The HTTP Streamer can be enabled via the _streamer_enabled_ daemon parameter.
When the Streamer is active the daemon starts capturing the configured _Sinks_ up to the maximum number of channels configured by the _streamer_channels_ parameters.
The captured PCM samples are split into _streamer_files_num_ files of _streamer_file_duration_ duration (in seconds) for each sink, compressed using AAC LC codec and served via HTTP.
The HTTP streamer requires the libfaac-dev package to compile.
Please note that since the HTTP Streamer uses the RAVENNA ALSA device for capturing it's not possible to use such device for other audio captures.
JSON boolean specifying whether to enable or disable the automatic update of the configured Sinks.
When enabled the daemon will automatically update the configured Sinks according to the discovered remote sources via SAP and mDNS/RTSP updates.
The SDP Originator (o=) is used to match a Sink with the remote source/s.
The daemon can apply a configuration change to the following parameters without a restart:
sap_interval, syslog_proto, syslog_server, log_severity, sample_rate
The daemon can apply a configuration change to the following parameters without a light restart:
http_port, rtsp_port, http_base_dir, rtp_mcast_base, sap_mcast_addr, rtp_port, rtp_port, status_file, interface_name, mdns_enabled
A light restart means that the configuration can be applied without interrupting the playback/capture applications
A change to one of following paramters causes a full daemon restart:
interface_name, tic_frame_size_at_1fs, max_tic_frame_size
On PTP status change the daemon can run in background an external shell script whose path name is specified by the new ptp_status_script Config parameter.
If this parameter is empty, no script is invoked. The PTP clock status is passed as first parameter to the script and it can be unlocked, locking or locked.
A sample script is provided in daemon/scripts/ptp_status.sh
- added address field to Source struct definition to contain the destination address. If this field is left empty the default multicast address is used.
- if a unicast address is provided when creating a new Source the daemon looks in the ARP cache to retrieve the corresponding MAC address.
If this is not found the daemon tries to connect to echo TCP service of the destination host and looks into the ARP cache up to 3 times and then returns and error.
- added RTP address field in the Source creating form of the WebUI. If this field is left empty the default multicast address is used instead.
- updated documentation and regression test suite
This fixes a problem on old Ubuntu distro causing the Node ID to be the same for multiple hosts.
Additional minor changes:
- removed compilation warnings
- some fixes to code indentation
- removed changes to driver/MTAL_LKernelAPI.c in ravenna-alsa-lkm-kernel-v5.patch
- added patch ravenna-alsa-lkm-disable-ptp-checksum.patch to the driver to the disable UDP checksum verification for the incoming PTP packets
- changed build.sh script to use new driver revision and apply the new patch
- added handling of the sink status flag "all_muted" in daemon, WebUI and regression tests
- updated documentation
- mDNS advertisement for all local Sources is implemented by mdns_server.[cpp,hpp] and based on Linux Avahi.
- RTSP server implementation supports DESCRIBE method to return SDP of local Sources and supports persistent connection but doesn't provide service updates via UPDATE method.
- Modified RTSP client to browse for _ravenna_session subtype of _rtsp._tcp services only.
- Modified SAP and mDNS discovery to avoid returning local Sources advertised by the daemon.
- Added "rtsp_port" and "node_id" config parameters.
- rtsp_port is a read/write parameter that contains the port of the RTSP server.
- node_id is a read only parameter that contains the unique daemon identifier used in mDNS and SAP sources announcements.
- Modified session manager to check that every Source and Sink created by the user has a unique name.
- Modified WebUI to visualize node_id and to visualize and edit rtsp_port parameters in Config tab.
- Extended regression test to verify proper behaviour of mDNS/RTSP sources advertisement and discovery.
- Modified REST API to browse remote sources to allow browsing of SAP, mDNS and all sources via HTTP GET /api/browse/sources/[all|mdns|sap].
- Amended daemon documentation.
- browser stores the RTSP sources discovered via mDNS by name and domain
- domain field added to JSON Remote Source params
- removed trailing CR/LF to the end of SAP source name
Added to the WebUI the possibility to directly select a remote source SDP file for a Sink.
New files:
daemon/mdns_client.hpp,cpp -> mDNS client implementation using Avahi client library
daemon/rtsp_client.hpp,cpp -> RTSP client implementation used to transfer SDP file
daemon/utils.cpp -> used for common utility functions
.clang-format -> added clang-format configuration file
Modified files:
daemon/CMakeList.txt -> added support for Avahi and option WITH_AVAHI=[yes/no] to compile the daemon with or without Avahi mDNS support
daemon/config.hpp,cpp -> added configuration option mdns_enabled to enable or disable mDNS discovery at runtime
daemon/json.cpp -> extended JSON config with mdns_enabled option
daemon/browser.hpp,cpp -> added support for mDNS client to the browser
daemon/session_manager.cpp -> added support for RTSP protocol to Source URL field and fixed issue with SDP file parsing
webui/RemoteSources.js -> added visualization of mDNS remote sources
webui/SinkEdit.js -> added the possibility to directly select a remote source SDP file for a Sink
webui/SourceInfo.js -> added visualization of protocol source (SAP, mDNS or local) for a source
ubuntu-packages.sh -> added libavahi-client-dev to the list of required packages
build.sh -> added WITH_AVAHI=yes option when invoking CMake
README.md -> added notes about mDNS support via Avahi
daemon/README.md -> added notes about mDNS support via Avahi, support for RTSP protocol in source and new mdns_enabled config param
Additional minor changes to remaining files.
- added "sap_mcast_addr" parameter to daemon conguration and WebUI to configure the SAP multicast address used for sending and receiving source announcements
- added REST API to retrieve the remote sources collected by the daemon (GET /api/browse/sources)
- added Browser tab to the WebUI to visualize info on the available remote sources
- added Info function to sources listed in the Sources tab to visualize the associated SDP file
- extended daemon regression tests to test the SAP Browser
