2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
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4 * This file is part of CasparCG (www.casparcg.com).
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6 * CasparCG is free software: you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation, either version 3 of the License, or
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9 * (at your option) any later version.
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11 * CasparCG is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
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19 * Author: Robert Nagy, ronag89@gmail.com
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24 #include <common/forward.h>
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25 #include <common/spl/memory.h>
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27 #include <core/mixer/image/blend_modes.h>
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28 #include <core/mixer/image/image_mixer.h>
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30 #include <core/frame/frame_visitor.h>
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31 #include <core/video_format.h>
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33 FORWARD1(boost, template<typename> class unique_future);
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34 FORWARD2(caspar, core, class write_frame);
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35 FORWARD2(caspar, core, struct pixel_format_desc);
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36 FORWARD2(caspar, core, struct video_format_desc);
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37 FORWARD2(caspar, core, class data_frame);
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38 FORWARD2(caspar, core, struct frame_transform);
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40 namespace caspar { namespace accelerator { namespace ogl {
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42 class image_mixer sealed : public core::image_mixer
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45 image_mixer(const spl::shared_ptr<class context>& ogl);
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47 virtual void push(const core::frame_transform& frame);
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48 virtual void visit(const core::data_frame& frame);
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51 void begin_layer(core::blend_mode blend_mode);
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54 // NOTE: Content of return future is only valid while future is valid.
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55 virtual boost::shared_future<boost::iterator_range<const uint8_t*>> operator()(const core::video_format_desc& format_desc) override;
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57 virtual spl::shared_ptr<core::write_frame> create_frame(const void* tag, const core::pixel_format_desc& desc, double frame_rate, core::field_mode field_mode) override;
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60 spl::shared_ptr<impl> impl_;
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