The Tor Browser: media/libopus/silk/resampler

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.

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     2 Copyright (c) 2006-2011, Skype Limited. All rights reserved.

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

     4 modification, are permitted provided that the following conditions

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     7 this list of conditions and the following disclaimer.

     8 - Redistributions in binary form must reproduce the above copyright

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

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

    11 - Neither the name of Internet Society, IETF or IETF Trust, nor the

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    14 permission.

    15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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    18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

    19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

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    21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    25 POSSIBILITY OF SUCH DAMAGE.

    26 ***********************************************************************/

    28 #ifndef SILK_RESAMPLER_PRIVATE_H

    29 #define SILK_RESAMPLER_PRIVATE_H

    31 #ifdef __cplusplus

    32 extern "C" {

    33 #endif

    35 #include "SigProc_FIX.h"

    36 #include "resampler_structs.h"

    37 #include "resampler_rom.h"

    39 /* Number of input samples to process in the inner loop */

    40 #define RESAMPLER_MAX_BATCH_SIZE_MS             10

    41 #define RESAMPLER_MAX_FS_KHZ                    48

    42 #define RESAMPLER_MAX_BATCH_SIZE_IN             ( RESAMPLER_MAX_BATCH_SIZE_MS * RESAMPLER_MAX_FS_KHZ )

    44 /* Description: Hybrid IIR/FIR polyphase implementation of resampling */

    45 void silk_resampler_private_IIR_FIR(

    46     void                            *SS,            /* I/O  Resampler state             */

    47     opus_int16                      out[],          /* O    Output signal               */

    48     const opus_int16                in[],           /* I    Input signal                */

    49     opus_int32                      inLen           /* I    Number of input samples     */

    50 );

    52 /* Description: Hybrid IIR/FIR polyphase implementation of resampling */

    53 void silk_resampler_private_down_FIR(

    54     void                            *SS,            /* I/O  Resampler state             */

    55     opus_int16                      out[],          /* O    Output signal               */

    56     const opus_int16                in[],           /* I    Input signal                */

    57     opus_int32                      inLen           /* I    Number of input samples     */

    58 );

    60 /* Upsample by a factor 2, high quality */

    61 void silk_resampler_private_up2_HQ_wrapper(

    62     void                            *SS,            /* I/O  Resampler state (unused)    */

    63     opus_int16                      *out,           /* O    Output signal [ 2 * len ]   */

    64     const opus_int16                *in,            /* I    Input signal [ len ]        */

    65     opus_int32                      len             /* I    Number of input samples     */

    66 );

    68 /* Upsample by a factor 2, high quality */

    69 void silk_resampler_private_up2_HQ(

    70     opus_int32                      *S,             /* I/O  Resampler state [ 6 ]       */

    71     opus_int16                      *out,           /* O    Output signal [ 2 * len ]   */

    72     const opus_int16                *in,            /* I    Input signal [ len ]        */

    73     opus_int32                      len             /* I    Number of input samples     */

    74 );

    76 /* Second order AR filter */

    77 void silk_resampler_private_AR2(

    78     opus_int32                      S[],            /* I/O  State vector [ 2 ]          */

    79     opus_int32                      out_Q8[],       /* O    Output signal               */

    80     const opus_int16                in[],           /* I    Input signal                */

    81     const opus_int16                A_Q14[],        /* I    AR coefficients, Q14        */

    82     opus_int32                      len             /* I    Signal length               */

    83 );

    85 #ifdef __cplusplus

    86 }

    87 #endif

    88 #endif /* SILK_RESAMPLER_PRIVATE_H */

The Tor Browser / file revision

media/libopus/silk/resampler_private.h@ac0c01689b40

media/libopus/silk/resampler_private.h