X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=core%2Fmixer%2Fimage%2Fimage_mixer.cpp;h=d81c9f798156bafa03ee97777246e5998fb96895;hb=371df45d22eba16e04e14238d34c86162a36ce20;hp=660903063d923d5bded5ecfb060efcbd9c6223bd;hpb=4038fcbd82045fb6c23dcec439eec5da4f018579;p=casparcg

diff --git a/core/mixer/image/image_mixer.cpp b/core/mixer/image/image_mixer.cpp
index 660903063..d81c9f798 100644
--- a/core/mixer/image/image_mixer.cpp
+++ b/core/mixer/image/image_mixer.cpp
@@ -20,191 +20,285 @@
 #include "../../stdafx.h"
 
 #include "image_mixer.h"
-#include "image_kernel.h"
 
+#include "image_kernel.h"
+#include "../write_frame.h"
 #include "../gpu/ogl_device.h"
 #include "../gpu/host_buffer.h"
 #include "../gpu/device_buffer.h"
-#include "../gpu/gpu_write_frame.h"
+#include "../../video_channel_context.h"
 
-#include <common/concurrency/executor.h>
 #include <common/exception/exceptions.h>
 #include <common/gl/gl_check.h>
+#include <common/utility/move_on_copy.h>
 
-#include <core/producer/frame/image_transform.h>
+#include <core/producer/frame/frame_transform.h>
 #include <core/producer/frame/pixel_format.h>
 #include <core/video_format.h>
 
-#include <boost/cast.hpp>
-
-#include <Glee.h>
-#include <SFML/Window/Context.hpp>
+#include <gl/glew.h>
 
-#include <array>
-#include <unordered_map>
+#include <boost/foreach.hpp>
+#include <boost/range/algorithm_ext/erase.hpp>
 
-namespace caspar { namespace mixer {
-		
-struct image_mixer::implementation : boost::noncopyable
-{			
-	const core::video_format_desc format_desc_;
-	
-	std::stack<core::image_transform> transform_stack_;
+#include <algorithm>
+#include <deque>
 
-	GLuint fbo_;
-	std::array<std::shared_ptr<device_buffer>, 2> render_targets_;
+using namespace boost::assign;
 
-	std::shared_ptr<host_buffer> reading_;
+namespace caspar { namespace core {
+	
+struct item
+{
+	pixel_format_desc						pix_desc;
+	std::vector<safe_ptr<device_buffer>>	textures;
+	frame_transform							transform;
+};
 
-	image_kernel kernel_;
+typedef std::pair<blend_mode::type, std::vector<item>> layer;
 
-	std::shared_ptr<device_buffer> key_;
+class image_renderer
+{
+	ogl_device&								ogl_;
+	const video_format_desc					format_desc_;
+	image_kernel							kernel_;	
+	std::shared_ptr<device_buffer>			transferring_buffer_;
 public:
-	implementation(const core::video_format_desc& format_desc) 
-		: format_desc_(format_desc)
+	image_renderer(ogl_device& ogl, const video_format_desc& format_desc)
+		: ogl_(ogl)
+		, format_desc_(format_desc)
 	{
-		ogl_device::invoke([]
+	}
+	
+	boost::unique_future<safe_ptr<host_buffer>> operator()(std::vector<layer>&& layers)
+	{		
+		auto layers2 = make_move_on_copy(std::move(layers));
+		return ogl_.begin_invoke([=]
 		{
-			if(!GLEE_VERSION_3_0)
-				BOOST_THROW_EXCEPTION(not_supported() << msg_info("Missing OpenGL 3.0 support."));
+			return do_render(std::move(layers2.value));
 		});
+	}
+	
+private:
+	safe_ptr<host_buffer> do_render(std::vector<layer>&& layers)
+	{
+		auto draw_buffer = create_mixer_buffer(4);
+
+		if(format_desc_.field_mode != field_mode::progressive)
+		{
+			auto upper = layers;
+			auto lower = std::move(layers);
+
+			BOOST_FOREACH(auto& layer, upper)
+			{
+				BOOST_FOREACH(auto& item, layer.second)
+					item.transform.field_mode = static_cast<field_mode::type>(item.transform.field_mode & field_mode::upper);
+			}
+
+			BOOST_FOREACH(auto& layer, lower)
+			{
+				BOOST_FOREACH(auto& item, layer.second)
+					item.transform.field_mode = static_cast<field_mode::type>(item.transform.field_mode & field_mode::lower);
+			}
+
+			draw(std::move(upper), draw_buffer);
+			draw(std::move(lower), draw_buffer);
+		}
+		else
+		{
+			draw(std::move(layers), draw_buffer);
+		}
+
+		auto host_buffer = ogl_.create_host_buffer(format_desc_.size, host_buffer::read_only);
+		ogl_.attach(*draw_buffer);
+		host_buffer->begin_read(draw_buffer->width(), draw_buffer->height(), format(draw_buffer->stride()));
 		
-		ogl_device::begin_invoke([=]
+		transferring_buffer_ = std::move(draw_buffer);
+
+		ogl_.flush(); // NOTE: This is important, otherwise fences will deadlock.
+			
+		return host_buffer;
+	}
+
+	void draw(std::vector<layer>&&		layers, 
+			  safe_ptr<device_buffer>&	draw_buffer)
+	{
+		std::shared_ptr<device_buffer> layer_key_buffer;
+
+		BOOST_FOREACH(auto& layer, layers)
+			draw_layer(std::move(layer), draw_buffer, layer_key_buffer);
+	}
+
+	void draw_layer(layer&&							layer, 
+					safe_ptr<device_buffer>&		draw_buffer,
+					std::shared_ptr<device_buffer>& layer_key_buffer)
+	{				
+		boost::remove_erase_if(layer.second, [](const item& item){return item.transform.field_mode == field_mode::empty;});
+
+		if(layer.second.empty())
+			return;
+
+		std::shared_ptr<device_buffer> local_key_buffer;
+		std::shared_ptr<device_buffer> local_mix_buffer;
+				
+		if(layer.first != blend_mode::normal)
+		{
+			auto layer_draw_buffer = create_mixer_buffer(4);
+
+			BOOST_FOREACH(auto& item, layer.second)
+				draw_item(std::move(item), layer_draw_buffer, layer_key_buffer, local_key_buffer, local_mix_buffer);	
+		
+			draw_mixer_buffer(layer_draw_buffer, std::move(local_mix_buffer), blend_mode::normal);							
+			draw_mixer_buffer(draw_buffer, std::move(layer_draw_buffer), layer.first);
+		}
+		else // fast path
+		{
+			BOOST_FOREACH(auto& item, layer.second)		
+				draw_item(std::move(item), draw_buffer, layer_key_buffer, local_key_buffer, local_mix_buffer);		
+					
+			draw_mixer_buffer(draw_buffer, std::move(local_mix_buffer), blend_mode::normal);
+		}					
+
+		layer_key_buffer = std::move(local_key_buffer);
+	}
+
+	void draw_item(item&&							item, 
+				   safe_ptr<device_buffer>&			draw_buffer, 
+				   std::shared_ptr<device_buffer>&	layer_key_buffer, 
+				   std::shared_ptr<device_buffer>&	local_key_buffer, 
+				   std::shared_ptr<device_buffer>&	local_mix_buffer)
+	{			
+		draw_params draw_params;
+		draw_params.pix_desc				= std::move(item.pix_desc);
+		draw_params.textures				= std::move(item.textures);
+		draw_params.transform				= std::move(item.transform);
+
+		if(item.transform.is_key)
 		{
-			transform_stack_.push(core::image_transform());
-			transform_stack_.top().set_mode(core::video_mode::progressive);
+			local_key_buffer = local_key_buffer ? local_key_buffer : create_mixer_buffer(1);
 
-			GL(glEnable(GL_TEXTURE_2D));
-			GL(glDisable(GL_DEPTH_TEST));		
+			draw_params.background			= local_key_buffer;
+			draw_params.local_key			= nullptr;
+			draw_params.layer_key			= nullptr;
 
-			render_targets_[0] = ogl_device::create_device_buffer(format_desc.width, format_desc.height, 4);
-			render_targets_[1] = ogl_device::create_device_buffer(format_desc.width, format_desc.height, 4);
+			kernel_.draw(ogl_, std::move(draw_params));
+		}
+		else if(item.transform.is_mix)
+		{
+			local_mix_buffer = local_mix_buffer ? local_mix_buffer : create_mixer_buffer(4);
+
+			draw_params.background			= local_mix_buffer;
+			draw_params.local_key			= std::move(local_key_buffer);
+			draw_params.layer_key			= layer_key_buffer;
+
+			draw_params.keyer				= keyer::additive;
+
+			kernel_.draw(ogl_, std::move(draw_params));
+		}
+		else
+		{
+			draw_mixer_buffer(draw_buffer, std::move(local_mix_buffer), blend_mode::normal);
 			
-			GL(glGenFramebuffers(1, &fbo_));		
-			GL(glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo_));
-			GL(glReadBuffer(GL_COLOR_ATTACHMENT0_EXT));
+			draw_params.background			= draw_buffer;
+			draw_params.local_key			= std::move(local_key_buffer);
+			draw_params.layer_key			= layer_key_buffer;
 
-			reading_ = ogl_device::create_host_buffer(format_desc_.size, host_buffer::read_only);
-		});
+			kernel_.draw(ogl_, std::move(draw_params));
+		}	
 	}
 
-	~implementation()
+	void draw_mixer_buffer(safe_ptr<device_buffer>&			draw_buffer, 
+						   std::shared_ptr<device_buffer>&& source_buffer, 
+						   blend_mode::type					blend_mode = blend_mode::normal)
+	{
+		if(!source_buffer)
+			return;
+
+		draw_params draw_params;
+		draw_params.pix_desc.pix_fmt	= pixel_format::bgra;
+		draw_params.pix_desc.planes		= list_of(pixel_format_desc::plane(source_buffer->width(), source_buffer->height(), 4));
+		draw_params.textures			= list_of(source_buffer);
+		draw_params.transform			= frame_transform();
+		draw_params.blend_mode			= blend_mode;
+		draw_params.background			= draw_buffer;
+
+		kernel_.draw(ogl_, std::move(draw_params));
+	}
+			
+	safe_ptr<device_buffer> create_mixer_buffer(size_t stride)
+	{
+		auto buffer = ogl_.create_device_buffer(format_desc_.width, format_desc_.height, stride);
+		ogl_.clear(*buffer);
+		return buffer;
+	}
+};
+		
+struct image_mixer::implementation : boost::noncopyable
+{	
+	ogl_device&						ogl_;
+	image_renderer					renderer_;
+	std::vector<frame_transform>	transform_stack_;
+	std::vector<layer>				layers_; // layer/stream/items
+public:
+	implementation(ogl_device& ogl, const video_format_desc& format_desc) 
+		: ogl_(ogl)
+		, renderer_(ogl, format_desc)
+		, transform_stack_(1)	
 	{
-		glDeleteFramebuffersEXT(1, &fbo_);
 	}
 
-	void begin(const core::basic_frame& frame)
+	void begin_layer(blend_mode::type blend_mode)
 	{
-		transform_stack_.push(transform_stack_.top()*frame.get_image_transform());
+		layers_.push_back(std::make_pair(blend_mode, std::vector<item>()));
 	}
 		
-	void visit(core::write_frame& frame)
+	void begin(basic_frame& frame)
 	{
-		auto gpu_frame = boost::polymorphic_downcast<gpu_write_frame*>(&frame);
-		auto desc = gpu_frame->get_pixel_format_desc();
-		auto buffers = gpu_frame->get_plane_buffers();
+		transform_stack_.push_back(transform_stack_.back()*frame.get_frame_transform());
+	}
+		
+	void visit(write_frame& frame)
+	{			
+		item item;
+		item.pix_desc	= frame.get_pixel_format_desc();
+		item.textures	= frame.get_textures();
+		item.transform	= transform_stack_.back();
 
-		auto transform = transform_stack_.top();
-		ogl_device::begin_invoke([=]
-		{
-			std::vector<safe_ptr<device_buffer>> device_buffers;
-			for(size_t n = 0; n < buffers.size(); ++n)
-			{
-				auto texture = ogl_device::create_device_buffer(desc.planes[n].width, desc.planes[n].height, desc.planes[n].channels);
-				texture->read(*buffers[n]);
-				device_buffers.push_back(texture);
-			}
-						
-			if(transform.get_is_key()) // Its a key_frame just save buffer for next frame.
-			{
-				if(!device_buffers.empty())				
-					key_ = device_buffers[0];				
-			}
-			else
-			{
-				for(size_t n = 0; n < buffers.size(); ++n)
-				{
-					GL(glActiveTexture(GL_TEXTURE0+n));
-					device_buffers[n]->bind();
-				}
-						
-				if(key_)
-				{
-					GL(glActiveTexture(GL_TEXTURE0+3));
-					key_->bind();
-				}
-
-				GL(glColor4d(1.0, 1.0, 1.0, transform.get_opacity()));
-				GL(glViewport(0, 0, format_desc_.width, format_desc_.height));
-				kernel_.apply(desc, transform, key_ != nullptr);
-						
-				auto m_p = transform.get_key_translation();
-				auto m_s = transform.get_key_scale();
-				double w = static_cast<double>(format_desc_.width);
-				double h = static_cast<double>(format_desc_.height);
-			
-				GL(glEnable(GL_SCISSOR_TEST));
-				GL(glScissor(static_cast<size_t>(m_p[0]*w), static_cast<size_t>(m_p[1]*h), static_cast<size_t>(m_s[0]*w), static_cast<size_t>(m_s[1]*h)));
-			
-				auto f_p = transform.get_fill_translation();
-				auto f_s = transform.get_fill_scale();
-			
-				glBegin(GL_QUADS);
-					glTexCoord2d(0.0, 0.0); glVertex2d( f_p[0]        *2.0-1.0,	 f_p[1]        *2.0-1.0);
-					glTexCoord2d(1.0, 0.0); glVertex2d((f_p[0]+f_s[0])*2.0-1.0,  f_p[1]        *2.0-1.0);
-					glTexCoord2d(1.0, 1.0); glVertex2d((f_p[0]+f_s[0])*2.0-1.0, (f_p[1]+f_s[1])*2.0-1.0);
-					glTexCoord2d(0.0, 1.0); glVertex2d( f_p[0]        *2.0-1.0, (f_p[1]+f_s[1])*2.0-1.0);
-				glEnd();
-				GL(glDisable(GL_SCISSOR_TEST));		
-
-				key_ = nullptr;		
-			}
-		});
+		layers_.back().second.push_back(item);
 	}
 
 	void end()
 	{
-		transform_stack_.pop();
+		transform_stack_.pop_back();
 	}
 
-	boost::unique_future<safe_ptr<const host_buffer>> begin_pass()
-	{
-		return ogl_device::begin_invoke([=]() -> safe_ptr<const host_buffer>
-		{
-			reading_->map();
-			render_targets_[0]->attach(0);
-			GL(glClear(GL_COLOR_BUFFER_BIT));
-			return safe_ptr<const host_buffer>(reading_);
-		});
+	void end_layer()
+	{		
 	}
-
-	void end_pass()
+	
+	boost::unique_future<safe_ptr<host_buffer>> render()
 	{
-		ogl_device::begin_invoke([=]
-		{
-			reading_ = ogl_device::create_host_buffer(format_desc_.size, host_buffer::read_only);
-			render_targets_[0]->write(*reading_);
-			std::rotate(render_targets_.begin(), render_targets_.begin() + 1, render_targets_.end());
-		});
+		return renderer_(std::move(layers_));
 	}
-		
-	std::vector<safe_ptr<host_buffer>> create_buffers(const core::pixel_format_desc& format)
+
+	safe_ptr<write_frame> create_frame(const void* tag, const pixel_format_desc& desc)
 	{
-		std::vector<safe_ptr<host_buffer>> buffers;
-		std::transform(format.planes.begin(), format.planes.end(), std::back_inserter(buffers), [&](const core::pixel_format_desc::plane& plane)
-		{
-			return ogl_device::create_host_buffer(plane.size, host_buffer::write_only);
-		});
-		return buffers;
+		return make_safe<write_frame>(ogl_, tag, desc);
 	}
 };
 
-image_mixer::image_mixer(const core::video_format_desc& format_desc) : impl_(new implementation(format_desc)){}
-void image_mixer::begin(const core::basic_frame& frame){impl_->begin(frame);}
-void image_mixer::visit(core::write_frame& frame){impl_->visit(frame);}
+image_mixer::image_mixer(ogl_device& ogl, const video_format_desc& format_desc) : impl_(new implementation(ogl, format_desc)){}
+void image_mixer::begin(basic_frame& frame){impl_->begin(frame);}
+void image_mixer::visit(write_frame& frame){impl_->visit(frame);}
 void image_mixer::end(){impl_->end();}
-boost::unique_future<safe_ptr<const host_buffer>> image_mixer::begin_pass(){	return impl_->begin_pass();}
-void image_mixer::end_pass(){impl_->end_pass();}
-std::vector<safe_ptr<host_buffer>> image_mixer::create_buffers(const core::pixel_format_desc& format){return impl_->create_buffers(format);}
+boost::unique_future<safe_ptr<host_buffer>> image_mixer::render(){return impl_->render();}
+safe_ptr<write_frame> image_mixer::create_frame(const void* tag, const pixel_format_desc& desc){return impl_->create_frame(tag, desc);}
+void image_mixer::begin_layer(blend_mode::type blend_mode){impl_->begin_layer(blend_mode);}
+void image_mixer::end_layer(){impl_->end_layer();}
+image_mixer& image_mixer::operator=(image_mixer&& other)
+{
+	impl_ = std::move(other.impl_);
+	return *this;
+}
 
 }}
\ No newline at end of file