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1 /* | |
2 * Copyright 2016 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 #ifndef WEBRTC_SDK_OBJC_FRAMEWORK_CLASSES_COREVIDEO_FRAME_BUFFER_H_ | |
12 #define WEBRTC_SDK_OBJC_FRAMEWORK_CLASSES_COREVIDEO_FRAME_BUFFER_H_ | |
13 | |
14 #include <CoreVideo/CoreVideo.h> | |
15 | |
16 #include <vector> | |
17 | |
18 #include "webrtc/common_video/include/video_frame_buffer.h" | |
19 | |
20 namespace webrtc { | |
21 | |
22 class CoreVideoFrameBuffer : public NativeHandleBuffer { | |
23 public: | |
24 explicit CoreVideoFrameBuffer(CVPixelBufferRef pixel_buffer); | |
25 CoreVideoFrameBuffer(CVPixelBufferRef pixel_buffer, | |
26 int adapted_width, | |
27 int adapted_height, | |
28 int crop_width, | |
29 int crop_height, | |
30 int crop_x, | |
31 int crop_y); | |
32 ~CoreVideoFrameBuffer() override; | |
33 | |
34 rtc::scoped_refptr<VideoFrameBuffer> NativeToI420Buffer() override; | |
35 // Returns true if the internal pixel buffer needs to be cropped. | |
36 bool RequiresCropping() const; | |
37 // Crop and scales the internal pixel buffer to the output pixel buffer. The | |
38 // tmp buffer is used for intermediary splitting the UV channels. This | |
39 // function returns true if successful. | |
40 bool CropAndScaleTo(std::vector<uint8_t>* tmp_buffer, | |
41 CVPixelBufferRef output_pixel_buffer) const; | |
42 | |
43 private: | |
44 CVPixelBufferRef pixel_buffer_; | |
45 // buffer_width/height is the actual pixel buffer resolution. The width/height | |
46 // in NativeHandleBuffer, i.e. width()/height(), is the resolution we will | |
47 // scale to in NativeToI420Buffer(). Cropping happens before scaling, so: | |
48 // buffer_width >= crop_width >= width(). | |
49 const int buffer_width_; | |
50 const int buffer_height_; | |
51 const int crop_width_; | |
52 const int crop_height_; | |
53 const int crop_x_; | |
54 const int crop_y_; | |
55 }; | |
56 | |
57 } // namespace webrtc | |
58 | |
59 #endif // WEBRTC_SDK_OBJC_FRAMEWORK_CLASSES_COREVIDEO_FRAME_BUFFER_H_ | |
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