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4dfd9d4800
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
281 lines
6.3 KiB
C
281 lines
6.3 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (c) 2004 - 2005, inAccess Networks
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*
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* Michael Manousos <manousos@inaccessnetworks.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 Headerless G.726 (16/24/32/40kbps) data format for Asterisk.
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*
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* File name extensions:
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* \arg 40 kbps: g726-40
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* \arg 32 kbps: g726-32
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* \arg 24 kbps: g726-24
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* \arg 16 kbps: g726-16
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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/options.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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#define RATE_40 0
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#define RATE_32 1
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#define RATE_24 2
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#define RATE_16 3
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/* We can only read/write chunks of FRAME_TIME ms G.726 data */
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#define FRAME_TIME 10 /* 10 ms size */
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#define BUF_SIZE (5*FRAME_TIME) /* max frame size in bytes ? */
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/* Frame sizes in bytes */
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static int frame_size[4] = {
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FRAME_TIME * 5,
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FRAME_TIME * 4,
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FRAME_TIME * 3,
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FRAME_TIME * 2
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};
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struct g726_desc {
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int rate; /* RATE_* defines */
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};
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/*
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* Rate dependant format functions (open, rewrite)
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*/
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static int g726_open(struct ast_filestream *tmp, int rate)
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{
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struct g726_desc *s = (struct g726_desc *)tmp->_private;
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s->rate = rate;
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if (option_debug)
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ast_log(LOG_DEBUG, "Created filestream G.726-%dk.\n",
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40 - s->rate * 8);
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return 0;
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}
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static int g726_40_open(struct ast_filestream *s)
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{
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return g726_open(s, RATE_40);
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}
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static int g726_32_open(struct ast_filestream *s)
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{
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return g726_open(s, RATE_32);
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}
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static int g726_24_open(struct ast_filestream *s)
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{
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return g726_open(s, RATE_24);
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}
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static int g726_16_open(struct ast_filestream *s)
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{
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return g726_open(s, RATE_16);
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}
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static int g726_40_rewrite(struct ast_filestream *s, const char *comment)
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{
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return g726_open(s, RATE_40);
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}
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static int g726_32_rewrite(struct ast_filestream *s, const char *comment)
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{
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return g726_open(s, RATE_32);
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}
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static int g726_24_rewrite(struct ast_filestream *s, const char *comment)
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{
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return g726_open(s, RATE_24);
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}
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static int g726_16_rewrite(struct ast_filestream *s, const char *comment)
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{
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return g726_open(s, RATE_16);
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}
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/*
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* Rate independent format functions (read, write)
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*/
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static struct ast_frame *g726_read(struct ast_filestream *s, int *whennext)
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{
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int res;
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struct g726_desc *fs = (struct g726_desc *)s->_private;
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/* Send a frame from the file to the appropriate channel */
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s->fr.frametype = AST_FRAME_VOICE;
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s->fr.subclass = AST_FORMAT_G726;
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s->fr.mallocd = 0;
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AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, frame_size[fs->rate]);
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s->fr.samples = 8 * FRAME_TIME;
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if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
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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;
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return &s->fr;
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}
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static int g726_write(struct ast_filestream *s, struct ast_frame *f)
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{
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int res;
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struct g726_desc *fs = (struct g726_desc *)s->_private;
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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_G726) {
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ast_log(LOG_WARNING, "Asked to write non-G726 frame (%d)!\n",
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f->subclass);
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return -1;
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}
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if (f->datalen % frame_size[fs->rate]) {
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ast_log(LOG_WARNING, "Invalid data length %d, should be multiple of %d\n",
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f->datalen, frame_size[fs->rate]);
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return -1;
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}
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if ((res = fwrite(f->data, 1, f->datalen, s->f)) != f->datalen) {
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ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n",
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res, frame_size[fs->rate], strerror(errno));
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return -1;
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}
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return 0;
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}
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static int g726_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
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{
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return -1;
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}
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static int g726_trunc(struct ast_filestream *fs)
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{
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return -1;
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}
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static off_t g726_tell(struct ast_filestream *fs)
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{
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return -1;
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}
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static const struct ast_format f[] = {
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{
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.name = "g726-40",
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.exts = "g726-40",
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.format = AST_FORMAT_G726,
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.open = g726_40_open,
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.rewrite = g726_40_rewrite,
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.write = g726_write,
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.seek = g726_seek,
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.trunc = g726_trunc,
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.tell = g726_tell,
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.read = g726_read,
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.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
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.desc_size = sizeof(struct g726_desc),
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},
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{
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.name = "g726-32",
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.exts = "g726-32",
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.format = AST_FORMAT_G726,
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.open = g726_32_open,
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.rewrite = g726_32_rewrite,
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.write = g726_write,
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.seek = g726_seek,
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.trunc = g726_trunc,
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.tell = g726_tell,
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.read = g726_read,
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.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
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.desc_size = sizeof(struct g726_desc),
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},
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{
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.name = "g726-24",
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.exts = "g726-24",
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.format = AST_FORMAT_G726,
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.open = g726_24_open,
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.rewrite = g726_24_rewrite,
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.write = g726_write,
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.seek = g726_seek,
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.trunc = g726_trunc,
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.tell = g726_tell,
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.read = g726_read,
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.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
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.desc_size = sizeof(struct g726_desc),
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},
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{
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.name = "g726-16",
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.exts = "g726-16",
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.format = AST_FORMAT_G726,
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.open = g726_16_open,
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.rewrite = g726_16_rewrite,
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.write = g726_write,
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.seek = g726_seek,
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.trunc = g726_trunc,
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.tell = g726_tell,
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.read = g726_read,
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.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
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.desc_size = sizeof(struct g726_desc),
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},
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{ .format = 0 } /* terminator */
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};
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static int load_module(void)
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{
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int i;
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for (i = 0; f[i].format ; i++) {
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if (ast_format_register(&f[i])) { /* errors are fatal */
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ast_log(LOG_WARNING, "Failed to register format %s.\n", f[i].name);
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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 unload_module(void)
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{
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int i;
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for (i = 0; f[i].format ; i++) {
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if (ast_format_unregister(f[i].name))
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ast_log(LOG_WARNING, "Failed to unregister format %s.\n", f[i].name);
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}
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return(0);
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}
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AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_FIRST, "Raw G.726 (16/24/32/40kbps) data",
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.load = load_module,
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.unload = unload_module,
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);
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