libvpx: Add VP9 decoder.

source/libvpx/vpx_mem/memory_manager/hmm_grow.c

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 
 /* This code is in the public domain.
 ** Version: 1.1  Author: Walt Karas
 */
 
 #include "hmm_intrnl.h"
 
-void U(grow_chunk)(U(descriptor) *desc, void *end, U(size_bau) n_baus)
-{
+void U(grow_chunk)(U(descriptor) *desc, void *end, U(size_bau) n_baus) {
 #undef HEAD_PTR
 #define HEAD_PTR ((head_record *) end)
 
-    end = BAUS_BACKWARD(end, DUMMY_END_BLOCK_BAUS);
+  end = BAUS_BACKWARD(end, DUMMY_END_BLOCK_BAUS);
 
 #ifdef HMM_AUDIT_FAIL
 
-    if (HEAD_PTR->block_size != 0)
-        /* Chunk does not have valid dummy end block. */
-        HMM_AUDIT_FAIL
+  if (HEAD_PTR->block_size != 0)
+    /* Chunk does not have valid dummy end block. */
+    HMM_AUDIT_FAIL
 
 #endif
 
-        /* Create a new block that absorbs the old dummy end block. */
-        HEAD_PTR->block_size = n_baus;
+    /* Create a new block that absorbs the old dummy end block. */
+    HEAD_PTR->block_size = n_baus;
 
-    /* Set up the new dummy end block. */
-    {
-        head_record *dummy = (head_record *) BAUS_FORWARD(end, n_baus);
-        dummy->previous_block_size = n_baus;
-        dummy->block_size = 0;
-    }
+  /* Set up the new dummy end block. */
+  {
+    head_record *dummy = (head_record *) BAUS_FORWARD(end, n_baus);
+    dummy->previous_block_size = n_baus;
+    dummy->block_size = 0;
+  }
 
-    /* Simply free the new block, allowing it to coalesce with any
-    ** free block at that was the last block in the chunk prior to
-    ** growth.
-    */
-    U(free)(desc, HEAD_TO_PTR_REC(end));
+  /* Simply free the new block, allowing it to coalesce with any
+  ** free block at that was the last block in the chunk prior to
+  ** growth.
+  */
+  U(free)(desc, HEAD_TO_PTR_REC(end));
 
 #undef HEAD_PTR
 }