2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
4 * This file is part of CasparCG (www.casparcg.com).
6 * CasparCG is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * CasparCG is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
19 * Author: Robert Nagy, ronag89@gmail.com
24 #include "blend_modes.h"
26 #include <common/forward.h>
27 #include <common/future_fwd.h>
28 #include <common/memory.h>
30 #include <core/video_format.h>
31 #include <core/frame/frame_visitor.h>
32 #include <core/frame/frame_factory.h>
33 #include <core/frame/frame.h>
35 #include <boost/range.hpp>
39 FORWARD2(caspar, core, struct pixel_format_desc);
41 namespace caspar { namespace core {
44 class image_mixer : public frame_visitor
45 , public frame_factory
47 image_mixer(const image_mixer&);
48 image_mixer& operator=(const image_mixer&);
56 virtual ~image_mixer(){}
60 virtual void push(const struct frame_transform& frame) = 0;
61 virtual void visit(const class const_frame& frame) = 0;
62 virtual void pop() = 0;
64 virtual void begin_layer(blend_mode blend_mode) = 0;
65 virtual void end_layer() = 0;
67 virtual boost::unique_future<array<const std::uint8_t>> operator()(const struct video_format_desc& format_desc) = 0;
69 virtual class mutable_frame create_frame(const void* tag, const struct pixel_format_desc& desc) = 0;