libvpx: Add VP9 decoder.

source/libvpx/vpx_mem/memory_manager/include/hmm_intrnl.h

 /*
  *  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
 */
 
 #ifndef HMM_INTRNL_H_
 #define HMM_INTRNL_H_
 
 #ifdef __uClinux__
 # include <lddk.h>
 #endif
 
 #include "heapmm.h"
 
 #define U(BASE) HMM_UNIQUE(BASE)
 
 /* Mask of high bit of variable of size_bau type. */
 #define HIGH_BIT_BAU_SIZE \
-    ((U(size_bau)) ~ (((U(size_bau)) ~ (U(size_bau)) 0) >> 1))
+  ((U(size_bau)) ~ (((U(size_bau)) ~ (U(size_bau)) 0) >> 1))
 
 /* Add a given number of AAUs to pointer. */
 #define AAUS_FORWARD(PTR, AAU_OFFSET) \
-    (((char *) (PTR)) + ((AAU_OFFSET) * ((U(size_aau)) HMM_ADDR_ALIGN_UNIT)))
+  (((char *) (PTR)) + ((AAU_OFFSET) * ((U(size_aau)) HMM_ADDR_ALIGN_UNIT)))
 
 /* Subtract a given number of AAUs from pointer. */
 #define AAUS_BACKWARD(PTR, AAU_OFFSET) \
-    (((char *) (PTR)) - ((AAU_OFFSET) * ((U(size_aau)) HMM_ADDR_ALIGN_UNIT)))
+  (((char *) (PTR)) - ((AAU_OFFSET) * ((U(size_aau)) HMM_ADDR_ALIGN_UNIT)))
 
 /* Add a given number of BAUs to a pointer. */
 #define BAUS_FORWARD(PTR, BAU_OFFSET) \
-    AAUS_FORWARD((PTR), (BAU_OFFSET) * ((U(size_aau)) HMM_BLOCK_ALIGN_UNIT))
+  AAUS_FORWARD((PTR), (BAU_OFFSET) * ((U(size_aau)) HMM_BLOCK_ALIGN_UNIT))
 
 /* Subtract a given number of BAUs to a pointer. */
 #define BAUS_BACKWARD(PTR, BAU_OFFSET) \
-    AAUS_BACKWARD((PTR), (BAU_OFFSET) * ((U(size_aau)) HMM_BLOCK_ALIGN_UNIT))
+  AAUS_BACKWARD((PTR), (BAU_OFFSET) * ((U(size_aau)) HMM_BLOCK_ALIGN_UNIT))
 
-typedef struct head_struct
-{
-    /* Sizes in Block Alignment Units. */
-    HMM_UNIQUE(size_bau) previous_block_size, block_size;
+typedef struct head_struct {
+  /* Sizes in Block Alignment Units. */
+  HMM_UNIQUE(size_bau) previous_block_size, block_size;
 }
 head_record;
 
-typedef struct ptr_struct
-{
-    struct ptr_struct *self, *prev, *next;
+typedef struct ptr_struct {
+  struct ptr_struct *self, *prev, *next;
 }
 ptr_record;
 
 /* Divide and round up any fraction to the next whole number. */
 #define DIV_ROUND_UP(NUMER, DENOM) (((NUMER) + (DENOM) - 1) / (DENOM))
 
 /* Number of AAUs in a block head. */
 #define HEAD_AAUS DIV_ROUND_UP(sizeof(head_record), HMM_ADDR_ALIGN_UNIT)
 
 /* Number of AAUs in a block pointer record. */
 #define PTR_RECORD_AAUS DIV_ROUND_UP(sizeof(ptr_record), HMM_ADDR_ALIGN_UNIT)
 
 /* Number of BAUs in a dummy end record (at end of chunk). */
 #define DUMMY_END_BLOCK_BAUS DIV_ROUND_UP(HEAD_AAUS, HMM_BLOCK_ALIGN_UNIT)
 
 /* Minimum number of BAUs in a block (allowing room for the pointer record. */
 #define MIN_BLOCK_BAUS \
-    DIV_ROUND_UP(HEAD_AAUS + PTR_RECORD_AAUS, HMM_BLOCK_ALIGN_UNIT)
+  DIV_ROUND_UP(HEAD_AAUS + PTR_RECORD_AAUS, HMM_BLOCK_ALIGN_UNIT)
 
 /* Return number of BAUs in block (masking off high bit containing block
 ** status). */
 #define BLOCK_BAUS(HEAD_PTR) \
-    (((head_record *) (HEAD_PTR))->block_size & ~HIGH_BIT_BAU_SIZE)
+  (((head_record *) (HEAD_PTR))->block_size & ~HIGH_BIT_BAU_SIZE)
 
 /* Return number of BAUs in previous block (masking off high bit containing
 ** block status). */
 #define PREV_BLOCK_BAUS(HEAD_PTR) \
-    (((head_record *) (HEAD_PTR))->previous_block_size & ~HIGH_BIT_BAU_SIZE)
+  (((head_record *) (HEAD_PTR))->previous_block_size & ~HIGH_BIT_BAU_SIZE)
 
 /* Set number of BAUs in previous block, preserving high bit containing
 ** block status. */
 #define SET_PREV_BLOCK_BAUS(HEAD_PTR, N_BAUS) \
-    { register head_record *h_ptr = (head_record *) (HEAD_PTR); \
-        h_ptr->previous_block_size &= HIGH_BIT_BAU_SIZE; \
-        h_ptr->previous_block_size |= (N_BAUS); }
+  { register head_record *h_ptr = (head_record *) (HEAD_PTR); \
+    h_ptr->previous_block_size &= HIGH_BIT_BAU_SIZE; \
+    h_ptr->previous_block_size |= (N_BAUS); }
 
 /* Convert pointer to pointer record of block to pointer to block's head
 ** record. */
 #define PTR_REC_TO_HEAD(PTR_REC_PTR) \
-    ((head_record *) AAUS_BACKWARD(PTR_REC_PTR, HEAD_AAUS))
+  ((head_record *) AAUS_BACKWARD(PTR_REC_PTR, HEAD_AAUS))
 
 /* Convert pointer to block head to pointer to block's pointer record. */
 #define HEAD_TO_PTR_REC(HEAD_PTR) \
-    ((ptr_record *) AAUS_FORWARD(HEAD_PTR, HEAD_AAUS))
+  ((ptr_record *) AAUS_FORWARD(HEAD_PTR, HEAD_AAUS))
 
 /* Returns non-zero if block is allocated. */
 #define IS_BLOCK_ALLOCATED(HEAD_PTR) \
-    (((((head_record *) (HEAD_PTR))->block_size | \
-       ((head_record *) (HEAD_PTR))->previous_block_size) & \
-      HIGH_BIT_BAU_SIZE) == 0)
+  (((((head_record *) (HEAD_PTR))->block_size | \
+     ((head_record *) (HEAD_PTR))->previous_block_size) & \
+    HIGH_BIT_BAU_SIZE) == 0)
 
 #define MARK_BLOCK_ALLOCATED(HEAD_PTR) \
-    { register head_record *h_ptr = (head_record *) (HEAD_PTR); \
-        h_ptr->block_size &= ~HIGH_BIT_BAU_SIZE; \
-        h_ptr->previous_block_size &= ~HIGH_BIT_BAU_SIZE; }
+  { register head_record *h_ptr = (head_record *) (HEAD_PTR); \
+    h_ptr->block_size &= ~HIGH_BIT_BAU_SIZE; \
+    h_ptr->previous_block_size &= ~HIGH_BIT_BAU_SIZE; }
 
 /* Mark a block as free when it is not the first block in a bin (and
 ** therefore not a node in the AVL tree). */
 #define MARK_SUCCESSIVE_BLOCK_IN_FREE_BIN(HEAD_PTR) \
-    { register head_record *h_ptr = (head_record *) (HEAD_PTR); \
-        h_ptr->block_size |= HIGH_BIT_BAU_SIZE; }
+  { register head_record *h_ptr = (head_record *) (HEAD_PTR); \
+    h_ptr->block_size |= HIGH_BIT_BAU_SIZE; }
 
 /* Prototypes for internal functions implemented in one file and called in
 ** another.
 */
 
 void U(into_free_collection)(U(descriptor) *desc, head_record *head_ptr);
 
 void U(out_of_free_collection)(U(descriptor) *desc, head_record *head_ptr);
 
 void *U(alloc_from_bin)(
-    U(descriptor) *desc, ptr_record *bin_front_ptr, U(size_bau) n_baus);
+  U(descriptor) *desc, ptr_record *bin_front_ptr, U(size_bau) n_baus);
 
 #ifdef HMM_AUDIT_FAIL
 
 /* Simply contains a reference to the HMM_AUDIT_FAIL macro and a
 ** dummy return. */
 int U(audit_block_fail_dummy_return)(void);
 
 
 /* Auditing a block consists of checking that the size in its head
 ** matches the previous block size in the head of the next block. */
 #define AUDIT_BLOCK_AS_EXPR(HEAD_PTR) \
-    ((BLOCK_BAUS(HEAD_PTR) == \
-      PREV_BLOCK_BAUS(BAUS_FORWARD(HEAD_PTR, BLOCK_BAUS(HEAD_PTR)))) ? \
-     0 : U(audit_block_fail_dummy_return)())
+  ((BLOCK_BAUS(HEAD_PTR) == \
+    PREV_BLOCK_BAUS(BAUS_FORWARD(HEAD_PTR, BLOCK_BAUS(HEAD_PTR)))) ? \
+   0 : U(audit_block_fail_dummy_return)())
 
 #define AUDIT_BLOCK(HEAD_PTR) \
-    { void *h_ptr = (HEAD_PTR); AUDIT_BLOCK_AS_EXPR(h_ptr); }
+  { void *h_ptr = (HEAD_PTR); AUDIT_BLOCK_AS_EXPR(h_ptr); }
 
 #endif
 
 /* Interface to AVL tree generic package instantiation. */
 
 #define AVL_UNIQUE(BASE) U(avl_ ## BASE)
 
 #define AVL_HANDLE ptr_record *
 
 #define AVL_KEY U(size_bau)
 
 #define AVL_MAX_DEPTH 64
 
 #include "cavl_if.h"
 
 #endif /* Include once. */