media: Convert I420 VideoFrame to UYVY GpuMemoryBuffer.

media/base/video_frame.cc

 // Copyright (c) 2012 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.
 
 #include "media/base/video_frame.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 205 matching lines @@
 
 // static
 scoped_refptr<VideoFrame> VideoFrame::WrapNativeTexture(
     VideoPixelFormat format,
     const gpu::MailboxHolder& mailbox_holder,
     const ReleaseMailboxCB& mailbox_holder_release_cb,
     const gfx::Size& coded_size,
     const gfx::Rect& visible_rect,
     const gfx::Size& natural_size,
     base::TimeDelta timestamp) {
-  if (format != PIXEL_FORMAT_ARGB) {
-    DLOG(ERROR) << "Only ARGB pixel format supported, got "
+  if (format != PIXEL_FORMAT_ARGB && format != PIXEL_FORMAT_UYVY) {

[reveman, 2015/08/21 21:53:03]

why does this change?

[Daniele Castagna, 2015/08/21 22:46:04]

We need to send a VideoFrame that contains one mailbox with one native texture
where the format of the VideoFrame is UYUV.

[reveman, 2015/08/22 14:04:46]

don't we sample out of this texture as if it was ARGB and the driver does the
color space conversion? just like other native textures produced by hardware
decode..

+    DLOG(ERROR) << "Unsupported pixel format supported, got "
                 << VideoPixelFormatToString(format);
     return nullptr;
   }
   const StorageType storage = STORAGE_OPAQUE;
   if (!IsValidConfig(format, storage, coded_size, visible_rect, natural_size)) {
     DLOG(ERROR) << __FUNCTION__ << " Invalid config."
                 << ConfigToString(format, storage, coded_size, visible_rect,
                                   natural_size);
     return nullptr;
   }
@@ skipping 669 matching lines @@
   uint8* data = reinterpret_cast<uint8*>(
       base::AlignedAlloc(data_size, kFrameAddressAlignment));
 
   for (size_t plane = 0; plane < NumPlanes(format_); ++plane)
     data_[plane] = data + offset[plane];
 
   AddDestructionObserver(base::Bind(&base::AlignedFree, data));
 }
 
 }  // namespace media