1999-12-05 07:09:27 +00:00
|
|
|
/*
|
2005-09-14 20:46:50 +00:00
|
|
|
* Asterisk -- An open source telephony toolkit.
|
1999-12-05 07:09:27 +00:00
|
|
|
*
|
2005-09-14 20:46:50 +00:00
|
|
|
* Copyright (C) 1999 - 2005, Digium, Inc.
|
|
|
|
*
|
|
|
|
* Mark Spencer <markster@digium.com>
|
1999-12-05 07:09:27 +00:00
|
|
|
*
|
2005-09-14 20:46:50 +00:00
|
|
|
* See http://www.asterisk.org for more information about
|
|
|
|
* the Asterisk project. Please do not directly contact
|
|
|
|
* any of the maintainers of this project for assistance;
|
|
|
|
* the project provides a web site, mailing lists and IRC
|
|
|
|
* channels for your use.
|
1999-12-05 07:09:27 +00:00
|
|
|
*
|
|
|
|
* This program is free software, distributed under the terms of
|
2005-09-14 20:46:50 +00:00
|
|
|
* the GNU General Public License Version 2. See the LICENSE file
|
|
|
|
* at the top of the source tree.
|
|
|
|
*/
|
|
|
|
|
2005-10-26 13:03:17 +00:00
|
|
|
/*! \file
|
2005-09-14 20:46:50 +00:00
|
|
|
*
|
2005-10-26 13:03:17 +00:00
|
|
|
* \brief Work with WAV in the proprietary Microsoft format.
|
2005-11-06 15:09:47 +00:00
|
|
|
* Microsoft WAV format (8000hz Signed Linear)
|
|
|
|
* \arg File name extension: wav (lower case)
|
|
|
|
* \ingroup formats
|
1999-12-05 07:09:27 +00:00
|
|
|
*/
|
|
|
|
|
2006-06-07 18:54:56 +00:00
|
|
|
#include "asterisk.h"
|
|
|
|
|
|
|
|
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
|
|
|
|
|
2005-06-07 17:06:33 +00:00
|
|
|
#include <unistd.h>
|
2003-09-08 16:48:07 +00:00
|
|
|
#include <netinet/in.h>
|
1999-12-05 07:09:27 +00:00
|
|
|
#include <arpa/inet.h>
|
|
|
|
#include <stdlib.h>
|
2001-04-10 03:08:27 +00:00
|
|
|
#include <sys/time.h>
|
1999-12-05 07:09:27 +00:00
|
|
|
#include <stdio.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#include <string.h>
|
|
|
|
|
2005-06-06 22:12:19 +00:00
|
|
|
#include "asterisk/lock.h"
|
|
|
|
#include "asterisk/channel.h"
|
|
|
|
#include "asterisk/file.h"
|
|
|
|
#include "asterisk/logger.h"
|
|
|
|
#include "asterisk/sched.h"
|
|
|
|
#include "asterisk/module.h"
|
|
|
|
#include "asterisk/endian.h"
|
|
|
|
|
2004-01-22 21:30:04 +00:00
|
|
|
/* Some Ideas for this code came from makewave.c by Jeffrey Chilton */
|
1999-12-05 07:09:27 +00:00
|
|
|
|
2001-04-10 03:08:27 +00:00
|
|
|
/* Portions of the conversion code are by guido@sienanet.it */
|
1999-12-05 07:09:27 +00:00
|
|
|
|
2006-04-04 12:59:25 +00:00
|
|
|
#define WAV_BUF_SIZE 320
|
|
|
|
|
|
|
|
struct wav_desc { /* format-specific parameters */
|
2001-04-10 03:08:27 +00:00
|
|
|
int bytes;
|
2002-09-04 05:09:41 +00:00
|
|
|
int needsgain;
|
2001-04-10 03:08:27 +00:00
|
|
|
int lasttimeout;
|
2003-05-16 19:23:07 +00:00
|
|
|
int maxlen;
|
2001-04-10 03:08:27 +00:00
|
|
|
struct timeval last;
|
1999-12-05 07:09:27 +00:00
|
|
|
};
|
|
|
|
|
2001-04-10 03:08:27 +00:00
|
|
|
#define BLOCKSIZE 160
|
|
|
|
|
2002-09-04 05:09:41 +00:00
|
|
|
#define GAIN 2 /* 2^GAIN is the multiple to increase the volume by */
|
|
|
|
|
2001-04-10 03:08:27 +00:00
|
|
|
#if __BYTE_ORDER == __LITTLE_ENDIAN
|
|
|
|
#define htoll(b) (b)
|
|
|
|
#define htols(b) (b)
|
|
|
|
#define ltohl(b) (b)
|
|
|
|
#define ltohs(b) (b)
|
|
|
|
#else
|
|
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
|
|
|
#define htoll(b) \
|
|
|
|
(((((b) ) & 0xFF) << 24) | \
|
|
|
|
((((b) >> 8) & 0xFF) << 16) | \
|
|
|
|
((((b) >> 16) & 0xFF) << 8) | \
|
|
|
|
((((b) >> 24) & 0xFF) ))
|
|
|
|
#define htols(b) \
|
|
|
|
(((((b) ) & 0xFF) << 8) | \
|
|
|
|
((((b) >> 8) & 0xFF) ))
|
|
|
|
#define ltohl(b) htoll(b)
|
|
|
|
#define ltohs(b) htols(b)
|
|
|
|
#else
|
|
|
|
#error "Endianess not defined"
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
2005-10-16 16:12:51 +00:00
|
|
|
static int check_header(FILE *f)
|
2001-04-10 03:08:27 +00:00
|
|
|
{
|
|
|
|
int type, size, formtype;
|
|
|
|
int fmt, hsize;
|
|
|
|
short format, chans, bysam, bisam;
|
|
|
|
int bysec;
|
|
|
|
int freq;
|
|
|
|
int data;
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&type, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Read failed (type)\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&size, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Read failed (size)\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
size = ltohl(size);
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&formtype, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Read failed (formtype)\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (memcmp(&type, "RIFF", 4)) {
|
|
|
|
ast_log(LOG_WARNING, "Does not begin with RIFF\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (memcmp(&formtype, "WAVE", 4)) {
|
|
|
|
ast_log(LOG_WARNING, "Does not contain WAVE\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&fmt, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Read failed (fmt)\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (memcmp(&fmt, "fmt ", 4)) {
|
|
|
|
ast_log(LOG_WARNING, "Does not say fmt\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&hsize, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Read failed (formtype)\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2004-02-02 06:34:27 +00:00
|
|
|
if (ltohl(hsize) < 16) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unexpected header size %d\n", ltohl(hsize));
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&format, 1, 2, f) != 2) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Read failed (format)\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (ltohs(format) != 1) {
|
|
|
|
ast_log(LOG_WARNING, "Not a wav file %d\n", ltohs(format));
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&chans, 1, 2, f) != 2) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Read failed (format)\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (ltohs(chans) != 1) {
|
|
|
|
ast_log(LOG_WARNING, "Not in mono %d\n", ltohs(chans));
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&freq, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Read failed (freq)\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2006-04-04 12:59:25 +00:00
|
|
|
if (ltohl(freq) != DEFAULT_SAMPLE_RATE) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unexpected freqency %d\n", ltohl(freq));
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
/* Ignore the byte frequency */
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&bysec, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Read failed (BYTES_PER_SECOND)\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
/* Check bytes per sample */
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&bysam, 1, 2, f) != 2) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Read failed (BYTES_PER_SAMPLE)\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (ltohs(bysam) != 2) {
|
|
|
|
ast_log(LOG_WARNING, "Can only handle 16bits per sample: %d\n", ltohs(bysam));
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&bisam, 1, 2, f) != 2) {
|
2002-06-21 01:40:13 +00:00
|
|
|
ast_log(LOG_WARNING, "Read failed (Bits Per Sample): %d\n", ltohs(bisam));
|
2001-04-10 03:08:27 +00:00
|
|
|
return -1;
|
|
|
|
}
|
2004-12-18 22:04:07 +00:00
|
|
|
/* Skip any additional header */
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fseek(f,ltohl(hsize)-16,SEEK_CUR) == -1 ) {
|
2004-02-02 06:34:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Failed to skip remaining header bytes: %d\n", ltohl(hsize)-16 );
|
2001-04-10 03:08:27 +00:00
|
|
|
return -1;
|
|
|
|
}
|
2004-12-18 22:04:07 +00:00
|
|
|
/* Skip any facts and get the first data block */
|
2004-02-02 06:34:27 +00:00
|
|
|
for(;;)
|
|
|
|
{
|
2005-10-16 16:12:51 +00:00
|
|
|
char buf[4];
|
2004-02-02 06:34:27 +00:00
|
|
|
|
|
|
|
/* Begin data chunk */
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&buf, 1, 4, f) != 4) {
|
|
|
|
ast_log(LOG_WARNING, "Read failed (data)\n");
|
|
|
|
return -1;
|
2004-02-02 06:34:27 +00:00
|
|
|
}
|
|
|
|
/* Data has the actual length of data in it */
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fread(&data, 1, 4, f) != 4) {
|
|
|
|
ast_log(LOG_WARNING, "Read failed (data)\n");
|
|
|
|
return -1;
|
2004-02-02 06:34:27 +00:00
|
|
|
}
|
|
|
|
data = ltohl(data);
|
2005-10-16 16:12:51 +00:00
|
|
|
if(memcmp(buf, "data", 4) == 0 )
|
|
|
|
break;
|
|
|
|
if(memcmp(buf, "fact", 4) != 0 ) {
|
|
|
|
ast_log(LOG_WARNING, "Unknown block - not fact or data\n");
|
|
|
|
return -1;
|
2004-02-02 06:34:27 +00:00
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fseek(f,data,SEEK_CUR) == -1 ) {
|
|
|
|
ast_log(LOG_WARNING, "Failed to skip fact block: %d\n", data );
|
|
|
|
return -1;
|
2004-02-02 06:34:27 +00:00
|
|
|
}
|
2001-04-10 03:08:27 +00:00
|
|
|
}
|
2003-05-16 19:23:07 +00:00
|
|
|
#if 0
|
|
|
|
curpos = lseek(fd, 0, SEEK_CUR);
|
|
|
|
truelength = lseek(fd, 0, SEEK_END);
|
|
|
|
lseek(fd, curpos, SEEK_SET);
|
|
|
|
truelength -= curpos;
|
|
|
|
#endif
|
2004-02-02 06:34:27 +00:00
|
|
|
return data;
|
2001-04-10 03:08:27 +00:00
|
|
|
}
|
|
|
|
|
2005-10-16 16:12:51 +00:00
|
|
|
static int update_header(FILE *f)
|
2001-04-10 03:08:27 +00:00
|
|
|
{
|
2003-02-06 22:11:43 +00:00
|
|
|
off_t cur,end;
|
|
|
|
int datalen,filelen,bytes;
|
|
|
|
|
2006-02-20 23:35:12 +00:00
|
|
|
cur = ftello(f);
|
2005-10-16 16:12:51 +00:00
|
|
|
fseek(f, 0, SEEK_END);
|
2006-02-20 23:35:12 +00:00
|
|
|
end = ftello(f);
|
2003-02-06 22:11:43 +00:00
|
|
|
/* data starts 44 bytes in */
|
|
|
|
bytes = end - 44;
|
|
|
|
datalen = htoll(bytes);
|
|
|
|
/* chunk size is bytes of data plus 36 bytes of header */
|
|
|
|
filelen = htoll(36 + bytes);
|
|
|
|
|
2001-04-10 03:08:27 +00:00
|
|
|
if (cur < 0) {
|
|
|
|
ast_log(LOG_WARNING, "Unable to find our position\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fseek(f, 4, SEEK_SET)) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to set our position\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite(&filelen, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to set write file size\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fseek(f, 40, SEEK_SET)) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to set our position\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite(&datalen, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to set write datalen\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2006-02-20 23:35:12 +00:00
|
|
|
if (fseeko(f, cur, SEEK_SET)) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to return to position\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-10-16 16:12:51 +00:00
|
|
|
static int write_header(FILE *f)
|
2001-04-10 03:08:27 +00:00
|
|
|
{
|
|
|
|
unsigned int hz=htoll(8000);
|
|
|
|
unsigned int bhz = htoll(16000);
|
|
|
|
unsigned int hs = htoll(16);
|
|
|
|
unsigned short fmt = htols(1);
|
|
|
|
unsigned short chans = htols(1);
|
|
|
|
unsigned short bysam = htols(2);
|
|
|
|
unsigned short bisam = htols(16);
|
|
|
|
unsigned int size = htoll(0);
|
|
|
|
/* Write a wav header, ignoring sizes which will be filled in later */
|
2005-10-16 16:12:51 +00:00
|
|
|
fseek(f,0,SEEK_SET);
|
|
|
|
if (fwrite("RIFF", 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to write header\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite(&size, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to write header\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite("WAVEfmt ", 1, 8, f) != 8) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to write header\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite(&hs, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to write header\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite(&fmt, 1, 2, f) != 2) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to write header\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite(&chans, 1, 2, f) != 2) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to write header\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite(&hz, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to write header\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite(&bhz, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to write header\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite(&bysam, 1, 2, f) != 2) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to write header\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite(&bisam, 1, 2, f) != 2) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to write header\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite("data", 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to write header\n");
|
|
|
|
return -1;
|
|
|
|
}
|
2005-10-16 16:12:51 +00:00
|
|
|
if (fwrite(&size, 1, 4, f) != 4) {
|
2001-04-10 03:08:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Unable to write header\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-04-04 12:59:25 +00:00
|
|
|
static int wav_open(struct ast_filestream *s)
|
1999-12-05 07:09:27 +00:00
|
|
|
{
|
|
|
|
/* We don't have any header to read or anything really, but
|
|
|
|
if we did, it would go here. We also might want to check
|
|
|
|
and be sure it's a valid file. */
|
2006-04-04 12:59:25 +00:00
|
|
|
struct wav_desc *tmp = (struct wav_desc *)s->private;
|
|
|
|
if ((tmp->maxlen = check_header(s->f)) < 0)
|
|
|
|
return -1;
|
|
|
|
return 0;
|
1999-12-05 07:09:27 +00:00
|
|
|
}
|
|
|
|
|
2006-04-04 12:59:25 +00:00
|
|
|
static int wav_rewrite(struct ast_filestream *s, const char *comment)
|
1999-12-05 07:09:27 +00:00
|
|
|
{
|
|
|
|
/* We don't have any header to read or anything really, but
|
|
|
|
if we did, it would go here. We also might want to check
|
|
|
|
and be sure it's a valid file. */
|
2006-04-04 12:59:25 +00:00
|
|
|
|
|
|
|
if (write_header(s->f))
|
|
|
|
return -1;
|
|
|
|
return 0;
|
1999-12-05 07:09:27 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void wav_close(struct ast_filestream *s)
|
|
|
|
{
|
2001-04-10 03:08:27 +00:00
|
|
|
char zero = 0;
|
2006-04-04 12:59:25 +00:00
|
|
|
struct wav_desc *fs = (struct wav_desc *)s->private;
|
2001-04-10 03:08:27 +00:00
|
|
|
/* Pad to even length */
|
2006-04-04 12:59:25 +00:00
|
|
|
if (fs->bytes & 0x1)
|
2005-10-16 16:12:51 +00:00
|
|
|
fwrite(&zero, 1, 1, s->f);
|
1999-12-05 07:09:27 +00:00
|
|
|
}
|
|
|
|
|
2003-06-28 22:50:47 +00:00
|
|
|
static struct ast_frame *wav_read(struct ast_filestream *s, int *whennext)
|
1999-12-05 07:09:27 +00:00
|
|
|
{
|
|
|
|
int res;
|
2006-04-04 12:59:25 +00:00
|
|
|
int samples; /* actual samples read */
|
2002-09-04 05:09:41 +00:00
|
|
|
int x;
|
2006-04-04 12:59:25 +00:00
|
|
|
short *tmp;
|
|
|
|
int bytes = WAV_BUF_SIZE; /* in bytes */
|
2003-05-16 19:23:07 +00:00
|
|
|
off_t here;
|
1999-12-05 07:09:27 +00:00
|
|
|
/* Send a frame from the file to the appropriate channel */
|
2006-04-04 12:59:25 +00:00
|
|
|
struct wav_desc *fs = (struct wav_desc *)s->private;
|
|
|
|
|
2006-02-20 23:35:12 +00:00
|
|
|
here = ftello(s->f);
|
2006-04-04 12:59:25 +00:00
|
|
|
if (fs->maxlen - here < bytes) /* truncate if necessary */
|
|
|
|
bytes = fs->maxlen - here;
|
2003-05-16 19:23:07 +00:00
|
|
|
if (bytes < 0)
|
|
|
|
bytes = 0;
|
|
|
|
/* ast_log(LOG_DEBUG, "here: %d, maxlen: %d, bytes: %d\n", here, s->maxlen, bytes); */
|
2006-04-04 12:59:25 +00:00
|
|
|
s->fr.frametype = AST_FRAME_VOICE;
|
|
|
|
s->fr.subclass = AST_FORMAT_SLINEAR;
|
|
|
|
s->fr.mallocd = 0;
|
2006-04-09 22:31:38 +00:00
|
|
|
AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, bytes);
|
2001-04-10 03:08:27 +00:00
|
|
|
|
2006-04-04 12:59:25 +00:00
|
|
|
if ( (res = fread(s->fr.data, 1, s->fr.datalen, s->f)) <= 0 ) {
|
|
|
|
if (res)
|
1999-12-05 07:09:27 +00:00
|
|
|
ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
|
2003-06-28 22:50:47 +00:00
|
|
|
return NULL;
|
1999-12-05 07:09:27 +00:00
|
|
|
}
|
2006-04-04 12:59:25 +00:00
|
|
|
s->fr.datalen = res;
|
|
|
|
s->fr.samples = samples = res / 2;
|
2003-02-06 22:11:43 +00:00
|
|
|
|
2006-04-04 12:59:25 +00:00
|
|
|
tmp = (short *)(s->fr.data);
|
2003-02-06 22:11:43 +00:00
|
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
2006-04-04 12:59:25 +00:00
|
|
|
/* file format is little endian so we need to swap */
|
|
|
|
for( x = 0; x < samples; x++)
|
|
|
|
tmp[x] = (tmp[x] << 8) | ((tmp[x] & 0xff00) >> 8);
|
2003-02-06 22:11:43 +00:00
|
|
|
#endif
|
|
|
|
|
2006-04-04 12:59:25 +00:00
|
|
|
if (fs->needsgain) {
|
|
|
|
for (x=0; x < samples; x++) {
|
2002-09-04 05:09:41 +00:00
|
|
|
if (tmp[x] & ((1 << GAIN) - 1)) {
|
|
|
|
/* If it has data down low, then it's not something we've artificially increased gain
|
|
|
|
on, so we don't need to gain adjust it */
|
2006-04-04 12:59:25 +00:00
|
|
|
fs->needsgain = 0;
|
|
|
|
break;
|
2002-09-04 05:09:41 +00:00
|
|
|
}
|
|
|
|
}
|
2006-04-04 12:59:25 +00:00
|
|
|
if (fs->needsgain) {
|
|
|
|
for (x=0; x < samples; x++)
|
|
|
|
tmp[x] = tmp[x] >> GAIN;
|
|
|
|
}
|
2002-09-04 05:09:41 +00:00
|
|
|
}
|
|
|
|
|
2006-04-04 12:59:25 +00:00
|
|
|
*whennext = samples;
|
2003-06-28 22:50:47 +00:00
|
|
|
return &s->fr;
|
1999-12-05 07:09:27 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int wav_write(struct ast_filestream *fs, struct ast_frame *f)
|
|
|
|
{
|
2002-09-04 05:09:41 +00:00
|
|
|
int x;
|
|
|
|
short tmp[8000], *tmpi;
|
|
|
|
float tmpf;
|
2006-04-04 12:59:25 +00:00
|
|
|
struct wav_desc *s = (struct wav_desc *)fs->private;
|
|
|
|
int res;
|
|
|
|
|
1999-12-05 07:09:27 +00:00
|
|
|
if (f->frametype != AST_FRAME_VOICE) {
|
|
|
|
ast_log(LOG_WARNING, "Asked to write non-voice frame!\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (f->subclass != AST_FORMAT_SLINEAR) {
|
2003-02-06 22:11:43 +00:00
|
|
|
ast_log(LOG_WARNING, "Asked to write non-SLINEAR frame (%d)!\n", f->subclass);
|
1999-12-05 07:09:27 +00:00
|
|
|
return -1;
|
|
|
|
}
|
2002-09-04 05:09:41 +00:00
|
|
|
if (f->datalen > sizeof(tmp)) {
|
|
|
|
ast_log(LOG_WARNING, "Data length is too long\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (!f->datalen)
|
|
|
|
return -1;
|
2001-04-10 03:08:27 +00:00
|
|
|
|
|
|
|
#if 0
|
|
|
|
printf("Data Length: %d\n", f->datalen);
|
|
|
|
#endif
|
|
|
|
|
2006-04-04 12:59:25 +00:00
|
|
|
tmpi = f->data;
|
|
|
|
/* Volume adjust here to accomodate */
|
|
|
|
for (x=0;x<f->datalen/2;x++) {
|
|
|
|
tmpf = ((float)tmpi[x]) * ((float)(1 << GAIN));
|
|
|
|
if (tmpf > 32767.0)
|
|
|
|
tmpf = 32767.0;
|
|
|
|
if (tmpf < -32768.0)
|
|
|
|
tmpf = -32768.0;
|
|
|
|
tmp[x] = tmpf;
|
|
|
|
tmp[x] &= ~((1 << GAIN) - 1);
|
2003-02-06 22:11:43 +00:00
|
|
|
|
|
|
|
#if __BYTE_ORDER == __BIG_ENDIAN
|
2006-04-04 12:59:25 +00:00
|
|
|
tmp[x] = (tmp[x] << 8) | ((tmp[x] & 0xff00) >> 8);
|
2003-02-06 22:11:43 +00:00
|
|
|
#endif
|
|
|
|
|
2006-04-04 12:59:25 +00:00
|
|
|
}
|
|
|
|
if ((res = fwrite(tmp, 1, f->datalen, fs->f)) != f->datalen ) {
|
|
|
|
ast_log(LOG_WARNING, "Bad write (%d): %s\n", res, strerror(errno));
|
1999-12-05 07:09:27 +00:00
|
|
|
return -1;
|
2001-04-10 03:08:27 +00:00
|
|
|
}
|
2006-04-04 12:59:25 +00:00
|
|
|
|
|
|
|
s->bytes += f->datalen;
|
2005-10-16 16:12:51 +00:00
|
|
|
update_header(fs->f);
|
2001-04-10 03:08:27 +00:00
|
|
|
|
1999-12-05 07:09:27 +00:00
|
|
|
return 0;
|
2001-04-10 03:08:27 +00:00
|
|
|
|
1999-12-05 07:09:27 +00:00
|
|
|
}
|
|
|
|
|
2006-02-20 23:35:12 +00:00
|
|
|
static int wav_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
|
2003-02-06 22:11:43 +00:00
|
|
|
{
|
2006-02-20 23:35:12 +00:00
|
|
|
off_t min, max, cur, offset = 0, samples;
|
|
|
|
|
2003-02-06 22:11:43 +00:00
|
|
|
samples = sample_offset * 2; /* SLINEAR is 16 bits mono, so sample_offset * 2 = bytes */
|
|
|
|
min = 44; /* wav header is 44 bytes */
|
2006-02-20 23:35:12 +00:00
|
|
|
cur = ftello(fs->f);
|
|
|
|
fseeko(fs->f, 0, SEEK_END);
|
|
|
|
max = ftello(fs->f);
|
2003-08-28 20:02:10 +00:00
|
|
|
if (whence == SEEK_SET)
|
2003-02-06 22:11:43 +00:00
|
|
|
offset = samples + min;
|
2003-08-28 20:02:10 +00:00
|
|
|
else if (whence == SEEK_CUR || whence == SEEK_FORCECUR)
|
2003-02-06 22:11:43 +00:00
|
|
|
offset = samples + cur;
|
2003-08-28 20:02:10 +00:00
|
|
|
else if (whence == SEEK_END)
|
|
|
|
offset = max - samples;
|
|
|
|
if (whence != SEEK_FORCECUR) {
|
|
|
|
offset = (offset > max)?max:offset;
|
|
|
|
}
|
2004-12-18 22:04:07 +00:00
|
|
|
/* always protect the header space. */
|
2004-04-15 16:02:42 +00:00
|
|
|
offset = (offset < min)?min:offset;
|
2006-02-20 23:35:12 +00:00
|
|
|
return fseeko(fs->f, offset, SEEK_SET);
|
2003-02-06 22:11:43 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int wav_trunc(struct ast_filestream *fs)
|
|
|
|
{
|
2006-02-20 23:35:12 +00:00
|
|
|
if (ftruncate(fileno(fs->f), ftello(fs->f)))
|
2003-02-06 22:11:43 +00:00
|
|
|
return -1;
|
2005-10-16 16:12:51 +00:00
|
|
|
return update_header(fs->f);
|
2003-02-06 22:11:43 +00:00
|
|
|
}
|
|
|
|
|
2006-02-20 23:35:12 +00:00
|
|
|
static off_t wav_tell(struct ast_filestream *fs)
|
2003-02-06 22:11:43 +00:00
|
|
|
{
|
|
|
|
off_t offset;
|
2006-02-20 23:35:12 +00:00
|
|
|
offset = ftello(fs->f);
|
2003-02-06 22:11:43 +00:00
|
|
|
/* subtract header size to get samples, then divide by 2 for 16 bit samples */
|
|
|
|
return (offset - 44)/2;
|
|
|
|
}
|
|
|
|
|
2006-04-04 12:59:25 +00:00
|
|
|
static const struct ast_format wav_f = {
|
|
|
|
.name = "wav",
|
|
|
|
.exts = "wav",
|
|
|
|
.format = AST_FORMAT_SLINEAR,
|
|
|
|
.open = wav_open,
|
|
|
|
.rewrite = wav_rewrite,
|
|
|
|
.write = wav_write,
|
|
|
|
.seek = wav_seek,
|
|
|
|
.trunc = wav_trunc,
|
|
|
|
.tell = wav_tell,
|
|
|
|
.read = wav_read,
|
|
|
|
.close = wav_close,
|
|
|
|
.buf_size = WAV_BUF_SIZE + AST_FRIENDLY_OFFSET,
|
|
|
|
.desc_size = sizeof(struct wav_desc),
|
|
|
|
};
|
1999-12-05 07:09:27 +00:00
|
|
|
|
2006-08-21 02:11:39 +00:00
|
|
|
static int load_module(void)
|
1999-12-05 07:09:27 +00:00
|
|
|
{
|
2006-04-04 12:59:25 +00:00
|
|
|
return ast_format_register(&wav_f);
|
1999-12-05 07:09:27 +00:00
|
|
|
}
|
|
|
|
|
2006-08-21 02:11:39 +00:00
|
|
|
static int unload_module(void)
|
1999-12-05 07:09:27 +00:00
|
|
|
{
|
2006-04-04 12:59:25 +00:00
|
|
|
return ast_format_unregister(wav_f.name);
|
1999-12-05 07:09:27 +00:00
|
|
|
}
|
|
|
|
|
2006-08-21 02:11:39 +00:00
|
|
|
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Microsoft WAV format (8000Hz Signed Linear)");
|