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1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef MEDIA_VIDEO_CAPTURE_LINUX_V4L2_CAPTURE_DELEGATE_MULTI_PLANE_H_ | |
6 #define MEDIA_VIDEO_CAPTURE_LINUX_V4L2_CAPTURE_DELEGATE_MULTI_PLANE_H_ | |
7 | |
8 #include "base/memory/ref_counted.h" | |
9 #include "media/video/capture/linux/v4l2_capture_delegate.h" | |
10 | |
11 #if defined(OS_OPENBSD) | |
12 #error "OpenBSD does not support MPlane capture API." | |
13 #endif | |
14 | |
15 namespace base { | |
16 class SingleThreadTaskRunner; | |
17 } // namespace base | |
18 | |
19 namespace media { | |
20 | |
21 // V4L2 specifics for MPLANE API. | |
22 class V4L2CaptureDelegateMultiPlane final : public V4L2CaptureDelegate { | |
23 public: | |
24 V4L2CaptureDelegateMultiPlane( | |
25 const VideoCaptureDevice::Name& device_name, | |
26 const scoped_refptr<base::SingleThreadTaskRunner>& v4l2_task_runner, | |
27 int power_line_frequency); | |
28 | |
29 private: | |
30 // BufferTracker derivation to implement construction semantics for MPLANE. | |
31 class BufferTrackerMPlane final : public BufferTracker { | |
32 public: | |
33 bool Init(int fd, const v4l2_buffer& buffer) override; | |
34 | |
35 private: | |
36 ~BufferTrackerMPlane() override {} | |
37 }; | |
38 | |
39 ~V4L2CaptureDelegateMultiPlane() override; | |
40 | |
41 // V4L2CaptureDelegate virtual methods implementation. | |
42 scoped_refptr<BufferTracker> CreateBufferTracker() const override; | |
43 bool FillV4L2Format(v4l2_format* format, | |
44 uint32_t width, | |
45 uint32_t height, | |
46 uint32_t pixelformat_fourcc) const override; | |
47 void FinishFillingV4L2Buffer(v4l2_buffer* buffer) const override; | |
48 void SendBuffer(const scoped_refptr<BufferTracker>& buffer_tracker, | |
49 const v4l2_format& format) const override; | |
50 | |
51 // Vector to allocate and track as many v4l2_plane structs as planes, needed | |
52 // for v4l2_buffer.m.planes. This is a scratchpad marked mutable to enable | |
53 // using it in otherwise const methods. | |
54 mutable std::vector<struct v4l2_plane> v4l2_planes_; | |
55 }; | |
56 | |
57 } // namespace media | |
58 | |
59 #endif // MEDIA_VIDEO_CAPTURE_LINUX_V4L2_CAPTURE_DELEGATE_SINGLE_PLANE_H_ | |
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