diff --git a/webrtc/modules/audio_coding/codecs/isac/fix/test/kenny.cc b/webrtc/modules/audio_coding/codecs/isac/fix/test/kenny.cc index 528f0fad91..065bf09efd 100644 --- a/webrtc/modules/audio_coding/codecs/isac/fix/test/kenny.cc +++ b/webrtc/modules/audio_coding/codecs/isac/fix/test/kenny.cc @@ -163,7 +163,7 @@ int main(int argc, char* argv[]) printf("iSAC version %s \n\n", version_number); printf("Usage:\n\n"); - printf("./kenny.exe [-F num][-I] bottleneck_value infile outfile \n\n"); + printf("%s [-F num][-I] bottleneck_value infile outfile \n\n", argv[0]); printf("with:\n"); printf("[-I] :if -I option is specified, the coder will use\n"); printf(" an instantaneous Bottleneck value. If not, it\n"); @@ -222,7 +222,7 @@ int main(int argc, char* argv[]) printf("infile : Normal speech input file\n\n"); printf("outfile : Speech output file\n\n"); printf("Example usage : \n\n"); - printf("./kenny.exe -I bottleneck.txt speechIn.pcm speechOut.pcm\n\n"); + printf("%s -I bottleneck.txt speechIn.pcm speechOut.pcm\n\n", argv[0]); exit(0); } diff --git a/webrtc/modules/audio_coding/codecs/isac/fix/test/test_iSACfixfloat.c b/webrtc/modules/audio_coding/codecs/isac/fix/test/test_iSACfixfloat.c deleted file mode 100644 index ac0fa350c9..0000000000 --- a/webrtc/modules/audio_coding/codecs/isac/fix/test/test_iSACfixfloat.c +++ /dev/null @@ -1,629 +0,0 @@ -/* - * 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. - */ - -/* - * test_iSACfixfloat.c - * - * Test compatibility and quality between floating- and fixed-point code - * */ - -#include -#include -#include - -/* include API */ -#include "isac.h" -#include "isacfix.h" -#include "webrtc/base/format_macros.h" - -/* max number of samples per frame (= 60 ms frame) */ -#define MAX_FRAMESAMPLES 960 -/* number of samples per 10ms frame */ -#define FRAMESAMPLES_10ms 160 -/* sampling frequency (Hz) */ -#define FS 16000 - -/* Runtime statistics */ -#include -#define CLOCKS_PER_SEC 1000 - -// FILE *histfile, *ratefile; - -/* function for reading audio data from PCM file */ -int readframe(int16_t* data, FILE* inp, int length) { - short k, rlen, status = 0; - - rlen = fread(data, sizeof(int16_t), length, inp); - if (rlen < length) { - for (k = rlen; k < length; k++) - data[k] = 0; - status = 1; - } - - return status; -} - -typedef struct { - uint32_t send_time; /* samples */ - uint32_t arrival_time; /* samples */ - uint32_t sample_count; /* samples */ - uint16_t rtp_number; -} BottleNeckModel; - -void get_arrival_time(int current_framesamples, /* samples */ - size_t packet_size, /* bytes */ - int bottleneck, /* excluding headers; bits/s */ - BottleNeckModel* BN_data) { - const int HeaderSize = 35; - int HeaderRate; - - HeaderRate = HeaderSize * 8 * FS / current_framesamples; /* bits/s */ - - /* everything in samples */ - BN_data->sample_count = BN_data->sample_count + current_framesamples; - - BN_data->arrival_time += (uint32_t) - (((packet_size + HeaderSize) * 8 * FS) / (bottleneck + HeaderRate)); - BN_data->send_time += current_framesamples; - - if (BN_data->arrival_time < BN_data->sample_count) - BN_data->arrival_time = BN_data->sample_count; - - BN_data->rtp_number++; -} - -int main(int argc, char* argv[]) { - char inname[50], outname[50], bottleneck_file[50], bitfilename[60], - bitending[10] = "_bits.pcm"; - FILE* inp, *outp, *f_bn, *bitsp; - int framecnt, endfile; - - int i, j, errtype, plc = 0; - int16_t CodingMode; - int16_t bottleneck; - - int framesize = 30; /* ms */ - // int framesize = 60; /* To invoke cisco complexity case at frame 2252 */ - - int cur_framesmpls, err; - - /* Runtime statistics */ - double starttime; - double runtime; - double length_file; - - size_t stream_len = 0; - int declen; - - int16_t shortdata[FRAMESAMPLES_10ms]; - int16_t decoded[MAX_FRAMESAMPLES]; - uint16_t streamdata[600]; - int16_t speechType[1]; - - // int16_t* iSACstruct; - - char version_number[20]; - int mode = -1, tmp, nbTest = 0; /*,sss;*/ - -#if !defined(NDEBUG) - FILE* fy; - double kbps; - size_t totalbits = 0; - int totalsmpls = 0; -#endif - - /* only one structure used for ISAC encoder */ - ISAC_MainStruct* ISAC_main_inst; - ISACFIX_MainStruct* ISACFIX_main_inst; - - BottleNeckModel BN_data; - f_bn = NULL; - -#if !defined(NDEBUG) - fy = fopen("bit_rate.dat", "w"); - fclose(fy); - fy = fopen("bytes_frames.dat", "w"); - fclose(fy); -#endif - - // histfile = fopen("histo.dat", "ab"); - // ratefile = fopen("rates.dat", "ab"); - - /* handling wrong input arguments in the command line */ - if ((argc < 6) || (argc > 10)) { - printf("\n\nWrong number of arguments or flag values.\n\n"); - - printf("\n"); - WebRtcIsacfix_version(version_number); - printf("iSAC version %s \n\n", version_number); - - printf("Usage:\n\n"); - printf("./kenny.exe [-I] bottleneck_value infile outfile \n\n"); - printf("with:\n"); - - printf("[-I] : If -I option is specified, the coder will use\n"); - printf(" an instantaneous Bottleneck value. If not, it\n"); - printf(" will be an adaptive Bottleneck value.\n\n"); - printf("bottleneck_value: The value of the bottleneck provided either\n"); - printf(" as a fixed value (e.g. 25000) or\n"); - printf(" read from a file (e.g. bottleneck.txt)\n\n"); - printf("[-m] mode : Mode (encoder - decoder):\n"); - printf(" 0 - float - float\n"); - printf(" 1 - float - fix\n"); - printf(" 2 - fix - float\n"); - printf(" 3 - fix - fix\n\n"); - printf("[-PLC] : Test PLC packetlosses\n\n"); - printf("[-NB] num : Test NB interfaces:\n"); - printf(" 1 - encNB\n"); - printf(" 2 - decNB\n\n"); - printf("infile : Normal speech input file\n\n"); - printf("outfile : Speech output file\n\n"); - printf("Example usage:\n\n"); - printf("./kenny.exe -I bottleneck.txt -m 1 speechIn.pcm speechOut.pcm\n\n"); - exit(0); - } - - printf("--------------------START---------------------\n\n"); - WebRtcIsac_version(version_number); - printf("iSAC FLOAT version %s \n", version_number); - WebRtcIsacfix_version(version_number); - printf("iSAC FIX version %s \n\n", version_number); - - CodingMode = 0; - tmp = 1; - for (i = 1; i < argc; i++) { - if (!strcmp("-I", argv[i])) { - printf("\nInstantaneous BottleNeck\n"); - CodingMode = 1; - i++; - tmp = 0; - } - - if (!strcmp("-m", argv[i])) { - mode = atoi(argv[i + 1]); - i++; - } - - if (!strcmp("-PLC", argv[i])) { - plc = 1; - } - - if (!strcmp("-NB", argv[i])) { - nbTest = atoi(argv[i + 1]); - i++; - } - } - - if (mode < 0) { - printf("\nError! Mode must be set: -m 0 \n"); - exit(0); - } - - if (CodingMode == 0) { - printf("\nAdaptive BottleNeck\n"); - } - - /* Get Bottleneck value */ - bottleneck = atoi(argv[2 - tmp]); - if (bottleneck == 0) { - sscanf(argv[2 - tmp], "%s", bottleneck_file); - f_bn = fopen(bottleneck_file, "rb"); - if (f_bn == NULL) { - printf("No value provided for BottleNeck and cannot read file %s.\n", - bottleneck_file); - exit(0); - } else { - printf("reading bottleneck rates from file %s\n\n", bottleneck_file); - if (fscanf(f_bn, "%d", &bottleneck) == EOF) { - /* Set pointer to beginning of file */ - fseek(f_bn, 0L, SEEK_SET); - fscanf(f_bn, "%d", &bottleneck); - } - - /* Bottleneck is a cosine function - * Matlab code for writing the bottleneck file: - * BottleNeck_10ms = 20e3 + 10e3 * cos((0:5999)/5999*2*pi); - * fid = fopen('bottleneck.txt', 'wb'); - * fprintf(fid, '%d\n', BottleNeck_10ms); fclose(fid); - */ - } - } else { - printf("\nfixed bottleneck rate of %d bits/s\n\n", bottleneck); - } - - /* Get Input and Output files */ - sscanf(argv[argc - 2], "%s", inname); - sscanf(argv[argc - 1], "%s", outname); - - if ((inp = fopen(inname, "rb")) == NULL) { - printf(" iSAC: Cannot read file %s.\n", inname); - exit(1); - } - if ((outp = fopen(outname, "wb")) == NULL) { - printf(" iSAC: Cannot write file %s.\n", outname); - exit(1); - } - printf("\nInput:%s\nOutput:%s\n", inname, outname); - - i = 0; - while (outname[i] != '\0') { - bitfilename[i] = outname[i]; - i++; - } - i -= 4; - for (j = 0; j < 9; j++, i++) - bitfilename[i] = bitending[j]; - bitfilename[i] = '\0'; - if ((bitsp = fopen(bitfilename, "wb")) == NULL) { - printf(" iSAC: Cannot read file %s.\n", bitfilename); - exit(1); - } - printf("Bitstream:%s\n\n", bitfilename); - - starttime = clock() / (double)CLOCKS_PER_SEC; /* Runtime statistics */ - - /* Initialize the ISAC and BN structs */ - WebRtcIsac_create(&ISAC_main_inst); - WebRtcIsacfix_Create(&ISACFIX_main_inst); - - BN_data.send_time = 0; - BN_data.arrival_time = 0; - BN_data.sample_count = 0; - BN_data.rtp_number = 0; - - /* Initialize encoder and decoder */ - framecnt = 0; - endfile = 0; - - if (mode == 0) { /* Encode using FLOAT, decode using FLOAT */ - - printf("Coding mode: Encode using FLOAT, decode using FLOAT \n\n"); - - /* Init iSAC FLOAT */ - WebRtcIsac_EncoderInit(ISAC_main_inst, CodingMode); - WebRtcIsac_DecoderInit(ISAC_main_inst); - if (CodingMode == 1) { - err = WebRtcIsac_Control(ISAC_main_inst, bottleneck, framesize); - if (err < 0) { - /* exit if returned with error */ - errtype = WebRtcIsac_GetErrorCode(ISAC_main_inst); - printf("\n\n Error in initialization: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - } - - } else if (mode == 1) { /* Encode using FLOAT, decode using FIX */ - - printf("Coding mode: Encode using FLOAT, decode using FIX \n\n"); - - /* Init iSAC FLOAT */ - WebRtcIsac_EncoderInit(ISAC_main_inst, CodingMode); - WebRtcIsac_DecoderInit(ISAC_main_inst); - if (CodingMode == 1) { - err = WebRtcIsac_Control(ISAC_main_inst, bottleneck, framesize); - if (err < 0) { - /* exit if returned with error */ - errtype = WebRtcIsac_GetErrorCode(ISAC_main_inst); - printf("\n\n Error in initialization: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - } - - /* Init iSAC FIX */ - WebRtcIsacfix_EncoderInit(ISACFIX_main_inst, CodingMode); - WebRtcIsacfix_DecoderInit(ISACFIX_main_inst); - if (CodingMode == 1) { - err = WebRtcIsacfix_Control(ISACFIX_main_inst, bottleneck, framesize); - if (err < 0) { - /* exit if returned with error */ - errtype = WebRtcIsacfix_GetErrorCode(ISACFIX_main_inst); - printf("\n\n Error in initialization: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - } - } else if (mode == 2) { /* Encode using FIX, decode using FLOAT */ - - printf("Coding mode: Encode using FIX, decode using FLOAT \n\n"); - - /* Init iSAC FLOAT */ - WebRtcIsac_EncoderInit(ISAC_main_inst, CodingMode); - WebRtcIsac_DecoderInit(ISAC_main_inst); - if (CodingMode == 1) { - err = WebRtcIsac_Control(ISAC_main_inst, bottleneck, framesize); - if (err < 0) { - /* exit if returned with error */ - errtype = WebRtcIsac_GetErrorCode(ISAC_main_inst); - printf("\n\n Error in initialization: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - } - - /* Init iSAC FIX */ - WebRtcIsacfix_EncoderInit(ISACFIX_main_inst, CodingMode); - WebRtcIsacfix_DecoderInit(ISACFIX_main_inst); - if (CodingMode == 1) { - err = WebRtcIsacfix_Control(ISACFIX_main_inst, bottleneck, framesize); - if (err < 0) { - /* exit if returned with error */ - errtype = WebRtcIsacfix_GetErrorCode(ISACFIX_main_inst); - printf("\n\n Error in initialization: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - } - } else if (mode == 3) { - printf("Coding mode: Encode using FIX, decode using FIX \n\n"); - - WebRtcIsacfix_EncoderInit(ISACFIX_main_inst, CodingMode); - WebRtcIsacfix_DecoderInit(ISACFIX_main_inst); - if (CodingMode == 1) { - err = WebRtcIsacfix_Control(ISACFIX_main_inst, bottleneck, framesize); - if (err < 0) { - /* exit if returned with error */ - errtype = WebRtcIsacfix_GetErrorCode(ISACFIX_main_inst); - printf("\n\n Error in initialization: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - } - - } else - printf("Mode must be value between 0 and 3\n"); - *speechType = 1; - -//#define BI_TEST 1 -#ifdef BI_TEST - err = WebRtcIsacfix_SetMaxPayloadSize(ISACFIX_main_inst, 300); - if (err < 0) { - /* exit if returned with error */ - errtype = WebRtcIsacfix_GetErrorCode(ISACFIX_main_inst); - printf("\n\n Error in setMaxPayloadSize: %d.\n\n", errtype); - fclose(inp); - fclose(outp); - fclose(bitsp); - return (EXIT_FAILURE); - } -#endif - - while (endfile == 0) { - cur_framesmpls = 0; - while (1) { - int stream_len_int; - - /* Read 10 ms speech block */ - if (nbTest != 1) - endfile = readframe(shortdata, inp, FRAMESAMPLES_10ms); - else - endfile = readframe(shortdata, inp, (FRAMESAMPLES_10ms / 2)); - - /* iSAC encoding */ - - if (mode == 0 || mode == 1) { - stream_len_int = - WebRtcIsac_Encode(ISAC_main_inst, shortdata, (uint8_t*)streamdata); - if (stream_len_int < 0) { - /* exit if returned with error */ - errtype = WebRtcIsac_GetErrorCode(ISAC_main_inst); - printf("\n\nError in encoder: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - } else if (mode == 2 || mode == 3) { - /* iSAC encoding */ - if (nbTest != 1) { - stream_len_int = WebRtcIsacfix_Encode(ISACFIX_main_inst, shortdata, - (uint8_t*)streamdata); - } else { - stream_len_int = - WebRtcIsacfix_EncodeNb(ISACFIX_main_inst, shortdata, streamdata); - } - - if (stream_len_int < 0) { - /* exit if returned with error */ - errtype = WebRtcIsacfix_GetErrorCode(ISACFIX_main_inst); - printf("\n\nError in encoder: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - } - stream_len = (size_t)stream_len_int; - - cur_framesmpls += FRAMESAMPLES_10ms; - - /* read next bottleneck rate */ - if (f_bn != NULL) { - if (fscanf(f_bn, "%d", &bottleneck) == EOF) { - /* Set pointer to beginning of file */ - fseek(f_bn, 0L, SEEK_SET); - fscanf(f_bn, "%d", &bottleneck); - } - if (CodingMode == 1) { - if (mode == 0 || mode == 1) - WebRtcIsac_Control(ISAC_main_inst, bottleneck, framesize); - else if (mode == 2 || mode == 3) - WebRtcIsacfix_Control(ISACFIX_main_inst, bottleneck, framesize); - } - } - - /* exit encoder loop if the encoder returned a bitstream */ - if (stream_len != 0) - break; - } - - fwrite(streamdata, 1, stream_len, bitsp); /* NOTE! Writes bytes to file */ - - /* simulate packet handling through NetEq and the modem */ - get_arrival_time(cur_framesmpls, stream_len, bottleneck, &BN_data); - //***************************** - if (1) { - if (mode == 0) { - err = WebRtcIsac_UpdateBwEstimate(ISAC_main_inst, streamdata, - stream_len, BN_data.rtp_number, - BN_data.arrival_time); - - if (err < 0) { - /* exit if returned with error */ - errtype = WebRtcIsac_GetErrorCode(ISAC_main_inst); - printf("\n\nError in decoder: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - /* iSAC decoding */ - declen = WebRtcIsac_Decode(ISAC_main_inst, streamdata, stream_len, - decoded, speechType); - if (declen <= 0) { - /* exit if returned with error */ - errtype = WebRtcIsac_GetErrorCode(ISAC_main_inst); - printf("\n\nError in decoder: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - } else if (mode == 1) { - err = WebRtcIsac_UpdateBwEstimate(ISAC_main_inst, streamdata, - stream_len, BN_data.rtp_number, - BN_data.arrival_time); - err = WebRtcIsacfix_UpdateBwEstimate1(ISACFIX_main_inst, streamdata, - stream_len, BN_data.rtp_number, - BN_data.arrival_time); - if (err < 0) { - /* exit if returned with error */ - errtype = WebRtcIsacfix_GetErrorCode(ISACFIX_main_inst); - printf("\n\nError in decoder: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - - declen = WebRtcIsac_Decode(ISAC_main_inst, streamdata, stream_len, - decoded, speechType); - - /* iSAC decoding */ - if (plc && (framecnt + 1) % 10 == 0) { - if (nbTest != 2) { - declen = - (int)WebRtcIsacfix_DecodePlc(ISACFIX_main_inst, decoded, 1); - } else { - declen = - (int)WebRtcIsacfix_DecodePlcNb(ISACFIX_main_inst, decoded, 1); - } - } else { - if (nbTest != 2) - declen = WebRtcIsacfix_Decode(ISACFIX_main_inst, streamdata, - stream_len, decoded, speechType); - else - declen = WebRtcIsacfix_DecodeNb(ISACFIX_main_inst, streamdata, - stream_len, decoded, speechType); - } - - if (declen <= 0) { - /* exit if returned with error */ - errtype = WebRtcIsacfix_GetErrorCode(ISACFIX_main_inst); - printf("\n\nError in decoder: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - } else if (mode == 2) { - err = WebRtcIsacfix_UpdateBwEstimate1(ISACFIX_main_inst, streamdata, - stream_len, BN_data.rtp_number, - BN_data.arrival_time); - - err = WebRtcIsac_UpdateBwEstimate(ISAC_main_inst, streamdata, - stream_len, BN_data.rtp_number, - BN_data.arrival_time); - - if (err < 0) { - /* exit if returned with error */ - errtype = WebRtcIsac_GetErrorCode(ISAC_main_inst); - printf("\n\nError in decoder: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - /* iSAC decoding */ - declen = WebRtcIsac_Decode(ISAC_main_inst, streamdata, stream_len, - decoded, speechType); - if (declen <= 0) { - /* exit if returned with error */ - errtype = WebRtcIsac_GetErrorCode(ISAC_main_inst); - printf("\n\nError in decoder: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - } else if (mode == 3) { - err = WebRtcIsacfix_UpdateBwEstimate( - ISACFIX_main_inst, streamdata, stream_len, BN_data.rtp_number, - BN_data.send_time, BN_data.arrival_time); - - if (err < 0) { - /* exit if returned with error */ - errtype = WebRtcIsacfix_GetErrorCode(ISACFIX_main_inst); - printf("\n\nError in decoder: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - /* iSAC decoding */ - - if (plc && (framecnt + 1) % 10 == 0) { - if (nbTest != 2) { - declen = - (int)WebRtcIsacfix_DecodePlc(ISACFIX_main_inst, decoded, 1); - } else { - declen = - (int)WebRtcIsacfix_DecodePlcNb(ISACFIX_main_inst, decoded, 1); - } - } else { - if (nbTest != 2) { - declen = WebRtcIsacfix_Decode(ISACFIX_main_inst, streamdata, - stream_len, decoded, speechType); - } else { - declen = WebRtcIsacfix_DecodeNb(ISACFIX_main_inst, streamdata, - stream_len, decoded, speechType); - } - } - if (declen <= 0) { - /* exit if returned with error */ - errtype = WebRtcIsacfix_GetErrorCode(ISACFIX_main_inst); - printf("\n\nError in decoder: %d.\n\n", errtype); - // exit(EXIT_FAILURE); - } - } - - /* Write decoded speech frame to file */ - fwrite(decoded, sizeof(int16_t), declen, outp); - } - - fprintf(stderr, " \rframe = %d", framecnt); - framecnt++; - -#if !defined(NDEBUG) - - totalsmpls += declen; - totalbits += 8 * stream_len; - kbps = (double)FS / (double)cur_framesmpls * 8.0 * stream_len / 1000.0; - fy = fopen("bit_rate.dat", "a"); - fprintf(fy, "Frame %i = %0.14f\n", framecnt, kbps); - fclose(fy); - -#endif - } - -#if !defined(NDEBUG) - printf("\n\ntotal bits = %" PRIuS " bits", totalbits); - printf("\nmeasured average bitrate = %0.3f kbits/s", - (double)totalbits * (FS / 1000) / totalsmpls); - printf("\n"); -#endif - - /* Runtime statistics */ - runtime = (double)(clock() / (double)CLOCKS_PER_SEC - starttime); - length_file = ((double)framecnt * (double)declen / FS); - printf("\n\nLength of speech file: %.1f s\n", length_file); - printf("Time to run iSAC: %.2f s (%.2f %% of realtime)\n\n", runtime, - (100 * runtime / length_file)); - printf("---------------------END----------------------\n"); - - fclose(inp); - fclose(outp); - - WebRtcIsac_Free(ISAC_main_inst); - WebRtcIsacfix_Free(ISACFIX_main_inst); - - // fclose(histfile); - // fclose(ratefile); - - return 0; -} diff --git a/webrtc/modules/audio_coding/codecs/isac/main/test/ReleaseTest-API/ReleaseTest-API.cc b/webrtc/modules/audio_coding/codecs/isac/main/test/ReleaseTest-API/ReleaseTest-API.cc index a734bb0643..33518a718e 100644 --- a/webrtc/modules/audio_coding/codecs/isac/main/test/ReleaseTest-API/ReleaseTest-API.cc +++ b/webrtc/modules/audio_coding/codecs/isac/main/test/ReleaseTest-API/ReleaseTest-API.cc @@ -121,7 +121,7 @@ int main(int argc, char* argv[]) { printf("iSAC-swb version %s \n\n", version_number); printf("Usage:\n\n"); - printf("./kenny.exe [-I] bottleneck_value infile outfile \n\n"); + printf("%s [-I] bottleneck_value infile outfile \n\n", argv[0]); printf("with:\n"); printf("[-FS num] : sampling frequency in kHz, valid values are\n"); printf(" 16 & 32, with 16 as default.\n");