functionname: FDKaacEnc_adaptMinSnr description: reduce minSnr requirements for bands with relative low energies ********************************

Function: FDKaacEnc_assimilateMultipleScf */

functionname: FDKaacEnc_calcFrameLen description: returns: input: output: ***********************************************************

Function: FDKaacEnc_calcSingleSpecPe specPe is scaled by 1/(2^(2*AS_PE_FAC_SHIFT)) */

functionname: FDKaacEnc_calcThreshExp description: loudness calculation (threshold to the power of redExp) ******************************************

Function: FDKaacEnc_countSingleScfBits Description: scfBitsFract is scaled by 1/(2^(2*AS_PE_FAC_SHIFT)) */

essential helper functions */

functionname: FDKaacEnc_fuzzyIsSmaller description: Fuzzy value calculation for "testVal is smaller than refVal" returns: fuzzy value

functionname: FDKaacEnc_initAvoidHoleFlag description: determine bands where avoid hole is not necessary resp. possible *****************************

functionname:iFDKaacEnc_quantizeLines description: iquantizes spectrum lines mdctSpectrum = iquaSpectrum^4/3 *2^(0.25*gain) i

functionname: FDKaacEnc_quantizeLines description: quantizes spectrum lines returns: input: global gain, number of lines to process, spect

functionname: FDKaacEnc_writeExtensionPayload description: write extension payload to bitstream returns: number of written bits inpu

functionname: FDKsbrEnc_EnvEncodeFrame description: performs the sbr envelope calculation for one element returns: input: output: ***************

Functionname: FDKsbrEnc_FindStartAndStopBand ******************************************************************************* Description: Argumen

Functionname: FDKsbrEnc_InitSbrCodeEnvelope ******************************************************************************* Description: Argumen

functionname: FDKsbrEnc_LSI_divide_scale_fract description: Calculates division with best precision and scales the result. return: num*sc

functionname: FDKsbrEnc_WriteEnvChannelPairElement description: writes pure SBR channel pair data element returns: number of bits writte

! Functionname: FDKsbrEnc_frameInfoGenerator Description: produces the FRAME_INFO struct for the current frame Arguments: hSbrEnvFrame

Functionname: getSbrStopFreq ******************************************************************************* Description: Arguments: Return: *

/ ! \brief resets sbr inverse filtering structure. \return errorCode, noError if successful. */ /

/ ! \brief Resets the current instance of the noise floor estiamtion module. \return errorCode, noError if successful */ /

* \brief WriteBits Function (backward). This function writes numberOfBits of value into bitstream. * * \param hBitStream HANDLE_FDK_BITSTREAM handle

Table 4.4.1 */

* QMF data */ The SBR encoder uses a single channel overlapping buffer set (always n=0), but PS does not. */

* \brief determine the required shift scale for the given quantized value and scale (factor % 4) value. */

* NAME: III_aliasreduce() * DESCRIPTION: perform frequency line alias reduction */

* NAME: III_imdct_l() * DESCRIPTION: perform IMDCT and windowing for long blocks */

* NAME: III_imdct_s() * DESCRIPTION: perform IMDCT and windowing for short blocks */

* NAME: II_samples() * DESCRIPTION: decode three requantized Layer II samples from a bitstream */

* NAME: I_sample() * DESCRIPTION: decode one requantized Layer I sample from a bitstream */

Init the library using a DecoderSpecificInfo */

! \brief crc interface \return 1: CRC OK, 0: CRC check failure */

* Prepare DRC processing */

! \brief Save DRC payload bitstream position \self Handle of DRC info \bs Handle of FDK bitstream \return The number of DRC payload bits */

* Now we have SETTINGS synchronization, flow control error can be * detected strictly. If DATA frame is received with length > 0 and * current recei

Table 1.A.5 */

amount of bytes already consumed */

! \brief crc calculation */

Functionname: calcCmonBorder ******************************************************************************* Description: Arguments: i_cmon

* \brief Calculate crc bytes. * * Calculate crc starting at current bitstream postion over nBytes. * * \param pCrc Pointer to an

Returns 0 if an object type is decodable, otherwise returns -1 */

* NAME: dct32() * DESCRIPTION: perform fast in[32]->out[32] DCT */

! \brief Build new noise levels from old ones and delta coded data */

* NAME: decode_header() * DESCRIPTION: read header data and following CRC word */

/ ! \brief huffman decoding by codebook table \return index of huffman codebook table *********************************************************

* Decodes |prefix| prefixed integer stored from |in|. The |last| * represents the 1 beyond the last of the valid contiguous memory * region from |i

! \brief Delete sbr decoder structure \return errorCode, 0 if successful */

/ ! \brief Decodes delta values in-place and updates data buffers according to quantization classes. When delta coded in frequency the

! \brief Build new reference energies from old ones and delta coded data */

delta decode array */

delta modulo decode array */ in: log2 value of the modulo value to allow using AND instead of MOD */

destroy limiter */

* Detects the dependency error, that is stream attempted to depend on * itself. If |stream_id| is -1, we use session->next_stream_id as * stream ID

/ ! \brief Detection for one tonality estimate. This is the actual missing harmonics detection, using information from the previous detecti

functionname: encodeExtendedData description: writes bits corresponding to the extended data returns: number of bits written input:

functionname: encodeSbrData description: encodes sbr Data information returns: number of bits written input: output: **********

functionname: encodeSbrHeader description: encodes SBR Header information returns: number of bits written input: output: ******

functionname: encodeSbrHeaderData description: writes sbr_header() bs_protocol_version through bs_header_extra_2 returns:

--------------------------------------------------------------------------------------------- description: Check both HCR lengths -------------

--------------------------------------------------------------------------------------------- description: Check if codebook and numSect are wi

Table 4.4.30 */

! \brief Reads extension data from the bitstream The bitstream format allows up to 4 kinds of extended data element. Extended data may con