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#include <config.h>
#include "proto.h"
#include <stdio.h>
#include <fcntl.h>
#include <useconfig.h>
#include "getargs.h"
#include "l2u.h"
#include "hplay.h"
#include "file.h"
#define SUN_MAGIC 0x2e736e64 /* Really '.snd' */
#define SUN_HDRSIZE 24 /* Size of minimal header */
#define SUN_UNSPEC ((unsigned)(~0)) /* Unspecified data size */
#define SUN_ULAW 1 /* u-law encoding */
#define SUN_LIN_8 2 /* Linear 8 bits */
#define SUN_LIN_16 3 /* Linear 16 bits */
file_write_p file_write = NULL;
file_term_p file_term = NULL;
static char *linear_file;
static char *au_file;
static int au_fd = -1; /* file descriptor for .au ulaw file */
static int linear_fd = -1;
static unsigned au_encoding = SUN_ULAW;
static unsigned au_size = 0;
static void wblong PROTO((int fd, unsigned long x));
static void
wblong(fd, x)
int fd;
unsigned long x;
{
int i;
for (i = 24; i >= 0; i -= 8)
{
char byte = (char) ((x >> i) & 0xFF);
write(fd, &byte, 1);
}
}
extern void au_header PROTO((int fd,unsigned enc,unsigned rate,unsigned size,char *comment));
void
au_header(fd, enc, rate, size, comment)
int fd;
unsigned enc;
unsigned rate;
unsigned size;
char *comment;
{
if (!comment)
comment = "";
wblong(fd, SUN_MAGIC);
wblong(fd, SUN_HDRSIZE + strlen(comment));
wblong(fd, size);
wblong(fd, enc);
wblong(fd, rate);
wblong(fd, 1); /* channels */
write(fd, comment, strlen(comment));
}
static void aufile_write PROTO((int n,short *data));
static void
aufile_write(n, data)
int n;
short *data;
{
if (n > 0)
{
if (linear_fd >= 0)
{
unsigned size = n * sizeof(short);
if (write(linear_fd, data, n * sizeof(short)) != size)
perror("write");
}
if (au_fd >= 0)
{
if (au_encoding == SUN_LIN_16)
{
unsigned size = n * sizeof(short);
if (write(au_fd, data, size) != size)
perror("write");
else
au_size += size;
}
else if (au_encoding == SUN_ULAW)
{
unsigned char *plabuf = (unsigned char *) malloc(n);
if (plabuf)
{
unsigned char *p = plabuf;
unsigned char *e = p + n;
while (p < e)
{
*p++ = short2ulaw(*data++);
}
if (write(au_fd, plabuf, n) != n)
perror(au_file);
else
au_size += n;
free(plabuf);
}
else
{
fprintf(stderr, "%s : No memory for ulaw data\n", program);
}
}
else
{
abort();
}
}
}
}
static void aufile_term PROTO((void));
static void
aufile_term()
{
/* Finish ulaw file */
if (au_fd >= 0)
{
off_t here = lseek(au_fd, 0L, SEEK_CUR);
if (here >= 0)
{
/* can seek this file - truncate it */
ftruncate(au_fd, here);
/* Now go back and overwite header with actual size */
if (lseek(au_fd, 8L, SEEK_SET) == 8)
{
wblong(au_fd, au_size);
}
}
if (au_fd != 1)
close(au_fd);
au_fd = -1;
}
/* Finish linear file */
if (linear_fd >= 0)
{
ftruncate(linear_fd, lseek(linear_fd, 0L, SEEK_CUR));
if (linear_fd != 1)
close(linear_fd);
linear_fd = -1;
}
}
int
file_init(argc, argv)
int argc;
char *argv[];
{
argc = getargs("File output", argc, argv,
"l", "", &linear_file, "Raw 16-bit linear pathname",
"o", "", &au_file, "Sun/Next audio file name",
NULL);
if (help_only)
return argc;
if (au_file)
{
if (strcmp(au_file, "-") == 0)
{
au_fd = 1; /* stdout */
}
else
{
au_fd = open(au_file, O_WRONLY | O_CREAT | O_TRUNC, 0666);
if (au_fd < 0)
perror(au_file);
}
if (au_fd >= 0)
{
if (samp_rate > 8000)
au_encoding = SUN_LIN_16;
else
au_encoding = SUN_ULAW;
au_header(au_fd, au_encoding, samp_rate, SUN_UNSPEC, "");
au_size = 0;
}
}
if (linear_file)
{
if (strcmp(linear_file, "-") == 0)
{
linear_fd = 1 /* stdout */ ;
}
else
{
linear_fd = open(linear_file, O_WRONLY | O_CREAT | O_TRUNC, 0666);
if (linear_fd < 0)
perror(linear_file);
}
}
if (au_fd >= 0 || linear_fd >= 0)
{
file_write = aufile_write;
file_term = aufile_term;
}
return argc;
}
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