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https://github.com/Xaymar/obs-StreamFX
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f396f52054
For simple image and video editing, LUTs (Look-Up Tables) are vastly superior to running the entire editing operation on each pixel - especially if all the processing can be done inside a single shader. Due to the post-processing requirements for our LUTs, we are limited to 8 bits per channel - though clever use of the unused Alpha channel may result in additional space. For our purposes however, this is definitely enough.
75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
// Copyright (c) 2021 Michael Fabian Dirks <info@xaymar.com>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#include "gfx-lut.hpp"
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#include <mutex>
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#include "obs/gs/gs-helper.hpp"
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#include "plugin.hpp"
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using namespace streamfx;
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#define LOCAL_PREFIX "<gfx::lut::data> "
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std::shared_ptr<gfx::lut::data> gfx::lut::data::instance()
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{
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static std::weak_ptr<gfx::lut::data> _instance;
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static std::mutex _mutex;
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std::lock_guard<std::mutex> lock(_mutex);
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auto reference = _instance.lock();
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if (!reference) {
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reference = std::shared_ptr<gfx::lut::data>(new gfx::lut::data());
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_instance = reference;
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}
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return reference;
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}
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gfx::lut::data::data() : _producer_effect(), _consumer_effect()
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{
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auto gctx = gs::context();
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std::filesystem::path lut_producer_path = streamfx::data_file_path("effects/lut-producer.effect");
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if (std::filesystem::exists(lut_producer_path)) {
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try {
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_producer_effect = std::make_shared<gs::effect>(lut_producer_path);
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} catch (std::exception const& ex) {
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DLOG_ERROR(LOCAL_PREFIX "Loading LUT Producer effect failed: %s", ex.what());
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}
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}
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std::filesystem::path lut_consumer_path = streamfx::data_file_path("effects/lut-consumer.effect");
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if (std::filesystem::exists(lut_consumer_path)) {
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try {
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_consumer_effect = std::make_shared<gs::effect>(lut_consumer_path);
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} catch (std::exception const& ex) {
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DLOG_ERROR(LOCAL_PREFIX "Loading LUT Consumer effect failed: %s", ex.what());
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}
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}
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}
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gfx::lut::data::~data()
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{
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auto gctx = gs::context();
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_producer_effect.reset();
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_consumer_effect.reset();
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}
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