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obs-signal-handler: Helper classes for signals and audio

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Michael Fabian 'Xaymar' Dirks 2020-02-14 07:30:46 +01:00
parent 42c9375333
commit 326fa68d9f
3 changed files with 119 additions and 0 deletions
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2
CMakeLists.txt
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@ -421,6 +421,8 @@ set(PROJECT_PRIVATE_SOURCE
"${PROJECT_SOURCE_DIR}/source/obs/gs/gs-vertex.cpp"
"${PROJECT_SOURCE_DIR}/source/obs/gs/gs-vertexbuffer.hpp"
"${PROJECT_SOURCE_DIR}/source/obs/gs/gs-vertexbuffer.cpp"
"${PROJECT_SOURCE_DIR}/source/obs/obs-signal-handler.hpp"
"${PROJECT_SOURCE_DIR}/source/obs/obs-signal-handler.cpp"
"${PROJECT_SOURCE_DIR}/source/obs/obs-source.hpp"
"${PROJECT_SOURCE_DIR}/source/obs/obs-source.cpp"
"${PROJECT_SOURCE_DIR}/source/obs/obs-source-factory.hpp"

20
source/obs/obs-signal-handler.cpp Normal file
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@ -0,0 +1,20 @@
/*
* Modern effects for a modern Streamer
* Copyright (C) 2018 Michael Fabian Dirks
*
* 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 "obs-signal-handler.hpp"

97
source/obs/obs-signal-handler.hpp Normal file
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@ -0,0 +1,97 @@
/*
* Modern effects for a modern Streamer
* Copyright (C) 2020 Michael Fabian Dirks
*
* 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
*/
#pragma once
#include <cstdint>
#include <string>
#include "util-event.hpp"
#include <obs.h>
namespace obs {
template<typename T>
class signal_handler_base {
protected:
std::string _signal;
public:
util::event<T, calldata*> event;
};
template<typename T>
class signal_handler : public signal_handler_base<T> {
public:
signal_handler(std::string signal, T keepalive) {}
virtual ~signal_handler() {}
};
template<>
class signal_handler<std::shared_ptr<obs_source_t>> : public signal_handler_base<std::shared_ptr<obs_source_t>> {
std::shared_ptr<obs_source_t> _keepalive;
static void handle_signal(void* ptr, calldata* cd) noexcept
try {
auto p = reinterpret_cast<signal_handler<std::shared_ptr<obs_source_t>>&>(ptr);
p.event(p._keepalive, cd);
} catch (...) {
}
public:
signal_handler(std::string signal, std::shared_ptr<obs_source_t> keepalive) : _keepalive(keepalive)
{
_signal = signal;
signal_handler_t* sh = obs_source_get_signal_handler(_keepalive.get());
signal_handler_connect(sh, _signal.c_str(), handle_signal, this);
}
virtual ~signal_handler()
{
event.clear();
signal_handler_t* sh = obs_source_get_signal_handler(_keepalive.get());
signal_handler_disconnect(sh, _signal.c_str(), handle_signal, this);
}
};
typedef signal_handler<std::shared_ptr<obs_source_t>> source_signal_handler;
// Audio Capture is also here, as it could be considered a signal.
class audio_signal_handler {
std::shared_ptr<obs_source_t> _keepalive;
static void handle_audio(void* ptr, obs_source_t*, const struct audio_data* audio_data, bool muted) noexcept
try {
auto p = reinterpret_cast<audio_signal_handler&>(ptr);
p.event(p._keepalive, audio_data, muted);
} catch (...) {
}
public:
audio_signal_handler(std::shared_ptr<obs_source_t> keepalive) : _keepalive(keepalive), event()
{
obs_source_add_audio_capture_callback(_keepalive.get(), handle_audio, this);
}
virtual ~audio_signal_handler()
{
event.clear();
obs_source_remove_audio_capture_callback(_keepalive.get(), handle_audio, this);
}
util::event<std::shared_ptr<obs_source_t>, const struct audio_data*, bool> event;
};
} // namespace obs