apps/app_dictate.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 2005, Anthony Minessale II
   5  *
   6  * Anthony Minessale II <anthmct@yahoo.com>
   7  *
   8  * Donated by Sangoma Technologies <http://www.samgoma.com>
   9  *
  10  * See http://www.asterisk.org for more information about
  11  * the Asterisk project. Please do not directly contact
  12  * any of the maintainers of this project for assistance;
  13  * the project provides a web site, mailing lists and IRC
  14  * channels for your use.
  15  *
  16  * This program is free software, distributed under the terms of
  17  * the GNU General Public License Version 2. See the LICENSE file
  18  * at the top of the source tree.
  19  */
  20
  21 /*! \file
  22  *
  23  * \brief Virtual Dictation Machine Application For Asterisk
  24  *
  25  * \author Anthony Minessale II <anthmct@yahoo.com>
  26  *
  27  * \ingroup applications
  28  */
  29
  30 #include "asterisk.h"
  31
  32 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  33
  34 #include <sys/stat.h>
  35
  36 #include "asterisk/paths.h" /* use ast_config_AST_SPOOL_DIR */
  37 #include "asterisk/file.h"
  38 #include "asterisk/pbx.h"
  39 #include "asterisk/module.h"
  40 #include "asterisk/say.h"
  41 #include "asterisk/app.h"
  42
  43 static char *app = "Dictate";
  44 static char *synopsis = "Virtual Dictation Machine";
  45 static char *desc = "  Dictate([<base_dir>[,<filename>]])\n"
  46 "Start dictation machine using optional base dir for files.\n";
  47
  48
  49 typedef enum {
  50         DFLAG_RECORD = (1 << 0),
  51         DFLAG_PLAY = (1 << 1),
  52         DFLAG_TRUNC = (1 << 2),
  53         DFLAG_PAUSE = (1 << 3),
  54 } dflags;
  55
  56 typedef enum {
  57         DMODE_INIT,
  58         DMODE_RECORD,
  59         DMODE_PLAY
  60 } dmodes;
  61
  62 #define ast_toggle_flag(it,flag) if(ast_test_flag(it, flag)) ast_clear_flag(it, flag); else ast_set_flag(it, flag)
  63
  64 static int play_and_wait(struct ast_channel *chan, char *file, char *digits)
  65 {
  66         int res = -1;
  67         if (!ast_streamfile(chan, file, chan->language)) {
  68                 res = ast_waitstream(chan, digits);
  69         }
  70         return res;
  71 }
  72
  73 static int dictate_exec(struct ast_channel *chan, void *data)
  74 {
  75         char *path = NULL, filein[256], *filename = "";
  76         char *parse;
  77         AST_DECLARE_APP_ARGS(args,
  78                 AST_APP_ARG(base);
  79                 AST_APP_ARG(filename);
  80         );
  81         char dftbase[256];
  82         char *base;
  83         struct ast_flags flags = {0};
  84         struct ast_filestream *fs;
  85         struct ast_frame *f = NULL;
  86         int ffactor = 320 * 80,
  87                 res = 0,
  88                 done = 0,
  89                 oldr = 0,
  90                 lastop = 0,
  91                 samples = 0,
  92                 speed = 1,
  93                 digit = 0,
  94                 len = 0,
  95                 maxlen = 0,
  96                 mode = 0;
  97
  98         snprintf(dftbase, sizeof(dftbase), "%s/dictate", ast_config_AST_SPOOL_DIR);
  99         if (!ast_strlen_zero(data)) {
 100                 parse = ast_strdupa(data);
 101                 AST_STANDARD_APP_ARGS(args, parse);
 102         } else
 103                 args.argc = 0;
 104
 105         if (args.argc && !ast_strlen_zero(args.base)) {
 106                 base = args.base;
 107         } else {
 108                 base = dftbase;
 109         }
 110         if (args.argc > 1 && args.filename) {
 111                 filename = args.filename;
 112         }
 113         oldr = chan->readformat;
 114         if ((res = ast_set_read_format(chan, AST_FORMAT_SLINEAR)) < 0) {
 115                 ast_log(LOG_WARNING, "Unable to set to linear mode.\n");
 116                 return -1;
 117         }
 118
 119         ast_answer(chan);
 120         ast_safe_sleep(chan, 200);
 121         for (res = 0; !res;) {
 122                 if (ast_strlen_zero(filename)) {
 123                         if (ast_app_getdata(chan, "dictate/enter_filename", filein, sizeof(filein), 0) ||
 124                                 ast_strlen_zero(filein)) {
 125                                 res = -1;
 126                                 break;
 127                         }
 128                 } else {
 129                         ast_copy_string(filein, filename, sizeof(filein));
 130                         filename = "";
 131                 }
 132                 ast_mkdir(base, 0755);
 133                 len = strlen(base) + strlen(filein) + 2;
 134                 if (!path || len > maxlen) {
 135                         path = alloca(len);
 136                         memset(path, 0, len);
 137                         maxlen = len;
 138                 } else {
 139                         memset(path, 0, maxlen);
 140                 }
 141
 142                 snprintf(path, len, "%s/%s", base, filein);
 143                 fs = ast_writefile(path, "raw", NULL, O_CREAT|O_APPEND, 0, AST_FILE_MODE);
 144                 mode = DMODE_PLAY;
 145                 memset(&flags, 0, sizeof(flags));
 146                 ast_set_flag(&flags, DFLAG_PAUSE);
 147                 digit = play_and_wait(chan, "dictate/forhelp", AST_DIGIT_ANY);
 148                 done = 0;
 149                 speed = 1;
 150                 res = 0;
 151                 lastop = 0;
 152                 samples = 0;
 153                 while (!done && ((res = ast_waitfor(chan, -1)) > -1) && fs && (f = ast_read(chan))) {
 154                         if (digit) {
 155                                 struct ast_frame fr = {AST_FRAME_DTMF, digit};
 156                                 ast_queue_frame(chan, &fr);
 157                                 digit = 0;
 158                         }
 159                         if ((f->frametype == AST_FRAME_DTMF)) {
 160                                 int got = 1;
 161                                 switch(mode) {
 162                                 case DMODE_PLAY:
 163                                         switch(f->subclass) {
 164                                         case '1':
 165                                                 ast_set_flag(&flags, DFLAG_PAUSE);
 166                                                 mode = DMODE_RECORD;
 167                                                 break;
 168                                         case '2':
 169                                                 speed++;
 170                                                 if (speed > 4) {
 171                                                         speed = 1;
 172                                                 }
 173                                                 res = ast_say_number(chan, speed, AST_DIGIT_ANY, chan->language, NULL);
 174                                                 break;
 175                                         case '7':
 176                                                 samples -= ffactor;
 177                                                 if(samples < 0) {
 178                                                         samples = 0;
 179                                                 }
 180                                                 ast_seekstream(fs, samples, SEEK_SET);
 181                                                 break;
 182                                         case '8':
 183                                                 samples += ffactor;
 184                                                 ast_seekstream(fs, samples, SEEK_SET);
 185                                                 break;
 186
 187                                         default:
 188                                                 got = 0;
 189                                         }
 190                                         break;
 191                                 case DMODE_RECORD:
 192                                         switch(f->subclass) {
 193                                         case '1':
 194                                                 ast_set_flag(&flags, DFLAG_PAUSE);
 195                                                 mode = DMODE_PLAY;
 196                                                 break;
 197                                         case '8':
 198                                                 ast_toggle_flag(&flags, DFLAG_TRUNC);
 199                                                 lastop = 0;
 200                                                 break;
 201                                         default:
 202                                                 got = 0;
 203                                         }
 204                                         break;
 205                                 default:
 206                                         got = 0;
 207                                 }
 208                                 if (!got) {
 209                                         switch(f->subclass) {
 210                                         case '#':
 211                                                 done = 1;
 212                                                 continue;
 213                                                 break;
 214                                         case '*':
 215                                                 ast_toggle_flag(&flags, DFLAG_PAUSE);
 216                                                 if (ast_test_flag(&flags, DFLAG_PAUSE)) {
 217                                                         digit = play_and_wait(chan, "dictate/pause", AST_DIGIT_ANY);
 218                                                 } else {
 219                                                         digit = play_and_wait(chan, mode == DMODE_PLAY ? "dictate/playback" : "dictate/record", AST_DIGIT_ANY);
 220                                                 }
 221                                                 break;
 222                                         case '0':
 223                                                 ast_set_flag(&flags, DFLAG_PAUSE);
 224                                                 digit = play_and_wait(chan, "dictate/paused", AST_DIGIT_ANY);
 225                                                 switch(mode) {
 226                                                 case DMODE_PLAY:
 227                                                         digit = play_and_wait(chan, "dictate/play_help", AST_DIGIT_ANY);
 228                                                         break;
 229                                                 case DMODE_RECORD:
 230                                                         digit = play_and_wait(chan, "dictate/record_help", AST_DIGIT_ANY);
 231                                                         break;
 232                                                 }
 233                                                 if (digit == 0) {
 234                                                         digit = play_and_wait(chan, "dictate/both_help", AST_DIGIT_ANY);
 235                                                 } else if (digit < 0) {
 236                                                         done = 1;
 237                                                         break;
 238                                                 }
 239                                                 break;
 240                                         }
 241                                 }
 242
 243                         } else if (f->frametype == AST_FRAME_VOICE) {
 244                                 switch(mode) {
 245                                         struct ast_frame *fr;
 246                                         int x;
 247                                 case DMODE_PLAY:
 248                                         if (lastop != DMODE_PLAY) {
 249                                                 if (ast_test_flag(&flags, DFLAG_PAUSE)) {
 250                                                         digit = play_and_wait(chan, "dictate/playback_mode", AST_DIGIT_ANY);
 251                                                         if (digit == 0) {
 252                                                                 digit = play_and_wait(chan, "dictate/paused", AST_DIGIT_ANY);
 253                                                         } else if (digit < 0) {
 254                                                                 break;
 255                                                         }
 256                                                 }
 257                                                 if (lastop != DFLAG_PLAY) {
 258                                                         lastop = DFLAG_PLAY;
 259                                                         ast_closestream(fs);
 260                                                         if (!(fs = ast_openstream(chan, path, chan->language)))
 261                                                                 break;
 262                                                         ast_seekstream(fs, samples, SEEK_SET);
 263                                                         chan->stream = NULL;
 264                                                 }
 265                                                 lastop = DMODE_PLAY;
 266                                         }
 267
 268                                         if (!ast_test_flag(&flags, DFLAG_PAUSE)) {
 269                                                 for (x = 0; x < speed; x++) {
 270                                                         if ((fr = ast_readframe(fs))) {
 271                                                                 ast_write(chan, fr);
 272                                                                 samples += fr->samples;
 273                                                                 ast_frfree(fr);
 274                                                                 fr = NULL;
 275                                                         } else {
 276                                                                 samples = 0;
 277                                                                 ast_seekstream(fs, 0, SEEK_SET);
 278                                                         }
 279                                                 }
 280                                         }
 281                                         break;
 282                                 case DMODE_RECORD:
 283                                         if (lastop != DMODE_RECORD) {
 284                                                 int oflags = O_CREAT | O_WRONLY;
 285                                                 if (ast_test_flag(&flags, DFLAG_PAUSE)) {
 286                                                         digit = play_and_wait(chan, "dictate/record_mode", AST_DIGIT_ANY);
 287                                                         if (digit == 0) {
 288                                                                 digit = play_and_wait(chan, "dictate/paused", AST_DIGIT_ANY);
 289                                                         } else if (digit < 0) {
 290                                                                 break;
 291                                                         }
 292                                                 }
 293                                                 lastop = DMODE_RECORD;
 294                                                 ast_closestream(fs);
 295                                                 if ( ast_test_flag(&flags, DFLAG_TRUNC)) {
 296                                                         oflags |= O_TRUNC;
 297                                                         digit = play_and_wait(chan, "dictate/truncating_audio", AST_DIGIT_ANY);
 298                                                 } else {
 299                                                         oflags |= O_APPEND;
 300                                                 }
 301                                                 fs = ast_writefile(path, "raw", NULL, oflags, 0, AST_FILE_MODE);
 302                                                 if (ast_test_flag(&flags, DFLAG_TRUNC)) {
 303                                                         ast_seekstream(fs, 0, SEEK_SET);
 304                                                         ast_clear_flag(&flags, DFLAG_TRUNC);
 305                                                 } else {
 306                                                         ast_seekstream(fs, 0, SEEK_END);
 307                                                 }
 308                                         }
 309                                         if (!ast_test_flag(&flags, DFLAG_PAUSE)) {
 310                                                 res = ast_writestream(fs, f);
 311                                         }
 312                                         break;
 313                                 }
 314
 315                         }
 316
 317                         ast_frfree(f);
 318                 }
 319         }
 320         if (oldr) {
 321                 ast_set_read_format(chan, oldr);
 322         }
 323         return 0;
 324 }
 325
 326 static int unload_module(void)
 327 {
 328         int res;
 329         res = ast_unregister_application(app);
 330         return res;
 331 }
 332
 333 static int load_module(void)
 334 {
 335         return ast_register_application(app, dictate_exec, synopsis, desc);
 336 }
 337
 338 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Virtual Dictation Machine");