Fix a number of other places where the number of samples in a G722 frame was not properly handled because of various reasons. main/rtp.c: - When a G722 frame is read from the smoother, the number of samples in the frame must be divided by 2 before being sent out over the network. Even though G722 is 16 kHz, an error in some previous spec has made it so that we have to list the number of samples such as if it was 8 kHz. main/file.c: - When scheduling the next time to expect a frame, take into account that the format of the file we're reading from may not be 8 kHz. codecs/codec_g722.c: - When converting from G722 to slinear, g722_decode() expects its samples parameter to be in the silly (real samples / 2) format. Make it so. - When converting from slinear to G722, properly set the number of samples in the frame to be the number of bytes of output * 2. formats/format_pcm.c: - This format module handles G722, among a number of other formats. However, the read() and seek() functions did not account for the fact that G722 has 2 samples per byte. (closes issue #12130, reported by rickross, patched by me) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@106501 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1288 lines
33 KiB
C
1288 lines
33 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2006, 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 Generic File Format Support.
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*
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* \author Mark Spencer <markster@digium.com>
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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 <dirent.h>
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#include <sys/stat.h>
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#include "asterisk/_private.h" /* declare ast_file_init() */
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#include "asterisk/paths.h" /* use ast_config_AST_DATA_DIR */
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#include "asterisk/mod_format.h"
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#include "asterisk/cli.h"
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#include "asterisk/channel.h"
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#include "asterisk/sched.h"
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#include "asterisk/translate.h"
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#include "asterisk/utils.h"
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#include "asterisk/lock.h"
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#include "asterisk/app.h"
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#include "asterisk/pbx.h"
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#include "asterisk/linkedlists.h"
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#include "asterisk/module.h"
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/*
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* The following variable controls the layout of localized sound files.
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* If 0, use the historical layout with prefix just before the filename
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* (i.e. digits/en/1.gsm , digits/it/1.gsm or default to digits/1.gsm),
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* if 1 put the prefix at the beginning of the filename
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* (i.e. en/digits/1.gsm, it/digits/1.gsm or default to digits/1.gsm).
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* The latter permits a language to be entirely in one directory.
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*/
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int ast_language_is_prefix = 1;
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static AST_RWLIST_HEAD_STATIC(formats, ast_format);
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int __ast_format_register(const struct ast_format *f, struct ast_module *mod)
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{
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struct ast_format *tmp;
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AST_RWLIST_WRLOCK(&formats);
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AST_RWLIST_TRAVERSE(&formats, tmp, list) {
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if (!strcasecmp(f->name, tmp->name)) {
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AST_RWLIST_UNLOCK(&formats);
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ast_log(LOG_WARNING, "Tried to register '%s' format, already registered\n", f->name);
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return -1;
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}
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}
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if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
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AST_RWLIST_UNLOCK(&formats);
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return -1;
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}
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*tmp = *f;
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tmp->module = mod;
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if (tmp->buf_size) {
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/*
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* Align buf_size properly, rounding up to the machine-specific
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* alignment for pointers.
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*/
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struct _test_align { void *a, *b; } p;
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int align = (char *)&p.b - (char *)&p.a;
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tmp->buf_size = ((f->buf_size + align - 1) / align) * align;
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}
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memset(&tmp->list, 0, sizeof(tmp->list));
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AST_RWLIST_INSERT_HEAD(&formats, tmp, list);
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AST_RWLIST_UNLOCK(&formats);
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ast_verb(2, "Registered file format %s, extension(s) %s\n", f->name, f->exts);
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return 0;
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}
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int ast_format_unregister(const char *name)
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{
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struct ast_format *tmp;
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int res = -1;
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AST_RWLIST_WRLOCK(&formats);
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AST_RWLIST_TRAVERSE_SAFE_BEGIN(&formats, tmp, list) {
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if (!strcasecmp(name, tmp->name)) {
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AST_RWLIST_REMOVE_CURRENT(list);
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ast_free(tmp);
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res = 0;
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}
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}
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AST_RWLIST_TRAVERSE_SAFE_END;
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AST_RWLIST_UNLOCK(&formats);
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if (!res)
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ast_verb(2, "Unregistered format %s\n", name);
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else
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ast_log(LOG_WARNING, "Tried to unregister format %s, already unregistered\n", name);
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return res;
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}
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int ast_stopstream(struct ast_channel *tmp)
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{
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ast_channel_lock(tmp);
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/* Stop a running stream if there is one */
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if (tmp->stream) {
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ast_closestream(tmp->stream);
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tmp->stream = NULL;
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if (tmp->oldwriteformat && ast_set_write_format(tmp, tmp->oldwriteformat))
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ast_log(LOG_WARNING, "Unable to restore format back to %d\n", tmp->oldwriteformat);
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}
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/* Stop the video stream too */
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if (tmp->vstream != NULL) {
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ast_closestream(tmp->vstream);
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tmp->vstream = NULL;
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}
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ast_channel_unlock(tmp);
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return 0;
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}
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int ast_writestream(struct ast_filestream *fs, struct ast_frame *f)
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{
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int res = -1;
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int alt = 0;
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if (f->frametype == AST_FRAME_VIDEO) {
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if (fs->fmt->format & AST_FORMAT_AUDIO_MASK) {
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/* This is the audio portion. Call the video one... */
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if (!fs->vfs && fs->filename) {
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const char *type = ast_getformatname(f->subclass & ~0x1);
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fs->vfs = ast_writefile(fs->filename, type, NULL, fs->flags, 0, fs->mode);
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ast_debug(1, "Opened video output file\n");
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}
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if (fs->vfs)
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return ast_writestream(fs->vfs, f);
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/* else ignore */
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return 0;
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} else {
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/* Might / might not have mark set */
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alt = 1;
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}
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} else if (f->frametype != AST_FRAME_VOICE) {
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ast_log(LOG_WARNING, "Tried to write non-voice frame\n");
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return -1;
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}
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if (((fs->fmt->format | alt) & f->subclass) == f->subclass) {
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res = fs->fmt->write(fs, f);
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if (res < 0)
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ast_log(LOG_WARNING, "Natural write failed\n");
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else if (res > 0)
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ast_log(LOG_WARNING, "Huh??\n");
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} else {
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/* XXX If they try to send us a type of frame that isn't the normal frame, and isn't
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the one we've setup a translator for, we do the "wrong thing" XXX */
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if (fs->trans && f->subclass != fs->lastwriteformat) {
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ast_translator_free_path(fs->trans);
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fs->trans = NULL;
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}
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if (!fs->trans)
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fs->trans = ast_translator_build_path(fs->fmt->format, f->subclass);
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if (!fs->trans)
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ast_log(LOG_WARNING, "Unable to translate to format %s, source format %s\n",
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fs->fmt->name, ast_getformatname(f->subclass));
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else {
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struct ast_frame *trf;
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fs->lastwriteformat = f->subclass;
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/* Get the translated frame but don't consume the original in case they're using it on another stream */
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trf = ast_translate(fs->trans, f, 0);
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if (trf) {
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res = fs->fmt->write(fs, trf);
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ast_frfree(trf);
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if (res)
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ast_log(LOG_WARNING, "Translated frame write failed\n");
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} else
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res = 0;
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}
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}
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return res;
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}
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static int copy(const char *infile, const char *outfile)
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{
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int ifd, ofd, len;
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char buf[4096]; /* XXX make it lerger. */
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if ((ifd = open(infile, O_RDONLY)) < 0) {
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ast_log(LOG_WARNING, "Unable to open %s in read-only mode\n", infile);
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return -1;
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}
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if ((ofd = open(outfile, O_WRONLY | O_TRUNC | O_CREAT, AST_FILE_MODE)) < 0) {
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ast_log(LOG_WARNING, "Unable to open %s in write-only mode\n", outfile);
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close(ifd);
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return -1;
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}
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while ( (len = read(ifd, buf, sizeof(buf)) ) ) {
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int res;
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if (len < 0) {
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ast_log(LOG_WARNING, "Read failed on %s: %s\n", infile, strerror(errno));
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break;
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}
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/* XXX handle partial writes */
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res = write(ofd, buf, len);
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if (res != len) {
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ast_log(LOG_WARNING, "Write failed on %s (%d of %d): %s\n", outfile, res, len, strerror(errno));
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len = -1; /* error marker */
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break;
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}
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}
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close(ifd);
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close(ofd);
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if (len < 0) {
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unlink(outfile);
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return -1; /* error */
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}
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return 0; /* success */
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}
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/*!
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* \brief construct a filename. Absolute pathnames are preserved,
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* relative names are prefixed by the sounds/ directory.
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* The wav49 suffix is replaced by 'WAV'.
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* Returns a malloc'ed string to be freed by the caller.
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*/
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static char *build_filename(const char *filename, const char *ext)
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{
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char *fn = NULL;
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if (!strcmp(ext, "wav49"))
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ext = "WAV";
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if (filename[0] == '/')
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asprintf(&fn, "%s.%s", filename, ext);
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else
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asprintf(&fn, "%s/sounds/%s.%s",
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ast_config_AST_DATA_DIR, filename, ext);
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return fn;
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}
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/* compare type against the list 'exts' */
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/* XXX need a better algorithm */
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static int exts_compare(const char *exts, const char *type)
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{
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char tmp[256];
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char *stringp = tmp, *ext;
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ast_copy_string(tmp, exts, sizeof(tmp));
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while ((ext = strsep(&stringp, "|"))) {
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if (!strcmp(ext, type))
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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 struct ast_filestream *get_filestream(struct ast_format *fmt, FILE *bfile)
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{
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struct ast_filestream *s;
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int l = sizeof(*s) + fmt->buf_size + fmt->desc_size; /* total allocation size */
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if ( (s = ast_calloc(1, l)) == NULL)
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return NULL;
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s->fmt = fmt;
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s->f = bfile;
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if (fmt->desc_size)
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s->_private = ((char *)(s + 1)) + fmt->buf_size;
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if (fmt->buf_size)
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s->buf = (char *)(s + 1);
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s->fr.src = fmt->name;
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return s;
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}
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/*
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* Default implementations of open and rewrite.
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* Only use them if you don't have expensive stuff to do.
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*/
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enum wrap_fn { WRAP_OPEN, WRAP_REWRITE };
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static int fn_wrapper(struct ast_filestream *s, const char *comment, enum wrap_fn mode)
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{
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struct ast_format *f = s->fmt;
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int ret = -1;
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if (mode == WRAP_OPEN && f->open && f->open(s))
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ast_log(LOG_WARNING, "Unable to open format %s\n", f->name);
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else if (mode == WRAP_REWRITE && f->rewrite && f->rewrite(s, comment))
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ast_log(LOG_WARNING, "Unable to rewrite format %s\n", f->name);
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else {
|
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/* preliminary checks succeed. update usecount */
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ast_module_ref(f->module);
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ret = 0;
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}
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return ret;
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}
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static int rewrite_wrapper(struct ast_filestream *s, const char *comment)
|
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{
|
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return fn_wrapper(s, comment, WRAP_REWRITE);
|
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}
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static int open_wrapper(struct ast_filestream *s)
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{
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return fn_wrapper(s, NULL, WRAP_OPEN);
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}
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enum file_action {
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ACTION_EXISTS = 1, /* return matching format if file exists, 0 otherwise */
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ACTION_DELETE, /* delete file, return 0 on success, -1 on error */
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ACTION_RENAME, /* rename file. return 0 on success, -1 on error */
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ACTION_OPEN,
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ACTION_COPY /* copy file. return 0 on success, -1 on error */
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};
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/*!
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* \brief perform various actions on a file. Second argument
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* arg2 depends on the command:
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* unused for EXISTS and DELETE
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* destination file name (const char *) for COPY and RENAME
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* struct ast_channel * for OPEN
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* if fmt is NULL, OPEN will return the first matching entry,
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* whereas other functions will run on all matching entries.
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*/
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static int ast_filehelper(const char *filename, const void *arg2, const char *fmt, const enum file_action action)
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{
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struct ast_format *f;
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int res = (action == ACTION_EXISTS) ? 0 : -1;
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AST_RWLIST_RDLOCK(&formats);
|
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/* Check for a specific format */
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AST_RWLIST_TRAVERSE(&formats, f, list) {
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char *stringp, *ext = NULL;
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|
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if (fmt && !exts_compare(f->exts, fmt))
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continue;
|
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|
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/* Look for a file matching the supported extensions.
|
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* The file must exist, and for OPEN, must match
|
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* one of the formats supported by the channel.
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*/
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stringp = ast_strdupa(f->exts); /* this is in the stack so does not need to be freed */
|
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while ( (ext = strsep(&stringp, "|")) ) {
|
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struct stat st;
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char *fn = build_filename(filename, ext);
|
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|
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if (fn == NULL)
|
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continue;
|
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|
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if ( stat(fn, &st) ) { /* file not existent */
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ast_free(fn);
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continue;
|
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}
|
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/* for 'OPEN' we need to be sure that the format matches
|
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* what the channel can process
|
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*/
|
|
if (action == ACTION_OPEN) {
|
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struct ast_channel *chan = (struct ast_channel *)arg2;
|
|
FILE *bfile;
|
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struct ast_filestream *s;
|
|
|
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if ( !(chan->writeformat & f->format) &&
|
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!(f->format & AST_FORMAT_AUDIO_MASK && fmt)) {
|
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ast_free(fn);
|
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continue; /* not a supported format */
|
|
}
|
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if ( (bfile = fopen(fn, "r")) == NULL) {
|
|
ast_free(fn);
|
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continue; /* cannot open file */
|
|
}
|
|
s = get_filestream(f, bfile);
|
|
if (!s) {
|
|
fclose(bfile);
|
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ast_free(fn); /* cannot allocate descriptor */
|
|
continue;
|
|
}
|
|
if (open_wrapper(s)) {
|
|
fclose(bfile);
|
|
ast_free(fn);
|
|
ast_free(s);
|
|
continue; /* cannot run open on file */
|
|
}
|
|
/* ok this is good for OPEN */
|
|
res = 1; /* found */
|
|
s->lasttimeout = -1;
|
|
s->fmt = f;
|
|
s->trans = NULL;
|
|
s->filename = NULL;
|
|
if (s->fmt->format & AST_FORMAT_AUDIO_MASK) {
|
|
if (chan->stream)
|
|
ast_closestream(chan->stream);
|
|
chan->stream = s;
|
|
} else {
|
|
if (chan->vstream)
|
|
ast_closestream(chan->vstream);
|
|
chan->vstream = s;
|
|
}
|
|
ast_free(fn);
|
|
break;
|
|
}
|
|
switch (action) {
|
|
case ACTION_OPEN:
|
|
break; /* will never get here */
|
|
|
|
case ACTION_EXISTS: /* return the matching format */
|
|
res |= f->format;
|
|
break;
|
|
|
|
case ACTION_DELETE:
|
|
if ( (res = unlink(fn)) )
|
|
ast_log(LOG_WARNING, "unlink(%s) failed: %s\n", fn, strerror(errno));
|
|
break;
|
|
|
|
case ACTION_RENAME:
|
|
case ACTION_COPY: {
|
|
char *nfn = build_filename((const char *)arg2, ext);
|
|
if (!nfn)
|
|
ast_log(LOG_WARNING, "Out of memory\n");
|
|
else {
|
|
res = action == ACTION_COPY ? copy(fn, nfn) : rename(fn, nfn);
|
|
if (res)
|
|
ast_log(LOG_WARNING, "%s(%s,%s) failed: %s\n",
|
|
action == ACTION_COPY ? "copy" : "rename",
|
|
fn, nfn, strerror(errno));
|
|
ast_free(nfn);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
ast_log(LOG_WARNING, "Unknown helper %d\n", action);
|
|
}
|
|
ast_free(fn);
|
|
}
|
|
}
|
|
AST_RWLIST_UNLOCK(&formats);
|
|
return res;
|
|
}
|
|
|
|
static int is_absolute_path(const char *filename)
|
|
{
|
|
return filename[0] == '/';
|
|
}
|
|
|
|
static int fileexists_test(const char *filename, const char *fmt, const char *lang,
|
|
char *buf, int buflen)
|
|
{
|
|
if (buf == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
if (ast_language_is_prefix) { /* new layout */
|
|
if (lang) {
|
|
snprintf(buf, buflen, "%s/%s", lang, filename);
|
|
} else {
|
|
snprintf(buf, buflen, "%s", filename);
|
|
}
|
|
} else { /* old layout */
|
|
strcpy(buf, filename); /* first copy the full string */
|
|
if (lang) {
|
|
/* insert the language and suffix if needed */
|
|
const char *c = strrchr(filename, '/');
|
|
int offset = c ? c - filename + 1 : 0; /* points right after the last '/' */
|
|
snprintf(buf + offset, buflen - offset, "%s/%s", lang, filename + offset);
|
|
}
|
|
}
|
|
|
|
return ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
|
|
}
|
|
|
|
/*!
|
|
* \brief helper routine to locate a file with a given format
|
|
* and language preference.
|
|
* Try preflang, preflang with stripped '_' suffix, or NULL.
|
|
* In the standard asterisk, language goes just before the last component.
|
|
* In an alternative configuration, the language should be a prefix
|
|
* to the actual filename.
|
|
*
|
|
* The last parameter(s) point to a buffer of sufficient size,
|
|
* which on success is filled with the matching filename.
|
|
*/
|
|
static int fileexists_core(const char *filename, const char *fmt, const char *preflang,
|
|
char *buf, int buflen)
|
|
{
|
|
int res = -1;
|
|
char *lang = NULL;
|
|
|
|
if (buf == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
if (is_absolute_path(filename)) {
|
|
ast_copy_string(buf, filename, buflen);
|
|
return ast_filehelper(buf, NULL, fmt, ACTION_EXISTS);
|
|
}
|
|
|
|
/* We try languages in the following order:
|
|
* preflang (may include dialect)
|
|
* lang (preflang without dialect - if any)
|
|
* <none>
|
|
* default (unless the same as preflang or lang without dialect)
|
|
*/
|
|
|
|
/* Try preferred language */
|
|
if (!ast_strlen_zero(preflang)) {
|
|
/* try the preflang exactly as it was requested */
|
|
if ((res = fileexists_test(filename, fmt, preflang, buf, buflen)) > 0) {
|
|
return res;
|
|
} else {
|
|
/* try without a dialect */
|
|
char *postfix = NULL;
|
|
postfix = lang = ast_strdupa(preflang);
|
|
|
|
strsep(&postfix, "_");
|
|
if (postfix) {
|
|
if ((res = fileexists_test(filename, fmt, lang, buf, buflen)) > 0) {
|
|
return res;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Try without any language */
|
|
if ((res = fileexists_test(filename, fmt, NULL, buf, buflen)) > 0) {
|
|
return res;
|
|
}
|
|
|
|
/* Finally try the default language unless it was already tried before */
|
|
if ((ast_strlen_zero(preflang) || strcmp(preflang, DEFAULT_LANGUAGE)) && (ast_strlen_zero(lang) || strcmp(lang, DEFAULT_LANGUAGE))) {
|
|
if ((res = fileexists_test(filename, fmt, DEFAULT_LANGUAGE, buf, buflen)) > 0) {
|
|
return res;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct ast_filestream *ast_openstream(struct ast_channel *chan, const char *filename, const char *preflang)
|
|
{
|
|
return ast_openstream_full(chan, filename, preflang, 0);
|
|
}
|
|
|
|
struct ast_filestream *ast_openstream_full(struct ast_channel *chan, const char *filename, const char *preflang, int asis)
|
|
{
|
|
/*
|
|
* Use fileexists_core() to find a file in a compatible
|
|
* language and format, set up a suitable translator,
|
|
* and open the stream.
|
|
*/
|
|
int fmts, res, buflen;
|
|
char *buf;
|
|
|
|
if (!asis) {
|
|
/* do this first, otherwise we detect the wrong writeformat */
|
|
ast_stopstream(chan);
|
|
if (chan->generator)
|
|
ast_deactivate_generator(chan);
|
|
}
|
|
if (preflang == NULL)
|
|
preflang = "";
|
|
buflen = strlen(preflang) + strlen(filename) + 4;
|
|
buf = alloca(buflen);
|
|
if (buf == NULL)
|
|
return NULL;
|
|
fmts = fileexists_core(filename, NULL, preflang, buf, buflen);
|
|
if (fmts > 0)
|
|
fmts &= AST_FORMAT_AUDIO_MASK;
|
|
if (fmts < 1) {
|
|
ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
|
|
return NULL;
|
|
}
|
|
chan->oldwriteformat = chan->writeformat;
|
|
/* Set the channel to a format we can work with */
|
|
res = ast_set_write_format(chan, fmts);
|
|
res = ast_filehelper(buf, chan, NULL, ACTION_OPEN);
|
|
if (res >= 0)
|
|
return chan->stream;
|
|
return NULL;
|
|
}
|
|
|
|
struct ast_filestream *ast_openvstream(struct ast_channel *chan, const char *filename, const char *preflang)
|
|
{
|
|
/* As above, but for video. But here we don't have translators
|
|
* so we must enforce a format.
|
|
*/
|
|
unsigned int format;
|
|
char *buf;
|
|
int buflen;
|
|
|
|
if (preflang == NULL)
|
|
preflang = "";
|
|
buflen = strlen(preflang) + strlen(filename) + 4;
|
|
buf = alloca(buflen);
|
|
if (buf == NULL)
|
|
return NULL;
|
|
|
|
for (format = AST_FORMAT_AUDIO_MASK + 1; format <= AST_FORMAT_VIDEO_MASK; format = format << 1) {
|
|
int fd;
|
|
const char *fmt;
|
|
|
|
if (!(chan->nativeformats & format))
|
|
continue;
|
|
fmt = ast_getformatname(format);
|
|
if ( fileexists_core(filename, fmt, preflang, buf, buflen) < 1) /* no valid format */
|
|
continue;
|
|
fd = ast_filehelper(buf, chan, fmt, ACTION_OPEN);
|
|
if (fd >= 0)
|
|
return chan->vstream;
|
|
ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
struct ast_frame *ast_readframe(struct ast_filestream *s)
|
|
{
|
|
struct ast_frame *f = NULL;
|
|
int whennext = 0;
|
|
if (s && s->fmt)
|
|
f = s->fmt->read(s, &whennext);
|
|
return f;
|
|
}
|
|
|
|
enum fsread_res {
|
|
FSREAD_FAILURE,
|
|
FSREAD_SUCCESS_SCHED,
|
|
FSREAD_SUCCESS_NOSCHED,
|
|
};
|
|
|
|
static int ast_fsread_audio(const void *data);
|
|
|
|
static enum fsread_res ast_readaudio_callback(struct ast_filestream *s)
|
|
{
|
|
int whennext = 0;
|
|
|
|
while (!whennext) {
|
|
struct ast_frame *fr;
|
|
|
|
if (s->orig_chan_name && strcasecmp(s->owner->name, s->orig_chan_name))
|
|
goto return_failure;
|
|
|
|
fr = s->fmt->read(s, &whennext);
|
|
if (!fr /* stream complete */ || ast_write(s->owner, fr) /* error writing */) {
|
|
if (fr)
|
|
ast_log(LOG_WARNING, "Failed to write frame\n");
|
|
goto return_failure;
|
|
}
|
|
}
|
|
if (whennext != s->lasttimeout) {
|
|
#ifdef HAVE_ZAPTEL
|
|
if (s->owner->timingfd > -1)
|
|
ast_settimeout(s->owner, whennext, ast_fsread_audio, s);
|
|
else
|
|
#endif
|
|
s->owner->streamid = ast_sched_add(s->owner->sched,
|
|
whennext / (ast_format_rate(s->fmt->format) / 1000), ast_fsread_audio, s);
|
|
s->lasttimeout = whennext;
|
|
return FSREAD_SUCCESS_NOSCHED;
|
|
}
|
|
return FSREAD_SUCCESS_SCHED;
|
|
|
|
return_failure:
|
|
s->owner->streamid = -1;
|
|
#ifdef HAVE_ZAPTEL
|
|
ast_settimeout(s->owner, 0, NULL, NULL);
|
|
#endif
|
|
return FSREAD_FAILURE;
|
|
}
|
|
|
|
static int ast_fsread_audio(const void *data)
|
|
{
|
|
struct ast_filestream *fs = (struct ast_filestream *)data;
|
|
enum fsread_res res;
|
|
|
|
res = ast_readaudio_callback(fs);
|
|
|
|
if (res == FSREAD_SUCCESS_SCHED)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ast_fsread_video(const void *data);
|
|
|
|
static enum fsread_res ast_readvideo_callback(struct ast_filestream *s)
|
|
{
|
|
int whennext = 0;
|
|
|
|
while (!whennext) {
|
|
struct ast_frame *fr = s->fmt->read(s, &whennext);
|
|
if (!fr || ast_write(s->owner, fr)) { /* no stream or error, as above */
|
|
if (fr)
|
|
ast_log(LOG_WARNING, "Failed to write frame\n");
|
|
s->owner->vstreamid = -1;
|
|
return FSREAD_FAILURE;
|
|
}
|
|
}
|
|
|
|
if (whennext != s->lasttimeout) {
|
|
s->owner->vstreamid = ast_sched_add(s->owner->sched,
|
|
whennext / (ast_format_rate(s->fmt->format) / 1000),
|
|
ast_fsread_video, s);
|
|
s->lasttimeout = whennext;
|
|
return FSREAD_SUCCESS_NOSCHED;
|
|
}
|
|
|
|
return FSREAD_SUCCESS_SCHED;
|
|
}
|
|
|
|
static int ast_fsread_video(const void *data)
|
|
{
|
|
struct ast_filestream *fs = (struct ast_filestream *)data;
|
|
enum fsread_res res;
|
|
|
|
res = ast_readvideo_callback(fs);
|
|
|
|
if (res == FSREAD_SUCCESS_SCHED)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ast_applystream(struct ast_channel *chan, struct ast_filestream *s)
|
|
{
|
|
s->owner = chan;
|
|
return 0;
|
|
}
|
|
|
|
int ast_playstream(struct ast_filestream *s)
|
|
{
|
|
enum fsread_res res;
|
|
|
|
if (s->fmt->format & AST_FORMAT_AUDIO_MASK)
|
|
res = ast_readaudio_callback(s);
|
|
else
|
|
res = ast_readvideo_callback(s);
|
|
|
|
return (res == FSREAD_FAILURE) ? -1 : 0;
|
|
}
|
|
|
|
int ast_seekstream(struct ast_filestream *fs, off_t sample_offset, int whence)
|
|
{
|
|
return fs->fmt->seek(fs, sample_offset, whence);
|
|
}
|
|
|
|
int ast_truncstream(struct ast_filestream *fs)
|
|
{
|
|
return fs->fmt->trunc(fs);
|
|
}
|
|
|
|
off_t ast_tellstream(struct ast_filestream *fs)
|
|
{
|
|
return fs->fmt->tell(fs);
|
|
}
|
|
|
|
int ast_stream_fastforward(struct ast_filestream *fs, off_t ms)
|
|
{
|
|
return ast_seekstream(fs, ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
|
|
}
|
|
|
|
int ast_stream_rewind(struct ast_filestream *fs, off_t ms)
|
|
{
|
|
return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
|
|
}
|
|
|
|
int ast_closestream(struct ast_filestream *f)
|
|
{
|
|
char *cmd = NULL;
|
|
size_t size = 0;
|
|
/* Stop a running stream if there is one */
|
|
if (f->owner) {
|
|
if (f->fmt->format & AST_FORMAT_AUDIO_MASK) {
|
|
f->owner->stream = NULL;
|
|
AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
|
|
#ifdef HAVE_ZAPTEL
|
|
ast_settimeout(f->owner, 0, NULL, NULL);
|
|
#endif
|
|
} else {
|
|
f->owner->vstream = NULL;
|
|
AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
|
|
}
|
|
}
|
|
/* destroy the translator on exit */
|
|
if (f->trans)
|
|
ast_translator_free_path(f->trans);
|
|
|
|
if (f->realfilename && f->filename) {
|
|
size = strlen(f->filename) + strlen(f->realfilename) + 15;
|
|
cmd = alloca(size);
|
|
memset(cmd, 0, size);
|
|
snprintf(cmd, size, "/bin/mv -f %s %s", f->filename, f->realfilename);
|
|
ast_safe_system(cmd);
|
|
}
|
|
|
|
if (f->filename)
|
|
ast_free(f->filename);
|
|
if (f->realfilename)
|
|
ast_free(f->realfilename);
|
|
if (f->fmt->close)
|
|
f->fmt->close(f);
|
|
fclose(f->f);
|
|
if (f->vfs)
|
|
ast_closestream(f->vfs);
|
|
if (f->orig_chan_name)
|
|
free((void *) f->orig_chan_name);
|
|
ast_module_unref(f->fmt->module);
|
|
ast_free(f);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Look the various language-specific places where a file could exist.
|
|
*/
|
|
int ast_fileexists(const char *filename, const char *fmt, const char *preflang)
|
|
{
|
|
char *buf;
|
|
int buflen;
|
|
|
|
if (preflang == NULL)
|
|
preflang = "";
|
|
buflen = strlen(preflang) + strlen(filename) + 4; /* room for everything */
|
|
buf = alloca(buflen);
|
|
if (buf == NULL)
|
|
return 0;
|
|
return fileexists_core(filename, fmt, preflang, buf, buflen);
|
|
}
|
|
|
|
int ast_filedelete(const char *filename, const char *fmt)
|
|
{
|
|
return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
|
|
}
|
|
|
|
int ast_filerename(const char *filename, const char *filename2, const char *fmt)
|
|
{
|
|
return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
|
|
}
|
|
|
|
int ast_filecopy(const char *filename, const char *filename2, const char *fmt)
|
|
{
|
|
return ast_filehelper(filename, filename2, fmt, ACTION_COPY);
|
|
}
|
|
|
|
int ast_streamfile(struct ast_channel *chan, const char *filename, const char *preflang)
|
|
{
|
|
struct ast_filestream *fs;
|
|
struct ast_filestream *vfs=NULL;
|
|
char fmt[256];
|
|
|
|
fs = ast_openstream(chan, filename, preflang);
|
|
if (fs)
|
|
vfs = ast_openvstream(chan, filename, preflang);
|
|
if (vfs) {
|
|
ast_debug(1, "Ooh, found a video stream, too, format %s\n", ast_getformatname(vfs->fmt->format));
|
|
}
|
|
if (fs){
|
|
int res;
|
|
if (ast_test_flag(chan, AST_FLAG_MASQ_NOSTREAM))
|
|
fs->orig_chan_name = ast_strdup(chan->name);
|
|
if (ast_applystream(chan, fs))
|
|
return -1;
|
|
if (vfs && ast_applystream(chan, vfs))
|
|
return -1;
|
|
res = ast_playstream(fs);
|
|
if (!res && vfs)
|
|
res = ast_playstream(vfs);
|
|
ast_verb(3, "<%s> Playing '%s.%s' (language '%s')\n", chan->name, filename, ast_getformatname(chan->writeformat), preflang ? preflang : "default");
|
|
|
|
return res;
|
|
}
|
|
ast_log(LOG_WARNING, "Unable to open %s (format %s): %s\n", filename, ast_getformatname_multiple(fmt, sizeof(fmt), chan->nativeformats), strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
struct ast_filestream *ast_readfile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
|
|
{
|
|
FILE *bfile;
|
|
struct ast_format *f;
|
|
struct ast_filestream *fs = NULL;
|
|
char *fn;
|
|
int format_found = 0;
|
|
|
|
AST_RWLIST_RDLOCK(&formats);
|
|
|
|
AST_RWLIST_TRAVERSE(&formats, f, list) {
|
|
fs = NULL;
|
|
if (!exts_compare(f->exts, type))
|
|
continue;
|
|
else
|
|
format_found = 1;
|
|
|
|
fn = build_filename(filename, type);
|
|
errno = 0;
|
|
bfile = fopen(fn, "r");
|
|
|
|
if (!bfile || (fs = get_filestream(f, bfile)) == NULL || open_wrapper(fs) ) {
|
|
ast_log(LOG_WARNING, "Unable to open %s\n", fn);
|
|
if (fs)
|
|
ast_free(fs);
|
|
if (bfile)
|
|
fclose(bfile);
|
|
ast_free(fn);
|
|
break;
|
|
}
|
|
/* found it */
|
|
fs->trans = NULL;
|
|
fs->fmt = f;
|
|
fs->flags = flags;
|
|
fs->mode = mode;
|
|
fs->filename = ast_strdup(filename);
|
|
fs->vfs = NULL;
|
|
break;
|
|
}
|
|
|
|
AST_RWLIST_UNLOCK(&formats);
|
|
if (!format_found)
|
|
ast_log(LOG_WARNING, "No such format '%s'\n", type);
|
|
|
|
return fs;
|
|
}
|
|
|
|
struct ast_filestream *ast_writefile(const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
|
|
{
|
|
int fd, myflags = 0;
|
|
/* compiler claims this variable can be used before initialization... */
|
|
FILE *bfile = NULL;
|
|
struct ast_format *f;
|
|
struct ast_filestream *fs = NULL;
|
|
char *buf = NULL;
|
|
size_t size = 0;
|
|
int format_found = 0;
|
|
|
|
AST_RWLIST_RDLOCK(&formats);
|
|
|
|
/* set the O_TRUNC flag if and only if there is no O_APPEND specified */
|
|
/* We really can't use O_APPEND as it will break WAV header updates */
|
|
if (flags & O_APPEND) {
|
|
flags &= ~O_APPEND;
|
|
} else {
|
|
myflags = O_TRUNC;
|
|
}
|
|
|
|
myflags |= O_WRONLY | O_CREAT;
|
|
|
|
/* XXX need to fix this - we should just do the fopen,
|
|
* not open followed by fdopen()
|
|
*/
|
|
AST_RWLIST_TRAVERSE(&formats, f, list) {
|
|
char *fn, *orig_fn = NULL;
|
|
if (fs)
|
|
break;
|
|
|
|
if (!exts_compare(f->exts, type))
|
|
continue;
|
|
else
|
|
format_found = 1;
|
|
|
|
fn = build_filename(filename, type);
|
|
fd = open(fn, flags | myflags, mode);
|
|
if (fd > -1) {
|
|
/* fdopen() the resulting file stream */
|
|
bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
|
|
if (!bfile) {
|
|
ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
|
|
close(fd);
|
|
fd = -1;
|
|
}
|
|
}
|
|
|
|
if (ast_opt_cache_record_files && (fd > -1)) {
|
|
char *c;
|
|
|
|
fclose(bfile); /* this also closes fd */
|
|
/*
|
|
We touch orig_fn just as a place-holder so other things (like vmail) see the file is there.
|
|
What we are really doing is writing to record_cache_dir until we are done then we will mv the file into place.
|
|
*/
|
|
orig_fn = ast_strdupa(fn);
|
|
for (c = fn; *c; c++)
|
|
if (*c == '/')
|
|
*c = '_';
|
|
|
|
size = strlen(fn) + strlen(record_cache_dir) + 2;
|
|
buf = alloca(size);
|
|
strcpy(buf, record_cache_dir);
|
|
strcat(buf, "/");
|
|
strcat(buf, fn);
|
|
ast_free(fn);
|
|
fn = buf;
|
|
fd = open(fn, flags | myflags, mode);
|
|
if (fd > -1) {
|
|
/* fdopen() the resulting file stream */
|
|
bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
|
|
if (!bfile) {
|
|
ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
|
|
close(fd);
|
|
fd = -1;
|
|
}
|
|
}
|
|
}
|
|
if (fd > -1) {
|
|
errno = 0;
|
|
fs = get_filestream(f, bfile);
|
|
if (!fs || rewrite_wrapper(fs, comment)) {
|
|
ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
|
|
close(fd);
|
|
if (orig_fn) {
|
|
unlink(fn);
|
|
unlink(orig_fn);
|
|
}
|
|
if (fs)
|
|
ast_free(fs);
|
|
fs = NULL;
|
|
continue;
|
|
}
|
|
fs->trans = NULL;
|
|
fs->fmt = f;
|
|
fs->flags = flags;
|
|
fs->mode = mode;
|
|
if (orig_fn) {
|
|
fs->realfilename = ast_strdup(orig_fn);
|
|
fs->filename = ast_strdup(fn);
|
|
} else {
|
|
fs->realfilename = NULL;
|
|
fs->filename = ast_strdup(filename);
|
|
}
|
|
fs->vfs = NULL;
|
|
/* If truncated, we'll be at the beginning; if not truncated, then append */
|
|
f->seek(fs, 0, SEEK_END);
|
|
} else if (errno != EEXIST) {
|
|
ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
|
|
if (orig_fn)
|
|
unlink(orig_fn);
|
|
}
|
|
/* if buf != NULL then fn is already free and pointing to it */
|
|
if (!buf)
|
|
ast_free(fn);
|
|
}
|
|
|
|
AST_RWLIST_UNLOCK(&formats);
|
|
|
|
if (!format_found)
|
|
ast_log(LOG_WARNING, "No such format '%s'\n", type);
|
|
|
|
return fs;
|
|
}
|
|
|
|
/*!
|
|
* \brief the core of all waitstream() functions
|
|
*/
|
|
static int waitstream_core(struct ast_channel *c, const char *breakon,
|
|
const char *forward, const char *rewind, int skip_ms,
|
|
int audiofd, int cmdfd, const char *context)
|
|
{
|
|
const char *orig_chan_name = NULL;
|
|
int err = 0;
|
|
|
|
if (!breakon)
|
|
breakon = "";
|
|
if (!forward)
|
|
forward = "";
|
|
if (!rewind)
|
|
rewind = "";
|
|
|
|
/* Switch the channel to end DTMF frame only. waitstream_core doesn't care about the start of DTMF. */
|
|
ast_set_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
|
|
if (ast_test_flag(c, AST_FLAG_MASQ_NOSTREAM))
|
|
orig_chan_name = ast_strdupa(c->name);
|
|
|
|
while (c->stream) {
|
|
int res;
|
|
int ms;
|
|
|
|
if (orig_chan_name && strcasecmp(orig_chan_name, c->name)) {
|
|
ast_stopstream(c);
|
|
err = 1;
|
|
break;
|
|
}
|
|
|
|
ms = ast_sched_wait(c->sched);
|
|
|
|
if (ms < 0 && !c->timingfunc) {
|
|
ast_stopstream(c);
|
|
break;
|
|
}
|
|
if (ms < 0)
|
|
ms = 1000;
|
|
if (cmdfd < 0) {
|
|
res = ast_waitfor(c, ms);
|
|
if (res < 0) {
|
|
ast_log(LOG_WARNING, "Select failed (%s)\n", strerror(errno));
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
return res;
|
|
}
|
|
} else {
|
|
int outfd;
|
|
struct ast_channel *rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
|
|
if (!rchan && (outfd < 0) && (ms)) {
|
|
/* Continue */
|
|
if (errno == EINTR)
|
|
continue;
|
|
ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
return -1;
|
|
} else if (outfd > -1) { /* this requires cmdfd set */
|
|
/* The FD we were watching has something waiting */
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
return 1;
|
|
}
|
|
/* if rchan is set, it is 'c' */
|
|
res = rchan ? 1 : 0; /* map into 'res' values */
|
|
}
|
|
if (res > 0) {
|
|
struct ast_frame *fr = ast_read(c);
|
|
if (!fr) {
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
return -1;
|
|
}
|
|
switch (fr->frametype) {
|
|
case AST_FRAME_DTMF_END:
|
|
if (context) {
|
|
const char exten[2] = { fr->subclass, '\0' };
|
|
if (ast_exists_extension(c, context, exten, 1, c->cid.cid_num)) {
|
|
res = fr->subclass;
|
|
ast_frfree(fr);
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
return res;
|
|
}
|
|
} else {
|
|
res = fr->subclass;
|
|
if (strchr(forward, res)) {
|
|
ast_stream_fastforward(c->stream, skip_ms);
|
|
} else if (strchr(rewind, res)) {
|
|
ast_stream_rewind(c->stream, skip_ms);
|
|
} else if (strchr(breakon, res)) {
|
|
ast_frfree(fr);
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
return res;
|
|
}
|
|
}
|
|
break;
|
|
case AST_FRAME_CONTROL:
|
|
switch (fr->subclass) {
|
|
case AST_CONTROL_HANGUP:
|
|
case AST_CONTROL_BUSY:
|
|
case AST_CONTROL_CONGESTION:
|
|
ast_frfree(fr);
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
return -1;
|
|
case AST_CONTROL_RINGING:
|
|
case AST_CONTROL_ANSWER:
|
|
case AST_CONTROL_VIDUPDATE:
|
|
case AST_CONTROL_SRCUPDATE:
|
|
case AST_CONTROL_HOLD:
|
|
case AST_CONTROL_UNHOLD:
|
|
/* Unimportant */
|
|
break;
|
|
default:
|
|
ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", fr->subclass);
|
|
}
|
|
break;
|
|
case AST_FRAME_VOICE:
|
|
/* Write audio if appropriate */
|
|
if (audiofd > -1)
|
|
write(audiofd, fr->data, fr->datalen);
|
|
default:
|
|
/* Ignore all others */
|
|
break;
|
|
}
|
|
ast_frfree(fr);
|
|
}
|
|
ast_sched_runq(c->sched);
|
|
}
|
|
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
|
|
return (err || c->_softhangup) ? -1 : 0;
|
|
}
|
|
|
|
int ast_waitstream_fr(struct ast_channel *c, const char *breakon, const char *forward, const char *rewind, int ms)
|
|
{
|
|
return waitstream_core(c, breakon, forward, rewind, ms,
|
|
-1 /* no audiofd */, -1 /* no cmdfd */, NULL /* no context */);
|
|
}
|
|
|
|
int ast_waitstream(struct ast_channel *c, const char *breakon)
|
|
{
|
|
return waitstream_core(c, breakon, NULL, NULL, 0, -1, -1, NULL);
|
|
}
|
|
|
|
int ast_waitstream_full(struct ast_channel *c, const char *breakon, int audiofd, int cmdfd)
|
|
{
|
|
return waitstream_core(c, breakon, NULL, NULL, 0,
|
|
audiofd, cmdfd, NULL /* no context */);
|
|
}
|
|
|
|
int ast_waitstream_exten(struct ast_channel *c, const char *context)
|
|
{
|
|
/* Waitstream, with return in the case of a valid 1 digit extension */
|
|
/* in the current or specified context being pressed */
|
|
|
|
if (!context)
|
|
context = c->context;
|
|
return waitstream_core(c, NULL, NULL, NULL, 0,
|
|
-1, -1, context);
|
|
}
|
|
|
|
/*
|
|
* if the file name is non-empty, try to play it.
|
|
* Return 0 if success, -1 if error, digit if interrupted by a digit.
|
|
* If digits == "" then we can simply check for non-zero.
|
|
*/
|
|
int ast_stream_and_wait(struct ast_channel *chan, const char *file, const char *digits)
|
|
{
|
|
int res = 0;
|
|
if (!ast_strlen_zero(file)) {
|
|
res = ast_streamfile(chan, file, chan->language);
|
|
if (!res) {
|
|
res = ast_waitstream(chan, digits);
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static char *handle_cli_core_show_file_formats(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
|
{
|
|
#define FORMAT "%-10s %-10s %-20s\n"
|
|
#define FORMAT2 "%-10s %-10s %-20s\n"
|
|
struct ast_format *f;
|
|
int count_fmt = 0;
|
|
|
|
switch (cmd) {
|
|
case CLI_INIT:
|
|
e->command = "core show file formats";
|
|
e->usage =
|
|
"Usage: core show file formats\n"
|
|
" Displays currently registered file formats (if any).\n";
|
|
return NULL;
|
|
case CLI_GENERATE:
|
|
return NULL;
|
|
}
|
|
|
|
if (a->argc != 4)
|
|
return CLI_SHOWUSAGE;
|
|
|
|
ast_cli(a->fd, FORMAT, "Format", "Name", "Extensions");
|
|
ast_cli(a->fd, FORMAT, "------", "----", "----------");
|
|
|
|
AST_RWLIST_RDLOCK(&formats);
|
|
AST_RWLIST_TRAVERSE(&formats, f, list) {
|
|
ast_cli(a->fd, FORMAT2, ast_getformatname(f->format), f->name, f->exts);
|
|
count_fmt++;
|
|
}
|
|
AST_RWLIST_UNLOCK(&formats);
|
|
ast_cli(a->fd, "%d file formats registered.\n", count_fmt);
|
|
return CLI_SUCCESS;
|
|
#undef FORMAT
|
|
#undef FORMAT2
|
|
}
|
|
|
|
struct ast_cli_entry cli_file[] = {
|
|
AST_CLI_DEFINE(handle_cli_core_show_file_formats, "Displays file formats")
|
|
};
|
|
|
|
int ast_file_init(void)
|
|
{
|
|
ast_cli_register_multiple(cli_file, sizeof(cli_file) / sizeof(struct ast_cli_entry));
|
|
return 0;
|
|
}
|