Renamed v4l2_video_device.*->v4l2_device.* and generic_v4l2_video_device.*->generic_v4l2_device.* a…

content/common/gpu/media/v4l2_video_device.h

-// 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 defines the V4L2Device interface which is used by the
-// V4L2DecodeAccelerator class to delegate/pass the device specific
-// handling of any of the functionalities.
-
-#ifndef CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DEVICE_H_
-#define CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DEVICE_H_
-
-#include "base/memory/ref_counted.h"
-#include "content/common/content_export.h"
-#include "media/base/video_decoder_config.h"
-#include "media/base/video_frame.h"
-#include "ui/gfx/geometry/size.h"
-#include "ui/gl/gl_bindings.h"
-
-namespace content {
-
-class CONTENT_EXPORT V4L2Device
-    : public base::RefCountedThreadSafe<V4L2Device> {
- public:
-  // Utility format conversion functions
-  static media::VideoFrame::Format V4L2PixFmtToVideoFrameFormat(uint32 format);
-  static uint32 VideoFrameFormatToV4L2PixFmt(media::VideoFrame::Format format);
-  static uint32 VideoCodecProfileToV4L2PixFmt(media::VideoCodecProfile profile,
-                                              bool slice_based);
-  static uint32_t V4L2PixFmtToDrmFormat(uint32_t format);
-  // Convert format requirements requested by a V4L2 device to gfx::Size.
-  static gfx::Size CodedSizeFromV4L2Format(struct v4l2_format format);
-
-  enum Type {
-    kDecoder,
-    kEncoder,
-    kImageProcessor,
-  };
-
-  // Creates and initializes an appropriate V4L2Device of |type| for the
-  // current platform and returns a scoped_ptr<V4L2Device> on success, or NULL.
-  static scoped_refptr<V4L2Device> Create(Type type);
-
-  // Parameters and return value are the same as for the standard ioctl() system
-  // call.
-  virtual int Ioctl(int request, void* arg) = 0;
-
-  // This method sleeps until either:
-  // - SetDevicePollInterrupt() is called (on another thread),
-  // - |poll_device| is true, and there is new data to be read from the device,
-  //   or an event from the device has arrived; in the latter case
-  //   |*event_pending| will be set to true.
-  // Returns false on error, true otherwise.
-  // This method should be called from a separate thread.
-  virtual bool Poll(bool poll_device, bool* event_pending) = 0;
-
-  // These methods are used to interrupt the thread sleeping on Poll() and force
-  // it to return regardless of device state, which is usually when the client
-  // is no longer interested in what happens with the device (on cleanup,
-  // client state change, etc.). When SetDevicePollInterrupt() is called, Poll()
-  // will return immediately, and any subsequent calls to it will also do so
-  // until ClearDevicePollInterrupt() is called.
-  virtual bool SetDevicePollInterrupt() = 0;
-  virtual bool ClearDevicePollInterrupt() = 0;
-
-  // Wrappers for standard mmap/munmap system calls.
-  virtual void* Mmap(void* addr,
-                     unsigned int len,
-                     int prot,
-                     int flags,
-                     unsigned int offset) = 0;
-  virtual void Munmap(void* addr, unsigned int len) = 0;
-
-  // Initializes the V4L2Device to operate as a device of |type|.
-  // Returns true on success.
-  virtual bool Initialize() = 0;
-
-  // Return true if the given V4L2 pixfmt can be used in CreateEGLImage()
-  // for the current platform.
-  virtual bool CanCreateEGLImageFrom(uint32_t v4l2_pixfmt) = 0;
-
-  // Creates an EGLImageKHR since each V4L2Device may use a different method of
-  // acquiring one and associating it to the given texture. The texture_id is
-  // used to bind the texture to the returned EGLImageKHR. buffer_index can be
-  // used to associate the returned EGLImageKHR by the underlying V4L2Device
-  // implementation.
-  virtual EGLImageKHR CreateEGLImage(EGLDisplay egl_display,
-                                     EGLContext egl_context,
-                                     GLuint texture_id,
-                                     gfx::Size frame_buffer_size,
-                                     unsigned int buffer_index,
-                                     uint32_t v4l2_pixfmt,
-                                     size_t num_v4l2_planes) = 0;
-
-  // Destroys the EGLImageKHR.
-  virtual EGLBoolean DestroyEGLImage(EGLDisplay egl_display,
-                                     EGLImageKHR egl_image) = 0;
-
-  // Returns the supported texture target for the V4L2Device.
-  virtual GLenum GetTextureTarget() = 0;
-
-  // Returns the preferred V4L2 input format or 0 if don't care.
-  virtual uint32 PreferredInputFormat() = 0;
-
- protected:
-  friend class base::RefCountedThreadSafe<V4L2Device>;
-  virtual ~V4L2Device();
-};
-
-}  //  namespace content
-
-#endif  //  CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DEVICE_H_