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1 // Copyright 2014 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 // This file contains the implementation of TegraV4L2Device used on | |
6 // Tegra platform. | |
7 | |
8 #ifndef CONTENT_COMMON_GPU_MEDIA_TEGRA_V4L2_DEVICE_H_ | |
9 #define CONTENT_COMMON_GPU_MEDIA_TEGRA_V4L2_DEVICE_H_ | |
10 | |
11 #include <stddef.h> | |
12 #include <stdint.h> | |
13 | |
14 #include "base/macros.h" | |
15 #include "content/common/gpu/media/v4l2_device.h" | |
16 #include "ui/gl/gl_bindings.h" | |
17 | |
18 namespace content { | |
19 | |
20 // This class implements the V4L2Device interface for Tegra platform. | |
21 // It interfaces with libtegrav4l2 library which provides API that exhibit the | |
22 // V4L2 specification via the library API instead of system calls. | |
23 class TegraV4L2Device : public V4L2Device { | |
24 public: | |
25 explicit TegraV4L2Device(Type type); | |
26 | |
27 int Ioctl(int flags, void* arg) override; | |
28 bool Poll(bool poll_device, bool* event_pending) override; | |
29 bool SetDevicePollInterrupt() override; | |
30 bool ClearDevicePollInterrupt() override; | |
31 void* Mmap(void* addr, | |
32 unsigned int len, | |
33 int prot, | |
34 int flags, | |
35 unsigned int offset) override; | |
36 void Munmap(void* addr, unsigned int len) override; | |
37 bool Initialize() override; | |
38 std::vector<base::ScopedFD> GetDmabufsForV4L2Buffer( | |
39 int index, | |
40 size_t num_planes, | |
41 enum v4l2_buf_type type) override; | |
42 bool CanCreateEGLImageFrom(uint32_t v4l2_pixfmt) override; | |
43 EGLImageKHR CreateEGLImage( | |
44 EGLDisplay egl_display, | |
45 EGLContext egl_context, | |
46 GLuint texture_id, | |
47 const gfx::Size& size, | |
48 unsigned int buffer_index, | |
49 uint32_t v4l2_pixfmt, | |
50 const std::vector<base::ScopedFD>& dmabuf_fds) override; | |
51 EGLBoolean DestroyEGLImage(EGLDisplay egl_display, | |
52 EGLImageKHR egl_image) override; | |
53 GLenum GetTextureTarget() override; | |
54 uint32_t PreferredInputFormat() override; | |
55 | |
56 private: | |
57 ~TegraV4L2Device() override; | |
58 | |
59 // The actual device fd. | |
60 int device_fd_; | |
61 | |
62 DISALLOW_COPY_AND_ASSIGN(TegraV4L2Device); | |
63 }; | |
64 | |
65 } // namespace content | |
66 | |
67 #endif // CONTENT_COMMON_GPU_MEDIA_TEGRA_V4L2_DEVICE_H_ | |
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