#include <core/producer/frame/pixel_format.h>\r
#include <core/video_format.h>\r
\r
+#include <gl/glew.h>\r
+\r
#include <boost/foreach.hpp>\r
+#include <boost/range.hpp>\r
+#include <boost/range/algorithm/find.hpp>\r
\r
+#include <algorithm>\r
#include <array>\r
+#include <deque>\r
#include <unordered_map>\r
\r
namespace caspar { namespace core {\r
\r
-struct render_item\r
-{\r
- pixel_format_desc desc;\r
- std::vector<safe_ptr<device_buffer>> textures;\r
- core::image_transform transform;\r
- int tag;\r
-};\r
-\r
struct image_mixer::implementation : boost::noncopyable\r
-{ \r
- static const size_t LOCAL_KEY_INDEX = 3;\r
- static const size_t LAYER_KEY_INDEX = 4;\r
- static const size_t BASE_INDEX = 5;\r
- \r
+{ \r
+ typedef std::deque<render_item> layer;\r
+\r
video_channel_context& channel_;\r
- \r
- std::stack<core::image_transform> transform_stack_;\r
\r
- std::queue<std::queue<std::deque<render_item>>> render_queue_; // layer/stream/items\r
+ std::vector<image_transform> transform_stack_;\r
+ std::vector<video_mode::type> mode_stack_;\r
+\r
+ std::deque<std::deque<render_item>> layers_; // layer/stream/items\r
\r
image_kernel kernel_;\r
\r
- std::shared_ptr<device_buffer> draw_buffer_[2];\r
- std::shared_ptr<device_buffer> write_buffer_;\r
-\r
- std::shared_ptr<device_buffer> stream_key_buffer_[2];\r
- std::shared_ptr<device_buffer> layer_key_buffer_;\r
-\r
- bool local_key_;\r
- bool layer_key_;\r
- \r
+ std::shared_ptr<device_buffer> draw_buffer_; \r
public:\r
implementation(video_channel_context& video_channel) \r
: channel_(video_channel)\r
- , write_buffer_ (video_channel.ogl().create_device_buffer(video_channel.get_format_desc().width, channel_.get_format_desc().height, 4))\r
- , layer_key_buffer_(video_channel.ogl().create_device_buffer(video_channel.get_format_desc().width, channel_.get_format_desc().height, 1))\r
- , local_key_(false)\r
- , layer_key_(false)\r
+ , transform_stack_(1)\r
+ , mode_stack_(1, video_mode::progressive)\r
{\r
- draw_buffer_[0] = channel_.ogl().create_device_buffer(video_channel.get_format_desc().width, channel_.get_format_desc().height, 4);\r
- draw_buffer_[1] = channel_.ogl().create_device_buffer(video_channel.get_format_desc().width, channel_.get_format_desc().height, 4);\r
- stream_key_buffer_[0] = video_channel.ogl().create_device_buffer(video_channel.get_format_desc().width, channel_.get_format_desc().height, 1);\r
- stream_key_buffer_[1] = video_channel.ogl().create_device_buffer(video_channel.get_format_desc().width, channel_.get_format_desc().height, 1);\r
-\r
- transform_stack_.push(core::image_transform());\r
-\r
- channel_.ogl().invoke([=]\r
- {\r
- if(!GLEE_VERSION_3_0)\r
- CASPAR_LOG(warning) << "Missing OpenGL 3.0 support.";//BOOST_THROW_EXCEPTION(not_supported() << msg_info("Missing OpenGL 3.0 support."));\r
- });\r
}\r
\r
+ ~implementation()\r
+ {\r
+ channel_.ogl().gc();\r
+ }\r
+ \r
void begin(core::basic_frame& frame)\r
{\r
- transform_stack_.push(transform_stack_.top()*frame.get_image_transform());\r
+ transform_stack_.push_back(transform_stack_.back()*frame.get_image_transform());\r
+ mode_stack_.push_back(frame.get_mode() == video_mode::progressive ? mode_stack_.back() : frame.get_mode());\r
}\r
\r
void visit(core::write_frame& frame)\r
- { \r
- render_item item = {frame.get_pixel_format_desc(), frame.get_textures(), transform_stack_.top()*frame.get_image_transform(), frame.tag()}; \r
-\r
- auto& layer = render_queue_.back();\r
+ { \r
+ CASPAR_ASSERT(!layers_.empty());\r
\r
- if(layer.empty() || (!layer.back().empty() && layer.back().back().tag != frame.tag()))\r
- layer.push(std::deque<render_item>());\r
+ // Check if frame has been discarded by interlacing\r
+ if(boost::range::find(mode_stack_, video_mode::upper) != mode_stack_.end() && boost::range::find(mode_stack_, video_mode::lower) != mode_stack_.end())\r
+ return;\r
\r
- layer.back().push_back(item);\r
+ core::render_item item(frame.get_pixel_format_desc(), frame.get_textures(), transform_stack_.back(), mode_stack_.back(), frame.tag()); \r
+\r
+ auto& layer = layers_.back();\r
+\r
+ if(boost::range::find(layer, item) == layer.end())\r
+ layer.push_back(item);\r
}\r
\r
void end()\r
{\r
- transform_stack_.pop();\r
+ transform_stack_.pop_back();\r
+ mode_stack_.pop_back();\r
}\r
\r
void begin_layer()\r
{\r
- render_queue_.push(std::queue<std::deque<render_item>>());\r
+ layers_.push_back(layer());\r
}\r
\r
void end_layer()\r
{\r
}\r
-\r
- void reinitialize_buffers()\r
- {\r
- draw_buffer_[0] = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 4);\r
- draw_buffer_[1] = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 4);\r
- write_buffer_ = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 4);\r
- stream_key_buffer_[0] = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 1);\r
- stream_key_buffer_[1] = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 1);\r
- layer_key_buffer_ = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 1);\r
- channel_.ogl().gc();\r
- }\r
-\r
- safe_ptr<host_buffer> render()\r
+ \r
+ boost::unique_future<safe_ptr<host_buffer>> render()\r
{ \r
- auto render_queue = std::move(render_queue_);\r
-\r
- return channel_.ogl().invoke([=]() mutable -> safe_ptr<host_buffer>\r
+ auto layers = std::move(layers_);\r
+ return channel_.ogl().begin_invoke([=]()mutable\r
{\r
- if(draw_buffer_[0]->width() != channel_.get_format_desc().width || draw_buffer_[0]->height() != channel_.get_format_desc().height)\r
- reinitialize_buffers();\r
- \r
- return do_render(std::move(render_queue));\r
+ return render(std::move(layers));\r
});\r
}\r
\r
- safe_ptr<host_buffer> do_render(std::queue<std::queue<std::deque<render_item>>>&& render_queue)\r
+ safe_ptr<host_buffer> render(std::deque<layer>&& layers)\r
{\r
- auto read_buffer = channel_.ogl().create_host_buffer(channel_.get_format_desc().size, host_buffer::read_only);\r
+ std::shared_ptr<device_buffer> layer_key_buffer;\r
+\r
+ draw_buffer_ = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 4); \r
+ channel_.ogl().clear(*draw_buffer_);\r
+ \r
+ BOOST_FOREACH(auto& layer, layers)\r
+ draw(std::move(layer), layer_key_buffer);\r
+ \r
+ auto host_buffer = channel_.ogl().create_host_buffer(channel_.get_format_desc().size, host_buffer::read_only);\r
+ channel_.ogl().attach(*draw_buffer_);\r
+ host_buffer->begin_read(draw_buffer_->width(), draw_buffer_->height(), format(draw_buffer_->stride()));\r
+ \r
+ GL(glFlush());\r
+ \r
+ return host_buffer;\r
+ }\r
\r
- layer_key_buffer_->clear();\r
- draw_buffer_[0]->clear();\r
- draw_buffer_[1]->clear();\r
- stream_key_buffer_[0]->clear();\r
- stream_key_buffer_[1]->clear();\r
+ // TODO: We might have more overlaps for opacity transitions\r
+ // TODO: What about blending modes, are they ok? Maybe only overlap detection is required for opacity?\r
+ void draw(layer&& layer, std::shared_ptr<device_buffer>& layer_key_buffer)\r
+ { \r
+ if(layer.empty())\r
+ return;\r
\r
- bool local_key = false;\r
- bool layer_key = false;\r
+ std::shared_ptr<device_buffer> local_key_buffer;\r
+ \r
+ if(has_overlapping_items(layer, layer.front().transform.get_blend_mode()))\r
+ {\r
+ auto local_draw_buffer = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 4); \r
+ channel_.ogl().clear(*local_draw_buffer);\r
\r
- while(!render_queue.empty())\r
- { \r
- stream_key_buffer_[0]->clear();\r
+ BOOST_FOREACH(auto& item, layer) \r
+ draw_item(std::move(item), local_draw_buffer, local_key_buffer, layer_key_buffer); \r
+ \r
+ kernel_.draw(channel_.ogl(), create_render_item(local_draw_buffer, layer.front().transform.get_blend_mode()), make_safe(draw_buffer_), nullptr, nullptr);\r
+ }\r
+ else // fast path\r
+ {\r
+ BOOST_FOREACH(auto& item, layer) \r
+ draw_item(std::move(item), make_safe(draw_buffer_), local_key_buffer, layer_key_buffer); \r
+ } \r
\r
- auto layer = std::move(render_queue.front());\r
- render_queue.pop();\r
+ std::swap(local_key_buffer, layer_key_buffer);\r
+ }\r
\r
- while(!layer.empty())\r
+ void draw_item(render_item&& item, const safe_ptr<device_buffer>& draw_buffer, std::shared_ptr<device_buffer>& local_key_buffer, std::shared_ptr<device_buffer>& layer_key_buffer)\r
+ { \r
+ if(item.transform.get_is_key())\r
+ {\r
+ if(!local_key_buffer)\r
{\r
- auto stream = std::move(layer.front());\r
- layer.pop();\r
- \r
- render(stream, local_key, layer_key);\r
- \r
- local_key = stream.front().transform.get_is_key();\r
- if(!local_key)\r
- stream_key_buffer_[0]->clear();\r
-\r
- channel_.ogl().yield();\r
+ local_key_buffer = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 1);\r
+ channel_.ogl().clear(*local_key_buffer);\r
}\r
\r
- layer_key = local_key;\r
- local_key = false;\r
- std::swap(stream_key_buffer_[0], layer_key_buffer_);\r
+ kernel_.draw(channel_.ogl(), std::move(item), make_safe(local_key_buffer), nullptr, nullptr);\r
}\r
+ else\r
+ {\r
+ kernel_.draw(channel_.ogl(), std::move(item), draw_buffer, local_key_buffer, layer_key_buffer);\r
+ local_key_buffer.reset();\r
+ }\r
+ }\r
+ \r
+ render_item create_render_item(const safe_ptr<device_buffer>& buffer, image_transform::blend_mode::type blend_mode)\r
+ {\r
+ CASPAR_ASSERT(buffer->stride() == 4 && "Only used for bgra textures");\r
\r
- std::swap(draw_buffer_[0], write_buffer_);\r
+ pixel_format_desc desc;\r
+ desc.pix_fmt = pixel_format::bgra;\r
+ desc.planes.push_back(pixel_format_desc::plane(channel_.get_format_desc().width, channel_.get_format_desc().height, 4));\r
\r
- // Start transfer from device to host. \r
- write_buffer_->write(*read_buffer);\r
+ std::vector<safe_ptr<device_buffer>> textures;\r
+ textures.push_back(buffer);\r
+ \r
+ image_transform transform;\r
+ transform.set_blend_mode(blend_mode);\r
\r
- return read_buffer;\r
+ return render_item(desc, std::move(textures), transform, video_mode::progressive, nullptr); \r
}\r
\r
- void render(std::deque<render_item>& stream, bool local_key, bool layer_key)\r
+ // TODO: Optimize\r
+ bool has_overlapping_items(const layer& layer, image_transform::blend_mode::type blend_mode)\r
{\r
- while(stream.size() > 2)\r
- stream.pop_front();\r
+ if(layer.empty())\r
+ return false; \r
\r
- BOOST_FOREACH(auto item2, stream)\r
- {\r
- for(size_t n = 0; n < item2.textures.size(); ++n)\r
- item2.textures[n]->bind(n); \r
- }\r
+ implementation::layer fill;\r
\r
- if(stream.front().transform.get_is_key())\r
+ std::copy_if(layer.begin(), layer.end(), std::back_inserter(fill), [&](const render_item& item)\r
{\r
- stream_key_buffer_[0]->bind(BASE_INDEX); \r
- stream_key_buffer_[1]->attach();\r
- \r
- BOOST_FOREACH(auto item2, stream)\r
- kernel_.draw(channel_.get_format_desc().width, channel_.get_format_desc().height, item2.desc, item2.transform, false, false);\r
+ return !item.transform.get_is_key();\r
+ });\r
\r
- std::swap(stream_key_buffer_[0], stream_key_buffer_[1]);\r
-\r
- stream_key_buffer_[1]->bind();\r
- glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, channel_.get_format_desc().width, channel_.get_format_desc().height); \r
- }\r
- else\r
+ if(blend_mode == image_transform::blend_mode::normal) // Only overlap if opacity\r
{\r
- stream_key_buffer_[0]->bind(LOCAL_KEY_INDEX); \r
- layer_key_buffer_->bind(LAYER_KEY_INDEX);\r
- \r
- draw_buffer_[0]->bind(BASE_INDEX); \r
- draw_buffer_[1]->attach(); \r
- \r
- BOOST_FOREACH(auto item2, stream)\r
- kernel_.draw(channel_.get_format_desc().width, channel_.get_format_desc().height, item2.desc, item2.transform, local_key, layer_key); \r
- \r
- std::swap(draw_buffer_[0], draw_buffer_[1]);\r
- \r
- draw_buffer_[1]->bind();\r
- glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, channel_.get_format_desc().width, channel_.get_format_desc().height);\r
+ return std::any_of(fill.begin(), fill.end(), [&](const render_item& item)\r
+ {\r
+ return item.transform.get_opacity() < 1.0 - 0.001;\r
+ });\r
}\r
- }\r
- \r
+\r
+ // Simple solution, just check if we have differnt video streams / tags.\r
+ return std::any_of(fill.begin(), fill.end(), [&](const render_item& item)\r
+ {\r
+ return item.tag != fill.front().tag;\r
+ });\r
+ } \r
+\r
safe_ptr<write_frame> create_frame(const void* tag, const core::pixel_format_desc& desc)\r
{\r
- return make_safe<write_frame>(channel_.ogl(), reinterpret_cast<int>(tag), desc);\r
+ return make_safe<write_frame>(channel_.ogl(), tag, desc);\r
}\r
};\r
\r
void image_mixer::begin(core::basic_frame& frame){impl_->begin(frame);}\r
void image_mixer::visit(core::write_frame& frame){impl_->visit(frame);}\r
void image_mixer::end(){impl_->end();}\r
-safe_ptr<host_buffer> image_mixer::render(){return impl_->render();}\r
+boost::unique_future<safe_ptr<host_buffer>> image_mixer::render(){return impl_->render();}\r
safe_ptr<write_frame> image_mixer::create_frame(const void* tag, const core::pixel_format_desc& desc){return impl_->create_frame(tag, desc);}\r
void image_mixer::begin_layer(){impl_->begin_layer();}\r
void image_mixer::end_layer(){impl_->end_layer();}\r
projects / casparcg / blobdiff