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1 /* | |
2 * Copyright (c) 2012 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 COMMON_VIDEO_PLANE_H | |
12 #define COMMON_VIDEO_PLANE_H | |
13 | |
14 #include "webrtc/base/scoped_ptr.h" | |
15 #include "webrtc/system_wrappers/include/aligned_malloc.h" | |
16 #include "webrtc/typedefs.h" | |
17 | |
18 namespace webrtc { | |
19 | |
20 // Helper class for VideoFrame: Store plane data and perform basic plane | |
21 // operations. | |
22 class Plane { | |
23 public: | |
24 Plane(); | |
25 ~Plane(); | |
26 // CreateEmptyPlane - set allocated size, actual plane size and stride: | |
27 // If current size is smaller than current size, then a buffer of sufficient | |
28 // size will be allocated. | |
29 // Return value: 0 on success ,-1 on error. | |
30 int CreateEmptyPlane(int allocated_size, int stride, int plane_size); | |
31 | |
32 // Copy the entire plane data. | |
33 // Return value: 0 on success ,-1 on error. | |
34 int Copy(const Plane& plane); | |
35 | |
36 // Copy buffer: If current size is smaller | |
37 // than current size, then a buffer of sufficient size will be allocated. | |
38 // Return value: 0 on success ,-1 on error. | |
39 int Copy(int size, int stride, const uint8_t* buffer); | |
40 | |
41 // Swap plane data. | |
42 void Swap(Plane& plane); | |
43 | |
44 // Get allocated size. | |
45 int allocated_size() const {return allocated_size_;} | |
46 | |
47 // Set actual size. | |
48 void ResetSize() {plane_size_ = 0;} | |
49 | |
50 // Return true is plane size is zero, false if not. | |
51 bool IsZeroSize() const {return plane_size_ == 0;} | |
52 | |
53 // Get stride value. | |
54 int stride() const {return stride_;} | |
55 | |
56 // Return data pointer. | |
57 const uint8_t* buffer() const {return buffer_.get();} | |
58 // Overloading with non-const. | |
59 uint8_t* buffer() {return buffer_.get();} | |
60 | |
61 private: | |
62 // Resize when needed: If current allocated size is less than new_size, buffer | |
63 // will be updated. Old data will be copied to new buffer. | |
64 // Return value: 0 on success ,-1 on error. | |
65 int MaybeResize(int new_size); | |
66 | |
67 rtc::scoped_ptr<uint8_t, AlignedFreeDeleter> buffer_; | |
68 int allocated_size_; | |
69 int plane_size_; | |
70 int stride_; | |
71 }; // Plane | |
72 | |
73 } // namespace webrtc | |
74 | |
75 #endif // COMMON_VIDEO_PLANE_H | |
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