add mod_rss

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@1551 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/applications/mod_rss/mod_rss.c

@@ -0,0 +1,218 @@
+/* 
+ * 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>
+ *
+ *
+ * mod_rss.c -- RSS Browser
+ *
+ */
+#include <switch.h>
+
+static const char modname[] = "mod_rss";
+
+
+/* helper object */
+struct dtmf_buffer {
+	char *data;
+	char *front;
+	uint32_t len;
+	uint32_t size;
+	switch_file_handle_t fh;
+};
+
+/*
+  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.
+*/
+static switch_status_t on_dtmf(switch_core_session_t *session, char *dtmf, void *buf, unsigned int buflen)
+{
+
+	struct dtmf_buffer *dtb;
+	uint32_t len, slen;
+	dtb = (struct dtmf_buffer *) buf;
+	uint32_t samps = 0, pos = 0;
+
+	if (*dtmf == '#') {
+		return SWITCH_STATUS_FALSE;
+	}
+
+	len = dtb->size - dtb->len;
+	slen = strlen(dtmf);
+
+	if (slen > len) {
+		slen = len;
+	}
+	
+	switch_copy_string(dtb->front, dtmf, len);
+	dtb->front += slen;
+	dtb->len += slen;
+
+	if (dtb->len == 2) {
+		if (*dtb->data == '*') {
+			printf("%s\n", dtb->data);
+			dtb->front = dtb->data;
+			dtb->len = 0;
+			*dtb->data = '\0';
+			switch(*(dtb->data+1)) {
+			case '0':
+				dtb->fh.speed = 0;
+				break;
+			case '1':
+				dtb->fh.speed++;
+				break;
+			case '2':
+				dtb->fh.speed--;
+				break;
+			case '5':
+				{
+					switch_codec_t *codec = switch_core_session_get_read_codec(session);
+					samps = 5000 * (codec->implementation->samples_per_second / 1000);
+					switch_core_file_seek(&dtb->fh, &pos, samps, SEEK_CUR);
+				}
+				break;
+			case '4':
+				{
+					int32_t lpos = 0;
+					switch_codec_t *codec = switch_core_session_get_read_codec(session);
+					
+					samps = 5000 * (codec->implementation->samples_per_second / 1000);
+					lpos = (int) dtb->fh.pos - samps;
+					if (lpos < 0) {
+						lpos = 0;
+					}
+					switch_core_file_seek(&dtb->fh, &pos, lpos, SEEK_SET);
+				}
+				break;
+			case '*':
+				if (switch_test_flag(&dtb->fh, SWITCH_FILE_PAUSE)) {
+					switch_clear_flag(&dtb->fh, SWITCH_FILE_PAUSE);
+				} else {
+					switch_set_flag(&dtb->fh, SWITCH_FILE_PAUSE);
+				}
+				break;
+			}
+			
+			return SWITCH_STATUS_SUCCESS;
+		}
+		return SWITCH_STATUS_BREAK;
+	}
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+
+static void rss_function(switch_core_session_t *session, char *data)
+{
+	switch_channel_t *channel;
+	uint8_t index = 0;
+	char fname[512];
+	switch_status_t status;
+	char buf[10];
+	struct dtmf_buffer dtb;
+
+
+	dtb.data = buf;
+	dtb.front = buf;
+	dtb.len = 0;
+	dtb.size = sizeof(buf);
+
+    channel = switch_core_session_get_channel(session);
+    assert(channel != NULL);
+
+	if (switch_strlen_zero(data)) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "No Path Specified!\n");
+		return;
+	}
+
+	switch_channel_answer(channel);
+	
+	while(switch_channel_ready(channel)) {
+		snprintf(fname, sizeof(fname), "%s/%.2u.raw", data, index);
+		memset(&dtb.fh, 0, sizeof(dtb.fh));
+		if ((status = switch_ivr_play_file(session, &dtb.fh, fname, NULL, on_dtmf, &dtb, sizeof(dtb))) == SWITCH_STATUS_FALSE) {
+			break;
+		}
+
+		index = atoi(buf);
+
+		/* reset for next loop */
+		*buf = '\0';
+		dtb.front = buf;
+		dtb.len = 0;
+	}
+	
+
+
+}
+
+static const switch_application_interface_t rss_application_interface = {
+	/*.interface_name */ "rss",
+	/*.application_function */ rss_function,
+	NULL, NULL, NULL,
+	/*.next*/ NULL
+};
+
+
+static switch_loadable_module_interface_t rss_module_interface = {
+	/*.module_name */ modname,
+	/*.endpoint_interface */ NULL,
+	/*.timer_interface */ NULL,
+	/*.dialplan_interface */ NULL,
+	/*.codec_interface */ NULL,
+	/*.application_interface */ &rss_application_interface,
+	/*.api_interface */ NULL,
+	/*.file_interface */ NULL,
+	/*.speech_interface */ NULL,
+	/*.directory_interface */ NULL
+};
+
+
+SWITCH_MOD_DECLARE(switch_status_t) switch_module_load(const switch_loadable_module_interface_t **module_interface, char *filename)
+{
+	/* connect my internal structure to the blank pointer passed to me */
+	*module_interface = &rss_module_interface;
+
+	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Hello World!\n");
+
+	/* indicate that the module should continue to be loaded */
+	return SWITCH_STATUS_SUCCESS;
+}
+
+/*
+  Called when the system shuts down
+  SWITCH_MOD_DECLARE(switch_status) switch_module_shutdown(void)
+  {
+  return SWITCH_STATUS_SUCCESS;
+  }
+*/
+
+/*
+  If it exists, this is called in it's own thread when the module-load completes
+  SWITCH_MOD_DECLARE(switch_status) switch_module_shutdown(void)
+  {
+  return SWITCH_STATUS_SUCCESS;
+  }
+*/