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 "blend_modes.h"
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26 #include <common/forward.h>
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27 #include <common/spl/memory.h>
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29 #include <core/video_format.h>
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30 #include <core/frame/frame_visitor.h>
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32 #include <boost/range.hpp>
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36 FORWARD1(boost, template<typename> class shared_future);
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37 FORWARD2(caspar, core, class data_frame);
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38 FORWARD2(caspar, core, struct pixel_format_desc);
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40 namespace caspar { namespace core {
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43 class image_mixer : public frame_visitor
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45 image_mixer(const image_mixer&);
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46 image_mixer& operator=(const image_mixer&);
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54 virtual ~image_mixer(){}
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58 virtual void push(const struct frame_transform& frame) = 0;
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59 virtual void visit(const class data_frame& frame) = 0;
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60 virtual void pop() = 0;
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62 virtual void begin_layer(blend_mode blend_mode) = 0;
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63 virtual void end_layer() = 0;
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65 virtual boost::shared_future<boost::iterator_range<const uint8_t*>> operator()(const struct video_format_desc& format_desc) = 0;
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67 virtual spl::unique_ptr<core::data_frame> create_frame(const void* tag, const struct pixel_format_desc& desc, double frame_rate, core::field_mode field_mode) = 0;
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