Fix #1506, support directly turn FLV timestamp to TS DTS. 3.0.68

README.md

@@ -145,6 +145,7 @@ For previous versions, please read:
 
 ## V3 changes
 
+* v3.0, 2019-12-05, Fix [#1506][bug #1501], support directly turn FLV timestamp to TS DTS. 3.0.68
 * <strong>v3.0, 2019-11-30, [3.0 alpha2(3.0.67)][r3.0a3] released. 110864 lines.</strong>
 * v3.0, 2019-12-01, Fix [#1501][bug #1501], use request coworker for origin cluster. 3.0.67
 * <strong>v3.0, 2019-11-30, [3.0 alpha2(3.0.66)][r3.0a2] released. 110831 lines.</strong>

trunk/conf/full.conf

@@ -1123,6 +1123,15 @@ vhost hls.srs.com {
         # @remark It's optional.
         hls_key_url       https://localhost:8080;
 
+        # Special control controls.
+        ###########################################
+        # Whether calculate the DTS of audio frame directly.
+        # If on, guess the specific DTS by AAC samples, please read https://github.com/ossrs/srs/issues/547#issuecomment-294350544
+        # If off, directly turn the FLV timestamp to DTS, which might cause corrupt audio stream.
+        # @remark Recommend to set to off, unless your audio stream sample-rate and timestamp is not correct.
+        # Default: off
+        hls_dts_directly off;
+
         # on_hls, never config in here, should config in http_hooks.
         # for the hls http callback, @see http_hooks.on_hls of vhost hooks.callback.srs.com
         # @read https://github.com/ossrs/srs/wiki/v2_CN_DeliveryHLS#http-callback

trunk/src/app/srs_app_config.cpp

@@ -2589,6 +2589,8 @@ srs_error_t SrsConfig::vhost_to_json(SrsConfDirective* vhost, SrsJsonObject* obj
                 hls->set("hls_dispose", sdir->dumps_arg0_to_number());
             } else if (sdir->name == "hls_nb_notify") {
                 hls->set("hls_nb_notify", sdir->dumps_arg0_to_integer());
+            } else if (sdir->name == "hls_dts_directly") {
+                hls->set("hls_dts_directly", sdir->dumps_arg0_to_boolean());
             } else if (sdir->name == "hls_wait_keyframe") {
                 hls->set("hls_wait_keyframe", sdir->dumps_arg0_to_boolean());
             } else if (sdir->name == "hls_keys") {
@@ -3751,7 +3753,7 @@ srs_error_t SrsConfig::check_normal_config()
                         && m != "hls_storage" && m != "hls_mount" && m != "hls_td_ratio" && m != "hls_aof_ratio" && m != "hls_acodec" && m != "hls_vcodec"
                         && m != "hls_m3u8_file" && m != "hls_ts_file" && m != "hls_ts_floor" && m != "hls_cleanup" && m != "hls_nb_notify"
                         && m != "hls_wait_keyframe" && m != "hls_dispose" && m != "hls_keys" && m != "hls_fragments_per_key" && m != "hls_key_file"
-                        && m != "hls_key_file_path" && m != "hls_key_url") {
+                        && m != "hls_key_file_path" && m != "hls_key_url" && m != "hls_dts_directly") {
                         return srs_error_new(ERROR_SYSTEM_CONFIG_INVALID, "illegal vhost.hls.%s of %s", m.c_str(), vhost->arg0().c_str());
                     }
                     
@@ -6148,6 +6150,23 @@ int SrsConfig::get_vhost_hls_nb_notify(string vhost)
     return ::atoi(conf->arg0().c_str());
 }
 
+bool SrsConfig::get_vhost_hls_dts_directly(string vhost)
+{
+    static bool DEFAULT = false;
+
+    SrsConfDirective* conf = get_hls(vhost);
+    if (!conf) {
+        return DEFAULT;
+    }
+
+    conf = conf->get("hls_dts_directly");
+    if (!conf || conf->arg0().empty()) {
+        return DEFAULT;
+    }
+
+    return SRS_CONF_PERFER_FALSE(conf->arg0());
+}
+
 bool SrsConfig::get_hls_cleanup(string vhost)
 {
     static bool DEFAULT = true;

trunk/src/app/srs_app_config.hpp

@@ -825,6 +825,8 @@ public:
     // Get the size of bytes to read from cdn network, for the on_hls_notify callback,
     // that is, to read max bytes of the bytes from the callback, or timeout or error.
     virtual int get_vhost_hls_nb_notify(std::string vhost);
+    // Whether turn the FLV timestamp to TS DTS.
+    virtual bool get_vhost_hls_dts_directly(std::string vhost);
 // hds section
 private:
     // Get the hds directive of vhost.

trunk/src/app/srs_app_hls.cpp

@@ -1062,6 +1062,7 @@ SrsHls::SrsHls()
     enabled = false;
     disposable = false;
     last_update_time = 0;
+    hls_dts_directly = false;
     
     previous_audio_dts = 0;
     aac_samples = 0;
@@ -1161,6 +1162,11 @@ srs_error_t SrsHls::on_publish()
         return srs_error_wrap(err, "hls: on publish");
     }
 
+    // TODO: FIXME: Support reload.
+    // TODO: FIXME: Support RAW API.
+    // If enabled, directly turn FLV timestamp to TS DTS.
+    hls_dts_directly = _srs_config->get_vhost_hls_dts_directly(req->vhost);
+    
     // if enabled, open the muxer.
     enabled = true;
     
@@ -1256,6 +1262,12 @@ srs_error_t SrsHls::on_audio(SrsSharedPtrMessage* shared_audio, SrsFormat* forma
     aac_samples += nb_samples_per_frame;
     int64_t dts = 90000 * aac_samples / srs_flv_srates[format->acodec->sound_rate];
 
+    // If directly turn FLV timestamp, overwrite the guessed DTS.
+    // @doc https://github.com/ossrs/srs/issues/1506#issuecomment-562063095
+    if (hls_dts_directly) {
+        dts = audio->timestamp * 90;
+    }
+    
     if ((err = controller->write_audio(format->audio, dts)) != srs_success) {
         return srs_error_wrap(err, "hls: write audio");
     }

trunk/src/app/srs_app_hls.hpp

@@ -288,6 +288,8 @@ private:
     int64_t previous_audio_dts;
     // The total aac samples.
     uint64_t aac_samples;
+    // Whether directly turn FLV timestamp to TS DTS.
+    bool hls_dts_directly;
 private:
     SrsOriginHub* hub;
     SrsRtmpJitter* jitter;

trunk/src/core/srs_core.hpp

@@ -27,7 +27,7 @@
 // The version config.
 #define VERSION_MAJOR       3
 #define VERSION_MINOR       0
-#define VERSION_REVISION    67
+#define VERSION_REVISION    68
 
 // The macros generated by configure script.
 #include <srs_auto_headers.hpp>