* \brief get implicit audio channel type for given channelConfig and MPEG ordered channel index * \param channelConfig MPEG channelConfiguration from

get delay in samples */

Private function that creates a downmix factor matrix depending on the input and output * configuration, the user parameters as well as the given me

* \brief Get frame period of PCE in raw_data_block. * * - Write PCE only if necessary. PCE can be part of the ASC if chConfig==0 whererfore *

Table entries are sorted as following: | num_swb_long_window | sfbands_long | num_swb_short_window | sfbands_short | */

functionname: getSbrExtendedDataSize description: counts the number of bits needed for encoding the extended data (including ex

/ ! \brief Get scale factor for all ps delay buffer. \return ****************************************************************************/

! \brief Retrieve QMF-band where the SBR range starts Convert startFreq which was read from the bitstream into a QMF-channel number. \re

! \brief Retrieve QMF-band where the SBR range starts Convert startFreq which was read from the bitstream into a QMF-channel number. \re

Table 1.A.2 */

* Finalize indexed header representation reception. The referenced * header is always emitted, and |*nv_out| is filled with that value. */

* @brief simple http_get * see https://github.com/nodejs/http-parser for callback usage */

* Encodes huffman code |sym| into |*dest_ptr|, whose least |rembits| * bits are not filled yet. The |rembits| must be in range [1, 8], * inclusive.

Hybrid analysis: further split up QMF subbands * to improve frequency resolution */

* NAME: imdct36 * DESCRIPTION: perform X[18]->x[36] IMDCT using Szu-Wei Lee's fast algorithm */

* Unpacks SETTINGS entry in iframe->sbuf. */

Functionname: indexLow2High ******************************************************************************* Description: Nice small patch-functi

! \brief Convert table index */

* Inflates header block in the memory pointed by |in| with |inlen| * bytes. If this function returns NGHTTP2_ERR_PAUSE, the caller must * call this

functionname: initEnvChannel description: initializes parameters returns: error status input: output: *************************************

! \brief Initialize the SBR_PREV_FRAME_DATA struct */

* Output audio data to I2S and setup MerusAudio digital power amplifier */

* \brief Calculate cosine and sine value each of 2 angles different angle values. * \param x1 first angle value * \param x2 second angle value * \p

/ ! \brief Checks if it is allowed to detect a missing tone, that wasn't detected previously. \return newDetectionAllowed fl

* Returns non-zero if |lib_error| is non-fatal error. */

! \brief Simple alternative to the real SBR concealment If the real frameInfo is not available due to a frame loss, a replacement will be co

! \brief Verify that the noise levels are within the allowed range The function is equivalent to checkEnvelopeData(). When the noise-levels a

TODO: blegh, ugly */ Modified to calculate for all possible bs_limiter_bands always * This reduces the number calls to this functions needed (now onl

* NAME: fixed->abs() * DESCRIPTION: return absolute value of a fixed-point number */

* NAME: frame->finish() * DESCRIPTION: deallocate any dynamic memory associated with frame */

* NAME: header->init() * DESCRIPTION: initialize header struct */

* NAME: stream->buffer() * DESCRIPTION: set stream buffer pointers */

* NAME: stream->errorstr() * DESCRIPTION: return a string description of the current error condition */

* NAME: stream->finish() * DESCRIPTION: deallocate any dynamic memory associated with stream */

* NAME: synth->mute() * DESCRIPTION: zero all polyphase filterbank values, resetting synthesis */

* NAME: timer->set() * DESCRIPTION: set timer to specific (positive) value */

FIXED POINT: bwArray = COEF */

! \brief Map sine flags from bitstream to QMF bands The bitstream carries only 1 sine flag per band and frame. This function maps every sin

version for bs_freq_scale > 0 */

calculate the master frequency table from k0, k2, bs_freq_scale and bs_alter_scale version for bs_freq_scale = 0 */

! \brief Adapt width of frequency bands in the second region If SBR spans more than 2 octaves, the upper part of a bark-frequency-scale is