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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 GenericV4L2Device used on | |
| 6 // platforms, which provide generic V4L2 video codec devices. | |
| 7 | |
| 8 #ifndef CONTENT_COMMON_GPU_MEDIA_GENERIC_V4L2_DEVICE_H_ | |
| 9 #define CONTENT_COMMON_GPU_MEDIA_GENERIC_V4L2_DEVICE_H_ | |
| 10 | |
| 11 #include <stddef.h> | |
| 12 #include <stdint.h> | |
| 13 | |
| 14 #include "base/files/scoped_file.h" | |
| 15 #include "base/macros.h" | |
| 16 #include "content/common/gpu/media/v4l2_device.h" | |
| 17 | |
| 18 namespace content { | |
| 19 | |
| 20 class GenericV4L2Device : public V4L2Device { | |
| 21 public: | |
| 22 explicit GenericV4L2Device(Type type); | |
| 23 | |
| 24 // V4L2Device implementation. | |
| 25 int Ioctl(int request, void* arg) override; | |
| 26 bool Poll(bool poll_device, bool* event_pending) override; | |
| 27 bool SetDevicePollInterrupt() override; | |
| 28 bool ClearDevicePollInterrupt() override; | |
| 29 void* Mmap(void* addr, | |
| 30 unsigned int len, | |
| 31 int prot, | |
| 32 int flags, | |
| 33 unsigned int offset) override; | |
| 34 void Munmap(void* addr, unsigned int len) override; | |
| 35 bool Initialize() override; | |
| 36 | |
| 37 std::vector<base::ScopedFD> GetDmabufsForV4L2Buffer( | |
| 38 int index, | |
| 39 size_t num_planes, | |
| 40 enum v4l2_buf_type type) override; | |
| 41 | |
| 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 | |
| 52 EGLBoolean DestroyEGLImage(EGLDisplay egl_display, | |
| 53 EGLImageKHR egl_image) override; | |
| 54 GLenum GetTextureTarget() override; | |
| 55 uint32_t PreferredInputFormat() override; | |
| 56 | |
| 57 private: | |
| 58 ~GenericV4L2Device() override; | |
| 59 | |
| 60 // The actual device fd. | |
| 61 base::ScopedFD device_fd_; | |
| 62 | |
| 63 // eventfd fd to signal device poll thread when its poll() should be | |
| 64 // interrupted. | |
| 65 base::ScopedFD device_poll_interrupt_fd_; | |
| 66 | |
| 67 // Use libv4l2 when operating |device_fd_|. | |
| 68 bool use_libv4l2_; | |
| 69 | |
| 70 DISALLOW_COPY_AND_ASSIGN(GenericV4L2Device); | |
| 71 | |
| 72 // Lazily initialize static data after sandbox is enabled. Return false on | |
| 73 // init failure. | |
| 74 static bool PostSandboxInitialization(); | |
| 75 }; | |
| 76 } // namespace content | |
| 77 | |
| 78 #endif // CONTENT_COMMON_GPU_MEDIA_GENERIC_V4L2_DEVICE_H_ | |
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