| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // This file contains the implementation of GenericV4L2Device used on |
| // platforms, which provide generic V4L2 video codec devices. |
| |
| #ifndef MEDIA_GPU_GENERIC_V4L2_DEVICE_H_ |
| #define MEDIA_GPU_GENERIC_V4L2_DEVICE_H_ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include "base/files/scoped_file.h" |
| #include "base/macros.h" |
| #include "media/gpu/v4l2_device.h" |
| |
| namespace media { |
| |
| class GenericV4L2Device : public V4L2Device { |
| public: |
| explicit GenericV4L2Device(Type type); |
| |
| // V4L2Device implementation. |
| int Ioctl(int request, void* arg) override; |
| bool Poll(bool poll_device, bool* event_pending) override; |
| bool SetDevicePollInterrupt() override; |
| bool ClearDevicePollInterrupt() override; |
| void* Mmap(void* addr, |
| unsigned int len, |
| int prot, |
| int flags, |
| unsigned int offset) override; |
| void Munmap(void* addr, unsigned int len) override; |
| bool Initialize() override; |
| |
| std::vector<base::ScopedFD> GetDmabufsForV4L2Buffer( |
| int index, |
| size_t num_planes, |
| enum v4l2_buf_type type) override; |
| |
| bool CanCreateEGLImageFrom(uint32_t v4l2_pixfmt) override; |
| EGLImageKHR CreateEGLImage( |
| EGLDisplay egl_display, |
| EGLContext egl_context, |
| GLuint texture_id, |
| const gfx::Size& size, |
| unsigned int buffer_index, |
| uint32_t v4l2_pixfmt, |
| const std::vector<base::ScopedFD>& dmabuf_fds) override; |
| |
| EGLBoolean DestroyEGLImage(EGLDisplay egl_display, |
| EGLImageKHR egl_image) override; |
| GLenum GetTextureTarget() override; |
| uint32_t PreferredInputFormat() override; |
| |
| private: |
| ~GenericV4L2Device() override; |
| |
| // The actual device fd. |
| base::ScopedFD device_fd_; |
| |
| // eventfd fd to signal device poll thread when its poll() should be |
| // interrupted. |
| base::ScopedFD device_poll_interrupt_fd_; |
| |
| // Use libv4l2 when operating |device_fd_|. |
| bool use_libv4l2_; |
| |
| DISALLOW_COPY_AND_ASSIGN(GenericV4L2Device); |
| |
| // Lazily initialize static data after sandbox is enabled. Return false on |
| // init failure. |
| static bool PostSandboxInitialization(); |
| }; |
| } // namespace media |
| |
| #endif // MEDIA_GPU_GENERIC_V4L2_DEVICE_H_ |