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filter/virtual-greenscreen: Wait for internal task to be completed

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This commit is contained in:
Michael Fabian 'Xaymar' Dirks 2021-10-26 23:38:09 +02:00
parent 97318eacac
commit 21f872edfc
1 changed files with 37 additions and 16 deletions
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39
source/filters/filter-virtual-greenscreen.cpp
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@ -94,6 +94,8 @@ virtual_greenscreen_instance::virtual_greenscreen_instance(obs_data_t* data, obs
_provider_ui(virtual_greenscreen_provider::INVALID), _provider_ready(false), _provider_lock(), _provider_task(),
_effect(), _channel0_sampler(), _channel1_sampler(), _input(), _output_color(), _output_alpha(), _dirty(true)
{
D_LOG_DEBUG("Initializating... (Addr: 0x%" PRIuPTR ")", this);
{
::streamfx::obs::gs::context gctx;
@ -131,8 +133,19 @@ virtual_greenscreen_instance::virtual_greenscreen_instance(obs_data_t* data, obs
virtual_greenscreen_instance::~virtual_greenscreen_instance()
{
// TODO: Make this asynchronous.
D_LOG_DEBUG("Finalizing... (Addr: 0x%" PRIuPTR ")", this);
{ // Unload the underlying effect ASAP.
std::unique_lock<std::mutex> ul(_provider_lock);
// De-queue the underlying task.
if (_provider_task) {
streamfx::threadpool()->pop(_provider_task);
_provider_task->await_completion();
_provider_task.reset();
}
// TODO: Make this asynchronous.
switch (_provider) {
#ifdef ENABLE_FILTER_VIRTUAL_GREENSCREEN_NVIDIA
case virtual_greenscreen_provider::NVIDIA_GREENSCREEN:
@ -142,6 +155,7 @@ virtual_greenscreen_instance::~virtual_greenscreen_instance()
default:
break;
}
}
}
void virtual_greenscreen_instance::load(obs_data_t* data)
@ -364,17 +378,24 @@ void streamfx::filter::virtual_greenscreen::virtual_greenscreen_instance::switch
D_LOG_INFO("Instance '%s' is switching provider from '%s' to '%s'.", obs_source_get_name(_self), cstring(_provider),
cstring(provider));
// 1.If there is an existing task, attempt to cancel it.
// If there is an existing task, attempt to cancel it.
if (_provider_task) {
// De-queue it.
streamfx::threadpool()->pop(_provider_task);
// Await the death of the task itself.
_provider_task->await_completion();
// Clear any memory associated with it.
_provider_task.reset();
}
// 2. Build data to pass into the task.
// Build data to pass into the task.
auto spd = std::make_shared<switch_provider_data_t>();
spd->provider = _provider;
_provider = provider;
// 3. Then spawn a new task to switch provider.
// Then spawn a new task to switch provider.
_provider_task = streamfx::threadpool()->push(
std::bind(&virtual_greenscreen_instance::task_switch_provider, this, std::placeholders::_1), spd);
}
@ -384,14 +405,14 @@ void streamfx::filter::virtual_greenscreen::virtual_greenscreen_instance::task_s
{
std::shared_ptr<switch_provider_data_t> spd = std::static_pointer_cast<switch_provider_data_t>(data);
// 1. Mark the provider as no longer ready.
// Mark the provider as no longer ready.
_provider_ready = false;
// 2. Lock the provider from being used.
// Lock the provider from being used.
std::unique_lock<std::mutex> ul(_provider_lock);
try {
// 3. Unload the previous provider.
// Unload the previous provider.
switch (spd->provider) {
#ifdef ENABLE_FILTER_VIRTUAL_GREENSCREEN_NVIDIA
case virtual_greenscreen_provider::NVIDIA_GREENSCREEN:
@ -402,7 +423,7 @@ void streamfx::filter::virtual_greenscreen::virtual_greenscreen_instance::task_s
break;
}
// 4. Load the new provider.
// Load the new provider.
switch (_provider) {
#ifdef ENABLE_FILTER_VIRTUAL_GREENSCREEN_NVIDIA
case virtual_greenscreen_provider::NVIDIA_GREENSCREEN:
@ -422,7 +443,7 @@ void streamfx::filter::virtual_greenscreen::virtual_greenscreen_instance::task_s
D_LOG_INFO("Instance '%s' switched provider from '%s' to '%s'.", obs_source_get_name(_self),
cstring(spd->provider), cstring(_provider));
// 5. Set the new provider as valid.
// Set the new provider as valid.
_provider_ready = true;
} catch (std::exception const& ex) {
// Log information.