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#include "decklink.hpp"
#include "decklink-device-discovery.hpp"
#include "decklink-device-instance.hpp"
#include "decklink-device-mode.hpp"
#include <util/threading.h>
DeckLink::DeckLink(obs_source_t *source, DeckLinkDeviceDiscovery *discovery_) :
discovery(discovery_), source(source)
{
discovery->AddCallback(DeckLink::DevicesChanged, this);
}
DeckLink::~DeckLink(void)
{
discovery->RemoveCallback(DeckLink::DevicesChanged, this);
Deactivate();
}
DeckLinkDevice *DeckLink::GetDevice() const
{
return instance ? instance->GetDevice() : nullptr;
}
void DeckLink::DevicesChanged(void *param, DeckLinkDevice *device, bool added)
{
DeckLink *decklink = reinterpret_cast<DeckLink*>(param);
std::lock_guard<std::recursive_mutex> lock(decklink->deviceMutex);
obs_source_update_properties(decklink->source);
if (added && !decklink->instance) {
const char *hash;
long long mode;
obs_data_t *settings;
settings = obs_source_get_settings(decklink->source);
hash = obs_data_get_string(settings, "device_hash");
mode = obs_data_get_int(settings, "mode_id");
obs_data_release(settings);
if (device->GetHash().compare(hash) == 0) {
if (!decklink->activateRefs)
return;
if (decklink->Activate(device, mode))
os_atomic_dec_long(&decklink->activateRefs);
}
} else if (!added && decklink->instance) {
if (decklink->instance->GetDevice() == device) {
os_atomic_inc_long(&decklink->activateRefs);
decklink->Deactivate();
}
}
}
bool DeckLink::Activate(DeckLinkDevice *device, long long modeId)
{
std::lock_guard<std::recursive_mutex> lock(deviceMutex);
DeckLinkDevice *curDevice = GetDevice();
const bool same = device == curDevice;
const bool isActive = instance != nullptr;
if (same) {
if (!isActive)
return false;
if (instance->GetActiveModeId() == modeId &&
instance->GetActivePixelFormat() == pixelFormat)
return false;
}
if (isActive)
instance->StopCapture();
if (!same)
instance.Set(new DeckLinkDeviceInstance(this, device));
if (instance == nullptr)
return false;
DeckLinkDeviceMode *mode = GetDevice()->FindMode(modeId);
if (mode == nullptr) {
instance = nullptr;
return false;
}
if (!instance->StartCapture(mode)) {
instance = nullptr;
return false;
}
os_atomic_inc_long(&activateRefs);
SaveSettings();
return true;
}
void DeckLink::Deactivate(void)
{
std::lock_guard<std::recursive_mutex> lock(deviceMutex);
if (instance)
instance->StopCapture();
instance = nullptr;
os_atomic_dec_long(&activateRefs);
}
void DeckLink::SaveSettings()
{
if (!instance)
return;
DeckLinkDevice *device = instance->GetDevice();
DeckLinkDeviceMode *mode = instance->GetMode();
obs_data_t *settings = obs_source_get_settings(source);
obs_data_set_string(settings, "device_hash",
device->GetHash().c_str());
obs_data_set_string(settings, "device_name",
device->GetDisplayName().c_str());
obs_data_set_int(settings, "mode_id", instance->GetActiveModeId());
obs_data_set_string(settings, "mode_name", mode->GetName().c_str());
obs_data_release(settings);
}
obs_source_t *DeckLink::GetSource(void) const
{
return source;
}
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