e6b2e9a750
This patch adds 'const' tags to a number of Asterisk APIs where they are appropriate (where the API already demanded that the function argument not be modified, but the compiler was not informed of that fact). The list includes: - CLI command handlers - CLI command handler arguments - AGI command handlers - AGI command handler arguments - Dialplan application handler arguments - Speech engine API function arguments In addition, various file-scope and function-scope constant arrays got 'const' and/or 'static' qualifiers where they were missing. Review: https://reviewboard.asterisk.org/r/251/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@196072 65c4cc65-6c06-0410-ace0-fbb531ad65f3
352 lines
8.4 KiB
C
352 lines
8.4 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2005, Anthony Minessale II
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*
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* Anthony Minessale II <anthmct@yahoo.com>
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*
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* Donated by Sangoma Technologies <http://www.samgoma.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 Virtual Dictation Machine Application For Asterisk
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*
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* \author Anthony Minessale II <anthmct@yahoo.com>
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*
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* \ingroup applications
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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 <sys/stat.h>
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#include "asterisk/paths.h" /* use ast_config_AST_SPOOL_DIR */
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#include "asterisk/file.h"
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#include "asterisk/pbx.h"
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#include "asterisk/module.h"
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#include "asterisk/say.h"
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#include "asterisk/app.h"
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/*** DOCUMENTATION
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<application name="Dictate" language="en_US">
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<synopsis>
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Virtual Dictation Machine.
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</synopsis>
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<syntax>
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<parameter name="base_dir" />
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<parameter name="filename" />
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</syntax>
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<description>
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<para>Start dictation machine using optional <replaceable>base_dir</replaceable> for files.</para>
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</description>
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</application>
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***/
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static char *app = "Dictate";
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typedef enum {
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DFLAG_RECORD = (1 << 0),
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DFLAG_PLAY = (1 << 1),
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DFLAG_TRUNC = (1 << 2),
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DFLAG_PAUSE = (1 << 3),
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} dflags;
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typedef enum {
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DMODE_INIT,
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DMODE_RECORD,
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DMODE_PLAY
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} dmodes;
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#define ast_toggle_flag(it,flag) if(ast_test_flag(it, flag)) ast_clear_flag(it, flag); else ast_set_flag(it, flag)
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static int play_and_wait(struct ast_channel *chan, char *file, char *digits)
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{
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int res = -1;
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if (!ast_streamfile(chan, file, chan->language)) {
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res = ast_waitstream(chan, digits);
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}
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return res;
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}
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static int dictate_exec(struct ast_channel *chan, const char *data)
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{
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char *path = NULL, filein[256], *filename = "";
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char *parse;
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(base);
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AST_APP_ARG(filename);
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);
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char dftbase[256];
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char *base;
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struct ast_flags flags = {0};
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struct ast_filestream *fs;
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struct ast_frame *f = NULL;
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int ffactor = 320 * 80,
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res = 0,
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done = 0,
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oldr = 0,
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lastop = 0,
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samples = 0,
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speed = 1,
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digit = 0,
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len = 0,
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maxlen = 0,
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mode = 0;
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snprintf(dftbase, sizeof(dftbase), "%s/dictate", ast_config_AST_SPOOL_DIR);
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if (!ast_strlen_zero(data)) {
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parse = ast_strdupa(data);
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AST_STANDARD_APP_ARGS(args, parse);
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} else
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args.argc = 0;
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if (args.argc && !ast_strlen_zero(args.base)) {
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base = args.base;
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} else {
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base = dftbase;
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}
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if (args.argc > 1 && args.filename) {
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filename = args.filename;
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}
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oldr = chan->readformat;
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if ((res = ast_set_read_format(chan, AST_FORMAT_SLINEAR)) < 0) {
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ast_log(LOG_WARNING, "Unable to set to linear mode.\n");
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return -1;
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}
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if (chan->_state != AST_STATE_UP) {
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ast_answer(chan);
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}
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ast_safe_sleep(chan, 200);
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for (res = 0; !res;) {
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if (ast_strlen_zero(filename)) {
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if (ast_app_getdata(chan, "dictate/enter_filename", filein, sizeof(filein), 0) ||
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ast_strlen_zero(filein)) {
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res = -1;
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break;
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}
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} else {
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ast_copy_string(filein, filename, sizeof(filein));
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filename = "";
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}
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ast_mkdir(base, 0755);
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len = strlen(base) + strlen(filein) + 2;
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if (!path || len > maxlen) {
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path = alloca(len);
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memset(path, 0, len);
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maxlen = len;
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} else {
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memset(path, 0, maxlen);
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}
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snprintf(path, len, "%s/%s", base, filein);
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fs = ast_writefile(path, "raw", NULL, O_CREAT|O_APPEND, 0, AST_FILE_MODE);
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mode = DMODE_PLAY;
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memset(&flags, 0, sizeof(flags));
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ast_set_flag(&flags, DFLAG_PAUSE);
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digit = play_and_wait(chan, "dictate/forhelp", AST_DIGIT_ANY);
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done = 0;
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speed = 1;
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res = 0;
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lastop = 0;
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samples = 0;
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while (!done && ((res = ast_waitfor(chan, -1)) > -1) && fs && (f = ast_read(chan))) {
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if (digit) {
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struct ast_frame fr = {AST_FRAME_DTMF, digit};
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ast_queue_frame(chan, &fr);
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digit = 0;
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}
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if ((f->frametype == AST_FRAME_DTMF)) {
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int got = 1;
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switch(mode) {
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case DMODE_PLAY:
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switch(f->subclass) {
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case '1':
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ast_set_flag(&flags, DFLAG_PAUSE);
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mode = DMODE_RECORD;
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break;
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case '2':
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speed++;
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if (speed > 4) {
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speed = 1;
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}
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res = ast_say_number(chan, speed, AST_DIGIT_ANY, chan->language, NULL);
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break;
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case '7':
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samples -= ffactor;
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if(samples < 0) {
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samples = 0;
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}
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ast_seekstream(fs, samples, SEEK_SET);
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break;
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case '8':
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samples += ffactor;
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ast_seekstream(fs, samples, SEEK_SET);
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break;
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default:
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got = 0;
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}
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break;
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case DMODE_RECORD:
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switch(f->subclass) {
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case '1':
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ast_set_flag(&flags, DFLAG_PAUSE);
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mode = DMODE_PLAY;
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break;
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case '8':
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ast_toggle_flag(&flags, DFLAG_TRUNC);
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lastop = 0;
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break;
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default:
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got = 0;
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}
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break;
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default:
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got = 0;
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}
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if (!got) {
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switch(f->subclass) {
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case '#':
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done = 1;
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continue;
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break;
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case '*':
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ast_toggle_flag(&flags, DFLAG_PAUSE);
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if (ast_test_flag(&flags, DFLAG_PAUSE)) {
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digit = play_and_wait(chan, "dictate/pause", AST_DIGIT_ANY);
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} else {
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digit = play_and_wait(chan, mode == DMODE_PLAY ? "dictate/playback" : "dictate/record", AST_DIGIT_ANY);
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}
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break;
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case '0':
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ast_set_flag(&flags, DFLAG_PAUSE);
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digit = play_and_wait(chan, "dictate/paused", AST_DIGIT_ANY);
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switch(mode) {
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case DMODE_PLAY:
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digit = play_and_wait(chan, "dictate/play_help", AST_DIGIT_ANY);
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break;
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case DMODE_RECORD:
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digit = play_and_wait(chan, "dictate/record_help", AST_DIGIT_ANY);
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break;
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}
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if (digit == 0) {
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digit = play_and_wait(chan, "dictate/both_help", AST_DIGIT_ANY);
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} else if (digit < 0) {
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done = 1;
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break;
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}
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break;
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}
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}
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} else if (f->frametype == AST_FRAME_VOICE) {
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switch(mode) {
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struct ast_frame *fr;
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int x;
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case DMODE_PLAY:
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if (lastop != DMODE_PLAY) {
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if (ast_test_flag(&flags, DFLAG_PAUSE)) {
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digit = play_and_wait(chan, "dictate/playback_mode", AST_DIGIT_ANY);
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if (digit == 0) {
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digit = play_and_wait(chan, "dictate/paused", AST_DIGIT_ANY);
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} else if (digit < 0) {
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break;
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}
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}
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if (lastop != DFLAG_PLAY) {
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lastop = DFLAG_PLAY;
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ast_closestream(fs);
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if (!(fs = ast_openstream(chan, path, chan->language)))
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break;
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ast_seekstream(fs, samples, SEEK_SET);
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chan->stream = NULL;
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}
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lastop = DMODE_PLAY;
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}
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if (!ast_test_flag(&flags, DFLAG_PAUSE)) {
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for (x = 0; x < speed; x++) {
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if ((fr = ast_readframe(fs))) {
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ast_write(chan, fr);
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samples += fr->samples;
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ast_frfree(fr);
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fr = NULL;
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} else {
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samples = 0;
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ast_seekstream(fs, 0, SEEK_SET);
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}
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}
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}
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break;
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case DMODE_RECORD:
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if (lastop != DMODE_RECORD) {
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int oflags = O_CREAT | O_WRONLY;
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if (ast_test_flag(&flags, DFLAG_PAUSE)) {
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digit = play_and_wait(chan, "dictate/record_mode", AST_DIGIT_ANY);
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if (digit == 0) {
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digit = play_and_wait(chan, "dictate/paused", AST_DIGIT_ANY);
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} else if (digit < 0) {
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break;
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}
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}
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lastop = DMODE_RECORD;
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ast_closestream(fs);
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if ( ast_test_flag(&flags, DFLAG_TRUNC)) {
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oflags |= O_TRUNC;
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digit = play_and_wait(chan, "dictate/truncating_audio", AST_DIGIT_ANY);
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} else {
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oflags |= O_APPEND;
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}
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fs = ast_writefile(path, "raw", NULL, oflags, 0, AST_FILE_MODE);
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if (ast_test_flag(&flags, DFLAG_TRUNC)) {
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ast_seekstream(fs, 0, SEEK_SET);
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ast_clear_flag(&flags, DFLAG_TRUNC);
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} else {
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ast_seekstream(fs, 0, SEEK_END);
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}
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}
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if (!ast_test_flag(&flags, DFLAG_PAUSE)) {
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res = ast_writestream(fs, f);
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}
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break;
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}
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}
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ast_frfree(f);
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}
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}
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if (oldr) {
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ast_set_read_format(chan, oldr);
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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 res;
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res = ast_unregister_application(app);
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return res;
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}
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static int load_module(void)
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{
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return ast_register_application_xml(app, dictate_exec);
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Virtual Dictation Machine");
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