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1 /* | |
2 * libjingle | |
3 * Copyright 2014 Google Inc. | |
4 * | |
5 * Redistribution and use in source and binary forms, with or without | |
6 * modification, are permitted provided that the following conditions are met: | |
7 * | |
8 * 1. Redistributions of source code must retain the above copyright notice, | |
9 * this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
11 * this list of conditions and the following disclaimer in the documentation | |
12 * and/or other materials provided with the distribution. | |
13 * 3. The name of the author may not be used to endorse or promote products | |
14 * derived from this software without specific prior written permission. | |
15 * | |
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
26 */ | |
27 | |
28 #ifndef TALK_MEDIA_BASE_VIDEOFRAMEFACTORY_H_ | |
29 #define TALK_MEDIA_BASE_VIDEOFRAMEFACTORY_H_ | |
30 | |
31 #include "talk/media/base/videoframe.h" | |
32 #include "webrtc/base/scoped_ptr.h" | |
33 | |
34 namespace cricket { | |
35 | |
36 struct CapturedFrame; | |
37 class VideoFrame; | |
38 | |
39 // Creates cricket::VideoFrames, or a subclass of cricket::VideoFrame | |
40 // depending on the subclass of VideoFrameFactory. | |
41 class VideoFrameFactory { | |
42 public: | |
43 VideoFrameFactory() : apply_rotation_(true) {} | |
44 virtual ~VideoFrameFactory() {} | |
45 | |
46 // The returned frame aliases the aliased_frame if the input color | |
47 // space allows for aliasing, otherwise a color conversion will | |
48 // occur. Returns NULL if conversion fails. | |
49 | |
50 // The returned frame will be a center crop of |input_frame| with | |
51 // size |cropped_width| x |cropped_height|. | |
52 virtual VideoFrame* CreateAliasedFrame(const CapturedFrame* input_frame, | |
53 int cropped_width, | |
54 int cropped_height) const = 0; | |
55 | |
56 // The returned frame will be a center crop of |input_frame| with size | |
57 // |cropped_width| x |cropped_height|, scaled to |output_width| x | |
58 // |output_height|. | |
59 virtual VideoFrame* CreateAliasedFrame(const CapturedFrame* input_frame, | |
60 int cropped_input_width, | |
61 int cropped_input_height, | |
62 int output_width, | |
63 int output_height) const; | |
64 | |
65 void SetApplyRotation(bool enable) { apply_rotation_ = enable; } | |
66 | |
67 protected: | |
68 bool apply_rotation_; | |
69 | |
70 private: | |
71 // An internal frame buffer to avoid reallocations. It is mutable because it | |
72 // does not affect behaviour, only performance. | |
73 mutable rtc::scoped_ptr<VideoFrame> output_frame_; | |
74 }; | |
75 | |
76 } // namespace cricket | |
77 | |
78 #endif // TALK_MEDIA_BASE_VIDEOFRAMEFACTORY_H_ | |
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