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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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27 *---------------------------------------------------------------*/ | 27 *---------------------------------------------------------------*/ |
28 | 28 |
29 void WebRtcIlbcfix_SimpleLpcAnalysis( | 29 void WebRtcIlbcfix_SimpleLpcAnalysis( |
30 int16_t *lsf, /* (o) lsf coefficients */ | 30 int16_t *lsf, /* (o) lsf coefficients */ |
31 int16_t *data, /* (i) new block of speech */ | 31 int16_t *data, /* (i) new block of speech */ |
32 IlbcEncoder *iLBCenc_inst | 32 IlbcEncoder *iLBCenc_inst |
33 /* (i/o) the encoder state structure */ | 33 /* (i/o) the encoder state structure */ |
34 ) { | 34 ) { |
35 int k; | 35 int k; |
36 int scale; | 36 int scale; |
37 int16_t is; | 37 size_t is; |
38 int16_t stability; | 38 int16_t stability; |
39 /* Stack based */ | 39 /* Stack based */ |
40 int16_t A[LPC_FILTERORDER + 1]; | 40 int16_t A[LPC_FILTERORDER + 1]; |
41 int32_t R[LPC_FILTERORDER + 1]; | 41 int32_t R[LPC_FILTERORDER + 1]; |
42 int16_t windowedData[BLOCKL_MAX]; | 42 int16_t windowedData[BLOCKL_MAX]; |
43 int16_t rc[LPC_FILTERORDER]; | 43 int16_t rc[LPC_FILTERORDER]; |
44 | 44 |
45 is=LPC_LOOKBACK+BLOCKL_MAX-iLBCenc_inst->blockl; | 45 is=LPC_LOOKBACK+BLOCKL_MAX-iLBCenc_inst->blockl; |
46 WEBRTC_SPL_MEMCPY_W16(iLBCenc_inst->lpc_buffer+is,data,iLBCenc_inst->blockl); | 46 WEBRTC_SPL_MEMCPY_W16(iLBCenc_inst->lpc_buffer+is,data,iLBCenc_inst->blockl); |
47 | 47 |
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85 /* Convert from A to LSF representation */ | 85 /* Convert from A to LSF representation */ |
86 WebRtcIlbcfix_Poly2Lsf(lsf + k*LPC_FILTERORDER, A); | 86 WebRtcIlbcfix_Poly2Lsf(lsf + k*LPC_FILTERORDER, A); |
87 } | 87 } |
88 | 88 |
89 is=LPC_LOOKBACK+BLOCKL_MAX-iLBCenc_inst->blockl; | 89 is=LPC_LOOKBACK+BLOCKL_MAX-iLBCenc_inst->blockl; |
90 WEBRTC_SPL_MEMCPY_W16(iLBCenc_inst->lpc_buffer, | 90 WEBRTC_SPL_MEMCPY_W16(iLBCenc_inst->lpc_buffer, |
91 iLBCenc_inst->lpc_buffer+LPC_LOOKBACK+BLOCKL_MAX-is, is)
; | 91 iLBCenc_inst->lpc_buffer+LPC_LOOKBACK+BLOCKL_MAX-is, is)
; |
92 | 92 |
93 return; | 93 return; |
94 } | 94 } |
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