Improving WebM video duration estimation.

media/base/decoder_buffer.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/decoder_buffer.h"
 
 #include "base/logging.h"
 #include "media/base/buffers.h"
 #include "media/base/decrypt_config.h"
 
 namespace media {
 
 // Allocates a block of memory which is padded for use with the SIMD
 // optimizations used by FFmpeg.
 static uint8* AllocateFFmpegSafeBlock(int size) {
   uint8* const block = reinterpret_cast<uint8*>(base::AlignedAlloc(
       size + DecoderBuffer::kPaddingSize, DecoderBuffer::kAlignmentSize));
   memset(block + size, 0, DecoderBuffer::kPaddingSize);
   return block;
 }
 
 DecoderBuffer::DecoderBuffer(int size)
-    : size_(size),
+    : is_duration_estimated_(false),
+      size_(size),
       side_data_size_(0),
       is_key_frame_(false) {
   Initialize();
 }
 
-DecoderBuffer::DecoderBuffer(const uint8* data, int size,
-                             const uint8* side_data, int side_data_size)
-    : size_(size),
+DecoderBuffer::DecoderBuffer(const uint8* data,
+                             int size,
+                             const uint8* side_data,
+                             int side_data_size)
+    : is_duration_estimated_(false),
+      size_(size),
       side_data_size_(side_data_size),
       is_key_frame_(false) {
   if (!data) {
     CHECK_EQ(size_, 0);
     CHECK(!side_data);
     return;
   }
 
   Initialize();
 
@@ skipping 72 matching lines @@
     side_data_size_ = side_data_size;
     side_data_.reset(AllocateFFmpegSafeBlock(side_data_size_));
     memcpy(side_data_.get(), side_data, side_data_size_);
   } else {
     side_data_.reset();
     side_data_size_ = 0;
   }
 }
 
 }  // namespace media