generic-library/webrtc
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Fixes link issues in google3 (change by tomasl).

Browse Source 
Review URL: https://webrtc-codereview.appspot.com/509001

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2090 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
asapersson@webrtc.org 2012-04-23 13:10:55 +00:00
parent 83ed0a4359
commit 92591adc67
1 changed files with 1 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
src/modules/audio_coding/codecs/iSAC/main/source/entropy_coding.c
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
@ -37,20 +37,6 @@
static const WebRtc_UWord16 kLpcVecPerSegmentUb12 = 5;
static const WebRtc_UWord16 kLpcVecPerSegmentUb16 = 4;
/* coefficients for the stepwise rate estimation */
static const WebRtc_Word32 kRPointsQ10[100] = {
14495, 14295, 14112, 13944, 13788, 13643, 13459, 13276, 13195, 13239,
13243, 13191, 13133, 13216, 13263, 13330, 13316, 13242, 13191, 13106,
12942, 12669, 12291, 11840, 11361, 10795, 10192, 9561, 8934, 8335,
7750, 7161, 6589, 6062, 5570, 5048, 4548, 4069, 3587, 3143,
2717, 2305, 1915, 1557, 1235, 963, 720, 541, 423, 366,
369, 435, 561, 750, 1001, 1304, 1626, 1989, 2381, 2793,
3219, 3656, 4134, 4612, 5106, 5629, 6122, 6644, 7216, 7801,
8386, 8987, 9630, 10255, 10897, 11490, 11950, 12397, 12752, 12999,
13175, 13258, 13323, 13290, 13296, 13335, 13113, 13255, 13347, 13355,
13298, 13247, 13313, 13155, 13267, 13313, 13374, 13446, 13525, 13609};
/* cdf array for encoder bandwidth (12 vs 16 kHz) indicator */
static const WebRtc_UWord16 kOneBitEqualProbCdf[3] = {
0, 32768, 65535 };
@ -70,40 +56,8 @@ static const WebRtc_Word32 acnQ10 = 426;
static const WebRtc_Word32 bcnQ10 = -581224;
static const WebRtc_Word32 ccnQ10 = 722631;
static const WebRtc_Word32 lbcnQ10 = -402874;
#define DPMIN_Q10 -10240 // -10.00 in Q10
#define DPMAX_Q10 10240 // 10.00 in Q10
#define MINBITS_Q10 10240 /* 10.0 in Q10 */
#define IS_SWB_12KHZ 1
__inline WebRtc_UWord32 stepwise(WebRtc_Word32 dinQ10) {
WebRtc_Word32 ind, diQ10, dtQ10;
diQ10 = dinQ10;
if (diQ10 < DPMIN_Q10)
diQ10 = DPMIN_Q10;
if (diQ10 >= DPMAX_Q10)
diQ10 = DPMAX_Q10 - 1;
dtQ10 = diQ10 - DPMIN_Q10; /* Q10 + Q10 = Q10 */
ind = (dtQ10 * 5) >> 10; /* 2^10 / 5 = 0.2 in Q10 */
/* Q10 -> Q0 */
return kRPointsQ10[ind];
}
__inline short log2_Q10_B( int x )
{
int zeros;
short frac;
zeros = WebRtcSpl_NormU32( x );
frac = ((unsigned int)(x << zeros) & 0x7FFFFFFF) >> 21;
return (short) (((31 - zeros) << 10) + frac);
}
/* compute correlation from power spectrum */
static void WebRtcIsac_FindCorrelation(WebRtc_Word32 *PSpecQ12, WebRtc_Word32 *CorrQ7)