/*
 *  Copyright (c) 2012 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.
 */

#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "modules/audio_coding/codecs/isac/fix/include/isacfix.h"
#include "test/gtest.h"
#include "test/testsupport/perf_test.h"

// TODO(kma): Clean up the code and change benchmarking the whole codec to
// separate encoder and decoder.

/* Defines */
#define SEED_FILE                                             \
  "randseed.txt" /* Used when running decoder on garbage data \
                  */
#define MAX_FRAMESAMPLES \
  960 /* max number of samples per frame (= 60 ms frame) */
#define FRAMESAMPLES_10ms 160 /* number of samples per 10ms frame */
#define FS 16000              /* sampling frequency (Hz) */

/* 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;
}

// Globals needed because gtest does not provide access to argv.
// This should be reworked to use flags.
static int global_argc;
static char** global_argv;

/* Struct for bottleneck model */
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 += static_cast<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++;
}

void get_arrival_time2(int current_framesamples,
                       int current_delay,
                       BottleNeckModel* BN_data) {
  if (current_delay == -1)
  // dropped packet
  {
    BN_data->arrival_time += current_framesamples;
  } else if (current_delay != -2) {
    //
    BN_data->arrival_time +=
        (current_framesamples + ((FS / 1000) * current_delay));
  }
  // else
  // current packet has same timestamp as previous packet

  BN_data->rtp_number++;
}

TEST(IsacFixTest, Kenny) {
  int argc = global_argc;
  char** argv = global_argv;

  char inname[100], outname[100], outbitsname[100], bottleneck_file[100];
  FILE *inp, *outp, *f_bn, *outbits;
  int endfile;

  const char* perf_result_file = NULL;

  int i;
  int errtype, h = 0, k, packetLossPercent = 0;
  int16_t CodingMode;
  int16_t bottleneck;
  int framesize = 30; /* ms */
  int cur_framesmpls, err = 0, lostPackets = 0;

  /* Runtime statistics */
  double starttime, runtime, length_file;

  int stream_len_int = 0;
  size_t stream_len = 0;
  int16_t framecnt;
  int declen = 0;
  int16_t shortdata[FRAMESAMPLES_10ms];
  int16_t decoded[MAX_FRAMESAMPLES];
  uint16_t streamdata[500];
  int16_t speechType[1];
  size_t prevFrameSize = 1;
  int16_t rateBPS = 0;
  int16_t fixedFL = 0;
  int16_t payloadSize = 0;
  int32_t payloadRate = 0;
  int setControlBWE = 0;
  int readLoss;
  FILE* plFile = NULL;

  char version_number[20];
  char tmpBit[5] = ".bit";

  int totalbits = 0;
  int totalsmpls = 0;
  int16_t testNum, testCE;

  FILE* fp_gns = NULL;
  int gns = 0;
  int cur_delay = 0;
  char gns_file[100];

  int nbTest = 0;
  int16_t lostFrame;
  float scale = (float)0.7;
  /* only one structure used for ISAC encoder */
  ISACFIX_MainStruct* ISAC_main_inst = NULL;

  /* For fault test 10, garbage data */
  FILE* seedfile;
  unsigned int random_seed = (unsigned int)time(NULL);  // 1196764538

  BottleNeckModel BN_data;
  f_bn = NULL;

  readLoss = 0;
  packetLossPercent = 0;

  /* Handling wrong input arguments in the command line */
  if ((argc < 3) || (argc > 22)) {
    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("%s [-I] bottleneck_value infile outfile [-F num]\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");
    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("infile           :Normal speech input file\n\n");
    printf("outfile          :Speech output file\n\n");
    printf(
        "[-INITRATE num]  :Set a new value for initial rate. Note! Only used"
        " in adaptive mode.\n\n");
    printf(
        "[-FL num]        :Set (initial) frame length in msec. Valid length"
        " are 30 and 60 msec.\n\n");
    printf("[-FIXED_FL]      :Frame length to be fixed to initial value.\n\n");
    printf(
        "[-MAX num]       :Set the limit for the payload size of iSAC"
        " in bytes. \n");
    printf("                  Minimum 100, maximum 400.\n\n");
    printf("[-MAXRATE num]   :Set the maxrate for iSAC in bits per second. \n");
    printf("                  Minimum 32000, maximum 53400.\n\n");
    printf("[-F num]         :if -F option is specified, the test function\n");
    printf(
        "                  will run the iSAC API fault scenario specified"
        " by the\n");
    printf("                  supplied number.\n");
    printf("                  F 1 - Call encoder prior to init encoder call\n");
    printf("                  F 2 - Call decoder prior to init decoder call\n");
    printf("                  F 3 - Call decoder prior to encoder call\n");
    printf(
        "                  F 4 - Call decoder with a too short coded"
        " sequence\n");
    printf(
        "                  F 5 - Call decoder with a too long coded"
        " sequence\n");
    printf("                  F 6 - Call decoder with random bit stream\n");
    printf(
        "                  F 7 - Call init encoder/decoder at random"
        " during a call\n");
    printf(
        "                  F 8 - Call encoder/decoder without having"
        " allocated memory for \n");
    printf("                        encoder/decoder instance\n");
    printf("                  F 9 - Call decodeB without calling decodeA\n");
    printf("                  F 10 - Call decodeB with garbage data\n");
    printf(
        "[-PL num]        :if -PL option is specified 0<num<100 will "
        "specify the\n");
    printf("                  percentage of packet loss\n\n");
    printf(
        "[-G file]        :if -G option is specified the file given is"
        " a .gns file\n");
    printf("                  that represents a network profile\n\n");
    printf("[-NB num]        :if -NB option, use the narrowband interfaces\n");
    printf(
        "                  num=1 => encode with narrowband encoder"
        " (infile is narrowband)\n");
    printf(
        "                  num=2 => decode with narrowband decoder"
        " (outfile is narrowband)\n\n");
    printf("[-CE num]        :Test of APIs used by Conference Engine.\n");
    printf(
        "                  CE 1 - createInternal, freeInternal,"
        " getNewBitstream \n");
    printf("                  CE 2 - transcode, getBWE \n");
    printf("                  CE 3 - getSendBWE, setSendBWE.  \n\n");
    printf(
        "[-RTP_INIT num]  :if -RTP_INIT option is specified num will be"
        " the initial\n");
    printf("                  value of the rtp sequence number.\n\n");
    printf("[--isolated_script_test_perf_output=file]\n");
    printf(
        "                 :If this option is specified, perf values will be"
        " written to this file in a JSON format.\n\n");
    printf("Example usage    :\n\n");
    printf("%s -I bottleneck.txt speechIn.pcm speechOut.pcm\n\n", argv[0]);
    exit(1);
  }

  /* Print version number */
  WebRtcIsacfix_version(version_number);
  printf("iSAC version %s \n\n", version_number);

  /* Loop over all command line arguments */
  CodingMode = 0;
  testNum = 0;
  testCE = 0;
  i = 1;

  /* Instantaneous mode */
  if (!strcmp("-I", argv[i])) {
    printf("\nInstantaneous BottleNeck\n");
    CodingMode = 1;
    i++;
  }

  /* Bottleneck value is processed after the for */
  i++;

  /* Get Input and Output files */
  sscanf(argv[i++], "%s", inname);
  sscanf(argv[i++], "%s", outname);

  for (; i < argc; i++) {
    /* Set (initial) bottleneck value */
    if (!strcmp("-INITRATE", argv[i])) {
      if (i + 1 >= argc) {
        printf("-INITRATE requires a parameter.\n");
        exit(1);
      }
      rateBPS = atoi(argv[i + 1]);
      setControlBWE = 1;
      if ((rateBPS < 10000) || (rateBPS > 32000)) {
        printf(
            "\n%d is not a initial rate. "
            "Valid values are in the range 10000 to 32000.\n",
            rateBPS);
        exit(1);
      }
      printf("\nNew initial rate: %d\n", rateBPS);
      i++;
    }

    /* Set (initial) framelength */
    if (!strcmp("-FL", argv[i])) {
      if (i + 1 >= argc) {
        printf("-FL requires a parameter.\n");
        exit(1);
      }
      framesize = atoi(argv[i + 1]);
      if ((framesize != 30) && (framesize != 60)) {
        printf(
            "\n%d is not a valid frame length. "
            "Valid length are 30 and 60 msec.\n",
            framesize);
        exit(1);
      }
      printf("\nFrame Length: %d\n", framesize);
      i++;
    }

    /* Fixed frame length */
    if (!strcmp("-FIXED_FL", argv[i])) {
      fixedFL = 1;
      setControlBWE = 1;
    }

    /* Set maximum allowed payload size in bytes */
    if (!strcmp("-MAX", argv[i])) {
      if (i + 1 >= argc) {
        printf("-MAX requires a parameter.\n");
        exit(1);
      }
      payloadSize = atoi(argv[i + 1]);
      printf("Maximum Payload Size: %d\n", payloadSize);
      i++;
    }

    /* Set maximum rate in bytes */
    if (!strcmp("-MAXRATE", argv[i])) {
      if (i + 1 >= argc) {
        printf("-MAXRATE requires a parameter.\n");
        exit(1);
      }
      payloadRate = atoi(argv[i + 1]);
      printf("Maximum Rate in kbps: %d\n", payloadRate);
      i++;
    }

    /* Test of fault scenarious */
    if (!strcmp("-F", argv[i])) {
      if (i + 1 >= argc) {
        printf("-F requires a parameter.");
        exit(1);
      }
      testNum = atoi(argv[i + 1]);
      printf("\nFault test: %d\n", testNum);
      if (testNum < 1 || testNum > 10) {
        printf(
            "\n%d is not a valid Fault Scenario number."
            " Valid Fault Scenarios are numbered 1-10.\n",
            testNum);
        exit(1);
      }
      i++;
    }

    /* Packet loss test */
    if (!strcmp("-PL", argv[i])) {
      if (i + 1 >= argc) {
        printf("-PL requires a parameter.\n");
        exit(1);
      }
      if (isdigit(*argv[i + 1])) {
        packetLossPercent = atoi(argv[i + 1]);
        if ((packetLossPercent < 0) | (packetLossPercent > 100)) {
          printf("\nInvalid packet loss perentage \n");
          exit(1);
        }
        if (packetLossPercent > 0) {
          printf("\nSimulating %d %% of independent packet loss\n",
                 packetLossPercent);
        } else {
          printf("\nNo Packet Loss Is Simulated \n");
        }
        readLoss = 0;
      } else {
        readLoss = 1;
        plFile = fopen(argv[i + 1], "rb");
        if (plFile == NULL) {
          FAIL() << "Couldn't open the frameloss file: " << argv[i + 1];
        }
        printf(
            "\nSimulating packet loss through the given "
            "channel file: %s\n",
            argv[i + 1]);
      }
      i++;
    }

    /* Random packetlosses */
    if (!strcmp("-rnd", argv[i])) {
      srand(time(NULL));
      printf("\n Random pattern in lossed packets \n");
    }

    /* Use gns file */
    if (!strcmp("-G", argv[i])) {
      if (i + 1 >= argc) {
        printf("-G requires a parameter.\n");
        exit(1);
      }
      sscanf(argv[i + 1], "%s", gns_file);
      fp_gns = fopen(gns_file, "rb");
      if (fp_gns == NULL) {
        FAIL() << "Cannot read file " << gns_file << ".";
      }
      gns = 1;
      i++;
    }

    /* Run Narrowband interfaces (either encoder or decoder) */
    if (!strcmp("-NB", argv[i])) {
      if (i + 1 >= argc) {
        printf("-NB requires a parameter.\n");
        exit(1);
      }
      nbTest = atoi(argv[i + 1]);
      i++;
    }

    /* Run Conference Engine APIs */
    if (!strcmp("-CE", argv[i])) {
      if (i + 1 >= argc) {
        printf("-CE requires a parameter.\n");
        exit(1);
      }
      testCE = atoi(argv[i + 1]);
      if (testCE == 1 || testCE == 2) {
        i++;
        scale = (float)atof(argv[i + 1]);
      } else if (testCE < 1 || testCE > 3) {
        printf(
            "\n%d is not a valid CE-test number, valid Fault "
            "Scenarios are numbered 1-3\n",
            testCE);
        exit(1);
      }
      i++;
    }

    /* Set initial RTP number */
    if (!strcmp("-RTP_INIT", argv[i])) {
      if (i + 1 >= argc) {
        printf("-RTP_INIT requires a parameter.\n");
        exit(1);
      }
      i++;
    }

    if (strstr(argv[i], "--isolated_script_test_perf_output") == argv[i]) {
      const char* filename_start = strstr(argv[i], "=");
      if (!filename_start || strlen(filename_start) < 2) {
        printf("Expected --isolated_script_test_perf_output=/some/filename\n");
        exit(1);
      }
      perf_result_file = filename_start + 1;
    }
  }

  /* Get Bottleneck value                                                   */
  /* Gns files and bottleneck should not and can not be used simultaneously */
  bottleneck = atoi(argv[CodingMode + 1]);
  if (bottleneck == 0 && gns == 0) {
    sscanf(argv[CodingMode + 1], "%s", bottleneck_file);
    f_bn = fopen(bottleneck_file, "rb");
    if (f_bn == NULL) {
      printf("No value provided for BottleNeck\n");
      FAIL() << "Cannot read file " << bottleneck_file;
    } else {
      int aux_var;
      printf("reading bottleneck rates from file %s\n\n", bottleneck_file);
      if (fscanf(f_bn, "%d", &aux_var) == EOF) {
        /* Set pointer to beginning of file */
        fseek(f_bn, 0L, SEEK_SET);
        if (fscanf(f_bn, "%d", &aux_var) == EOF) {
          FAIL();
        }
      }
      bottleneck = (int16_t)aux_var;
      /* 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 {
    f_bn = NULL;
    printf("\nfixed bottleneck rate of %d bits/s\n\n", bottleneck);
  }

  if (CodingMode == 0) {
    printf("\nAdaptive BottleNeck\n");
  }

  /* Add '.bit' to output bitstream file */
  while ((int)outname[h] != 0) {
    outbitsname[h] = outname[h];
    h++;
  }
  for (k = 0; k < 5; k++) {
    outbitsname[h] = tmpBit[k];
    h++;
  }
  if ((inp = fopen(inname, "rb")) == NULL) {
    FAIL() << "  iSAC: Cannot read file " << inname;
  }
  if ((outp = fopen(outname, "wb")) == NULL) {
    FAIL() << "  iSAC: Cannot write file " << outname;
  }

  if ((outbits = fopen(outbitsname, "wb")) == NULL) {
    FAIL() << "  iSAC: Cannot write file " << outbitsname;
  }
  printf("\nInput:%s\nOutput:%s\n\n", inname, outname);

  /* Error test number 10, garbage data */
  if (testNum == 10) {
    /* Test to run decoder with garbage data */
    srand(random_seed);

    if ((seedfile = fopen(SEED_FILE, "a+t")) == NULL) {
      printf("Error: Could not open file %s\n", SEED_FILE);
    } else {
      fprintf(seedfile, "%u\n", random_seed);
      fclose(seedfile);
    }
  }

  /* Runtime statistics */
  starttime = clock() / (double)CLOCKS_PER_SEC;

  /* Initialize the ISAC and BN structs */
  if (testNum != 8) {
    err = WebRtcIsacfix_Create(&ISAC_main_inst);

    /* Error check */
    if (err < 0) {
      printf("\n\n Error in create.\n\n");
    }
    if (testCE == 1) {
      err = WebRtcIsacfix_CreateInternal(ISAC_main_inst);
      /* Error check */
      if (err < 0) {
        printf("\n\n Error in createInternal.\n\n");
      }
    }
  }

  /* Init of bandwidth data */
  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 (testNum != 1) {
    WebRtcIsacfix_EncoderInit(ISAC_main_inst, CodingMode);
  }
  if (testNum != 2) {
    WebRtcIsacfix_DecoderInit(ISAC_main_inst);
  }

  if (CodingMode == 1) {
    err = WebRtcIsacfix_Control(ISAC_main_inst, bottleneck, framesize);
    if (err < 0) {
      /* exit if returned with error */
      errtype = WebRtcIsacfix_GetErrorCode(ISAC_main_inst);
      printf("\n\n Error in control: %d.\n\n", errtype);
    }
  } else if (setControlBWE == 1) {
    err = WebRtcIsacfix_ControlBwe(ISAC_main_inst, rateBPS, framesize, fixedFL);
  }

  if (payloadSize != 0) {
    err = WebRtcIsacfix_SetMaxPayloadSize(ISAC_main_inst, payloadSize);
    if (err < 0) {
      /* exit if returned with error */
      errtype = WebRtcIsacfix_GetErrorCode(ISAC_main_inst);
      FAIL() << "Error in SetMaxPayloadSize: " << errtype;
    }
  }
  if (payloadRate != 0) {
    err = WebRtcIsacfix_SetMaxRate(ISAC_main_inst, payloadRate);
    if (err < 0) {
      /* exit if returned with error */
      errtype = WebRtcIsacfix_GetErrorCode(ISAC_main_inst);
      FAIL() << "Error in SetMaxRateInBytes: " << errtype;
    }
  }

  *speechType = 1;

  while (endfile == 0) {
    if (testNum == 7 && (rand() % 2 == 0)) {
      err = WebRtcIsacfix_EncoderInit(ISAC_main_inst, CodingMode);
      /* Error check */
      if (err < 0) {
        errtype = WebRtcIsacfix_GetErrorCode(ISAC_main_inst);
        printf("\n\n Error in encoderinit: %d.\n\n", errtype);
      }

      WebRtcIsacfix_DecoderInit(ISAC_main_inst);
    }

    cur_framesmpls = 0;
    while (1) {
      /* Read 10 ms speech block */
      if (nbTest != 1) {
        endfile = readframe(shortdata, inp, FRAMESAMPLES_10ms);
      } else {
        endfile = readframe(shortdata, inp, (FRAMESAMPLES_10ms / 2));
      }

      if (testNum == 7) {
        srand(time(NULL));
      }

      /* iSAC encoding */
      if (!(testNum == 3 && framecnt == 0)) {
        if (nbTest != 1) {
          short bwe;

          /* Encode */
          stream_len_int = WebRtcIsacfix_Encode(ISAC_main_inst, shortdata,
                                                (uint8_t*)streamdata);

          /* If packet is ready, and CE testing, call the different API
             functions from the internal API. */
          if (stream_len_int > 0) {
            if (testCE == 1) {
              err = WebRtcIsacfix_ReadBwIndex(
                  reinterpret_cast<const uint8_t*>(streamdata),
                  static_cast<size_t>(stream_len_int), &bwe);
              stream_len_int = WebRtcIsacfix_GetNewBitStream(
                  ISAC_main_inst, bwe, scale,
                  reinterpret_cast<uint8_t*>(streamdata));
            } else if (testCE == 2) {
              /* transcode function not supported */
            } else if (testCE == 3) {
              /* Only for Function testing. The functions should normally
                 not be used in this way                                      */

              err = WebRtcIsacfix_GetDownLinkBwIndex(ISAC_main_inst, &bwe);
              /* Error Check */
              if (err < 0) {
                errtype = WebRtcIsacfix_GetErrorCode(ISAC_main_inst);
                printf("\nError in getSendBWE: %d.\n", errtype);
              }

              err = WebRtcIsacfix_UpdateUplinkBw(ISAC_main_inst, bwe);
              /* Error Check */
              if (err < 0) {
                errtype = WebRtcIsacfix_GetErrorCode(ISAC_main_inst);
                printf("\nError in setBWE: %d.\n", errtype);
              }
            }
          }
        } else {
          stream_len_int = -1;
        }
      } else {
        break;
      }

      if (stream_len_int < 0 || err < 0) {
        /* exit if returned with error */
        errtype = WebRtcIsacfix_GetErrorCode(ISAC_main_inst);
        printf("\nError in encoder: %d.\n", errtype);
      } else {
        stream_len = static_cast<size_t>(stream_len_int);
        if (fwrite(streamdata, sizeof(char), stream_len, outbits) !=
            stream_len) {
          FAIL();
        }
      }

      cur_framesmpls += FRAMESAMPLES_10ms;

      /* read next bottleneck rate */
      if (f_bn != NULL) {
        int aux_var;
        if (fscanf(f_bn, "%d", &aux_var) == EOF) {
          /* Set pointer to beginning of file */
          fseek(f_bn, 0L, SEEK_SET);
          if (fscanf(f_bn, "%d", &aux_var) == EOF) {
            FAIL();
          }
        }
        bottleneck = (int16_t)aux_var;
        if (CodingMode == 1) {
          WebRtcIsacfix_Control(ISAC_main_inst, bottleneck, framesize);
        }
      }

      /* exit encoder loop if the encoder returned a bitstream */
      if (stream_len != 0)
        break;
    }

    /* make coded sequence to short be inreasing */
    /* the length the decoder expects */
    if (testNum == 4) {
      stream_len += 10;
    }

    /* make coded sequence to long be decreasing */
    /* the length the decoder expects */
    if (testNum == 5) {
      stream_len -= 10;
    }

    if (testNum == 6) {
      srand(time(NULL));
      for (i = 0; i < static_cast<int>(stream_len); i++) {
        streamdata[i] = rand();
      }
    }

    /* set pointer to beginning of file */
    if (fp_gns != NULL) {
      if (fscanf(fp_gns, "%d", &cur_delay) == EOF) {
        fseek(fp_gns, 0L, SEEK_SET);
        if (fscanf(fp_gns, "%d", &cur_delay) == EOF) {
          FAIL();
        }
      }
    }

    /* simulate packet handling through NetEq and the modem */
    if (!(testNum == 3 && framecnt == 0)) {
      if (gns == 0) {
        get_arrival_time(cur_framesmpls, stream_len, bottleneck, &BN_data);
      } else {
        get_arrival_time2(cur_framesmpls, cur_delay, &BN_data);
      }
    }

    /* packet not dropped */
    if (cur_delay != -1) {
      /* Error test number 10, garbage data */
      if (testNum == 10) {
        for (i = 0; i < static_cast<int>(stream_len); i++) {
          streamdata[i] = (short)(streamdata[i] + (short)rand());
        }
      }

      if (testNum != 9) {
        err = WebRtcIsacfix_UpdateBwEstimate(
            ISAC_main_inst, reinterpret_cast<const uint8_t*>(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(ISAC_main_inst);
          printf("\nError in decoder: %d.\n", errtype);
        }
      }

      if (readLoss == 1) {
        if (fread(&lostFrame, sizeof(int16_t), 1, plFile) != 1) {
          rewind(plFile);
        }
        lostFrame = !lostFrame;
      } else {
        lostFrame = (rand() % 100 < packetLossPercent);
      }

      /* iSAC decoding */
      if (lostFrame && framecnt > 0) {
        if (nbTest != 2) {
          declen = static_cast<int>(
              WebRtcIsacfix_DecodePlc(ISAC_main_inst, decoded, prevFrameSize));
        } else {
          declen = -1;
        }
        lostPackets++;
      } else {
        if (nbTest != 2) {
          size_t FL;
          /* Call getFramelen, only used here for function test */
          err = WebRtcIsacfix_ReadFrameLen(
              reinterpret_cast<const uint8_t*>(streamdata), stream_len, &FL);
          declen = WebRtcIsacfix_Decode(
              ISAC_main_inst, reinterpret_cast<const uint8_t*>(streamdata),
              stream_len, decoded, speechType);
          /* Error check */
          if (err < 0 || declen < 0 || FL != static_cast<size_t>(declen)) {
            errtype = WebRtcIsacfix_GetErrorCode(ISAC_main_inst);
            printf(
                "\nError %d in ReadFrameLen (%s), Decode (%s), with FL %zu and "
                "declen %d.\n",
                errtype, err < 0 ? "yes" : "no", declen < 0 ? "yes" : "no", FL,
                declen);
          }
          prevFrameSize = static_cast<size_t>(declen / 480);

        } else {
          declen = -1;
          prevFrameSize = static_cast<size_t>(declen / 240);
        }
      }

      if (declen <= 0) {
        /* exit if returned with error */
        errtype = WebRtcIsacfix_GetErrorCode(ISAC_main_inst);
        printf("\nError in decoder: %d.\n", errtype);
      }

      /* Write decoded speech frame to file */
      if (fwrite(decoded, sizeof(int16_t), declen, outp) != (size_t)declen) {
        FAIL();
      }
      //   fprintf( ratefile, "%f \n", stream_len / ( ((double)declen)/
      // ((double)FS) ) * 8 );
    } else {
      lostPackets++;
    }
    framecnt++;

    totalsmpls += declen;
    totalbits += static_cast<int>(8 * stream_len);

    /* Error test number 10, garbage data */
    if (testNum == 10) {
      if ((seedfile = fopen(SEED_FILE, "a+t")) == NULL) {
        printf("Error: Could not open file %s\n", SEED_FILE);
      } else {
        fprintf(seedfile, "ok\n\n");
        fclose(seedfile);
      }
    }
  }
  printf("\nLost Frames %d ~ %4.1f%%\n", lostPackets,
         (double)lostPackets / (double)framecnt * 100.0);
  printf("\n\ntotal bits                          = %d bits", totalbits);
  printf("\nmeasured average bitrate              = %0.3f kbits/s",
         (double)totalbits * (FS / 1000) / totalsmpls);
  printf("\n");

  /* Runtime statistics */

  runtime = (double)(((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("\n\n_______________________________________________\n");

  // Record the results with Perf test tools.
  webrtc::test::PrintResult("isac", "", "time_per_10ms_frame",
                            (runtime * 10) / length_file, "ms", false);

  if (perf_result_file) {
    EXPECT_TRUE(webrtc::test::WritePerfResults(perf_result_file));
  }

  fclose(inp);
  fclose(outp);
  fclose(outbits);

  if (testCE == 1) {
    WebRtcIsacfix_FreeInternal(ISAC_main_inst);
  }
  WebRtcIsacfix_Free(ISAC_main_inst);
}

int main(int argc, char* argv[]) {
  ::testing::InitGoogleTest(&argc, argv);
  global_argc = argc;
  global_argv = argv;

  return RUN_ALL_TESTS();
}