functionname: DeleteEnvChannel description: frees memory of one SBR channel returns: - input: handle of channel output: release

! \brief Create envelope instance Must be called once for each channel before calculateSbrEnvelope() can be used. \return errorCode, 0 if s

calculate the derived frequency border tables from f_master */

/ ! \brief Do detection for every tonality estimate, using forward prediction. \return none. */ /

convert dialog normalization to program reference level */ NOTE: this only is correct, if the decoder target level is set to -31dB for line mode / -20

Private helper function for downmix matrix manipulation that initializes * one row in a given downmix matrix (corresponding to one output channel).

/ ! \brief \return errorCode, noError if successful */ /

main DRM PS decoding function */

Table 4.4.31 */

* \brief Configure SBR for ELD configuration. * * This function finds default SBR configuration for ELD based on sampling rate and channel bitrate.

encode AAC compression value (ETSI TS 101 154 page 99) */

encode downmix levels to Downmixing_levels_MPEG4 */

encode AAC DRC gain (ISO/IEC 14496-3:2005 4.5.2.7) */

functionname: encodeSbrChannelPairElement description: encodes sbr CPE information returns: input: output: *************************

functionname: encodeSbrSingleChannelElement description: encodes sbr SCE information returns: number of bits written input: outp

function constructs new time border vector */ first build into temp vector to be able to use previous vector on error */

! \brief Equalize exponents of the buffered gain values and the new ones After equalization of exponents, the FIR-filter addition for smoothing

--------------------------------------------------------------------------------------------- description: This function checks if all segments

Routine to print out an error

Table 4.4.32 */

! \brief Extracts LowDelaySBR control data from the bitstream. \return zero for bitstream error, one for correct. */

y = (x-0.5*a*b) */

return the original data buffer */

return the original data buffer size */

reset to a certain point */

reversed bitreading routines */

The function performs the fft of length 240. It is splittet into fft's of length 16 and fft's of length 15. Between the fft's a modulation is calculat

The function performs the fft of length 480. It is splittet into fft's of length 32 and fft's of length 15. Between the fft's a modulation is calculat

The function performs the fft of length 60. It is splittet into fft's of length 4 and fft's of length 15. Between the fft's a modolation is calculated

FFT decimation in frequency 4*16*2+16=128+16=144 multiplications 6*16*2+10*8+4*16*2=192+80+128=400 additions

Functionname: fillFrameInter ******************************************************************************* Description: Arguments: nL

Functionname: fillFrameTran ******************************************************************************* Description: Add mandatory borders, a

fixed point square root approximation */ !!!! ONLY WORKS FOR EVEN %REAL_BITS% !!!! */

* NAME: free_bitrate() * DESCRIPTION: attempt to discover the bitstream's free bitrate */

Find the exact or preceding frame in lookup_table[]. Return both frame * and byte position of this match. */

* NAME: gcd() * DESCRIPTION: compute greatest common denominator */

/ ! \brief Gnerates frame info for FIXFIXonly frame class used for low delay version \return nothing **************************************

/ ! \brief Generates frame info for FIXFIXonly frame class used for low delay version \return nothing *************************************

! \brief crc */

--------------------------------------------------------------------------------------------- description: Gets HCR type from the HCR data stru