* #27232: jni: added pjproject checkout as regular git content
We will remove it once the next release of pjsip (with Android support)
comes out and is merged into SFLphone.
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 */