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[core, mod_opus] more elastic jitterbuffer with Opus codec (#2069)

This commit is contained in:
Julien Chavanton 2023-06-23 09:45:31 -04:00 committed by GitHub
parent f64314ff48
commit 67840823c1
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GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 756 additions and 3 deletions
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53
scripts/lua/hangup_jitterbuffer_metrics.lua Executable file
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@ -0,0 +1,53 @@
local https = require("socket.http")
local ip = os.getenv("LOCAL_IPV4")
local response_body = {}
-- jitter buffer stats
local size_max_ms = session:getVariable("rtp_jb_size_max_ms");
local size_est_ms = session:getVariable("rtp_jb_size_est_ms");
local acceleration_ms = session:getVariable("rtp_jb_acceleration_ms");
local expand_ms = session:getVariable("rtp_jb_expand_ms");
local jitter_max_ms = session:getVariable("rtp_jb_jitter_max_ms");
local jitter_est_ms = session:getVariable("rtp_jb_jitter_est_ms");
local reset_count = session:getVariable("rtp_jb_reset_count");
local reset_too_big = session:getVariable("rtp_jb_reset_too_big");
local reset_missing_frames = session:getVariable("rtp_jb_reset_missing_frames");
local reset_ts_jump = session:getVariable("rtp_jb_reset_ts_jump");
local reset_error = session:getVariable("rtp_jb_reset_error");
local call_id = session:getVariable("sip_call_id");
local out_call_id = session:getVariable("last_bridge_to");
if size_max_ms == nil or size_est_ms == nil or acceleration_ms == nil or expand_ms == nil or jitter_max_ms == nil or jitter_est_ms == nil then
session:consoleLog("info", "[metrics] jitter no data\n");
return
end
local request_body = '{"in_call_id": "'..call_id..'", "out_call_id": "'..out_call_id..'", "jb":{"size_max_ms":'..size_max_ms..
',"size_est_ms":'..size_est_ms..',"acceleration_ms":'..acceleration_ms..',"expand_ms":'..expand_ms..
',"jitter_max_ms":'..jitter_max_ms..',"jitter_est_ms":'..jitter_est_ms..',"reset":'..reset_count
-- if reset_too_big ~= "0" then
request_body = request_body .. ',"reset_too_big":'..reset_too_big
-- end
if reset_missing_frames ~= "0" then
request_body = request_body .. ',"reset_missing_frames":'..reset_missing_frames
end
if reset_ts_jump ~= "0" then
request_body = request_body .. ',"reset_ts_jump":'..reset_ts_jump
end
if reset_error ~= "0" then
request_body = request_body .. ',"reset_error":'..reset_error
end
local v = request_body .. '}}';
local r, c, h, s = https.request{
method = 'POST',
url = "http://"..ip..":80/freeswitch_metrics",
headers = {
["Content-Type"] = "application/json",
["Content-Length"] = string.len(v)
},
source = ltn12.source.string(v),
sink = ltn12.sink.table(response_body)
}
-- print('statusCode ', c)
session:consoleLog("info", "[metrics] jitter:".. v .. "\n");

1
src/include/switch_jitterbuffer.h
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@ -61,6 +61,7 @@ SWITCH_DECLARE(switch_status_t) switch_jb_get_packet(switch_jb_t *jb, switch_rtp
SWITCH_DECLARE(uint32_t) switch_jb_pop_nack(switch_jb_t *jb); SWITCH_DECLARE(uint32_t) switch_jb_pop_nack(switch_jb_t *jb);
SWITCH_DECLARE(switch_status_t) switch_jb_get_packet_by_seq(switch_jb_t *jb, uint16_t seq, switch_rtp_packet_t *packet, switch_size_t *len); SWITCH_DECLARE(switch_status_t) switch_jb_get_packet_by_seq(switch_jb_t *jb, uint16_t seq, switch_rtp_packet_t *packet, switch_size_t *len);
SWITCH_DECLARE(void) switch_jb_set_session(switch_jb_t *jb, switch_core_session_t *session); SWITCH_DECLARE(void) switch_jb_set_session(switch_jb_t *jb, switch_core_session_t *session);
SWITCH_DECLARE(void) switch_jb_set_jitter_estimator(switch_jb_t *jb, double *jitter, uint32_t samples_per_frame, uint32_t samples_per_second);
SWITCH_DECLARE(void) switch_jb_ts_mode(switch_jb_t *jb, uint32_t samples_per_frame, uint32_t samples_per_second); SWITCH_DECLARE(void) switch_jb_ts_mode(switch_jb_t *jb, uint32_t samples_per_frame, uint32_t samples_per_second);
SWITCH_DECLARE(void) switch_jb_set_flag(switch_jb_t *jb, switch_jb_flag_t flag); SWITCH_DECLARE(void) switch_jb_set_flag(switch_jb_t *jb, switch_jb_flag_t flag);
SWITCH_DECLARE(void) switch_jb_clear_flag(switch_jb_t *jb, switch_jb_flag_t flag); SWITCH_DECLARE(void) switch_jb_clear_flag(switch_jb_t *jb, switch_jb_flag_t flag);

1
src/include/switch_types.h
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@ -2425,6 +2425,7 @@ typedef enum {
SCC_VIDEO_RESET, SCC_VIDEO_RESET,
SCC_AUDIO_PACKET_LOSS, SCC_AUDIO_PACKET_LOSS,
SCC_AUDIO_ADJUST_BITRATE, SCC_AUDIO_ADJUST_BITRATE,
SCC_AUDIO_VAD,
SCC_DEBUG, SCC_DEBUG,
SCC_CODEC_SPECIFIC SCC_CODEC_SPECIFIC
} switch_codec_control_command_t; } switch_codec_control_command_t;

2
src/mod/codecs/mod_opus/Makefile.am
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@ -4,7 +4,7 @@ MODNAME=mod_opus
if HAVE_OPUS if HAVE_OPUS
mod_LTLIBRARIES = mod_opus.la mod_LTLIBRARIES = mod_opus.la
mod_opus_la_SOURCES = mod_opus.c mod_opus_la_SOURCES = mod_opus.c opus_parse.c
mod_opus_la_CFLAGS = $(AM_CFLAGS) $(OPUS_CFLAGS) mod_opus_la_CFLAGS = $(AM_CFLAGS) $(OPUS_CFLAGS)
mod_opus_la_LIBADD = $(switch_builddir)/libfreeswitch.la $(OPUS_LIBS) mod_opus_la_LIBADD = $(switch_builddir)/libfreeswitch.la $(OPUS_LIBS)
mod_opus_la_LDFLAGS = -avoid-version -module -no-undefined -shared -lm -lz mod_opus_la_LDFLAGS = -avoid-version -module -no-undefined -shared -lm -lz

30
src/mod/codecs/mod_opus/mod_opus.c
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@ -33,6 +33,7 @@
#include "switch.h" #include "switch.h"
#include "opus.h" #include "opus.h"
#include "opus_parse.h"
#define SWITCH_OPUS_MIN_BITRATE 6000 #define SWITCH_OPUS_MIN_BITRATE 6000
#define SWITCH_OPUS_MAX_BITRATE 510000 #define SWITCH_OPUS_MAX_BITRATE 510000
@ -1169,6 +1170,27 @@ static switch_status_t switch_opus_keep_fec_enabled(switch_codec_t *codec)
} }
} }
static switch_bool_t switch_opus_vad(struct opus_context *context, void *encoded_data, uint32_t encoded_data_len) {
const uint8_t *payload = (const uint8_t *) encoded_data;
opus_packet_info_t opus_packet_info;
switch_bool_t debug = (globals.debug || context->debug > 1);
if (!switch_opus_packet_parse(payload, encoded_data_len, &opus_packet_info, debug)) {
if (debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "OPUS PACKET PARSING ERROR len:%d bytes:%02x %02x\n",
(int)encoded_data_len, payload[0], payload[1]);
}
return SWITCH_TRUE;
}
if (debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "OPUS EXTRACT PAYLOAD VAD len:%d vad_ms:%d bytes:%02x %02x\n",
(int)encoded_data_len, opus_packet_info.vad_ms, payload[0], payload[1]);
}
if (opus_packet_info.vad_ms == 0) {
return SWITCH_FALSE;
}
return SWITCH_TRUE;
}
static switch_status_t switch_opus_control(switch_codec_t *codec, static switch_status_t switch_opus_control(switch_codec_t *codec,
switch_codec_control_command_t cmd, switch_codec_control_command_t cmd,
switch_codec_control_type_t ctype, switch_codec_control_type_t ctype,
@ -1260,6 +1282,14 @@ static switch_status_t switch_opus_control(switch_codec_t *codec,
context->old_plpct = plpct; context->old_plpct = plpct;
} }
break; break;
case SCC_AUDIO_VAD:
{
void* encoded_data = (void *)cmd_data;
uint16_t* encoded_data_len = (uint16_t *)cmd_arg;
switch_bool_t *ret = (switch_bool_t *) *ret_data;
*ret = switch_opus_vad(context, encoded_data, *encoded_data_len);
}
break;
case SCC_AUDIO_ADJUST_BITRATE: case SCC_AUDIO_ADJUST_BITRATE:
{ {
const char *cmd = (const char *)cmd_data; const char *cmd = (const char *)cmd_data;

366
src/mod/codecs/mod_opus/opus_parse.c Normal file
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@ -0,0 +1,366 @@
/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2023, 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):
*
* Claude Lamblin
* Julien Chavanton <jchavanton@gmail.com>
*
*/
#include "switch.h"
#include <opus/opus.h>
#include "opus_parse.h"
/* Tables for LBRR_sympbol decoding */
static const opus_int16 silk_LBRR_flags_2_PDFCum[3] = {53, 106, 256}; /* 256 - silk_LBRR_flags_2_iCDF[i] ; silk_LBRR_flags_2_iCDF[ 3 ] = { 203, 150, 0 }; */
static const opus_int16 silk_LBRR_flags_3_PDFCum[7] = {41, 61, 90, 131, 146, 174, 256}; /* 256 - silk_LBRR_flags_3_iCDF[i] ; silk_LBRR_flags_3_iCDF[ 7 ] = { 215, 195, 166, 125, 110, 82, 0 }; */
/* get the number of VAD flags - i.e. number of 20 ms frame - from the config */
/* in a silk-only or hybrid opus frame mono or stereo*/
/* 5 MSB TOC byte (see table 2 of IETF RFC6716 clause 3.1) */
/* if 10 ms frame (config=0, 4, 8, 12, 14) : return 1 */
/* if CELT_only frame no VAD flag =>return 0 */
static opus_int16 switch_opus_get_nb_flags_in_silk_frame(int16_t config)
{
opus_int16 silk_frame_nb_flags;
if (config > 15) {
/* CELT_only frame no VAD flag nor LBRR flag */
silk_frame_nb_flags = 0;
} else {
silk_frame_nb_flags = 1; /*default*/
if (config < 12) {
/* silk-only NB, MB or WB */
/* The least two significant bits give the number of VAD flags inside the silk frame 1, 2 or 3 */
silk_frame_nb_flags = config & 0x3;
if (silk_frame_nb_flags == 0) { /* 0 => 10ms frame : one VAD flag */
silk_frame_nb_flags++;
}
}
}
return silk_frame_nb_flags;
}
/* get the time in ms corresponding to one VAD flag from the config */
/* in a silk-only or hybrid opus frame mono or stereo*/
/* 5 MSB TOC byte (see table 2 of IETF RFC6716 clause 3.1) */
/* if CELT_only frame (config >15) no VAD flag =>return FALSE */
/* if 10 ms frame (config=0, 4, 8, 12, 14) : return 10 */
/* otherwise return 20 */
static opus_int16 switch_opus_get_silk_frame_ms_per_flag(int16_t config, opus_int16 silk_frame_nb_flags)
{
opus_int16 silk_size_frame_ms_per_flag;
if (config > 15) {
/* CELT_only frame no VAD flag nor LBRR flag */
/* switch_opus_get_silk_frame_ms_per_flag: code not written for CELT-only mode */
return FALSE;
}
silk_size_frame_ms_per_flag = 20; /* default*/
if (silk_frame_nb_flags == 1) { /* could be 10 or 20 ms */
if ((config &0x01) == 0) {
silk_size_frame_ms_per_flag = 10;
}
}
return silk_size_frame_ms_per_flag;
}
/* code written only for mono, silk-only or hybrid mode */
/* for CELT-only frame no vad flags for LBRR flag the routine must not be called */
/* for stereo : the mid frame VAD_flags and the LBRR_flag could be obtained */
/* yet, to get the LBRR_flags of the mid frame the routine should be modified */
/* to skip the side VAD flags and the side LBRR flag and to get the mid LBRR_symbol */
static bool_t switch_opus_get_VAD_LBRR_flags(const uint8_t *buf, opus_int16 silk_frame_nb_flags,
opus_int16 *VAD_flags, opus_int16 *LBRR_flags, opus_int16 *nb_VAD1, opus_int16 *nb_FEC)
{
const opus_int16 *ptr_pdf_cum;
opus_int nb_pdf_symbol;
opus_uint16 LBRR_symbol;
opus_int16 val, nb_bit, compl_nb_bit, mask, mask2;
opus_int16 *ptr_flags;
opus_int16 LBRR_flag;
opus_int16 nb_vad, nb_fec;
int i;
nb_vad = 0;
nb_fec = 0;
/* get VAD_FLAGS & LBRR_FLAG */
/* silk_frame_nb_flags = 1 (10 or 20 ms), the two MSB of the first byte are the VAD flag and the LBRR flag */
/* silk_frame_nb_flags = 2 (40 ms), the three MSB of the first byte are the two VAD flags and the LBRR flag */
/* silk_frame_nb_flags = 3 (60 ms), the four MSB of the first byte are the three VAD flags and the LBRR flag */
/* compute the number of MSB to analyse */
nb_bit = silk_frame_nb_flags + 1;
/* number of right shifts to appply to the first byte to only have the bits of LBRR flag and of the VAD flags */
compl_nb_bit = 8 - nb_bit;
mask = (1 << nb_bit) - 1;
/* the bits of the silk_frame_nb_flags VAD flags and the LBRR flag are the MSB of the first byte */
/* silk_frame_nb_flags = 1 (10 or 20 ms), VAD_flags(0) | LBRR_flag */
/* silk_frame_nb_flags = 2 (40 ms), VAD_flags(0) | VAD_flags(1) | LBRR_flag */
/* silk_frame_nb_flags = 3 (60 ms), VAD_flags(0) | VAD_flags(1) | VAD_flags(2) |LBRR_flag */
val = (buf[0] >> compl_nb_bit) & mask;
LBRR_flag = val & 0x1; /* LBRR_FLAG LSB */
/* get VAD_flags */
ptr_flags = VAD_flags + silk_frame_nb_flags;
for (i=0; i < silk_frame_nb_flags; i++) {
LBRR_flags[i] = 0; /* init */
val >>= 1;
*(--ptr_flags) = val & 0x1;
}
if (LBRR_flag != 0) { /* there is at least one LBRR frame */
if (silk_frame_nb_flags == 1) {
LBRR_flags[0] = 1;
nb_fec = 1;
} else { /* get LBRR_symbol then LBRR_flags */
/* LBRR symbol is encoded with range encoder : range on 8 bits */
/* silk_frame_nb_flags = 2 ; 3 possible values for LBRR_flags(1) | LBRR_flags(0))= 01, 10, 11 */
/* silk_frame_nb_flags = 3 ; 7 possible values for LBRR_flags(2) | LBRR_flags(1) | LBRR_flags(0))= 001, 010, 011, 100, 101, 110, 111 */
mask2 = (1 << compl_nb_bit) - 1;
/* get next 8 bits: (8-nb_bit) LSB of the first byte and nb_bit MSB of the second byte */
val = (((buf[0]) & mask2) << nb_bit) | ((buf[1] >> compl_nb_bit) & mask);
if (silk_frame_nb_flags == 2) {
nb_pdf_symbol = 3;
ptr_pdf_cum = silk_LBRR_flags_2_PDFCum;
} else {
nb_pdf_symbol = 7;
ptr_pdf_cum = silk_LBRR_flags_3_PDFCum;
}
LBRR_symbol = 0;
for (i = 1; i <= nb_pdf_symbol; i++) {
if (val < *ptr_pdf_cum++) {
LBRR_symbol = i;
break;
}
}
for (i = 0; i < silk_frame_nb_flags; i++) {
LBRR_flags[i] = LBRR_symbol & 0x01;
LBRR_symbol >>= 1;
nb_fec += LBRR_flags[i];
}
}
}
for (i = 0; i < silk_frame_nb_flags; i++) {
nb_vad += VAD_flags[i];
}
*nb_VAD1 = nb_vad;
*nb_FEC = nb_fec;
return TRUE;
}
/* Parse the packet to retrieve informations about its content
* RFC6716: Definition of the Opus Audio Codec
* return: FALSE if there was a problem found parsing the packet, the info returned should be ignored.
* */
bool_t switch_opus_packet_parse(const uint8_t *payload, int payload_length_bytes, opus_packet_info_t *packet_info, bool_t debug)
{
int f;
int32_t samplerate;
int i, shift_silk, silk_frame_packet;
int16_t vad_flags_per_silk_frame, fec_flags_per_silk_frame;
opus_int16 frame_sizes[48];
const unsigned char *frame_data[48];
opus_int16 packet_LBBR_FLAGS[3 * 48], packet_VAD_FLAGS[3 * 48];
opus_int16 *ptr_LBBR_FLAGS, *ptr_VAD_FLAGS;
opus_int16 silk_frame_nb_flags, silk_size_frame_ms_per_flag;
opus_int16 silk_frame_nb_fec, silk_frame_nb_vad1;
opus_int sample_per_frame;
packet_info->config = 0;
packet_info->fec = 0;
packet_info->fec_ms = 0;
packet_info->vad = 0;
packet_info->vad_ms = 0;
packet_info->stereo = FALSE;
packet_info->frames = 0;
packet_info->channels = 1; /* as stereo is set to FALSE */
packet_info->ms_per_frame = 0;
packet_info->ptime_ts = 0;
if (payload == NULL || payload_length_bytes <= 0) {
if (debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "opus_packet_parse: payload null.");
}
return FALSE;
}
/* In CELT_ONLY mode, packets should not have FEC. */
if (payload[0] & 0x80) {
/* opus_packet_parse: CELT_ONLY mode, we do not support this mode. */
return FALSE;
} else {
int mode = (payload[0] >> 3);
if (mode <= 3) {
samplerate = 8000;
} else if (mode <= 7) {
samplerate = 12000;
} else if (mode <= 11) {
samplerate = 16000;
} else if (mode <= 13) {
samplerate = 24000;
} else if (mode <= 15) {
samplerate = 48000;
} else {
/* opus_packet_parse: CELT_ONLY mode, we do not support this mode. */
return FALSE;
}
if (debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "opus_packet_parse: mode[%d]s[%d]c[%d] [%d]Hz\n", mode, (payload[0]>>2)&0x1 ,(payload[0])&0x3, samplerate);
}
}
if (payload[0] & 0x04) {
packet_info->stereo = TRUE;
packet_info->channels = 2;
}
packet_info->config = payload[0] >> 3;
sample_per_frame = opus_packet_get_samples_per_frame(payload, samplerate);
packet_info->ms_per_frame = sample_per_frame * 1000 / samplerate;
if (packet_info->ms_per_frame < 10 || packet_info->ms_per_frame > 120) {
if (debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "opus_packet_parse: invalid packet.");
}
return FALSE;
}
packet_info->frames = opus_packet_parse(payload, payload_length_bytes, NULL, frame_data, frame_sizes, NULL);
if (packet_info->frames < 0) {
packet_info->frames = 0;
if (debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "opus_packet_parse: opus_packet_parse found no frame.\n");
}
return FALSE;
}
packet_info->ptime_ts = packet_info->frames * sample_per_frame;
if (frame_sizes[0] <= 1) {
if (debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "opus_packet_parse: opus_packet_parse frame size too small.\n");
}
return FALSE;
}
/* +---------------+-----------+-----------+-------------------+ */
/* | Configuration | Mode | Bandwidth | Frame Sizes | */
/* | Number(s) | | | | */
/* +---------------+-----------+-----------+-------------------+ */
/* | 0...3 | SILK-only | NB | 10, 20, 40, 60 ms | */
/* | 4...7 | SILK-only | MB | 10, 20, 40, 60 ms | */
/* | 8...11 | SILK-only | WB | 10, 20, 40, 60 ms | */
/* | 12...13 | Hybrid | SWB | 10, 20 ms | */
/* | 14...15 | Hybrid | FB | 10, 20 ms | */
/* | 16...19 | CELT-only | NB | 2.5, 5, 10, 20 ms | */
/* | 20...23 | CELT-only | WB | 2.5, 5, 10, 20 ms | */
/* | 24...27 | CELT-only | SWB | 2.5, 5, 10, 20 ms | */
/* | 28...31 | CELT-only | FB | 2.5, 5, 10, 20 ms | */
/* +---------------+-----------+-----------+-------------------+ */
if (!packet_info->stereo) {
/* the routines opus_get_nb_flags_in_silk_frame and opus_get_silk_frame_ms_per_flag are also valid for stereo frames */
/* yet the routine opus_get_VAD_LBRR_flags is currently only for mono frame*/
silk_frame_nb_flags = switch_opus_get_nb_flags_in_silk_frame(packet_info->config); /* =1 for 10 or 20 ms frame; = 2 for 40 ms; = 3 for 60 ms */
if (!silk_frame_nb_flags) {
/* We should not go there as CELT_ONLY is already tested above */
return FALSE;
}
packet_info->frames_silk = silk_frame_nb_flags;
silk_size_frame_ms_per_flag = switch_opus_get_silk_frame_ms_per_flag(packet_info->config, silk_frame_nb_flags); /* 10 or 20 ms frame*/
if (!silk_size_frame_ms_per_flag) {
/* we should not go there as CELT_ONLY is already tested above */
return FALSE;
}
ptr_LBBR_FLAGS = packet_LBBR_FLAGS;
ptr_VAD_FLAGS = packet_VAD_FLAGS;
for (f = 0; f < packet_info->frames; f++) {
switch_opus_get_VAD_LBRR_flags(frame_data[f], silk_frame_nb_flags, ptr_VAD_FLAGS, ptr_LBBR_FLAGS,
&silk_frame_nb_vad1, &silk_frame_nb_fec);
packet_info->vad += silk_frame_nb_vad1;
packet_info->fec += silk_frame_nb_fec;
packet_info->vad_ms += silk_frame_nb_vad1 * silk_size_frame_ms_per_flag;
packet_info->fec_ms += silk_frame_nb_fec * silk_size_frame_ms_per_flag;
ptr_VAD_FLAGS += silk_frame_nb_flags;
ptr_LBBR_FLAGS += silk_frame_nb_flags;
}
/* store the VAD & LBRR flags of all 20 ms silk-frames of the packet; LSB the first frame, MSB: the last */
vad_flags_per_silk_frame = 0;
fec_flags_per_silk_frame = 0;
silk_frame_packet = packet_info->frames * packet_info->frames_silk;
if (silk_frame_packet > 15) {
if (debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "opus_packet_parse: more than %d 20-ms frames in the packet ; only first 15 silk-frames data will be stored (pb silkFastAccelerate)\n", silk_frame_packet);
}
silk_frame_packet = 15;
}
ptr_LBBR_FLAGS = packet_LBBR_FLAGS;
ptr_VAD_FLAGS = packet_VAD_FLAGS;
shift_silk = 0;
for (i=0; i < silk_frame_packet; i++) {
vad_flags_per_silk_frame += (*ptr_VAD_FLAGS) << shift_silk;
fec_flags_per_silk_frame += (*ptr_LBBR_FLAGS) << shift_silk;
shift_silk++;
ptr_LBBR_FLAGS++; ptr_VAD_FLAGS++;
}
packet_info->vad_flags_per_silk_frame = vad_flags_per_silk_frame;
packet_info->fec_flags_per_silk_frame = fec_flags_per_silk_frame;
return TRUE;
}
if (packet_info->config != 1 && packet_info->config != 5 && packet_info->config != 9) {
if (debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "opus_packet_parse: the current parser implementation does not support muliple SILK frames for VAD or FEC detection.\n");
}
return FALSE;
}
/*
* Parse the VAD and LBRR flags in each Opus frame
* */
for (f = 0; f < packet_info->frames; f++) {
if (frame_data[f][0] & 0x80) {
packet_info->vad++;
}
if (frame_data[f][0] & 0x40) {
packet_info->fec++;
}
if (debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "opus_packet_parse: LP layer opus_frame[%d] VAD[%d] FEC[%d]\n", f+1, (frame_data[f][0]&0x80)>>7, (frame_data[f][0]&0x40)>>6);
}
}
packet_info->vad_ms = packet_info->vad * packet_info->ms_per_frame;
packet_info->fec_ms = packet_info->fec * packet_info->ms_per_frame;
return TRUE;
}
/* 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:
*/

66
src/mod/codecs/mod_opus/opus_parse.h Normal file
View File

@ -0,0 +1,66 @@
/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2023, 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):
*
* Julien Chavanton <jchavanton@gmail.com>
*
*/
#ifndef SWITCH_OPUS_PARSE_H
#define SWITCH_OPUS_PARSE_H
typedef enum { false, true } bool_t;
typedef struct opus_packet_info {
int16_t vad;
int16_t vad_ms;
int16_t fec;
int16_t fec_ms;
bool_t stereo;
int16_t frames; /* number of opus frames in the packet */
int16_t config;
int16_t channels;
int16_t ms_per_frame;
int32_t ptime_ts;
bool_t valid;
int16_t frames_silk; /* number of silk_frames in an opus frame */
/* VAD flag of all 20 ms silk-frames of the packet; LSB the first frame, MSB: the last */
int16_t vad_flags_per_silk_frame;
/* LBRR (FEC) flag of all 20 ms silk-frames of the packet; LSB the first frame, MSB: the last */
int16_t fec_flags_per_silk_frame;
} opus_packet_info_t;
bool_t switch_opus_packet_parse(const uint8_t *payload, int payload_length_bytes, opus_packet_info_t *packet_info, bool_t debug);
#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:
*/

239
src/switch_jitterbuffer.c
View File

@ -44,6 +44,8 @@
struct switch_jb_s; struct switch_jb_s;
static inline int check_jb_size(switch_jb_t *jb);
typedef struct switch_jb_node_s { typedef struct switch_jb_node_s {
struct switch_jb_s *parent; struct switch_jb_s *parent;
switch_rtp_packet_t packet; switch_rtp_packet_t packet;
@ -56,6 +58,29 @@ typedef struct switch_jb_node_s {
switch_bool_t complete_frame_mark; switch_bool_t complete_frame_mark;
} switch_jb_node_t; } switch_jb_node_t;
typedef struct switch_jb_stats_s {
uint32_t reset_too_big;
uint32_t reset_missing_frames;
uint32_t reset_ts_jump;
uint32_t reset_error;
uint32_t reset;
uint32_t size_max;
uint32_t size_est;
uint32_t acceleration;
uint32_t expand;
uint32_t jitter_max_ms;
int estimate_ms;
int buffer_size_ms;
} switch_jb_stats_t;
typedef struct switch_jb_jitter_s {
double *estimate;
uint32_t samples_per_second;
uint32_t samples_per_frame;
uint32_t drop_gap;
switch_jb_stats_t stats;
} switch_jb_jitter_t;
struct switch_jb_s { struct switch_jb_s {
struct switch_jb_node_s *node_list; struct switch_jb_node_s *node_list;
uint32_t last_target_seq; uint32_t last_target_seq;
@ -104,6 +129,7 @@ struct switch_jb_s {
switch_jb_flag_t flags; switch_jb_flag_t flags;
switch_jb_type_t type; switch_jb_type_t type;
switch_core_session_t *session; switch_core_session_t *session;
switch_jb_jitter_t jitter;
switch_channel_t *channel; switch_channel_t *channel;
uint32_t buffer_lag; uint32_t buffer_lag;
uint32_t flush; uint32_t flush;
@ -112,6 +138,8 @@ struct switch_jb_s {
uint32_t period_len; uint32_t period_len;
uint32_t nack_saved_the_day; uint32_t nack_saved_the_day;
uint32_t nack_didnt_save_the_day; uint32_t nack_didnt_save_the_day;
switch_bool_t elastic;
switch_codec_t *codec;
}; };
@ -233,6 +261,7 @@ static inline switch_jb_node_t *new_node(switch_jb_t *jb)
if (jb->allocated_nodes > jb->max_frame_len * mult) { if (jb->allocated_nodes > jb->max_frame_len * mult) {
jb_debug(jb, 2, "ALLOCATED FRAMES TOO HIGH! %d\n", jb->allocated_nodes); jb_debug(jb, 2, "ALLOCATED FRAMES TOO HIGH! %d\n", jb->allocated_nodes);
jb->jitter.stats.reset_too_big++;
switch_jb_reset(jb); switch_jb_reset(jb);
switch_mutex_unlock(jb->list_mutex); switch_mutex_unlock(jb->list_mutex);
return NULL; return NULL;
@ -332,6 +361,29 @@ static inline void hide_nodes(switch_jb_t *jb)
switch_mutex_unlock(jb->list_mutex); switch_mutex_unlock(jb->list_mutex);
} }
static inline switch_bool_t packet_vad(switch_jb_t *jb, switch_rtp_packet_t *packet, switch_size_t len) {
void* payload;
uint16_t payload_len = len;
if (packet->ebody) {
payload = packet->ebody;
} else {
payload = packet->body;
}
if (payload && payload_len > 0) {
switch_bool_t ret;
switch_bool_t *ret_p = &ret;
switch_codec_control_type_t ret_t;
switch_core_media_codec_control(jb->session, SWITCH_MEDIA_TYPE_AUDIO,
SWITCH_IO_WRITE, SCC_AUDIO_VAD,
SCCT_STRING, (void *)payload,
SCCT_INT, (void *)&payload_len,
&ret_t, (void *)&ret_p);
return ret;
}
return SWITCH_TRUE;
}
static inline void drop_ts(switch_jb_t *jb, uint32_t ts) static inline void drop_ts(switch_jb_t *jb, uint32_t ts)
{ {
switch_jb_node_t *np; switch_jb_node_t *np;
@ -667,6 +719,7 @@ static inline void add_node(switch_jb_t *jb, switch_rtp_packet_t *packet, switch
if (((seq_diff >= 100) || (ts_diff > (900000 * 5)))) { if (((seq_diff >= 100) || (ts_diff > (900000 * 5)))) {
jb_debug(jb, 2, "CHANGE DETECTED, PUNT %u\n", abs(((int)ntohs(packet->header.seq) - ntohs(jb->highest_wrote_seq)))); jb_debug(jb, 2, "CHANGE DETECTED, PUNT %u\n", abs(((int)ntohs(packet->header.seq) - ntohs(jb->highest_wrote_seq))));
jb->jitter.stats.reset_ts_jump++;
switch_jb_reset(jb); switch_jb_reset(jb);
} }
} }
@ -732,6 +785,12 @@ static inline void increment_seq(switch_jb_t *jb)
jb->target_seq = htons((ntohs(jb->target_seq) + 1)); jb->target_seq = htons((ntohs(jb->target_seq) + 1));
} }
static inline void decrement_seq(switch_jb_t *jb)
{
jb->last_target_seq = jb->target_seq;
jb->target_seq = htons((ntohs(jb->target_seq) - 1));
}
static inline void set_read_seq(switch_jb_t *jb, uint16_t seq) static inline void set_read_seq(switch_jb_t *jb, uint16_t seq)
{ {
jb->last_target_seq = seq; jb->last_target_seq = seq;
@ -854,12 +913,128 @@ static inline switch_status_t jb_next_packet_by_ts(switch_jb_t *jb, switch_jb_no
} }
static inline int check_jb_size(switch_jb_t *jb)
{
switch_jb_node_t *np;
uint16_t seq;
uint16_t l_seq=0;
uint16_t h_seq=0;
uint16_t count=0;
uint16_t old=0;
switch_mutex_lock(jb->list_mutex);
for (np = jb->node_list; np; np = np->next) {
if (!np->visible) {
continue;
}
seq = ntohs(np->packet.header.seq);
if (ntohs(jb->target_seq) > seq) {
hide_node(np, SWITCH_FALSE);
old++;
continue;
}
if (count == 0) {
l_seq = h_seq = seq;
}
count++;
if (seq < l_seq)
l_seq = seq;
if (seq > h_seq)
h_seq = seq;
}
if (count > jb->jitter.stats.size_max) {
jb->jitter.stats.size_max = count;
}
if (jb->jitter.stats.size_est == 0) {
jb->jitter.stats.size_est = count;
} else {
jb->jitter.stats.size_est = ((99*jb->jitter.stats.size_est)+(1*count))/100;
}
if (ntohs(jb->target_seq) % 50 == 0) { /* update the stats every x packets */
int packet_ms = jb->jitter.samples_per_frame / (jb->jitter.samples_per_second / 1000);
jb->jitter.stats.estimate_ms = (*jb->jitter.estimate) / jb->jitter.samples_per_second * 1000;
switch_channel_set_variable_printf(jb->channel, "rtp_jb_size_max_ms", "%u", jb->jitter.stats.size_max*packet_ms);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_size_est_ms", "%u", jb->jitter.stats.size_est*packet_ms);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_acceleration_ms", "%u", jb->jitter.stats.acceleration*packet_ms);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_expand_ms", "%u", jb->jitter.stats.expand*packet_ms);
if (jb->jitter.stats.jitter_max_ms < jb->jitter.stats.estimate_ms) {
jb->jitter.stats.jitter_max_ms = jb->jitter.stats.estimate_ms;
}
switch_channel_set_variable_printf(jb->channel, "rtp_jb_jitter_max_ms", "%u", jb->jitter.stats.jitter_max_ms);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_jitter_est_ms", "%u", jb->jitter.stats.estimate_ms);
}
if (old) {
sort_free_nodes(jb);
}
switch_mutex_unlock(jb->list_mutex);
jb_debug(jb, SWITCH_LOG_INFO, "JITTER buffersize %u == %u old[%u] target[%u] seq[%u|%u]\n", count, h_seq-l_seq+1, old, ntohs(jb->target_seq), l_seq, h_seq);
return count;
}
static inline switch_status_t jb_next_packet_by_seq_with_acceleration(switch_jb_t *jb, switch_jb_node_t **nodep)
{
switch_status_t status = jb_next_packet_by_seq(jb, nodep);
switch_rtp_packet_t *packet;
uint32_t len;
uint16_t seq = ntohs(jb->target_seq);
/* When using a Codec that provides voice activity detection ex. Opus, use it to
select packet to drop/accelerate. */
if (jb->elastic && jb->jitter.estimate && (jb->visible_nodes*jb->jitter.samples_per_frame)>0 && jb->jitter.samples_per_second) {
int visible_not_old = check_jb_size(jb);
jb->jitter.stats.estimate_ms = (int)((*jb->jitter.estimate)/((jb->jitter.samples_per_second))*1000);
jb->jitter.stats.buffer_size_ms = (int)((visible_not_old*jb->jitter.samples_per_frame)/(jb->jitter.samples_per_second/1000));
// We try to accelerate in order to remove delay when the jitter buffer is 3x larger than the estimation.
if (jb->jitter.stats.buffer_size_ms > (3*jb->jitter.stats.estimate_ms) && jb->jitter.stats.buffer_size_ms > 60) {
if (status == SWITCH_STATUS_SUCCESS) {
packet = &(*nodep)->packet;
seq = ntohs((*nodep)->packet.header.seq);
len = (*nodep)->len;
}
if (jb->jitter.drop_gap > 0) {
jb_debug(jb, SWITCH_LOG_INFO, "JITTER estimation %dms buffersize %d/%d %dms seq:%u [drop-gap][%d]\n",
jb->jitter.stats.estimate_ms, jb->complete_frames , jb->frame_len, jb->jitter.stats.buffer_size_ms, seq, jb->jitter.drop_gap);
jb->jitter.drop_gap--;
} else {
if (status != SWITCH_STATUS_SUCCESS || packet_vad(jb, packet, len) == SWITCH_FALSE) {
jb->jitter.drop_gap = 3;
if (status != SWITCH_STATUS_SUCCESS) {
jb_debug(jb, SWITCH_LOG_INFO, "JITTER estimation n/a buffersize %d/%d %dms seq:%u [drop-missing/no-plc]\n",
jb->complete_frames , jb->frame_len, jb->jitter.stats.buffer_size_ms, seq);
} else {
jb_debug(jb, SWITCH_LOG_INFO, "JITTER estimation %dms buffersize %d/%d %dms seq:%u ACCELERATE [drop]\n",
jb->jitter.stats.estimate_ms, jb->complete_frames , jb->frame_len, jb->jitter.stats.buffer_size_ms, seq);
}
jb->jitter.stats.acceleration++;
return jb_next_packet_by_seq(jb, nodep);
} else {
jb_debug(jb, SWITCH_LOG_INFO, "JITTER estimation %dms buffersize %d/%d %dms seq:%u [drop-skip-vad]\n",
jb->jitter.stats.estimate_ms, jb->complete_frames , jb->frame_len, jb->jitter.stats.buffer_size_ms, seq);
}
}
} else {
jb_debug(jb, 2, "JITTER estimation %dms buffersize %d/%d %dms\n",
jb->jitter.stats.estimate_ms, jb->complete_frames , jb->frame_len, jb->jitter.stats.buffer_size_ms);
}
}
return status;
}
static inline switch_status_t jb_next_packet(switch_jb_t *jb, switch_jb_node_t **nodep) static inline switch_status_t jb_next_packet(switch_jb_t *jb, switch_jb_node_t **nodep)
{ {
if (jb->samples_per_frame) { if (jb->samples_per_frame) {
return jb_next_packet_by_ts(jb, nodep); return jb_next_packet_by_ts(jb, nodep);
} else { } else {
return jb_next_packet_by_seq(jb, nodep); switch_status_t status;
if (jb->elastic && jb->jitter.estimate) {
status = jb_next_packet_by_seq_with_acceleration(jb, nodep);
} else {
status = jb_next_packet_by_seq(jb, nodep);
}
return status;
} }
} }
@ -877,13 +1052,50 @@ SWITCH_DECLARE(void) switch_jb_ts_mode(switch_jb_t *jb, uint32_t samples_per_fra
switch_core_inthash_init(&jb->node_hash_ts); switch_core_inthash_init(&jb->node_hash_ts);
} }
SWITCH_DECLARE(void) switch_jb_set_jitter_estimator(switch_jb_t *jb, double *jitter, uint32_t samples_per_frame, uint32_t samples_per_second)
{
if (jb && jitter) {
memset(&jb->jitter,0,sizeof(switch_jb_jitter_t));
switch_channel_set_variable_printf(jb->channel, "rtp_jb_max_ms", "%u", 0);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_size_ms", "%u", 0);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_acceleration_ms", "%u", 0);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_expand_ms", "%u", 0);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_jitter_max_ms", "%u", 0);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_jitter_ms", "%u", 0);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_reset_count", "%u", 0);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_reset_too_big", "%u", 0);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_reset_missing_frames", "%u", 0);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_reset_ts_jump", "%u", 0);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_reset_error", "%u", 0);
jb->jitter.estimate = jitter;
jb->jitter.samples_per_frame = samples_per_frame;
jb->jitter.samples_per_second = samples_per_second;
jb->jitter.drop_gap = 5;
}
}
SWITCH_DECLARE(void) switch_jb_set_session(switch_jb_t *jb, switch_core_session_t *session) SWITCH_DECLARE(void) switch_jb_set_session(switch_jb_t *jb, switch_core_session_t *session)
{ {
const char *var; const char *var;
if (session) { if (session) {
jb->codec = switch_core_session_get_read_codec(session);
jb->session = session; jb->session = session;
jb->channel = switch_core_session_get_channel(session); jb->channel = switch_core_session_get_channel(session);
if (!strcmp(jb->codec->implementation->iananame, "opus")) {
if (switch_true(switch_channel_get_variable(jb->channel, "rtp_jitter_buffer_accelerate"))) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "codec is %s, accelerate on\n", jb->codec->implementation->iananame);
jb->elastic = SWITCH_TRUE;
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "codec is %s, accelerate off\n", jb->codec->implementation->iananame);
jb->elastic = SWITCH_FALSE;
}
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "codec not opus: %s\n", jb->codec->implementation->iananame);
jb->elastic = SWITCH_FALSE;
}
if (jb->type == SJB_VIDEO && !switch_test_flag(jb, SJB_QUEUE_ONLY) && if (jb->type == SJB_VIDEO && !switch_test_flag(jb, SJB_QUEUE_ONLY) &&
(var = switch_channel_get_variable_dup(jb->channel, "jb_video_low_bitrate", SWITCH_FALSE, -1))) { (var = switch_channel_get_variable_dup(jb->channel, "jb_video_low_bitrate", SWITCH_FALSE, -1))) {
int tmp = atoi(var); int tmp = atoi(var);
@ -932,6 +1144,12 @@ SWITCH_DECLARE(void) switch_jb_debug_level(switch_jb_t *jb, uint8_t level)
SWITCH_DECLARE(void) switch_jb_reset(switch_jb_t *jb) SWITCH_DECLARE(void) switch_jb_reset(switch_jb_t *jb)
{ {
jb->jitter.stats.reset++;
switch_channel_set_variable_printf(jb->channel, "rtp_jb_reset_count", "%u", jb->jitter.stats.reset);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_reset_too_big", "%u", jb->jitter.stats.reset_too_big);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_reset_missing_frames", "%u", jb->jitter.stats.reset_missing_frames);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_reset_ts_jump", "%u", jb->jitter.stats.reset_ts_jump);
switch_channel_set_variable_printf(jb->channel, "rtp_jb_reset_error", "%u", jb->jitter.stats.reset_error);
if (jb->type == SJB_VIDEO) { if (jb->type == SJB_VIDEO) {
switch_mutex_lock(jb->mutex); switch_mutex_lock(jb->mutex);
@ -1257,6 +1475,7 @@ SWITCH_DECLARE(switch_status_t) switch_jb_put_packet(switch_jb_t *jb, switch_rtp
if (got > want) { if (got > want) {
if (got - want > jb->max_frame_len && got - want > 17) { if (got - want > jb->max_frame_len && got - want > 17) {
jb_debug(jb, 2, "Missing %u frames, Resetting\n", got - want); jb_debug(jb, 2, "Missing %u frames, Resetting\n", got - want);
jb->jitter.stats.reset_missing_frames++;
switch_jb_reset(jb); switch_jb_reset(jb);
} else { } else {
@ -1434,6 +1653,7 @@ SWITCH_DECLARE(switch_status_t) switch_jb_get_packet(switch_jb_t *jb, switch_rtp
switch(status) { switch(status) {
case SWITCH_STATUS_RESTART: case SWITCH_STATUS_RESTART:
jb_debug(jb, 2, "%s", "Error encountered\n"); jb_debug(jb, 2, "%s", "Error encountered\n");
jb->jitter.stats.reset_error++;
switch_jb_reset(jb); switch_jb_reset(jb);
switch_goto_status(SWITCH_STATUS_RESTART, end); switch_goto_status(SWITCH_STATUS_RESTART, end);
case SWITCH_STATUS_NOTFOUND: case SWITCH_STATUS_NOTFOUND:
@ -1444,7 +1664,22 @@ SWITCH_DECLARE(switch_status_t) switch_jb_get_packet(switch_jb_t *jb, switch_rtp
jb_debug(jb, 2, "%s", "Too many frames not found, RESIZE\n"); jb_debug(jb, 2, "%s", "Too many frames not found, RESIZE\n");
switch_goto_status(SWITCH_STATUS_RESTART, end); switch_goto_status(SWITCH_STATUS_RESTART, end);
} else { } else {
jb_debug(jb, 2, "%s", "Frame not found suggest PLC\n"); if (jb->elastic) {
int visible_not_old = check_jb_size(jb);
jb->jitter.stats.estimate_ms = (int)((*jb->jitter.estimate)/((jb->jitter.samples_per_second))*1000);
jb->jitter.stats.buffer_size_ms = (int)((visible_not_old*jb->jitter.samples_per_frame)/(jb->jitter.samples_per_second/1000));
/* When playing PLC, we take the oportunity to expand the buffer if the jitter buffer is smaller than the 3x the estimated jitter. */
if (jb->jitter.stats.buffer_size_ms < (3*jb->jitter.stats.estimate_ms)) {
jb_debug(jb, SWITCH_LOG_INFO, "JITTER estimation %dms buffersize %d/%d %dms EXPAND [plc]\n",
jb->jitter.stats.estimate_ms, jb->complete_frames , jb->frame_len, jb->jitter.stats.buffer_size_ms);
jb->jitter.stats.expand++;
decrement_seq(jb);
} else {
jb_debug(jb, 2, "%s", "Frame not found suggest PLC\n");
}
} else {
jb_debug(jb, 2, "%s", "Frame not found suggest PLC\n");
}
plc = 1; plc = 1;
switch_goto_status(SWITCH_STATUS_NOTFOUND, end); switch_goto_status(SWITCH_STATUS_NOTFOUND, end);
} }

1
src/switch_rtp.c
View File

@ -4676,6 +4676,7 @@ SWITCH_DECLARE(switch_status_t) switch_rtp_activate_jitter_buffer(switch_rtp_t *
READ_INC(rtp_session); READ_INC(rtp_session);
status = switch_jb_create(&rtp_session->jb, SJB_AUDIO, queue_frames, max_queue_frames, rtp_session->pool); status = switch_jb_create(&rtp_session->jb, SJB_AUDIO, queue_frames, max_queue_frames, rtp_session->pool);
switch_jb_set_session(rtp_session->jb, rtp_session->session); switch_jb_set_session(rtp_session->jb, rtp_session->session);
switch_jb_set_jitter_estimator(rtp_session->jb, &rtp_session->stats.rtcp.inter_jitter, samples_per_packet, samples_per_second);
if (switch_true(switch_channel_get_variable_dup(switch_core_session_get_channel(rtp_session->session), "jb_use_timestamps", SWITCH_FALSE, -1))) { if (switch_true(switch_channel_get_variable_dup(switch_core_session_get_channel(rtp_session->session), "jb_use_timestamps", SWITCH_FALSE, -1))) {
switch_jb_ts_mode(rtp_session->jb, samples_per_packet, samples_per_second); switch_jb_ts_mode(rtp_session->jb, samples_per_packet, samples_per_second);
} }