media: Implement zero-copy video playback for VP8.

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 <climits>
 
 #include "base/bind.h"
@@ skipping 194 matching lines @@
 
   gpu::MailboxHolder mailbox_holders[kMaxPlanes];
   mailbox_holders[kYPlane] = y_mailbox_holder;
   mailbox_holders[kUPlane] = u_mailbox_holder;
   mailbox_holders[kVPlane] = v_mailbox_holder;
   return new VideoFrame(format, storage, coded_size, visible_rect, natural_size,
                         mailbox_holders, mailbox_holder_release_cb, timestamp);
 }
 
 // static
+scoped_refptr<VideoFrame> VideoFrame::WrapYV12ANativeTextures(
+    const gpu::MailboxHolder& y_mailbox_holder,
+    const gpu::MailboxHolder& u_mailbox_holder,
+    const gpu::MailboxHolder& v_mailbox_holder,
+    const gpu::MailboxHolder& a_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) {
+  const StorageType storage = STORAGE_OPAQUE;
+  VideoPixelFormat format = PIXEL_FORMAT_YV12A;
+  if (!IsValidConfig(format, storage, coded_size, visible_rect, natural_size)) {
+    LOG(DFATAL) << __FUNCTION__ << " Invalid config."
+                << ConfigToString(format, storage, coded_size, visible_rect,
+                                  natural_size);
+    return nullptr;
+  }
+
+  gpu::MailboxHolder mailbox_holders[kMaxPlanes];
+  mailbox_holders[kYPlane] = y_mailbox_holder;
+  mailbox_holders[kUPlane] = u_mailbox_holder;
+  mailbox_holders[kVPlane] = v_mailbox_holder;
+  mailbox_holders[kAPlane] = a_mailbox_holder;
+  return new VideoFrame(format, storage, coded_size, visible_rect, natural_size,
+                        mailbox_holders, mailbox_holder_release_cb, timestamp);
+}
+
+// static
 scoped_refptr<VideoFrame> VideoFrame::WrapExternalData(
     VideoPixelFormat format,
     const gfx::Size& coded_size,
     const gfx::Rect& visible_rect,
     const gfx::Size& natural_size,
     uint8_t* data,
     size_t data_size,
     base::TimeDelta timestamp) {
   return WrapExternalStorage(format, STORAGE_UNOWNED_MEMORY, coded_size,
                              visible_rect, natural_size, data, data_size,
@@ skipping 890 matching lines @@
   if (zero_initialize_memory)
     memset(data, 0, data_size);
 
   for (size_t plane = 0; plane < NumPlanes(format_); ++plane)
     data_[plane] = data + offset[plane];
 
   AddDestructionObserver(base::Bind(&base::AlignedFree, data));
 }
 
 }  // namespace media