diff options
Diffstat (limited to '1.2-netsec/apps/app_record.c')
-rw-r--r-- | 1.2-netsec/apps/app_record.c | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/1.2-netsec/apps/app_record.c b/1.2-netsec/apps/app_record.c new file mode 100644 index 000000000..85310ea70 --- /dev/null +++ b/1.2-netsec/apps/app_record.c @@ -0,0 +1,377 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 1999 - 2005, Digium, Inc. + * + * Matthew Fredrickson <creslin@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 Trivial application to record a sound file + * + * \ingroup applications + */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include "asterisk/lock.h" +#include "asterisk/file.h" +#include "asterisk/logger.h" +#include "asterisk/channel.h" +#include "asterisk/pbx.h" +#include "asterisk/module.h" +#include "asterisk/translate.h" +#include "asterisk/dsp.h" +#include "asterisk/utils.h" +#include "asterisk/options.h" + +static char *tdesc = "Trivial Record Application"; + +static char *app = "Record"; + +static char *synopsis = "Record to a file"; + +static char *descrip = +" Record(filename.format|silence[|maxduration][|options])\n\n" +"Records from the channel into a given filename. If the file exists it will\n" +"be overwritten.\n" +"- 'format' is the format of the file type to be recorded (wav, gsm, etc).\n" +"- 'silence' is the number of seconds of silence to allow before returning.\n" +"- 'maxduration' is the maximum recording duration in seconds. If missing\n" +"or 0 there is no maximum.\n" +"- 'options' may contain any of the following letters:\n" +" 'a' : append to existing recording rather than replacing\n" +" 'n' : do not answer, but record anyway if line not yet answered\n" +" 'q' : quiet (do not play a beep tone)\n" +" 's' : skip recording if the line is not yet answered\n" +" 't' : use alternate '*' terminator key instead of default '#'\n" +"\n" +"If filename contains '%d', these characters will be replaced with a number\n" +"incremented by one each time the file is recorded. \n\n" +"Use 'show file formats' to see the available formats on your system\n\n" +"User can press '#' to terminate the recording and continue to the next priority.\n\n" +"If the user should hangup during a recording, all data will be lost and the\n" +"application will teminate. \n"; + +STANDARD_LOCAL_USER; + +LOCAL_USER_DECL; + +static int record_exec(struct ast_channel *chan, void *data) +{ + int res = 0; + int count = 0; + int percentflag = 0; + char *filename, *ext = NULL, *silstr, *maxstr, *options; + char *vdata, *p; + int i = 0; + char tmp[256]; + + struct ast_filestream *s = '\0'; + struct localuser *u; + struct ast_frame *f = NULL; + + struct ast_dsp *sildet = NULL; /* silence detector dsp */ + int totalsilence = 0; + int dspsilence = 0; + int silence = 0; /* amount of silence to allow */ + int gotsilence = 0; /* did we timeout for silence? */ + int maxduration = 0; /* max duration of recording in milliseconds */ + int gottimeout = 0; /* did we timeout for maxduration exceeded? */ + int option_skip = 0; + int option_noanswer = 0; + int option_append = 0; + int terminator = '#'; + int option_quiet = 0; + int rfmt = 0; + int flags; + int waitres; + struct ast_silence_generator *silgen = NULL; + + /* The next few lines of code parse out the filename and header from the input string */ + if (ast_strlen_zero(data)) { /* no data implies no filename or anything is present */ + ast_log(LOG_WARNING, "Record requires an argument (filename)\n"); + return -1; + } + + LOCAL_USER_ADD(u); + + /* Yay for strsep being easy */ + vdata = ast_strdupa(data); + if (!vdata) { + ast_log(LOG_ERROR, "Out of memory\n"); + LOCAL_USER_REMOVE(u); + return -1; + } + + p = vdata; + filename = strsep(&p, "|"); + silstr = strsep(&p, "|"); + maxstr = strsep(&p, "|"); + options = strsep(&p, "|"); + + if (filename) { + if (strstr(filename, "%d")) + percentflag = 1; + ext = strrchr(filename, '.'); /* to support filename with a . in the filename, not format */ + if (!ext) + ext = strchr(filename, ':'); + if (ext) { + *ext = '\0'; + ext++; + } + } + if (!ext) { + ast_log(LOG_WARNING, "No extension specified to filename!\n"); + LOCAL_USER_REMOVE(u); + return -1; + } + if (silstr) { + if ((sscanf(silstr, "%d", &i) == 1) && (i > -1)) { + silence = i * 1000; + } else if (!ast_strlen_zero(silstr)) { + ast_log(LOG_WARNING, "'%s' is not a valid silence duration\n", silstr); + } + } + + if (maxstr) { + if ((sscanf(maxstr, "%d", &i) == 1) && (i > -1)) + /* Convert duration to milliseconds */ + maxduration = i * 1000; + else if (!ast_strlen_zero(maxstr)) + ast_log(LOG_WARNING, "'%s' is not a valid maximum duration\n", maxstr); + } + if (options) { + /* Retain backwards compatibility with old style options */ + if (!strcasecmp(options, "skip")) + option_skip = 1; + else if (!strcasecmp(options, "noanswer")) + option_noanswer = 1; + else { + if (strchr(options, 's')) + option_skip = 1; + if (strchr(options, 'n')) + option_noanswer = 1; + if (strchr(options, 'a')) + option_append = 1; + if (strchr(options, 't')) + terminator = '*'; + if (strchr(options, 'q')) + option_quiet = 1; + } + } + + /* done parsing */ + + /* these are to allow the use of the %d in the config file for a wild card of sort to + create a new file with the inputed name scheme */ + if (percentflag) { + do { + snprintf(tmp, sizeof(tmp), filename, count); + count++; + } while ( ast_fileexists(tmp, ext, chan->language) != -1 ); + pbx_builtin_setvar_helper(chan, "RECORDED_FILE", tmp); + } else + strncpy(tmp, filename, sizeof(tmp)-1); + /* end of routine mentioned */ + + + + if (chan->_state != AST_STATE_UP) { + if (option_skip) { + /* At the user's option, skip if the line is not up */ + LOCAL_USER_REMOVE(u); + return 0; + } else if (!option_noanswer) { + /* Otherwise answer unless we're supposed to record while on-hook */ + res = ast_answer(chan); + } + } + + if (res) { + ast_log(LOG_WARNING, "Could not answer channel '%s'\n", chan->name); + goto out; + } + + if (!option_quiet) { + /* Some code to play a nice little beep to signify the start of the record operation */ + res = ast_streamfile(chan, "beep", chan->language); + if (!res) { + res = ast_waitstream(chan, ""); + } else { + ast_log(LOG_WARNING, "ast_streamfile failed on %s\n", chan->name); + } + ast_stopstream(chan); + } + + /* The end of beep code. Now the recording starts */ + + if (silence > 0) { + rfmt = chan->readformat; + res = ast_set_read_format(chan, AST_FORMAT_SLINEAR); + if (res < 0) { + ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n"); + LOCAL_USER_REMOVE(u); + return -1; + } + sildet = ast_dsp_new(); + if (!sildet) { + ast_log(LOG_WARNING, "Unable to create silence detector :(\n"); + LOCAL_USER_REMOVE(u); + return -1; + } + ast_dsp_set_threshold(sildet, 256); + } + + + flags = option_append ? O_CREAT|O_APPEND|O_WRONLY : O_CREAT|O_TRUNC|O_WRONLY; + s = ast_writefile( tmp, ext, NULL, flags , 0, 0644); + + if (!s) { + ast_log(LOG_WARNING, "Could not create file %s\n", filename); + goto out; + } + + if (option_transmit_silence_during_record) + silgen = ast_channel_start_silence_generator(chan); + + /* Request a video update */ + ast_indicate(chan, AST_CONTROL_VIDUPDATE); + + if (maxduration <= 0) + maxduration = -1; + + while ((waitres = ast_waitfor(chan, maxduration)) > -1) { + if (maxduration > 0) { + if (waitres == 0) { + gottimeout = 1; + break; + } + maxduration = waitres; + } + + f = ast_read(chan); + if (!f) { + res = -1; + break; + } + if (f->frametype == AST_FRAME_VOICE) { + res = ast_writestream(s, f); + + if (res) { + ast_log(LOG_WARNING, "Problem writing frame\n"); + ast_frfree(f); + break; + } + + if (silence > 0) { + dspsilence = 0; + ast_dsp_silence(sildet, f, &dspsilence); + if (dspsilence) { + totalsilence = dspsilence; + } else { + totalsilence = 0; + } + if (totalsilence > silence) { + /* Ended happily with silence */ + ast_frfree(f); + gotsilence = 1; + break; + } + } + } else if (f->frametype == AST_FRAME_VIDEO) { + res = ast_writestream(s, f); + + if (res) { + ast_log(LOG_WARNING, "Problem writing frame\n"); + ast_frfree(f); + break; + } + } else if ((f->frametype == AST_FRAME_DTMF) && + (f->subclass == terminator)) { + ast_frfree(f); + break; + } + ast_frfree(f); + } + if (!f) { + ast_log(LOG_DEBUG, "Got hangup\n"); + res = -1; + } + + if (gotsilence) { + ast_stream_rewind(s, silence-1000); + ast_truncstream(s); + } else if (!gottimeout) { + /* Strip off the last 1/4 second of it */ + ast_stream_rewind(s, 250); + ast_truncstream(s); + } + ast_closestream(s); + + if (silgen) + ast_channel_stop_silence_generator(chan, silgen); + + out: + if ((silence > 0) && rfmt) { + res = ast_set_read_format(chan, rfmt); + if (res) + ast_log(LOG_WARNING, "Unable to restore read format on '%s'\n", chan->name); + if (sildet) + ast_dsp_free(sildet); + } + + LOCAL_USER_REMOVE(u); + + return res; +} + +int unload_module(void) +{ + int res; + + res = ast_unregister_application(app); + + STANDARD_HANGUP_LOCALUSERS; + + return res; +} + +int load_module(void) +{ + return ast_register_application(app, record_exec, synopsis, descrip); +} + +char *description(void) +{ + return tdesc; +} + +int usecount(void) +{ + int res; + STANDARD_USECOUNT(res); + return res; +} + +char *key() +{ + return ASTERISK_GPL_KEY; +} |