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asterisk/apps/app_dictate.c
Terry Wilson 99cae5b750 Opaquify channel stringfields 
Continue channel opaque-ification by wrapping all of the stringfields.
Eventually, we will restrict what can actually set these variables, but
the purpose for now is to hide the implementation and keep people from
adding code that directly accesses the channel structure. Semantic
changes will follow afterward.

Review: https://reviewboard.asterisk.org/r/1661/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@352348 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2012-01-24 20:12:09 +00:00

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2005, Anthony Minessale II
*
* Anthony Minessale II <anthmct@yahoo.com>
*
* Donated by Sangoma Technologies <http://www.samgoma.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 Virtual Dictation Machine Application For Asterisk
*
* \author Anthony Minessale II <anthmct@yahoo.com>
*
* \ingroup applications
*/
/*** MODULEINFO
<support_level>extended</support_level>
***/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include <sys/stat.h>
#include "asterisk/paths.h" /* use ast_config_AST_SPOOL_DIR */
#include "asterisk/file.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/say.h"
#include "asterisk/app.h"
/*** DOCUMENTATION
<application name="Dictate" language="en_US">
<synopsis>
Virtual Dictation Machine.
</synopsis>
<syntax>
<parameter name="base_dir" />
<parameter name="filename" />
</syntax>
<description>
<para>Start dictation machine using optional <replaceable>base_dir</replaceable> for files.</para>
</description>
</application>
***/
static const char app[] = "Dictate";
typedef enum {
DFLAG_RECORD = (1 << 0),
DFLAG_PLAY = (1 << 1),
DFLAG_TRUNC = (1 << 2),
DFLAG_PAUSE = (1 << 3),
} dflags;
typedef enum {
DMODE_INIT,
DMODE_RECORD,
DMODE_PLAY
} dmodes;
#define ast_toggle_flag(it,flag) if(ast_test_flag(it, flag)) ast_clear_flag(it, flag); else ast_set_flag(it, flag)
static int play_and_wait(struct ast_channel *chan, char *file, char *digits)
{
int res = -1;
if (!ast_streamfile(chan, file, ast_channel_language(chan))) {
res = ast_waitstream(chan, digits);
}
return res;
}
static int dictate_exec(struct ast_channel *chan, const char *data)
{
char *path = NULL, filein[256], *filename = "";
char *parse;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(base);
AST_APP_ARG(filename);
);
char dftbase[256];
char *base;
struct ast_flags flags = {0};
struct ast_filestream *fs;
struct ast_frame *f = NULL;
int ffactor = 320 * 80,
res = 0,
done = 0,
lastop = 0,
samples = 0,
speed = 1,
digit = 0,
len = 0,
maxlen = 0,
mode = 0;
struct ast_format oldr;
ast_format_clear(&oldr);
snprintf(dftbase, sizeof(dftbase), "%s/dictate", ast_config_AST_SPOOL_DIR);
if (!ast_strlen_zero(data)) {
parse = ast_strdupa(data);
AST_STANDARD_APP_ARGS(args, parse);
} else
args.argc = 0;
if (args.argc && !ast_strlen_zero(args.base)) {
base = args.base;
} else {
base = dftbase;
}
if (args.argc > 1 && args.filename) {
filename = args.filename;
}
ast_format_copy(&oldr, &chan->readformat);
if ((res = ast_set_read_format_by_id(chan, AST_FORMAT_SLINEAR)) < 0) {
ast_log(LOG_WARNING, "Unable to set to linear mode.\n");
return -1;
}
if (chan->_state != AST_STATE_UP) {
ast_answer(chan);
}
ast_safe_sleep(chan, 200);
for (res = 0; !res;) {
if (ast_strlen_zero(filename)) {
if (ast_app_getdata(chan, "dictate/enter_filename", filein, sizeof(filein), 0) ||
ast_strlen_zero(filein)) {
res = -1;
break;
}
} else {
ast_copy_string(filein, filename, sizeof(filein));
filename = "";
}
ast_mkdir(base, 0755);
len = strlen(base) + strlen(filein) + 2;
if (!path || len > maxlen) {
path = alloca(len);
memset(path, 0, len);
maxlen = len;
} else {
memset(path, 0, maxlen);
}
snprintf(path, len, "%s/%s", base, filein);
fs = ast_writefile(path, "raw", NULL, O_CREAT|O_APPEND, 0, AST_FILE_MODE);
mode = DMODE_PLAY;
memset(&flags, 0, sizeof(flags));
ast_set_flag(&flags, DFLAG_PAUSE);
digit = play_and_wait(chan, "dictate/forhelp", AST_DIGIT_ANY);
done = 0;
speed = 1;
res = 0;
lastop = 0;
samples = 0;
while (!done && ((res = ast_waitfor(chan, -1)) > -1) && fs && (f = ast_read(chan))) {
if (digit) {
struct ast_frame fr = {AST_FRAME_DTMF, { .integer = digit } };
ast_queue_frame(chan, &fr);
digit = 0;
}
if ((f->frametype == AST_FRAME_DTMF)) {
int got = 1;
switch(mode) {
case DMODE_PLAY:
switch (f->subclass.integer) {
case '1':
ast_set_flag(&flags, DFLAG_PAUSE);
mode = DMODE_RECORD;
break;
case '2':
speed++;
if (speed > 4) {
speed = 1;
}
res = ast_say_number(chan, speed, AST_DIGIT_ANY, ast_channel_language(chan), NULL);
break;
case '7':
samples -= ffactor;
if(samples < 0) {
samples = 0;
}
ast_seekstream(fs, samples, SEEK_SET);
break;
case '8':
samples += ffactor;
ast_seekstream(fs, samples, SEEK_SET);
break;
default:
got = 0;
}
break;
case DMODE_RECORD:
switch (f->subclass.integer) {
case '1':
ast_set_flag(&flags, DFLAG_PAUSE);
mode = DMODE_PLAY;
break;
case '8':
ast_toggle_flag(&flags, DFLAG_TRUNC);
lastop = 0;
break;
default:
got = 0;
}
break;
default:
got = 0;
}
if (!got) {
switch (f->subclass.integer) {
case '#':
done = 1;
continue;
break;
case '*':
ast_toggle_flag(&flags, DFLAG_PAUSE);
if (ast_test_flag(&flags, DFLAG_PAUSE)) {
digit = play_and_wait(chan, "dictate/pause", AST_DIGIT_ANY);
} else {
digit = play_and_wait(chan, mode == DMODE_PLAY ? "dictate/playback" : "dictate/record", AST_DIGIT_ANY);
}
break;
case '0':
ast_set_flag(&flags, DFLAG_PAUSE);
digit = play_and_wait(chan, "dictate/paused", AST_DIGIT_ANY);
switch(mode) {
case DMODE_PLAY:
digit = play_and_wait(chan, "dictate/play_help", AST_DIGIT_ANY);
break;
case DMODE_RECORD:
digit = play_and_wait(chan, "dictate/record_help", AST_DIGIT_ANY);
break;
}
if (digit == 0) {
digit = play_and_wait(chan, "dictate/both_help", AST_DIGIT_ANY);
} else if (digit < 0) {
done = 1;
break;
}
break;
}
}
} else if (f->frametype == AST_FRAME_VOICE) {
switch(mode) {
struct ast_frame *fr;
int x;
case DMODE_PLAY:
if (lastop != DMODE_PLAY) {
if (ast_test_flag(&flags, DFLAG_PAUSE)) {
digit = play_and_wait(chan, "dictate/playback_mode", AST_DIGIT_ANY);
if (digit == 0) {
digit = play_and_wait(chan, "dictate/paused", AST_DIGIT_ANY);
} else if (digit < 0) {
break;
}
}
if (lastop != DFLAG_PLAY) {
lastop = DFLAG_PLAY;
ast_closestream(fs);
if (!(fs = ast_openstream(chan, path, ast_channel_language(chan))))
break;
ast_seekstream(fs, samples, SEEK_SET);
chan->stream = NULL;
}
lastop = DMODE_PLAY;
}
if (!ast_test_flag(&flags, DFLAG_PAUSE)) {
for (x = 0; x < speed; x++) {
if ((fr = ast_readframe(fs))) {
ast_write(chan, fr);
samples += fr->samples;
ast_frfree(fr);
fr = NULL;
} else {
samples = 0;
ast_seekstream(fs, 0, SEEK_SET);
}
}
}
break;
case DMODE_RECORD:
if (lastop != DMODE_RECORD) {
int oflags = O_CREAT | O_WRONLY;
if (ast_test_flag(&flags, DFLAG_PAUSE)) {
digit = play_and_wait(chan, "dictate/record_mode", AST_DIGIT_ANY);
if (digit == 0) {
digit = play_and_wait(chan, "dictate/paused", AST_DIGIT_ANY);
} else if (digit < 0) {
break;
}
}
lastop = DMODE_RECORD;
ast_closestream(fs);
if ( ast_test_flag(&flags, DFLAG_TRUNC)) {
oflags |= O_TRUNC;
digit = play_and_wait(chan, "dictate/truncating_audio", AST_DIGIT_ANY);
} else {
oflags |= O_APPEND;
}
fs = ast_writefile(path, "raw", NULL, oflags, 0, AST_FILE_MODE);
if (ast_test_flag(&flags, DFLAG_TRUNC)) {
ast_seekstream(fs, 0, SEEK_SET);
ast_clear_flag(&flags, DFLAG_TRUNC);
} else {
ast_seekstream(fs, 0, SEEK_END);
}
}
if (!ast_test_flag(&flags, DFLAG_PAUSE)) {
res = ast_writestream(fs, f);
}
break;
}
}
ast_frfree(f);
}
}
if (oldr.id) {
ast_set_read_format(chan, &oldr);
}
return 0;
}
static int unload_module(void)
{
int res;
res = ast_unregister_application(app);
return res;
}
static int load_module(void)
{
return ast_register_application_xml(app, dictate_exec);
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Virtual Dictation Machine");
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