FS-11014 [core] add vad to core

src/include/switch.h

@@ -145,6 +145,7 @@
 #include "switch_core_video.h"
 #include "switch_jitterbuffer.h"
 #include "switch_estimators.h"
+#include "switch_vad.h"
 #include <libteletone.h>
 
 

src/include/switch_types.h

@@ -622,6 +622,14 @@ typedef enum {
 } switch_vad_flag_enum_t;
 typedef uint32_t switch_vad_flag_t;
 
+typedef enum {
+	SWITCH_VAD_STATE_NONE,
+	SWITCH_VAD_STATE_START_TALKING,
+	SWITCH_VAD_STATE_TALKING,
+	SWITCH_VAD_STATE_STOP_TALKING,
+	SWITCH_VAD_STATE_ERROR
+} switch_vad_state_t;
+typedef struct switch_vad_s switch_vad_t;
 
 typedef struct error_period {
 	int64_t start;

src/include/switch_vad.h

@@ -0,0 +1,66 @@
+/*
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2018, Anthony Minessale II <anthm@freeswitch.org>
+ *
+ * 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 <anthm@freeswitch.org>
+ * Portions created by the Initial Developer are Copyright (C)
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Seven Du <dujinfang@gmail.com>
+ *
+ *
+ * switch_vad.h VAD code with optional libfvad
+ *
+ */
+/*!
+  \defgroup vad1 VAD code with optional libfvad
+  \ingroup core1
+  \{
+*/
+#ifndef FREESWITCH_VAD_H
+#define FREESWITCH_VAD_H
+
+SWITCH_BEGIN_EXTERN_C
+
+SWITCH_DECLARE(switch_vad_t *) switch_vad_init(int sample_rate, int channels);
+
+/*
+ * Valid modes are -1 ("disable fvad, using native"), 0 ("quality"), 1 ("low bitrate"), 2 ("aggressive"), and 3 * ("very aggressive").
+ * The default mode is -1.
+*/
+
+SWITCH_DECLARE(int) switch_vad_set_mode(switch_vad_t *vad, int mode);
+SWITCH_DECLARE(void) switch_vad_set_param(switch_vad_t *vad, const char *key, int val);
+SWITCH_DECLARE(switch_vad_state_t) switch_vad_process(switch_vad_t *vad, int16_t *data, unsigned int samples);
+SWITCH_DECLARE(void) switch_vad_reset(switch_vad_t *vad);
+SWITCH_DECLARE(void) switch_vad_destroy(switch_vad_t **vad);
+
+SWITCH_END_EXTERN_C
+#endif
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
+ */