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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_VIDEO_DEVICE_H_ | |
| 9 #define CONTENT_COMMON_GPU_MEDIA_TEGRA_V4L2_VIDEO_DEVICE_H_ | |
| 10 | |
| 11 #include "content/common/gpu/media/v4l2_video_device.h" | |
| 12 #include "ui/gl/gl_bindings.h" | |
| 13 | |
| 14 namespace content { | |
| 15 | |
| 16 // This class implements the V4L2Device interface for Tegra platform. | |
| 17 // It interfaces with libtegrav4l2 library which provides API that exhibit the | |
| 18 // V4L2 specification via the library API instead of system calls. | |
| 19 class TegraV4L2Device : public V4L2Device { | |
| 20 public: | |
| 21 explicit TegraV4L2Device(Type type); | |
| 22 | |
| 23 int Ioctl(int flags, void* arg) override; | |
| 24 bool Poll(bool poll_device, bool* event_pending) override; | |
| 25 bool SetDevicePollInterrupt() override; | |
| 26 bool ClearDevicePollInterrupt() override; | |
| 27 void* Mmap(void* addr, | |
| 28 unsigned int len, | |
| 29 int prot, | |
| 30 int flags, | |
| 31 unsigned int offset) override; | |
| 32 void Munmap(void* addr, unsigned int len) override; | |
| 33 bool Initialize() override; | |
| 34 bool CanCreateEGLImageFrom(uint32_t v4l2_pixfmt) override; | |
| 35 EGLImageKHR CreateEGLImage(EGLDisplay egl_display, | |
| 36 EGLContext egl_context, | |
| 37 GLuint texture_id, | |
| 38 gfx::Size frame_buffer_size, | |
| 39 unsigned int buffer_index, | |
| 40 uint32_t v4l2_pixfmt, | |
| 41 size_t num_v4l2_planes); | |
| 42 EGLBoolean DestroyEGLImage(EGLDisplay egl_display, | |
| 43 EGLImageKHR egl_image) override; | |
| 44 GLenum GetTextureTarget() override; | |
| 45 uint32 PreferredInputFormat() override; | |
| 46 | |
| 47 private: | |
| 48 ~TegraV4L2Device() override; | |
| 49 const Type type_; | |
| 50 | |
| 51 // The actual device fd. | |
| 52 int device_fd_; | |
| 53 | |
| 54 DISALLOW_COPY_AND_ASSIGN(TegraV4L2Device); | |
| 55 }; | |
| 56 | |
| 57 } // namespace content | |
| 58 | |
| 59 #endif // CONTENT_COMMON_GPU_MEDIA_TEGRA_V4L2_VIDEO_DEVICE_H_ | |
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