Jayaprasad T J
Created May 27, 2022

Smart Baby Monitor

An intelligent baby monitoring system with "Baby cry detection".

24
Smart Baby Monitor

Things used in this project

Hardware components

Microphone, Omnidirectional
Microphone, Omnidirectional
×1
Flash Memory Card, SD Card
Flash Memory Card, SD Card
×1

Software apps and online services

Edge Impulse Studio
Edge Impulse Studio

Story

Read more

Schematics

Schematics

Connect the microphones and resistors to the extension board according to the schematics. We will use electret condenser-based microphones which require a bias voltage on the input line, and to supply this some resistors are needed:

Code

main.cxx

C/C++
Main file handling the audio capture and invoking baby cry detection apis
/****************************************************************************
 * audio_pcm_capture/pcm_capture_main.cxx
 *
 *   Copyright 2019 Sony Semiconductor Solutions Corporation
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
 *    the names of its contributors may be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>
#include <stdio.h>
#include <strings.h>
#include <asmp/mpshm.h>
#include "memutils/simple_fifo/CMN_SimpleFifo.h"
#include "memutils/memory_manager/MemHandle.h"
#include "memutils/message/Message.h"
#include "audio/audio_high_level_api.h"
#include "audio/utilities/frame_samples.h"
#include "include/msgq_id.h"
#include "include/mem_layout.h"
#include "include/memory_layout.h"
#include "include/msgq_pool.h"
#include "include/pool_layout.h"
#include "include/fixed_fence.h"

#include "stdlib.h"
#include "api.h"
#include "baby_cry_model.h"
#include "baby_cry_keyword.h"

baby_cry_Struct *st;
baby_cry_ApiResult result;

/****************************************************************************
 * Codec parameters
 ****************************************************************************/

/* Recording default time(sec). */
#define PCM_CAPTURE_TIME (10)

/* Sampling rate
 * 16kHz : AS_SAMPLINGRATE_16000
 * 44.1kHz : AS_SAMPLINGRATE_44100
 * 48kHz   : AS_SAMPLINGRATE_48000
 * 192kHz  : AS_SAMPLINGRATE_192000
 */
#define SAMPLINGRATE AS_SAMPLINGRATE_16000

#define CHANNEL_NUMBER AS_CHANNEL_MONO

/* Bit length
 * 16bit : AS_BITLENGTH_16
 * 24bit : AS_BITLENGTH_24
 */
#define BIT_LENGTH AS_BITLENGTH_16

/* Use microphone channel number.
 *   [Analog microphone]
 *       Maximum number: 4
 *       The channel number is 1/2/4
 *   [Digital microphone]
 *       Maximum number: 8
 *       The channel number is 1/2/4/6/8
 */
#define USE_MIC_CHANNEL_NUM (1)

/* Set the PCM buffer size. */
#define READ_SIMPLE_FIFO_SIZE (160 * USE_MIC_CHANNEL_NUM * 2) /* 160 sample, 4ch, 16bit */
#define SIMPLE_FIFO_FRAME_NUM (60)

/****************************************************************************
 * PCM capture function
 ****************************************************************************/

/*
 * Audio signal process (Modify for your application)
 *
 * [in] buf   capture data
 * [in] size  capture size
 *
 */

static void app_pcm_output(uint8_t *buf, uint32_t size)
{
  int status = 0;

  /* Sample code.
   * Please modify according to the application.
   * For example, output capture data.
   */

  /* printf("Size %d [%02x %02x %02x %02x %02x %02x %02x %02x...]\n",
         size,
         buf[0],
         buf[1],
         buf[2],
         buf[3],
         buf[4],
         buf[5],
         buf[6],
         buf[7]); */

  status = api_process(st, (int16_t*)buf, &result);
  switch (status)
  {
  case BABY_CRY_API_VAD_DONE:
    if (result.activity_index == VAD_VOICE_ACTIVITY_IDX)
    {
    }
    break;
  case BABY_CRY_API_KEYWORD_DONE:
    printf("{\"Keyword\":\"%s\", \"confidence_score\":%.2f}\r\n", output_class[result.activity_index], result.confidence_score);
#ifdef DO_CYCLE_COUNT
    printf("Cycle count = %d \r\n", SysCntVal);
#endif
    break;
  case BABY_CRY_API_WAKEWD_DONE:
    //printf("{\"Wakeword\":\"%s\", \"confidence_score\":%.2f}\r\n", waked_output_class[result.activity_index], result.confidence_score);

    break;
  }
}

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/
using namespace MemMgrLite;

/* PCM codec search path. */
#define DSPBIN_PATH "/mnt/sd0/BIN"

/* Section number of memory layout to use */
#define AUDIO_SECTION SECTION_NO0

/* PCM FIFO buffer size */
#define SIMPLE_FIFO_BUF_SIZE (READ_SIMPLE_FIFO_SIZE * SIMPLE_FIFO_FRAME_NUM)

/****************************************************************************
 * Private Function Prototypes
 ****************************************************************************/

/****************************************************************************
 * Private Type Declarations
 ****************************************************************************/

/* For FIFO. */
struct fifo_info_s
{
  CMN_SimpleFifoHandle handle;
  AsRecorderOutputDeviceHdlr output_device;
  uint32_t fifo_area[SIMPLE_FIFO_BUF_SIZE / sizeof(uint32_t)];
  uint8_t write_buf[READ_SIMPLE_FIFO_SIZE];
};

/****************************************************************************
 * Private Data
 ****************************************************************************/

/* For FIFO. */
static fifo_info_s s_fifo;

/* For share memory. */
static mpshm_t s_shm;

/* For target codec parameters. */
static uint32_t target_samplingrate = SAMPLINGRATE;
static uint32_t target_channel_number = CHANNEL_NUMBER;
static uint32_t target_bit_lengt = BIT_LENGTH;
static uint32_t target_recording_time = PCM_CAPTURE_TIME;

/****************************************************************************
 * Private Functions
 ****************************************************************************/
static void outputDeviceCallback(uint32_t size)
{
  /* do nothing */
}

static bool app_init_simple_fifo(void)
{
  if (CMN_SimpleFifoInitialize(&s_fifo.handle,
                               s_fifo.fifo_area,
                               SIMPLE_FIFO_BUF_SIZE, NULL) != 0)
  {
    printf("Error: Fail to initialize simple FIFO.");
    return false;
  }
  CMN_SimpleFifoClear(&s_fifo.handle);

  s_fifo.output_device.simple_fifo_handler =
      (void *)(&s_fifo.handle);
  s_fifo.output_device.callback_function = outputDeviceCallback;

  return true;
}

static void app_pop_simple_fifo(bool is_end_process = false)
{
  size_t occupied_simple_fifo_size =
      CMN_SimpleFifoGetOccupiedSize(&s_fifo.handle);
  uint32_t output_size = 0;

  while (occupied_simple_fifo_size > 0)
  {
    output_size = (occupied_simple_fifo_size > READ_SIMPLE_FIFO_SIZE) ? READ_SIMPLE_FIFO_SIZE : occupied_simple_fifo_size;
    if (CMN_SimpleFifoPoll(&s_fifo.handle,
                           (void *)s_fifo.write_buf,
                           output_size) == 0)
    {
      printf("ERROR: Fail to get data from simple FIFO.\n");
      break;
    }

    /* Data output */
    app_pcm_output((uint8_t *)s_fifo.write_buf, output_size);

    if (is_end_process)
    {
      /* At end processing, all remaining data is spit */

      occupied_simple_fifo_size = CMN_SimpleFifoGetOccupiedSize(&s_fifo.handle);
    }
    else
    {
      occupied_simple_fifo_size -= output_size;
    }
  }
}

static bool printAudCmdResult(uint8_t command_code, AudioResult &result)
{
  if (AUDRLT_ERRORRESPONSE == result.header.result_code)
  {
    printf("Command code(0x%x): AUDRLT_ERRORRESPONSE:"
           "Module id(0x%x): Error code(0x%x)\n",
           command_code,
           result.error_response_param.module_id,
           result.error_response_param.error_code);
    return false;
  }
  else if (AUDRLT_ERRORATTENTION == result.header.result_code)
  {
    printf("Command code(0x%x): AUDRLT_ERRORATTENTION\n", command_code);
    return false;
  }
  return true;
}

static void app_attention_callback(const ErrorAttentionParam *attparam)
{
  printf("Attention!! %s L%d ecode %d subcode %d\n",
         attparam->error_filename,
         attparam->line_number,
         attparam->error_code,
         attparam->error_att_sub_code);
}

static bool app_create_audio_sub_system(void)
{
  bool result = false;

  /* Create manager of AudioSubSystem. */

  AudioSubSystemIDs ids;
  ids.app = MSGQ_AUD_APP;
  ids.mng = MSGQ_AUD_MGR;
  ids.player_main = 0xFF;
  ids.player_sub = 0xFF;
  ids.micfrontend = MSGQ_AUD_FRONTEND;
  ids.mixer = 0xFF;
  ids.recorder = MSGQ_AUD_RECORDER;
  ids.effector = 0xFF;
  ids.recognizer = 0xFF;

  AS_CreateAudioManager(ids, app_attention_callback);

  /* Create Frontend. */

  AsCreateMicFrontendParams_t frontend_create_param;
  frontend_create_param.msgq_id.micfrontend = MSGQ_AUD_FRONTEND;
  frontend_create_param.msgq_id.mng = MSGQ_AUD_MGR;
  frontend_create_param.msgq_id.dsp = MSGQ_AUD_PREDSP;
  frontend_create_param.pool_id.input = S0_INPUT_BUF_POOL;
  frontend_create_param.pool_id.output = S0_NULL_POOL;
  frontend_create_param.pool_id.dsp = S0_PRE_APU_CMD_POOL;

  AS_CreateMicFrontend(&frontend_create_param, NULL);

  /* Create Recorder. */

  AsCreateRecorderParams_t recorder_create_param;
  recorder_create_param.msgq_id.recorder = MSGQ_AUD_RECORDER;
  recorder_create_param.msgq_id.mng = MSGQ_AUD_MGR;
  recorder_create_param.msgq_id.dsp = MSGQ_AUD_DSP;
  recorder_create_param.pool_id.input = S0_INPUT_BUF_POOL;
  recorder_create_param.pool_id.output = S0_ES_BUF_POOL;
  recorder_create_param.pool_id.dsp = S0_ENC_APU_CMD_POOL;

  result = AS_CreateMediaRecorder(&recorder_create_param, NULL);
  if (!result)
  {
    printf("Error: AS_CreateMediaRecorder() failure. system memory insufficient!\n");
    return false;
  }

  /* Create Capture feature. */

  AsCreateCaptureParam_t capture_create_param;
  capture_create_param.msgq_id.dev0_req = MSGQ_AUD_CAP;
  capture_create_param.msgq_id.dev0_sync = MSGQ_AUD_CAP_SYNC;
  capture_create_param.msgq_id.dev1_req = 0xFF;
  capture_create_param.msgq_id.dev1_sync = 0xFF;

  result = AS_CreateCapture(&capture_create_param);
  if (!result)
  {
    printf("Error: As_CreateCapture() failure. system memory insufficient!\n");
    return false;
  }

  return true;
}

static void app_deact_audio_sub_system(void)
{
  AS_DeleteAudioManager();
  AS_DeleteMediaRecorder();
  AS_DeleteMicFrontend();
  AS_DeleteCapture();
}

static bool app_power_on(void)
{
  AudioCommand command;
  command.header.packet_length = LENGTH_POWERON;
  command.header.command_code = AUDCMD_POWERON;
  command.header.sub_code = 0x00;
  command.power_on_param.enable_sound_effect = AS_DISABLE_SOUNDEFFECT;
  AS_SendAudioCommand(&command);

  AudioResult result;
  AS_ReceiveAudioResult(&result);
  return printAudCmdResult(command.header.command_code, result);
}

static bool app_power_off(void)
{
  AudioCommand command;
  command.header.packet_length = LENGTH_SET_POWEROFF_STATUS;
  command.header.command_code = AUDCMD_SETPOWEROFFSTATUS;
  command.header.sub_code = 0x00;
  AS_SendAudioCommand(&command);

  AudioResult result;
  AS_ReceiveAudioResult(&result);
  return printAudCmdResult(command.header.command_code, result);
}

static bool app_set_ready(void)
{
  AudioCommand command;
  command.header.packet_length = LENGTH_SET_READY_STATUS;
  command.header.command_code = AUDCMD_SETREADYSTATUS;
  command.header.sub_code = 0x00;
  AS_SendAudioCommand(&command);

  AudioResult result;
  AS_ReceiveAudioResult(&result);
  return printAudCmdResult(command.header.command_code, result);
}

static bool app_init_mic_gain(void)
{
  AudioCommand command;
  command.header.packet_length = LENGTH_INITMICGAIN;
  command.header.command_code = AUDCMD_INITMICGAIN;
  command.header.sub_code = 0;
  command.init_mic_gain_param.mic_gain[0] = 0;
  command.init_mic_gain_param.mic_gain[1] = 0;
  command.init_mic_gain_param.mic_gain[2] = 0;
  command.init_mic_gain_param.mic_gain[3] = 0;
  command.init_mic_gain_param.mic_gain[4] = 0;
  command.init_mic_gain_param.mic_gain[5] = 0;
  command.init_mic_gain_param.mic_gain[6] = 0;
  command.init_mic_gain_param.mic_gain[7] = 0;
  AS_SendAudioCommand(&command);

  AudioResult result;
  AS_ReceiveAudioResult(&result);
  return printAudCmdResult(command.header.command_code, result);
}

static bool app_set_recorder_status(void)
{
  AudioCommand command;
  command.header.packet_length = LENGTH_SET_RECORDER_STATUS;
  command.header.command_code = AUDCMD_SETRECORDERSTATUS;
  command.header.sub_code = 0x00;
  command.set_recorder_status_param.input_device = AS_SETRECDR_STS_INPUTDEVICE_MIC;
  command.set_recorder_status_param.input_device_handler = 0x00;
  command.set_recorder_status_param.output_device = AS_SETRECDR_STS_OUTPUTDEVICE_RAM;
  command.set_recorder_status_param.output_device_handler = &s_fifo.output_device;
  AS_SendAudioCommand(&command);

  AudioResult result;
  AS_ReceiveAudioResult(&result);
  return printAudCmdResult(command.header.command_code, result);
}

static bool app_init_micfrontend(void)
{
  AudioCommand command;
  command.header.packet_length = LENGTH_INIT_MICFRONTEND;
  command.header.command_code = AUDCMD_INIT_MICFRONTEND;
  command.header.sub_code = 0x00;
  command.init_micfrontend_param.ch_num = target_channel_number;
  command.init_micfrontend_param.bit_length = target_bit_lengt;
  command.init_micfrontend_param.samples = getCapSampleNumPerFrame(AS_CODECTYPE_LPCM,
                                                                   target_samplingrate);
  command.init_micfrontend_param.preproc_type = AsMicFrontendPreProcThrough;
  snprintf(command.init_micfrontend_param.preprocess_dsp_path,
           AS_PREPROCESS_FILE_PATH_LEN,
           "%s", "/mnt/sd0/BIN/PREPROC");
  command.init_micfrontend_param.data_dest = AsMicFrontendDataToRecorder;
  AS_SendAudioCommand(&command);

  AudioResult result;
  AS_ReceiveAudioResult(&result);
  return printAudCmdResult(command.header.command_code, result);
}

static bool app_init_recorder(void)
{
  AudioCommand command;
  command.header.packet_length = LENGTH_INIT_RECORDER;
  command.header.command_code = AUDCMD_INITREC;
  command.header.sub_code = 0x00;

  command.recorder.init_param.sampling_rate = target_samplingrate;
  command.recorder.init_param.channel_number = target_channel_number;
  command.recorder.init_param.bit_length = target_bit_lengt;
  command.recorder.init_param.codec_type = AS_CODECTYPE_LPCM;

  snprintf(command.recorder.init_param.dsp_path, AS_AUDIO_DSP_PATH_LEN, "%s", DSPBIN_PATH);

  AS_SendAudioCommand(&command);

  AudioResult result;
  AS_ReceiveAudioResult(&result);
  return printAudCmdResult(command.header.command_code, result);
}

static bool app_start_recorder(void)
{
  CMN_SimpleFifoClear(&s_fifo.handle);

  AudioCommand command;
  command.header.packet_length = LENGTH_START_RECORDER;
  command.header.command_code = AUDCMD_STARTREC;
  command.header.sub_code = 0x00;
  AS_SendAudioCommand(&command);

  AudioResult result;
  AS_ReceiveAudioResult(&result);
  return printAudCmdResult(command.header.command_code, result);
}

static bool app_stop_recorder(void)
{
  AudioCommand command;
  command.header.packet_length = LENGTH_STOP_RECORDER;
  command.header.command_code = AUDCMD_STOPREC;
  command.header.sub_code = 0x00;
  AS_SendAudioCommand(&command);

  AudioResult result;
  AS_ReceiveAudioResult(&result);
  if (!printAudCmdResult(command.header.command_code, result))
  {
    return false;
  }

  /* Spout processing of remaining data. */

  app_pop_simple_fifo(true);

  return true;
}

static bool app_set_clkmode(void)
{
  cxd56_audio_clkmode_t clk_mode;

  if (target_samplingrate == AS_SAMPLINGRATE_192000)
  {
    clk_mode = CXD56_AUDIO_CLKMODE_HIRES;
  }
  else
  {
    clk_mode = CXD56_AUDIO_CLKMODE_NORMAL;
  }

  AudioCommand command;
  command.header.packet_length = LENGTH_SETRENDERINGCLK;
  command.header.command_code = AUDCMD_SETRENDERINGCLK;
  command.header.sub_code = 0x00;
  command.set_renderingclk_param.clk_mode = clk_mode;
  AS_SendAudioCommand(&command);

  AudioResult result;
  AS_ReceiveAudioResult(&result);
  return printAudCmdResult(command.header.command_code, result);
}

static bool app_init_libraries(void)
{
  int ret;
  uint32_t addr = AUD_SRAM_ADDR;

  /* Initialize shared memory.*/

  ret = mpshm_init(&s_shm, 1, 1024 * 128 * 2);
  if (ret < 0)
  {
    printf("Error: mpshm_init() failure. %d\n", ret);
    return false;
  }

  ret = mpshm_remap(&s_shm, (void *)addr);
  if (ret < 0)
  {
    printf("Error: mpshm_remap() failure. %d\n", ret);
    return false;
  }

  /* Initalize MessageLib. */

  err_t err = MsgLib::initFirst(NUM_MSGQ_POOLS, MSGQ_TOP_DRM);
  if (err != ERR_OK)
  {
    printf("Error: MsgLib::initFirst() failure. 0x%x\n", err);
    return false;
  }

  err = MsgLib::initPerCpu();
  if (err != ERR_OK)
  {
    printf("Error: MsgLib::initPerCpu() failure. 0x%x\n", err);
    return false;
  }

  void *mml_data_area = translatePoolAddrToVa(MEMMGR_DATA_AREA_ADDR);
  err = Manager::initFirst(mml_data_area, MEMMGR_DATA_AREA_SIZE);
  if (err != ERR_OK)
  {
    printf("Error: Manager::initFirst() failure. 0x%x\n", err);
    return false;
  }

  err = Manager::initPerCpu(mml_data_area, static_pools, pool_num, layout_no);
  if (err != ERR_OK)
  {
    printf("Error: Manager::initPerCpu() failure. 0x%x\n", err);
    return false;
  }

  /* Create static memory pool of VoiceCall. */

  const uint8_t sec_no = AUDIO_SECTION;
  const NumLayout layout_no = MEM_LAYOUT_PCM_CAPTURE;
  void *work_va = translatePoolAddrToVa(S0_MEMMGR_WORK_AREA_ADDR);
  const PoolSectionAttr *ptr = &MemoryPoolLayouts[AUDIO_SECTION][layout_no][0];
  err = Manager::createStaticPools(sec_no,
                                   layout_no,
                                   work_va,
                                   S0_MEMMGR_WORK_AREA_SIZE,
                                   ptr);
  if (err != ERR_OK)
  {
    printf("Error: Manager::createStaticPools() failure. %d\n", err);
    return false;
  }

  return true;
}

static bool app_finalize_libraries(void)
{
  /* Finalize MessageLib. */

  MsgLib::finalize();

  /* Destroy static pools. */

  MemMgrLite::Manager::destroyStaticPools(AUDIO_SECTION);

  /* Finalize memory manager. */

  MemMgrLite::Manager::finalize();

  /* Destroy shared memory. */

  int ret;
  ret = mpshm_detach(&s_shm);
  if (ret < 0)
  {
    printf("Error: mpshm_detach() failure. %d\n", ret);
    return false;
  }

  ret = mpshm_destroy(&s_shm);
  if (ret < 0)
  {
    printf("Error: mpshm_destroy() failure. %d\n", ret);
    return false;
  }

  return true;
}

void app_recorde_process(uint32_t rec_time)
{
  /* Timer Start */

/*   time_t start_time;
  time_t cur_time;

  time(&start_time);

  do
  {
    app_pop_simple_fifo();

  } while ((time(&cur_time) - start_time) < rec_time); */

  while(1)
  {
    app_pop_simple_fifo();
  }
}

static bool app_argparse(int argc, char *argv[])
{
  struct
  {
    const char *target;
    uint32_t *param;
    uint32_t target_param;
    const char *help;
  } nodes[] = {
      {"16k", &target_samplingrate, AS_SAMPLINGRATE_16000, "Sampling rate   16kHz"},
      {"48k", &target_samplingrate, AS_SAMPLINGRATE_48000, "Sampling rate   48kHz"},
      {"192k", &target_samplingrate, AS_SAMPLINGRATE_192000, "Sampling rate  192kHz"},
      {"1ch", &target_channel_number, AS_CHANNEL_MONO, "Channel number 1ch(MONO)"},
      {"2ch", &target_channel_number, AS_CHANNEL_STEREO, "Channel number 2ch(STEREO)"},
      {"4ch", &target_channel_number, AS_CHANNEL_4CH, "Channel number 4ch"},
      {"16b", &target_bit_lengt, AS_BITLENGTH_16, "Bit length     16bit"},
      {"24b", &target_bit_lengt, AS_BITLENGTH_24, "Bit length     24bit"},
      {NULL, NULL, 0, NULL},
  },
    *p_node;

  /* Set default parameter. */

  target_samplingrate = SAMPLINGRATE;
  target_channel_number = CHANNEL_NUMBER;
  target_bit_lengt = BIT_LENGTH;
  target_recording_time = PCM_CAPTURE_TIME;

  if (argc < 2)
  {
    /* Default configuration */

    return true;
  }

  /* Help! Display Description */

  if (strcmp(argv[1], "help") == 0)
  {
    printf("\n");

    for (p_node = nodes; p_node->target; p_node++)
    {
      printf("%-4s - %s\n", p_node->target, p_node->help);
    }
    printf("1... - recording time (sec)\n\n");

    return false;
  }

  /* Option determination */

  else
  {
    for (int i = 1; i < argc; i++)
    {
      for (p_node = nodes; p_node->target; p_node++)
      {
        if (strncasecmp(p_node->target, argv[i], strlen(p_node->target)) == 0)
        {
          if (p_node->param)
          {
            *p_node->param = p_node->target_param;
          }
          break;
        }
      }

      /* When there is no option entered. */

      if (p_node->target == NULL)
      {
        /* Numerical judgment */

        int time = atoi(argv[i]);

        if (time > 0)
        {
          target_recording_time = time;
        }
        else
        {
          printf("\nInvalid option '%s'\n", argv[i]);
          printf("Try '%s help' for more information.\n\n", argv[0]);
        }
      }
    }
  }

  return true;
}

static const char *app_param_to_str(int id, uint32_t param)
{
  struct
  {
    int id;
    uint32_t param;
    const char *title;
  } nodes[] = {
      {-1, AS_SAMPLINGRATE_16000, "16kHz"},
      {-1, AS_SAMPLINGRATE_48000, "48kHz"},
      {-1, AS_SAMPLINGRATE_192000, "192kHz"},
      {-2, AS_CHANNEL_MONO, "1ch(MONO)"},
      {-2, AS_CHANNEL_STEREO, "2ch(STEREO)"},
      {-2, AS_CHANNEL_4CH, "4ch"},
      {-3, AS_BITLENGTH_16, "16bit"},
      {-3, AS_BITLENGTH_24, "24bit"},
      {0, 0, "!!! Undefined value !!!"},
  },
    *p_node;

  for (p_node = nodes; p_node->id; p_node++)
  {
    if (p_node->id == id && p_node->param == param)
    {
      break;
    }
  }

  return p_node->title;
}

static void app_disp_codec_params(void)
{
  printf("\n");
  printf("Sampling rate  %s\n", app_param_to_str(-1, target_samplingrate));
  printf("Channel number %s\n", app_param_to_str(-2, target_channel_number));
  printf("Bit length     %s\n", app_param_to_str(-3, target_bit_lengt));
  printf("\n");
}

void init_baby_cry_VCE(void)
{
/*Initialize the baby cry VCE model*/
#ifdef WAKEWORD_SUPPORT
  int32_t size = api_getsizeof((baby_cry_VCEModel *)&baby_cry_model[0], (baby_cry_VCEModel *)&wakewd_model[0]);
#else
  int32_t size = api_getsizeof((baby_cry_VCEModel *)&baby_cry_model[0], NULL);
#endif

  printf("Total memory required : %d bytes\n", size);
  char *pBuf = (char *)malloc(size);
  if (!pBuf)
  {
    printf("baby Cry API instance creation failed\n");
    return;
  }

#ifdef WAKEWORD_SUPPORT
  st = api_create(pBuf, (baby_cry_VCEModel *)&baby_cry_model[0], (baby_cry_VCEModel *)&wakewd_model[0]);
#else
  st = api_create(pBuf, (baby_cry_VCEModel *)&baby_cry_model[0], NULL);
#endif

  api_set_confidence_level(st, 0.1);
  api_enable_vad_process(st, 1);
}

/****************************************************************************
 * Public function
 ****************************************************************************/
extern "C" int myApps_main(int argc, FAR char *argv[])
{
  /* Command line argument analysis */
  if (!app_argparse(argc, argv))
  {
    goto errout;
  }

  printf("Baby cry Project Demo !!\n");
  
  /* Initialize baby cry VCE parameters */
  init_baby_cry_VCE(); 

  /* Show codec parameters */
  app_disp_codec_params();
z
  /* First, initialize the shared memory and memory utility used by AudioSubSystem. */
  if (!app_init_libraries())
  {
    printf("Error: init_libraries() failure.\n");
    goto errout;
  }

  /* Next, Create the features used by AudioSubSystem. */
  if (!app_create_audio_sub_system())
  {
    printf("Error: act_audiosubsystem() failure.\n");
    goto errout_create_audio_sub_system;
  }

  /* On and after this point, AudioSubSystem must be active.
   * Register the callback function to be notified when a problem occurs.
   */

  /* Change AudioSubsystem to Ready state so that I/O parameters can be changed. */
  if (!app_power_on())
  {
    printf("Error: app_power_on() failure.\n");
    goto errout_power_on;
  }

  /* Initialize simple fifo. */
  if (!app_init_simple_fifo())
  {
    printf("Error: app_init_simple_fifo() failure.\n");
    goto errout_init_simple_fifo;
  }

  /* Set the initial gain of the microphone to be used. */
  if (!app_init_mic_gain())
  {
    printf("Error: app_init_mic_gain() failure.\n");
    goto errout_init_simple_fifo;
  }

  /* Set audio clock mode. */
  if (!app_set_clkmode())
  {
    printf("Error: app_set_clkmode() failure.\n");
    goto errout_init_simple_fifo;
  }

  /* Set recorder operation mode. */
  if (!app_set_recorder_status())
  {
    printf("Error: app_set_recorder_status() failure.\n");
    goto errout_init_simple_fifo;
  }

  /* Initialize recorder. */
  if (!app_init_recorder())
  {
    printf("Error: app_init_recorder() failure.\n");
    goto errout_init_recorder;
  }

  /* Initialize MicFrontend. */
  if (!app_init_micfrontend())
  {
    printf("Error: app_init_micfrontend() failure.\n");
    goto errout_init_recorder;
  }

  /* Start recorder operation. */
  if (!app_start_recorder())
  {
    printf("Error: app_start_recorder() failure.\n");
  }
  else
  {
    /* Running... */
    //printf("Running time is %d sec\n", target_recording_time);

    app_recorde_process(target_recording_time);

    /* Stop recorder operation. */
    if (!app_stop_recorder())
    {
      printf("Error: app_stop_recorder() failure.\n");

      /* To end processing */
    }
  }

errout_init_recorder:

  /* Return the state of AudioSubSystem before voice_call operation. */
  if (!app_set_ready())
  {
    printf("Error: app_set_ready() failure.\n");

    /* To end processing */
  }

errout_init_simple_fifo:

  /* Change AudioSubsystem to PowerOff state. */
  if (!app_power_off())
  {
    printf("Error: app_power_off() failure.\n");

    /* To end processing */
  }

errout_power_on:

  /* Deactivate the features used by AudioSubSystem. */
  app_deact_audio_sub_system();

errout_create_audio_sub_system:

  /* finalize the shared memory and memory utility used by AudioSubSystem. */
  if (!app_finalize_libraries())
  {
    printf("Error: finalize_libraries() failure.\n");
  }

errout:

  printf("Exit PCM capture example\n");

  return 0;
}

Credits

Jayaprasad T J

Jayaprasad T J

1 project • 0 followers

Comments