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1 /* | |
2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license | |
5 * that can be found in the LICENSE file in the root of the source | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 | |
11 #include "webrtc/media/base/videoframefactory.h" | |
12 | |
13 #include <algorithm> | |
14 #include "webrtc/media/base/videocapturer.h" | |
15 | |
16 namespace cricket { | |
17 | |
18 VideoFrame* VideoFrameFactory::CreateAliasedFrame( | |
19 const CapturedFrame* input_frame, | |
20 int cropped_input_width, | |
21 int cropped_input_height, | |
22 int output_width, | |
23 int output_height) const { | |
24 std::unique_ptr<VideoFrame> cropped_input_frame(CreateAliasedFrame( | |
25 input_frame, cropped_input_width, cropped_input_height)); | |
26 if (!cropped_input_frame) | |
27 return nullptr; | |
28 | |
29 if (cropped_input_width == output_width && | |
30 cropped_input_height == output_height) { | |
31 // No scaling needed. | |
32 return cropped_input_frame.release(); | |
33 } | |
34 | |
35 // If the frame is rotated, we need to switch the width and height. | |
36 if (apply_rotation_ && | |
37 (input_frame->rotation == webrtc::kVideoRotation_90 || | |
38 input_frame->rotation == webrtc::kVideoRotation_270)) { | |
39 std::swap(output_width, output_height); | |
40 } | |
41 | |
42 rtc::scoped_refptr<webrtc::I420Buffer> scaled_buffer( | |
43 pool_.CreateBuffer(output_width, output_height)); | |
44 scaled_buffer->CropAndScaleFrom(cropped_input_frame->video_frame_buffer()); | |
45 | |
46 return new WebRtcVideoFrame(scaled_buffer, cropped_input_frame->rotation(), | |
47 cropped_input_frame->timestamp_us(), | |
48 cropped_input_frame->transport_frame_id()); | |
49 } | |
50 | |
51 } // namespace cricket | |
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