mirror of
https://github.com/oxen-io/session-android.git
synced 2024-12-04 23:45:14 +00:00
72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 2011 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
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
/******************************************************************
|
|
|
|
iLBC Speech Coder ANSI-C Source Code
|
|
|
|
WebRtcIlbcfix_InitEncode.c
|
|
|
|
******************************************************************/
|
|
|
|
#include "defines.h"
|
|
#include "constants.h"
|
|
|
|
/*----------------------------------------------------------------*
|
|
* Initiation of encoder instance.
|
|
*---------------------------------------------------------------*/
|
|
|
|
int16_t WebRtcIlbcfix_InitEncode( /* (o) Number of bytes encoded */
|
|
iLBC_Enc_Inst_t *iLBCenc_inst, /* (i/o) Encoder instance */
|
|
int16_t mode) { /* (i) frame size mode */
|
|
iLBCenc_inst->mode = mode;
|
|
|
|
/* Set all the variables that are dependent on the frame size mode */
|
|
if (mode==30) {
|
|
iLBCenc_inst->blockl = BLOCKL_30MS;
|
|
iLBCenc_inst->nsub = NSUB_30MS;
|
|
iLBCenc_inst->nasub = NASUB_30MS;
|
|
iLBCenc_inst->lpc_n = LPC_N_30MS;
|
|
iLBCenc_inst->no_of_bytes = NO_OF_BYTES_30MS;
|
|
iLBCenc_inst->no_of_words = NO_OF_WORDS_30MS;
|
|
iLBCenc_inst->state_short_len=STATE_SHORT_LEN_30MS;
|
|
}
|
|
else if (mode==20) {
|
|
iLBCenc_inst->blockl = BLOCKL_20MS;
|
|
iLBCenc_inst->nsub = NSUB_20MS;
|
|
iLBCenc_inst->nasub = NASUB_20MS;
|
|
iLBCenc_inst->lpc_n = LPC_N_20MS;
|
|
iLBCenc_inst->no_of_bytes = NO_OF_BYTES_20MS;
|
|
iLBCenc_inst->no_of_words = NO_OF_WORDS_20MS;
|
|
iLBCenc_inst->state_short_len=STATE_SHORT_LEN_20MS;
|
|
}
|
|
else {
|
|
return(-1);
|
|
}
|
|
|
|
/* Clear the buffers and set the previous LSF and LSP to the mean value */
|
|
WebRtcSpl_MemSetW16(iLBCenc_inst->anaMem, 0, LPC_FILTERORDER);
|
|
WEBRTC_SPL_MEMCPY_W16(iLBCenc_inst->lsfold, WebRtcIlbcfix_kLsfMean, LPC_FILTERORDER);
|
|
WEBRTC_SPL_MEMCPY_W16(iLBCenc_inst->lsfdeqold, WebRtcIlbcfix_kLsfMean, LPC_FILTERORDER);
|
|
WebRtcSpl_MemSetW16(iLBCenc_inst->lpc_buffer, 0, LPC_LOOKBACK + BLOCKL_MAX);
|
|
|
|
/* Set the filter state of the HP filter to 0 */
|
|
WebRtcSpl_MemSetW16(iLBCenc_inst->hpimemx, 0, 2);
|
|
WebRtcSpl_MemSetW16(iLBCenc_inst->hpimemy, 0, 4);
|
|
|
|
#ifdef SPLIT_10MS
|
|
/*Zeroing the past samples for 10msec Split*/
|
|
WebRtcSpl_MemSetW16(iLBCenc_inst->past_samples,0,160);
|
|
iLBCenc_inst->section = 0;
|
|
#endif
|
|
|
|
return (iLBCenc_inst->no_of_bytes);
|
|
}
|