media/libopus/celt/mfrngcod.h@b8a032363ba2 (annotated)
media/libopus/celt/mfrngcod.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* Copyright (c) 2001-2008 Timothy B. Terriberry |
| michael@0 | 2 | Copyright (c) 2008-2009 Xiph.Org Foundation */ |
| michael@0 | 3 | /* |
| michael@0 | 4 | Redistribution and use in source and binary forms, with or without |
| michael@0 | 5 | modification, are permitted provided that the following conditions |
| michael@0 | 6 | are met: |
| michael@0 | 7 | |
| michael@0 | 8 | - Redistributions of source code must retain the above copyright |
| michael@0 | 9 | notice, this list of conditions and the following disclaimer. |
| michael@0 | 10 | |
| michael@0 | 11 | - Redistributions in binary form must reproduce the above copyright |
| michael@0 | 12 | notice, this list of conditions and the following disclaimer in the |
| michael@0 | 13 | documentation and/or other materials provided with the distribution. |
| michael@0 | 14 | |
| michael@0 | 15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| michael@0 | 16 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| michael@0 | 17 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| michael@0 | 18 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER |
| michael@0 | 19 | OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| michael@0 | 20 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| michael@0 | 21 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| michael@0 | 22 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| michael@0 | 23 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| michael@0 | 24 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| michael@0 | 25 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| michael@0 | 26 | */ |
| michael@0 | 27 | |
| michael@0 | 28 | #if !defined(_mfrngcode_H) |
| michael@0 | 29 | # define _mfrngcode_H (1) |
| michael@0 | 30 | # include "entcode.h" |
| michael@0 | 31 | |
| michael@0 | 32 | /*Constants used by the entropy encoder/decoder.*/ |
| michael@0 | 33 | |
| michael@0 | 34 | /*The number of bits to output at a time.*/ |
| michael@0 | 35 | # define EC_SYM_BITS (8) |
| michael@0 | 36 | /*The total number of bits in each of the state registers.*/ |
| michael@0 | 37 | # define EC_CODE_BITS (32) |
| michael@0 | 38 | /*The maximum symbol value.*/ |
| michael@0 | 39 | # define EC_SYM_MAX ((1U<<EC_SYM_BITS)-1) |
| michael@0 | 40 | /*Bits to shift by to move a symbol into the high-order position.*/ |
| michael@0 | 41 | # define EC_CODE_SHIFT (EC_CODE_BITS-EC_SYM_BITS-1) |
| michael@0 | 42 | /*Carry bit of the high-order range symbol.*/ |
| michael@0 | 43 | # define EC_CODE_TOP (((opus_uint32)1U)<<(EC_CODE_BITS-1)) |
| michael@0 | 44 | /*Low-order bit of the high-order range symbol.*/ |
| michael@0 | 45 | # define EC_CODE_BOT (EC_CODE_TOP>>EC_SYM_BITS) |
| michael@0 | 46 | /*The number of bits available for the last, partial symbol in the code field.*/ |
| michael@0 | 47 | # define EC_CODE_EXTRA ((EC_CODE_BITS-2)%EC_SYM_BITS+1) |
| michael@0 | 48 | #endif |
