sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 1 | /* Copyright (c) 2011 Xiph.Org Foundation |
| 2 | Written by Gregory Maxwell */ |
| 3 | /* |
| 4 | Redistribution and use in source and binary forms, with or without |
| 5 | modification, are permitted provided that the following conditions |
| 6 | are met: |
| 7 | |
| 8 | - Redistributions of source code must retain the above copyright |
| 9 | notice, this list of conditions and the following disclaimer. |
| 10 | |
| 11 | - Redistributions in binary form must reproduce the above copyright |
| 12 | notice, this list of conditions and the following disclaimer in the |
| 13 | documentation and/or other materials provided with the distribution. |
| 14 | |
| 15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 16 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 17 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 18 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER |
| 19 | OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 20 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 22 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 23 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 24 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 25 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
tlegrand@google.com | 3c3902f | 2013-12-09 08:35:25 +0000 | [diff] [blame^] | 28 | static OPUS_INLINE void deb2_impl(unsigned char *_t,unsigned char **_p,int _k,int _x,int _y) |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 29 | { |
| 30 | int i; |
| 31 | if(_x>2){ |
| 32 | if(_y<3)for(i=0;i<_y;i++)*(--*_p)=_t[i+1]; |
| 33 | }else{ |
| 34 | _t[_x]=_t[_x-_y]; |
| 35 | deb2_impl(_t,_p,_k,_x+1,_y); |
| 36 | for(i=_t[_x-_y]+1;i<_k;i++){ |
| 37 | _t[_x]=i; |
| 38 | deb2_impl(_t,_p,_k,_x+1,_x); |
| 39 | } |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | /*Generates a De Bruijn sequence (k,2) with length k^2*/ |
tlegrand@google.com | 3c3902f | 2013-12-09 08:35:25 +0000 | [diff] [blame^] | 44 | static OPUS_INLINE void debruijn2(int _k, unsigned char *_res) |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 45 | { |
| 46 | unsigned char *p; |
| 47 | unsigned char *t; |
| 48 | t=malloc(sizeof(unsigned char)*_k*2); |
| 49 | memset(t,0,sizeof(unsigned char)*_k*2); |
| 50 | p=&_res[_k*_k]; |
| 51 | deb2_impl(t,&p,_k,1,1); |
| 52 | free(t); |
| 53 | } |
| 54 | |
| 55 | /*MWC RNG of George Marsaglia*/ |
| 56 | static opus_uint32 Rz, Rw; |
tlegrand@google.com | 3c3902f | 2013-12-09 08:35:25 +0000 | [diff] [blame^] | 57 | static OPUS_INLINE opus_uint32 fast_rand(void) |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 58 | { |
| 59 | Rz=36969*(Rz&65535)+(Rz>>16); |
| 60 | Rw=18000*(Rw&65535)+(Rw>>16); |
| 61 | return (Rz<<16)+Rw; |
| 62 | } |
| 63 | static opus_uint32 iseed; |
| 64 | |
| 65 | #ifdef __GNUC__ |
| 66 | __attribute__((noreturn)) |
| 67 | #endif |
tlegrand@google.com | 3c3902f | 2013-12-09 08:35:25 +0000 | [diff] [blame^] | 68 | static OPUS_INLINE void _test_failed(const char *file, int line) |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 69 | { |
| 70 | fprintf(stderr,"\n ***************************************************\n"); |
| 71 | fprintf(stderr," *** A fatal error was detected. ***\n"); |
| 72 | fprintf(stderr," ***************************************************\n"); |
| 73 | fprintf(stderr,"Please report this failure and include\n"); |
| 74 | fprintf(stderr,"'make check SEED=%u fails %s at line %d for %s'\n",iseed,file,line,opus_get_version_string()); |
| 75 | fprintf(stderr,"and any relevant details about your system.\n\n"); |
| 76 | abort(); |
| 77 | } |
| 78 | #define test_failed() _test_failed(__FILE__, __LINE__); |