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FS-8406 #resolve #comment improvement to drop video packets on slow rtmp link

This commit is contained in:
Seven Du 2016-02-04 08:32:06 +08:00
parent 13c99e938b
commit 3d90d752fc
5 changed files with 152 additions and 49 deletions
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1
src/mod/endpoints/mod_rtmp/mod_rtmp.c
View File

@ -911,7 +911,6 @@ switch_status_t rtmp_session_request(rtmp_profile_t *profile, rtmp_session_t **n
{
char buf[1024];
#ifndef _WIN32
#else
snprintf(buf, sizeof(buf), "/tmp/rtmp-%s-in.txt", (*newsession)->uuid);
(*newsession)->io_debug_in = fopen(buf, "w");
snprintf(buf, sizeof(buf), "/tmp/rtmp-%s-out.txt", (*newsession)->uuid);

1
src/mod/endpoints/mod_rtmp/mod_rtmp.h
View File

@ -515,6 +515,7 @@ struct rtmp_session {
uint32_t media_streamid; /* < The stream id that was used for the last "play" command,
where we should send media */
switch_size_t dropped_video_frame;
switch_queue_t *video_send_queue;
uint8_t media_debug;
};

188
src/mod/endpoints/mod_rtmp/rtmp.c
View File

@ -41,6 +41,17 @@ typedef struct {
size_t len;
} buffer_helper_t;
typedef struct {
uint8_t amfnumber;
uint32_t timestamp;
uint8_t type;
uint32_t stream_id;
switch_size_t len;
uint32_t flags;
unsigned char *message;
} video_send_buffer_t;
size_t my_buffer_read(void * out_buffer, size_t size, void * user_data)
{
buffer_helper_t *helper = (buffer_helper_t*)user_data;
@ -561,8 +572,62 @@ switch_status_t rtmp_send_invoke_v(rtmp_session_t *rsession, uint8_t amfnumber,
return rtmp_send_message(rsession, amfnumber, timestamp, type, stream_id, buf, helper.pos, 0);
}
static int flush_video_send_queue(rtmp_session_t *rsession, switch_bool_t lock)
{
video_send_buffer_t *b;
void *pop;
switch_queue_t *q = rsession->video_send_queue;
int x = 0;
if (!q) return 0;
if (lock) switch_mutex_lock(rsession->socket_mutex);
while (switch_queue_size(q) > 0 && switch_queue_trypop(q, &pop) == SWITCH_STATUS_SUCCESS && pop) {
b = (video_send_buffer_t *)pop;
free(b->message);
free(b);
x++;
}
if (lock) switch_mutex_unlock(rsession->socket_mutex);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Dropped %d Video Frames\n", x);
return x;
}
static void buffer_video_send(rtmp_session_t *rsession, uint8_t amfnumber, uint32_t timestamp, uint8_t type, uint32_t stream_id, const unsigned char *message, switch_size_t len, uint32_t flags)
{
video_send_buffer_t *vbuf;
switch_mutex_lock(rsession->socket_mutex);
if (!rsession->video_send_queue) {
switch_queue_create(&rsession->video_send_queue, 1000, rsession->pool);
}
if (*message == 0x17) {
flush_video_send_queue(rsession, SWITCH_FALSE);
}
vbuf = malloc(sizeof(video_send_buffer_t));
switch_assert(vbuf);
vbuf->amfnumber = amfnumber;
vbuf->timestamp = timestamp;
vbuf->type = type;
vbuf->stream_id = stream_id;
vbuf->len = len;
vbuf->flags = flags;
vbuf->message = malloc(len);
switch_assert(vbuf->message);
memcpy(vbuf->message, message, len);
switch_queue_push(rsession->video_send_queue, (void *)vbuf);
switch_mutex_unlock(rsession->socket_mutex);
}
/* Break message down into 128 bytes chunks, add the appropriate headers and send it out */
switch_status_t rtmp_send_message(rtmp_session_t *rsession, uint8_t amfnumber, uint32_t timestamp, uint8_t type, uint32_t stream_id, const unsigned char *message, switch_size_t len, uint32_t flags)
switch_status_t _rtmp_send_message(rtmp_session_t *rsession, uint8_t amfnumber, uint32_t timestamp, uint8_t type, uint32_t stream_id, const unsigned char *message, switch_size_t len, uint32_t flags)
{
switch_size_t pos = 0;
uint8_t header[12] = { amfnumber & 0x3F, INT24(0), INT24(len), type, INT32_LE(stream_id) };
@ -575,52 +640,6 @@ switch_status_t rtmp_send_message(rtmp_session_t *rsession, uint8_t amfnumber, u
// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%d send_ack=%d send=%d window=%d wait_ack=%d\n",
// type, rsession->send_ack, rsession->send, rsession->send_ack_window, rsession->send + 3073 - rsession->send_ack);
if (type == RTMP_TYPE_VIDEO) {
uint32_t window = rsession->send_ack_window;
if (rsession->media_debug & RTMP_MD_VIDEO_WRITE) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "W V ts:%u data:0x%02x len:%" SWITCH_SIZE_T_FMT "\n", timestamp, *message, len);
}
/* start to drop video frame on window/2 if the frame is a non-IDR video frame
start to drop video frame on window * 3/4 if the frame is a IDR frame
start to drop audio frame on widnow full
*/
if (*message == 0x17) {
window = window / 4 * 3;
} else {
window /= 2;
}
if ((rsession->send_ack + window) < (rsession->send + 3073)) {
/* We're sending too fast, drop the frame */
rsession->dropped_video_frame++;
switch_log_printf(SWITCH_CHANNEL_UUID_LOG(rsession->uuid), SWITCH_LOG_DEBUG,
"DROP VIDEO FRAME [amfnumber=%d type=0x%x stream_id=0x%x ftype=0x%x] len=%"SWITCH_SIZE_T_FMT
" dropped=%"SWITCH_SIZE_T_FMT"\n",
amfnumber, type, stream_id, *message, len, rsession->dropped_video_frame);
return SWITCH_STATUS_SUCCESS;
}
if (rsession->dropped_video_frame) {
if (*message != 0x17) {
rsession->dropped_video_frame++;
switch_log_printf(SWITCH_CHANNEL_UUID_LOG(rsession->uuid), SWITCH_LOG_DEBUG,
"DROP VIDEO FRAME [amfnumber=%d type=0x%x stream_id=0x%x ftype=0x%x] len=%"SWITCH_SIZE_T_FMT
" dropped=%"SWITCH_SIZE_T_FMT" waiting for the next IDR\n",
amfnumber, type, stream_id, *message, len, rsession->dropped_video_frame);
return SWITCH_STATUS_SUCCESS;
} else {
switch_log_printf(SWITCH_CHANNEL_UUID_LOG(rsession->uuid), SWITCH_LOG_INFO,
"Got IDR frame after %"SWITCH_SIZE_T_FMT" frame(s) dropped\n",
rsession->dropped_video_frame);
rsession->dropped_video_frame = 0;
}
}
}
if (type == RTMP_TYPE_AUDIO && (rsession->media_debug & RTMP_MD_AUDIO_WRITE)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "W A ts:%u data:0x%02x len:%" SWITCH_SIZE_T_FMT "\n", timestamp, *message, len);
}
@ -696,6 +715,8 @@ switch_status_t rtmp_send_message(rtmp_session_t *rsession, uint8_t amfnumber, u
header[3] = timestamp & 0xFF;
}
// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "=== send type: %d ts: %d bytes: %zu\n", type, timestamp, len);
state->ts = timestamp;
state->type = type;
state->origlen = len;
@ -740,6 +761,79 @@ end:
return status;
}
switch_status_t rtmp_send_message(rtmp_session_t *rsession, uint8_t amfnumber, uint32_t timestamp, uint8_t type, uint32_t stream_id, const unsigned char *message, switch_size_t len, uint32_t flags)
{
switch_status_t status = SWITCH_STATUS_SUCCESS;
int window = rsession->send_ack_window;
// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%d send_ack=%d send=%d window=%d wait_ack=%d\n",
// type, rsession->send_ack, rsession->send, rsession->send_ack_window, rsession->send + 3073 - rsession->send_ack);
if (type != RTMP_TYPE_VIDEO) {
return _rtmp_send_message(rsession, amfnumber, timestamp, type, stream_id, message, len, flags);
}
if (rsession->media_debug & RTMP_MD_VIDEO_WRITE) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "W V ts:%u data:0x%02x len:%" SWITCH_SIZE_T_FMT "\n", timestamp, *message, len);
}
window = window / 4 * 3;
// window = 65000;
if ((rsession->send_ack + window) < (rsession->send + 3073)) {
buffer_video_send(rsession, amfnumber, timestamp, type, stream_id, message, len, flags);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "queued %zu bytes, ts: %d, queue size:%d\n", len, timestamp, switch_queue_size(rsession->video_send_queue));
return SWITCH_STATUS_SUCCESS;
}
if (rsession->video_send_queue && switch_queue_size(rsession->video_send_queue)) {
if (*message == 0x17) { // key frame
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Got a key frame, flush video queue %d\n", switch_queue_size(rsession->video_send_queue));
flush_video_send_queue(rsession, SWITCH_TRUE);
return _rtmp_send_message(rsession, amfnumber, timestamp, type, stream_id, message, len, flags);
} else {
int x = 0;
void *pop = NULL;
buffer_video_send(rsession, amfnumber, timestamp, type, stream_id, message, len, flags);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "queued %zu bytes, ts: %d, queue size:%d\n", len, timestamp, switch_queue_size(rsession->video_send_queue));
again:
switch_mutex_lock(rsession->socket_mutex);
switch_queue_trypop(rsession->video_send_queue, &pop);
switch_mutex_unlock(rsession->socket_mutex);
if (pop) {
video_send_buffer_t *vbuf = (video_send_buffer_t *)pop;
amfnumber = vbuf->amfnumber;
// timestamp = vbuf->timestamp;
type = vbuf->type;
stream_id = vbuf->stream_id;
len = vbuf->len;
flags = vbuf->flags;
message = vbuf->message;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "pop len: %zu, ts: %d, queue size: %d\n", len, timestamp, switch_queue_size(rsession->video_send_queue));
status = _rtmp_send_message(rsession, amfnumber, timestamp, type, stream_id, message, len, flags);
free(vbuf->message);
free(vbuf);
if (status == SWITCH_STATUS_SUCCESS && ((rsession->send_ack + window) >= (rsession->send + 3073) && (++x < 3))) {
pop = NULL;
goto again;
}
}
}
} else {
return _rtmp_send_message(rsession, amfnumber, timestamp, type, stream_id, message, len, flags);
}
return status;
}
/* Returns SWITCH_STATUS_SUCCESS of the connection is still active or SWITCH_STATUS_FALSE to tear it down */
switch_status_t rtmp_handle_data(rtmp_session_t *rsession)
{

4
src/mod/endpoints/mod_rtmp/rtmp_tcp.c
View File

@ -301,6 +301,10 @@ switch_status_t rtmp_tcp_init(rtmp_profile_t *profile, const char *bindaddr, rtm
if (switch_socket_opt_set(io_tcp->listen_socket, SWITCH_SO_TCP_NODELAY, 1)) {
goto fail;
}
if (1) {
switch_socket_opt_set(io_tcp->listen_socket, SWITCH_SO_RCVBUF, 1572864);
switch_socket_opt_set(io_tcp->listen_socket, SWITCH_SO_SNDBUF, 1572864);
}
if (switch_socket_bind(io_tcp->listen_socket, sa)) {
goto fail;
}

7
src/mod/endpoints/mod_rtmp/rtmp_video.c
View File

@ -583,7 +583,7 @@ switch_status_t rtmp_write_video_frame(switch_core_session_t *session, switch_fr
rtmp_rtp2rtmpH264(helper, frame);
if (helper->send) {
uint16_t used = switch_buffer_inuse(helper->rtmp_buf);
uint32_t used = switch_buffer_inuse(helper->rtmp_buf);
const void *rtmp_data = NULL;
switch_buffer_peek_zerocopy(helper->rtmp_buf, &rtmp_data);
@ -633,6 +633,11 @@ switch_status_t rtmp_write_video_frame(switch_core_session_t *session, switch_fr
switch_core_session_rwunlock(other_session);
}
}
if (rsession->video_send_queue && switch_queue_size(rsession->video_send_queue) > 30) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Need a key frame\n");
switch_channel_set_flag(channel, CF_VIDEO_REFRESH_REQ);
}
skip:
switch_buffer_zero(helper->rtmp_buf);
switch_buffer_zero(helper->fua_buf);