media::VideoFrame::WrapExternalSharedMemory

content/browser/renderer_host/media/video_capture_buffer_pool.cc

 // Copyright (c) 2013 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 "content/browser/renderer_host/media/video_capture_buffer_pool.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/logging.h"
 #include "media/base/video_frame.h"
@@ skipping 126 matching lines @@
   if (buffer_id < 0)
     return NULL;
 
   base::Closure disposal_handler = base::Bind(
       &VideoCaptureBufferPool::RelinquishProducerReservation,
       this,
       buffer_id);
 
   Buffer* buffer = buffers_[buffer_id];
   // Wrap the buffer in a VideoFrame container.
-  uint8* base_ptr = static_cast<uint8*>(buffer->shared_memory.memory());
-  size_t u_offset = size.GetArea();
-  size_t v_offset = u_offset + u_offset / 4;
   scoped_refptr<media::VideoFrame> frame =
-      media::VideoFrame::WrapExternalYuvData(
-          media::VideoFrame::YV12,  // Actually it's I420, but equivalent here.
-          size, gfx::Rect(size), size,
-          size.width(),             // y stride
-          size.width() / 2,         // u stride
-          size.width() / 2,         // v stride
-          base_ptr,                 // y address
-          base_ptr + u_offset,      // u address
-          base_ptr + v_offset,      // v address
-          base::TimeDelta(),        // timestamp (unused).
+      media::VideoFrame::WrapExternalSharedMemory(
+          media::VideoFrame::I420,
+          size,
+          gfx::Rect(size),
+          size,
+          static_cast<uint8*>(buffer->shared_memory.memory()),
           buffer->shared_memory.handle(),
+          base::TimeDelta(),
           disposal_handler);
 
   if (buffer->rotation != rotation) {
     // TODO(nick): Generalize the |rotation| mechanism.
     media::FillYUV(frame.get(), 0, 128, 128);
     buffer->rotation = rotation;
   }
 
   return frame;
 }
@@ skipping 34 matching lines @@
   return buffer_id;
 }
 
 bool VideoCaptureBufferPool::IsAllocated() const {
   lock_.AssertAcquired();
   return !buffers_.empty();
 }
 
 }  // namespace content