| jlmiller@webrtc.org | 5f93d0a | 2015-01-20 21:36:13 +0000 | [diff] [blame] | 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 | */ |
| magjed@webrtc.org | f58b455 | 2014-11-19 18:09:14 +0000 | [diff] [blame] | 27 | |
| 28 | #include "talk/media/base/videoframefactory.h" |
| 29 | |
| 30 | #include "talk/media/base/videocapturer.h" |
| 31 | |
| 32 | namespace cricket { |
| 33 | |
| 34 | VideoFrame* VideoFrameFactory::CreateAliasedFrame( |
| 35 | const CapturedFrame* input_frame, |
| 36 | int cropped_input_width, |
| 37 | int cropped_input_height, |
| 38 | int output_width, |
| 39 | int output_height) const { |
| 40 | rtc::scoped_ptr<VideoFrame> cropped_input_frame(CreateAliasedFrame( |
| 41 | input_frame, cropped_input_width, cropped_input_height)); |
| 42 | |
| 43 | if (cropped_input_width == output_width && |
| 44 | cropped_input_height == output_height) { |
| 45 | // No scaling needed. |
| 46 | return cropped_input_frame.release(); |
| 47 | } |
| 48 | |
| magjed@webrtc.org | 50b2295 | 2015-03-02 10:03:47 +0000 | [diff] [blame^] | 49 | // Create and stretch the output frame if it has not been created yet, is |
| 50 | // still in use by others, or its size is not same as the expected. |
| 51 | if (!output_frame_ || !output_frame_->IsExclusive() || |
| magjed@webrtc.org | f58b455 | 2014-11-19 18:09:14 +0000 | [diff] [blame] | 52 | output_frame_->GetWidth() != static_cast<size_t>(output_width) || |
| 53 | output_frame_->GetHeight() != static_cast<size_t>(output_height)) { |
| 54 | output_frame_.reset( |
| 55 | cropped_input_frame->Stretch(output_width, output_height, true, true)); |
| 56 | if (!output_frame_) { |
| 57 | LOG(LS_WARNING) << "Failed to stretch frame to " << output_width << "x" |
| 58 | << output_height; |
| 59 | return NULL; |
| 60 | } |
| 61 | } else { |
| 62 | cropped_input_frame->StretchToFrame(output_frame_.get(), true, true); |
| 63 | output_frame_->SetElapsedTime(cropped_input_frame->GetElapsedTime()); |
| 64 | output_frame_->SetTimeStamp(cropped_input_frame->GetTimeStamp()); |
| 65 | } |
| 66 | return output_frame_->Copy(); |
| 67 | } |
| 68 | |
| 69 | } // namespace cricket |