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implemented wait_key

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This commit is contained in:
Roman Arutyunyan 2012-10-27 20:47:35 +04:00
parent 284e521e82
commit e178a42c63
3 changed files with 109 additions and 46 deletions
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139
ngx_rtmp_live_module.c
View file

@ -74,6 +74,13 @@ static ngx_command_t ngx_rtmp_live_commands[] = {
offsetof(ngx_rtmp_live_app_conf_t, interleave),
NULL },
{ ngx_string("wait_key"),
NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_TAKE1,
ngx_conf_set_flag_slot,
NGX_RTMP_APP_CONF_OFFSET,
offsetof(ngx_rtmp_live_app_conf_t, wait_key),
NULL },
ngx_null_command
};
@ -123,6 +130,7 @@ ngx_rtmp_live_create_app_conf(ngx_conf_t *cf)
lacf->sync = NGX_CONF_UNSET;
lacf->atc = NGX_CONF_UNSET;
lacf->interleave = NGX_CONF_UNSET;
lacf->wait_key = NGX_CONF_UNSET;
return lacf;
}
@ -141,6 +149,7 @@ ngx_rtmp_live_merge_app_conf(ngx_conf_t *cf, void *parent, void *child)
ngx_conf_merge_msec_value(conf->sync, prev->sync, 0);
ngx_conf_merge_value(conf->atc, prev->atc, 0);
ngx_conf_merge_value(conf->interleave, prev->interleave, 0);
ngx_conf_merge_value(conf->wait_key, prev->wait_key, 0);
conf->pool = ngx_create_pool(4096, &cf->cycle->new_log);
if (conf->pool == NULL) {
@ -318,7 +327,7 @@ next:
static ngx_int_t
ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
ngx_chain_t *in)
ngx_chain_t *in)
{
ngx_rtmp_live_ctx_t *ctx, *pctx;
ngx_rtmp_codec_ctx_t *codec_ctx;
@ -327,6 +336,7 @@ ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
ngx_rtmp_live_app_conf_t *lacf;
ngx_rtmp_session_t *ss;
ngx_rtmp_header_t ch, lh;
ngx_int_t rc;
ngx_uint_t prio;
ngx_uint_t peers;
ngx_uint_t header_version, meta_version;
@ -344,12 +354,12 @@ ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
return NGX_ERROR;
}
if (!lacf->live || in == NULL || in->buf == NULL) {
return NGX_OK;
}
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_live_module);
if (!lacf->live ||
in == NULL || in->buf == NULL ||
ctx == NULL || ctx->stream == NULL ||
(h->type != NGX_RTMP_MSG_VIDEO && h->type != NGX_RTMP_MSG_AUDIO))
{
if (ctx == NULL || ctx->stream == NULL) {
return NGX_OK;
}
@ -363,22 +373,28 @@ ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
"live: %s packet timestamp=%uD timeshift=%uD",
type_s, h->timestamp, h->timeshift);
peers = 0;
header = NULL;
pheader = NULL;
header_version = 0;
meta = NULL;
meta_version = 0;
cscf = ngx_rtmp_get_module_srv_conf(s, ngx_rtmp_core_module);
csidx = !(lacf->interleave || h->type == NGX_RTMP_MSG_VIDEO);
hvidx = (h->type == NGX_RTMP_MSG_VIDEO);
cs = &ctx->cs[csidx];
ngx_memzero(&ch, sizeof(ch));
timestamp = h->timestamp;
if (lacf->atc == 0) {
timestamp += h->timeshift;
}
/* prepare output headers */
ngx_memzero(&ch, sizeof(ch));
ngx_memzero(&lh, sizeof(lh));
cs = &ctx->cs[csidx];
ch.timestamp = timestamp;
ch.msid = NGX_RTMP_MSID;
ch.csid = cs->csid;
@ -399,29 +415,28 @@ ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
delta = ch.timestamp - lh.timestamp;
out = ngx_rtmp_append_shared_bufs(cscf, NULL, in);
ngx_rtmp_prepare_message(s, &ch, &lh, out);
peers = 0;
header = NULL;
pheader = NULL;
header_version = 0;
meta = NULL;
meta_version = 0;
ngx_rtmp_prepare_message(s, &ch, &lh, out);
codec_ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_codec_module);
if (codec_ctx) {
if (h->type == NGX_RTMP_MSG_AUDIO) {
if (codec_ctx->aac_header) {
header = codec_ctx->aac_header;
header_version = codec_ctx->aac_version;
}
} else {
if (codec_ctx->avc_header) {
header = codec_ctx->avc_header;
header_version = codec_ctx->avc_version;
}
}
if (lacf->meta && codec_ctx->meta) {
meta = codec_ctx->meta;
meta_version = codec_ctx->meta_version;
@ -429,6 +444,7 @@ ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
}
/* broadcast to all subscribers */
for (pctx = ctx->stream->ctx; pctx; pctx = pctx->next) {
if (pctx == ctx) {
continue;
@ -446,6 +462,7 @@ ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
cs = &pctx->cs[csidx];
/* send metadata if newer exists */
if (meta && meta_version != pctx->meta_version) {
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, ss->connection->log, 0,
"live: sending metadata");
@ -455,54 +472,86 @@ ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
}
}
/* send absolute frame */
/* first packet in stream */
if (!cs->active) {
/* packet from the past for the peer */
if (lacf->atc == 0 && timestamp < (uint32_t) ss->epoch) {
ngx_log_debug3(NGX_LOG_DEBUG_RTMP, ss->connection->log, 0,
"live: %s packet from the past %uD < %uD",
type_s, timestamp, (uint32_t)ss->epoch);
if (lacf->wait_key && h->type == NGX_RTMP_MSG_VIDEO &&
prio != NGX_RTMP_VIDEO_KEY_FRAME)
{
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, ss->connection->log, 0,
"live: skipping non-key frame");
continue;
}
if (header) {
/* send absolute codec header */
if (lacf->atc == 0 && lh.timestamp & (1 << 31)) {
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, ss->connection->log, 0,
"live: abs %s header from the past", type_s);
continue;
}
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, ss->connection->log, 0,
"live: abs %s header timestamp=%uD",
type_s, lh.timestamp);
pkt = ngx_rtmp_append_shared_bufs(cscf, NULL, header);
ngx_rtmp_prepare_message(s, &lh, NULL, pkt);
if (ngx_rtmp_send_message(ss, pkt, 0) == NGX_OK) {
cs->timestamp = lh.timestamp;
cs->active = 1;
pctx->header_versions[hvidx] = header_version;
}
rc = ngx_rtmp_send_message(ss, pkt, 0);
ngx_rtmp_free_shared_chain(cscf, pkt);
if (rc != NGX_OK) {
continue;
}
cs->timestamp = lh.timestamp;
cs->active = 1;
pctx->header_versions[hvidx] = header_version;
} else {
/* send absolute packet */
if (lacf->atc == 0 && ch.timestamp & (1 << 31)) {
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, ss->connection->log, 0,
"live: abs %s packet from the past", type_s);
continue;
}
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, ss->connection->log, 0,
"live: abs %s frame timestamp=%uD",
type_s, ch.timestamp);
pkt = ngx_rtmp_append_shared_bufs(cscf, NULL, in);
ngx_rtmp_prepare_message(s, &ch, NULL, pkt);
if (ngx_rtmp_send_message(ss, pkt, prio) == NGX_OK) {
cs->timestamp = ch.timestamp;
cs->active = 1;
++peers;
}
rc = ngx_rtmp_send_message(ss, pkt, prio);
ngx_rtmp_free_shared_chain(cscf, pkt);
if (rc != NGX_OK) {
continue;
}
cs->timestamp = ch.timestamp;
cs->active = 1;
++peers;
continue;
}
}
/* send absolute frame to sync stream */
/* send empty absolute frame to sync stream */
if (!lacf->interleave && lacf->sync &&
cs->timestamp + lacf->sync < lh.timestamp)
{
@ -511,14 +560,22 @@ ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
type_s, (ngx_int_t) (lh.timestamp - cs->timestamp));
pkt = ngx_rtmp_alloc_shared_buf(cscf);
ngx_rtmp_prepare_message(s, &lh, NULL, pkt);
if (ngx_rtmp_send_message(ss, pkt, 0) == NGX_OK) {
cs->timestamp = lh.timestamp;
}
rc = ngx_rtmp_send_message(ss, pkt, 0);
ngx_rtmp_free_shared_chain(cscf, pkt);
if (rc != NGX_OK) {
continue;
}
cs->timestamp = lh.timestamp;
}
/* send codec header if newer header has arrived */
if (header && pctx->header_versions[hvidx] != header_version) {
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, ss->connection->log, 0,
"live: new %s header", type_s);
@ -533,11 +590,11 @@ ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
}
}
/* push buffered data */
/* send frame */
if (ngx_rtmp_send_message(ss, out, prio) == NGX_OK) {
cs->timestamp += delta;
++peers;
continue;
}
}

1
ngx_rtmp_live_module.h
View file

@ -59,6 +59,7 @@ typedef struct {
ngx_msec_t sync;
ngx_flag_t atc;
ngx_flag_t interleave;
ngx_flag_t wait_key;
ngx_msec_t buflen;
ngx_pool_t *pool;
ngx_rtmp_live_stream_t *free_streams;

15
ngx_rtmp_stat_module.c
View file

@ -309,11 +309,16 @@ ngx_rtmp_stat_live(ngx_http_request_t *r, ngx_chain_t ***lll,
"%uz", ctx->dropped) - buf);
NGX_RTMP_STAT_L("</dropped>");
/*NGX_RTMP_STAT_L("<avsync>");
NGX_RTMP_STAT(buf, ngx_snprintf(buf, sizeof(buf),
"%L", (int64_t)ctx->last_audio
- ctx->last_video) - buf);
NGX_RTMP_STAT_L("</avsync>");*/
if (ctx->cs[0].active && ctx->cs[1].active) {
NGX_RTMP_STAT_L("<avsync>");
NGX_RTMP_STAT(buf, ngx_snprintf(buf, sizeof(buf),
"%L", (int64_t) ctx->cs[0].timestamp -
(int64_t) ctx->cs[1].timestamp) - buf);
NGX_RTMP_STAT_L("</avsync>");
}
if (s->flashver.len) {
NGX_RTMP_STAT_L("<flashver>");