V4L2(S)VDA: Check if device handles profile for supported fourccs on init.

content/common/gpu/media/v4l2_device.h

Index: content/common/gpu/media/v4l2_device.h
diff --git a/content/common/gpu/media/v4l2_device.h b/content/common/gpu/media/v4l2_device.h
index df6b59822a6b56df58b565fb7a877f1ed01107a8..cdb328c4cb3daf4997c10da01d3b3bdbb5f6153e 100644
--- a/content/common/gpu/media/v4l2_device.h
+++ b/content/common/gpu/media/v4l2_device.h
@@ -123,6 +123,13 @@ class CONTENT_EXPORT V4L2Device
   media::VideoDecodeAccelerator::SupportedProfiles GetSupportedDecodeProfiles(
       const size_t num_formats, const uint32_t pixelformats[]);
 
+  // Return true if the device supports |profile|, taking into account only
+  // fourcss from the given array of |pixelformats| of size |num_formats|.

[wuchengli, 2016/01/12 07:35:13]

s/fourcss/fourccs/

[Pawel Osciak, 2016/01/12 08:03:29]

Oh nice catch, thanks.

+  bool SupportsDecodeProfileForV4L2PixelFormats(
+      media::VideoCodecProfile profile,
+      const size_t num_formats,
+      const uint32_t pixelformats[]);
+
  protected:
   friend class base::RefCountedThreadSafe<V4L2Device>;
   explicit V4L2Device(Type type);