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Diffstat (limited to '1.4.23-rc4/formats/format_wav.c')
-rw-r--r--1.4.23-rc4/formats/format_wav.c531
1 files changed, 0 insertions, 531 deletions
diff --git a/1.4.23-rc4/formats/format_wav.c b/1.4.23-rc4/formats/format_wav.c
deleted file mode 100644
index a2acad87b..000000000
--- a/1.4.23-rc4/formats/format_wav.c
+++ /dev/null
@@ -1,531 +0,0 @@
-/*
- * Asterisk -- An open source telephony toolkit.
- *
- * Copyright (C) 1999 - 2005, Digium, Inc.
- *
- * Mark Spencer <markster@digium.com>
- *
- * 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.
- *
- * This program is free software, distributed under the terms of
- * the GNU General Public License Version 2. See the LICENSE file
- * at the top of the source tree.
- */
-
-/*! \file
- *
- * \brief Work with WAV in the proprietary Microsoft format.
- * Microsoft WAV format (8000hz Signed Linear)
- * \arg File name extension: wav (lower case)
- * \ingroup formats
- */
-
-#include "asterisk.h"
-
-ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
-
-#include <unistd.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <stdlib.h>
-#include <sys/time.h>
-#include <stdio.h>
-#include <errno.h>
-#include <string.h>
-
-#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"
-
-/* Some Ideas for this code came from makewave.c by Jeffrey Chilton */
-
-/* Portions of the conversion code are by guido@sienanet.it */
-
-#define WAV_BUF_SIZE 320
-
-struct wav_desc { /* format-specific parameters */
- int bytes;
- int needsgain;
- int lasttimeout;
- int maxlen;
- struct timeval last;
-};
-
-#define BLOCKSIZE 160
-
-#define GAIN 0 /* 2^GAIN is the multiple to increase the volume by. The original value of GAIN was 2, or 4x (12 dB),
- * but there were many reports of the clipping of loud signal peaks (issue 5823 for example). */
-
-#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
-
-
-static int check_header(FILE *f)
-{
- int type, size, formtype;
- int fmt, hsize;
- short format, chans, bysam, bisam;
- int bysec;
- int freq;
- int data;
- if (fread(&type, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (type)\n");
- return -1;
- }
- if (fread(&size, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (size)\n");
- return -1;
- }
- size = ltohl(size);
- if (fread(&formtype, 1, 4, f) != 4) {
- 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;
- }
- if (fread(&fmt, 1, 4, f) != 4) {
- 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;
- }
- if (fread(&hsize, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (formtype)\n");
- return -1;
- }
- if (ltohl(hsize) < 16) {
- ast_log(LOG_WARNING, "Unexpected header size %d\n", ltohl(hsize));
- return -1;
- }
- if (fread(&format, 1, 2, f) != 2) {
- 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;
- }
- if (fread(&chans, 1, 2, f) != 2) {
- 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;
- }
- if (fread(&freq, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (freq)\n");
- return -1;
- }
- if (ltohl(freq) != DEFAULT_SAMPLE_RATE) {
- ast_log(LOG_WARNING, "Unexpected freqency %d\n", ltohl(freq));
- return -1;
- }
- /* Ignore the byte frequency */
- if (fread(&bysec, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (BYTES_PER_SECOND)\n");
- return -1;
- }
- /* Check bytes per sample */
- if (fread(&bysam, 1, 2, f) != 2) {
- 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;
- }
- if (fread(&bisam, 1, 2, f) != 2) {
- ast_log(LOG_WARNING, "Read failed (Bits Per Sample): %d\n", ltohs(bisam));
- return -1;
- }
- /* Skip any additional header */
- if (fseek(f,ltohl(hsize)-16,SEEK_CUR) == -1 ) {
- ast_log(LOG_WARNING, "Failed to skip remaining header bytes: %d\n", ltohl(hsize)-16 );
- return -1;
- }
- /* Skip any facts and get the first data block */
- for(;;)
- {
- char buf[4];
-
- /* Begin data chunk */
- if (fread(&buf, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (data)\n");
- return -1;
- }
- /* Data has the actual length of data in it */
- if (fread(&data, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (data)\n");
- return -1;
- }
- data = ltohl(data);
- 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;
- }
- if (fseek(f,data,SEEK_CUR) == -1 ) {
- ast_log(LOG_WARNING, "Failed to skip fact block: %d\n", data );
- return -1;
- }
- }
-#if 0
- curpos = lseek(fd, 0, SEEK_CUR);
- truelength = lseek(fd, 0, SEEK_END);
- lseek(fd, curpos, SEEK_SET);
- truelength -= curpos;
-#endif
- return data;
-}
-
-static int update_header(FILE *f)
-{
- off_t cur,end;
- int datalen,filelen,bytes;
-
- cur = ftello(f);
- fseek(f, 0, SEEK_END);
- end = ftello(f);
- /* 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);
-
- if (cur < 0) {
- ast_log(LOG_WARNING, "Unable to find our position\n");
- return -1;
- }
- if (fseek(f, 4, SEEK_SET)) {
- ast_log(LOG_WARNING, "Unable to set our position\n");
- return -1;
- }
- if (fwrite(&filelen, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to set write file size\n");
- return -1;
- }
- if (fseek(f, 40, SEEK_SET)) {
- ast_log(LOG_WARNING, "Unable to set our position\n");
- return -1;
- }
- if (fwrite(&datalen, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to set write datalen\n");
- return -1;
- }
- if (fseeko(f, cur, SEEK_SET)) {
- ast_log(LOG_WARNING, "Unable to return to position\n");
- return -1;
- }
- return 0;
-}
-
-static int write_header(FILE *f)
-{
- 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 */
- fseek(f,0,SEEK_SET);
- if (fwrite("RIFF", 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- if (fwrite(&size, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- if (fwrite("WAVEfmt ", 1, 8, f) != 8) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- if (fwrite(&hs, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- if (fwrite(&fmt, 1, 2, f) != 2) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- if (fwrite(&chans, 1, 2, f) != 2) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- if (fwrite(&hz, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- if (fwrite(&bhz, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- if (fwrite(&bysam, 1, 2, f) != 2) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- if (fwrite(&bisam, 1, 2, f) != 2) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- if (fwrite("data", 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- if (fwrite(&size, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- return 0;
-}
-
-static int wav_open(struct ast_filestream *s)
-{
- /* 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. */
- struct wav_desc *tmp = (struct wav_desc *)s->_private;
- if ((tmp->maxlen = check_header(s->f)) < 0)
- return -1;
- return 0;
-}
-
-static int wav_rewrite(struct ast_filestream *s, const char *comment)
-{
- /* 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. */
-
- if (write_header(s->f))
- return -1;
- return 0;
-}
-
-static void wav_close(struct ast_filestream *s)
-{
- char zero = 0;
- struct wav_desc *fs = (struct wav_desc *)s->_private;
- /* Pad to even length */
- if (fs->bytes & 0x1) {
- if (!fwrite(&zero, 1, 1, s->f)) {
- ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
- }
- }
-}
-
-static struct ast_frame *wav_read(struct ast_filestream *s, int *whennext)
-{
- int res;
- int samples; /* actual samples read */
- int x;
- short *tmp;
- int bytes = WAV_BUF_SIZE; /* in bytes */
- off_t here;
- /* Send a frame from the file to the appropriate channel */
- struct wav_desc *fs = (struct wav_desc *)s->_private;
-
- here = ftello(s->f);
- if (fs->maxlen - here < bytes) /* truncate if necessary */
- bytes = fs->maxlen - here;
- if (bytes < 0)
- bytes = 0;
-/* ast_log(LOG_DEBUG, "here: %d, maxlen: %d, bytes: %d\n", here, s->maxlen, bytes); */
- s->fr.frametype = AST_FRAME_VOICE;
- s->fr.subclass = AST_FORMAT_SLINEAR;
- s->fr.mallocd = 0;
- AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, bytes);
-
- if ( (res = fread(s->fr.data, 1, s->fr.datalen, s->f)) <= 0 ) {
- if (res)
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
- return NULL;
- }
- s->fr.datalen = res;
- s->fr.samples = samples = res / 2;
-
- tmp = (short *)(s->fr.data);
-#if __BYTE_ORDER == __BIG_ENDIAN
- /* 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);
-#endif
-
- if (fs->needsgain) {
- for (x=0; x < samples; x++) {
- 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 */
- fs->needsgain = 0;
- break;
- }
- }
- if (fs->needsgain) {
- for (x=0; x < samples; x++)
- tmp[x] = tmp[x] >> GAIN;
- }
- }
-
- *whennext = samples;
- return &s->fr;
-}
-
-static int wav_write(struct ast_filestream *fs, struct ast_frame *f)
-{
- int x;
- short tmp[8000], *tmpi;
- float tmpf;
- struct wav_desc *s = (struct wav_desc *)fs->_private;
- int res;
-
- 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) {
- ast_log(LOG_WARNING, "Asked to write non-SLINEAR frame (%d)!\n", f->subclass);
- return -1;
- }
- if (f->datalen > sizeof(tmp)) {
- ast_log(LOG_WARNING, "Data length is too long\n");
- return -1;
- }
- if (!f->datalen)
- return -1;
-
-#if 0
- printf("Data Length: %d\n", f->datalen);
-#endif
-
- 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);
-
-#if __BYTE_ORDER == __BIG_ENDIAN
- tmp[x] = (tmp[x] << 8) | ((tmp[x] & 0xff00) >> 8);
-#endif
-
- }
- if ((res = fwrite(tmp, 1, f->datalen, fs->f)) != f->datalen ) {
- ast_log(LOG_WARNING, "Bad write (%d): %s\n", res, strerror(errno));
- return -1;
- }
-
- s->bytes += f->datalen;
- update_header(fs->f);
-
- return 0;
-
-}
-
-static int wav_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
-{
- off_t min, max, cur, offset = 0, samples;
-
- samples = sample_offset * 2; /* SLINEAR is 16 bits mono, so sample_offset * 2 = bytes */
- min = 44; /* wav header is 44 bytes */
- cur = ftello(fs->f);
- fseeko(fs->f, 0, SEEK_END);
- max = ftello(fs->f);
- if (whence == SEEK_SET)
- offset = samples + min;
- else if (whence == SEEK_CUR || whence == SEEK_FORCECUR)
- offset = samples + cur;
- else if (whence == SEEK_END)
- offset = max - samples;
- if (whence != SEEK_FORCECUR) {
- offset = (offset > max)?max:offset;
- }
- /* always protect the header space. */
- offset = (offset < min)?min:offset;
- return fseeko(fs->f, offset, SEEK_SET);
-}
-
-static int wav_trunc(struct ast_filestream *fs)
-{
- if (ftruncate(fileno(fs->f), ftello(fs->f)))
- return -1;
- return update_header(fs->f);
-}
-
-static off_t wav_tell(struct ast_filestream *fs)
-{
- off_t offset;
- offset = ftello(fs->f);
- /* subtract header size to get samples, then divide by 2 for 16 bit samples */
- return (offset - 44)/2;
-}
-
-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),
-};
-
-static int load_module(void)
-{
- return ast_format_register(&wav_f);
-}
-
-static int unload_module(void)
-{
- return ast_format_unregister(wav_f.name);
-}
-
-AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Microsoft WAV format (8000Hz Signed Linear)");
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 21:29:23 +0000