| /* |
| * 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. |
| */ |
| |
| /* |
| * settings.h |
| * |
| * Declaration of #defines used in the iSAC codec |
| * |
| */ |
| |
| #ifndef MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_SETTINGS_H_ |
| #define MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_SETTINGS_H_ |
| |
| /* sampling frequency (Hz) */ |
| #define FS 16000 |
| /* 1.5 times Sampling frequency */ |
| #define FS_1_HALF (uint32_t)24000 |
| /* Three times Sampling frequency */ |
| #define FS3 (uint32_t)48000 |
| /* Eight times Sampling frequency */ |
| #define FS8 (uint32_t)128000 |
| |
| /* number of samples per frame (either 480 (30ms) or 960 (60ms)) */ |
| #define INITIAL_FRAMESAMPLES 960 |
| |
| /* miliseconds */ |
| #define FRAMESIZE 30 |
| /* number of samples per frame processed in the encoder (30ms) */ |
| #define FRAMESAMPLES 480 /* ((FRAMESIZE*FS)/1000) */ |
| #define FRAMESAMPLES_HALF 240 |
| /* max number of samples per frame (= 60 ms frame) */ |
| #define MAX_FRAMESAMPLES 960 |
| /* number of samples per 10ms frame */ |
| #define FRAMESAMPLES_10ms 160 /* ((10*FS)/1000) */ |
| /* Number of samples per 1 ms */ |
| #define SAMPLES_PER_MSEC 16 |
| /* number of subframes */ |
| #define SUBFRAMES 6 |
| /* length of a subframe */ |
| #define UPDATE 80 |
| /* length of half a subframe (low/high band) */ |
| #define HALF_SUBFRAMELEN 40 /* (UPDATE/2) */ |
| /* samples of look ahead (in a half-band, so actually half the samples of look |
| * ahead @ FS) */ |
| #define QLOOKAHEAD 24 /* 3 ms */ |
| |
| /* order of AR model in spectral entropy coder */ |
| #define AR_ORDER 6 |
| #define MAX_ORDER 13 |
| #define LEVINSON_MAX_ORDER 12 |
| |
| /* window length (masking analysis) */ |
| #define WINLEN 256 |
| /* order of low-band pole filter used to approximate masking curve */ |
| #define ORDERLO 12 |
| /* order of hi-band pole filter used to approximate masking curve */ |
| #define ORDERHI 6 |
| |
| #define KLT_NUM_AVG_GAIN 0 |
| #define KLT_NUM_AVG_SHAPE 0 |
| #define KLT_NUM_MODELS 3 |
| #define LPC_SHAPE_ORDER 18 /* (ORDERLO + ORDERHI) */ |
| |
| #define KLT_ORDER_GAIN 12 /* (2 * SUBFRAMES) */ |
| #define KLT_ORDER_SHAPE 108 /* (LPC_SHAPE_ORDER * SUBFRAMES) */ |
| |
| /* order for post_filter_bank */ |
| #define POSTQORDER 3 |
| /* order for pre-filterbank */ |
| #define QORDER 3 |
| /* for decimator */ |
| #define ALLPASSSECTIONS 2 |
| /* The number of composite all-pass filter factors */ |
| #define NUMBEROFCOMPOSITEAPSECTIONS 4 |
| |
| /* The number of all-pass filter factors in an upper or lower channel*/ |
| #define NUMBEROFCHANNELAPSECTIONS 2 |
| |
| #define DPMIN_Q10 -10240 /* -10.00 in Q10 */ |
| #define DPMAX_Q10 10240 /* 10.00 in Q10 */ |
| #define MINBITS_Q10 10240 /* 10.0 in Q10 */ |
| |
| /* array size for byte stream in number of Word16. */ |
| #define STREAM_MAXW16 \ |
| 300 /* The old maximum size still needed for the decoding */ |
| #define STREAM_MAXW16_30MS \ |
| 100 /* 100 Word16 = 200 bytes = 53.4 kbit/s @ 30 ms.framelength */ |
| #define STREAM_MAXW16_60MS \ |
| 200 /* 200 Word16 = 400 bytes = 53.4 kbit/s @ 60 ms.framelength */ |
| /* This is used only at the decoder bit-stream struct. |
| * - The encoder and decoder bitstream containers are of different size because |
| * old iSAC limited the encoded bitstream to 600 bytes. But newer versions |
| * restrict to shorter bitstream. |
| * - We add 10 bytes of guards to the internal bitstream container. The reason |
| * is that entropy decoder might read few bytes (3 according to our |
| * observations) more than the actual size of the bitstream. To avoid reading |
| * outside memory, in rare occasion of full-size bitstream we add 10 bytes |
| * of guard. */ |
| #define INTERNAL_STREAM_SIZE_W16 (STREAM_MAXW16 + 5) |
| |
| /* storage size for bit counts */ |
| //#define BIT_COUNTER_SIZE 30 |
| /* maximum order of any AR model or filter */ |
| #define MAX_AR_MODEL_ORDER 12 |
| |
| /* Maximum number of iterations allowed to limit payload size */ |
| #define MAX_PAYLOAD_LIMIT_ITERATION 1 |
| |
| /* Bandwidth estimator */ |
| |
| #define MIN_ISAC_BW 10000 /* Minimum bandwidth in bits per sec */ |
| #define MAX_ISAC_BW 32000 /* Maxmum bandwidth in bits per sec */ |
| #define MIN_ISAC_MD 5 /* Minimum Max Delay in ?? */ |
| #define MAX_ISAC_MD 25 /* Maxmum Max Delay in ?? */ |
| #define DELAY_CORRECTION_MAX 717 |
| #define DELAY_CORRECTION_MED 819 |
| #define Thld_30_60 18000 |
| #define Thld_60_30 27000 |
| |
| /* assumed header size; we don't know the exact number (header compression may |
| * be used) */ |
| #define HEADER_SIZE 35 /* bytes */ |
| #define INIT_FRAME_LEN 60 |
| #define INIT_BN_EST 20000 |
| #define INIT_BN_EST_Q7 2560000 /* 20 kbps in Q7 */ |
| #define INIT_REC_BN_EST_Q5 789312 /* INIT_BN_EST + INIT_HDR_RATE in Q5 */ |
| |
| /* 8738 in Q18 is ~ 1/30 */ |
| /* #define INIT_HDR_RATE (((HEADER_SIZE * 8 * 1000) * 8738) >> NUM_BITS_TO_SHIFT |
| * (INIT_FRAME_LEN)) */ |
| #define INIT_HDR_RATE 4666 |
| /* number of packets in a row for a high rate burst */ |
| #define BURST_LEN 3 |
| /* ms, max time between two full bursts */ |
| #define BURST_INTERVAL 800 |
| /* number of packets in a row for initial high rate burst */ |
| #define INIT_BURST_LEN 5 |
| /* bits/s, rate for the first BURST_LEN packets */ |
| #define INIT_RATE 10240000 /* INIT_BN_EST in Q9 */ |
| |
| /* For pitch analysis */ |
| #define PITCH_FRAME_LEN 240 /* (FRAMESAMPLES/2) 30 ms */ |
| #define PITCH_MAX_LAG 140 /* 57 Hz */ |
| #define PITCH_MIN_LAG 20 /* 400 Hz */ |
| #define PITCH_MIN_LAG_Q8 5120 /* 256 * PITCH_MIN_LAG */ |
| #define OFFSET_Q8 768 /* 256 * 3 */ |
| |
| #define PITCH_MAX_GAIN_Q12 1843 /* 0.45 */ |
| #define PITCH_LAG_SPAN2 65 /* (PITCH_MAX_LAG/2-PITCH_MIN_LAG/2+5) */ |
| #define PITCH_CORR_LEN2 60 /* 15 ms */ |
| #define PITCH_CORR_STEP2 60 /* (PITCH_FRAME_LEN/4) */ |
| #define PITCH_SUBFRAMES 4 |
| #define PITCH_SUBFRAME_LEN 60 /* (PITCH_FRAME_LEN/PITCH_SUBFRAMES) */ |
| |
| /* For pitch filter */ |
| #define PITCH_BUFFSIZE \ |
| 190 /* (PITCH_MAX_LAG + 50) Extra 50 for fraction and LP filters */ |
| #define PITCH_INTBUFFSIZE 430 /* (PITCH_FRAME_LEN+PITCH_BUFFSIZE) */ |
| #define PITCH_FRACS 8 |
| #define PITCH_FRACORDER 9 |
| #define PITCH_DAMPORDER 5 |
| |
| /* Order of high pass filter */ |
| #define HPORDER 2 |
| |
| /* PLC */ |
| #define DECAY_RATE \ |
| 10 /* Q15, 20% of decay every lost frame apllied linearly sample by sample*/ |
| #define PLC_WAS_USED 1 |
| #define PLC_NOT_USED 3 |
| #define RECOVERY_OVERLAP 80 |
| #define RESAMP_RES 256 |
| #define RESAMP_RES_BIT 8 |
| |
| /* Define Error codes */ |
| /* 6000 General */ |
| #define ISAC_MEMORY_ALLOCATION_FAILED 6010 |
| #define ISAC_MODE_MISMATCH 6020 |
| #define ISAC_DISALLOWED_BOTTLENECK 6030 |
| #define ISAC_DISALLOWED_FRAME_LENGTH 6040 |
| /* 6200 Bandwidth estimator */ |
| #define ISAC_RANGE_ERROR_BW_ESTIMATOR 6240 |
| /* 6400 Encoder */ |
| #define ISAC_ENCODER_NOT_INITIATED 6410 |
| #define ISAC_DISALLOWED_CODING_MODE 6420 |
| #define ISAC_DISALLOWED_FRAME_MODE_ENCODER 6430 |
| #define ISAC_DISALLOWED_BITSTREAM_LENGTH 6440 |
| #define ISAC_PAYLOAD_LARGER_THAN_LIMIT 6450 |
| /* 6600 Decoder */ |
| #define ISAC_DECODER_NOT_INITIATED 6610 |
| #define ISAC_EMPTY_PACKET 6620 |
| #define ISAC_PACKET_TOO_SHORT 6625 |
| #define ISAC_DISALLOWED_FRAME_MODE_DECODER 6630 |
| #define ISAC_RANGE_ERROR_DECODE_FRAME_LENGTH 6640 |
| #define ISAC_RANGE_ERROR_DECODE_BANDWIDTH 6650 |
| #define ISAC_RANGE_ERROR_DECODE_PITCH_GAIN 6660 |
| #define ISAC_RANGE_ERROR_DECODE_PITCH_LAG 6670 |
| #define ISAC_RANGE_ERROR_DECODE_LPC 6680 |
| #define ISAC_RANGE_ERROR_DECODE_SPECTRUM 6690 |
| #define ISAC_LENGTH_MISMATCH 6730 |
| /* 6800 Call setup formats */ |
| #define ISAC_INCOMPATIBLE_FORMATS 6810 |
| |
| #endif /* MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_SETTINGS_H_ */ |
