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1 /* | 1 /* |
2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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112 /* references */ | 112 /* references */ |
113 target = downsampled + 60 + iblock * ENH_BLOCKL_HALF; | 113 target = downsampled + 60 + iblock * ENH_BLOCKL_HALF; |
114 regressor = target - 10; | 114 regressor = target - 10; |
115 | 115 |
116 /* scaling */ | 116 /* scaling */ |
117 max16 = WebRtcSpl_MaxAbsValueW16(®ressor[-50], ENH_BLOCKL_HALF + 50 - 1); | 117 max16 = WebRtcSpl_MaxAbsValueW16(®ressor[-50], ENH_BLOCKL_HALF + 50 - 1); |
118 shifts = WebRtcSpl_GetSizeInBits((uint32_t)(max16 * max16)) - 25; | 118 shifts = WebRtcSpl_GetSizeInBits((uint32_t)(max16 * max16)) - 25; |
119 shifts = WEBRTC_SPL_MAX(0, shifts); | 119 shifts = WEBRTC_SPL_MAX(0, shifts); |
120 | 120 |
121 /* compute cross correlation */ | 121 /* compute cross correlation */ |
122 WebRtcSpl_CrossCorrelation(corr32, target, regressor, | 122 WebRtcSpl_CrossCorrelation(corr32, target, regressor, ENH_BLOCKL_HALF, 50, |
123 ENH_BLOCKL_HALF, 50, (int16_t)shifts, -1); | 123 shifts, -1); |
124 | 124 |
125 /* Find 3 highest correlations that should be compared for the | 125 /* Find 3 highest correlations that should be compared for the |
126 highest (corr*corr)/ener */ | 126 highest (corr*corr)/ener */ |
127 | 127 |
128 for (i=0;i<2;i++) { | 128 for (i=0;i<2;i++) { |
129 lagmax[i] = WebRtcSpl_MaxIndexW32(corr32, 50); | 129 lagmax[i] = WebRtcSpl_MaxIndexW32(corr32, 50); |
130 corrmax[i] = corr32[lagmax[i]]; | 130 corrmax[i] = corr32[lagmax[i]]; |
131 start = lagmax[i] - 2; | 131 start = lagmax[i] - 2; |
132 stop = lagmax[i] + 2; | 132 stop = lagmax[i] + 2; |
133 start = WEBRTC_SPL_MAX(0, start); | 133 start = WEBRTC_SPL_MAX(0, start); |
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198 regressor=in+tlag-1; | 198 regressor=in+tlag-1; |
199 | 199 |
200 /* scaling */ | 200 /* scaling */ |
201 max16 = WebRtcSpl_MaxAbsValueW16(regressor, plc_blockl + 3 - 1); | 201 max16 = WebRtcSpl_MaxAbsValueW16(regressor, plc_blockl + 3 - 1); |
202 if (max16>5000) | 202 if (max16>5000) |
203 shifts=2; | 203 shifts=2; |
204 else | 204 else |
205 shifts=0; | 205 shifts=0; |
206 | 206 |
207 /* compute cross correlation */ | 207 /* compute cross correlation */ |
208 WebRtcSpl_CrossCorrelation(corr32, target, regressor, | 208 WebRtcSpl_CrossCorrelation(corr32, target, regressor, plc_blockl, 3, shifts, |
209 plc_blockl, 3, (int16_t)shifts, 1); | 209 1); |
210 | 210 |
211 /* find lag */ | 211 /* find lag */ |
212 lag=WebRtcSpl_MaxIndexW32(corr32, 3); | 212 lag=WebRtcSpl_MaxIndexW32(corr32, 3); |
213 lag+=tlag-1; | 213 lag+=tlag-1; |
214 | 214 |
215 /* Copy the backward PLC to plc_pred */ | 215 /* Copy the backward PLC to plc_pred */ |
216 | 216 |
217 if (iLBCdec_inst->prev_enh_pl==1) { | 217 if (iLBCdec_inst->prev_enh_pl==1) { |
218 if (lag>plc_blockl) { | 218 if (lag>plc_blockl) { |
219 WEBRTC_SPL_MEMCPY_W16(plc_pred, &in[lag-plc_blockl], plc_blockl); | 219 WEBRTC_SPL_MEMCPY_W16(plc_pred, &in[lag-plc_blockl], plc_blockl); |
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365 WebRtcIlbcfix_Enhancer(out + iblock * ENH_BLOCKL, | 365 WebRtcIlbcfix_Enhancer(out + iblock * ENH_BLOCKL, |
366 enh_buf, | 366 enh_buf, |
367 ENH_BUFL, | 367 ENH_BUFL, |
368 (int16_t)(iblock * ENH_BLOCKL + startPos), | 368 (int16_t)(iblock * ENH_BLOCKL + startPos), |
369 enh_period, | 369 enh_period, |
370 (int16_t*)WebRtcIlbcfix_kEnhPlocs, ENH_NBLOCKS_TOT); | 370 (int16_t*)WebRtcIlbcfix_kEnhPlocs, ENH_NBLOCKS_TOT); |
371 } | 371 } |
372 | 372 |
373 return (lag); | 373 return (lag); |
374 } | 374 } |
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