1b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/* 2b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. 3b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * 4b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * Use of this source code is governed by a BSD-style license 5b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * that can be found in the LICENSE file in the root of the source 6b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * tree. An additional intellectual property rights grant can be found 7b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * in the file PATENTS. All contributing project authors may 8b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * be found in the AUTHORS file in the root of the source tree. 9b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org */ 10b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 11b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/****************************************************************** 12b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 13b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org iLBC Speech Coder ANSI-C Source Code 14b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 15b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org WebRtcIlbcfix_UnpackBits.c 16b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 17b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org******************************************************************/ 18b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 19b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#include "defines.h" 20b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 21b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/*----------------------------------------------------------------* 22b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * unpacking of bits from bitstream, i.e., vector of bytes 23b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org *---------------------------------------------------------------*/ 24b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 25fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.orgint16_t WebRtcIlbcfix_UnpackBits( /* (o) "Empty" frame indicator */ 26fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org const uint16_t *bitstream, /* (i) The packatized bitstream */ 27b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org iLBC_bits *enc_bits, /* (o) Paramerers from bitstream */ 28fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org int16_t mode /* (i) Codec mode (20 or 30) */ 29b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org ) { 30fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org const uint16_t *bitstreamPtr; 31b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int i, k; 32fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org int16_t *tmpPtr; 33b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 34b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr=bitstream; 35b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 36fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* First int16_t */ 37b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->lsf[0] = (*bitstreamPtr)>>10; /* Bit 0..5 */ 38b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->lsf[1] = ((*bitstreamPtr)>>3)&0x7F; /* Bit 6..12 */ 39b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->lsf[2] = ((*bitstreamPtr)&0x7)<<4; /* Bit 13..15 */ 40b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 41fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* Second int16_t */ 42b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->lsf[2] |= ((*bitstreamPtr)>>12)&0xF; /* Bit 0..3 */ 43b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 44b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (mode==20) { 45b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->startIdx = ((*bitstreamPtr)>>10)&0x3; /* Bit 4..5 */ 46b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->state_first = ((*bitstreamPtr)>>9)&0x1; /* Bit 6 */ 47b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->idxForMax = ((*bitstreamPtr)>>3)&0x3F; /* Bit 7..12 */ 48b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[0] = ((*bitstreamPtr)&0x7)<<4; /* Bit 13..15 */ 49b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 50fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* Third int16_t */ 51b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[0] |= ((*bitstreamPtr)>>12)&0xE; /* Bit 0..2 */ 52b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[0] = ((*bitstreamPtr)>>8)&0x18; /* Bit 3..4 */ 53b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[1] = ((*bitstreamPtr)>>7)&0x8; /* Bit 5 */ 54b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[3] = ((*bitstreamPtr)>>2)&0xFE; /* Bit 6..12 */ 55b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[3] = ((*bitstreamPtr)<<2)&0x10; /* Bit 13 */ 56b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[4] = ((*bitstreamPtr)<<2)&0x8; /* Bit 14 */ 57b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[6] = ((*bitstreamPtr)<<4)&0x10; /* Bit 15 */ 58b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } else { /* mode==30 */ 59b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->lsf[3] = ((*bitstreamPtr)>>6)&0x3F; /* Bit 4..9 */ 60b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->lsf[4] = ((*bitstreamPtr)<<1)&0x7E; /* Bit 10..15 */ 61b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 62fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* Third int16_t */ 63b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->lsf[4] |= ((*bitstreamPtr)>>15)&0x1; /* Bit 0 */ 64b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->lsf[5] = ((*bitstreamPtr)>>8)&0x7F; /* Bit 1..7 */ 65b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->startIdx = ((*bitstreamPtr)>>5)&0x7; /* Bit 8..10 */ 66b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->state_first = ((*bitstreamPtr)>>4)&0x1; /* Bit 11 */ 67b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->idxForMax = ((*bitstreamPtr)<<2)&0x3C; /* Bit 12..15 */ 68b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 69fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 4:th int16_t */ 70b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->idxForMax |= ((*bitstreamPtr)>>14)&0x3; /* Bit 0..1 */ 71b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[0] = ((*bitstreamPtr)>>7)&0x78; /* Bit 2..5 */ 72b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[0] = ((*bitstreamPtr)>>5)&0x10; /* Bit 6 */ 73b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[1] = ((*bitstreamPtr)>>5)&0x8; /* Bit 7 */ 74b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[3] = ((*bitstreamPtr))&0xFC; /* Bit 8..13 */ 75b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[3] = ((*bitstreamPtr)<<3)&0x10; /* Bit 14 */ 76b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[4] = ((*bitstreamPtr)<<3)&0x8; /* Bit 15 */ 77b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 78b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Class 2 bits of ULP */ 79fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 4:th to 6:th int16_t for 20 ms case 80fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org 5:th to 7:th int16_t for 30 ms case */ 81b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 82b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org tmpPtr=enc_bits->idxVec; 83b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (k=0; k<3; k++) { 84b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (i=15; i>=0; i--) { 85b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org (*tmpPtr) = (((*bitstreamPtr)>>i)<<2)&0x4; 86b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Bit 15-i */ 87b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org tmpPtr++; 88b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 89b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 90b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 91b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 92b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (mode==20) { 93fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 7:th int16_t */ 94b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (i=15; i>6; i--) { 95b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org (*tmpPtr) = (((*bitstreamPtr)>>i)<<2)&0x4; 96b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Bit 15-i */ 97b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org tmpPtr++; 98b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 99b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[1] |= ((*bitstreamPtr)>>4)&0x4; /* Bit 9 */ 100b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[3] |= ((*bitstreamPtr)>>2)&0xC; /* Bit 10..11 */ 101b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[4] |= ((*bitstreamPtr)>>1)&0x4; /* Bit 12 */ 102b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[6] |= ((*bitstreamPtr)<<1)&0x8; /* Bit 13 */ 103b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[7] = ((*bitstreamPtr)<<2)&0xC; /* Bit 14..15 */ 104b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 105b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } else { /* mode==30 */ 106fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 8:th int16_t */ 107b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (i=15; i>5; i--) { 108b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org (*tmpPtr) = (((*bitstreamPtr)>>i)<<2)&0x4; 109b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Bit 15-i */ 110b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org tmpPtr++; 111b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 112b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[0] |= ((*bitstreamPtr)>>3)&0x6; /* Bit 10..11 */ 113b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[0] |= ((*bitstreamPtr))&0x8; /* Bit 12 */ 114b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[1] |= ((*bitstreamPtr))&0x4; /* Bit 13 */ 115b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[3] |= ((*bitstreamPtr))&0x2; /* Bit 14 */ 116b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[6] = ((*bitstreamPtr)<<7)&0x80; /* Bit 15 */ 117b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 118fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 9:th int16_t */ 119b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[6] |= ((*bitstreamPtr)>>9)&0x7E; /* Bit 0..5 */ 120b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[9] = ((*bitstreamPtr)>>2)&0xFE; /* Bit 6..12 */ 121b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[12] = ((*bitstreamPtr)<<5)&0xE0; /* Bit 13..15 */ 122b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 123fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 10:th int16_t */ 124b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[12] |= ((*bitstreamPtr)>>11)&0x1E;/* Bit 0..3 */ 125b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[3] |= ((*bitstreamPtr)>>8)&0xC; /* Bit 4..5 */ 126b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[4] |= ((*bitstreamPtr)>>7)&0x6; /* Bit 6..7 */ 127b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[6] = ((*bitstreamPtr)>>3)&0x18; /* Bit 8..9 */ 128b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[7] = ((*bitstreamPtr)>>2)&0xC; /* Bit 10..11 */ 129b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[9] = ((*bitstreamPtr)<<1)&0x10; /* Bit 12 */ 130b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[10] = ((*bitstreamPtr)<<1)&0x8; /* Bit 13 */ 131b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[12] = ((*bitstreamPtr)<<3)&0x10; /* Bit 14 */ 132b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[13] = ((*bitstreamPtr)<<3)&0x8; /* Bit 15 */ 133b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 134b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 135b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Class 3 bits of ULP */ 136fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 8:th to 14:th int16_t for 20 ms case 137fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org 11:th to 17:th int16_t for 30 ms case */ 138b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org tmpPtr=enc_bits->idxVec; 139b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (k=0; k<7; k++) { 140b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (i=14; i>=0; i-=2) { 141b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org (*tmpPtr) |= ((*bitstreamPtr)>>i)&0x3; /* Bit 15-i..14-i*/ 142b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org tmpPtr++; 143b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 144b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 145b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 146b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 147b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (mode==20) { 148fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 15:th int16_t */ 149b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->idxVec[56] |= ((*bitstreamPtr)>>14)&0x3; /* Bit 0..1 */ 150b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[0] |= ((*bitstreamPtr)>>13)&0x1; /* Bit 2 */ 151b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[1] = ((*bitstreamPtr)>>6)&0x7F; /* Bit 3..9 */ 152b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[2] = ((*bitstreamPtr)<<1)&0x7E; /* Bit 10..15 */ 153b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 154fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 16:th int16_t */ 155b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[2] |= ((*bitstreamPtr)>>15)&0x1; /* Bit 0 */ 156b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[0] |= ((*bitstreamPtr)>>12)&0x7; /* Bit 1..3 */ 157b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[1] |= ((*bitstreamPtr)>>10)&0x3; /* Bit 4..5 */ 158b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[2] = ((*bitstreamPtr)>>7)&0x7; /* Bit 6..8 */ 159b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[3] |= ((*bitstreamPtr)>>6)&0x1; /* Bit 9 */ 160b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[4] = ((*bitstreamPtr)<<1)&0x7E; /* Bit 10..15 */ 161b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 162fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 17:th int16_t */ 163b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[4] |= ((*bitstreamPtr)>>15)&0x1; /* Bit 0 */ 164b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[5] = ((*bitstreamPtr)>>8)&0x7F; /* Bit 1..7 */ 165b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[6] = ((*bitstreamPtr))&0xFF; /* Bit 8..15 */ 166b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 167fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 18:th int16_t */ 168b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[7] = (*bitstreamPtr)>>8; /* Bit 0..7 */ 169b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[8] = (*bitstreamPtr)&0xFF; /* Bit 8..15 */ 170b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 171fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 19:th int16_t */ 172b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[3] |= ((*bitstreamPtr)>>14)&0x3; /* Bit 0..1 */ 173b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[4] |= ((*bitstreamPtr)>>12)&0x3; /* Bit 2..3 */ 174b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[5] = ((*bitstreamPtr)>>9)&0x7; /* Bit 4..6 */ 175b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[6] |= ((*bitstreamPtr)>>6)&0x7; /* Bit 7..9 */ 176b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[7] |= ((*bitstreamPtr)>>4)&0x3; /* Bit 10..11 */ 177b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[8] = ((*bitstreamPtr)>>1)&0x7; /* Bit 12..14 */ 178b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } else { /* mode==30 */ 179fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 18:th int16_t */ 180b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->idxVec[56] |= ((*bitstreamPtr)>>14)&0x3; /* Bit 0..1 */ 181b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->idxVec[57] |= ((*bitstreamPtr)>>12)&0x3; /* Bit 2..3 */ 182b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[0] |= ((*bitstreamPtr)>>11)&1; /* Bit 4 */ 183b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[1] = ((*bitstreamPtr)>>4)&0x7F; /* Bit 5..11 */ 184b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[2] = ((*bitstreamPtr)<<3)&0x78; /* Bit 12..15 */ 185b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 186fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 19:th int16_t */ 187b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[2] |= ((*bitstreamPtr)>>13)&0x7; /* Bit 0..2 */ 188b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[0] |= ((*bitstreamPtr)>>10)&0x7; /* Bit 3..5 */ 189b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[1] |= ((*bitstreamPtr)>>8)&0x3; /* Bit 6..7 */ 190b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[2] = ((*bitstreamPtr)>>5)&0x7; /* Bit 8..10 */ 191b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[3] |= ((*bitstreamPtr)>>4)&0x1; /* Bit 11 */ 192b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[4] = ((*bitstreamPtr)<<3)&0x78; /* Bit 12..15 */ 193b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 194fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 20:th int16_t */ 195b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[4] |= ((*bitstreamPtr)>>13)&0x7; /* Bit 0..2 */ 196b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[5] = ((*bitstreamPtr)>>6)&0x7F; /* Bit 3..9 */ 197b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[6] |= ((*bitstreamPtr)>>5)&0x1; /* Bit 10 */ 198b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[7] = ((*bitstreamPtr)<<3)&0xF8; /* Bit 11..15 */ 199b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 200fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 21:st int16_t */ 201b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[7] |= ((*bitstreamPtr)>>13)&0x7; /* Bit 0..2 */ 202b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[8] = ((*bitstreamPtr)>>5)&0xFF; /* Bit 3..10 */ 203b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[9] |= ((*bitstreamPtr)>>4)&0x1; /* Bit 11 */ 204b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[10] = ((*bitstreamPtr)<<4)&0xF0; /* Bit 12..15 */ 205b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 206fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 22:nd int16_t */ 207b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[10] |= ((*bitstreamPtr)>>12)&0xF; /* Bit 0..3 */ 208b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[11] = ((*bitstreamPtr)>>4)&0xFF; /* Bit 4..11 */ 209b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[12] |= ((*bitstreamPtr)>>3)&0x1; /* Bit 12 */ 210b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[13] = ((*bitstreamPtr)<<5)&0xE0; /* Bit 13..15 */ 211b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 212fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 23:rd int16_t */ 213b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[13] |= ((*bitstreamPtr)>>11)&0x1F;/* Bit 0..4 */ 214b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->cb_index[14] = ((*bitstreamPtr)>>3)&0xFF; /* Bit 5..12 */ 215b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[3] |= ((*bitstreamPtr)>>1)&0x3; /* Bit 13..14 */ 216b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[4] |= ((*bitstreamPtr)&0x1); /* Bit 15 */ 217b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 218fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 24:rd int16_t */ 219b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[5] = ((*bitstreamPtr)>>13)&0x7; /* Bit 0..2 */ 220b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[6] |= ((*bitstreamPtr)>>10)&0x7; /* Bit 3..5 */ 221b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[7] |= ((*bitstreamPtr)>>8)&0x3; /* Bit 6..7 */ 222b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[8] = ((*bitstreamPtr)>>5)&0x7; /* Bit 8..10 */ 223b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[9] |= ((*bitstreamPtr)>>1)&0xF; /* Bit 11..14 */ 224b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[10] |= ((*bitstreamPtr)<<2)&0x4; /* Bit 15 */ 225b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org bitstreamPtr++; 226fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org /* 25:rd int16_t */ 227b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[10] |= ((*bitstreamPtr)>>14)&0x3; /* Bit 0..1 */ 228b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[11] = ((*bitstreamPtr)>>11)&0x7; /* Bit 2..4 */ 229b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[12] |= ((*bitstreamPtr)>>7)&0xF; /* Bit 5..8 */ 230b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[13] |= ((*bitstreamPtr)>>4)&0x7; /* Bit 9..11 */ 231b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org enc_bits->gain_index[14] = ((*bitstreamPtr)>>1)&0x7; /* Bit 12..14 */ 232b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 233b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Last bit should be zero, otherwise it's an "empty" frame */ 234b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (((*bitstreamPtr)&0x1) == 1) { 235b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org return(1); 236b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } else { 237b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org return(0); 238b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 239b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org} 240