file1-o.txt

来自「Reference Implementation of G.711 standa」· 文本 代码 · 共 181 行

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dos.h>
#include <io.h>
#include <alloc.h>
#include "dsp16-io.h"

int             main(int argc, char *argv[])
{
  char            hexfile[100] = "resmon.hex";	/* TMS320C25 init file */
  double          rate = 8000;	/* Samplig rate, in Hz */
  char            speech_file[100];	/* Digitized speech file */
  int             errflg = 0;	/* Error flag */
  char            high_byte_1st = 0;	/* Little or Big endian */
  char            pause_before_start = 0;	/* wait user's input */
  short           play_mode = CMD15_ONCE;	/* Loop or single listening */
  long            addr;		/* Start address in DSP16+ data RAM */
  long            file_size;	/* speech file size, in bytes */
  FILE           *fx;		/* speech file structure pointer */
  int             fh;		/* speech file handler */
  short far      *bp;		/* pointer for speech data on PC RAM */
  long            nword;	/* number of 16-bit words in the speech file */
  long            tmp;

  /* Ask for options */
  while (argc > 1 && argv[1][0] == '-' && strlen(argv[1]) > 1)
    if (strcmp(argv[1], "-fs") == 0)
    {
      /* Set sampling rate */
      rate = atof(argv[2]);

      /* Update argv and argc to next argument */
      argv += 2;
      argc -= 2;
    }
    else if (strcmp(argv[1], "-c") == 0)
    {
      /* Set play mode as continuous */
      play_mode = CMD15_LOOP;

      /* Update argv and argc to next argument */
      argv++;
      argc--;
    }
    else if (strcmp(argv[1], "-1") == 0)
    {
      /* Set play mode for 1 play */
      play_mode = CMD15_ONCE;

      /* Update argv and argc to next argument */
      argv++;
      argc--;
    }
    else if (strcmp(argv[1], "-p") == 0)
    {
      /* Wait user's command to start playback */
      pause_before_start = 1;
      argv++;
      argc--;
    }
    else if (strcmp(argv[1], "-s") == 0)
    {
      /* Files are big endian - so, swap bytes, please */
      high_byte_1st = 1;
      argv++;
      argc--;
    }
    else
    {
      fprintf(stderr, "Invalid option \"%s\" in command line\n\n",
	      argv[1]);
      exit(1);
    }

  /* Get length for measurements */
  if (argc < 2 || strcmp(argv[1], "-?") == 0)
  {
    fprintf(stderr, "Usage: %s [-fs Hz] [-1] [-c] [-s] file\n", argv[0]);
    exit(1);
  }
  else
  {
    /* Read parameters for processing */
    strcpy(speech_file, argv[1]);
    fprintf(stderr, "Speech file: %s\n", speech_file);
  }

  /* Setting address of DSP-16 */
  if (DSP16_setaddress())
    return (1);

  /* Initializing DSP-16 hardware */
  if (DSP16_initialize(hexfile))
    return (2);

  /* Documenting hardware/software/firmware options */
  printf("DSP-16 Driver version %d.%d. - ", dcall.p3, dcall.p4);
  printf("%d words uploaded.\n", DWORDSUP);

  /* Setting sampling rate, with prevoius check for range */
  if ((rate <= 0.0) || (rate > 50000.0))
    rate = 50000.0;
  errflg = DSP16_samplerate(rate);
  if (errflg)
    return (1);
  printf("Sample rate set to %3.3f kHz.\n", rate / 1000.0);

  /* Open speech file */
  if ((fx = fopen(speech_file, "rb")) == NULL)
  {
    printf("Can't open file %s ... aborted\n", speech_file);
    return (1);
  }
  fh = fileno(fx);

  /* Inicializations for file */
  bp = (short far *) NULL;
  file_size = filelength(fh);

  /* Check if enough memory */
  if ((tmp = farcoreleft()) < file_size)
    return (fprintf(stderr, "Insufficient memory: %ld bytes! \n", tmp), 2);

  /* ... Allocates memory to load current file */
  if ((bp = (short far *) farmalloc((long) file_size)) == NULL)
  {
    /* Well, there was enough memory BUT allocation failed! */
    printf("Can't allocate memory for file %s", speech_file);
    fclose(fx);
    return (1);
  }

  /* Load file into the PC memory */
  fprintf(stderr, "Loading sampled data in PC's RAM\r");
  nword = load_big_buffer(fh, bp, file_size) / 2;
  fclose(fx);

  /* Swap bytes when requested */
  if (high_byte_1st)
    swap_byte((char far *) bp, 2 * nword);

  /* Send next speech material to DSP16 */
  addr = 0;
  fprintf(stderr, "Sending sampled data to DSP16's RAM\r");
  send_big_block(bp, (long) file_size, &addr);

  /* Clear line */
  clreol();

  /* Pause, if requested */
  if (pause_before_start)
  {
    fprintf(stderr, "Hit ENTER to start listening ... ");
    (void) getch();
    fprintf(stderr, "\r");
    clreol();
  }

  /* Send order to start playback */
  if (start_playback(nword, play_mode) == 0)
    return (1);

  /* Display info */
  if (play_mode == CMD15_LOOP)
    fprintf(stderr, "Hit 'S' to stop listening! ... ");

  /* Free memory */
  farfree(bp);

  /* Wait until the current file ends its playback */
  wait_eop_or_esc();

  /* Resets DSP16 */
  DSP16_resetTMS();

  /* Put DSP16 back into the initial state and quit */
  errflg = DSP16_initialize(hexfile);
  return (errflg ? 1 : 0);
}