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Anthony Minessale committed 2015-09-17 17:34:58 -05:00
1 parent 6a19590508
commit 4a56b7d145
4 files changed
+122 -56
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src/switch_jitterbuffer.c
+80 -35
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@@ -78,6 +78,7 @@ struct switch_jb_s {
uint32_t dropped;
uint32_t samples_per_frame;
uint32_t samples_per_second;
uint32_t bitrate_control;
uint8_t write_init;
uint8_t read_init;
uint8_t debug_level;
@@ -375,6 +376,31 @@ static inline uint32_t jb_find_lowest_ts(switch_jb_t *jb)
return lowest ? lowest->packet.header.ts : 0;
}
static inline switch_jb_node_t *jb_find_highest_node(switch_jb_t *jb)
{
switch_jb_node_t *np, *highest = NULL;
switch_mutex_lock(jb->list_mutex);
for (np = jb->node_list; np; np = np->next) {
if (!np->visible) continue;
if (!highest || ntohl(highest->packet.header.ts) < ntohl(np->packet.header.ts)) {
highest = np;
}
}
switch_mutex_unlock(jb->list_mutex);
return highest ? highest : NULL;
}
static inline uint32_t jb_find_highest_ts(switch_jb_t *jb)
{
switch_jb_node_t *highest = jb_find_highest_node(jb);
return highest ? highest->packet.header.ts : 0;
}
static inline void jb_hit(switch_jb_t *jb)
{
jb->period_good_count++;
@@ -382,7 +408,7 @@ static inline void jb_hit(switch_jb_t *jb)
jb->consec_miss_count = 0;
}
static void jb_frame_inc(switch_jb_t *jb, int i)
static void jb_frame_inc_line(switch_jb_t *jb, int i, int line)
{
uint32_t old_frame_len = jb->frame_len;
@@ -415,34 +441,37 @@ static void jb_frame_inc(switch_jb_t *jb, int i)
jb->highest_frame_len = jb->frame_len;
}
if (jb->type == SJB_VIDEO && (jb->frame_len > jb->min_frame_len || jb->frame_len == jb->min_frame_len)) {
if (jb->channel) {
if (jb->frame_len == jb->min_frame_len) {
jb_debug(jb, 2, "%s", "Allow BITRATE changes\n");
switch_channel_clear_flag(jb->channel, CF_VIDEO_BITRATE_UNMANAGABLE);
} else {
switch_core_session_message_t msg = { 0 };
int new_bitrate = 512;
if (jb->type == SJB_VIDEO && jb->channel) {
int ok = (jb->frame_len <= jb->min_frame_len + 1);
if (switch_channel_test_flag(jb->channel, CF_VIDEO_BITRATE_UNMANAGABLE) && ok) {
jb_debug(jb, 2, "%s", "Allow BITRATE changes\n");
switch_channel_clear_flag(jb->channel, CF_VIDEO_BITRATE_UNMANAGABLE);
jb->bitrate_control = 0;
} else if (!ok) {
switch_core_session_message_t msg = { 0 };
jb->bitrate_control = 512;
msg.message_id = SWITCH_MESSAGE_INDICATE_BITRATE_REQ;
msg.numeric_arg = new_bitrate * 1024;
msg.from = __FILE__;
msg.message_id = SWITCH_MESSAGE_INDICATE_BITRATE_REQ;
msg.numeric_arg = jb->bitrate_control * 1024;
msg.from = __FILE__;
jb_debug(jb, 2, "Force BITRATE to %d\n", new_bitrate);
switch_core_session_receive_message(jb->session, &msg);
switch_channel_set_flag(jb->channel, CF_VIDEO_BITRATE_UNMANAGABLE);
jb_debug(jb, 2, "Force BITRATE to %d\n", jb->bitrate_control);
switch_core_session_receive_message(jb->session, &msg);
switch_channel_set_flag(jb->channel, CF_VIDEO_BITRATE_UNMANAGABLE);
}
}
}
if (old_frame_len != jb->frame_len) {
jb_debug(jb, 2, "Change framelen from %u to %u\n", old_frame_len, jb->frame_len);
jb_debug(jb, 2, "%d Change framelen from %u to %u\n", line, old_frame_len, jb->frame_len);
}
}
#define jb_frame_inc(_jb, _i) jb_frame_inc_line(_jb, _i, __LINE__)
static inline void jb_miss(switch_jb_t *jb)
{
jb->period_miss_count++;
@@ -496,6 +525,14 @@ static inline void drop_oldest_frame(switch_jb_t *jb)
jb_debug(jb, 1, "Dropping oldest frame ts:%u\n", ntohl(ts));
}
static inline void drop_newest_frame(switch_jb_t *jb)
{
uint32_t ts = jb_find_highest_ts(jb);
drop_ts(jb, ts);
jb_debug(jb, 1, "Dropping highest frame ts:%u\n", ntohl(ts));
}
static inline void add_node(switch_jb_t *jb, switch_rtp_packet_t *packet, switch_size_t len)
{
switch_jb_node_t *node = new_node(jb);
@@ -513,19 +550,15 @@ static inline void add_node(switch_jb_t *jb, switch_rtp_packet_t *packet, switch
jb_debug(jb, (packet->header.m ? 1 : 2), "PUT packet last_ts:%u ts:%u seq:%u%s\n",
ntohl(jb->highest_wrote_ts), ntohl(node->packet.header.ts), ntohs(node->packet.header.seq), packet->header.m ? " <MARK>" : "");
if (jb->write_init && ((abs(((int)ntohs(packet->header.seq) - ntohs(jb->highest_wrote_seq))) >= jb->max_frame_len) ||
(abs((int)((int64_t)ntohl(node->packet.header.ts) - (int64_t)ntohl(jb->highest_wrote_ts))) > (900000 * 5)))) {
jb_debug(jb, 2, "%s", "CHANGE DETECTED, PUNT\n");
switch_jb_reset(jb);
}
//if (jb->write_init && ((abs(((int)ntohs(packet->header.seq) - ntohs(jb->highest_wrote_seq))) >= jb->max_frame_len) ||
//(abs((int)((int64_t)ntohl(node->packet.header.ts) - (int64_t)ntohl(jb->highest_wrote_ts))) > (900000 * 5)))) {
//jb_debug(jb, 2, "%s", "CHANGE DETECTED, PUNT\n");
//switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "%s Jitter Buffer anomoly, max size may be too small...\n",
//jb->type == SJB_AUDIO ? "Audio" : "Video");
//switch_jb_reset(jb);
//}
if (!jb->write_init || ntohs(packet->header.seq) > ntohs(jb->highest_wrote_seq) ||
(ntohs(jb->highest_wrote_seq) > USHRT_MAX - 10 && ntohs(packet->header.seq) <= 10) ) {
jb->highest_wrote_seq = packet->header.seq;
@@ -550,10 +583,6 @@ static inline void add_node(switch_jb_t *jb, switch_rtp_packet_t *packet, switch
}
if (!jb->write_init) jb->write_init = 1;
if (jb->complete_frames > jb->max_frame_len + MAX_FRAME_PADDING) {
drop_oldest_frame(jb);
}
}
static inline void increment_ts(switch_jb_t *jb)
@@ -834,7 +863,12 @@ SWITCH_DECLARE(switch_status_t) switch_jb_get_frames(switch_jb_t *jb, uint32_t *
SWITCH_DECLARE(switch_status_t) switch_jb_set_frames(switch_jb_t *jb, uint32_t min_frame_len, uint32_t max_frame_len)
{
int lowest = 0;
switch_mutex_lock(jb->mutex);
if (jb->frame_len == jb->min_frame_len) lowest = 1;
jb->min_frame_len = min_frame_len;
jb->max_frame_len = max_frame_len;
@@ -850,6 +884,10 @@ SWITCH_DECLARE(switch_status_t) switch_jb_set_frames(switch_jb_t *jb, uint32_t m
jb->highest_frame_len = jb->frame_len;
}
if (lowest) {
jb->frame_len = jb->min_frame_len;
}
switch_mutex_unlock(jb->mutex);
return SWITCH_STATUS_SUCCESS;
@@ -1052,13 +1090,14 @@ SWITCH_DECLARE(switch_status_t) switch_jb_get_packet(switch_jb_t *jb, switch_rtp
switch_status_t status;
switch_mutex_lock(jb->mutex);
jb_debug(jb, 2, "GET PACKET %u/%u n:%d\n", jb->complete_frames , jb->frame_len, jb->visible_nodes);
if (jb->complete_frames < jb->frame_len) {
jb_debug(jb, 2, "BUFFERING %u/%u\n", jb->complete_frames , jb->frame_len);
switch_goto_status(SWITCH_STATUS_MORE_DATA, end);
}
jb_debug(jb, 2, "GET PACKET %u/%u n:%d\n", jb->complete_frames , jb->frame_len, jb->visible_nodes);
if (++jb->period_count >= PERIOD_LEN) {
if (jb->consec_good_count >= (PERIOD_LEN - 5)) {
@@ -1145,6 +1184,12 @@ SWITCH_DECLARE(switch_status_t) switch_jb_get_packet(switch_jb_t *jb, switch_rtp
switch_mutex_unlock(jb->mutex);
if (status == SWITCH_STATUS_SUCCESS) {
if (jb->complete_frames > jb->max_frame_len) {
drop_oldest_frame(jb);
}
}
return status;
}