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Diffstat (limited to 'formats/format_wav_gsm.c')
-rw-r--r--formats/format_wav_gsm.c562
1 files changed, 0 insertions, 562 deletions
diff --git a/formats/format_wav_gsm.c b/formats/format_wav_gsm.c
deleted file mode 100644
index a7b2310bd..000000000
--- a/formats/format_wav_gsm.c
+++ /dev/null
@@ -1,562 +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 Save GSM in the proprietary Microsoft format.
- *
- * Microsoft WAV format (Proprietary GSM)
- * \arg File name extension: WAV,wav49 (Upper case WAV, lower case is another format)
- * This format can be played on Windows systems, used for
- * e-mail attachments mainly.
- * \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"
-
-#include "msgsm.h"
-
-/* Some Ideas for this code came from makewave.c by Jeffrey Chilton */
-
-/* Portions of the conversion code are by guido@sienanet.it */
-
-#define GSM_FRAME_SIZE 33
-#define MSGSM_FRAME_SIZE 65
-#define MSGSM_DATA_OFFSET 60 /* offset of data bytes */
-#define GSM_SAMPLES 160 /* samples in a GSM block */
-#define MSGSM_SAMPLES (2*GSM_SAMPLES) /* samples in an MSGSM block */
-
-/* begin binary data: */
-char msgsm_silence[] = /* 65 */
-{0x48,0x17,0xD6,0x84,0x02,0x80,0x24,0x49,0x92,0x24,0x89,0x02,0x80,0x24,0x49
-,0x92,0x24,0x89,0x02,0x80,0x24,0x49,0x92,0x24,0x89,0x02,0x80,0x24,0x49,0x92
-,0x24,0x09,0x82,0x74,0x61,0x4D,0x28,0x00,0x48,0x92,0x24,0x49,0x92,0x28,0x00
-,0x48,0x92,0x24,0x49,0x92,0x28,0x00,0x48,0x92,0x24,0x49,0x92,0x28,0x00,0x48
-,0x92,0x24,0x49,0x92,0x00};
-/* end binary data. size = 65 bytes */
-
-struct wavg_desc {
- /* Believe it or not, we must decode/recode to account for the
- weird MS format */
- int secondhalf; /* Are we on the second half */
-};
-
-#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, fact;
- short format, chans;
- 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) != 20) {
- 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) != 49) {
- ast_log(LOG_WARNING, "Not a GSM 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(&freq, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (X_1)\n");
- return -1;
- }
- /* Ignore the two weird fields */
- if (fread(&freq, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (X_2/X_3)\n");
- return -1;
- }
- /* Ignore the byte frequency */
- if (fread(&freq, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (Y_1)\n");
- return -1;
- }
- /* Check for the word fact */
- if (fread(&fact, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (fact)\n");
- return -1;
- }
- if (memcmp(&fact, "fact", 4)) {
- ast_log(LOG_WARNING, "Does not say fact\n");
- return -1;
- }
- /* Ignore the "fact value" */
- if (fread(&fact, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (fact header)\n");
- return -1;
- }
- if (fread(&fact, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (fact value)\n");
- return -1;
- }
- /* Check for the word data */
- if (fread(&data, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (data)\n");
- return -1;
- }
- if (memcmp(&data, "data", 4)) {
- ast_log(LOG_WARNING, "Does not say data\n");
- return -1;
- }
- /* Ignore the data length */
- if (fread(&data, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Read failed (data)\n");
- return -1;
- }
- return 0;
-}
-
-static int update_header(FILE *f)
-{
- off_t cur,end,bytes;
- int datalen, filelen, samples;
-
- cur = ftello(f);
- fseek(f, 0, SEEK_END);
- end = ftello(f);
- /* in a gsm WAV, data starts 60 bytes in */
- bytes = end - MSGSM_DATA_OFFSET;
- samples = htoll(bytes / MSGSM_FRAME_SIZE * MSGSM_SAMPLES);
- datalen = htoll(bytes);
- filelen = htoll(MSGSM_DATA_OFFSET - 8 + 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 write file size\n");
- return -1;
- }
- if (fseek(f, 48, SEEK_SET)) {
- ast_log(LOG_WARNING, "Unable to set our position\n");
- return -1;
- }
- if (fwrite(&samples, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write samples\n");
- return -1;
- }
- if (fseek(f, 56, 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 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)
-{
- /* Samples per second (always 8000 for this format). */
- unsigned int sample_rate = htoll(8000);
- /* Bytes per second (always 1625 for this format). */
- unsigned int byte_sample_rate = htoll(1625);
- /* This is the size of the "fmt " subchunk */
- unsigned int fmtsize = htoll(20);
- /* WAV #49 */
- unsigned short fmt = htols(49);
- /* Mono = 1 channel */
- unsigned short chans = htols(1);
- /* Each block of data is exactly 65 bytes in size. */
- unsigned int block_align = htoll(MSGSM_FRAME_SIZE);
- /* Not actually 2, but rounded up to the nearest bit */
- unsigned short bits_per_sample = htols(2);
- /* Needed for compressed formats */
- unsigned short extra_format = htols(MSGSM_SAMPLES);
- /* This is the size of the "fact" subchunk */
- unsigned int factsize = htoll(4);
- /* Number of samples in the data chunk */
- unsigned int num_samples = htoll(0);
- /* Number of bytes in the data chunk */
- unsigned int size = htoll(0);
- /* Write a GSM header, ignoring sizes which will be filled in later */
-
- /* 0: Chunk ID */
- if (fwrite("RIFF", 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 4: Chunk Size */
- if (fwrite(&size, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 8: Chunk Format */
- if (fwrite("WAVE", 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 12: Subchunk 1: ID */
- if (fwrite("fmt ", 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 16: Subchunk 1: Size (minus 8) */
- if (fwrite(&fmtsize, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 20: Subchunk 1: Audio format (49) */
- if (fwrite(&fmt, 1, 2, f) != 2) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 22: Subchunk 1: Number of channels */
- if (fwrite(&chans, 1, 2, f) != 2) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 24: Subchunk 1: Sample rate */
- if (fwrite(&sample_rate, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 28: Subchunk 1: Byte rate */
- if (fwrite(&byte_sample_rate, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 32: Subchunk 1: Block align */
- if (fwrite(&block_align, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 36: Subchunk 1: Bits per sample */
- if (fwrite(&bits_per_sample, 1, 2, f) != 2) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 38: Subchunk 1: Extra format bytes */
- if (fwrite(&extra_format, 1, 2, f) != 2) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 40: Subchunk 2: ID */
- if (fwrite("fact", 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 44: Subchunk 2: Size (minus 8) */
- if (fwrite(&factsize, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 48: Subchunk 2: Number of samples */
- if (fwrite(&num_samples, 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 52: Subchunk 3: ID */
- if (fwrite("data", 1, 4, f) != 4) {
- ast_log(LOG_WARNING, "Unable to write header\n");
- return -1;
- }
- /* 56: Subchunk 3: Size */
- 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 wavg_desc *fs = (struct wavg_desc *)s->_private;
-
- if (check_header(s->f))
- return -1;
- fs->secondhalf = 0; /* not strictly necessary */
- 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 struct ast_frame *wav_read(struct ast_filestream *s, int *whennext)
-{
- /* Send a frame from the file to the appropriate channel */
- struct wavg_desc *fs = (struct wavg_desc *)s->_private;
-
- s->fr.frametype = AST_FRAME_VOICE;
- s->fr.subclass = AST_FORMAT_GSM;
- s->fr.offset = AST_FRIENDLY_OFFSET;
- s->fr.samples = GSM_SAMPLES;
- s->fr.mallocd = 0;
- AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, GSM_FRAME_SIZE);
- if (fs->secondhalf) {
- /* Just return a frame based on the second GSM frame */
- s->fr.data = (char *)s->fr.data + GSM_FRAME_SIZE;
- s->fr.offset += GSM_FRAME_SIZE;
- } else {
- /* read and convert */
- unsigned char msdata[MSGSM_FRAME_SIZE];
- int res;
-
- if ((res = fread(msdata, 1, MSGSM_FRAME_SIZE, s->f)) != MSGSM_FRAME_SIZE) {
- if (res && (res != 1))
- ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
- return NULL;
- }
- /* Convert from MS format to two real GSM frames */
- conv65(msdata, s->fr.data);
- }
- fs->secondhalf = !fs->secondhalf;
- *whennext = GSM_SAMPLES;
- return &s->fr;
-}
-
-static int wav_write(struct ast_filestream *s, struct ast_frame *f)
-{
- int len;
- int size;
- struct wavg_desc *fs = (struct wavg_desc *)s->_private;
-
- if (f->frametype != AST_FRAME_VOICE) {
- ast_log(LOG_WARNING, "Asked to write non-voice frame!\n");
- return -1;
- }
- if (f->subclass != AST_FORMAT_GSM) {
- ast_log(LOG_WARNING, "Asked to write non-GSM frame (%d)!\n", f->subclass);
- return -1;
- }
- /* XXX this might fail... if the input is a multiple of MSGSM_FRAME_SIZE
- * we assume it is already in the correct format.
- */
- if (!(f->datalen % MSGSM_FRAME_SIZE)) {
- size = MSGSM_FRAME_SIZE;
- fs->secondhalf = 0;
- } else {
- size = GSM_FRAME_SIZE;
- }
- for (len = 0; len < f->datalen ; len += size) {
- int res;
- unsigned char *src, msdata[MSGSM_FRAME_SIZE];
- if (fs->secondhalf) { /* second half of raw gsm to be converted */
- memcpy(s->buf + GSM_FRAME_SIZE, f->data + len, GSM_FRAME_SIZE);
- conv66((unsigned char *) s->buf, msdata);
- src = msdata;
- fs->secondhalf = 0;
- } else if (size == GSM_FRAME_SIZE) { /* first half of raw gsm */
- memcpy(s->buf, f->data + len, GSM_FRAME_SIZE);
- src = NULL; /* nothing to write */
- fs->secondhalf = 1;
- } else { /* raw msgsm data */
- src = f->data + len;
- }
- if (src && (res = fwrite(src, 1, MSGSM_FRAME_SIZE, s->f)) != MSGSM_FRAME_SIZE) {
- ast_log(LOG_WARNING, "Bad write (%d/65): %s\n", res, strerror(errno));
- return -1;
- }
- update_header(s->f); /* XXX inefficient! */
- }
- return 0;
-}
-
-static int wav_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
-{
- off_t offset=0, distance, max;
- struct wavg_desc *s = (struct wavg_desc *)fs->_private;
-
- off_t min = MSGSM_DATA_OFFSET;
- off_t cur = ftello(fs->f);
- fseek(fs->f, 0, SEEK_END);
- max = ftello(fs->f); /* XXX ideally, should round correctly */
- /* Compute the distance in bytes, rounded to the block size */
- distance = (sample_offset/MSGSM_SAMPLES) * MSGSM_FRAME_SIZE;
- if (whence == SEEK_SET)
- offset = distance + min;
- else if (whence == SEEK_CUR || whence == SEEK_FORCECUR)
- offset = distance + cur;
- else if (whence == SEEK_END)
- offset = max - distance;
- /* always protect against seeking past end of header */
- if (offset < min)
- offset = min;
- if (whence != SEEK_FORCECUR) {
- if (offset > max)
- offset = max;
- } else if (offset > max) {
- int i;
- fseek(fs->f, 0, SEEK_END);
- for (i=0; i< (offset - max) / MSGSM_FRAME_SIZE; i++) {
- if (!fwrite(msgsm_silence, 1, MSGSM_FRAME_SIZE, fs->f)) {
- ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
- }
- }
- }
- s->secondhalf = 0;
- 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);
- /* since this will most likely be used later in play or record, lets stick
- * to that level of resolution, just even frames boundaries */
- return (offset - MSGSM_DATA_OFFSET)/MSGSM_FRAME_SIZE*MSGSM_SAMPLES;
-}
-
-static const struct ast_format wav49_f = {
- .name = "wav49",
- .exts = "WAV|wav49",
- .format = AST_FORMAT_GSM,
- .open = wav_open,
- .rewrite = wav_rewrite,
- .write = wav_write,
- .seek = wav_seek,
- .trunc = wav_trunc,
- .tell = wav_tell,
- .read = wav_read,
- .buf_size = 2*GSM_FRAME_SIZE + AST_FRIENDLY_OFFSET,
- .desc_size = sizeof(struct wavg_desc),
-};
-
-static int load_module(void)
-{
- return ast_format_register(&wav49_f);
-}
-
-static int unload_module(void)
-{
- return ast_format_unregister(wav49_f.name);
-}
-
-AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Microsoft WAV format (Proprietary GSM)");
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 14:20:07 +0000