Add support for Tegra V4L2 VDA

content/common/gpu/media/v4l2_video_device.h

Index: content/common/gpu/media/v4l2_video_device.h
diff --git a/content/common/gpu/media/v4l2_video_device.h b/content/common/gpu/media/v4l2_video_device.h
index 92bc02fac25175b13582ea64d366c2c3b2406df4..96719a1b11377ebd200211740cadbaee12e9226d 100644
--- a/content/common/gpu/media/v4l2_video_device.h
+++ b/content/common/gpu/media/v4l2_video_device.h
@@ -9,6 +9,8 @@
 #ifndef CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DEVICE_H_
 #define CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DEVICE_H_
 
+#include "ui/gl/gl_bindings.h"
+
 namespace content {
 
 class V4L2Device {
@@ -19,7 +21,7 @@ class V4L2Device {
   // Tries to create and initialize an appropriate V4L2Device object for the
   // current platform and returns a scoped_ptr<V4L2Device> on success else
   // returns NULL.
-  static scoped_ptr<V4L2Device> Create();
+  static scoped_ptr<V4L2Device> Create(EGLContext egl_context);
 
   // Parameters and return value are the same as for the standard ioctl() system
   // call.
@@ -50,6 +52,13 @@ class V4L2Device {
                      int flags,
                      unsigned int offset) = 0;
   virtual void Munmap(void* addr, unsigned int len) = 0;
+
+  virtual EGLImageKHR CreateEGLImage(EGLDisplay egl_display,

[Ami GONE FROM CHROMIUM, 2014/02/07 09:09:30]

Need to document these methods & parameters.
I'm especially unclear at this point in the review what |buffer_index| is
supposed to be (I see how it's used, but I don't understand what it means in the
context of a generic V4L2Device).

[shivdasp, 2014/02/10 13:31:17]

This method exists because of the difference in how Exynos and Tegra create the
EglImages. See previous comments.

On 2014/02/07 09:09:30, Ami Fischman wrote:

+                                     EGLint attrib[],
+                                     unsigned int texture_id,
+                                     unsigned int buffer_index) = 0;
+
+  virtual unsigned int GetTextureTarget() = 0;
 };
 }  //  namespace content