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audio_coding/codecs/isac/main: Replaced macro WEBRTC_SPL_RSHIFT_W32 with >>

Browse Source 
BUG=3348,3353
TESTED=locally on linux and trybots
R=henrik.lundin@webrtc.org, kwiberg@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/30739004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7474 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
bjornv@webrtc.org 2014-10-20 08:26:41 +00:00
parent a5ce7bbe17
commit 2abebe7baf
1 changed files with 8 additions and 13 deletions
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21
webrtc/modules/audio_coding/codecs/isac/main/source/entropy_coding.c
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@ -106,14 +106,13 @@ static void FindInvArSpec(const int16_t* ARCoefQ12,
for (n = 0; n < AR_ORDER + 1; n++) {
sum += WEBRTC_SPL_MUL(ARCoefQ12[n], ARCoefQ12[n]); /* Q24 */
}
sum = WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(WEBRTC_SPL_RSHIFT_W32(sum, 6),
65) + 32768, 16); /* Q8 */
CorrQ11[0] = WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(sum, gainQ10) + 256, 9);
sum = ((sum >> 6) * 65 + 32768) >> 16; /* Q8 */
CorrQ11[0] = (sum * gainQ10 + 256) >> 9;
/* To avoid overflow, we shift down gainQ10 if it is large.
* We will not lose any precision */
if (gainQ10 > 400000) {
tmpGain = WEBRTC_SPL_RSHIFT_W32(gainQ10, 3);
tmpGain = gainQ10 >> 3;
round = 32;
shftVal = 6;
} else {
@ -126,9 +125,8 @@ static void FindInvArSpec(const int16_t* ARCoefQ12,
sum = 16384;
for (n = k; n < AR_ORDER + 1; n++)
sum += WEBRTC_SPL_MUL(ARCoefQ12[n - k], ARCoefQ12[n]); /* Q24 */
sum = WEBRTC_SPL_RSHIFT_W32(sum, 15);
CorrQ11[k] = WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(sum, tmpGain) + round,
shftVal);
sum >>= 15;
CorrQ11[k] = (sum * tmpGain + round) >> shftVal;
}
sum = WEBRTC_SPL_LSHIFT_W32(CorrQ11[0], 7);
for (n = 0; n < FRAMESAMPLES / 8; n++) {
@ -136,8 +134,7 @@ static void FindInvArSpec(const int16_t* ARCoefQ12,
}
for (k = 1; k < AR_ORDER; k += 2) {
for (n = 0; n < FRAMESAMPLES / 8; n++) {
CurveQ16[n] += WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(
WebRtcIsac_kCos[k][n], CorrQ11[k + 1]) + 2, 2);
CurveQ16[n] += (WebRtcIsac_kCos[k][n] * CorrQ11[k + 1] + 2) >> 2;
}
}
@ -155,14 +152,12 @@ static void FindInvArSpec(const int16_t* ARCoefQ12,
shftVal = 0;
}
for (n = 0; n < FRAMESAMPLES / 8; n++) {
diffQ16[n] = WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(
CS_ptrQ9[n], WEBRTC_SPL_RSHIFT_W32(CorrQ11[1], shftVal)) + 2, 2);
diffQ16[n] = (CS_ptrQ9[n] * (CorrQ11[1] >> shftVal) + 2) >> 2;
}
for (k = 2; k < AR_ORDER; k += 2) {
CS_ptrQ9 = WebRtcIsac_kCos[k];
for (n = 0; n < FRAMESAMPLES / 8; n++) {
diffQ16[n] += WEBRTC_SPL_RSHIFT_W32(WEBRTC_SPL_MUL(
CS_ptrQ9[n], WEBRTC_SPL_RSHIFT_W32(CorrQ11[k + 1], shftVal)) + 2, 2);
diffQ16[n] += (CS_ptrQ9[n] * (CorrQ11[k + 1] >> shftVal) + 2) >> 2;
}
}