Switch from a DataPipe per DecoderBuffer to a single one.

media/base/decoder_buffer.cc

Index: media/base/decoder_buffer.cc
diff --git a/media/base/decoder_buffer.cc b/media/base/decoder_buffer.cc
index 0711268740ec7b12fe0cf9fe1a3d4577828f7340..2a80c623d6a964e5f3d01d735d79b029fdfb809f 100644
--- a/media/base/decoder_buffer.cc
+++ b/media/base/decoder_buffer.cc
@@ -104,4 +104,18 @@ void DecoderBuffer::set_timestamp(base::TimeDelta timestamp) {
   timestamp_ = timestamp;
 }
 
+void DecoderBuffer::CopySideDataFrom(const uint8* side_data,
+                                     int side_data_size) {
+  if (side_data_size > 0) {
+    side_data_.reset(reinterpret_cast<uint8*>(
+        base::AlignedAlloc(side_data_size_ + kPaddingSize, kAlignmentSize)));

[xhwang, 2014/12/06 00:03:44]

Can we have a centralized place to call AlignedAlloc for side data? We are doing
the same on l.46.

[DaleCurtis, 2014/12/06 00:42:59]

Done.

+    side_data_size_ = side_data_size;
+    memcpy(side_data_.get(), side_data, side_data_size_);
+    memset(side_data_.get() + side_data_size_, 0, kPaddingSize);
+  } else {
+    side_data_.reset();
+    side_data_size_ = 0;
+  }
+}
+
 }  // namespace media