record.c

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/*
 * Copyright (c) 1991-2006 Kawahara Lab., Kyoto University
 * Copyright (c) 2000-2005 Shikano Lab., Nara Institute of Science and Technology
 * Copyright (c) 2005-2006 Julius project team, Nagoya Institute of Technology, Nagoya Institute of Technology
 * All rights reserved
 */

#include <julius.h>
#include <time.h>

#define TSTRLEN 18              

static char tstr[TSTRLEN];      
static char recfilename[MAXLINELEN]; 
static char finalfilename[MAXLINELEN]; 
static FILE *fp = NULL;         
static int totalnum;            

static void
timestring(char *t, int maxlen)
{
  time_t timep;
  struct tm *lmtm;

  time(&timep);
  lmtm = localtime(&timep);

  snprintf ( t, maxlen,"%04d.%02d%02d.%02d%02d%02d", 1900+lmtm->tm_year, 1+lmtm->tm_mon, lmtm->tm_mday, lmtm->tm_hour, lmtm->tm_min, lmtm->tm_sec);
}

static void
make_record_filename(char *buf, int buflen, char *filename)
{
  if (record_dirname == NULL) {
    j_error("no record directory specified??\n");
  }
  snprintf(buf, buflen,
#if defined(_WIN32) && !defined(__CYGWIN32__)
           "%s\\%s.wav"
#else
           "%s/%s.wav"
#endif
           , record_dirname, filename);
}

static void
make_tmp_filename(char *buf, int buflen)
{
#if defined(_WIN32) && !defined(__CYGWIN32__)
  snprintf(buf, buflen, "%s\\tmprecord.000", record_dirname);
#else
  snprintf(buf, buflen, "%s/tmprecord.%d", record_dirname, getpid());
#endif
}  

void
record_sample_open()
{
  if (fp != NULL) {
    j_error("Error: record_sample_open: re-opened before closed!\n");
  }
  make_tmp_filename(recfilename, MAXLINELEN);
  if ((fp = wrwav_open(recfilename, smpFreq)) == NULL) {
    perror("Error: record_sample_open");
    j_error("failed to open \"%s\" (temporary record file)\n", recfilename);
  }

  totalnum = 0;
}

void
record_sample_write(SP16 *speech, int samplenum)
{
  if (fp == NULL) {
    j_error("Error: record_sample_write; file not opened yet, cannot write!\n");
  }

  if (wrwav_data(fp, speech, samplenum) == FALSE) {
    perror("Error: record_sample_write");
    j_error("failed to write samples to \"%s\"\n", recfilename);
  }

  /* make timestamp of system time when an input begins */
  /* the current temporal recording file will be renamed to this time-stamp filename */
  if (totalnum == 0) {          /* beginning of recording */
    timestring(tstr, TSTRLEN);
  }
  
  totalnum += samplenum;
}

void
record_sample_close()
{
  if (fp == NULL) {
    j_printerr("Warning: record_sample_close; file not opened yet!?\n");
    return;
  }

  if (wrwav_close(fp) == FALSE) {
    perror("Error: record_sample_close");
  }
  fp = NULL;

  if (totalnum == 0) {
    unlink(recfilename);
    if (verbose_flag) {
      j_printerr("No input, not recorded\n");
    }
    return;
  }

  /* now rename the temporary file to time-stamp filename */
  make_record_filename(finalfilename, MAXLINELEN, tstr);
  if (rename(recfilename, finalfilename) < 0) {
    perror("Error: record_sample_close");
    j_error("failed to move %s to %s\n", recfilename, finalfilename);
  }
  if (verbose_flag) {
    j_printerr("recorded to \"%s\" (%d bytes, %.2f sec.)\n", finalfilename, totalnum * sizeof(SP16), (float)totalnum / (float) smpFreq);
  }
}

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