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: VideoFrameFactory()43 VideoFrameFactory() : apply_rotation_(true) {} ~VideoFrameFactory()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 SetApplyRotation(bool enable)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_ 79