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https://github.com/zotanmew/nginx-rtmp-module.git
synced 2024-05-12 15:21:07 +02:00
implemented absolute timestamp feature (atc on)
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@ -151,6 +151,7 @@ typedef struct {
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typedef struct {
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uint32_t csid; /* chunk stream id */
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uint32_t timestamp; /* timestamp (delta) */
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uint32_t timeshift; /* clock - timestamp */
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uint32_t mlen; /* message length */
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uint8_t type; /* message type id */
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uint32_t msid; /* message stream id */
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@ -201,6 +202,7 @@ typedef struct {
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/* connection timestamps */
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ngx_msec_t epoch;
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ngx_msec_t peer_epoch;
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ngx_msec_t base_time;
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/* ping */
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ngx_event_t ping_evt;
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@ -396,6 +396,7 @@ ngx_rtmp_recv(ngx_event_t *rev)
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st->dtime = timestamp;
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} else {
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h->timestamp = timestamp;
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h->timeshift = (uint32_t) ngx_current_msec - timestamp;
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st->dtime = 0;
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}
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}
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@ -60,6 +60,13 @@ static ngx_command_t ngx_rtmp_live_commands[] = {
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offsetof(ngx_rtmp_live_app_conf_t, sync),
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NULL },
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{ ngx_string("atc"),
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NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_flag_slot,
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NGX_RTMP_APP_CONF_OFFSET,
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offsetof(ngx_rtmp_live_app_conf_t, atc),
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NULL },
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ngx_null_command
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};
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@ -107,6 +114,7 @@ ngx_rtmp_live_create_app_conf(ngx_conf_t *cf)
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lacf->nbuckets = NGX_CONF_UNSET;
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lacf->buflen = NGX_CONF_UNSET;
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lacf->sync = NGX_CONF_UNSET;
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lacf->atc = NGX_CONF_UNSET;
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return lacf;
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}
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@ -123,6 +131,7 @@ ngx_rtmp_live_merge_app_conf(ngx_conf_t *cf, void *parent, void *child)
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ngx_conf_merge_value(conf->nbuckets, prev->nbuckets, 1024);
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ngx_conf_merge_msec_value(conf->buflen, prev->buflen, 0);
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ngx_conf_merge_msec_value(conf->sync, prev->sync, 0);
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ngx_conf_merge_value(conf->atc, prev->atc, 0);
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conf->pool = ngx_create_pool(4096, &cf->cycle->new_log);
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if (conf->pool == NULL) {
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@ -337,10 +346,10 @@ ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
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return NGX_OK;
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}
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ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"live: av: %s timestamp=%uD",
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ngx_log_debug3(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"live: av: %s timestamp=%uD timeshift=%uD",
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h->type == NGX_RTMP_MSG_VIDEO ? "video" : "audio",
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h->timestamp);
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h->timestamp, h->timeshift);
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cscf = ngx_rtmp_get_module_srv_conf(s, ngx_rtmp_core_module);
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@ -410,17 +419,21 @@ ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
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++peers;
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ss = pctx->session;
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last = (uint32_t *)((u_char *)pctx + last_offset);
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ch.timestamp = s->epoch + h->timestamp - ss->epoch;
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ch.timestamp = lacf->atc ? h->timestamp :
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h->timeshift + h->timestamp - (uint32_t)ss->epoch;
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/* send absolute frame */
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if ((pctx->msg_mask & (1 << h->type)) == 0) {
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/* packet from the past for the peer */
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if (s->epoch + h->timestamp < ss->epoch) {
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if (lacf->atc == 0 &&
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h->timeshift + h->timestamp < (uint32_t)ss->epoch)
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{
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ngx_log_debug3(NGX_LOG_DEBUG_RTMP, ss->connection->log, 0,
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"live: av: %s packet from the past %uD < %uD",
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h->type == NGX_RTMP_MSG_VIDEO ? "video" : "audio",
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(uint32_t)(s->epoch + h->timestamp), (uint32_t)ss->epoch);
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h->timeshift + h->timestamp, (uint32_t)ss->epoch);
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continue;
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}
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@ -55,6 +55,7 @@ typedef struct {
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ngx_flag_t live;
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ngx_flag_t meta;
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ngx_msec_t sync;
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ngx_flag_t atc;
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ngx_msec_t buflen;
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ngx_pool_t *pool;
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ngx_rtmp_live_stream_t *free_streams;
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