diff --git a/jni/pjproject-android/.svn/pristine/81/81b66f9155082e766d60cd20a3214501672e0c73.svn-base b/jni/pjproject-android/.svn/pristine/81/81b66f9155082e766d60cd20a3214501672e0c73.svn-base
new file mode 100644
index 0000000..3f7bf8f
--- /dev/null
+++ b/jni/pjproject-android/.svn/pristine/81/81b66f9155082e766d60cd20a3214501672e0c73.svn-base
@@ -0,0 +1,953 @@
+/* $Id$ */
+/* 
+ * 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 
+ */
+
+#include <pjmedia-codec/silk.h>
+#include <pjmedia/codec.h>
+#include <pjmedia/delaybuf.h>
+#include <pjmedia/endpoint.h>
+#include <pjmedia/errno.h>
+#include <pjmedia/port.h>
+#include <pj/pool.h>
+#include <pj/string.h>
+#include <pj/assert.h>
+#include <pj/log.h>
+
+#if defined(PJMEDIA_HAS_SILK_CODEC) && (PJMEDIA_HAS_SILK_CODEC!=0)
+
+#include "SKP_Silk_SDK_API.h"
+
+#define THIS_FILE		"silk.c"
+
+#ifndef PJMEDIA_SILK_DELAY_BUF_OPTIONS
+    #define PJMEDIA_SILK_DELAY_BUF_OPTIONS PJMEDIA_DELAY_BUF_SIMPLE_FIFO
+#endif
+
+#define FRAME_LENGTH_MS                 20
+#define SILK_ENC_CTL_PACKET_LOSS_PCT    10
+#define SILK_MIN_BITRATE                5000
+#define CALC_BITRATE_QUALITY(quality, max_br) \
+                (quality * max_br / 10)
+#define CALC_BITRATE(max_br) \
+                CALC_BITRATE_QUALITY(PJMEDIA_CODEC_SILK_DEFAULT_QUALITY, \
+                                     max_br);
+
+
+/* Prototypes for SILK factory */
+static pj_status_t silk_test_alloc( pjmedia_codec_factory *factory,
+				    const pjmedia_codec_info *id );
+static pj_status_t silk_default_attr( pjmedia_codec_factory *factory,
+				      const pjmedia_codec_info *id,
+				      pjmedia_codec_param *attr );
+static pj_status_t silk_enum_codecs ( pjmedia_codec_factory *factory,
+				      unsigned *count,
+				      pjmedia_codec_info codecs[]);
+static pj_status_t silk_alloc_codec( pjmedia_codec_factory *factory,
+				     const pjmedia_codec_info *id,
+				     pjmedia_codec **p_codec);
+static pj_status_t silk_dealloc_codec( pjmedia_codec_factory *factory,
+				       pjmedia_codec *codec );
+
+/* Prototypes for SILK implementation. */
+static pj_status_t  silk_codec_init( pjmedia_codec *codec,
+				     pj_pool_t *pool );
+static pj_status_t  silk_codec_open( pjmedia_codec *codec,
+				     pjmedia_codec_param *attr );
+static pj_status_t  silk_codec_close( pjmedia_codec *codec );
+static pj_status_t  silk_codec_modify( pjmedia_codec *codec,
+				       const pjmedia_codec_param *attr );
+static pj_status_t  silk_codec_parse( pjmedia_codec *codec,
+				      void *pkt,
+				      pj_size_t pkt_size,
+				      const pj_timestamp *timestamp,
+				      unsigned *frame_cnt,
+				      pjmedia_frame frames[]);
+static pj_status_t  silk_codec_encode( pjmedia_codec *codec,
+				       const struct pjmedia_frame *input,
+				       unsigned output_buf_len,
+				       struct pjmedia_frame *output);
+static pj_status_t  silk_codec_decode( pjmedia_codec *codec,
+				       const struct pjmedia_frame *input,
+				       unsigned output_buf_len,
+				       struct pjmedia_frame *output);
+static pj_status_t  silk_codec_recover( pjmedia_codec *codec,
+					unsigned output_buf_len,
+					struct pjmedia_frame *output);
+
+
+typedef enum
+{
+    PARAM_NB,   /* Index for narrowband parameter.	*/
+    PARAM_MB,	/* Index for medium parameter.		*/
+    PARAM_WB,	/* Index for wideband parameter.	*/
+    PARAM_SWB,	/* Index for super-wideband parameter	*/
+} silk_mode;
+
+
+/* Silk default parameter */
+typedef struct silk_param
+{
+    int		 enabled;	    /* Is this mode enabled?		    */
+    int		 pt;		    /* Payload type.			    */
+    unsigned	 clock_rate;	    /* Default sampling rate to be used.    */
+    pj_uint16_t	 ptime;		    /* packet length (in ms).		    */
+    pj_uint32_t  bitrate;	    /* Bit rate for current mode.	    */
+    pj_uint32_t  max_bitrate;	    /* Max bit rate for current mode.	    */
+    int 	 complexity;	    /* Complexity mode: 0/lowest to 2.	    */
+} silk_param;
+
+
+/* Definition for SILK codec operations. */
+static pjmedia_codec_op silk_op =
+{
+    &silk_codec_init,
+    &silk_codec_open,
+    &silk_codec_close,
+    &silk_codec_modify,
+    &silk_codec_parse,
+    &silk_codec_encode,
+    &silk_codec_decode,
+    &silk_codec_recover
+};
+
+/* Definition for SILK codec factory operations. */
+static pjmedia_codec_factory_op silk_factory_op =
+{
+    &silk_test_alloc,
+    &silk_default_attr,
+    &silk_enum_codecs,
+    &silk_alloc_codec,
+    &silk_dealloc_codec,
+    &pjmedia_codec_silk_deinit
+};
+
+
+/* SILK factory private data */
+static struct silk_factory
+{
+    pjmedia_codec_factory	base;
+    pjmedia_endpt	       *endpt;
+    pj_pool_t		       *pool;
+    pj_mutex_t		       *mutex;
+    struct silk_param		silk_param[4];
+} silk_factory;
+
+
+/* SILK codec private data. */
+typedef struct silk_private
+{
+    silk_mode	 mode;		/**< Silk mode.	*/
+    pj_pool_t	*pool;		/**< Pool for each instance.    */
+    unsigned	 samples_per_frame;
+    pj_uint8_t   pcm_bytes_per_sample;
+
+    pj_bool_t	 enc_ready;
+    SKP_SILK_SDK_EncControlStruct enc_ctl;
+    void	*enc_st;
+
+    pj_bool_t	 dec_ready;
+    SKP_SILK_SDK_DecControlStruct dec_ctl;
+    void	*dec_st;
+
+    /* Buffer to hold decoded frames. */
+    void        *dec_buf[SILK_MAX_FRAMES_PER_PACKET-1];
+    SKP_int16    dec_buf_size[SILK_MAX_FRAMES_PER_PACKET-1];
+    pj_size_t    dec_buf_sz;
+    unsigned     dec_buf_cnt;
+    pj_uint32_t  pkt_info;    /**< Packet info for buffered frames.  */
+} silk_private;
+
+
+silk_mode silk_get_mode_from_clock_rate(unsigned clock_rate) {
+    if (clock_rate <= silk_factory.silk_param[PARAM_NB].clock_rate) {
+	return PARAM_NB;
+    } else if (clock_rate <= silk_factory.silk_param[PARAM_MB].clock_rate) {
+	return PARAM_MB;
+    } else if (clock_rate <= silk_factory.silk_param[PARAM_WB].clock_rate) {
+	return PARAM_WB;
+    }
+    return PARAM_SWB;
+}
+
+
+PJ_DEF(pj_status_t) pjmedia_codec_silk_init(pjmedia_endpt *endpt)
+{
+    pjmedia_codec_mgr *codec_mgr;
+    silk_param *sp;
+    pj_status_t status;
+
+    if (silk_factory.endpt != NULL) {
+	/* Already initialized. */
+	return PJ_SUCCESS;
+    }
+
+    /* Init factory */
+    pj_bzero(&silk_factory, sizeof(silk_factory));
+    silk_factory.base.op = &silk_factory_op;
+    silk_factory.base.factory_data = NULL;
+    silk_factory.endpt = endpt;
+
+    /* Create pool */
+    silk_factory.pool = pjmedia_endpt_create_pool(endpt, "silk", 4000, 4000);
+    if (!silk_factory.pool)
+	return PJ_ENOMEM;
+
+    /* Create mutex. */
+    status = pj_mutex_create_simple(silk_factory.pool, "silk",
+				    &silk_factory.mutex);
+    if (status != PJ_SUCCESS)
+	goto on_error;
+
+    /* Initialize default codec params */
+
+    /* From SILK docs:
+       - SILK bitrate tables:
+         +----------------+---------+-----------+
+         |                | fs (Hz) | BR (kbps) |
+         +----------------+---------+-----------+
+         |   Narrowband   |   8000  |   6 - 20  |
+         |   Mediumband   |  12000  |   7 - 25  |
+         |    Wideband    |  16000  |   8 - 30  |
+         | Super Wideband |  24000  |  12 - 40  |
+         +----------------+---------+-----------+
+       - The upper limits of the bit rate ranges in this table are
+         recommended values.
+     */
+
+    sp = &silk_factory.silk_param[PARAM_NB];
+    sp->pt = PJMEDIA_RTP_PT_SILK_NB;
+    sp->clock_rate = 8000;
+    sp->max_bitrate = 22000;
+    sp->bitrate = CALC_BITRATE(sp->max_bitrate);
+    sp->ptime = FRAME_LENGTH_MS;
+    sp->complexity = PJMEDIA_CODEC_SILK_DEFAULT_COMPLEXITY;
+    sp->enabled = 1;
+
+    sp = &silk_factory.silk_param[PARAM_MB];
+    sp->pt = PJMEDIA_RTP_PT_SILK_MB;
+    sp->clock_rate = 12000;
+    sp->max_bitrate = 28000;
+    sp->bitrate = CALC_BITRATE(sp->max_bitrate);
+    sp->ptime = FRAME_LENGTH_MS;
+    sp->complexity = PJMEDIA_CODEC_SILK_DEFAULT_COMPLEXITY;
+    sp->enabled = 0;
+
+    sp = &silk_factory.silk_param[PARAM_WB];
+    sp->pt = PJMEDIA_RTP_PT_SILK_WB;
+    sp->clock_rate = 16000;
+    sp->max_bitrate = 36000;
+    sp->bitrate = CALC_BITRATE(sp->max_bitrate);
+    sp->ptime = FRAME_LENGTH_MS;
+    sp->complexity = PJMEDIA_CODEC_SILK_DEFAULT_COMPLEXITY;
+    sp->enabled = 1;
+
+    sp = &silk_factory.silk_param[PARAM_SWB];
+    sp->pt = PJMEDIA_RTP_PT_SILK_SWB;
+    sp->clock_rate = 24000;
+    sp->max_bitrate = 46000;
+    sp->bitrate = CALC_BITRATE(sp->max_bitrate);
+    sp->ptime = FRAME_LENGTH_MS;
+    sp->complexity = PJMEDIA_CODEC_SILK_DEFAULT_COMPLEXITY;
+    sp->enabled = 0;
+
+
+    /* Get the codec manager. */
+    codec_mgr = pjmedia_endpt_get_codec_mgr(endpt);
+    if (!codec_mgr) {
+	return PJ_EINVALIDOP;
+    }
+
+    /* Register codec factory to endpoint. */
+    status = pjmedia_codec_mgr_register_factory(codec_mgr,
+						&silk_factory.base);
+    if (status != PJ_SUCCESS)
+	return status;
+
+    PJ_LOG(4,(THIS_FILE, "SILK codec version %s initialized",
+	      SKP_Silk_SDK_get_version()));
+    return PJ_SUCCESS;
+
+on_error:
+    if (silk_factory.mutex) {
+	pj_mutex_destroy(silk_factory.mutex);
+	silk_factory.mutex = NULL;
+    }
+    if (silk_factory.pool) {
+	pj_pool_release(silk_factory.pool);
+	silk_factory.pool = NULL;
+    }
+
+    return status;
+}
+
+
+/*
+ * Change the configuration setting of the SILK codec for the specified
+ * clock rate.
+ */
+PJ_DEF(pj_status_t) pjmedia_codec_silk_set_config(
+				    unsigned clock_rate, 
+				    const pjmedia_codec_silk_setting *opt)
+{
+    unsigned i;
+
+    /* Look up in factory modes table */
+    for (i = 0; i < sizeof(silk_factory.silk_param)/
+                    sizeof(silk_factory.silk_param[0]); ++i)
+    {
+        if (silk_factory.silk_param[i].clock_rate == clock_rate) {
+            int quality = PJMEDIA_CODEC_SILK_DEFAULT_QUALITY;
+            int complexity = PJMEDIA_CODEC_SILK_DEFAULT_COMPLEXITY;
+
+	    silk_factory.silk_param[i].enabled = opt->enabled;
+            if (opt->complexity >= 0)
+                complexity = opt->complexity;
+            silk_factory.silk_param[i].complexity = complexity;
+            if (opt->quality >= 0)
+                quality = opt->quality;
+            silk_factory.silk_param[i].bitrate =
+                CALC_BITRATE_QUALITY(quality,
+                                     silk_factory.silk_param[i].max_bitrate);
+            if (silk_factory.silk_param[i].bitrate < SILK_MIN_BITRATE)
+                silk_factory.silk_param[i].bitrate = SILK_MIN_BITRATE;
+
+	    return PJ_SUCCESS;
+	}
+    }
+
+    return PJ_ENOTFOUND;
+}
+
+
+/*
+ * Unregister SILK codec factory from pjmedia endpoint and deinitialize
+ * the SILK codec library.
+ */
+PJ_DEF(pj_status_t) pjmedia_codec_silk_deinit(void)
+{
+    pjmedia_codec_mgr *codec_mgr;
+    pj_status_t status;
+
+    if (silk_factory.endpt == NULL) {
+	/* Not registered. */
+	return PJ_SUCCESS;
+    }
+
+    /* Lock mutex. */
+    pj_mutex_lock(silk_factory.mutex);
+
+    /* Get the codec manager. */
+    codec_mgr = pjmedia_endpt_get_codec_mgr(silk_factory.endpt);
+    if (!codec_mgr) {
+	silk_factory.endpt = NULL;
+	pj_mutex_unlock(silk_factory.mutex);
+	return PJ_EINVALIDOP;
+    }
+
+    /* Unregister silk codec factory. */
+    status = pjmedia_codec_mgr_unregister_factory(codec_mgr,
+						  &silk_factory.base);
+    silk_factory.endpt = NULL;
+
+    /* Destroy mutex. */
+    pj_mutex_destroy(silk_factory.mutex);
+    silk_factory.mutex = NULL;
+
+
+    /* Release pool. */
+    pj_pool_release(silk_factory.pool);
+    silk_factory.pool = NULL;
+
+    return status;
+}
+
+
+/*
+ * Check if factory can allocate the specified codec.
+ */
+static pj_status_t silk_test_alloc(pjmedia_codec_factory *factory,
+				   const pjmedia_codec_info *info )
+{
+    const pj_str_t silk_tag = {"SILK", 4};
+    unsigned i;
+
+    PJ_UNUSED_ARG(factory);
+    PJ_ASSERT_RETURN(factory==&silk_factory.base, PJ_EINVAL);
+
+    /* Type MUST be audio. */
+    if (info->type != PJMEDIA_TYPE_AUDIO)
+	return PJMEDIA_CODEC_EUNSUP;
+
+    /* Check encoding name. */
+    if (pj_stricmp(&info->encoding_name, &silk_tag) != 0)
+	return PJMEDIA_CODEC_EUNSUP;
+
+    /* Channel count must be one */
+    if (info->channel_cnt != 1)
+	return PJMEDIA_CODEC_EUNSUP;
+
+    /* Check clock-rate */
+    for (i=0; i<PJ_ARRAY_SIZE(silk_factory.silk_param); ++i) {
+	silk_param *sp = &silk_factory.silk_param[i];
+	if (sp->enabled && info->clock_rate == sp->clock_rate)
+	{
+	    return PJ_SUCCESS;
+	}
+    }
+    /* Clock rate not supported */
+    return PJMEDIA_CODEC_EUNSUP;
+}
+
+
+/*
+ * Generate default attribute.
+ */
+static pj_status_t silk_default_attr( pjmedia_codec_factory *factory,
+				      const pjmedia_codec_info *id,
+				      pjmedia_codec_param *attr )
+{
+    silk_param *sp;
+    int i;
+    
+    PJ_ASSERT_RETURN(factory==&silk_factory.base, PJ_EINVAL);
+    
+    i = silk_get_mode_from_clock_rate(id->clock_rate);
+    pj_assert(i >= PARAM_NB && i <= PARAM_SWB);
+
+    sp = &silk_factory.silk_param[i];
+
+    pj_bzero(attr, sizeof(pjmedia_codec_param));
+    attr->info.channel_cnt = 1;
+    attr->info.clock_rate = sp->clock_rate;
+    attr->info.avg_bps = sp->bitrate;
+    attr->info.max_bps = sp->max_bitrate;
+    attr->info.frm_ptime = sp->ptime;
+    attr->info.pcm_bits_per_sample = 16;
+    attr->info.pt = (pj_uint8_t) sp->pt;
+    attr->setting.frm_per_pkt = 1;
+    attr->setting.vad = 0; /* DTX is not recommended for quality reason */
+    attr->setting.plc = 1;
+
+    i = 0;
+    attr->setting.dec_fmtp.param[i].name = pj_str("useinbandfec");
+    attr->setting.dec_fmtp.param[i++].val = pj_str("0");
+    /*
+    attr->setting.dec_fmtp.param[i].name = pj_str("maxaveragebitrate");
+    attr->setting.dec_fmtp.param[i++].val = pj_str(mode->bitrate_str);
+    */
+    attr->setting.dec_fmtp.cnt = (pj_uint8_t)i;
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Enum codecs supported by this factory.
+ */
+static pj_status_t silk_enum_codecs(pjmedia_codec_factory *factory,
+				    unsigned *count,
+				    pjmedia_codec_info codecs[])
+{
+    unsigned max;
+    int i;
+
+    PJ_ASSERT_RETURN(factory==&silk_factory.base, PJ_EINVAL);
+    PJ_ASSERT_RETURN(codecs && *count > 0, PJ_EINVAL);
+
+    max = *count;
+    *count = 0;
+
+    for (i = 0; i<PJ_ARRAY_SIZE(silk_factory.silk_param) && *count<max; ++i)
+    {
+	silk_param *sp = &silk_factory.silk_param[i];
+
+    	if (!sp->enabled)
+    	    continue;
+
+    	pj_bzero(&codecs[*count], sizeof(pjmedia_codec_info));
+    	codecs[*count].encoding_name = pj_str("SILK");
+    	codecs[*count].pt = sp->pt;
+    	codecs[*count].type = PJMEDIA_TYPE_AUDIO;
+    	codecs[*count].clock_rate = sp->clock_rate;
+    	codecs[*count].channel_cnt = 1;
+
+    	++*count;
+    }
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Allocate a new SILK codec instance.
+ */
+static pj_status_t silk_alloc_codec(pjmedia_codec_factory *factory,
+				    const pjmedia_codec_info *id,
+				    pjmedia_codec **p_codec)
+{
+    pj_pool_t *pool;
+    pjmedia_codec *codec;
+    silk_private *silk;
+
+    PJ_ASSERT_RETURN(factory && id && p_codec, PJ_EINVAL);
+    PJ_ASSERT_RETURN(factory == &silk_factory.base, PJ_EINVAL);
+
+    /* Create pool for codec instance */
+    pool = pjmedia_endpt_create_pool(silk_factory.endpt, "silk", 512, 512);
+
+    /* Allocate codec */
+    codec = PJ_POOL_ZALLOC_T(pool, pjmedia_codec);
+    codec->op = &silk_op;
+    codec->factory = factory;
+    codec->codec_data = PJ_POOL_ZALLOC_T(pool, silk_private);
+    silk = (silk_private*) codec->codec_data;
+    silk->pool = pool;
+    silk->enc_ready = PJ_FALSE;
+    silk->dec_ready = PJ_FALSE;
+    silk->mode = silk_get_mode_from_clock_rate(id->clock_rate);
+
+    *p_codec = codec;
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Free codec.
+ */
+static pj_status_t silk_dealloc_codec( pjmedia_codec_factory *factory,
+				      pjmedia_codec *codec )
+{
+    silk_private *silk;
+
+    PJ_ASSERT_RETURN(factory && codec, PJ_EINVAL);
+    PJ_ASSERT_RETURN(factory == &silk_factory.base, PJ_EINVAL);
+
+    silk = (silk_private*)codec->codec_data;
+
+    /* Close codec, if it's not closed. */
+    if (silk->enc_ready == PJ_TRUE || silk->dec_ready == PJ_TRUE) {
+    	silk_codec_close(codec);
+    }
+
+    pj_pool_release(silk->pool);
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Init codec.
+ */
+static pj_status_t silk_codec_init(pjmedia_codec *codec,
+				   pj_pool_t *pool )
+{
+    PJ_UNUSED_ARG(codec);
+    PJ_UNUSED_ARG(pool);
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Open codec.
+ */
+static pj_status_t silk_codec_open(pjmedia_codec *codec,
+				   pjmedia_codec_param *attr )
+{
+
+    silk_private *silk;
+    silk_param *sp;
+    SKP_int st_size, err;
+    pj_bool_t enc_use_fec;
+    unsigned enc_bitrate, i;
+
+    PJ_ASSERT_RETURN(codec && attr, PJ_EINVAL);
+
+    silk = (silk_private*)codec->codec_data;
+    sp = &silk_factory.silk_param[silk->mode];
+
+    /* Already opened? */
+    if (silk->enc_ready || silk->dec_ready)
+	return PJ_SUCCESS;
+
+    /* Allocate and initialize encoder */
+    err = SKP_Silk_SDK_Get_Encoder_Size(&st_size);
+    if (err) {
+        PJ_LOG(3,(THIS_FILE, "Failed to get encoder state size (err=%d)",
+		  err));
+	return PJMEDIA_CODEC_EFAILED;
+    }
+    silk->enc_st = pj_pool_zalloc(silk->pool, st_size);
+    err = SKP_Silk_SDK_InitEncoder(silk->enc_st, &silk->enc_ctl);
+    if (err) {
+        PJ_LOG(3,(THIS_FILE, "Failed to init encoder (err=%d)", err));
+	return PJMEDIA_CODEC_EFAILED;
+    }
+
+    /* Check fmtp params */
+    enc_use_fec = PJ_TRUE;
+    enc_bitrate = sp->bitrate;
+    for (i = 0; i < attr->setting.enc_fmtp.cnt; ++i) {
+	pjmedia_codec_fmtp *fmtp = &attr->setting.enc_fmtp;
+	const pj_str_t STR_USEINBANDFEC = {"useinbandfec", 12};
+	const pj_str_t STR_MAXAVERAGEBITRATE = {"maxaveragebitrate", 17};
+
+	if (!pj_stricmp(&fmtp->param[i].name, &STR_USEINBANDFEC)) {
+	    enc_use_fec = pj_strtoul(&fmtp->param[i].val) != 0;
+	} else if (!pj_stricmp(&fmtp->param[i].name, &STR_MAXAVERAGEBITRATE)) {
+	    enc_bitrate = pj_strtoul(&fmtp->param[i].val);
+	    if (enc_bitrate > sp->max_bitrate) {
+		enc_bitrate = sp->max_bitrate;
+	    }
+	}
+    }
+
+    /* Setup encoder control for encoding process */
+    silk->enc_ready = PJ_TRUE;
+    silk->samples_per_frame = FRAME_LENGTH_MS *
+			      attr->info.clock_rate / 1000;
+    silk->pcm_bytes_per_sample = attr->info.pcm_bits_per_sample / 8;
+
+    silk->enc_ctl.API_sampleRate        = attr->info.clock_rate;
+    silk->enc_ctl.maxInternalSampleRate = attr->info.clock_rate;
+    silk->enc_ctl.packetSize            = attr->setting.frm_per_pkt *
+                                          silk->samples_per_frame;
+    /* For useInBandFEC setting to be useful, we need to set
+     * packetLossPercentage greater than LBRR_LOSS_THRES (1)
+     */
+    silk->enc_ctl.packetLossPercentage  = SILK_ENC_CTL_PACKET_LOSS_PCT;
+    silk->enc_ctl.useInBandFEC          = enc_use_fec;
+    silk->enc_ctl.useDTX                = attr->setting.vad;
+    silk->enc_ctl.complexity            = sp->complexity;
+    silk->enc_ctl.bitRate               = enc_bitrate;
+    
+
+    /* Allocate and initialize decoder */
+    err = SKP_Silk_SDK_Get_Decoder_Size(&st_size);
+    if (err) {
+        PJ_LOG(3,(THIS_FILE, "Failed to get decoder state size (err=%d)",
+		  err));
+	return PJMEDIA_CODEC_EFAILED;
+    }
+    silk->dec_st = pj_pool_zalloc(silk->pool, st_size);
+    err = SKP_Silk_SDK_InitDecoder(silk->dec_st);
+    if (err) {
+        PJ_LOG(3,(THIS_FILE, "Failed to init decoder (err=%d)", err));
+	return PJMEDIA_CODEC_EFAILED;
+    }
+
+    /* Setup decoder control for decoding process */
+    silk->dec_ctl.API_sampleRate        = attr->info.clock_rate;
+    silk->dec_ctl.framesPerPacket	= 1; /* for proper PLC at start */
+    silk->dec_ready = PJ_TRUE;
+    silk->dec_buf_sz = attr->info.clock_rate * attr->info.channel_cnt *
+                       attr->info.frm_ptime / 1000 *
+                       silk->pcm_bytes_per_sample;
+
+    /* Inform the stream to prepare a larger buffer since we cannot parse
+     * SILK packets and split it into individual frames.
+     */
+    attr->info.max_rx_frame_size = attr->info.max_bps * 
+			           attr->info.frm_ptime / 8 / 1000;
+    if ((attr->info.max_bps * attr->info.frm_ptime) % 8000 != 0)
+    {
+	++attr->info.max_rx_frame_size;
+    }
+    attr->info.max_rx_frame_size *= SILK_MAX_FRAMES_PER_PACKET;
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Close codec.
+ */
+static pj_status_t silk_codec_close( pjmedia_codec *codec )
+{
+    silk_private *silk;
+    silk = (silk_private*)codec->codec_data;
+
+    silk->enc_ready = PJ_FALSE;
+    silk->dec_ready = PJ_FALSE;
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Modify codec settings.
+ */
+static pj_status_t  silk_codec_modify(pjmedia_codec *codec,
+				      const pjmedia_codec_param *attr )
+{
+    PJ_TODO(implement_silk_codec_modify);
+
+    PJ_UNUSED_ARG(codec);
+    PJ_UNUSED_ARG(attr);
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Encode frame.
+ */
+static pj_status_t silk_codec_encode(pjmedia_codec *codec,
+				     const struct pjmedia_frame *input,
+				     unsigned output_buf_len,
+				     struct pjmedia_frame *output)
+{
+    silk_private *silk;
+    SKP_int err;
+    unsigned nsamples;
+    SKP_int16 out_size;
+
+    PJ_ASSERT_RETURN(codec && input && output_buf_len && output, PJ_EINVAL);
+    silk = (silk_private*)codec->codec_data;
+
+    /* Check frame in size */
+    nsamples = input->size >> 1;
+    PJ_ASSERT_RETURN(nsamples % silk->samples_per_frame == 0,
+		     PJMEDIA_CODEC_EPCMFRMINLEN);
+
+    /* Encode */
+    output->size = 0;
+    out_size = (SKP_int16)output_buf_len;
+    err = SKP_Silk_SDK_Encode(silk->enc_st, &silk->enc_ctl,
+			     (SKP_int16*)input->buf, nsamples,
+			     (SKP_uint8*)output->buf, &out_size);
+    if (err) {
+	PJ_LOG(3, (THIS_FILE, "Failed to encode frame (err=%d)", err));
+	output->type = PJMEDIA_FRAME_TYPE_NONE;
+	if (err == SKP_SILK_ENC_PAYLOAD_BUF_TOO_SHORT)
+	    return PJMEDIA_CODEC_EFRMTOOSHORT;
+	return PJMEDIA_CODEC_EFAILED;
+    }
+
+    output->size = out_size;
+    output->type = PJMEDIA_FRAME_TYPE_AUDIO;
+    output->timestamp = input->timestamp;
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Get frames in the packet.
+ */
+static pj_status_t  silk_codec_parse( pjmedia_codec *codec,
+				     void *pkt,
+				     pj_size_t pkt_size,
+				     const pj_timestamp *ts,
+				     unsigned *frame_cnt,
+				     pjmedia_frame frames[])
+{
+    silk_private *silk;
+    SKP_Silk_TOC_struct toc;
+    unsigned i, count;
+
+    PJ_ASSERT_RETURN(codec && ts && frames && frame_cnt, PJ_EINVAL);
+    silk = (silk_private*)codec->codec_data;
+
+    SKP_Silk_SDK_get_TOC(pkt, pkt_size, &toc);
+    count = toc.framesInPacket;
+    pj_assert(count <= SILK_MAX_FRAMES_PER_PACKET);
+
+    for (i = 0; i < count; i++) {
+        frames[i].type = PJMEDIA_FRAME_TYPE_AUDIO;
+        frames[i].bit_info = (((unsigned)ts->u64 & 0xFFFF) << 16) |
+                              (((unsigned)pkt & 0xFF) << 8) |
+                              (toc.framesInPacket << 4) | i;
+        frames[i].buf = pkt;
+        frames[i].size = pkt_size;
+        frames[i].timestamp.u64 = ts->u64 + i * silk->samples_per_frame;
+    }
+
+    *frame_cnt = count;
+    return PJ_SUCCESS;
+}
+
+static pj_status_t silk_codec_decode(pjmedia_codec *codec,
+				     const struct pjmedia_frame *input,
+				     unsigned output_buf_len,
+				     struct pjmedia_frame *output)
+{
+    silk_private *silk;
+    SKP_int16 out_size;
+    SKP_Silk_TOC_struct toc;
+    SKP_int err = 0;
+    unsigned pkt_info, frm_info;
+
+    PJ_ASSERT_RETURN(codec && input && output_buf_len && output, PJ_EINVAL);
+    silk = (silk_private*)codec->codec_data;
+    PJ_ASSERT_RETURN(output_buf_len >= silk->dec_buf_sz, PJ_ETOOSMALL);
+
+    SKP_Silk_SDK_get_TOC(input->buf, input->size, &toc);
+    pkt_info = input->bit_info & 0xFFFFFF00;
+    frm_info = input->bit_info & 0xF;
+
+    if (toc.framesInPacket == 0) {
+        /* In SILK ARM version, the table of content can indicate
+         * that the number of frames in the packet is 0.
+         * Try to get the number of frames in packet that we save
+         * in the frame instead.
+         */
+        toc.framesInPacket = (input->bit_info & 0xF0) >> 4;
+    }
+    
+    if (toc.framesInPacket == 0) {
+        output->size = 0;
+    } else if (silk->pkt_info != pkt_info || input->bit_info == 0) {
+        unsigned i;
+        SKP_int16 nsamples;
+
+        silk->pkt_info = pkt_info;
+        nsamples = (SKP_int16)silk->dec_buf_sz / silk->pcm_bytes_per_sample;
+
+        if (toc.framesInPacket-1 > (SKP_int)silk->dec_buf_cnt) {
+            /* Grow the buffer */
+            for (i = silk->dec_buf_cnt+1; i < (unsigned)toc.framesInPacket;
+                i++)
+            {
+                silk->dec_buf[i-1] = pj_pool_alloc(silk->pool,
+                                                   silk->dec_buf_sz);
+            }
+            silk->dec_buf_cnt = toc.framesInPacket-1;
+        }
+
+        /* We need to decode all the frames in the packet. */
+        for (i = 0; i < (unsigned)toc.framesInPacket;) {
+            void *buf;
+            SKP_int16 *size;
+
+            if (i == 0 || i == frm_info) {
+                buf = output->buf;
+                size = &out_size;
+            } else {
+                buf = silk->dec_buf[i-1];
+                size = &silk->dec_buf_size[i-1];
+            }
+
+            *size = nsamples;
+            err = SKP_Silk_SDK_Decode(silk->dec_st, &silk->dec_ctl,
+			              0, /* Normal frame flag */
+			              input->buf, input->size,
+			              buf, size);
+            if (err) {
+	        PJ_LOG(3, (THIS_FILE, "Failed to decode frame (err=%d)",
+                                      err));
+                *size = 0;
+            } else {
+                *size = *size * silk->pcm_bytes_per_sample;
+            }
+
+            if (i == frm_info) {
+                output->size = *size;
+            }
+
+            i++;
+            if (!silk->dec_ctl.moreInternalDecoderFrames &&
+                i < (unsigned)toc.framesInPacket)
+            {
+                /* It turns out that the packet does not have
+                 * the number of frames as mentioned in the TOC.
+                 */
+                for (; i < (unsigned)toc.framesInPacket; i++) {
+                    silk->dec_buf_size[i-1] = 0;
+                    if (i == frm_info) {
+                        output->size = 0;
+                    }
+                }
+            }
+        }
+    } else {
+        /* We have already decoded this packet. */
+        if (frm_info == 0 || silk->dec_buf_size[frm_info-1] == 0) {
+            /* The decoding was a failure. */
+            output->size = 0;
+        } else {
+            /* Copy the decoded frame from the buffer. */
+            pj_assert(frm_info-1 < silk->dec_buf_cnt);
+            if (frm_info-1 >= silk->dec_buf_cnt) {
+                output->size = 0;
+            } else {
+                pj_memcpy(output->buf, silk->dec_buf[frm_info-1],
+                          silk->dec_buf_size[frm_info-1]);
+                output->size = silk->dec_buf_size[frm_info-1];
+            }
+        }
+    }
+
+    if (output->size == 0) {
+        output->type = PJMEDIA_TYPE_NONE;
+        output->buf = NULL;
+        return PJMEDIA_CODEC_EFAILED;
+    }
+
+    output->type = PJMEDIA_TYPE_AUDIO;
+    output->timestamp = input->timestamp;
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * Recover lost frame.
+ */
+static pj_status_t  silk_codec_recover(pjmedia_codec *codec,
+				       unsigned output_buf_len,
+				       struct pjmedia_frame *output)
+{
+    silk_private *silk;
+    SKP_int16 out_size;
+    SKP_int err;
+
+    PJ_ASSERT_RETURN(codec && output_buf_len && output, PJ_EINVAL);
+    silk = (silk_private*)codec->codec_data;
+
+    out_size = (SKP_int16)output_buf_len / silk->pcm_bytes_per_sample;
+    err = SKP_Silk_SDK_Decode(silk->dec_st, &silk->dec_ctl,
+			      1, /* Lost frame flag */
+			      NULL,
+			      0,
+			      output->buf,
+			      &out_size);
+    if (err) {
+	PJ_LOG(3, (THIS_FILE, "Failed to conceal lost frame (err=%d)", err));
+	output->type = PJMEDIA_FRAME_TYPE_NONE;
+	output->buf = NULL;
+	output->size = 0;
+	return PJMEDIA_CODEC_EFAILED;
+    }
+
+    output->size = out_size * silk->pcm_bytes_per_sample;
+    output->type = PJMEDIA_FRAME_TYPE_AUDIO;
+
+    return PJ_SUCCESS;
+}
+
+#if defined(_MSC_VER)
+#  if PJ_DEBUG
+#   pragma comment(lib, "SKP_Silk_FLP_Win32_debug.lib")
+#  else
+#   pragma comment(lib, "SKP_Silk_FLP_Win32_mt.lib")
+#  endif
+#endif
+
+
+#endif /* PJMEDIA_HAS_SILK_CODEC */