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livetrax/libs/surfaces/websockets/dispatcher.cc
Luciano Iam ae4df127ad
WebSockets: implement a JavaScript object-oriented client API
Replace previous callback based basic client with an easier
to use object-oriented API that further abstracts the low level
details of the WebSockets Server surface messaging protocol.

All built-in web surface demos were updated to use the new API.
2020-06-10 19:47:37 +02:00

329 lines
9.2 KiB
C++

/*
* Copyright (C) 2020 Luciano Iam <lucianito@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <boost/assign.hpp>
#include "ardour/plugin_insert.h"
#include "ardour_websockets.h"
#include "dispatcher.h"
#include "state.h"
using namespace ARDOUR;
#define NODE_METHOD_PAIR(x) (Node::x, &WebsocketsDispatcher::x##_handler)
WebsocketsDispatcher::NodeMethodMap
WebsocketsDispatcher::_node_to_method = boost::assign::map_list_of
NODE_METHOD_PAIR (tempo)
NODE_METHOD_PAIR (transport_roll)
NODE_METHOD_PAIR (record_state)
NODE_METHOD_PAIR (strip_gain)
NODE_METHOD_PAIR (strip_pan)
NODE_METHOD_PAIR (strip_mute)
NODE_METHOD_PAIR (strip_plugin_enable)
NODE_METHOD_PAIR (strip_plugin_param_value);
void
WebsocketsDispatcher::dispatch (Client client, const NodeStateMessage& msg)
{
NodeMethodMap::iterator it = _node_to_method.find (msg.state ().node ());
if (it != _node_to_method.end ()) {
try {
(this->*it->second) (client, msg);
} catch (const std::exception& e) {
std::cerr << e.what () << std::endl;
}
}
}
void
WebsocketsDispatcher::update_all_nodes (Client client)
{
for (uint32_t strip_n = 0; strip_n < strips ().strip_count (); ++strip_n) {
boost::shared_ptr<Stripable> strip = strips ().nth_strip (strip_n);
bool is_vca = strip->presentation_info ().flags () & ARDOUR::PresentationInfo::VCA;
AddressVector strip_addr = AddressVector ();
strip_addr.push_back (strip_n);
ValueVector strip_desc = ValueVector ();
strip_desc.push_back (strip->name ());
strip_desc.push_back (is_vca);
update (client, Node::strip_description, strip_addr, strip_desc);
update (client, Node::strip_gain, strip_n, strips ().strip_gain (strip_n));
update (client, Node::strip_mute, strip_n, strips ().strip_mute (strip_n));
// Pan and plugins not available in VCAs
if (is_vca) {
continue;
}
boost::shared_ptr<Route> route = boost::dynamic_pointer_cast<Route> (strip);
if (!route) {
continue;
}
update (client, Node::strip_pan, strip_n, strips ().strip_pan (strip_n));
for (uint32_t plugin_n = 0;; ++plugin_n) {
boost::shared_ptr<PluginInsert> insert = strips ()
.strip_plugin_insert (strip_n, plugin_n);
if (!insert) {
break;
}
boost::shared_ptr<Plugin> plugin = insert->plugin ();
update (client, Node::strip_plugin_description, strip_n, plugin_n,
static_cast<std::string> (plugin->name ()));
update (client, Node::strip_plugin_enable, strip_n, plugin_n,
strips ().strip_plugin_enabled (strip_n, plugin_n));
for (uint32_t param_n = 0; param_n < plugin->parameter_count (); ++param_n) {
boost::shared_ptr<AutomationControl> a_ctrl =
strips ().strip_plugin_param_control (strip_n, plugin_n, param_n);
if (!a_ctrl) {
continue;
}
AddressVector addr = AddressVector ();
addr.push_back (strip_n);
addr.push_back (plugin_n);
addr.push_back (param_n);
ValueVector val = ValueVector ();
val.push_back (a_ctrl->name ());
// possible flags: enumeration, integer_step, logarithmic, sr_dependent, toggled
ParameterDescriptor pd = a_ctrl->desc ();
if (pd.toggled) {
val.push_back (std::string ("b"));
} else if (pd.enumeration || pd.integer_step) {
val.push_back (std::string ("i"));
val.push_back (pd.lower);
val.push_back (pd.upper);
} else {
val.push_back (std::string ("d"));
val.push_back (pd.lower);
val.push_back (pd.upper);
val.push_back (pd.logarithmic);
}
update (client, Node::strip_plugin_param_description, addr, val);
TypedValue value = strips ().strip_plugin_param_value (strip_n, plugin_n, param_n);
update (client, Node::strip_plugin_param_value, strip_n, plugin_n, param_n, value);
}
}
}
update (client, Node::tempo, globals ().tempo ());
update (client, Node::position_time, globals ().position_time ());
update (client, Node::transport_roll, globals ().transport_roll ());
update (client, Node::record_state, globals ().record_state ());
}
void
WebsocketsDispatcher::tempo_handler (Client client, const NodeStateMessage& msg)
{
const NodeState& state = msg.state ();
if (msg.is_write () && (state.n_val () > 0)) {
globals ().set_tempo (state.nth_val (0));
} else {
update (client, Node::tempo, globals ().tempo ());
}
}
void
WebsocketsDispatcher::transport_roll_handler (Client client, const NodeStateMessage& msg)
{
const NodeState& state = msg.state ();
if (msg.is_write () && (state.n_val () > 0)) {
globals ().set_transport_roll (state.nth_val (0));
} else {
update (client, Node::transport_roll, globals ().transport_roll ());
}
}
void
WebsocketsDispatcher::record_state_handler (Client client, const NodeStateMessage& msg)
{
const NodeState& state = msg.state ();
if (msg.is_write () && (state.n_val () > 0)) {
globals ().set_record_state (state.nth_val (0));
} else {
update (client, Node::record_state, globals ().record_state ());
}
}
void
WebsocketsDispatcher::strip_gain_handler (Client client, const NodeStateMessage& msg)
{
const NodeState& state = msg.state ();
if (state.n_addr () < 1) {
return;
}
uint32_t strip_id = state.nth_addr (0);
if (msg.is_write () && (state.n_val () > 0)) {
strips ().set_strip_gain (strip_id, state.nth_val (0));
} else {
update (client, Node::strip_gain, strip_id, strips ().strip_gain (strip_id));
}
}
void
WebsocketsDispatcher::strip_pan_handler (Client client, const NodeStateMessage& msg)
{
const NodeState& state = msg.state ();
if (state.n_addr () < 1) {
return;
}
uint32_t strip_id = state.nth_addr (0);
if (msg.is_write () && (state.n_val () > 0)) {
strips ().set_strip_pan (strip_id, state.nth_val (0));
} else {
update (client, Node::strip_pan, strip_id, strips ().strip_pan (strip_id));
}
}
void
WebsocketsDispatcher::strip_mute_handler (Client client, const NodeStateMessage& msg)
{
const NodeState& state = msg.state ();
if (state.n_addr () < 1) {
return;
}
uint32_t strip_id = state.nth_addr (0);
if (msg.is_write () && (state.n_val () > 0)) {
strips ().set_strip_mute (strip_id, state.nth_val (0));
} else {
update (client, Node::strip_mute, strip_id, strips ().strip_mute (strip_id));
}
}
void
WebsocketsDispatcher::strip_plugin_enable_handler (Client client, const NodeStateMessage& msg)
{
const NodeState& state = msg.state ();
if (state.n_addr () < 2) {
return;
}
uint32_t strip_id = state.nth_addr (0);
uint32_t plugin_id = state.nth_addr (1);
if (msg.is_write () && (state.n_val () > 0)) {
strips ().set_strip_plugin_enabled (strip_id, plugin_id, state.nth_val (0));
} else {
update (client, Node::strip_plugin_enable, strip_id, plugin_id,
strips ().strip_plugin_enabled (strip_id, plugin_id));
}
}
void
WebsocketsDispatcher::strip_plugin_param_value_handler (Client client, const NodeStateMessage& msg)
{
const NodeState& state = msg.state ();
if (state.n_addr () < 3) {
return;
}
uint32_t strip_id = state.nth_addr (0);
uint32_t plugin_id = state.nth_addr (1);
uint32_t param_id = state.nth_addr (2);
if (msg.is_write () && (state.n_val () > 0)) {
strips ().set_strip_plugin_param_value (strip_id, plugin_id, param_id,
state.nth_val (0));
} else {
TypedValue value = strips ().strip_plugin_param_value (strip_id, plugin_id, param_id);
update (client, Node::strip_plugin_param_value, strip_id, plugin_id, param_id, value);
}
}
void
WebsocketsDispatcher::update (Client client, std::string node, TypedValue val1)
{
update (client, node, ADDR_NONE, ADDR_NONE, ADDR_NONE, val1);
}
void
WebsocketsDispatcher::update (Client client, std::string node, uint32_t strip_n, TypedValue val1)
{
update (client, node, strip_n, ADDR_NONE, ADDR_NONE, val1);
}
void
WebsocketsDispatcher::update (Client client, std::string node, uint32_t strip_n, uint32_t plugin_n,
TypedValue val1)
{
update (client, node, strip_n, plugin_n, ADDR_NONE, val1);
}
void
WebsocketsDispatcher::update (Client client, std::string node, uint32_t strip_n, uint32_t plugin_n,
uint32_t param_n, TypedValue val1)
{
AddressVector addr = AddressVector ();
if (strip_n != ADDR_NONE) {
addr.push_back (strip_n);
}
if (plugin_n != ADDR_NONE) {
addr.push_back (plugin_n);
}
if (param_n != ADDR_NONE) {
addr.push_back (param_n);
}
ValueVector val = ValueVector ();
if (!val1.empty ()) {
val.push_back (val1);
}
update (client, node, addr, val);
}
void
WebsocketsDispatcher::update (Client client, std::string node, const AddressVector& addr,
const ValueVector& val)
{
server ().update_client (client, NodeState (node, addr, val), true);
}