1,1787 +0,0 @@ - -/* ----------------------------------------------------------------------------------------------------------- -Software License for The Fraunhofer FDK AAC Codec Library for Android - -© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. - All rights reserved. - - 1. INTRODUCTION -The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements -the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. -This FDK AAC Codec software is intended to be used on a wide variety of Android devices. - -AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual -audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by -independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part -of the MPEG specifications. - -Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) -may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners -individually for the purpose of encoding or decoding bit streams in products that are compliant with -the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license -these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec -software may already be covered under those patent licenses when it is used for those licensed purposes only. - -Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, -are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional -applications information and documentation. - -2. COPYRIGHT LICENSE - -Redistribution and use in source and binary forms, with or without modification, are permitted without -payment of copyright license fees provided that you satisfy the following conditions: - -You must retain the complete text of this software license in redistributions of the FDK AAC Codec or -your modifications thereto in source code form. - -You must retain the complete text of this software license in the documentation and/or other materials -provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. -You must make available free of charge copies of the complete source code of the FDK AAC Codec and your -modifications thereto to recipients of copies in binary form. - -The name of Fraunhofer may not be used to endorse or promote products derived from this library without -prior written permission. - -You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec -software or your modifications thereto. - -Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software -and the date of any change. For modified versions of the FDK AAC Codec, the term -"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term -"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." - -3. NO PATENT LICENSE - -NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, -ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with -respect to this software. - -You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized -by appropriate patent licenses. - -4. DISCLAIMER - -This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors -"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties -of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR -CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, -including but not limited to procurement of substitute goods or services; loss of use, data, or profits, -or business interruption, however caused and on any theory of liability, whether in contract, strict -liability, or tort (including negligence), arising in any way out of the use of this software, even if -advised of the possibility of such damage. - -5. CONTACT INFORMATION - -Fraunhofer Institute for Integrated Circuits IIS -Attention: Audio and Multimedia Departments - FDK AAC LL -Am Wolfsmantel 33 -91058 Erlangen, Germany - -www.iis.fraunhofer.de/amm -amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------------------------------------ */ - -/***************************** MPEG-4 AAC Decoder ************************** - - Author(s): Josef Hoepfl - Description: - -******************************************************************************/ - - -/*! - \page default General Overview of the AAC Decoder Implementation - - The main entry point to decode a AAC frame is CAacDecoder_DecodeFrame(). It handles the different - transport multiplexes and bitstream formats supported by this implementation. It extracts the - AAC_raw_data_blocks from these bitstreams to further process then in the actual decoding stages. - - Note: Click on a function of file in the above image to see details about the function. Also note, that - this is just an overview of the most important functions and not a complete call graph. - - <h2>1 Bitstream deformatter</h2> - The basic bit stream parser function CChannelElement_Read() is called. It uses other subcalls in order - to parse and unpack the bitstreams. Note, that this includes huffmann decoding of the coded spectral data. - This operation can be computational significant specifically at higher bitrates. Optimization is likely in - CBlock_ReadSpectralData(). - - The bitstream deformatter also includes many bitfield operations. Profiling on the target will determine - required optimizations. - - <h2>2 Actual decoding to retain the time domain output</h2> - The basic bitstream deformatter function CChannelElement_Decode() for CPE elements and SCE elements are called. - Except for the stereo processing (2.1) which is only used for CPE elements, the function calls for CPE or SCE - are similar, except that CPE always processes to independent channels while SCE only processes one channel. - - Often there is the distinction between long blocks and short blocks. However, computational expensive functions - that ususally require optimization are being shared by these two groups, - - <h3>2.1 Stereo processing for CPE elements</h3> - CChannelPairElement_Decode() first calles the joint stereo tools in stereo.cpp when required. - - <h3>2.2 Scaling of spectral data</h3> - CBlock_ScaleSpectralData(). - - <h3>2.3 Apply additional coding tools</h3> - ApplyTools() calles the PNS tools in case of MPEG-4 bitstreams, and TNS filtering CTns_Apply() for MPEG-2 and MPEG-4 bitstreams. - The function TnsFilterIIR() which is called by CTns_Apply() (2.3.1) might require some optimization. - - <h2>3 Frequency-To-Time conversion</h3> - The filterbank is called using CBlock_FrequencyToTime() using the MDCT module from the FDK Tools - -*/ - - - -#include "aacdecoder.h" - -#include "aac_rom.h" -#include "aac_ram.h" -#include "channel.h" -#include "FDK_audio.h" - -#include "FDK_tools_rom.h" - - #include "aacdec_pns.h" - - #include "sbrdecoder.h" - - - - - #include "aacdec_hcr.h" - #include "rvlc.h" - - -#include "tpdec_lib.h" - -#include "conceal.h" - - - -#define CAN_DO_PS(aot) \ - ((aot) == AOT_AAC_LC \ -|| (aot) == AOT_SBR \ -|| (aot) == AOT_PS \ -|| (aot) == AOT_ER_BSAC \ -|| (aot) == AOT_DRM_AAC) - -#define IS_USAC(aot) \ - ((aot) == AOT_USAC \ -|| (aot) == AOT_RSVD50) - -#define IS_LOWDELAY(aot) \ - ((aot) == AOT_ER_AAC_LD \ -|| (aot) == AOT_ER_AAC_ELD) - -void CAacDecoder_SyncQmfMode(HANDLE_AACDECODER self) -{ - - /* Assign user requested mode */ - self->qmfModeCurr = self->qmfModeUser; - - if ( self->qmfModeCurr == NOT_DEFINED ) - { - if ( (IS_LOWDELAY(self->streamInfo.aot) && (self->flags & AC_MPS_PRESENT)) - || ( (self->streamInfo.aacNumChannels == 1) - && ( (CAN_DO_PS(self->streamInfo.aot) && !(self->flags & AC_MPS_PRESENT)) - || ( IS_USAC(self->streamInfo.aot) && (self->flags & AC_MPS_PRESENT)) ) ) ) - { - self->qmfModeCurr = MODE_HQ; - } else { - self->qmfModeCurr = MODE_LP; - } - } - - - /* Set SBR to current QMF mode. Error does not matter. */ - sbrDecoder_SetParam(self->hSbrDecoder, SBR_QMF_MODE, (self->qmfModeCurr == MODE_LP)); - self->psPossible = ((CAN_DO_PS(self->streamInfo.aot) && self->streamInfo.aacNumChannels == 1 && ! (self->flags & AC_MPS_PRESENT))) && self->qmfModeCurr == MODE_HQ ; - FDK_ASSERT( ! ( (self->flags & AC_MPS_PRESENT) && self->psPossible ) ); -} - -void CAacDecoder_SignalInterruption(HANDLE_AACDECODER self) -{ -} - -/*! - \brief Reset ancillary data struct. Call before parsing a new frame. - - \ancData Pointer to ancillary data structure - - \return Error code -*/ -static AAC_DECODER_ERROR CAacDecoder_AncDataReset(CAncData *ancData) -{ - int i; - for (i=0; i<8; i++) - { - ancData->offset[i] = 0; - } - ancData->nrElements = 0; - - return AAC_DEC_OK; -} - -/*! - \brief Initialize ancillary buffer - - \ancData Pointer to ancillary data structure - \buffer Pointer to (external) anc data buffer - \size Size of the buffer pointed on by buffer in bytes - - \return Error code -*/ -AAC_DECODER_ERROR CAacDecoder_AncDataInit(CAncData *ancData, unsigned char *buffer, int size) -{ - if (size >= 0) { - ancData->buffer = buffer; - ancData->bufferSize = size; - - CAacDecoder_AncDataReset(ancData); - - return AAC_DEC_OK; - } - - return AAC_DEC_ANC_DATA_ERROR; -} - -/*! - \brief Get one ancillary data element - - \ancData Pointer to ancillary data structure - \index Index of the anc data element to get - \ptr Pointer to a buffer receiving a pointer to the requested anc data element - \size Pointer to a buffer receiving the length of the requested anc data element in bytes - - \return Error code -*/ -AAC_DECODER_ERROR CAacDecoder_AncDataGet(CAncData *ancData, int index, unsigned char **ptr, int *size) -{ - AAC_DECODER_ERROR error = AAC_DEC_OK; - - *ptr = NULL; - *size = 0; - - if (index >= 0 && index < 8 && index < ancData->nrElements) - { - *ptr = &ancData->buffer[ancData->offset[index]]; - *size = ancData->offset[index+1] - ancData->offset[index]; - } - - return error; -} - - -/*! - \brief Parse ancillary data - - \ancData Pointer to ancillary data structure - \hBs Handle to FDK bitstream - \ancBytes Length of ancillary data to read from the bitstream - - \return Error code -*/ -static -AAC_DECODER_ERROR CAacDecoder_AncDataParse ( - CAncData *ancData, - HANDLE_FDK_BITSTREAM hBs, - const int ancBytes ) -{ - AAC_DECODER_ERROR error = AAC_DEC_OK; - int readBytes = 0; - - if (ancData->buffer != NULL) - { - if (ancBytes > 0) { - /* write ancillary data to external buffer */ - int offset = ancData->offset[ancData->nrElements]; - - if ((offset + ancBytes) > ancData->bufferSize) - { - error = AAC_DEC_TOO_SMALL_ANC_BUFFER; - } - else if (ancData->nrElements >= 8-1) - { - error = AAC_DEC_TOO_MANY_ANC_ELEMENTS; - } - else - { - int i; - - for (i = 0; i < ancBytes; i++) { - ancData->buffer[i+offset] = FDKreadBits(hBs, 8); - readBytes++; - } - - ancData->nrElements++; - ancData->offset[ancData->nrElements] = ancBytes + ancData->offset[ancData->nrElements-1]; - } - } - } - - readBytes = ancBytes - readBytes; - - if (readBytes > 0) { - /* skip data */ - FDKpushFor(hBs, readBytes<<3); - } - - return error; -} - -/*! - \brief Read Stream Data Element - - \bs Bitstream Handle - - \return Error code -*/ -static AAC_DECODER_ERROR CDataStreamElement_Read ( - HANDLE_FDK_BITSTREAM bs, - CAncData *ancData, - HANDLE_AAC_DRC hDrcInfo, - HANDLE_TRANSPORTDEC pTp, - UCHAR *elementInstanceTag, - UINT alignmentAnchor ) -{ - AAC_DECODER_ERROR error = AAC_DEC_OK; - UINT dataStart; - int dataByteAlignFlag, count; - - int crcReg = transportDec_CrcStartReg(pTp, 0); - - /* Element Instance Tag */ - *elementInstanceTag = FDKreadBits(bs,4); - /* Data Byte Align Flag */ - dataByteAlignFlag = FDKreadBits(bs,1); - - count = FDKreadBits(bs,8); - - if (count == 255) { - count += FDKreadBits(bs,8); /* EscCount */ - } - - if (dataByteAlignFlag) { - FDKbyteAlign(bs, alignmentAnchor); - } - - dataStart = FDKgetValidBits(bs); - - error = CAacDecoder_AncDataParse(ancData, bs, count); - transportDec_CrcEndReg(pTp, crcReg); - - { - INT readBits, dataBits = count<<3; - - /* Move to the beginning of the data junk */ - FDKpushBack(bs, dataStart-FDKgetValidBits(bs)); - - /* Read Anc data if available */ - readBits = aacDecoder_drcMarkPayload( hDrcInfo, bs, DVB_DRC_ANC_DATA ); - - if (readBits != dataBits) { - /* Move to the end again. */ - FDKpushBiDirectional(bs, FDKgetValidBits(bs)-dataStart+dataBits); - } - } - - return error; -} - -#ifdef TP_PCE_ENABLE -/*! - \brief Read Program Config Element - - \bs Bitstream Handle - \pTp Transport decoder handle for CRC handling - \pce Pointer to PCE buffer - \channelConfig Current channel configuration - \alignAnchor Anchor for byte alignment - - \return PCE status (-1: fail, 0: no new PCE, 1: PCE updated, 2: PCE updated need re-config). -*/ -static int CProgramConfigElement_Read ( - HANDLE_FDK_BITSTREAM bs, - HANDLE_TRANSPORTDEC pTp, - CProgramConfig *pce, - const UINT channelConfig, - const UINT alignAnchor ) -{ - int pceStatus = 0; - int crcReg; - - /* read PCE to temporal buffer first */ - C_ALLOC_SCRATCH_START(tmpPce, CProgramConfig, 1); - - CProgramConfig_Init(tmpPce); - CProgramConfig_Reset(tmpPce); - - crcReg = transportDec_CrcStartReg(pTp, 0); - - CProgramConfig_Read(tmpPce, bs, alignAnchor); - - transportDec_CrcEndReg(pTp, crcReg); - - if ( CProgramConfig_IsValid(tmpPce) - && (tmpPce->Profile == 1) ) - { - if ( !pce->isValid && (channelConfig > 0) ) { - /* Create a standard channel config PCE to compare with */ - CProgramConfig_GetDefault( pce, channelConfig ); - } - - if (pce->isValid) { - /* Compare the new and the old PCE (tags ignored) */ - switch ( CProgramConfig_Compare( pce, tmpPce ) ) - { - case 1: /* Channel configuration not changed. Just new metadata. */ - FDKmemcpy(pce, tmpPce, sizeof(CProgramConfig)); /* Store the complete PCE */ - pceStatus = 1; /* New PCE but no change of config */ - break; - case 2: /* The number of channels are identical but not the config */ - if (channelConfig == 0) { - FDKmemcpy(pce, tmpPce, sizeof(CProgramConfig)); /* Store the complete PCE */ - pceStatus = 2; /* Decoder needs re-configuration */ - } - break; - case -1: /* The channel configuration is completely different */ - pceStatus = -1; /* Not supported! */ - break; - case 0: /* Nothing to do because PCE matches the old one exactly. */ - default: - /* pceStatus = 0; */ - break; - } - } - } - - C_ALLOC_SCRATCH_END(tmpPce, CProgramConfig, 1); - - return pceStatus; -} -#endif /* TP_PCE_ENABLE */ - -/*! - \brief Parse Extension Payload - - \self Handle of AAC decoder - \count Pointer to bit counter. - \previous_element ID of previous element (required by some extension payloads) - - \return Error code -*/ -static -AAC_DECODER_ERROR CAacDecoder_ExtPayloadParse (HANDLE_AACDECODER self, - HANDLE_FDK_BITSTREAM hBs, - int *count, - MP4_ELEMENT_ID previous_element, - int elIndex, - int fIsFillElement) -{ - AAC_DECODER_ERROR error = AAC_DEC_OK; - EXT_PAYLOAD_TYPE extension_type; - int bytes = (*count) >> 3; - int crcFlag = 0; - - if (*count < 4) { - return AAC_DEC_PARSE_ERROR; - } else if ((INT)FDKgetValidBits(hBs) < *count) { - return AAC_DEC_DECODE_FRAME_ERROR; - } - - extension_type = (EXT_PAYLOAD_TYPE) FDKreadBits(hBs, 4); /* bs_extension_type */ - *count -= 4; - - switch (extension_type) - { - case EXT_DYNAMIC_RANGE: - { - INT readBits = aacDecoder_drcMarkPayload( self->hDrcInfo, hBs, MPEG_DRC_EXT_DATA ); - - if (readBits > *count) - { /* Read too much. Something went wrong! */ - error = AAC_DEC_PARSE_ERROR; - } - *count -= readBits; - } - break; - - - case EXT_SBR_DATA_CRC: - crcFlag = 1; - case EXT_SBR_DATA: - if (IS_CHANNEL_ELEMENT(previous_element)) { - SBR_ERROR sbrError; - - CAacDecoder_SyncQmfMode(self); - - sbrError = sbrDecoder_InitElement( - self->hSbrDecoder, - self->streamInfo.aacSampleRate, - self->streamInfo.extSamplingRate, - self->streamInfo.aacSamplesPerFrame, - self->streamInfo.aot, - previous_element, - elIndex - ); - - if (sbrError == SBRDEC_OK) { - sbrError = sbrDecoder_Parse ( - self->hSbrDecoder, - hBs, - count, - *count, - crcFlag, - previous_element, - elIndex, - self->flags & AC_INDEP ); - /* Enable SBR for implicit SBR signalling. */ - if (sbrError == SBRDEC_OK) { - self->sbrEnabled = 1; - } - } else { - /* Do not try to apply SBR because initializing the element failed. */ - self->sbrEnabled = 0; - } - /* Citation from ISO/IEC 14496-3 chapter 4.5.2.1.5.2 - Fill elements containing an extension_payload() with an extension_type of EXT_SBR_DATA - or EXT_SBR_DATA_CRC shall not contain any other extension_payload of any other extension_type. - */ - if (fIsFillElement) { - FDKpushBiDirectional(hBs, *count); - *count = 0; - } else { - /* If this is not a fill element with a known length, we are screwed an no further parsing makes sense. */ - if (sbrError != SBRDEC_OK) { - self->frameOK = 0; - } - } - } else { - error = AAC_DEC_PARSE_ERROR; - } - break; - - case EXT_FILL_DATA: - { - int temp; - - temp = FDKreadBits(hBs,4); - bytes--; - if (temp != 0) { - error = AAC_DEC_PARSE_ERROR; - break; - } - while (bytes > 0) { - temp = FDKreadBits(hBs,8); - bytes--; - if (temp != 0xa5) { - error = AAC_DEC_PARSE_ERROR; - break; - } - } - *count = bytes<<3; - } - break; - - case EXT_DATA_ELEMENT: - { - int dataElementVersion; - - dataElementVersion = FDKreadBits(hBs,4); - *count -= 4; - if (dataElementVersion == 0) /* ANC_DATA */ - { - int temp, dataElementLength = 0; - do { - temp = FDKreadBits(hBs,8); - *count -= 8; - dataElementLength += temp; - } while (temp == 255 ); - - CAacDecoder_AncDataParse(&self->ancData, hBs, dataElementLength); - *count -= (dataElementLength<<3); - } else { - /* align = 0 */ - error = AAC_DEC_PARSE_ERROR; - goto bail; - } - } - break; - - case EXT_DATA_LENGTH: - if ( !fIsFillElement /* Makes no sens to have an additional length in a fill ... */ - && (self->flags & AC_ER) ) /* ... element because this extension payload type was ... */ - { /* ... created to circumvent the missing length in ER-Syntax. */ - int bitCnt, len = FDKreadBits(hBs, 4); - *count -= 4; - - if (len == 15) { - int add_len = FDKreadBits(hBs, 8); - *count -= 8; - len += add_len; - - if (add_len == 255) { - len += FDKreadBits(hBs, 16); - *count -= 16; - } - } - len <<= 3; - bitCnt = len; - - if ( (EXT_PAYLOAD_TYPE)FDKreadBits(hBs, 4) == EXT_DATA_LENGTH ) { - /* Check NOTE 2: The extension_payload() included here must - not have extension_type == EXT_DATA_LENGTH. */ - error = AAC_DEC_PARSE_ERROR; - } else { - /* rewind and call myself again. */ - FDKpushBack(hBs, 4); - - error = - CAacDecoder_ExtPayloadParse ( - self, - hBs, - &bitCnt, - previous_element, - elIndex, - 0 ); - - *count -= len - bitCnt; - } - /* Note: the fall through in case the if statement above is not taken is intentional. */ - break; - } - - case EXT_FIL: - - default: - /* align = 4 */ - FDKpushFor(hBs, *count); - *count = 0; - break; - } - -bail: - if ( (error != AAC_DEC_OK) - && fIsFillElement ) - { /* Skip the remaining extension bytes */ - FDKpushBiDirectional(hBs, *count); - *count = 0; - /* Patch error code because decoding can go on. */ - error = AAC_DEC_OK; - /* Be sure that parsing errors have been stored. */ - } - return error; -} - -/* Stream Configuration and Information. - - This class holds configuration and information data for a stream to be decoded. It - provides the calling application as well as the decoder with substantial information, - e.g. profile, sampling rate, number of channels found in the bitstream etc. -*/ -static -void CStreamInfoInit(CStreamInfo *pStreamInfo) -{ - pStreamInfo->aacSampleRate = 0; - pStreamInfo->profile = -1; - pStreamInfo->aot = AOT_NONE; - - pStreamInfo->channelConfig = -1; - pStreamInfo->bitRate = 0; - pStreamInfo->aacSamplesPerFrame = 0; - - pStreamInfo->extAot = AOT_NONE; - pStreamInfo->extSamplingRate = 0; - - pStreamInfo->flags = 0; - - pStreamInfo->epConfig = -1; /* default is no ER */ - - pStreamInfo->numChannels = 0; - pStreamInfo->sampleRate = 0; - pStreamInfo->frameSize = 0; -} - -/*! - \brief Initialization of AacDecoderChannelInfo - - The function initializes the pointers to AacDecoderChannelInfo for each channel, - set the start values for window shape and window sequence of overlap&add to zero, - set the overlap buffer to zero and initializes the pointers to the window coefficients. - \param bsFormat is the format of the AAC bitstream - - \return AACDECODER instance -*/ -LINKSPEC_CPP HANDLE_AACDECODER CAacDecoder_Open(TRANSPORT_TYPE bsFormat) /*!< bitstream format (adif,adts,loas,...). */ -{ - HANDLE_AACDECODER self; - - self = GetAacDecoder(); - if (self == NULL) { - goto bail; - } - - /* Assign channel mapping info arrays (doing so removes dependency of settings header in API header). */ - self->streamInfo.pChannelIndices = self->channelIndices; - self->streamInfo.pChannelType = self->channelType; - - /* set default output mode */ - self->outputInterleaved = 1; /* interleaved */ - - /* initialize anc data */ - CAacDecoder_AncDataInit(&self->ancData, NULL, 0); - - /* initialize stream info */ - CStreamInfoInit(&self->streamInfo); - - /* initialize error concealment common data */ - CConcealment_InitCommonData(&self->concealCommonData); - - self->hDrcInfo = GetDrcInfo(); - if (self->hDrcInfo == NULL) { - goto bail; - } - /* Init common DRC structure */ - aacDecoder_drcInit( self->hDrcInfo ); - /* Set default frame delay */ - aacDecoder_drcSetParam ( - self->hDrcInfo, - DRC_BS_DELAY, - CConcealment_GetDelay(&self->concealCommonData) - ); - - - self->aacCommonData.workBufferCore1 = GetWorkBufferCore1(); - self->aacCommonData.workBufferCore2 = GetWorkBufferCore2(); - if (self->aacCommonData.workBufferCore1 == NULL - ||self->aacCommonData.workBufferCore2 == NULL ) - goto bail; - - return self; - -bail: - CAacDecoder_Close( self ); - - return NULL; -} - -/* Destroy aac decoder */ -LINKSPEC_CPP void CAacDecoder_Close(HANDLE_AACDECODER self) -{ - int ch; - - if (self == NULL) - return; - - for (ch=0; ch<(6); ch++) { - if (self->pAacDecoderStaticChannelInfo[ch] != NULL) { - if (self->pAacDecoderStaticChannelInfo[ch]->pOverlapBuffer != NULL) { - FreeOverlapBuffer (&self->pAacDecoderStaticChannelInfo[ch]->pOverlapBuffer); - } - if (self->pAacDecoderStaticChannelInfo[ch] != NULL) { - FreeAacDecoderStaticChannelInfo (&self->pAacDecoderStaticChannelInfo[ch]); - } - } - if (self->pAacDecoderChannelInfo[ch] != NULL) { - FreeAacDecoderChannelInfo (&self->pAacDecoderChannelInfo[ch]); - } - } - - self->aacChannels = 0; - - if (self->hDrcInfo) { - FreeDrcInfo(&self->hDrcInfo); - } - - if (self->aacCommonData.workBufferCore1 != NULL) { - FreeWorkBufferCore1 (&self->aacCommonData.workBufferCore1); - } - if (self->aacCommonData.workBufferCore2 != NULL) { - FreeWorkBufferCore2 (&self->aacCommonData.workBufferCore2); - } - - FreeAacDecoder ( &self); -} - - -/*! - \brief Initialization of decoder instance - - The function initializes the decoder. - - \return error status: 0 for success, <>0 for unsupported configurations -*/ -LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_Init(HANDLE_AACDECODER self, const CSAudioSpecificConfig *asc) -{ - AAC_DECODER_ERROR err = AAC_DEC_OK; - INT ascChannels, ch, ascChanged = 0; - - if (!self) - return AAC_DEC_INVALID_HANDLE; - - // set profile and check for supported aot - // leave profile on default (=-1) for all other supported MPEG-4 aot's except aot=2 (=AAC-LC) - switch (asc->m_aot) { - case AOT_AAC_LC: - self->streamInfo.profile = 1; - break; - - case AOT_SBR: - case AOT_PS: - case AOT_ER_AAC_LD: - case AOT_ER_AAC_ELD: - break; - - default: - return AAC_DEC_UNSUPPORTED_AOT; - } - - CProgramConfig_Init(&self->pce); - - /* set channels */ - switch (asc->m_channelConfiguration) { - case 0: -#ifdef TP_PCE_ENABLE - /* get channels from program config (ASC) */ - if (CProgramConfig_IsValid(&asc->m_progrConfigElement)) { - ascChannels = asc->m_progrConfigElement.NumChannels; - if (ascChannels > 0) { - int el; - /* valid number of channels -> copy program config element (PCE) from ASC */ - FDKmemcpy(&self->pce, &asc->m_progrConfigElement, sizeof(CProgramConfig)); - /* Built element table */ - el = CProgramConfig_GetElementTable(&asc->m_progrConfigElement, self->elements, 7); - for (; el<7; el++) { - self->elements[el] = ID_NONE; - } - } else { - return AAC_DEC_UNSUPPORTED_CHANNELCONFIG; - } - } else { - if (transportDec_GetFormat(self->hInput) == TT_MP4_ADTS) { - /* set default max_channels for memory allocation because in implicit channel mapping mode - we don't know the actual number of channels until we processed at least one raw_data_block(). */ - ascChannels = (6); - } else { - return AAC_DEC_UNSUPPORTED_CHANNELCONFIG; - } - } -#else /* TP_PCE_ENABLE */ - return AAC_DEC_UNSUPPORTED_CHANNELCONFIG; -#endif /* TP_PCE_ENABLE */ - break; - case 1: case 2: case 3: case 4: case 5: case 6: - ascChannels = asc->m_channelConfiguration; - break; - case 7: - ascChannels = 8; - break; - default: - return AAC_DEC_UNSUPPORTED_CHANNELCONFIG; - } - - /* Initialize constant mappings for channel config 1-7 */ - if (asc->m_channelConfiguration > 0) { - int el; - FDKmemcpy(self->elements, elementsTab[asc->m_channelConfiguration-1], sizeof(MP4_ELEMENT_ID)*FDKmin(7,7)); - for (el=7; el<7; el++) { - self->elements[el] = ID_NONE; - } - for (ch=0; ch<ascChannels; ch++) { - self->chMapping[ch] = ch; - } - for (; ch<(6); ch++) { - self->chMapping[ch] = 255; - } - } - #ifdef TP_PCE_ENABLE - else { - if (CProgramConfig_IsValid(&asc->m_progrConfigElement)) { - /* Set matrix mixdown infos if available from PCE. */ - pcmDmx_SetMatrixMixdownFromPce ( self->hPcmUtils, - asc->m_progrConfigElement.MatrixMixdownIndexPresent, - asc->m_progrConfigElement.MatrixMixdownIndex, - asc->m_progrConfigElement.PseudoSurroundEnable ); - } - } - #endif - - self->streamInfo.channelConfig = asc->m_channelConfiguration; - - if (ascChannels > (6)) { - return AAC_DEC_UNSUPPORTED_CHANNELCONFIG; - } - if (self->streamInfo.aot != asc->m_aot) { - self->streamInfo.aot = asc->m_aot; - ascChanged = 1; - } - - if (self->streamInfo.aacSamplesPerFrame != (INT)asc->m_samplesPerFrame) { - self->streamInfo.aacSamplesPerFrame = asc->m_samplesPerFrame; - ascChanged = 1; - } - - self->streamInfo.bitRate = 0; - - /* Set syntax flags */ - self->flags = 0; - - self->streamInfo.extAot = asc->m_extensionAudioObjectType; - self->streamInfo.extSamplingRate = asc->m_extensionSamplingFrequency; - self->flags |= (asc->m_sbrPresentFlag) ? AC_SBR_PRESENT : 0; - self->flags |= (asc->m_psPresentFlag) ? AC_PS_PRESENT : 0; - self->sbrEnabled = 0; - - /* --------- vcb11 ------------ */ - self->flags |= (asc->m_vcb11Flag) ? AC_ER_VCB11 : 0; - - /* ---------- rvlc ------------ */ - self->flags |= (asc->m_rvlcFlag) ? AC_ER_RVLC : 0; - - /* ----------- hcr ------------ */ - self->flags |= (asc->m_hcrFlag) ? AC_ER_HCR : 0; - - if (asc->m_aot == AOT_ER_AAC_ELD) { - self->flags |= AC_ELD; - self->flags |= (asc->m_sc.m_eldSpecificConfig.m_sbrCrcFlag) ? AC_SBRCRC : 0; - self->flags |= (asc->m_sc.m_eldSpecificConfig.m_useLdQmfTimeAlign) ? AC_LD_MPS : 0; - } - self->flags |= (asc->m_aot == AOT_ER_AAC_LD) ? AC_LD : 0; - self->flags |= (asc->m_epConfig >= 0) ? AC_ER : 0; - - - if (asc->m_sbrPresentFlag) { - self->sbrEnabled = 1; - self->sbrEnabledPrev = 1; - } - if (asc->m_psPresentFlag) { - self->flags |= AC_PS_PRESENT; - } - - if ( (asc->m_epConfig >= 0) - && (asc->m_channelConfiguration <= 0) ) { - /* we have to know the number of channels otherwise no decoding is possible */ - return AAC_DEC_UNSUPPORTED_ER_FORMAT; - } - - self->streamInfo.epConfig = asc->m_epConfig; - /* self->hInput->asc.m_epConfig = asc->m_epConfig; */ - - if (asc->m_epConfig > 1) - return AAC_DEC_UNSUPPORTED_ER_FORMAT; - - /* Check if samplerate changed. */ - if (self->streamInfo.aacSampleRate != (INT)asc->m_samplingFrequency) { - AAC_DECODER_ERROR error; - - ascChanged = 1; - - /* Update samplerate info. */ - error = getSamplingRateInfo(&self->samplingRateInfo, asc->m_samplesPerFrame, asc->m_samplingFrequencyIndex, asc->m_samplingFrequency); - if (error != AAC_DEC_OK) { - return error; - } - self->streamInfo.aacSampleRate = self->samplingRateInfo.samplingRate; - } - - /* Check if amount of channels has changed. */ - if (self->ascChannels != ascChannels) - { - ascChanged = 1; - - /* Allocate all memory structures for each channel */ - { - for (ch = 0; ch < ascChannels; ch++) { - CAacDecoderDynamicData *aacDecoderDynamicData = &self->aacCommonData.workBufferCore1->pAacDecoderDynamicData[ch%2]; - - /* initialize pointer to CAacDecoderChannelInfo */ - if (self->pAacDecoderChannelInfo[ch] == NULL) { - self->pAacDecoderChannelInfo[ch] = GetAacDecoderChannelInfo(ch); - /* This is temporary until the DynamicData is split into two or more regions! - The memory could be reused after completed core decoding. */ - if (self->pAacDecoderChannelInfo[ch] == NULL) { - goto bail; - } - /* Hook shared work memory into channel data structure */ - self->pAacDecoderChannelInfo[ch]->pDynData = aacDecoderDynamicData; - self->pAacDecoderChannelInfo[ch]->pComData = &self->aacCommonData; - } - - /* Allocate persistent channel memory */ - if (self->pAacDecoderStaticChannelInfo[ch] == NULL) { - self->pAacDecoderStaticChannelInfo[ch] = GetAacDecoderStaticChannelInfo(ch); - if (self->pAacDecoderStaticChannelInfo[ch] == NULL) { - goto bail; - } - self->pAacDecoderStaticChannelInfo[ch]->pOverlapBuffer = GetOverlapBuffer(ch); /* This area size depends on the AOT */ - if (self->pAacDecoderStaticChannelInfo[ch]->pOverlapBuffer == NULL) { - goto bail; - } - self->pAacDecoderChannelInfo[ch]->pSpectralCoefficient = (SPECTRAL_PTR) &self->aacCommonData.workBufferCore2[ch*1024]; - - } - CPns_InitPns(&self->pAacDecoderChannelInfo[ch]->data.aac.PnsData, &self->aacCommonData.pnsInterChannelData, &self->aacCommonData.pnsCurrentSeed, self->aacCommonData.pnsRandomSeed); - } - - if (ascChannels > self->aacChannels) - { - /* Make allocated channel count persistent in decoder context. */ - self->aacChannels = ascChannels; - } - - HcrInitRom(&self->aacCommonData.overlay.aac.erHcrInfo); - setHcrType(&self->aacCommonData.overlay.aac.erHcrInfo, ID_SCE); - } - - /* Make amount of signalled channels persistent in decoder context. */ - self->ascChannels = ascChannels; - } - - /* Update structures */ - if (ascChanged) { - - /* Things to be done for each channel, which do not involve allocating memory. - Doing these things only on the channels needed for the current configuration - (ascChannels) could lead to memory access violation later (error concealment). */ - for (ch = 0; ch < self->aacChannels; ch++) { - switch (self->streamInfo.aot) { - case AOT_ER_AAC_ELD: - case AOT_ER_AAC_LD: - self->pAacDecoderChannelInfo[ch]->granuleLength = self->streamInfo.aacSamplesPerFrame; - break; - default: - self->pAacDecoderChannelInfo[ch]->granuleLength = self->streamInfo.aacSamplesPerFrame / 8; - break; - } - mdct_init( &self->pAacDecoderStaticChannelInfo[ch]->IMdct, - self->pAacDecoderStaticChannelInfo[ch]->pOverlapBuffer, - OverlapBufferSize ); - - - /* Reset DRC control data for this channel */ - aacDecoder_drcInitChannelData ( &self->pAacDecoderStaticChannelInfo[ch]->drcData ); - - /* Reset concealment only if ASC changed. Otherwise it will be done with any config callback. - E.g. every time the LATM SMC is present. */ - CConcealment_InitChannelData(&self->pAacDecoderStaticChannelInfo[ch]->concealmentInfo, - &self->concealCommonData, - self->streamInfo.aacSamplesPerFrame ); - } - } - - /* Update externally visible copy of flags */ - self->streamInfo.flags = self->flags; - - return err; - -bail: - aacDecoder_Close( self ); - return AAC_DEC_OUT_OF_MEMORY; -} - - -LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_DecodeFrame( - HANDLE_AACDECODER self, - const UINT flags, - INT_PCM *pTimeData, - const INT timeDataSize, - const INT interleaved - ) -{ - AAC_DECODER_ERROR ErrorStatus = AAC_DEC_OK; - - CProgramConfig *pce; - HANDLE_FDK_BITSTREAM bs = transportDec_GetBitstream(self->hInput, 0); - - MP4_ELEMENT_ID type = ID_NONE; /* Current element type */ - INT aacChannels=0; /* Channel counter for channels found in the bitstream */ - - INT auStartAnchor = (INT)FDKgetValidBits(bs); /* AU start bit buffer position for AU byte alignment */ - - self->frameOK = 1; - - /* Any supported base layer valid AU will require more than 16 bits. */ - if ( (transportDec_GetAuBitsRemaining(self->hInput, 0) < 15) && (flags & (AACDEC_CONCEAL|AACDEC_FLUSH)) == 0) { - self->frameOK = 0; - ErrorStatus = AAC_DEC_DECODE_FRAME_ERROR; - } - - - /* Reset Program Config structure */ - pce = &self->pce; - CProgramConfig_Reset(pce); - - CAacDecoder_AncDataReset(&self->ancData); - - { - int ch; - - if (self->streamInfo.channelConfig == 0) { - /* Init Channel/Element mapping table */ - for (ch=0; ch<(6); ch++) { - self->chMapping[ch] = 255; - } - if (!CProgramConfig_IsValid(pce)) { - int el; - for (el=0; el<7; el++) { - self->elements[el] = ID_NONE; - } - } - } - } - - /* Check sampling frequency */ - switch ( self->streamInfo.aacSampleRate ) { - case 16000: - case 12000: - case 11025: - case 8000: - case 7350: - case 48000: - case 44100: - case 32000: - case 24000: - case 22050: - break; - default: - if ( ! (self->flags & (AC_USAC|AC_RSVD50)) ) { - return AAC_DEC_UNSUPPORTED_SAMPLINGRATE; - } - break; - } - - - if ( flags & AACDEC_CLRHIST ) - { - int ch; - /* Clear history */ - for (ch = 0; ch < self->aacChannels; ch++) { - /* Reset concealment */ - CConcealment_InitChannelData(&self->pAacDecoderStaticChannelInfo[ch]->concealmentInfo, - &self->concealCommonData, - self->streamInfo.aacSamplesPerFrame ); - /* Clear concealment buffers to get rid of the complete history */ - FDKmemclear(self->pAacDecoderStaticChannelInfo[ch]->concealmentInfo.spectralCoefficient, 1024 * sizeof(FIXP_CNCL)); - FDKmemclear(self->pAacDecoderStaticChannelInfo[ch]->concealmentInfo.specScale, 8 * sizeof(SHORT)); - /* Clear overlap-add buffers to avoid clicks. */ - FDKmemclear(self->pAacDecoderStaticChannelInfo[ch]->IMdct.overlap.freq, OverlapBufferSize*sizeof(FIXP_DBL)); - } - } - - - -#ifdef TP_PCE_ENABLE - int pceRead = 0; /* Flag indicating a PCE in the current raw_data_block() */ -#endif - - - INT hdaacDecoded = 0; - MP4_ELEMENT_ID previous_element = ID_END; /* Last element ID (required for extension payload mapping */ - UCHAR previous_element_index = 0; /* Canonical index of last element */ - int element_count = 0; /* Element counter for elements found in the bitstream */ - int el_cnt[ID_LAST] = { 0 }; /* element counter ( robustness ) */ - - while ( (type != ID_END) && (! (flags & (AACDEC_CONCEAL | AACDEC_FLUSH))) && self->frameOK ) - { - int el_channels; - - if (! (self->flags & (AC_USAC|AC_RSVD50|AC_ELD|AC_SCALABLE|AC_ER))) - type = (MP4_ELEMENT_ID) FDKreadBits(bs,3); - else - type = self->elements[element_count]; - - setHcrType(&self->aacCommonData.overlay.aac.erHcrInfo, type); - - - if ((INT)FDKgetValidBits(bs) < 0) - self->frameOK = 0; - - switch (type) - { - case ID_SCE: - case ID_CPE: - case ID_LFE: - /* - Consistency check - */ - - if (type == ID_CPE) { - el_channels = 2; - } else { - el_channels = 1; - } - - if ( (el_cnt[type] >= (self->ascChannels>>(el_channels-1))) || (aacChannels > (self->ascChannels-el_channels)) ) { - ErrorStatus = AAC_DEC_DECODE_FRAME_ERROR; - self->frameOK = 0; - break; - } - - if ( !(self->flags & (AC_USAC|AC_RSVD50)) ) { - int ch; - for (ch=0; ch < el_channels; ch+=1) { - CPns_ResetData(&self->pAacDecoderChannelInfo[aacChannels+ch]->data.aac.PnsData, - &self->pAacDecoderChannelInfo[aacChannels+ch]->pComData->pnsInterChannelData); - } - } - - if(self->frameOK) { - ErrorStatus = CChannelElement_Read( bs, - &self->pAacDecoderChannelInfo[aacChannels], - &self->pAacDecoderStaticChannelInfo[aacChannels], - self->streamInfo.aot, - &self->samplingRateInfo, - self->flags, - self->streamInfo.aacSamplesPerFrame, - el_channels, - self->streamInfo.epConfig, - self->hInput - ); - if (ErrorStatus) { - self->frameOK = 0; - } - } - - - if ( self->frameOK) { - /* Lookup the element and decode it only if it belongs to the current program */ - if ( CProgramConfig_LookupElement( - pce, - self->streamInfo.channelConfig, - self->pAacDecoderChannelInfo[aacChannels]->ElementInstanceTag, - aacChannels, - self->chMapping, - self->channelType, - self->channelIndices, - &previous_element_index, - self->elements, - type) ) - { - if ( !hdaacDecoded ) { - CChannelElement_Decode( - &self->pAacDecoderChannelInfo[aacChannels], - &self->pAacDecoderStaticChannelInfo[aacChannels], - &self->samplingRateInfo, - self->flags, - el_channels - ); - } - aacChannels += 1; - if (type == ID_CPE) { - aacChannels += 1; - } - } - else { - self->frameOK = 0; - } - /* Create SBR element for SBR for upsampling for LFE elements, - and if SBR was explicitly signaled, because the first frame(s) - may not contain SBR payload (broken encoder, bit errors). */ - if ( (self->flags & AC_SBR_PRESENT) || (self->sbrEnabled == 1) ) - { - SBR_ERROR sbrError; - - sbrError = sbrDecoder_InitElement( - self->hSbrDecoder, - self->streamInfo.aacSampleRate, - self->streamInfo.extSamplingRate, - self->streamInfo.aacSamplesPerFrame, - self->streamInfo.aot, - type, - previous_element_index - ); - if (sbrError != SBRDEC_OK) { - /* Do not try to apply SBR because initializing the element failed. */ - self->sbrEnabled = 0; - } - } - } - - el_cnt[type]++; - break; - - case ID_CCE: - /* - Consistency check - */ - if ( el_cnt[type] > self->ascChannels ) { - ErrorStatus = AAC_DEC_DECODE_FRAME_ERROR; - self->frameOK = 0; - break; - } - - if (self->frameOK) - { - /* memory for spectral lines temporal on scratch */ - C_ALLOC_SCRATCH_START(mdctSpec, FIXP_DBL, 1024); - - /* create dummy channel for CCE parsing on stack */ - CAacDecoderChannelInfo tmpAacDecoderChannelInfo, *pTmpAacDecoderChannelInfo; - - FDKmemclear(mdctSpec, 1024*sizeof(FIXP_DBL)); - - tmpAacDecoderChannelInfo.pDynData = self->aacCommonData.workBufferCore1->pAacDecoderDynamicData; - tmpAacDecoderChannelInfo.pComData = &self->aacCommonData; - tmpAacDecoderChannelInfo.pSpectralCoefficient = (SPECTRAL_PTR)mdctSpec; - /* Assume AAC-LC */ - tmpAacDecoderChannelInfo.granuleLength = self->streamInfo.aacSamplesPerFrame / 8; - - /* Reset PNS data. */ - CPns_ResetData(&tmpAacDecoderChannelInfo.data.aac.PnsData, &tmpAacDecoderChannelInfo.pComData->pnsInterChannelData); - - pTmpAacDecoderChannelInfo = &tmpAacDecoderChannelInfo; - /* do CCE parsing */ - ErrorStatus = CChannelElement_Read( bs, - &pTmpAacDecoderChannelInfo, - NULL, - self->streamInfo.aot, - &self->samplingRateInfo, - self->flags, - self->streamInfo.aacSamplesPerFrame, - 1, - self->streamInfo.epConfig, - self->hInput - ); - - C_ALLOC_SCRATCH_END(mdctSpec, FIXP_DBL, 1024); - - if (ErrorStatus) { - self->frameOK = 0; - } - - if (self->frameOK) { - /* Lookup the element and decode it only if it belongs to the current program */ - if (CProgramConfig_LookupElement( - pce, - self->streamInfo.channelConfig, - pTmpAacDecoderChannelInfo->ElementInstanceTag, - 0, - self->chMapping, - self->channelType, - self->channelIndices, - &previous_element_index, - self->elements, - type) ) - { - /* decoding of CCE not supported */ - } - else { - self->frameOK = 0; - } - } - } - el_cnt[type]++; - break; - - case ID_DSE: - { - UCHAR element_instance_tag; - - CDataStreamElement_Read( bs, - &self->ancData, - self->hDrcInfo, - self->hInput, - &element_instance_tag, - auStartAnchor ); - - if (!CProgramConfig_LookupElement( - pce, - self->streamInfo.channelConfig, - element_instance_tag, - 0, - self->chMapping, - self->channelType, - self->channelIndices, - &previous_element_index, - self->elements, - type) ) - { - /* most likely an error in bitstream occured */ - //self->frameOK = 0; - } - } - - { - UCHAR *pDvbAncData = NULL; - AAC_DECODER_ERROR ancErr; - int ancIndex; - int dvbAncDataSize = 0; - - /* Ask how many anc data elements are in buffer */ - ancIndex = self->ancData.nrElements - 1; - /* Get the last one (if available) */ - ancErr = CAacDecoder_AncDataGet( &self->ancData, - ancIndex, - &pDvbAncData, - &dvbAncDataSize ); - - if (ancErr == AAC_DEC_OK) { - pcmDmx_ReadDvbAncData ( - self->hPcmUtils, - pDvbAncData, - dvbAncDataSize, - 0 /* not mpeg2 */ ); - } - } - break; - -#ifdef TP_PCE_ENABLE - case ID_PCE: - { - int result = CProgramConfigElement_Read( - bs, - self->hInput, - pce, - self->streamInfo.channelConfig, - auStartAnchor ); - if ( result < 0 ) { - /* Something went wrong */ - ErrorStatus = AAC_DEC_PARSE_ERROR; - self->frameOK = 0; - } - else if ( result > 1 ) { - /* Built element table */ - int elIdx = CProgramConfig_GetElementTable(pce, self->elements, 7); - /* Reset the remaining tabs */ - for ( ; elIdx<7; elIdx++) { - self->elements[elIdx] = ID_NONE; - } - /* Make new number of channel persistant */ - self->ascChannels = pce->NumChannels; - /* If PCE is not first element conceal this frame to avoid inconsistencies */ - if ( element_count != 0 ) { - self->frameOK = 0; - } - } - pceRead = (result>=0) ? 1 : 0; - } - break; -#endif /* TP_PCE_ENABLE */ - - case ID_FIL: - { - int bitCnt = FDKreadBits(bs,4); /* bs_count */ - - if (bitCnt == 15) - { - int esc_count = FDKreadBits(bs,8); /* bs_esc_count */ - bitCnt = esc_count + 14; - } - - /* Convert to bits */ - bitCnt <<= 3; - - while (bitCnt > 0) { - ErrorStatus = CAacDecoder_ExtPayloadParse(self, bs, &bitCnt, previous_element, previous_element_index, 1); - if (ErrorStatus != AAC_DEC_OK) { - self->frameOK = 0; - break; - } - } - } - break; - - case ID_EXT: - { - INT bitCnt = 0; - - /* get the remaining bits of this frame */ - bitCnt = transportDec_GetAuBitsRemaining(self->hInput, 0); - - if ( (bitCnt > 0) && (self->flags & AC_SBR_PRESENT) && (self->flags & (AC_USAC|AC_RSVD50|AC_ELD)) ) - { - SBR_ERROR err = SBRDEC_OK; - int elIdx, numChElements = el_cnt[ID_SCE] + el_cnt[ID_CPE]; - - for (elIdx = 0; elIdx < numChElements; elIdx += 1) - { - err = sbrDecoder_Parse ( - self->hSbrDecoder, - bs, - &bitCnt, - -1, - self->flags & AC_SBRCRC, - self->elements[elIdx], - elIdx, - self->flags & AC_INDEP ); - - if (err != SBRDEC_OK) { - break; - } - } - if (err == SBRDEC_OK) { - self->sbrEnabled = 1; - } else { - self->frameOK = 0; - } - } - - - if ( ! (self->flags & (AC_USAC|AC_RSVD50|AC_DRM)) ) - { - while ( bitCnt > 7 ) { - ErrorStatus = CAacDecoder_ExtPayloadParse(self, bs, &bitCnt, previous_element, previous_element_index, 0); - if (ErrorStatus != AAC_DEC_OK) { - self->frameOK = 0; - ErrorStatus = AAC_DEC_PARSE_ERROR; - break; - } - } - } - } - break; - - case ID_END: - break; - - default: - ErrorStatus = AAC_DEC_DECODE_FRAME_ERROR; - self->frameOK = 0; - break; - } - - previous_element = type; - element_count++; - - } /* while ( (type != ID_END) ... ) */ - - if ( !(flags & (AACDEC_CONCEAL|AACDEC_FLUSH)) ) - { - /* Byte alignment with respect to the first bit of the raw_data_block(). */ - { - FDKbyteAlign(bs, auStartAnchor); - } - - /* Check if all bits of the raw_data_block() have been read. */ - if ( transportDec_GetAuBitsTotal(self->hInput, 0) > 0 ) { - INT unreadBits = transportDec_GetAuBitsRemaining(self->hInput, 0); - if ( unreadBits != 0 ) { - - self->frameOK = 0; - /* Do not overwrite current error */ - if (ErrorStatus == AAC_DEC_OK && self->frameOK == 0) { - ErrorStatus = AAC_DEC_PARSE_ERROR; - } - /* Always put the bitbuffer at the right position after the current Access Unit. */ - FDKpushBiDirectional(bs, unreadBits); - } - } - - /* Check the last element. The terminator (ID_END) has to be the last one (even if ER syntax is used). */ - if ( self->frameOK && type != ID_END ) { - /* Do not overwrite current error */ - if (ErrorStatus == AAC_DEC_OK) { - ErrorStatus = AAC_DEC_PARSE_ERROR; - } - self->frameOK = 0; - } - } - - /* More AAC channels than specified by the ASC not allowed. */ - if ( (aacChannels == 0 || aacChannels > self->aacChannels) && !(flags & (AACDEC_CONCEAL|AACDEC_FLUSH)) ) { - { - /* Do not overwrite current error */ - if (ErrorStatus == AAC_DEC_OK) { - ErrorStatus = AAC_DEC_DECODE_FRAME_ERROR; - } - self->frameOK = 0; - } - aacChannels = 0; - } - else if ( aacChannels > self->ascChannels ) { - /* Do not overwrite current error */ - if (ErrorStatus == AAC_DEC_OK) { - ErrorStatus = AAC_DEC_UNSUPPORTED_FORMAT; - } - self->frameOK = 0; - aacChannels = 0; - } - - if ( TRANSPORTDEC_OK != transportDec_CrcCheck(self->hInput) ) - { - self->frameOK=0; - } - - /* store or restore the number of channels */ - if ( self->frameOK && !(flags &(AACDEC_CONCEAL|AACDEC_FLUSH)) ) { - self->concealChannels = aacChannels; /* store */ - self->sbrEnabledPrev = self->sbrEnabled; - } else { - if (self->aacChannels > 0) { - aacChannels = self->concealChannels; /* restore */ - self->sbrEnabled = self->sbrEnabledPrev; - } - } - - /* Update number of output channels */ - self->streamInfo.aacNumChannels = aacChannels; - - #ifdef TP_PCE_ENABLE - if (pceRead == 1 && CProgramConfig_IsValid(pce)) { - /* Set matrix mixdown infos if available from PCE. */ - pcmDmx_SetMatrixMixdownFromPce ( self->hPcmUtils, - pce->MatrixMixdownIndexPresent, - pce->MatrixMixdownIndex, - pce->PseudoSurroundEnable ); - } - #endif - - /* If there is no valid data to transfrom into time domain, return. */ - if ( ! IS_OUTPUT_VALID(ErrorStatus) ) { - return ErrorStatus; - } - - /* - Inverse transform - */ - { - int stride, offset, c; - - /* Extract DRC control data and map it to channels (without bitstream delay) */ - aacDecoder_drcProlog ( - self->hDrcInfo, - bs, - self->pAacDecoderStaticChannelInfo, - self->pce.ElementInstanceTag, - self->chMapping, - aacChannels - ); - - /* "c" iterates in canonical MPEG channel order */ - for (c=0; c < aacChannels; c++) - { - CAacDecoderChannelInfo *pAacDecoderChannelInfo; - - /* Select correct pAacDecoderChannelInfo for current channel */ - if (self->chMapping[c] >= aacChannels) { - pAacDecoderChannelInfo = self->pAacDecoderChannelInfo[c]; - } else { - pAacDecoderChannelInfo = self->pAacDecoderChannelInfo[self->chMapping[c]]; - } - - /* Setup offset and stride for time buffer traversal. */ - if (interleaved) { - stride = aacChannels; - offset = self->channelOutputMapping[aacChannels-1][c]; - } else { - stride = 1; - offset = self->channelOutputMapping[aacChannels-1][c] * self->streamInfo.aacSamplesPerFrame; - } - - - /* - Conceal defective spectral data - */ - CConcealment_Apply(&self->pAacDecoderStaticChannelInfo[c]->concealmentInfo, - pAacDecoderChannelInfo, - self->pAacDecoderStaticChannelInfo[c], - &self->samplingRateInfo, - self->streamInfo.aacSamplesPerFrame, - 0, - (self->frameOK && !(flags&AACDEC_CONCEAL)), - self->flags - ); - - - if (flags & (AACDEC_INTR|AACDEC_CLRHIST)) { - /* Reset DRC control data for this channel */ - aacDecoder_drcInitChannelData ( &self->pAacDecoderStaticChannelInfo[c]->drcData ); - } - /* DRC processing */ - aacDecoder_drcApply ( - self->hDrcInfo, - self->hSbrDecoder, - pAacDecoderChannelInfo, - &self->pAacDecoderStaticChannelInfo[c]->drcData, - c, - self->streamInfo.aacSamplesPerFrame, - self->sbrEnabled - ); - - switch (pAacDecoderChannelInfo->renderMode) - { - case AACDEC_RENDER_IMDCT: - CBlock_FrequencyToTime( - self->pAacDecoderStaticChannelInfo[c], - pAacDecoderChannelInfo, - pTimeData + offset, - self->streamInfo.aacSamplesPerFrame, - stride, - (self->frameOK && !(flags&AACDEC_CONCEAL)), - self->aacCommonData.workBufferCore1->mdctOutTemp - ); - break; - case AACDEC_RENDER_ELDFB: - CBlock_FrequencyToTimeLowDelay( - self->pAacDecoderStaticChannelInfo[c], - pAacDecoderChannelInfo, - pTimeData + offset, - self->streamInfo.aacSamplesPerFrame, - stride - ); - break; - default: - ErrorStatus = AAC_DEC_UNKNOWN; - break; - } - if ( flags&AACDEC_FLUSH ) { - FDKmemclear(pAacDecoderChannelInfo->pSpectralCoefficient, sizeof(FIXP_DBL)*self->streamInfo.aacSamplesPerFrame); - FDKmemclear(self->pAacDecoderStaticChannelInfo[c]->pOverlapBuffer, OverlapBufferSize*sizeof(FIXP_DBL)); - } - } - - - /* Extract DRC control data and map it to channels (with bitstream delay) */ - aacDecoder_drcEpilog ( - self->hDrcInfo, - bs, - self->pAacDecoderStaticChannelInfo, - self->pce.ElementInstanceTag, - self->chMapping, - aacChannels - ); - } - - - /* Reorder channel type information tables. */ - { - AUDIO_CHANNEL_TYPE types[(6)]; - UCHAR idx[(6)]; - int c; - - FDK_ASSERT(sizeof(self->channelType) == sizeof(types)); - FDK_ASSERT(sizeof(self->channelIndices) == sizeof(idx)); - - FDKmemcpy(types, self->channelType, sizeof(types)); - FDKmemcpy(idx, self->channelIndices, sizeof(idx)); - - for (c=0; c<aacChannels; c++) { - self->channelType[self->channelOutputMapping[aacChannels-1][c]] = types[c]; - self->channelIndices[self->channelOutputMapping[aacChannels-1][c]] = idx[c]; - } - } - - self->blockNumber++; - - return ErrorStatus; -} - -/*! - \brief returns the streaminfo pointer - - The function hands back a pointer to the streaminfo structure - - \return pointer to the struct -*/ -LINKSPEC_CPP CStreamInfo* CAacDecoder_GetStreamInfo ( HANDLE_AACDECODER self ) -{ - if (!self) { - return NULL; - } - return &self->streamInfo; -} - - - - |