Add zeroconf/mdns support
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58
libs/ardour/ardour/zeroconf.h
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58
libs/ardour/ardour/zeroconf.h
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@ -0,0 +1,58 @@
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/*
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* Copyright (C) 2022 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <cstdint>
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#include <string>
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#ifdef __APPLE__
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#include <dns_sd.h>
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#include <glibmm/iochannel.h>
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#include <glibmm/main.h>
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#endif
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#include "ardour/libardour_visibility.h"
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#include "ardour/system_exec.h"
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namespace ARDOUR {
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class LIBARDOUR_API ZeroConf
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{
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public:
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ZeroConf (std::string const& type = "_osc._udp", uint16_t port = 3819, std::string const& host = "");
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~ZeroConf ();
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private:
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bool start ();
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void stop ();
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std::string _type;
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uint16_t _port;
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std::string _host;
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#ifdef __APPLE__
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static gboolean event (GIOChannel*, GIOCondition, gpointer);
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DNSServiceRef _ref;
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guint _source_id;
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GIOChannel* _gio_channel;
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#else
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SystemExec* _avahi;
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#endif
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};
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}; // namespace ARDOUR
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@ -282,7 +282,8 @@ libardour_sources = [
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'vca_manager.cc',
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'video_tools_paths.cc',
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'vumeterdsp.cc',
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'worker.cc'
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'worker.cc',
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'zeroconf.cc'
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]
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def options(opt):
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166
libs/ardour/zeroconf.cc
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166
libs/ardour/zeroconf.cc
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@ -0,0 +1,166 @@
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/*
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* Copyright (C) 2022 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "pbd/compose.h"
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#include "pbd/error.h"
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#include "pbd/file_utils.h"
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#include "ardour/filesystem_paths.h"
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#include "ardour/zeroconf.h"
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#include "pbd/i18n.h"
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using namespace ARDOUR;
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ZeroConf::ZeroConf (std::string const& type, uint16_t port, std::string const& host)
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: _type (type)
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, _port (port)
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, _host (host)
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#ifdef __APPLE__
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, _source_id (0)
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, _gio_channel (NULL)
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#else
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, _avahi (NULL)
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#endif
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{
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start ();
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}
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ZeroConf::~ZeroConf ()
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{
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stop ();
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}
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#ifdef __APPLE__
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void
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ZeroConf::stop ()
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{
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if (_gio_channel) {
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g_source_remove (_source_id);
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g_io_channel_unref (_gio_channel);
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}
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DNSServiceRefDeallocate (_ref);
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}
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static void
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dns_callback (DNSServiceRef sdref,
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DNSServiceFlags flags,
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DNSServiceErrorType errorCode,
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const char* name,
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const char* regtype,
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const char* domain, void* context)
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{
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if (errorCode == kDNSServiceErr_NoError) {
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PBD::info << string_compose (_("ZeroConf registered: %1 %2 %3"), name, regtype, domain) << endmsg;
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} else {
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PBD::info << _("ZeroConf registration failed") << endmsg;
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}
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}
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gboolean
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ZeroConf::event (GIOChannel* source,
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GIOCondition condition,
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gpointer data)
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{
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ZeroConf* self = reinterpret_cast<ZeroConf*> (data);
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// assert (_fd == g_io_channel_unix_get_fd (source));
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if (condition & ~G_IO_IN) {
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/* remove on error */
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return false;
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} else {
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if (DNSServiceProcessResult (self->_ref) != kDNSServiceErr_NoError) {
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/* ZeroConf Error in data callback */
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return false;
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}
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return true;
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}
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}
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bool
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ZeroConf::start ()
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{
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if (kDNSServiceErr_NoError != DNSServiceRegister (&_ref, /*flags*/ 0, /*interfaceIndex*/ 0, /*name*/ NULL, _type.c_str (),
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/*domain*/ NULL, _host.empty () ? NULL : _host.c_str (), g_htons (_port),
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/*txtlen*/ 0, /*TXT*/ NULL, dns_callback, this)) {
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return false;
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}
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int fd = DNSServiceRefSockFD (_ref);
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_gio_channel = g_io_channel_unix_new (fd);
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_source_id = g_io_add_watch (_gio_channel, (GIOCondition) (G_IO_IN | G_IO_ERR | G_IO_HUP), ZeroConf::event, this);
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return true;
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}
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#elif defined PLATFORM_WINDOWS
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/* in theory dns_sd API also works on Windows 10+
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* windns.h and dnsapi.dll
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*/
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bool
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ZeroConf::start ()
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{
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return false;
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}
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bool
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ZeroConf::stop ()
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{
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}
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#else
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bool
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ZeroConf::start ()
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{
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std::string avahi_exec;
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PBD::Searchpath sp (ARDOUR::ardour_dll_directory ());
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if (!PBD::find_file (sp, "ardour-avahi.sh", avahi_exec)) {
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PBD::warning << "ardour-avahi.sh was not found." << endmsg;
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return false;
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}
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char** argp;
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char tmp[128];
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argp = (char**)calloc (5, sizeof (char*));
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argp[0] = strdup (avahi_exec.c_str ());
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snprintf (tmp, sizeof (tmp), "%d", _port);
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argp[1] = strdup (tmp);
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argp[2] = strdup (_type.c_str ());
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snprintf (tmp, sizeof (tmp), "%d", getpid ());
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argp[3] = strdup (tmp);
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argp[4] = 0;
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_avahi = new ARDOUR::SystemExec (avahi_exec, argp);
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if (_avahi->start (SystemExec::ShareWithParent)) {
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return false;
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}
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return false;
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}
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void
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ZeroConf::stop ()
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{
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ARDOUR::SystemExec* tmp = _avahi;
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_avahi = 0;
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delete tmp;
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}
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#endif
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24
tools/avahi.sh
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24
tools/avahi.sh
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#!/bin/sh
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set -e
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test -n "`which avahi-publish`"
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test -n "`which tail`"
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PORT=$1
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TYPE=$2
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test -n "$PORT"
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test -n "$TYPE"
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if test -n "$3"; then
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PARENT_PID=$3
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else
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PARENT_PID=$$
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fi
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avahi-publish -s Ardour-$PARENT_PID "$TYPE" "$PORT" &
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CHILD_PID=$!
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trap "kill -- $CHILD_PID" EXIT
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tail --pid=$PARENT_PID -f 2>/dev/null
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@ -506,6 +506,9 @@ EOF
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chmod +x $APPLIB/ardour-util.sh
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fi
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cp $BUILD_ROOT/avahi.sh $APPLIB/ardour-avahi.sh
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chmod +x $APPLIB/ardour-avahi.sh
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OURLIBDIR=$BUILD_ROOT/libs
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OURLIBS=$OURLIBDIR/ctrl-interface/midi_surface:$OURLIBDIR/ctrl-interface/control_protocol:$OURLIBDIR/ardour:$OURLIBDIR/midi++2:$OURLIBDIR/pbd:$OURLIBDIR/gtkmm2ext:$OURLIBDIR/glibmm2:$OURLIBDIR/canvas:$OURLIBDIR/widgets:$OURLIBDIR/waveview:$OURLIBDIR/evoral:$OURLIBDIR/evoral/src/libsmf:$OURLIBDIR/audiographer:$OURLIBDIR/temporal:$OURLIBDIR/libltc:$OURLIBDIR/qm-dsp:$OURLIBDIR/ardouralsautil:$OURLIBDIR/ptformat:$BUILD_ROOT/gtk2_ardour
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7
wscript
7
wscript
@ -10,6 +10,7 @@ import platform as PLATFORM
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from waflib.Tools import winres
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from waflib.Build import Context
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from waflib.Build import BuildContext
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import waflib.Utils as Utils
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# Fixup OSX 10.5/10.6 builds
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# prefer gcc, g++ 4.x over ancient clang-1.5
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@ -1619,6 +1620,12 @@ def build(bld):
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bld.recurse('tools/sanity_check')
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bld.recurse('tools/gccabicheck')
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obj = bld(features = 'subst')
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obj.source = 'tools/avahi.sh'
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obj.target = 'libs/ardour-avahi.sh'
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obj.chmod = Utils.O755
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obj.install_path = bld.env['LIBDIR']
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bld.recurse('libs/clearlooks-newer')
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for i in children:
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