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A recent change to app_voicemail made it such that the module now assumes that all format modules are available while processing voicemail configuration. However, when autoloading modules, it was possible that app_voicemail was loaded before the format modules. Since format modules don't depend on anything, set a module load priority on them to ensure that they get loaded first when autoloading. This version of the patch is specific to Asterisk 1.4 and 1.6.0. These versions did not already support module load priority in the module API. This adds a trivial version of this which is just a module flag to include it in a pass before loading "everything". Thanks to mmichelson for the review! (closes issue #16412) Reported by: jiddings Tested by: russell Review: https://reviewboard.asterisk.org/r/445/ git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@233782 65c4cc65-6c06-0410-ace0-fbb531ad65f3
187 lines
4.8 KiB
C
187 lines
4.8 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Save to raw, headerless GSM data.
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* \arg File name extension: gsm
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* \ingroup formats
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include <unistd.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include "asterisk/lock.h"
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#include "asterisk/channel.h"
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#include "asterisk/file.h"
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#include "asterisk/logger.h"
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#include "asterisk/sched.h"
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#include "asterisk/module.h"
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#include "asterisk/endian.h"
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#include "msgsm.h"
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/* Some Ideas for this code came from makegsme.c by Jeffrey Chilton */
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/* Portions of the conversion code are by guido@sienanet.it */
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#define GSM_FRAME_SIZE 33
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#define GSM_SAMPLES 160
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/* silent gsm frame */
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/* begin binary data: */
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char gsm_silence[] = /* 33 */
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{0xD8,0x20,0xA2,0xE1,0x5A,0x50,0x00,0x49,0x24,0x92,0x49,0x24,0x50,0x00,0x49
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,0x24,0x92,0x49,0x24,0x50,0x00,0x49,0x24,0x92,0x49,0x24,0x50,0x00,0x49,0x24
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,0x92,0x49,0x24};
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/* end binary data. size = 33 bytes */
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static struct ast_frame *gsm_read(struct ast_filestream *s, int *whennext)
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{
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int res;
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s->fr.frametype = AST_FRAME_VOICE;
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s->fr.subclass = AST_FORMAT_GSM;
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AST_FRAME_SET_BUFFER(&(s->fr), s->buf, AST_FRIENDLY_OFFSET, GSM_FRAME_SIZE)
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s->fr.mallocd = 0;
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if ((res = fread(s->fr.data, 1, GSM_FRAME_SIZE, s->f)) != GSM_FRAME_SIZE) {
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if (res)
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ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
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return NULL;
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}
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*whennext = s->fr.samples = GSM_SAMPLES;
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return &s->fr;
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}
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static int gsm_write(struct ast_filestream *fs, struct ast_frame *f)
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{
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int res;
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unsigned char gsm[2*GSM_FRAME_SIZE];
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if (f->frametype != AST_FRAME_VOICE) {
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ast_log(LOG_WARNING, "Asked to write non-voice frame!\n");
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return -1;
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}
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if (f->subclass != AST_FORMAT_GSM) {
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ast_log(LOG_WARNING, "Asked to write non-GSM frame (%d)!\n", f->subclass);
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return -1;
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}
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if (!(f->datalen % 65)) {
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/* This is in MSGSM format, need to be converted */
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int len=0;
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while(len < f->datalen) {
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conv65(f->data + len, gsm);
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if ((res = fwrite(gsm, 1, 2*GSM_FRAME_SIZE, fs->f)) != 2*GSM_FRAME_SIZE) {
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ast_log(LOG_WARNING, "Bad write (%d/66): %s\n", res, strerror(errno));
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return -1;
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}
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len += 65;
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}
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} else {
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if (f->datalen % GSM_FRAME_SIZE) {
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ast_log(LOG_WARNING, "Invalid data length, %d, should be multiple of 33\n", f->datalen);
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return -1;
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}
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if ((res = fwrite(f->data, 1, f->datalen, fs->f)) != f->datalen) {
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ast_log(LOG_WARNING, "Bad write (%d/33): %s\n", res, strerror(errno));
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return -1;
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}
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}
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return 0;
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}
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static int gsm_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
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{
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off_t offset=0,min,cur,max,distance;
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min = 0;
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cur = ftello(fs->f);
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fseeko(fs->f, 0, SEEK_END);
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max = ftello(fs->f);
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/* have to fudge to frame here, so not fully to sample */
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distance = (sample_offset/GSM_SAMPLES) * GSM_FRAME_SIZE;
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if(whence == SEEK_SET)
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offset = distance;
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else if(whence == SEEK_CUR || whence == SEEK_FORCECUR)
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offset = distance + cur;
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else if(whence == SEEK_END)
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offset = max - distance;
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/* Always protect against seeking past the begining. */
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offset = (offset < min)?min:offset;
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if (whence != SEEK_FORCECUR) {
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offset = (offset > max)?max:offset;
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} else if (offset > max) {
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int i;
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fseeko(fs->f, 0, SEEK_END);
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for (i=0; i< (offset - max) / GSM_FRAME_SIZE; i++) {
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if (!fwrite(gsm_silence, 1, GSM_FRAME_SIZE, fs->f)) {
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ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
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}
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}
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}
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return fseeko(fs->f, offset, SEEK_SET);
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}
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static int gsm_trunc(struct ast_filestream *fs)
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{
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return ftruncate(fileno(fs->f), ftello(fs->f));
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}
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static off_t gsm_tell(struct ast_filestream *fs)
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{
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off_t offset = ftello(fs->f);
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return (offset/GSM_FRAME_SIZE)*GSM_SAMPLES;
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}
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static const struct ast_format gsm_f = {
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.name = "gsm",
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.exts = "gsm",
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.format = AST_FORMAT_GSM,
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.write = gsm_write,
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.seek = gsm_seek,
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.trunc = gsm_trunc,
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.tell = gsm_tell,
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.read = gsm_read,
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.buf_size = 2*GSM_FRAME_SIZE + AST_FRIENDLY_OFFSET, /* 2 gsm frames */
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};
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static int load_module(void)
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{
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return ast_format_register(&gsm_f);
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}
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static int unload_module(void)
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{
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return ast_format_unregister(gsm_f.name);
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}
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AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_FIRST, "Raw GSM data",
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.load = load_module,
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.unload = unload_module,
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);
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