1b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/* 2b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * SpanDSP - a series of DSP components for telephony 3b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * 4b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * g722_decode.c - The ITU G.722 codec, decode part. 5b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * 6b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * Written by Steve Underwood <steveu@coppice.org> 7b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * 8b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * Copyright (C) 2005 Steve Underwood 9b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * 10b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * Despite my general liking of the GPL, I place my own contributions 11b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * to this code in the public domain for the benefit of all mankind - 12b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * even the slimy ones who might try to proprietize my work and use it 13b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * to my detriment. 14b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * 15b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * Based in part on a single channel G.722 codec which is: 16b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * 17b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * Copyright (c) CMU 1993 18b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * Computer Science, Speech Group 19b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * Chengxiang Lu and Alex Hauptmann 20b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * 21b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * $Id: g722_decode.c,v 1.15 2006/07/07 16:37:49 steveu Exp $ 22b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * 23b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * Modifications for WebRtc, 2011/04/28, by tlegrand: 24b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * -Removed usage of inttypes.h and tgmath.h 25b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * -Changed to use WebRtc types 26b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * -Changed __inline__ to __inline 27b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org * -Added saturation check on output 28b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org */ 29b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 30b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/*! \file */ 31b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 32b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 33b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#ifdef HAVE_CONFIG_H 34b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#include <config.h> 35b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#endif 36b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 3769370488385c14d73e6ae8a3d5001c42884f9275henrike@webrtc.org#include <memory.h> 38a11402cdbf99a12d58421d5b446982e8d30c40caandresp@webrtc.org#include <stdio.h> 39b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#include <stdlib.h> 40b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 41b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#include "g722_enc_dec.h" 42a11402cdbf99a12d58421d5b446982e8d30c40caandresp@webrtc.org#include "webrtc/typedefs.h" 43b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 44b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#if !defined(FALSE) 45b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#define FALSE 0 46b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#endif 47b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#if !defined(TRUE) 48b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#define TRUE (!FALSE) 49b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org#endif 50b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 51fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.orgstatic __inline int16_t saturate(int32_t amp) 52b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org{ 53fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org int16_t amp16; 54b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 55b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Hopefully this is optimised for the common case - not clipping */ 56fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org amp16 = (int16_t) amp; 57b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (amp == amp16) 58b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org return amp16; 59b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (amp > WEBRTC_INT16_MAX) 60b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org return WEBRTC_INT16_MAX; 61b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org return WEBRTC_INT16_MIN; 62b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org} 63b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/*- End of function --------------------------------------------------------*/ 64b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 65b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.orgstatic void block4(g722_decode_state_t *s, int band, int d); 66b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 67b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.orgstatic void block4(g722_decode_state_t *s, int band, int d) 68b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org{ 69b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int wd1; 70b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int wd2; 71b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int wd3; 72b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int i; 73b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 74b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 4, RECONS */ 75b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].d[0] = d; 76b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].r[0] = saturate(s->band[band].s + d); 77b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 78b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 4, PARREC */ 79b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].p[0] = saturate(s->band[band].sz + d); 80b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 81b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 4, UPPOL2 */ 82b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (i = 0; i < 3; i++) 83b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].sg[i] = s->band[band].p[i] >> 15; 84b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = saturate(s->band[band].a[1] << 2); 85b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 86b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = (s->band[band].sg[0] == s->band[band].sg[1]) ? -wd1 : wd1; 87b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (wd2 > 32767) 88b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = 32767; 89b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd3 = (s->band[band].sg[0] == s->band[band].sg[2]) ? 128 : -128; 90b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd3 += (wd2 >> 7); 91b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd3 += (s->band[band].a[2]*32512) >> 15; 92b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (wd3 > 12288) 93b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd3 = 12288; 94b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org else if (wd3 < -12288) 95b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd3 = -12288; 96b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].ap[2] = wd3; 97b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 98b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 4, UPPOL1 */ 99b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].sg[0] = s->band[band].p[0] >> 15; 100b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].sg[1] = s->band[band].p[1] >> 15; 101b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = (s->band[band].sg[0] == s->band[band].sg[1]) ? 192 : -192; 102b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = (s->band[band].a[1]*32640) >> 15; 103b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 104b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].ap[1] = saturate(wd1 + wd2); 105b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd3 = saturate(15360 - s->band[band].ap[2]); 106b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (s->band[band].ap[1] > wd3) 107b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].ap[1] = wd3; 108b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org else if (s->band[band].ap[1] < -wd3) 109b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].ap[1] = -wd3; 110b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 111b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 4, UPZERO */ 112b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = (d == 0) ? 0 : 128; 113b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].sg[0] = d >> 15; 114b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (i = 1; i < 7; i++) 115b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 116b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].sg[i] = s->band[band].d[i] >> 15; 117b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = (s->band[band].sg[i] == s->band[band].sg[0]) ? wd1 : -wd1; 118b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd3 = (s->band[band].b[i]*32640) >> 15; 119b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].bp[i] = saturate(wd2 + wd3); 120b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 121b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 122b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 4, DELAYA */ 123b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (i = 6; i > 0; i--) 124b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 125b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].d[i] = s->band[band].d[i - 1]; 126b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].b[i] = s->band[band].bp[i]; 127b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 128b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 129b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (i = 2; i > 0; i--) 130b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 131b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].r[i] = s->band[band].r[i - 1]; 132b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].p[i] = s->band[band].p[i - 1]; 133b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].a[i] = s->band[band].ap[i]; 134b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 135b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 136b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 4, FILTEP */ 137b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = saturate(s->band[band].r[1] + s->band[band].r[1]); 138b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = (s->band[band].a[1]*wd1) >> 15; 139b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = saturate(s->band[band].r[2] + s->band[band].r[2]); 140b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = (s->band[band].a[2]*wd2) >> 15; 141b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].sp = saturate(wd1 + wd2); 142b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 143b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 4, FILTEZ */ 144b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].sz = 0; 145b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (i = 6; i > 0; i--) 146b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 147b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = saturate(s->band[band].d[i] + s->band[band].d[i]); 148b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].sz += (s->band[band].b[i]*wd1) >> 15; 149b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 150b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].sz = saturate(s->band[band].sz); 151b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 152b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 4, PREDIC */ 153b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[band].s = saturate(s->band[band].sp + s->band[band].sz); 154b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org} 155b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/*- End of function --------------------------------------------------------*/ 156b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 157b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.orgg722_decode_state_t *WebRtc_g722_decode_init(g722_decode_state_t *s, 158b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int rate, 159b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int options) 160b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org{ 161b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (s == NULL) 162b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 163b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if ((s = (g722_decode_state_t *) malloc(sizeof(*s))) == NULL) 164b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org return NULL; 165b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 166b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org memset(s, 0, sizeof(*s)); 167b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (rate == 48000) 168b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->bits_per_sample = 6; 169b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org else if (rate == 56000) 170b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->bits_per_sample = 7; 171b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org else 172b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->bits_per_sample = 8; 173b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if ((options & G722_SAMPLE_RATE_8000)) 174b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->eight_k = TRUE; 175b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if ((options & G722_PACKED) && s->bits_per_sample != 8) 176b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->packed = TRUE; 177b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org else 178b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->packed = FALSE; 179b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[0].det = 32; 180b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[1].det = 8; 181b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org return s; 182b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org} 183b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/*- End of function --------------------------------------------------------*/ 184b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 185b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.orgint WebRtc_g722_decode_release(g722_decode_state_t *s) 186b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org{ 187b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org free(s); 188b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org return 0; 189b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org} 190b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/*- End of function --------------------------------------------------------*/ 191b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 192fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.orgint WebRtc_g722_decode(g722_decode_state_t *s, int16_t amp[], 193fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org const uint8_t g722_data[], int len) 194b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org{ 195b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org static const int wl[8] = {-60, -30, 58, 172, 334, 538, 1198, 3042 }; 196b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org static const int rl42[16] = {0, 7, 6, 5, 4, 3, 2, 1, 197b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 7, 6, 5, 4, 3, 2, 1, 0 }; 198b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org static const int ilb[32] = 199b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 200b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 2048, 2093, 2139, 2186, 2233, 2282, 2332, 201b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 2383, 2435, 2489, 2543, 2599, 2656, 2714, 202b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 2774, 2834, 2896, 2960, 3025, 3091, 3158, 203b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 3228, 3298, 3371, 3444, 3520, 3597, 3676, 204b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 3756, 3838, 3922, 4008 205b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org }; 206b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org static const int wh[3] = {0, -214, 798}; 207b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org static const int rh2[4] = {2, 1, 2, 1}; 208b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org static const int qm2[4] = {-7408, -1616, 7408, 1616}; 209b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org static const int qm4[16] = 210b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 211b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 0, -20456, -12896, -8968, 212b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -6288, -4240, -2584, -1200, 213b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 20456, 12896, 8968, 6288, 214b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 4240, 2584, 1200, 0 215b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org }; 216b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org static const int qm5[32] = 217b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 218b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -280, -280, -23352, -17560, 219b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -14120, -11664, -9752, -8184, 220b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -6864, -5712, -4696, -3784, 221b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -2960, -2208, -1520, -880, 222b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 23352, 17560, 14120, 11664, 223b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 9752, 8184, 6864, 5712, 224b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 4696, 3784, 2960, 2208, 225b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 1520, 880, 280, -280 226b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org }; 227b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org static const int qm6[64] = 228b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 229b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -136, -136, -136, -136, 230b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -24808, -21904, -19008, -16704, 231b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -14984, -13512, -12280, -11192, 232b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -10232, -9360, -8576, -7856, 233b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -7192, -6576, -6000, -5456, 234b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -4944, -4464, -4008, -3576, 235b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -3168, -2776, -2400, -2032, 236b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org -1688, -1360, -1040, -728, 237b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 24808, 21904, 19008, 16704, 238b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 14984, 13512, 12280, 11192, 239b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 10232, 9360, 8576, 7856, 240b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 7192, 6576, 6000, 5456, 241b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 4944, 4464, 4008, 3576, 242b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 3168, 2776, 2400, 2032, 243b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 1688, 1360, 1040, 728, 244b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 432, 136, -432, -136 245b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org }; 246b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org static const int qmf_coeffs[12] = 247b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 248b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 3, -11, 12, 32, -210, 951, 3876, -805, 362, -156, 53, -11, 249b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org }; 250b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 251b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int dlowt; 252b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int rlow; 253b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int ihigh; 254b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int dhigh; 255b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int rhigh; 256b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int xout1; 257b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int xout2; 258b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int wd1; 259b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int wd2; 260b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int wd3; 261b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int code; 262b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int outlen; 263b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int i; 264b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org int j; 265b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 266b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org outlen = 0; 267b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org rhigh = 0; 268b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (j = 0; j < len; ) 269b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 270b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (s->packed) 271b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 272b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Unpack the code bits */ 273b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (s->in_bits < s->bits_per_sample) 274b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 275b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->in_buffer |= (g722_data[j++] << s->in_bits); 276b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->in_bits += 8; 277b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 278b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org code = s->in_buffer & ((1 << s->bits_per_sample) - 1); 279b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->in_buffer >>= s->bits_per_sample; 280b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->in_bits -= s->bits_per_sample; 281b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 282b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org else 283b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 284b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org code = g722_data[j++]; 285b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 286b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 287b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org switch (s->bits_per_sample) 288b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 289b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org default: 290b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org case 8: 291b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = code & 0x3F; 292b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org ihigh = (code >> 6) & 0x03; 293b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = qm6[wd1]; 294b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 >>= 2; 295b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org break; 296b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org case 7: 297b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = code & 0x1F; 298b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org ihigh = (code >> 5) & 0x03; 299b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = qm5[wd1]; 300b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 >>= 1; 301b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org break; 302b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org case 6: 303b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = code & 0x0F; 304b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org ihigh = (code >> 4) & 0x03; 305b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = qm4[wd1]; 306b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org break; 307b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 308b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 5L, LOW BAND INVQBL */ 309b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = (s->band[0].det*wd2) >> 15; 310b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 5L, RECONS */ 311b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org rlow = s->band[0].s + wd2; 312b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 6L, LIMIT */ 313b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (rlow > 16383) 314b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org rlow = 16383; 315b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org else if (rlow < -16384) 316b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org rlow = -16384; 317b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 318b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 2L, INVQAL */ 319b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = qm4[wd1]; 320b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org dlowt = (s->band[0].det*wd2) >> 15; 321b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 322b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 3L, LOGSCL */ 323b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = rl42[wd1]; 324b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = (s->band[0].nb*127) >> 7; 325b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 += wl[wd2]; 326b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (wd1 < 0) 327b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = 0; 328b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org else if (wd1 > 18432) 329b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = 18432; 330b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[0].nb = wd1; 331b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 332b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 3L, SCALEL */ 333b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = (s->band[0].nb >> 6) & 31; 334b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = 8 - (s->band[0].nb >> 11); 335b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd3 = (wd2 < 0) ? (ilb[wd1] << -wd2) : (ilb[wd1] >> wd2); 336b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[0].det = wd3 << 2; 337b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 338b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org block4(s, 0, dlowt); 339b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 340b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (!s->eight_k) 341b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 342b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 2H, INVQAH */ 343b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = qm2[ihigh]; 344b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org dhigh = (s->band[1].det*wd2) >> 15; 345b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 5H, RECONS */ 346b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org rhigh = dhigh + s->band[1].s; 347b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 6H, LIMIT */ 348b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (rhigh > 16383) 349b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org rhigh = 16383; 350b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org else if (rhigh < -16384) 351b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org rhigh = -16384; 352b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 353b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 2H, INVQAH */ 354b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = rh2[ihigh]; 355b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = (s->band[1].nb*127) >> 7; 356b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 += wh[wd2]; 357b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (wd1 < 0) 358b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = 0; 359b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org else if (wd1 > 22528) 360b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = 22528; 361b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[1].nb = wd1; 362b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 363b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Block 3H, SCALEH */ 364b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd1 = (s->band[1].nb >> 6) & 31; 365b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd2 = 10 - (s->band[1].nb >> 11); 366b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org wd3 = (wd2 < 0) ? (ilb[wd1] << -wd2) : (ilb[wd1] >> wd2); 367b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->band[1].det = wd3 << 2; 368b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 369b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org block4(s, 1, dhigh); 370b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 371b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 372b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (s->itu_test_mode) 373b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 374fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org amp[outlen++] = (int16_t) (rlow << 1); 375fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org amp[outlen++] = (int16_t) (rhigh << 1); 376b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 377b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org else 378b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 379b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org if (s->eight_k) 380b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 381fbda0fcf2f9e82c82bcaac138f44d4e5144f6e0dpbos@webrtc.org amp[outlen++] = (int16_t) (rlow << 1); 382b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 383b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org else 384b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 385b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* Apply the receive QMF */ 386b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (i = 0; i < 22; i++) 387b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->x[i] = s->x[i + 2]; 388b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->x[22] = rlow + rhigh; 389b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org s->x[23] = rlow - rhigh; 390b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org 391b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org xout1 = 0; 392b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org xout2 = 0; 393b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org for (i = 0; i < 12; i++) 394b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org { 395b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org xout2 += s->x[2*i]*qmf_coeffs[i]; 396b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org xout1 += s->x[2*i + 1]*qmf_coeffs[11 - i]; 397b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 398b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* We shift by 12 to allow for the QMF filters (DC gain = 4096), less 1 399b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org to allow for the 15 bit input to the G.722 algorithm. */ 400b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org /* WebRtc, tlegrand: added saturation */ 401b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org amp[outlen++] = saturate(xout1 >> 11); 402b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org amp[outlen++] = saturate(xout2 >> 11); 403b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 404b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 405b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org } 406b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org return outlen; 407b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org} 408b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/*- End of function --------------------------------------------------------*/ 409b015cbede88899f67a53fbbe581b02ce8e32794andrew@webrtc.org/*- End of file ------------------------------------------------------------*/ 410