The Tor Browser: media/libopus/celt/vq.h@ac0c01689b40

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /* Copyright (c) 2007-2008 CSIRO

     2    Copyright (c) 2007-2009 Xiph.Org Foundation

     3    Written by Jean-Marc Valin */

     4 /**

     5    @file vq.h

     6    @brief Vector quantisation of the residual

     7  */

     8 /*

     9    Redistribution and use in source and binary forms, with or without

    10    modification, are permitted provided that the following conditions

    11    are met:

    13    - Redistributions of source code must retain the above copyright

    14    notice, this list of conditions and the following disclaimer.

    16    - Redistributions in binary form must reproduce the above copyright

    17    notice, this list of conditions and the following disclaimer in the

    18    documentation and/or other materials provided with the distribution.

    20    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    21    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    22    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    23    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER

    24    OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    25    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    26    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    27    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

    28    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

    29    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

    30    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    31 */

    33 #ifndef VQ_H

    34 #define VQ_H

    36 #include "entenc.h"

    37 #include "entdec.h"

    38 #include "modes.h"

    40 /** Algebraic pulse-vector quantiser. The signal x is replaced by the sum of

    41   * the pitch and a combination of pulses such that its norm is still equal

    42   * to 1. This is the function that will typically require the most CPU.

    43  * @param X Residual signal to quantise/encode (returns quantised version)

    44  * @param N Number of samples to encode

    45  * @param K Number of pulses to use

    46  * @param enc Entropy encoder state

    47  * @ret A mask indicating which blocks in the band received pulses

    48 */

    49 unsigned alg_quant(celt_norm *X, int N, int K, int spread, int B,

    50       ec_enc *enc

    51 #ifdef RESYNTH

    52       , opus_val16 gain

    53 #endif

    54       );

    56 /** Algebraic pulse decoder

    57  * @param X Decoded normalised spectrum (returned)

    58  * @param N Number of samples to decode

    59  * @param K Number of pulses to use

    60  * @param dec Entropy decoder state

    61  * @ret A mask indicating which blocks in the band received pulses

    62  */

    63 unsigned alg_unquant(celt_norm *X, int N, int K, int spread, int B,

    64       ec_dec *dec, opus_val16 gain);

    66 void renormalise_vector(celt_norm *X, int N, opus_val16 gain);

    68 int stereo_itheta(celt_norm *X, celt_norm *Y, int stereo, int N);

    70 #endif /* VQ_H */

The Tor Browser / file revision

media/libopus/celt/vq.h@ac0c01689b40

media/libopus/celt/vq.h