]> git.ipfire.org Git - thirdparty/freeswitch.git/commitdiff
IVR groundwork (move playback into the core and add timing option)
authorAnthony Minessale <anthony.minessale@gmail.com>
Thu, 26 Jan 2006 18:00:27 +0000 (18:00 +0000)
committerAnthony Minessale <anthony.minessale@gmail.com>
Thu, 26 Jan 2006 18:00:27 +0000 (18:00 +0000)
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@448 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/switch_ivr.h [new file with mode: 0644]
src/switch_ivr.c [new file with mode: 0644]

diff --git a/src/include/switch_ivr.h b/src/include/switch_ivr.h
new file mode 100644 (file)
index 0000000..890360f
--- /dev/null
@@ -0,0 +1,76 @@
+/* 
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
+ *
+ * Version: MPL 1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ *
+ * The Initial Developer of the Original Code is
+ * Anthony Minessale II <anthmct@yahoo.com>
+ * Portions created by the Initial Developer are Copyright (C)
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ * 
+ * Anthony Minessale II <anthmct@yahoo.com>
+ *
+ *
+ * switch_ivr.h -- IVR Library
+ *
+ */
+/** 
+ * @file switch_ivr.h
+ * @brief IVR Library
+ * @see switch_ivr
+ */
+
+#ifndef SWITCH_IVR_H
+#define SWITCH_IVR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <switch.h>
+
+/**
+ * @defgroup switch_ivr IVR Library
+ * @ingroup FREESWITCH
+ *     A group of core functions to do IVR related functions designed to be 
+ *     building blocks for a higher level IVR interface.
+ * @{
+ */
+
+/*!
+  \brief play a file from the disk to the session
+  \param session the session to play the file too
+  \param file the path to the file
+  \param timer_name the name of a timer to use input will be absorbed (NULL to time off the session input).
+  \param dtmf_callback code to execute if any dtmf is dialed during the playback
+  \return SWITCH_STATUS_SUCCESS if all is well
+*/
+SWITCH_DECLARE(switch_status) switch_ivr_play_file(switch_core_session *session,
+                                                                                                  char *file,
+                                                                                                  char *timer_name,
+                                                                                                  switch_dtmf_callback_function dtmf_callback);
+       
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+
diff --git a/src/switch_ivr.c b/src/switch_ivr.c
new file mode 100644 (file)
index 0000000..566b4ce
--- /dev/null
@@ -0,0 +1,184 @@
+/* 
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
+ *
+ * Version: MPL 1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ *
+ * The Initial Developer of the Original Code is
+ * Anthony Minessale II <anthmct@yahoo.com>
+ * Portions created by the Initial Developer are Copyright (C)
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ * 
+ * Anthony Minessale II <anthmct@yahoo.com>
+ *
+ *
+ * switch_ivr_api.c -- IVR Library
+ *
+ */
+#include <switch.h>
+#include <switch_ivr.h>
+
+
+/* TBD (Lots! there is only 1 function in here lol) */
+
+SWITCH_DECLARE(switch_status) switch_ivr_play_file(switch_core_session *session, 
+                                                                                                  char *file,
+                                                                                                  char *timer_name,
+                                                                                                  switch_dtmf_callback_function dtmf_callback)
+{
+       switch_channel *channel;
+       short buf[960];
+       char dtmf[128];
+       int interval = 0, samples = 0;
+       size_t len = 0, ilen = 0;
+       switch_frame write_frame;
+       switch_timer timer;
+       switch_core_thread_session thread_session;
+       switch_codec codec;
+       switch_memory_pool *pool = switch_core_session_get_pool(session);
+       switch_file_handle fh;
+       char *codec_name;
+       int x;
+       int stream_id;
+       switch_status status = SWITCH_STATUS_SUCCESS;
+
+
+       channel = switch_core_session_get_channel(session);
+       assert(channel != NULL);
+
+       if (switch_core_file_open(&fh,
+                                                         file,
+                                                         SWITCH_FILE_FLAG_READ | SWITCH_FILE_DATA_SHORT,
+                                                         switch_core_session_get_pool(session)) != SWITCH_STATUS_SUCCESS) {
+               switch_channel_hangup(channel);
+               return SWITCH_STATUS_GENERR;
+       }
+
+       switch_channel_answer(channel);
+
+       write_frame.data = buf;
+       write_frame.buflen = sizeof(buf);
+
+
+       switch_console_printf(SWITCH_CHANNEL_CONSOLE, "OPEN FILE %s %dhz %d channels\n", file, fh.samplerate, fh.channels);
+
+       interval = 20;
+       samples = (fh.samplerate / 50) * fh.channels;
+       len = samples * 2;
+
+       codec_name = "L16";
+
+       if (switch_core_codec_init(&codec,
+                                                          codec_name,
+                                                          fh.samplerate,
+                                                          interval,
+                                                          fh.channels,
+                                                          SWITCH_CODEC_FLAG_ENCODE | SWITCH_CODEC_FLAG_DECODE,
+                                                          NULL, pool) == SWITCH_STATUS_SUCCESS) {
+               switch_console_printf(SWITCH_CHANNEL_CONSOLE, "Raw Codec Activated\n");
+               write_frame.codec = &codec;
+       } else {
+               switch_console_printf(SWITCH_CHANNEL_CONSOLE, "Raw Codec Activation Failed %s@%dhz %d channels %dms\n",
+                                                         codec_name, fh.samplerate, fh.channels, interval);
+               switch_core_file_close(&fh);
+               return SWITCH_STATUS_GENERR;
+       }
+
+       if (timer_name) {
+               if (switch_core_timer_init(&timer, timer_name, interval, samples, pool) != SWITCH_STATUS_SUCCESS) {
+                       switch_console_printf(SWITCH_CHANNEL_CONSOLE, "setup timer failed!\n");
+                       switch_core_codec_destroy(&codec);
+                       switch_core_file_close(&fh);
+                       return SWITCH_STATUS_GENERR;
+               }
+               switch_console_printf(SWITCH_CHANNEL_CONSOLE, "setup timer success %d bytes per %d ms!\n", len, interval);
+       }
+       write_frame.rate = fh.samplerate;
+
+       if (timer_name) {
+               /* start a thread to absorb incoming audio */
+               for (stream_id = 0; stream_id < switch_core_session_get_stream_count(session); stream_id++) {
+                       switch_core_service_session(session, &thread_session, stream_id);
+               }
+       }
+
+       ilen = samples;
+       while (switch_channel_get_state(channel) == CS_EXECUTE) {
+               int done = 0;
+
+               if (dtmf_callback) {
+                       /*
+                         dtmf handler function you can hook up to be executed when a digit is dialed during playback 
+                         if you return anything but SWITCH_STATUS_SUCCESS the playback will stop.
+                       */
+                       if (switch_channel_has_dtmf(channel)) {
+                               switch_channel_dequeue_dtmf(channel, dtmf, sizeof(dtmf));
+                               status = dtmf_callback(session, dtmf);
+                       }
+
+                       if (status != SWITCH_STATUS_SUCCESS) {
+                               done = 1;
+                               break;
+                       }
+               }
+               
+               switch_core_file_read(&fh, buf, &ilen);
+
+               if (done || ilen <= 0) {
+                       break;
+               }
+
+               write_frame.datalen = ilen * 2;
+               write_frame.samples = (int) ilen;
+#ifdef SWAP_LINEAR
+               switch_swap_linear(write_frame.data, (int) write_frame.datalen / 2);
+#endif
+
+               for (stream_id = 0; stream_id < switch_core_session_get_stream_count(session); stream_id++) {
+                       if (switch_core_session_write_frame(session, &write_frame, -1, stream_id) != SWITCH_STATUS_SUCCESS) {
+                               switch_console_printf(SWITCH_CHANNEL_CONSOLE, "Bad Write\n");
+                               done = 1;
+                               break;
+                       }
+
+                       if (done) {
+                               break;
+                       }
+               }
+               if (timer_name) {
+                       if ((x = switch_core_timer_next(&timer)) < 0) {
+                               break;
+                       }
+               } else { /* time off the channel (if you must) */
+                       switch_frame *read_frame;
+                       switch_core_session_read_frame(session, &read_frame, -1, 0);
+               }
+       }
+
+       switch_console_printf(SWITCH_CHANNEL_CONSOLE, "done playing file\n");
+       switch_core_file_close(&fh);
+
+       switch_core_codec_destroy(&codec);
+
+       if (timer_name) {
+               /* End the audio absorbing thread */
+               switch_core_thread_session_end(&thread_session);
+               switch_core_timer_destroy(&timer);
+       }
+
+       return status;
+}