gpu video: optimize HW video to SW canvas and implement it for WebRTC.

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"
 #include "base/logging.h"
 #include "base/memory/aligned_memory.h"
 #include "base/strings/string_piece.h"
 #include "gpu/command_buffer/common/mailbox_holder.h"
 #include "media/base/limits.h"
 #include "media/base/video_util.h"
 #include "ui/gfx/geometry/point.h"
 
-#if !defined(MEDIA_FOR_CAST_IOS)
-#include "third_party/skia/include/core/SkBitmap.h"
-#endif
-
 namespace media {
 
 static bool IsPowerOfTwo(size_t x) {
   return x != 0 && (x & (x - 1)) == 0;
 }
 
 static inline size_t RoundUp(size_t value, size_t alignment) {
   DCHECK(IsPowerOfTwo(alignment));
   return ((value + (alignment - 1)) & ~(alignment - 1));
 }
@@ skipping 207 matching lines @@
   return false;
 }
 
 // static
 scoped_refptr<VideoFrame> VideoFrame::WrapNativeTexture(
     scoped_ptr<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,
-    const ReadPixelsCB& read_pixels_cb) {
+    base::TimeDelta timestamp) {
   scoped_refptr<VideoFrame> frame(new VideoFrame(NATIVE_TEXTURE,
                                                  coded_size,
                                                  visible_rect,
                                                  natural_size,
                                                  mailbox_holder.Pass(),
                                                  timestamp,
                                                  false));
   frame->mailbox_holder_release_cb_ = mailbox_holder_release_cb;
-  frame->read_pixels_cb_ = read_pixels_cb;
 
   return frame;
 }
 
-#if !defined(MEDIA_FOR_CAST_IOS)
-void VideoFrame::ReadPixelsFromNativeTexture(const SkBitmap& pixels) {
-  DCHECK_EQ(format_, NATIVE_TEXTURE);
-  if (!read_pixels_cb_.is_null())
-    read_pixels_cb_.Run(pixels);
-}
-#endif
-
 // static
 scoped_refptr<VideoFrame> VideoFrame::WrapExternalPackedMemory(
     Format format,
     const gfx::Size& coded_size,
     const gfx::Rect& visible_rect,
     const gfx::Size& natural_size,
     uint8* data,
     size_t data_size,
     base::SharedMemoryHandle handle,
     base::TimeDelta timestamp,
@@ skipping 525 matching lines @@
   for (size_t plane = 0; plane < NumPlanes(format_); ++plane) {
     for (int row = 0; row < rows(plane); ++row) {
       base::MD5Update(context, base::StringPiece(
           reinterpret_cast<char*>(data(plane) + stride(plane) * row),
           row_bytes(plane)));
     }
   }
 }
 
 }  // namespace media