-/*\r
-* Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
-*\r
-* This file is part of CasparCG (www.casparcg.com).\r
-*\r
-* CasparCG is free software: you can redistribute it and/or modify\r
-* it under the terms of the GNU General Public License as published by\r
-* the Free Software Foundation, either version 3 of the License, or\r
-* (at your option) any later version.\r
-*\r
-* CasparCG is distributed in the hope that it will be useful,\r
-* but WITHOUT ANY WARRANTY; without even the implied warranty of\r
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
-* GNU General Public License for more details.\r
-*\r
-* You should have received a copy of the GNU General Public License\r
-* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
-*\r
-* Author: Robert Nagy, ronag89@gmail.com\r
-*/\r
-#include "../../stdafx.h"\r
-\r
-#include "image_mixer.h"\r
-\r
-#include "image_kernel.h"\r
-\r
-#include "../util/device.h"\r
-#include "../util/buffer.h"\r
-#include "../util/texture.h"\r
-\r
-#include <common/gl/gl_check.h>\r
-#include <common/future.h>\r
-#include <common/array.h>\r
-\r
-#include <core/frame/frame.h>\r
-#include <core/frame/frame_transform.h>\r
-#include <core/frame/pixel_format.h>\r
-#include <core/video_format.h>\r
-\r
-#include <asmlib.h>\r
-\r
-#include <gl/glew.h>\r
-\r
-#include <boost/foreach.hpp>\r
-#include <boost/range/algorithm_ext/erase.hpp>\r
-#include <boost/thread/future.hpp>\r
-\r
-#include <algorithm>\r
-#include <vector>\r
-\r
-using namespace boost::assign;\r
-\r
-namespace caspar { namespace accelerator { namespace ogl {\r
- \r
-typedef boost::shared_future<spl::shared_ptr<texture>> future_texture;\r
-\r
-struct item\r
-{\r
- core::pixel_format_desc pix_desc;\r
- core::field_mode field_mode;\r
- std::vector<future_texture> textures;\r
- core::image_transform transform;\r
-\r
- item()\r
- : pix_desc(core::pixel_format::invalid)\r
- , field_mode(core::field_mode::empty)\r
- {\r
- }\r
-};\r
-\r
-struct layer\r
-{\r
- std::vector<item> items;\r
- core::blend_mode blend_mode;\r
-\r
- layer()\r
- : blend_mode(core::blend_mode::normal)\r
- {\r
- }\r
-\r
- layer(std::vector<item> items, core::blend_mode blend_mode)\r
- : items(std::move(items))\r
- , blend_mode(blend_mode)\r
- {\r
- }\r
-};\r
-\r
-class image_renderer\r
-{\r
- spl::shared_ptr<device> ogl_;\r
- image_kernel kernel_;\r
-public:\r
- image_renderer(const spl::shared_ptr<device>& ogl)\r
- : ogl_(ogl)\r
- , kernel_(ogl_)\r
- {\r
- }\r
- \r
- boost::unique_future<array<const std::uint8_t>> operator()(std::vector<layer> layers, const core::video_format_desc& format_desc)\r
- { \r
- if(layers.empty())\r
- { // Bypass GPU with empty frame.\r
- auto buffer = spl::make_shared<const std::vector<uint8_t, tbb::cache_aligned_allocator<uint8_t>>>(format_desc.size, 0);\r
- return async(launch::deferred, [=]\r
- {\r
- return array<const std::uint8_t>(buffer->data(), format_desc.size, true, buffer);\r
- });\r
- } \r
-\r
- BOOST_FOREACH(auto& layer, layers)\r
- { \r
- // Remove first field stills.\r
- boost::range::remove_erase_if(layer.items, [&](const item& item)\r
- {\r
- return item.transform.is_still && item.transform.field_mode == format_desc.field_mode; // only us last field for stills.\r
- });\r
- \r
- // Stills are progressive\r
- BOOST_FOREACH(auto& item, layer.items)\r
- {\r
- if(item.transform.is_still)\r
- item.transform.field_mode = core::field_mode::progressive;\r
- }\r
- }\r
-\r
- return flatten(ogl_->begin_invoke([=]() mutable -> boost::shared_future<array<const std::uint8_t>>\r
- {\r
- auto target_texture = ogl_->create_texture(format_desc.width, format_desc.height, 4);\r
-\r
- if(format_desc.field_mode != core::field_mode::progressive)\r
- {\r
- draw(target_texture, layers, format_desc, core::field_mode::upper);\r
- draw(target_texture, std::move(layers), format_desc, core::field_mode::lower);\r
- }\r
- else \r
- draw(target_texture, std::move(layers), format_desc, core::field_mode::progressive);\r
- \r
- return ogl_->copy_async(target_texture);\r
- }));\r
- }\r
-\r
-private: \r
- \r
- void draw(spl::shared_ptr<texture>& target_texture, \r
- std::vector<layer> layers, \r
- const core::video_format_desc& format_desc,\r
- core::field_mode field_mode)\r
- {\r
- std::shared_ptr<texture> layer_key_texture;\r
-\r
- BOOST_FOREACH(auto& layer, layers)\r
- draw(target_texture, std::move(layer), layer_key_texture, format_desc, field_mode);\r
- }\r
-\r
- void draw(spl::shared_ptr<texture>& target_texture,\r
- layer layer, \r
- std::shared_ptr<texture>& layer_key_texture,\r
- const core::video_format_desc& format_desc,\r
- core::field_mode field_mode)\r
- { \r
- // Fix frames \r
- BOOST_FOREACH(auto& item, layer.items) \r
- {\r
- //if(std::abs(item.transform.fill_scale[1]-1.0) > 1.0/target_texture->height() ||\r
- // std::abs(item.transform.fill_translation[1]) > 1.0/target_texture->height()) \r
- // CASPAR_LOG(warning) << L"[image_mixer] Frame should be deinterlaced. Send FILTER DEINTERLACE_BOB when creating producer."; \r
-\r
- if(item.pix_desc.planes.at(0).height == 480) // NTSC DV\r
- {\r
- item.transform.fill_translation[1] += 2.0/static_cast<double>(format_desc.height);\r
- item.transform.fill_scale[1] *= 1.0 - 6.0*1.0/static_cast<double>(format_desc.height);\r
- }\r
- \r
- // Fix field-order if needed\r
- if(item.field_mode == core::field_mode::lower && format_desc.field_mode == core::field_mode::upper)\r
- item.transform.fill_translation[1] += 1.0/static_cast<double>(format_desc.height);\r
- else if(item.field_mode == core::field_mode::upper && format_desc.field_mode == core::field_mode::lower)\r
- item.transform.fill_translation[1] -= 1.0/static_cast<double>(format_desc.height);\r
- }\r
-\r
- // Mask out fields\r
- BOOST_FOREACH(auto& item, layer.items) \r
- item.transform.field_mode &= field_mode;\r
- \r
- // Remove empty items.\r
- boost::range::remove_erase_if(layer.items, [&](const item& item)\r
- {\r
- return item.transform.field_mode == core::field_mode::empty;\r
- });\r
- \r
- if(layer.items.empty())\r
- return;\r
-\r
- std::shared_ptr<texture> local_key_texture;\r
- std::shared_ptr<texture> local_mix_texture;\r
- \r
- if(layer.blend_mode != core::blend_mode::normal)\r
- {\r
- auto layer_texture = ogl_->create_texture(target_texture->width(), target_texture->height(), 4);\r
-\r
- BOOST_FOREACH(auto& item, layer.items)\r
- draw(layer_texture, std::move(item), layer_key_texture, local_key_texture, local_mix_texture); \r
- \r
- draw(layer_texture, std::move(local_mix_texture), core::blend_mode::normal); \r
- draw(target_texture, std::move(layer_texture), layer.blend_mode);\r
- }\r
- else // fast path\r
- {\r
- BOOST_FOREACH(auto& item, layer.items) \r
- draw(target_texture, std::move(item), layer_key_texture, local_key_texture, local_mix_texture); \r
- \r
- draw(target_texture, std::move(local_mix_texture), core::blend_mode::normal);\r
- } \r
-\r
- layer_key_texture = std::move(local_key_texture);\r
- }\r
-\r
- void draw(spl::shared_ptr<texture>& target_texture, \r
- item item, \r
- std::shared_ptr<texture>& layer_key_texture, \r
- std::shared_ptr<texture>& local_key_texture, \r
- std::shared_ptr<texture>& local_mix_texture)\r
- { \r
- draw_params draw_params;\r
- draw_params.pix_desc = std::move(item.pix_desc);\r
- draw_params.transform = std::move(item.transform);\r
-\r
- BOOST_FOREACH(auto& future_texture, item.textures)\r
- draw_params.textures.push_back(future_texture.get());\r
-\r
- if(item.transform.is_key)\r
- {\r
- local_key_texture = local_key_texture ? local_key_texture : ogl_->create_texture(target_texture->width(), target_texture->height(), 1);\r
-\r
- draw_params.background = local_key_texture;\r
- draw_params.local_key = nullptr;\r
- draw_params.layer_key = nullptr;\r
-\r
- kernel_.draw(std::move(draw_params));\r
- }\r
- else if(item.transform.is_mix)\r
- {\r
- local_mix_texture = local_mix_texture ? local_mix_texture : ogl_->create_texture(target_texture->width(), target_texture->height(), 4);\r
-\r
- draw_params.background = local_mix_texture;\r
- draw_params.local_key = std::move(local_key_texture);\r
- draw_params.layer_key = layer_key_texture;\r
-\r
- draw_params.keyer = keyer::additive;\r
-\r
- kernel_.draw(std::move(draw_params));\r
- }\r
- else\r
- {\r
- draw(target_texture, std::move(local_mix_texture), core::blend_mode::normal);\r
- \r
- draw_params.background = target_texture;\r
- draw_params.local_key = std::move(local_key_texture);\r
- draw_params.layer_key = layer_key_texture;\r
-\r
- kernel_.draw(std::move(draw_params));\r
- } \r
- }\r
-\r
- void draw(spl::shared_ptr<texture>& target_texture, \r
- std::shared_ptr<texture>&& source_buffer, \r
- core::blend_mode blend_mode = core::blend_mode::normal)\r
- {\r
- if(!source_buffer)\r
- return;\r
-\r
- draw_params draw_params;\r
- draw_params.pix_desc.format = core::pixel_format::bgra;\r
- draw_params.pix_desc.planes = list_of(core::pixel_format_desc::plane(source_buffer->width(), source_buffer->height(), 4));\r
- draw_params.textures = list_of(source_buffer);\r
- draw_params.transform = core::image_transform();\r
- draw_params.blend_mode = blend_mode;\r
- draw_params.background = target_texture;\r
-\r
- kernel_.draw(std::move(draw_params));\r
- }\r
-};\r
- \r
-struct image_mixer::impl : public core::frame_factory\r
-{ \r
- spl::shared_ptr<device> ogl_;\r
- image_renderer renderer_;\r
- std::vector<core::image_transform> transform_stack_;\r
- std::vector<layer> layers_; // layer/stream/items\r
-public:\r
- impl(const spl::shared_ptr<device>& ogl) \r
- : ogl_(ogl)\r
- , renderer_(ogl)\r
- , transform_stack_(1) \r
- {\r
- CASPAR_LOG(info) << L"Initialized OpenGL Accelerated GPU Image Mixer";\r
- }\r
-\r
- void begin_layer(core::blend_mode blend_mode)\r
- {\r
- layers_.push_back(layer(std::vector<item>(), blend_mode));\r
- }\r
- \r
- void push(const core::frame_transform& transform)\r
- {\r
- transform_stack_.push_back(transform_stack_.back()*transform.image_transform);\r
- }\r
- \r
- void visit(const core::const_frame& frame)\r
- { \r
- if(frame.pixel_format_desc().format == core::pixel_format::invalid)\r
- return;\r
-\r
- if(frame.pixel_format_desc().planes.empty())\r
- return;\r
-\r
- if(transform_stack_.back().field_mode == core::field_mode::empty)\r
- return;\r
-\r
- item item;\r
- item.pix_desc = frame.pixel_format_desc();\r
- item.field_mode = frame.field_mode();\r
- item.transform = transform_stack_.back();\r
- \r
- // NOTE: Once we have copied the arrays they are no longer valid for reading!!! Check for alternative solution e.g. transfer with AMD_pinned_memory.\r
- for(int n = 0; n < static_cast<int>(item.pix_desc.planes.size()); ++n)\r
- item.textures.push_back(ogl_->copy_async(frame.image_data(n), item.pix_desc.planes[n].width, item.pix_desc.planes[n].height, item.pix_desc.planes[n].stride));\r
- \r
- layers_.back().items.push_back(item);\r
- }\r
-\r
- void pop()\r
- {\r
- transform_stack_.pop_back();\r
- }\r
-\r
- void end_layer()\r
- { \r
- }\r
- \r
- boost::unique_future<array<const std::uint8_t>> render(const core::video_format_desc& format_desc)\r
- {\r
- return renderer_(std::move(layers_), format_desc);\r
- }\r
- \r
- core::mutable_frame create_frame(const void* tag, const core::pixel_format_desc& desc, double frame_rate, core::field_mode field_mode) override\r
- {\r
- std::vector<array<std::uint8_t>> buffers;\r
- BOOST_FOREACH(auto& plane, desc.planes) \r
- buffers.push_back(ogl_->create_array(plane.size)); \r
-\r
- return core::mutable_frame(std::move(buffers), core::audio_buffer(), tag, desc, frame_rate, field_mode);\r
- }\r
-};\r
-\r
-image_mixer::image_mixer(const spl::shared_ptr<device>& ogl) : impl_(new impl(ogl)){}\r
-image_mixer::~image_mixer(){}\r
-void image_mixer::push(const core::frame_transform& transform){impl_->push(transform);}\r
-void image_mixer::visit(const core::const_frame& frame){impl_->visit(frame);}\r
-void image_mixer::pop(){impl_->pop();}\r
-boost::unique_future<array<const std::uint8_t>> image_mixer::operator()(const core::video_format_desc& format_desc){return impl_->render(format_desc);}\r
-void image_mixer::begin_layer(core::blend_mode blend_mode){impl_->begin_layer(blend_mode);}\r
-void image_mixer::end_layer(){impl_->end_layer();}\r
-core::mutable_frame image_mixer::create_frame(const void* tag, const core::pixel_format_desc& desc, double frame_rate, core::field_mode field_mode) {return impl_->create_frame(tag, desc, frame_rate, field_mode);}\r
-\r
-}}}
\ No newline at end of file
+/*
+* Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
+*
+* This file is part of CasparCG (www.casparcg.com).
+*
+* CasparCG is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* CasparCG is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
+*
+* Author: Robert Nagy, ronag89@gmail.com
+*/
+#include "../../StdAfx.h"
+
+#include "image_mixer.h"
+
+#include "image_kernel.h"
+
+#include "../util/device.h"
+#include "../util/buffer.h"
+#include "../util/texture.h"
+
+#include <common/gl/gl_check.h>
+#include <common/future.h>
+#include <common/array.h>
+#include <common/linq.h>
+
+#include <core/frame/frame.h>
+#include <core/frame/frame_transform.h>
+#include <core/frame/pixel_format.h>
+#include <core/video_format.h>
+#include <core/frame/geometry.h>
+
+#include <asmlib.h>
+
+#include <GL/glew.h>
+
+#include <boost/range/algorithm_ext/erase.hpp>
+#include <boost/thread/future.hpp>
+
+#include <algorithm>
+#include <vector>
+
+namespace caspar { namespace accelerator { namespace ogl {
+
+typedef std::shared_future<std::shared_ptr<texture>> future_texture;
+
+struct item
+{
+ core::pixel_format_desc pix_desc = core::pixel_format::invalid;
+ std::vector<future_texture> textures;
+ core::image_transform transform;
+ core::frame_geometry geometry = core::frame_geometry::get_default();
+};
+
+struct layer
+{
+ std::vector<layer> sublayers;
+ std::vector<item> items;
+ core::blend_mode blend_mode;
+
+ layer(core::blend_mode blend_mode)
+ : blend_mode(blend_mode)
+ {
+ }
+};
+
+std::size_t get_max_video_format_size()
+{
+ auto format_size = [](core::video_format format) { return core::video_format_desc(format).size; };
+ return cpplinq::from(enum_constants<core::video_format>())
+ .select(std::ref(format_size))
+ .max();
+}
+
+class image_renderer
+{
+ spl::shared_ptr<device> ogl_;
+ image_kernel kernel_;
+public:
+ image_renderer(const spl::shared_ptr<device>& ogl, bool blend_modes_wanted, bool straight_alpha_wanted)
+ : ogl_(ogl)
+ , kernel_(ogl_, blend_modes_wanted, straight_alpha_wanted)
+ {
+ }
+
+ std::future<array<const std::uint8_t>> operator()(std::vector<layer> layers, const core::video_format_desc& format_desc, bool straighten_alpha)
+ {
+ if(layers.empty())
+ { // Bypass GPU with empty frame.
+ static const cache_aligned_vector<uint8_t> buffer(get_max_video_format_size(), 0);
+ return make_ready_future(array<const std::uint8_t>(buffer.data(), format_desc.size, true));
+ }
+
+ if(format_desc.field_mode != core::field_mode::progressive)
+ { // Remove jitter from still.
+ for (auto& layer : layers)
+ {
+ // Remove first field stills.
+ boost::range::remove_erase_if(layer.items, [&](const item& item)
+ {
+ return item.transform.is_still && item.transform.field_mode == format_desc.field_mode; // only us last field for stills.
+ });
+
+ // Stills are progressive
+ for (auto& item : layer.items)
+ {
+ if(item.transform.is_still)
+ item.transform.field_mode = core::field_mode::progressive;
+ }
+ }
+ }
+
+ return flatten(ogl_->begin_invoke([=]() mutable -> std::shared_future<array<const std::uint8_t>>
+ {
+ auto target_texture = ogl_->create_texture(format_desc.width, format_desc.height, 4, false);
+
+ if (format_desc.field_mode != core::field_mode::progressive)
+ {
+ draw(target_texture, layers, format_desc, core::field_mode::upper);
+ draw(target_texture, std::move(layers), format_desc, core::field_mode::lower);
+ }
+ else
+ draw(target_texture, std::move(layers), format_desc, core::field_mode::progressive);
+
+ kernel_.post_process(target_texture, straighten_alpha);
+
+ return ogl_->copy_async(target_texture);
+ }));
+ }
+
+private:
+
+ void draw(spl::shared_ptr<texture>& target_texture,
+ std::vector<layer> layers,
+ const core::video_format_desc& format_desc,
+ core::field_mode field_mode)
+ {
+ std::shared_ptr<texture> layer_key_texture;
+
+ for (auto& layer : layers)
+ {
+ draw(target_texture, layer.sublayers, format_desc, field_mode);
+ draw(target_texture, std::move(layer), layer_key_texture, format_desc, field_mode);
+ }
+ }
+
+ void draw(spl::shared_ptr<texture>& target_texture,
+ layer layer,
+ std::shared_ptr<texture>& layer_key_texture,
+ const core::video_format_desc& format_desc,
+ core::field_mode field_mode)
+ {
+ // REMOVED: This is done in frame_muxer.
+ // Fix frames
+ //BOOST_FOREACH(auto& item, layer.items)
+ //{
+ //if(std::abs(item.transform.fill_scale[1]-1.0) > 1.0/target_texture->height() ||
+ // std::abs(item.transform.fill_translation[1]) > 1.0/target_texture->height())
+ // CASPAR_LOG(warning) << L"[image_mixer] Frame should be deinterlaced. Send FILTER DEINTERLACE_BOB when creating producer.";
+
+ //if(item.pix_desc.planes.at(0).height == 480) // NTSC DV
+ //{
+ // item.transform.fill_translation[1] += 2.0/static_cast<double>(format_desc.height);
+ // item.transform.fill_scale[1] *= 1.0 - 6.0*1.0/static_cast<double>(format_desc.height);
+ //}
+
+ //// Fix field-order if needed
+ //if(item.field_mode == core::field_mode::lower && format_desc.field_mode == core::field_mode::upper)
+ // item.transform.fill_translation[1] += 1.0/static_cast<double>(format_desc.height);
+ //else if(item.field_mode == core::field_mode::upper && format_desc.field_mode == core::field_mode::lower)
+ // item.transform.fill_translation[1] -= 1.0/static_cast<double>(format_desc.height);
+ //}
+
+ // Mask out fields
+ for (auto& item : layer.items)
+ item.transform.field_mode &= field_mode;
+
+ // Remove empty items.
+ boost::range::remove_erase_if(layer.items, [&](const item& item)
+ {
+ return item.transform.field_mode == core::field_mode::empty;
+ });
+
+ if(layer.items.empty())
+ return;
+
+ std::shared_ptr<texture> local_key_texture;
+ std::shared_ptr<texture> local_mix_texture;
+
+ if(layer.blend_mode != core::blend_mode::normal)
+ {
+ auto layer_texture = ogl_->create_texture(target_texture->width(), target_texture->height(), 4, false);
+
+ for (auto& item : layer.items)
+ draw(layer_texture, std::move(item), layer_key_texture, local_key_texture, local_mix_texture, format_desc);
+
+ draw(layer_texture, std::move(local_mix_texture), core::blend_mode::normal);
+ draw(target_texture, std::move(layer_texture), layer.blend_mode);
+ }
+ else // fast path
+ {
+ for (auto& item : layer.items)
+ draw(target_texture, std::move(item), layer_key_texture, local_key_texture, local_mix_texture, format_desc);
+
+ draw(target_texture, std::move(local_mix_texture), core::blend_mode::normal);
+ }
+
+ layer_key_texture = std::move(local_key_texture);
+ }
+
+ void draw(spl::shared_ptr<texture>& target_texture,
+ item item,
+ std::shared_ptr<texture>& layer_key_texture,
+ std::shared_ptr<texture>& local_key_texture,
+ std::shared_ptr<texture>& local_mix_texture,
+ const core::video_format_desc& format_desc)
+ {
+ draw_params draw_params;
+ draw_params.pix_desc = std::move(item.pix_desc);
+ draw_params.transform = std::move(item.transform);
+ draw_params.geometry = item.geometry;
+ draw_params.aspect_ratio = static_cast<double>(format_desc.square_width) / static_cast<double>(format_desc.square_height);
+
+ for (auto& future_texture : item.textures)
+ draw_params.textures.push_back(spl::make_shared_ptr(future_texture.get()));
+
+ if(item.transform.is_key)
+ {
+ local_key_texture = local_key_texture ? local_key_texture : ogl_->create_texture(target_texture->width(), target_texture->height(), 1, draw_params.transform.use_mipmap);
+
+ draw_params.background = local_key_texture;
+ draw_params.local_key = nullptr;
+ draw_params.layer_key = nullptr;
+
+ kernel_.draw(std::move(draw_params));
+ }
+ else if(item.transform.is_mix)
+ {
+ local_mix_texture = local_mix_texture ? local_mix_texture : ogl_->create_texture(target_texture->width(), target_texture->height(), 4, draw_params.transform.use_mipmap);
+
+ draw_params.background = local_mix_texture;
+ draw_params.local_key = std::move(local_key_texture);
+ draw_params.layer_key = layer_key_texture;
+
+ draw_params.keyer = keyer::additive;
+
+ kernel_.draw(std::move(draw_params));
+ }
+ else
+ {
+ draw(target_texture, std::move(local_mix_texture), core::blend_mode::normal);
+
+ draw_params.background = target_texture;
+ draw_params.local_key = std::move(local_key_texture);
+ draw_params.layer_key = layer_key_texture;
+
+ kernel_.draw(std::move(draw_params));
+ }
+ }
+
+ void draw(spl::shared_ptr<texture>& target_texture,
+ std::shared_ptr<texture>&& source_buffer,
+ core::blend_mode blend_mode = core::blend_mode::normal)
+ {
+ if(!source_buffer)
+ return;
+
+ draw_params draw_params;
+ draw_params.pix_desc.format = core::pixel_format::bgra;
+ draw_params.pix_desc.planes = { core::pixel_format_desc::plane(source_buffer->width(), source_buffer->height(), 4) };
+ draw_params.textures = { spl::make_shared_ptr(source_buffer) };
+ draw_params.transform = core::image_transform();
+ draw_params.blend_mode = blend_mode;
+ draw_params.background = target_texture;
+ draw_params.geometry = core::frame_geometry::get_default();
+
+ kernel_.draw(std::move(draw_params));
+ }
+};
+
+struct image_mixer::impl : public core::frame_factory
+{
+ spl::shared_ptr<device> ogl_;
+ image_renderer renderer_;
+ std::vector<core::image_transform> transform_stack_;
+ std::vector<layer> layers_; // layer/stream/items
+ std::vector<layer*> layer_stack_;
+public:
+ impl(const spl::shared_ptr<device>& ogl, bool blend_modes_wanted, bool straight_alpha_wanted, int channel_id)
+ : ogl_(ogl)
+ , renderer_(ogl, blend_modes_wanted, straight_alpha_wanted)
+ , transform_stack_(1)
+ {
+ CASPAR_LOG(info) << L"Initialized OpenGL Accelerated GPU Image Mixer for channel " << channel_id;
+ }
+
+ void push(const core::frame_transform& transform)
+ {
+ auto previous_layer_depth = transform_stack_.back().layer_depth;
+ transform_stack_.push_back(transform_stack_.back() * transform.image_transform);
+ auto new_layer_depth = transform_stack_.back().layer_depth;
+
+ if (previous_layer_depth < new_layer_depth)
+ {
+ layer new_layer(transform_stack_.back().blend_mode);
+
+ if (layer_stack_.empty())
+ {
+ layers_.push_back(std::move(new_layer));
+ layer_stack_.push_back(&layers_.back());
+ }
+ else
+ {
+ layer_stack_.back()->sublayers.push_back(std::move(new_layer));
+ layer_stack_.push_back(&layer_stack_.back()->sublayers.back());
+ }
+ }
+
+ }
+
+ void visit(const core::const_frame& frame)
+ {
+ if(frame.pixel_format_desc().format == core::pixel_format::invalid)
+ return;
+
+ if(frame.pixel_format_desc().planes.empty())
+ return;
+
+ if(transform_stack_.back().field_mode == core::field_mode::empty)
+ return;
+
+ item item;
+ item.pix_desc = frame.pixel_format_desc();
+ item.transform = transform_stack_.back();
+ item.geometry = frame.geometry();
+
+ // NOTE: Once we have copied the arrays they are no longer valid for reading!!! Check for alternative solution e.g. transfer with AMD_pinned_memory.
+ for(int n = 0; n < static_cast<int>(item.pix_desc.planes.size()); ++n)
+ item.textures.push_back(ogl_->copy_async(frame.image_data(n), item.pix_desc.planes[n].width, item.pix_desc.planes[n].height, item.pix_desc.planes[n].stride, item.transform.use_mipmap));
+
+ layer_stack_.back()->items.push_back(item);
+ }
+
+ void pop()
+ {
+ transform_stack_.pop_back();
+ layer_stack_.resize(transform_stack_.back().layer_depth);
+ }
+
+ std::future<array<const std::uint8_t>> render(const core::video_format_desc& format_desc, bool straighten_alpha)
+ {
+ return renderer_(std::move(layers_), format_desc, straighten_alpha);
+ }
+
+ core::mutable_frame create_frame(const void* tag, const core::pixel_format_desc& desc, const core::audio_channel_layout& channel_layout) override
+ {
+ std::vector<array<std::uint8_t>> buffers;
+ for (auto& plane : desc.planes)
+ buffers.push_back(ogl_->create_array(plane.size));
+
+ return core::mutable_frame(std::move(buffers), core::mutable_audio_buffer(), tag, desc, channel_layout);
+ }
+
+ int get_max_frame_size() override
+ {
+ return ogl_->invoke([]
+ {
+ GLint64 params[1];
+ glGetInteger64v(GL_MAX_TEXTURE_SIZE, params);
+ return static_cast<int>(params[0]);
+ });
+ }
+};
+
+image_mixer::image_mixer(const spl::shared_ptr<device>& ogl, bool blend_modes_wanted, bool straight_alpha_wanted, int channel_id) : impl_(new impl(ogl, blend_modes_wanted, straight_alpha_wanted, channel_id)){}
+image_mixer::~image_mixer(){}
+void image_mixer::push(const core::frame_transform& transform){impl_->push(transform);}
+void image_mixer::visit(const core::const_frame& frame){impl_->visit(frame);}
+void image_mixer::pop(){impl_->pop();}
+int image_mixer::get_max_frame_size() { return impl_->get_max_frame_size(); }
+std::future<array<const std::uint8_t>> image_mixer::operator()(const core::video_format_desc& format_desc, bool straighten_alpha){return impl_->render(format_desc, straighten_alpha);}
+core::mutable_frame image_mixer::create_frame(const void* tag, const core::pixel_format_desc& desc, const core::audio_channel_layout& channel_layout) {return impl_->create_frame(tag, desc, channel_layout);}
+
+}}}
projects / casparcg / blobdiff