Music Hub  ..
A session-wide music playback service
sink.h
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1 /*
2  * Copyright © 2014 Canonical Ltd.
3  *
4  * This program is free software: you can redistribute it and/or modify it
5  * under the terms of the GNU Lesser General Public License version 3,
6  * as published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU Lesser General Public License for more details.
12  *
13  * You should have received a copy of the GNU Lesser General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  *
16  * Authored by: Thomas Voß <thomas.voss@canonical.com>
17  */
18 #ifndef CORE_UBUNTU_MEDIA_VIDEO_SINK_H_
19 #define CORE_UBUNTU_MEDIA_VIDEO_SINK_H_
20 
21 #include <core/signal.h>
22 
23 #include <memory>
24 
25 namespace core
26 {
27 namespace ubuntu
28 {
29 namespace media
30 {
31 namespace video
32 {
36 struct Sink
37 {
39  typedef std::shared_ptr<Sink> Ptr;
40 
42  Sink() = default;
43  Sink(const Sink&) = delete;
44  virtual ~Sink() = default;
45 
46  Sink& operator=(const Sink&) = delete;
53  virtual const core::Signal<void>& frame_available() const = 0;
54 
61  virtual bool transformation_matrix(float* matrix) const = 0;
62 
69  virtual bool swap_buffers() const = 0;
70 };
71 }
72 }
73 }
74 }
75 
76 #endif // CORE_UBUNTU_MEDIA_VIDEO_SINK_H_
virtual bool transformation_matrix(float *matrix) const =0
Queries the 4x4 transformation matrix for the current frame, placing the data into 'matrix'...
Definition: player.h:33
A video sink abstracts a queue of buffers, that receives a stream of decoded video buffers from an ar...
Definition: sink.h:36
virtual const core::Signal< void > & frame_available() const =0
The signal is emitted whenever a new frame is available and a subsequent call to swap_buffers will no...
std::shared_ptr< Sink > Ptr
To save us some typing.
Definition: sink.h:39
virtual bool swap_buffers() const =0
Releases the current buffer, and consumes the next buffer in the queue, making it available for consu...