encoder: Separate get_defaults and get_properties for SW/HW encoders

The lag in frames is not dictated by the number of threads being used by some encoders. At least for hardware encoders, the expected frame lag in real time encoding is 1 + the number of bframes

CMakeLists.txt

@@ -280,6 +280,8 @@ set(PROJECT_PRIVATE
 	"${PROJECT_SOURCE_DIR}/source/ffmpeg/swscale.cpp"
 	"${PROJECT_SOURCE_DIR}/source/ffmpeg/tools.hpp"
 	"${PROJECT_SOURCE_DIR}/source/ffmpeg/tools.cpp"
+	"${PROJECT_SOURCE_DIR}/source/hwapi/base.hpp"
+	"${PROJECT_SOURCE_DIR}/source/hwapi/base.cpp"
 	"${PROJECT_SOURCE_DIR}/source/ui/handler.hpp"
 	"${PROJECT_SOURCE_DIR}/source/ui/handler.cpp"
 	"${PROJECT_SOURCE_DIR}/source/ui/debug_handler.hpp"
@@ -293,6 +295,12 @@ set(PROJECT_PRIVATE
 	"${PROJECT_SOURCE_DIR}/source/ui/nvenc_hevc_handler.hpp"
 	"${PROJECT_SOURCE_DIR}/source/ui/nvenc_hevc_handler.cpp"
 )
+if(WIN32)
+	list(APPEND PROJECT_PRIVATE 
+		"${PROJECT_SOURCE_DIR}/source/hwapi/d3d11.hpp"
+		"${PROJECT_SOURCE_DIR}/source/hwapi/d3d11.cpp"
+	)
+endif()
 
 # Source Grouping
 source_group(TREE "${PROJECT_SOURCE_DIR}" PREFIX "Data Files" FILES ${PROJECT_DATA})
@@ -357,7 +365,7 @@ endif()
 
 # Link Libraries
 target_link_libraries(${PROJECT_NAME}
-	"${PROJECT_LIBRARIES}"
+	${PROJECT_LIBRARIES}
 	${FFMPEG_LIBRARIES}
 )
 

source/encoder.cpp

@@ -52,6 +52,11 @@ extern "C" {
 // - encode_texture/encode
 // I don't understand what get_video_info is actually for in this order, as this postpones initialization to encode...
 
+#ifdef WIN32
+#define HARDWARE_ENCODING
+#include "hwapi/d3d11.hpp"
+#endif
+
 // FFmpeg
 #define ST_FFMPEG "FFmpeg"
 #define ST_FFMPEG_CUSTOMSETTINGS "FFmpeg.CustomSettings"
@@ -142,6 +147,17 @@ static void _get_defaults(obs_data_t* settings, void* type_data) noexcept try {
 	PLOG_ERROR("Unexpected exception in function '%s'.", __FUNCTION_NAME__);
 };
 
+static void _get_defaults_texture(obs_data_t* settings, void* type_data) noexcept try {
+#ifdef DEBUG_CALL_ORDER
+	PLOG_INFO("%s %llX %llX", __FUNCTION_NAME__, settings, type_data);
+#endif
+	reinterpret_cast<obsffmpeg::encoder_factory*>(type_data)->get_defaults(settings, true);
+} catch (const std::exception& ex) {
+	PLOG_ERROR("Unexpected exception in function '%s': %s.", __FUNCTION_NAME__, ex.what());
+} catch (...) {
+	PLOG_ERROR("Unexpected exception in function '%s'.", __FUNCTION_NAME__);
+};
+
 static obs_properties_t* _get_properties(void* ptr, void* type_data) noexcept try {
 #ifdef DEBUG_CALL_ORDER
 	PLOG_INFO("%s %llX %llX", __FUNCTION_NAME__, ptr, type_data);
@@ -162,6 +178,26 @@ static obs_properties_t* _get_properties(void* ptr, void* type_data) noexcept tr
 	return reinterpret_cast<obs_properties_t*>(0);
 }
 
+static obs_properties_t* _get_properties_texture(void* ptr, void* type_data) noexcept try {
+#ifdef DEBUG_CALL_ORDER
+	PLOG_INFO("%s %llX %llX", __FUNCTION_NAME__, ptr, type_data);
+#endif
+	obs_properties_t* props = obs_properties_create();
+	if (type_data != nullptr) {
+		reinterpret_cast<obsffmpeg::encoder_factory*>(type_data)->get_properties(props, true);
+	}
+	if (ptr != nullptr) {
+		reinterpret_cast<obsffmpeg::encoder*>(ptr)->get_properties(props, true);
+	}
+	return props;
+} catch (const std::exception& ex) {
+	PLOG_ERROR("Unexpected exception in function '%s': %s.", __FUNCTION_NAME__, ex.what());
+	return reinterpret_cast<obs_properties_t*>(0);
+} catch (...) {
+	PLOG_ERROR("Unexpected exception in function '%s'.", __FUNCTION_NAME__);
+	return reinterpret_cast<obs_properties_t*>(0);
+}
+
 static bool _update(void* ptr, obs_data_t* settings) noexcept try {
 #ifdef DEBUG_CALL_ORDER
 	PLOG_INFO("%s %llX %llX", __FUNCTION_NAME__, ptr, settings);
@@ -328,6 +364,7 @@ obsffmpeg::encoder_factory::encoder_factory(const AVCodec* codec) : avcodec_ptr(
 #endif
 
 	// Hardware encoder?
+#ifdef HARDWARE_ENCODING
 	if (ffmpeg::tools::can_hardware_encode(avcodec_ptr)) {
 		info_fallback.uid           = info.uid + "_sw";
 		info_fallback.codec         = info.codec;
@@ -341,6 +378,7 @@ obsffmpeg::encoder_factory::encoder_factory(const AVCodec* codec) : avcodec_ptr(
 
 		info.oei.caps |= OBS_ENCODER_CAP_PASS_TEXTURE;
 	}
+#endif
 }
 
 obsffmpeg::encoder_factory::~encoder_factory() {}
@@ -377,8 +415,10 @@ void obsffmpeg::encoder_factory::register_encoder()
 	info.oei.type_data = this;
 
 	if (ffmpeg::tools::can_hardware_encode(avcodec_ptr)) {
-		info.oei.create         = _create_texture;
-		info.oei.encode_texture = _encode_texture;
+		info.oei.create          = _create_texture;
+		info.oei.encode_texture  = _encode_texture;
+		info.oei.get_defaults2   = _get_defaults_texture;
+		info.oei.get_properties2 = _get_properties_texture;
 
 		info_fallback.oei.type            = info.oei.type;
 		info_fallback.oei.create          = _create;
@@ -406,10 +446,10 @@ void obsffmpeg::encoder_factory::register_encoder()
 	           avcodec_ptr->name, avcodec_ptr->long_name, avcodec_ptr->capabilities);
 }
 
-void obsffmpeg::encoder_factory::get_defaults(obs_data_t* settings)
+void obsffmpeg::encoder_factory::get_defaults(obs_data_t* settings, bool hw_encode)
 {
 	if (_handler)
-		_handler->get_defaults(settings, avcodec_ptr, nullptr);
+		_handler->get_defaults(settings, avcodec_ptr, nullptr, hw_encode);
 
 	if ((avcodec_ptr->capabilities & AV_CODEC_CAP_INTRA_ONLY) == 0) {
 		obs_data_set_default_int(settings, S_KEYFRAMES_INTERVALTYPE, 0);
@@ -420,8 +460,11 @@ void obsffmpeg::encoder_factory::get_defaults(obs_data_t* settings)
 	{ // Integrated Options
 		// FFmpeg
 		obs_data_set_default_string(settings, ST_FFMPEG_CUSTOMSETTINGS, "");
-		obs_data_set_default_int(settings, ST_FFMPEG_COLORFORMAT, static_cast<int64_t>(AV_PIX_FMT_NONE));
-		obs_data_set_default_int(settings, ST_FFMPEG_THREADS, 0);
+		if (!hw_encode) {
+			obs_data_set_default_int(settings, ST_FFMPEG_COLORFORMAT,
+			                         static_cast<int64_t>(AV_PIX_FMT_NONE));
+			obs_data_set_default_int(settings, ST_FFMPEG_THREADS, 0);
+		}
 		obs_data_set_default_int(settings, ST_FFMPEG_STANDARDCOMPLIANCE, FF_COMPLIANCE_STRICT);
 	}
 }
@@ -439,10 +482,10 @@ static bool modified_keyframes(obs_properties_t* props, obs_property_t*, obs_dat
 	return false;
 }
 
-void obsffmpeg::encoder_factory::get_properties(obs_properties_t* props)
+void obsffmpeg::encoder_factory::get_properties(obs_properties_t* props, bool hw_encode)
 {
 	if (_handler)
-		_handler->get_properties(props, avcodec_ptr, nullptr);
+		_handler->get_properties(props, avcodec_ptr, nullptr, hw_encode);
 
 	if ((avcodec_ptr->capabilities & AV_CODEC_CAP_INTRA_ONLY) == 0) {
 		// Key-Frame Options
@@ -491,21 +534,25 @@ void obsffmpeg::encoder_factory::get_properties(obs_properties_t* props)
 			                            obs_text_type::OBS_TEXT_DEFAULT);
 			obs_property_set_long_description(p, TRANSLATE(DESC(ST_FFMPEG_CUSTOMSETTINGS)));
 		}
-		if (avcodec_ptr->pix_fmts) {
-			auto p = obs_properties_add_list(grp, ST_FFMPEG_COLORFORMAT, TRANSLATE(ST_FFMPEG_COLORFORMAT),
-			                                 OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_INT);
-			obs_property_set_long_description(p, TRANSLATE(DESC(ST_FFMPEG_COLORFORMAT)));
-			obs_property_list_add_int(p, TRANSLATE(S_STATE_AUTOMATIC),
-			                          static_cast<int64_t>(AV_PIX_FMT_NONE));
-			for (auto ptr = avcodec_ptr->pix_fmts; *ptr != AV_PIX_FMT_NONE; ptr++) {
-				obs_property_list_add_int(p, ffmpeg::tools::get_pixel_format_name(*ptr),
-				                          static_cast<int64_t>(*ptr));
+		if (!hw_encode) {
+			if (avcodec_ptr->pix_fmts) {
+				auto p = obs_properties_add_list(grp, ST_FFMPEG_COLORFORMAT,
+				                                 TRANSLATE(ST_FFMPEG_COLORFORMAT), OBS_COMBO_TYPE_LIST,
+				                                 OBS_COMBO_FORMAT_INT);
+				obs_property_set_long_description(p, TRANSLATE(DESC(ST_FFMPEG_COLORFORMAT)));
+				obs_property_list_add_int(p, TRANSLATE(S_STATE_AUTOMATIC),
+				                          static_cast<int64_t>(AV_PIX_FMT_NONE));
+				for (auto ptr = avcodec_ptr->pix_fmts; *ptr != AV_PIX_FMT_NONE; ptr++) {
+					obs_property_list_add_int(p, ffmpeg::tools::get_pixel_format_name(*ptr),
+					                          static_cast<int64_t>(*ptr));
+				}
+			}
+			if (avcodec_ptr->capabilities & (AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS)) {
+				auto p =
+				    obs_properties_add_int_slider(grp, ST_FFMPEG_THREADS, TRANSLATE(ST_FFMPEG_THREADS),
+				                                  0, std::thread::hardware_concurrency() * 2, 1);
+				obs_property_set_long_description(p, TRANSLATE(DESC(ST_FFMPEG_THREADS)));
 			}
-		}
-		if (avcodec_ptr->capabilities & (AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS)) {
-			auto p = obs_properties_add_int_slider(grp, ST_FFMPEG_THREADS, TRANSLATE(ST_FFMPEG_THREADS), 0,
-			                                       std::thread::hardware_concurrency() * 2, 1);
-			obs_property_set_long_description(p, TRANSLATE(DESC(ST_FFMPEG_THREADS)));
 		}
 		{
 			auto p = obs_properties_add_list(grp, ST_FFMPEG_STANDARDCOMPLIANCE,
@@ -541,59 +588,8 @@ const obsffmpeg::encoder_info& obsffmpeg::encoder_factory::get_fallback()
 	return info_fallback;
 }
 
-obsffmpeg::encoder::encoder(obs_data_t* settings, obs_encoder_t* encoder, bool is_texture_encode)
-    : _self(encoder), _lag_in_frames(0), _count_send_frames(0), _have_first_frame(false)
+void obsffmpeg::encoder::initialize_sw(obs_data_t* settings)
 {
-	if (is_texture_encode) {
-		throw obsffmpeg::unsupported_gpu_exception("not implemented yet");
-	}
-
-	_factory = reinterpret_cast<encoder_factory*>(obs_encoder_get_type_data(_self));
-
-	// Verify that the codec actually still exists.
-	_codec = avcodec_find_encoder_by_name(_factory->get_avcodec()->name);
-	if (!_codec) {
-		PLOG_ERROR("Failed to find encoder for codec '%s'.", _factory->get_avcodec()->name);
-		throw std::runtime_error("failed to find codec");
-	}
-
-	// Find Codec UI handler.
-	_handler = obsffmpeg::find_codec_handler(_codec->name);
-
-	// Initialize context.
-	_context = avcodec_alloc_context3(_codec);
-	if (!_context) {
-		PLOG_ERROR("Failed to create context for encoder '%s'.", _codec->name);
-		throw std::runtime_error("failed to create context");
-	}
-
-	// Settings
-	/// Rate Control
-	_context->strict_std_compliance = static_cast<int>(obs_data_get_int(settings, ST_FFMPEG_STANDARDCOMPLIANCE));
-	_context->debug                 = 0;
-	/// Threading
-	if (_codec->capabilities
-	    & (AV_CODEC_CAP_AUTO_THREADS | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS)) {
-		if (_codec->capabilities & AV_CODEC_CAP_FRAME_THREADS) {
-			_context->thread_type |= FF_THREAD_FRAME;
-		}
-		if (_codec->capabilities & AV_CODEC_CAP_SLICE_THREADS) {
-			_context->thread_type |= FF_THREAD_SLICE;
-		}
-		int64_t threads = obs_data_get_int(settings, ST_FFMPEG_THREADS);
-		if (threads > 0) {
-			_context->thread_count = static_cast<int>(threads);
-			_lag_in_frames         = _context->thread_count;
-		} else {
-			_context->thread_count = std::thread::hardware_concurrency();
-			_lag_in_frames         = _context->thread_count;
-		}
-	}
-
-	// Create 8MB of precached Packet data for use later on.
-	av_init_packet(&_current_packet);
-	av_new_packet(&_current_packet, 8 * 1024 * 1024); // 8 MB precached Packet size.
-
 	if (_codec->type == AVMEDIA_TYPE_VIDEO) {
 		// Initialize Video Encoding
 		auto voi = video_output_get_info(obs_encoder_video(_self));
@@ -657,9 +653,153 @@ obsffmpeg::encoder::encoder(obs_data_t* settings, obs_encoder_t* encoder, bool i
 			throw std::runtime_error(sstr.str());
 		}
 	}
+}
 
-	{ // Log Encoder info
-		PLOG_INFO("[%s] Initializing...", _codec->name);
+void obsffmpeg::encoder::initialize_hw(obs_data_t*)
+{
+	// Initialize Video Encoding
+	auto voi = video_output_get_info(obs_encoder_video(_self));
+
+	_context->width                   = voi->width;
+	_context->height                  = voi->height;
+	_context->field_order             = AV_FIELD_PROGRESSIVE;
+	_context->ticks_per_frame         = 1;
+	_context->sample_aspect_ratio.num = _context->sample_aspect_ratio.den = 1;
+	_context->framerate.num = _context->time_base.den = voi->fps_num;
+	_context->framerate.den = _context->time_base.num = voi->fps_den;
+	ffmpeg::tools::setup_obs_color(voi->colorspace, voi->range, _context);
+	_context->sw_pix_fmt = ffmpeg::tools::obs_videoformat_to_avpixelformat(voi->format);
+
+#ifdef WIN32
+	_context->pix_fmt = AV_PIX_FMT_D3D11;
+#endif
+
+	_context->hw_device_ctx = _hwinst->create_device_context();
+
+	_context->hw_frames_ctx = av_hwframe_ctx_alloc(_context->hw_device_ctx);
+	if (!_context->hw_frames_ctx)
+		throw std::runtime_error("Failed to allocate AVHWFramesContext.");
+
+	AVHWFramesContext* ctx = reinterpret_cast<AVHWFramesContext*>(_context->hw_frames_ctx->data);
+	ctx->width             = _context->width;
+	ctx->height            = _context->height;
+	ctx->format            = _context->pix_fmt;
+	ctx->sw_format         = _context->sw_pix_fmt;
+
+	if (av_hwframe_ctx_init(_context->hw_frames_ctx) < 0)
+		throw std::runtime_error("Failed to initialize AVHWFramesContext.");
+}
+
+void obsffmpeg::encoder::push_free_frame(std::shared_ptr<AVFrame> frame)
+{
+	auto now = std::chrono::high_resolution_clock::now();
+	if (_free_frames.size() > 0) {
+		if ((now - _free_frames_last_used) < std::chrono::seconds(1)) {
+			_free_frames.push(frame);
+		}
+	} else {
+		_free_frames.push(frame);
+		_free_frames_last_used = std::chrono::high_resolution_clock::now();
+	}
+}
+
+std::shared_ptr<AVFrame> obsffmpeg::encoder::pop_free_frame()
+{
+	std::shared_ptr<AVFrame> frame;
+	if (_free_frames.size() > 0) {
+		// Re-use existing frames first.
+		frame = _free_frames.top();
+		_free_frames.pop();
+	} else {
+		if (_hwinst) {
+			frame = _hwinst->allocate_frame(_context->hw_frames_ctx);
+		} else {
+			frame = std::shared_ptr<AVFrame>(av_frame_alloc(), [](AVFrame* frame) {
+				av_frame_unref(frame);
+				av_frame_free(&frame);
+			});
+
+			frame->width  = _context->width;
+			frame->height = _context->height;
+			frame->format = _context->pix_fmt;
+
+			int res = av_frame_get_buffer(frame.get(), 32);
+			if (res < 0) {
+				throw std::runtime_error(ffmpeg::tools::get_error_description(res));
+			}
+		}
+	}
+
+	return frame;
+}
+
+void obsffmpeg::encoder::push_used_frame(std::shared_ptr<AVFrame> frame)
+{
+	_used_frames.push(frame);
+}
+
+std::shared_ptr<AVFrame> obsffmpeg::encoder::pop_used_frame()
+{
+	auto frame = _used_frames.front();
+	_used_frames.pop();
+	return frame;
+}
+
+obsffmpeg::encoder::encoder(obs_data_t* settings, obs_encoder_t* encoder, bool is_texture_encode)
+    : _self(encoder), _lag_in_frames(0), _count_send_frames(0), _have_first_frame(false)
+{
+	// Initial set up.
+	_factory = reinterpret_cast<encoder_factory*>(obs_encoder_get_type_data(_self));
+	_codec   = _factory->get_avcodec();
+	_handler = obsffmpeg::find_codec_handler(_codec->name);
+
+	if (is_texture_encode) {
+#ifdef WIN32
+		_hwapi = std::make_shared<obsffmpeg::hwapi::d3d11>();
+#endif
+		obsffmpeg::hwapi::device dev;
+		if (_handler)
+			dev = _handler->find_hw_device(_hwapi, _codec, _context);
+		try {
+			_hwinst = _hwapi->create(dev);
+		} catch (...) {
+			throw obsffmpeg::unsupported_gpu_exception("Creating GPU context failed.");
+		}
+	}
+
+	// Initialize context.
+	_context = avcodec_alloc_context3(_codec);
+	if (!_context) {
+		PLOG_ERROR("Failed to create context for encoder '%s'.", _codec->name);
+		throw std::runtime_error("failed to create context");
+	}
+
+	// Create 8MB of precached Packet data for use later on.
+	av_init_packet(&_current_packet);
+	av_new_packet(&_current_packet, 8 * 1024 * 1024); // 8 MB precached Packet size.
+
+	if (!is_texture_encode) {
+		initialize_sw(settings);
+	} else {
+		try {
+			initialize_hw(settings);
+		} catch (...) {
+			throw obsffmpeg::unsupported_gpu_exception("Initializing hardware context failed.");
+		}
+	}
+
+	// Log Encoder info
+	PLOG_INFO("[%s] Initializing...", _codec->name);
+	if (_hwinst) {
+		PLOG_INFO("[%s]   Video Input: %ldx%ld %s %s %s", _codec->name, _context->width, _context->height,
+		          ffmpeg::tools::get_pixel_format_name(_context->sw_pix_fmt),
+		          ffmpeg::tools::get_color_space_name(_context->colorspace),
+		          _swscale.is_source_full_range() ? "Full" : "Partial");
+		PLOG_INFO("[%s]   Video Output: %ldx%ld %s %s %s", _codec->name, _context->width, _context->height,
+		          ffmpeg::tools::get_pixel_format_name(_context->sw_pix_fmt),
+		          ffmpeg::tools::get_color_space_name(_context->colorspace),
+		          _swscale.is_target_full_range() ? "Full" : "Partial");
+	} else {
 		PLOG_INFO("[%s]   Video Input: %ldx%ld %s %s %s", _codec->name, _swscale.get_source_width(),
 		          _swscale.get_source_height(),
 		          ffmpeg::tools::get_pixel_format_name(_swscale.get_source_format()),
@@ -670,13 +810,10 @@ obsffmpeg::encoder::encoder(obs_data_t* settings, obs_encoder_t* encoder, bool i
 		          ffmpeg::tools::get_pixel_format_name(_swscale.get_target_format()),
 		          ffmpeg::tools::get_color_space_name(_swscale.get_target_colorspace()),
 		          _swscale.is_target_full_range() ? "Full" : "Partial");
-		PLOG_INFO("[%s]   Framerate: %ld/%ld (%f FPS)", _codec->name, _context->time_base.den,
-		          _context->time_base.num,
-		          static_cast<double_t>(_context->time_base.den)
-		              / static_cast<double_t>(_context->time_base.num));
-		PLOG_INFO("[%s]   Custom Settings: %s", _codec->name,
-		          obs_data_get_string(settings, ST_FFMPEG_CUSTOMSETTINGS));
 	}
+	PLOG_INFO("[%s]   Framerate: %ld/%ld (%f FPS)", _codec->name, _context->time_base.den, _context->time_base.num,
+	          static_cast<double_t>(_context->time_base.den) / static_cast<double_t>(_context->time_base.num));
+	PLOG_INFO("[%s]   Custom Settings: %s", _codec->name, obs_data_get_string(settings, ST_FFMPEG_CUSTOMSETTINGS));
 
 	// Update settings
 	update(settings);
@@ -689,11 +826,6 @@ obsffmpeg::encoder::encoder(obs_data_t* settings, obs_encoder_t* encoder, bool i
 		     << "' failed with error: " << ffmpeg::tools::get_error_description(res) << " (code " << res << ")";
 		throw std::runtime_error(sstr.str());
 	}
-
-	// Create Frame queue
-	_frame_queue.set_pixel_format(_context->pix_fmt);
-	_frame_queue.set_resolution(_context->width, _context->height);
-	_frame_queue.precache(2);
 }
 
 obsffmpeg::encoder::~encoder()
@@ -715,15 +847,13 @@ obsffmpeg::encoder::~encoder()
 
 	av_packet_unref(&_current_packet);
 
-	_frame_queue.clear();
-	_frame_queue_used.clear();
 	_swscale.finalize();
 }
 
-void obsffmpeg::encoder::get_properties(obs_properties_t* props)
+void obsffmpeg::encoder::get_properties(obs_properties_t* props, bool hw_encode)
 {
 	if (_handler)
-		_handler->get_properties(props, _codec, _context);
+		_handler->get_properties(props, _codec, _context, hw_encode);
 
 	obs_property_set_enabled(obs_properties_get(props, S_KEYFRAMES), false);
 	obs_property_set_enabled(obs_properties_get(props, S_KEYFRAMES_INTERVALTYPE), false);
@@ -737,6 +867,33 @@ void obsffmpeg::encoder::get_properties(obs_properties_t* props)
 
 bool obsffmpeg::encoder::update(obs_data_t* settings)
 {
+	// Settings
+	/// Rate Control
+	_context->strict_std_compliance = static_cast<int>(obs_data_get_int(settings, ST_FFMPEG_STANDARDCOMPLIANCE));
+	_context->debug                 = 0;
+	/// Threading
+	if (_codec->capabilities & (AV_CODEC_CAP_AUTO_THREADS | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS)
+	    && !_hwinst) {
+		if (_codec->capabilities & AV_CODEC_CAP_FRAME_THREADS) {
+			_context->thread_type |= FF_THREAD_FRAME;
+		}
+		if (_codec->capabilities & AV_CODEC_CAP_SLICE_THREADS) {
+			_context->thread_type |= FF_THREAD_SLICE;
+		}
+		int64_t threads = obs_data_get_int(settings, ST_FFMPEG_THREADS);
+		if (threads > 0) {
+			_context->thread_count = static_cast<int>(threads);
+			_lag_in_frames         = _context->thread_count;
+		} else {
+			_context->thread_count = std::thread::hardware_concurrency();
+			_lag_in_frames         = _context->thread_count;
+		}
+	} else {
+		_context->thread_count = 1;
+		_context->thread_type  = 0;
+		_lag_in_frames         = 1;
+	}
+
 	if (_handler)
 		_handler->update(settings, _codec, _context);
 
@@ -765,6 +922,9 @@ bool obsffmpeg::encoder::update(obs_data_t* settings)
 		                       nullptr, "=", ";");
 	}
 
+	if (_handler)
+		_handler->override_lag_in_frames(_lag_in_frames, settings, _codec, _context);
+
 	// Handler Logging
 	if (_handler)
 		_handler->log_options(settings, _codec, _context);
@@ -843,8 +1003,9 @@ static inline void copy_data(encoder_frame* frame, AVFrame* vframe)
 
 bool obsffmpeg::encoder::video_encode(encoder_frame* frame, encoder_packet* packet, bool* received_packet)
 {
+	std::shared_ptr<AVFrame> vframe = pop_free_frame(); // Retrieve an empty frame.
+
 	// Convert frame.
-	std::shared_ptr<AVFrame> vframe = _frame_queue.pop(); // Retrieve an empty frame.
 	{
 #ifdef _DEBUG
 		ScopeProfiler profile("convert");
@@ -874,99 +1035,36 @@ bool obsffmpeg::encoder::video_encode(encoder_frame* frame, encoder_packet* pack
 		}
 	}
 
-	// Send and receive frames.
-	{
-#ifdef _DEBUG
-		ScopeProfiler profile("loop");
-#endif
-
-		bool sent_frame  = false;
-		bool recv_packet = false;
-		bool should_lag  = (_lag_in_frames - _count_send_frames) <= 0;
-
-		auto loop_begin = std::chrono::high_resolution_clock::now();
-		auto loop_end   = loop_begin + std::chrono::milliseconds(50);
-
-		while ((!sent_frame || (should_lag && !recv_packet))
-		       && !(std::chrono::high_resolution_clock::now() > loop_end)) {
-			bool eagain_is_stupid = false;
-
-			if (!sent_frame) {
-#ifdef _DEBUG
-				ScopeProfiler profile_inner("send");
-#endif
-				int res = send_frame(vframe);
-				switch (res) {
-				case 0:
-					sent_frame = true;
-					vframe     = nullptr;
-					break;
-				case AVERROR(EAGAIN):
-					// This means we should call receive_packet again, but what do we do with that data?
-					// Why can't we queue on both? Do I really have to implement threading for this stuff?
-					if (*received_packet == true) {
-						PLOG_WARNING(
-						    "Skipped frame due to EAGAIN when a packet was already returned.");
-						sent_frame = true;
-					}
-					eagain_is_stupid = true;
-					break;
-				case AVERROR(EOF):
-					PLOG_ERROR("Skipped frame due to end of stream.");
-					sent_frame = true;
-					break;
-				default:
-					PLOG_ERROR("Failed to encode frame: %s (%ld).",
-					           ffmpeg::tools::get_error_description(res), res);
-					return false;
-				}
-			}
-
-			if (!recv_packet) {
-#ifdef _DEBUG
-				ScopeProfiler profile_inner("recieve");
-#endif
-				int res = receive_packet(received_packet, packet);
-				switch (res) {
-				case 0:
-					recv_packet = true;
-					break;
-				case AVERROR(EOF):
-					PLOG_ERROR("Received end of file.");
-					recv_packet = true;
-					break;
-				case AVERROR(EAGAIN):
-					if (sent_frame) {
-						recv_packet = true;
-					}
-					if (eagain_is_stupid) {
-						PLOG_ERROR("Both send and recieve returned EAGAIN, encoder is broken.");
-						return false;
-					}
-					break;
-				default:
-					PLOG_ERROR("Failed to receive packet: %s (%ld).",
-					           ffmpeg::tools::get_error_description(res), res);
-					return false;
-				}
-			}
-
-			if (!sent_frame || !recv_packet) {
-				std::this_thread::sleep_for(std::chrono::milliseconds(1));
-			}
-		}
-	}
-
-	if (vframe != nullptr) {
-		_frame_queue.push(vframe);
-	}
+	if (!encode_avframe(vframe, packet, received_packet))
+		return false;
 
 	return true;
 }
 
-bool obsffmpeg::encoder::video_encode_texture(uint32_t, int64_t, uint64_t, uint64_t*, encoder_packet*, bool*)
+bool obsffmpeg::encoder::video_encode_texture(uint32_t handle, int64_t pts, uint64_t lock_key, uint64_t* next_lock_key,
+                                              encoder_packet* packet, bool* received_packet)
 {
-	return false;
+	if (handle == GS_INVALID_HANDLE) {
+		PLOG_ERROR("Received invalid handle.");
+		*next_lock_key = lock_key;
+		return false;
+	}
+
+	std::shared_ptr<AVFrame> vframe = pop_free_frame();
+	_hwinst->copy_from_obs(_context->hw_frames_ctx, handle, lock_key, next_lock_key, vframe);
+
+	vframe->color_range     = _context->color_range;
+	vframe->colorspace      = _context->colorspace;
+	vframe->color_primaries = _context->color_primaries;
+	vframe->color_trc       = _context->color_trc;
+	vframe->pts             = pts;
+
+	if (!encode_avframe(vframe, packet, received_packet))
+		return false;
+
+	*next_lock_key = lock_key;
+
+	return true;
 }
 
 int obsffmpeg::encoder::receive_packet(bool* received_packet, struct encoder_packet* packet)
@@ -974,76 +1072,158 @@ int obsffmpeg::encoder::receive_packet(bool* received_packet, struct encoder_pac
 	av_packet_unref(&_current_packet);
 
 	int res = avcodec_receive_packet(_context, &_current_packet);
-	if (res == 0) {
-		if (!_have_first_frame) {
-			if (_codec->id == AV_CODEC_ID_H264) {
-				uint8_t* tmp_packet;
-				uint8_t* tmp_header;
-				uint8_t* tmp_sei;
-				size_t   sz_packet, sz_header, sz_sei;
-
-				obs_extract_avc_headers(_current_packet.data, _current_packet.size, &tmp_packet,
-				                        &sz_packet, &tmp_header, &sz_header, &tmp_sei, &sz_sei);
-
-				if (sz_header) {
-					_extra_data.resize(sz_header);
-					std::memcpy(_extra_data.data(), tmp_header, sz_header);
-				}
-
-				if (sz_sei) {
-					_sei_data.resize(sz_sei);
-					std::memcpy(_sei_data.data(), tmp_sei, sz_sei);
-				}
-
-				// Not required, we only need the Extra Data and SEI Data anyway.
-				//std::memcpy(_current_packet.data, tmp_packet, sz_packet);
-				//_current_packet.size = static_cast<int>(sz_packet);
-
-				bfree(tmp_packet);
-				bfree(tmp_header);
-				bfree(tmp_sei);
-			} else if (_codec->id == AV_CODEC_ID_HEVC) {
-				obsffmpeg::codecs::hevc::extract_header_sei(_current_packet.data, _current_packet.size,
-				                                            _extra_data, _sei_data);
-			} else if (_context->extradata != nullptr) {
-				_extra_data.resize(_context->extradata_size);
-				std::memcpy(_extra_data.data(), _context->extradata, _context->extradata_size);
-			}
-			_have_first_frame = true;
-		}
-
-		// Allow Handler Post-Processing
-		if (_handler)
-			_handler->process_avpacket(_current_packet, _codec, _context);
-
-		packet->type          = OBS_ENCODER_VIDEO;
-		packet->pts           = _current_packet.pts;
-		packet->dts           = _current_packet.dts;
-		packet->data          = _current_packet.data;
-		packet->size          = _current_packet.size;
-		packet->keyframe      = !!(_current_packet.flags & AV_PKT_FLAG_KEY);
-		packet->drop_priority = packet->keyframe ? 0 : 1;
-		*received_packet      = true;
-
-		{
-			std::shared_ptr<AVFrame> uframe = _frame_queue_used.pop_only();
-			_frame_queue.push(uframe);
-		}
+	if (res != 0) {
+		return res;
 	}
 
+	if (!_have_first_frame) {
+		if (_codec->id == AV_CODEC_ID_H264) {
+			uint8_t* tmp_packet;
+			uint8_t* tmp_header;
+			uint8_t* tmp_sei;
+			size_t   sz_packet, sz_header, sz_sei;
+
+			obs_extract_avc_headers(_current_packet.data, _current_packet.size, &tmp_packet, &sz_packet,
+			                        &tmp_header, &sz_header, &tmp_sei, &sz_sei);
+
+			if (sz_header) {
+				_extra_data.resize(sz_header);
+				std::memcpy(_extra_data.data(), tmp_header, sz_header);
+			}
+
+			if (sz_sei) {
+				_sei_data.resize(sz_sei);
+				std::memcpy(_sei_data.data(), tmp_sei, sz_sei);
+			}
+
+			// Not required, we only need the Extra Data and SEI Data anyway.
+			//std::memcpy(_current_packet.data, tmp_packet, sz_packet);
+			//_current_packet.size = static_cast<int>(sz_packet);
+
+			bfree(tmp_packet);
+			bfree(tmp_header);
+			bfree(tmp_sei);
+		} else if (_codec->id == AV_CODEC_ID_HEVC) {
+			obsffmpeg::codecs::hevc::extract_header_sei(_current_packet.data, _current_packet.size,
+			                                            _extra_data, _sei_data);
+		} else if (_context->extradata != nullptr) {
+			_extra_data.resize(_context->extradata_size);
+			std::memcpy(_extra_data.data(), _context->extradata, _context->extradata_size);
+		}
+		_have_first_frame = true;
+	}
+
+	// Allow Handler Post-Processing
+	if (_handler)
+		_handler->process_avpacket(_current_packet, _codec, _context);
+
+	packet->type          = OBS_ENCODER_VIDEO;
+	packet->pts           = _current_packet.pts;
+	packet->dts           = _current_packet.dts;
+	packet->data          = _current_packet.data;
+	packet->size          = _current_packet.size;
+	packet->keyframe      = !!(_current_packet.flags & AV_PKT_FLAG_KEY);
+	packet->drop_priority = packet->keyframe ? 0 : 1;
+	*received_packet      = true;
+
+	push_free_frame(pop_used_frame());
+
 	return res;
 }
 
 int obsffmpeg::encoder::send_frame(std::shared_ptr<AVFrame> const frame)
 {
 	int res = avcodec_send_frame(_context, frame.get());
-	switch (res) {
-	case 0:
-		_frame_queue_used.push(frame);
-		_count_send_frames++;
-	case AVERROR(EAGAIN):
-	case AVERROR(EOF):
-		break;
+	if (res == 0) {
+		push_used_frame(frame);
 	}
+
 	return res;
 }
+
+bool obsffmpeg::encoder::encode_avframe(std::shared_ptr<AVFrame> frame, encoder_packet* packet, bool* received_packet)
+{
+#ifdef _DEBUG
+	ScopeProfiler profile("loop");
+#endif
+
+	bool sent_frame  = false;
+	bool recv_packet = false;
+	bool should_lag  = (_count_send_frames >= _lag_in_frames);
+
+	auto loop_begin = std::chrono::high_resolution_clock::now();
+	auto loop_end   = loop_begin + std::chrono::milliseconds(50);
+
+	while ((!sent_frame || (should_lag && !recv_packet))
+	       && !(std::chrono::high_resolution_clock::now() > loop_end)) {
+		bool eagain_is_stupid = false;
+
+		if (!sent_frame) {
+#ifdef _DEBUG
+			ScopeProfiler profile_inner("send");
+#endif
+			int res = send_frame(frame);
+			switch (res) {
+			case 0:
+				sent_frame = true;
+				frame      = nullptr;
+				break;
+			case AVERROR(EAGAIN):
+				// This means we should call receive_packet again, but what do we do with that data?
+				// Why can't we queue on both? Do I really have to implement threading for this stuff?
+				if (*received_packet == true) {
+					PLOG_WARNING("Skipped frame due to EAGAIN when a packet was already returned.");
+					sent_frame = true;
+				}
+				eagain_is_stupid = true;
+				break;
+			case AVERROR(EOF):
+				PLOG_ERROR("Skipped frame due to end of stream.");
+				sent_frame = true;
+				break;
+			default:
+				PLOG_ERROR("Failed to encode frame: %s (%ld).",
+				           ffmpeg::tools::get_error_description(res), res);
+				return false;
+			}
+		}
+
+		if (!recv_packet) {
+#ifdef _DEBUG
+			ScopeProfiler profile_inner("recieve");
+#endif
+			int res = receive_packet(received_packet, packet);
+			switch (res) {
+			case 0:
+				recv_packet = true;
+				break;
+			case AVERROR(EOF):
+				PLOG_ERROR("Received end of file.");
+				recv_packet = true;
+				break;
+			case AVERROR(EAGAIN):
+				if (sent_frame) {
+					recv_packet = true;
+				}
+				if (eagain_is_stupid) {
+					PLOG_ERROR("Both send and recieve returned EAGAIN, encoder is broken.");
+					return false;
+				}
+				break;
+			default:
+				PLOG_ERROR("Failed to receive packet: %s (%ld).",
+				           ffmpeg::tools::get_error_description(res), res);
+				return false;
+			}
+		}
+
+		if (!sent_frame || !recv_packet) {
+			std::this_thread::sleep_for(std::chrono::milliseconds(1));
+		}
+	}
+
+	if (!sent_frame)
+		push_free_frame(frame);
+
+	return true;
+}

source/encoder.hpp

@@ -23,10 +23,13 @@
 
 #include <condition_variable>
 #include <mutex>
+#include <queue>
+#include <stack>
 #include <thread>
 #include <vector>
 #include "ffmpeg/avframe-queue.hpp"
 #include "ffmpeg/swscale.hpp"
+#include "hwapi/base.hpp"
 #include "ui/handler.hpp"
 
 extern "C" {
@@ -49,7 +52,7 @@ namespace obsffmpeg {
 		std::string      uid;
 		std::string      codec;
 		std::string      readable_name;
-		obs_encoder_info oei;
+		obs_encoder_info oei = {0};
 	};
 
 	class encoder_factory {
@@ -65,9 +68,9 @@ namespace obsffmpeg {
 
 		void register_encoder();
 
-		void get_defaults(obs_data_t* settings);
+		void get_defaults(obs_data_t* settings, bool hw_encoder = false);
 
-		void get_properties(obs_properties_t* props);
+		void get_properties(obs_properties_t* props, bool hw_encoder = false);
 
 		const AVCodec* get_avcodec();
 
@@ -85,26 +88,41 @@ namespace obsffmpeg {
 
 		std::shared_ptr<obsffmpeg::ui::handler> _handler;
 
-		ffmpeg::avframe_queue _frame_queue;
-		ffmpeg::avframe_queue _frame_queue_used;
-		ffmpeg::swscale       _swscale;
-		AVPacket              _current_packet;
+		std::shared_ptr<obsffmpeg::hwapi::base>     _hwapi;
+		std::shared_ptr<obsffmpeg::hwapi::instance> _hwinst;
 
-		int64_t _lag_in_frames;
-		int64_t _count_send_frames;
+		ffmpeg::swscale _swscale;
+		AVPacket        _current_packet;
+
+		size_t _lag_in_frames;
+		size_t _count_send_frames;
 
 		// Extra Data
 		bool                 _have_first_frame;
 		std::vector<uint8_t> _extra_data;
 		std::vector<uint8_t> _sei_data;
 
+		// Frame Stack and Queue
+		std::stack<std::shared_ptr<AVFrame>>           _free_frames;
+		std::queue<std::shared_ptr<AVFrame>>           _used_frames;
+		std::chrono::high_resolution_clock::time_point _free_frames_last_used;
+
+		void initialize_sw(obs_data_t* settings);
+		void initialize_hw(obs_data_t* settings);
+
+		void                     push_free_frame(std::shared_ptr<AVFrame> frame);
+		std::shared_ptr<AVFrame> pop_free_frame();
+
+		void                     push_used_frame(std::shared_ptr<AVFrame> frame);
+		std::shared_ptr<AVFrame> pop_used_frame();
+
 		public:
 		encoder(obs_data_t* settings, obs_encoder_t* encoder, bool is_texture_encode = false);
 		virtual ~encoder();
 
 		public: // OBS API
 		// Shared
-		void get_properties(obs_properties_t* props);
+		void get_properties(obs_properties_t* props, bool hw_encode = false);
 
 		bool update(obs_data_t* settings);
 
@@ -130,5 +148,8 @@ namespace obsffmpeg {
 		int receive_packet(bool* received_packet, struct encoder_packet* packet);
 
 		int send_frame(std::shared_ptr<AVFrame> frame);
+
+		bool encode_avframe(std::shared_ptr<AVFrame> frame, struct encoder_packet* packet,
+		                    bool* received_packet);
 	};
 } // namespace obsffmpeg

source/hwapi/base.cpp

@@ -0,0 +1,22 @@
+// FFMPEG Video Encoder Integration for OBS Studio
+// Copyright (c) 2019 Michael Fabian Dirks <info@xaymar.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#include "base.hpp"

source/hwapi/base.hpp

@@ -0,0 +1,68 @@
+// FFMPEG Video Encoder Integration for OBS Studio
+// Copyright (c) 2019 Michael Fabian Dirks <info@xaymar.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#pragma once
+
+#include <cinttypes>
+#include <list>
+#include <memory>
+#include <string>
+#include <utility>
+
+extern "C" {
+#pragma warning(push)
+#pragma warning(disable : 4244)
+#include <libavutil/frame.h>
+#include <libavutil/hwcontext.h>
+#pragma warning(pop)
+}
+
+namespace obsffmpeg {
+	namespace hwapi {
+		struct device {
+			std::pair<int64_t, int64_t> id;
+			std::string                 name;
+		};
+
+		class instance;
+
+		class base {
+			public:
+			virtual std::list<obsffmpeg::hwapi::device> enumerate_adapters() = 0;
+
+			virtual std::shared_ptr<obsffmpeg::hwapi::instance> create(obsffmpeg::hwapi::device target) = 0;
+		};
+
+		class instance {
+			public:
+			virtual AVBufferRef* create_device_context() = 0;
+
+			virtual std::shared_ptr<AVFrame> allocate_frame(AVBufferRef* frames) = 0;
+
+			virtual void copy_from_obs(AVBufferRef* frames, uint32_t handle, uint64_t lock_key,
+			                           uint64_t* next_lock_key, std::shared_ptr<AVFrame> frame) = 0;
+
+			virtual std::shared_ptr<AVFrame> avframe_from_obs(AVBufferRef* frames, uint32_t handle,
+			                                                  uint64_t  lock_key,
+			                                                  uint64_t* next_lock_key) = 0;
+		};
+	} // namespace hwapi
+} // namespace obsffmpeg

source/hwapi/d3d11.cpp

@@ -0,0 +1,217 @@
+// FFMPEG Video Encoder Integration for OBS Studio
+// Copyright (c) 2019 Michael Fabian Dirks <info@xaymar.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#include "d3d11.hpp"
+#include <sstream>
+#include <vector>
+
+extern "C" {
+#pragma warning(push)
+#pragma warning(disable : 4244)
+#include <libavutil/hwcontext_d3d11va.h>
+#pragma warning(pop)
+}
+
+obsffmpeg::hwapi::d3d11::d3d11() : _dxgi_module(0), _d3d11_module(0)
+{
+	_dxgi_module = LoadLibraryW(L"dxgi.dll");
+	if (!_dxgi_module)
+		throw std::runtime_error("Unable to load DXGI");
+
+	_d3d11_module = LoadLibraryW(L"d3d11.dll");
+	if (!_d3d11_module)
+		throw std::runtime_error("Unable to load D3D11");
+
+	_CreateDXGIFactory = reinterpret_cast<CreateDXGIFactory_t>(GetProcAddress(_dxgi_module, "CreateDXGIFactory"));
+	_CreateDXGIFactory1 =
+	    reinterpret_cast<CreateDXGIFactory1_t>(GetProcAddress(_dxgi_module, "CreateDXGIFactory1"));
+	_D3D11CreateDevice = reinterpret_cast<D3D11CreateDevice_t>(GetProcAddress(_d3d11_module, "D3D11CreateDevice"));
+
+	if (!_CreateDXGIFactory && !_CreateDXGIFactory1)
+		throw std::runtime_error("DXGI not supported");
+
+	if (!_D3D11CreateDevice)
+		throw std::runtime_error("D3D11 not supported");
+
+	HRESULT hr = _CreateDXGIFactory1(__uuidof(IDXGIFactory1), (void**)&_dxgifactory);
+	if (FAILED(hr)) {
+		std::stringstream sstr;
+		sstr << "Failed to create DXGI Factory (" << hr << ")";
+		throw std::runtime_error(sstr.str());
+	}
+}
+
+obsffmpeg::hwapi::d3d11::~d3d11()
+{
+	FreeLibrary(_dxgi_module);
+	FreeLibrary(_d3d11_module);
+}
+
+std::list<obsffmpeg::hwapi::device> obsffmpeg::hwapi::d3d11::enumerate_adapters()
+{
+	std::list<device> adapters;
+
+	// Enumerate Adapters
+	IDXGIAdapter1* dxgi_adapter = nullptr;
+	for (UINT idx = 0; !FAILED(_dxgifactory->EnumAdapters1(idx, &dxgi_adapter)); idx++) {
+		DXGI_ADAPTER_DESC1 desc = DXGI_ADAPTER_DESC1();
+		dxgi_adapter->GetDesc1(&desc);
+
+		std::vector<char> buf(1024);
+		size_t            len = snprintf(buf.data(), buf.size(), "%ls (VEN_%04x/DEV_%04x/SUB_%04x/REV_%04x)",
+                                      desc.Description, desc.VendorId, desc.DeviceId, desc.SubSysId, desc.Revision);
+
+		device dev;
+		dev.name      = std::string(buf.data(), buf.data() + len);
+		dev.id.first  = desc.AdapterLuid.HighPart;
+		dev.id.second = desc.AdapterLuid.LowPart;
+
+		adapters.push_back(dev);
+	}
+
+	return std::move(adapters);
+}
+
+std::shared_ptr<obsffmpeg::hwapi::instance> obsffmpeg::hwapi::d3d11::create(obsffmpeg::hwapi::device target)
+{
+	std::shared_ptr<d3d11_instance>   inst;
+	ATL::CComPtr<ID3D11Device>        device;
+	ATL::CComPtr<ID3D11DeviceContext> context;
+	IDXGIAdapter1*                    adapter = nullptr;
+
+	// Find the correct "Adapter" (device).
+	IDXGIAdapter1* dxgi_adapter = nullptr;
+	for (UINT idx = 0; !FAILED(_dxgifactory->EnumAdapters1(idx, &dxgi_adapter)); idx++) {
+		DXGI_ADAPTER_DESC1 desc = DXGI_ADAPTER_DESC1();
+		dxgi_adapter->GetDesc1(&desc);
+
+		if ((desc.AdapterLuid.LowPart == target.id.second) && (desc.AdapterLuid.HighPart == target.id.first)) {
+			adapter = dxgi_adapter;
+			break;
+		}
+	}
+
+	// Create a D3D11 Device
+	UINT                           device_flags   = D3D11_CREATE_DEVICE_VIDEO_SUPPORT;
+	std::vector<D3D_FEATURE_LEVEL> feature_levels = {D3D_FEATURE_LEVEL_12_1, D3D_FEATURE_LEVEL_12_0,
+	                                                 D3D_FEATURE_LEVEL_11_1};
+
+	if (FAILED(_D3D11CreateDevice(adapter, D3D_DRIVER_TYPE_HARDWARE, NULL, device_flags, feature_levels.data(),
+	                              static_cast<UINT>(feature_levels.size()), D3D11_SDK_VERSION, &device, NULL,
+	                              &context))) {
+		throw std::runtime_error("Failed to create D3D11 device for target.");
+	}
+
+	return std::make_shared<d3d11_instance>(device, context);
+}
+
+struct D3D11AVFrame {
+	ATL::CComPtr<ID3D11Texture2D> handle;
+};
+
+obsffmpeg::hwapi::d3d11_instance::d3d11_instance(ATL::CComPtr<ID3D11Device>        device,
+                                                 ATL::CComPtr<ID3D11DeviceContext> context)
+{
+	_device  = device;
+	_context = context;
+}
+
+obsffmpeg::hwapi::d3d11_instance::~d3d11_instance() {}
+
+AVBufferRef* obsffmpeg::hwapi::d3d11_instance::create_device_context()
+{
+	AVBufferRef* dctx_ref = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_D3D11VA);
+	if (!dctx_ref)
+		throw std::runtime_error("Failed to allocate AVHWDeviceContext.");
+
+	AVHWDeviceContext*      dctx    = reinterpret_cast<AVHWDeviceContext*>(dctx_ref->data);
+	AVD3D11VADeviceContext* d3d11va = reinterpret_cast<AVD3D11VADeviceContext*>(dctx->hwctx);
+
+	// TODO: Determine if these need an additional reference.
+	d3d11va->device = _device;
+	d3d11va->device->AddRef();
+	d3d11va->device_context = _context;
+	d3d11va->device_context->AddRef();
+
+	if (av_hwdevice_ctx_init(dctx_ref) < 0)
+		throw std::runtime_error("Failed to initialize AVHWDeviceContext.");
+
+	return dctx_ref;
+}
+
+std::shared_ptr<AVFrame> obsffmpeg::hwapi::d3d11_instance::allocate_frame(AVBufferRef* frames)
+{
+	auto frame = std::shared_ptr<AVFrame>(av_frame_alloc(), [](AVFrame* frame) {
+		av_frame_unref(frame);
+		av_frame_free(&frame);
+	});
+
+	if (av_hwframe_get_buffer(frames, frame.get(), 0) < 0) {
+		throw std::runtime_error("Failed to create AVFrame.");
+	}
+
+	return frame;
+}
+
+void obsffmpeg::hwapi::d3d11_instance::copy_from_obs(AVBufferRef*, uint32_t handle, uint64_t lock_key,
+                                                     uint64_t* next_lock_key, std::shared_ptr<AVFrame> frame)
+{
+	ATL::CComPtr<IDXGIKeyedMutex> mutex;
+	ATL::CComPtr<ID3D11Texture2D> input;
+
+	if (FAILED(_device->OpenSharedResource(reinterpret_cast<HANDLE>(static_cast<uintptr_t>(handle)),
+	                                       __uuidof(ID3D11Texture2D), reinterpret_cast<void**>(&input)))) {
+		throw std::runtime_error("Failed to open shared texture resource.");
+	}
+
+	if (FAILED(input->QueryInterface(__uuidof(IDXGIKeyedMutex), reinterpret_cast<void**>(&mutex)))) {
+		throw std::runtime_error("Failed to retrieve mutex for texture resource.");
+	}
+
+	if (FAILED(mutex->AcquireSync(lock_key, 1000))) {
+		throw std::runtime_error("Failed to acquire lock on input texture.");
+	}
+
+	// Set some parameters on the input texture, and get its description.
+	UINT evict = input->GetEvictionPriority();
+	input->SetEvictionPriority(DXGI_RESOURCE_PRIORITY_MAXIMUM);
+
+	// Clone the content of the input texture.
+	_context->CopyResource(reinterpret_cast<ID3D11Texture2D*>(frame->data[0]), input);
+
+	// Restore original parameters on input.
+	input->SetEvictionPriority(evict);
+
+	if (FAILED(mutex->ReleaseSync(lock_key))) {
+		throw std::runtime_error("Failed to release lock on input texture.");
+	}
+
+	// TODO: Determine if this is necessary.
+	mutex->ReleaseSync(*next_lock_key);
+}
+
+std::shared_ptr<AVFrame> obsffmpeg::hwapi::d3d11_instance::avframe_from_obs(AVBufferRef* frames, uint32_t handle,
+                                                                            uint64_t lock_key, uint64_t* next_lock_key)
+{
+	auto frame = this->allocate_frame(frames);
+	this->copy_from_obs(frames, handle, lock_key, next_lock_key, frame);
+	return frame;
+}

source/hwapi/d3d11.hpp

@@ -0,0 +1,78 @@
+// FFMPEG Video Encoder Integration for OBS Studio
+// Copyright (c) 2019 Michael Fabian Dirks <info@xaymar.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#include <atlutil.h>
+#include <d3d11.h>
+#include <d3d11_1.h>
+#include <dxgi.h>
+#include "base.hpp"
+
+namespace obsffmpeg {
+	namespace hwapi {
+		class d3d11 : public ::obsffmpeg::hwapi::base {
+			typedef HRESULT(__stdcall* CreateDXGIFactory_t)(REFIID, void**);
+			typedef HRESULT(__stdcall* CreateDXGIFactory1_t)(REFIID, void**);
+			typedef HRESULT(__stdcall* D3D11CreateDevice_t)(_In_opt_ IDXGIAdapter*, D3D_DRIVER_TYPE,
+			                                                HMODULE, UINT, CONST D3D_FEATURE_LEVEL*, UINT,
+			                                                UINT, _Out_opt_ ID3D11Device**,
+			                                                _Out_opt_ D3D_FEATURE_LEVEL*,
+			                                                _Out_opt_ ID3D11DeviceContext**);
+
+			HMODULE              _dxgi_module;
+			CreateDXGIFactory_t  _CreateDXGIFactory;
+			CreateDXGIFactory1_t _CreateDXGIFactory1;
+
+			HMODULE             _d3d11_module;
+			D3D11CreateDevice_t _D3D11CreateDevice;
+
+			ATL::CComPtr<IDXGIFactory1> _dxgifactory;
+
+			public:
+			d3d11();
+			virtual ~d3d11();
+
+			virtual std::list<obsffmpeg::hwapi::device> enumerate_adapters() override;
+
+			virtual std::shared_ptr<obsffmpeg::hwapi::instance>
+			    create(obsffmpeg::hwapi::device target) override;
+		};
+
+		class d3d11_instance : public ::obsffmpeg::hwapi::instance {
+			ATL::CComPtr<ID3D11Device>        _device;
+			ATL::CComPtr<ID3D11DeviceContext> _context;
+
+			public:
+			d3d11_instance(ATL::CComPtr<ID3D11Device> device, ATL::CComPtr<ID3D11DeviceContext> context);
+			virtual ~d3d11_instance();
+
+			virtual AVBufferRef* create_device_context() override;
+
+			virtual std::shared_ptr<AVFrame> allocate_frame(AVBufferRef* frames) override;
+
+			virtual void copy_from_obs(AVBufferRef* frames, uint32_t handle, uint64_t lock_key,
+			                           uint64_t* next_lock_key, std::shared_ptr<AVFrame> frame) override;
+
+			virtual std::shared_ptr<AVFrame> avframe_from_obs(AVBufferRef* frames, uint32_t handle,
+			                                                  uint64_t  lock_key,
+			                                                  uint64_t* next_lock_key) override;
+		};
+	} // namespace hwapi
+} // namespace obsffmpeg

source/ui/debug_handler.cpp

@@ -35,7 +35,7 @@ extern "C" {
 #pragma warning(pop)
 }
 
-void obsffmpeg::ui::debug_handler::get_defaults(obs_data_t*, const AVCodec*, AVCodecContext*) {}
+void obsffmpeg::ui::debug_handler::get_defaults(obs_data_t*, const AVCodec*, AVCodecContext*, bool) {}
 
 template<typename T>
 std::string to_string(T value){};
@@ -64,7 +64,8 @@ std::string to_string(double_t value)
 	return std::string(buf.data(), buf.data() + buf.size());
 }
 
-void obsffmpeg::ui::debug_handler::get_properties(obs_properties_t*, const AVCodec* codec, AVCodecContext* context)
+void obsffmpeg::ui::debug_handler::get_properties(obs_properties_t*, const AVCodec* codec, AVCodecContext* context,
+                                                  bool)
 {
 	if (context)
 		return;

source/ui/debug_handler.hpp

@@ -26,11 +26,11 @@ namespace obsffmpeg {
 	namespace ui {
 		class debug_handler : public handler {
 			public:
-			virtual void get_defaults(obs_data_t* settings, const AVCodec* codec,
-			                          AVCodecContext* context) override;
+			virtual void get_defaults(obs_data_t* settings, const AVCodec* codec, AVCodecContext* context,
+			                          bool hw_encode) override;
 
 			virtual void get_properties(obs_properties_t* props, const AVCodec* codec,
-			                            AVCodecContext* context) override;
+			                            AVCodecContext* context, bool hw_encode) override;
 
 			virtual void update(obs_data_t* settings, const AVCodec* codec,
 			                    AVCodecContext* context) override;

source/ui/handler.cpp

@@ -23,28 +23,31 @@
 
 void obsffmpeg::ui::handler::override_visible_name(const AVCodec*, std::string&) {}
 
-void obsffmpeg::ui::handler::override_info(obs_encoder_info* main, obs_encoder_info* fallback) {}
+void obsffmpeg::ui::handler::override_info(obs_encoder_info*, obs_encoder_info*) {}
 
-void obsffmpeg::ui::handler::override_colorformat(AVPixelFormat& target_format, obs_data_t* settings,
-                                                  const AVCodec* codec, AVCodecContext* context)
-{}
+void obsffmpeg::ui::handler::override_colorformat(AVPixelFormat&, obs_data_t*, const AVCodec*, AVCodecContext*) {}
 
-void obsffmpeg::ui::handler::get_defaults(obs_data_t* settings, const AVCodec* codec, AVCodecContext* context) {}
+void obsffmpeg::ui::handler::override_lag_in_frames(size_t&, obs_data_t*, const AVCodec*, AVCodecContext*) {}
 
-void obsffmpeg::ui::handler::get_properties(obs_properties_t* props, const AVCodec* codec, AVCodecContext* context) {}
+void obsffmpeg::ui::handler::get_defaults(obs_data_t*, const AVCodec*, AVCodecContext*, bool) {}
 
-void obsffmpeg::ui::handler::update(obs_data_t* settings, const AVCodec* codec, AVCodecContext* context) {}
+void obsffmpeg::ui::handler::get_properties(obs_properties_t*, const AVCodec*, AVCodecContext*, bool) {}
 
-void obsffmpeg::ui::handler::log_options(obs_data_t* settings, const AVCodec* codec, AVCodecContext* context) {}
+obsffmpeg::hwapi::device obsffmpeg::ui::handler::find_hw_device(std::shared_ptr<obsffmpeg::hwapi::base>, const AVCodec*,
+                                                                AVCodecContext*)
+{
+	return obsffmpeg::hwapi::device();
+}
 
-void obsffmpeg::ui::handler::import_from_ffmpeg(const std::string ffmpeg, obs_data_t* settings, const AVCodec* codec,
-                                                AVCodecContext* context)
-{}
+void obsffmpeg::ui::handler::update(obs_data_t*, const AVCodec*, AVCodecContext*) {}
 
-std::string obsffmpeg::ui::handler::export_for_ffmpeg(obs_data_t* settings, const AVCodec* codec,
-                                                      AVCodecContext* context)
+void obsffmpeg::ui::handler::log_options(obs_data_t*, const AVCodec*, AVCodecContext*) {}
+
+void obsffmpeg::ui::handler::import_from_ffmpeg(const std::string, obs_data_t*, const AVCodec*, AVCodecContext*) {}
+
+std::string obsffmpeg::ui::handler::export_for_ffmpeg(obs_data_t*, const AVCodec*, AVCodecContext*)
 {
 	return std::string();
 }
 
-void obsffmpeg::ui::handler::process_avpacket(AVPacket& packet, const AVCodec* codec, AVCodecContext* context) {}
+void obsffmpeg::ui::handler::process_avpacket(AVPacket&, const AVCodec*, AVCodecContext*) {}

source/ui/handler.hpp

@@ -22,6 +22,7 @@
 #pragma once
 
 #include <string>
+#include "hwapi/base.hpp"
 
 extern "C" {
 #include <obs.h>
@@ -46,10 +47,16 @@ namespace obsffmpeg {
 			virtual void override_colorformat(AVPixelFormat& target_format, obs_data_t* settings,
 			                                  const AVCodec* codec, AVCodecContext* context);
 
-			virtual void get_defaults(obs_data_t* settings, const AVCodec* codec, AVCodecContext* context);
+			virtual void override_lag_in_frames(size_t& lag, obs_data_t* settings, const AVCodec* codec,
+			                                       AVCodecContext* context);
+
+			virtual void get_defaults(obs_data_t* settings, const AVCodec* codec, AVCodecContext* context, bool hw_encode);
 
 			virtual void get_properties(obs_properties_t* props, const AVCodec* codec,
-			                            AVCodecContext* context);
+			                            AVCodecContext* context, bool hw_encode);
+
+			virtual obsffmpeg::hwapi::device find_hw_device(std::shared_ptr<obsffmpeg::hwapi::base> api,
+			                                                const AVCodec* codec, AVCodecContext* context);
 
 			virtual void update(obs_data_t* settings, const AVCodec* codec, AVCodecContext* context);
 

source/ui/nvenc_h264_handler.cpp

@@ -85,8 +85,14 @@ void obsffmpeg::ui::nvenc_h264_handler::override_visible_name(const AVCodec*, st
 	name = "H.264/AVC Encoder (NVidia NVENC)";
 }
 
+void obsffmpeg::ui::nvenc_h264_handler::override_lag_in_frames(size_t& lag, obs_data_t* settings, const AVCodec* codec,
+                                                               AVCodecContext* context)
+{
+	nvenc::override_lag_in_frames(lag, settings, codec, context);
+}
+
 void obsffmpeg::ui::nvenc_h264_handler::get_defaults(obs_data_t* settings, const AVCodec* codec,
-                                                     AVCodecContext* context)
+                                                     AVCodecContext* context, bool)
 {
 	nvenc::get_defaults(settings, codec, context);
 
@@ -95,7 +101,7 @@ void obsffmpeg::ui::nvenc_h264_handler::get_defaults(obs_data_t* settings, const
 }
 
 void obsffmpeg::ui::nvenc_h264_handler::get_properties(obs_properties_t* props, const AVCodec* codec,
-                                                       AVCodecContext* context)
+                                                       AVCodecContext* context, bool)
 {
 	if (!context) {
 		this->get_encoder_properties(props, codec);

source/ui/nvenc_h264_handler.hpp

@@ -36,11 +36,14 @@ namespace obsffmpeg {
 			public:
 			virtual void override_visible_name(const AVCodec* codec, std::string& name) override;
 
-			virtual void get_defaults(obs_data_t* settings, const AVCodec* codec,
-			                          AVCodecContext* context) override;
+			virtual void override_lag_in_frames(size_t& lag, obs_data_t* settings, const AVCodec* codec,
+			                                    AVCodecContext* context) override;
+
+			virtual void get_defaults(obs_data_t* settings, const AVCodec* codec, AVCodecContext* context,
+			                          bool hw_encode) override;
 
 			virtual void get_properties(obs_properties_t* props, const AVCodec* codec,
-			                            AVCodecContext* context) override;
+			                            AVCodecContext* context, bool hw_encode) override;
 
 			virtual void update(obs_data_t* settings, const AVCodec* codec,
 			                    AVCodecContext* context) override;

source/ui/nvenc_hevc_handler.cpp

@@ -87,8 +87,14 @@ void obsffmpeg::ui::nvenc_hevc_handler::override_visible_name(const AVCodec*, st
 	name = "H.265/HEVC Encoder (NVidia NVENC)";
 }
 
+void obsffmpeg::ui::nvenc_hevc_handler::override_lag_in_frames(size_t& lag, obs_data_t* settings, const AVCodec* codec,
+                                                               AVCodecContext* context)
+{
+	nvenc::override_lag_in_frames(lag, settings, codec, context);
+}
+
 void obsffmpeg::ui::nvenc_hevc_handler::get_defaults(obs_data_t* settings, const AVCodec* codec,
-                                                     AVCodecContext* context)
+                                                     AVCodecContext* context, bool)
 {
 	nvenc::get_defaults(settings, codec, context);
 
@@ -98,7 +104,7 @@ void obsffmpeg::ui::nvenc_hevc_handler::get_defaults(obs_data_t* settings, const
 }
 
 void obsffmpeg::ui::nvenc_hevc_handler::get_properties(obs_properties_t* props, const AVCodec* codec,
-                                                       AVCodecContext* context)
+                                                       AVCodecContext* context, bool)
 {
 	if (!context) {
 		this->get_encoder_properties(props, codec);

source/ui/nvenc_hevc_handler.hpp

@@ -36,11 +36,14 @@ namespace obsffmpeg {
 			public:
 			virtual void override_visible_name(const AVCodec* codec, std::string& name) override;
 
-			virtual void get_defaults(obs_data_t* settings, const AVCodec* codec,
-			                          AVCodecContext* context) override;
+			virtual void override_lag_in_frames(size_t& lag, obs_data_t* settings, const AVCodec* codec,
+			                                    AVCodecContext* context) override;
+
+			virtual void get_defaults(obs_data_t* settings, const AVCodec* codec, AVCodecContext* context,
+			                          bool hw_encode) override;
 
 			virtual void get_properties(obs_properties_t* props, const AVCodec* codec,
-			                            AVCodecContext* context) override;
+			                            AVCodecContext* context, bool hw_encode) override;
 
 			virtual void update(obs_data_t* settings, const AVCodec* codec,
 			                    AVCodecContext* context) override;

source/ui/nvenc_shared.cpp

@@ -131,6 +131,17 @@ std::map<b_ref_mode, std::string> obsffmpeg::nvenc::b_ref_mode_to_opt{
     {b_ref_mode::MIDDLE, "middle"},
 };
 
+void obsffmpeg::nvenc::override_lag_in_frames(size_t& lag, obs_data_t*, const AVCodec*,
+                                              AVCodecContext* context)
+{
+	// With NVENC, the number of frames lagged before we get our first
+	// packet is determined by the number of b-frames. Threads, lookahead
+	// frames and various other settings are ignored.
+	// The minimum number of lagged frames is 1.
+
+	lag = 1ull + static_cast<size_t>(context->max_b_frames);
+}
+
 void obsffmpeg::nvenc::get_defaults(obs_data_t* settings, const AVCodec*, AVCodecContext*)
 {
 	obs_data_set_default_int(settings, ST_PRESET, static_cast<int64_t>(preset::DEFAULT));
@@ -678,7 +689,7 @@ void obsffmpeg::nvenc::log_options(obs_data_t* settings, const AVCodec* codec, A
 	bool     cfg_rc_quality     = obs_data_get_bool(settings, ST_RATECONTROL_QUALITY);
 	int64_t  cfg_rc_quality_min = obs_data_get_int(settings, ST_RATECONTROL_QUALITY_MINIMUM);
 	int64_t  cfg_rc_quality_max = obs_data_get_int(settings, ST_RATECONTROL_QUALITY_MAXIMUM);
-	double_t cfg_rc_quality_tgt = obs_data_get_int(settings, ST_RATECONTROL_QUALITY_TARGET);
+	double_t cfg_rc_quality_tgt = obs_data_get_double(settings, ST_RATECONTROL_QUALITY_TARGET) / 100.0 * 51.0;
 	int64_t  cfg_rc_qp_i        = obs_data_get_int(settings, ST_RATECONTROL_QP_I);
 	int64_t  cfg_rc_qp_p        = obs_data_get_int(settings, ST_RATECONTROL_QP_P);
 	int64_t  cfg_rc_qp_b        = obs_data_get_int(settings, ST_RATECONTROL_QP_B);

source/ui/nvenc_shared.hpp

@@ -75,6 +75,9 @@ namespace obsffmpeg {
 
 		extern std::map<b_ref_mode, std::string> b_ref_mode_to_opt;
 
+		void override_lag_in_frames(size_t& lag, obs_data_t* settings, const AVCodec* codec,
+		                            AVCodecContext* context);
+
 		void get_defaults(obs_data_t* settings, const AVCodec* codec, AVCodecContext* context);
 
 		void get_properties_pre(obs_properties_t* props, const AVCodec* codec);

source/ui/prores_aw_handler.cpp

@@ -36,7 +36,7 @@ INITIALIZER(prores_aw_handler_init)
 };
 
 void obsffmpeg::ui::prores_aw_handler::override_colorformat(AVPixelFormat& target_format, obs_data_t* settings,
-                                                            const AVCodec* codec, AVCodecContext* context)
+                                                            const AVCodec* codec, AVCodecContext*)
 {
 	std::string profile = "";
 
@@ -60,13 +60,13 @@ void obsffmpeg::ui::prores_aw_handler::override_colorformat(AVPixelFormat& targe
 	}
 }
 
-void obsffmpeg::ui::prores_aw_handler::get_defaults(obs_data_t* settings, const AVCodec*, AVCodecContext*)
+void obsffmpeg::ui::prores_aw_handler::get_defaults(obs_data_t* settings, const AVCodec*, AVCodecContext*, bool)
 {
 	obs_data_set_default_int(settings, P_PRORES_PROFILE, 0);
 }
 
 void obsffmpeg::ui::prores_aw_handler::get_properties(obs_properties_t* props, const AVCodec* codec,
-                                                      AVCodecContext* context)
+                                                      AVCodecContext* context, bool)
 {
 	if (!context) {
 		auto p = obs_properties_add_list(props, P_PRORES_PROFILE, TRANSLATE(P_PRORES_PROFILE),
@@ -105,7 +105,7 @@ void obsffmpeg::ui::prores_aw_handler::update(obs_data_t* settings, const AVCode
 	context->profile = static_cast<int>(obs_data_get_int(settings, P_PRORES_PROFILE));
 }
 
-void obsffmpeg::ui::prores_aw_handler::log_options(obs_data_t* settings, const AVCodec* codec, AVCodecContext* context)
+void obsffmpeg::ui::prores_aw_handler::log_options(obs_data_t* settings, const AVCodec* codec, AVCodecContext*)
 {
 	for (auto ptr = codec->profiles; ptr->profile != FF_PROFILE_UNKNOWN; ptr++) {
 		if (ptr->profile == static_cast<int>(obs_data_get_int(settings, P_PRORES_PROFILE)))
@@ -113,7 +113,7 @@ void obsffmpeg::ui::prores_aw_handler::log_options(obs_data_t* settings, const A
 	}
 }
 
-void obsffmpeg::ui::prores_aw_handler::process_avpacket(AVPacket& packet, const AVCodec* codec, AVCodecContext* context)
+void obsffmpeg::ui::prores_aw_handler::process_avpacket(AVPacket& packet, const AVCodec*, AVCodecContext*)
 {
 	//FFmpeg Bug:
 	// When ProRes content is stored in Matroska, FFmpeg strips the size

source/ui/prores_aw_handler.hpp

@@ -38,10 +38,10 @@ namespace obsffmpeg {
 			                                  const AVCodec* codec, AVCodecContext* context) override;
 
 			virtual void get_defaults(obs_data_t* settings, const AVCodec* codec,
-			                          AVCodecContext* context) override;
+			                          AVCodecContext* context, bool hw_encode) override;
 
 			virtual void get_properties(obs_properties_t* props, const AVCodec* codec,
-			                            AVCodecContext* context) override;
+			                            AVCodecContext* context, bool hw_encode) override;
 
 			virtual void update(obs_data_t* settings, const AVCodec* codec,
 			                    AVCodecContext* context) override;