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+/* $Id$ */
+/* 
+ * Copyright (C) 2012-2012 Teluu Inc. (http://www.teluu.com)
+ * Contributed by Regis Montoya (aka r3gis - www.r3gis.fr)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+#ifndef __PJMEDIA_CODEC_SILK_H__
+#define __PJMEDIA_CODEC_SILK_H__
+
+/**
+ * @file silk.h
+ * @brief SILK codec.
+ */
+
+#include <pjmedia-codec/types.h>
+
+/**
+ * @defgroup PJMED_SILK SILK Codec Family
+ * @ingroup PJMEDIA_CODEC_CODECS
+ * @brief Implementation of SILK codecs (narrow/medium/wide/superwide-band).
+ * @{
+ *
+ * This section describes functions to initialize and register SILK codec
+ * factory to the codec manager. After the codec factory has been registered,
+ * application can use @ref PJMEDIA_CODEC API to manipulate the codec.
+ *
+ * The SILK codec uses multiple bit rates, and supports super wideband 
+ * (24 kHz sampling rate), wideband (16 kHz sampling rate), medium (12kHz
+ * sampling rate), and narrowband (telephone quality, 8 kHz sampling rate).
+ *
+ * By default, the SILK codec factory registers two SILK codecs:
+ * "SILK/8000" narrowband codec and "SILK/16000" wideband codec. This behavior
+ * can be changed by specifying #pjmedia_codec_silk_options flags during
+ * initialization.
+ *
+ *
+ * \section codec_setting Codec Settings
+ *
+ * \subsection general_setting General Settings
+ *
+ * General codec settings for this codec such as VAD and PLC can be 
+ * manipulated through the <tt>setting</tt> field in #pjmedia_codec_param. 
+ * Please see the documentation of #pjmedia_codec_param for more info.
+ *
+ * \subsection specific_setting Codec Specific Settings
+ *
+ * The following settings are applicable for this codec.
+ *
+ * \subsubsection quality_vs_complexity Quality vs Complexity
+ *
+ * The SILK codec quality versus computational complexity and bandwidth
+ * requirement can be adjusted by modifying the quality and complexity
+ * setting, by calling #pjmedia_codec_silk_set_config().
+ *
+ * The default setting of quality is specified in 
+ * #PJMEDIA_CODEC_SILK_DEFAULT_QUALITY. And the default setting of
+ * complexity is specified in #PJMEDIA_CODEC_SILK_DEFAULT_COMPLEXITY.
+ */
+
+PJ_BEGIN_DECL
+
+typedef struct pjmedia_codec_silk_setting
+{
+    pj_bool_t	enabled;    /**< Enable/disable.			    */
+    int		quality;    /**< Encoding quality, or use -1 for default 
+ 				 (@see PJMEDIA_CODEC_SILK_DEFAULT_QUALITY). */
+    int 	complexity; /**< Encoding complexity, or use -1 for default
+			         (@see PJMEDIA_CODEC_SILK_DEFAULT_COMPLEXITY)*/
+} pjmedia_codec_silk_setting;
+
+
+/**
+ * Initialize and register SILK codec factory to pjmedia endpoint. By default,
+ * only narrowband (8kHz sampling rate) and wideband (16kHz sampling rate)
+ * will be enabled. Quality and complexity for those sampling rate modes
+ * will be set to the default values (see #PJMEDIA_CODEC_SILK_DEFAULT_QUALITY
+ * and #PJMEDIA_CODEC_SILK_DEFAULT_COMPLEXITY), application may modify these
+ * settings via #pjmedia_codec_silk_set_config().
+ *
+ * @param endpt		The pjmedia endpoint.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_codec_silk_init(pjmedia_endpt *endpt);
+
+
+/**
+ * Change the configuration setting of the SILK codec for the specified
+ * clock rate.
+ *
+ * @param clock_rate	PCM sampling rate, in Hz, valid values are 8000,
+ *			12000, 16000 and 24000.
+ * @param opt		The setting to be applied for the specified
+ *			clock rate.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_codec_silk_set_config(
+				    unsigned clock_rate, 
+				    const pjmedia_codec_silk_setting *opt);
+
+
+/**
+ * Unregister SILK codec factory from pjmedia endpoint and deinitialize
+ * the SILK codec library.
+ *
+ * @return	    PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_codec_silk_deinit(void);
+
+
+PJ_END_DECL
+
+
+/**
+ * @}
+ */
+
+#endif	/* __PJMEDIA_CODEC_SILK_H__ */
+