Line data    Source code

       1             : /*
       2             :  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
       3             :  *
       4             :  *  Use of this source code is governed by a BSD-style license
       5             :  *  that can be found in the LICENSE file in the root of the source
       6             :  *  tree. An additional intellectual property rights grant can be found
       7             :  *  in the file PATENTS.  All contributing project authors may
       8             :  *  be found in the AUTHORS file in the root of the source tree.
       9             :  */
      10             : 
      11             : #ifndef VP9_COMMON_VP9_COMMON_H_
      12             : #define VP9_COMMON_VP9_COMMON_H_
      13             : 
      14             : /* Interface header for common constant data structures and lookup tables */
      15             : 
      16             : #include <assert.h>
      17             : 
      18             : #include "./vpx_config.h"
      19             : #include "vpx_dsp/vpx_dsp_common.h"
      20             : #include "vpx_mem/vpx_mem.h"
      21             : #include "vpx/vpx_integer.h"
      22             : #include "vpx_ports/bitops.h"
      23             : 
      24             : #ifdef __cplusplus
      25             : extern "C" {
      26             : #endif
      27             : 
      28             : // Only need this for fixed-size arrays, for structs just assign.
      29             : #define vp9_copy(dest, src)              \
      30             :   {                                      \
      31             :     assert(sizeof(dest) == sizeof(src)); \
      32             :     memcpy(dest, src, sizeof(src));      \
      33             :   }
      34             : 
      35             : // Use this for variably-sized arrays.
      36             : #define vp9_copy_array(dest, src, n)       \
      37             :   {                                        \
      38             :     assert(sizeof(*dest) == sizeof(*src)); \
      39             :     memcpy(dest, src, n * sizeof(*src));   \
      40             :   }
      41             : 
      42             : #define vp9_zero(dest) memset(&(dest), 0, sizeof(dest))
      43             : #define vp9_zero_array(dest, n) memset(dest, 0, n * sizeof(*dest))
      44             : 
      45           0 : static INLINE int get_unsigned_bits(unsigned int num_values) {
      46           0 :   return num_values > 0 ? get_msb(num_values) + 1 : 0;
      47             : }
      48             : 
      49             : #if CONFIG_DEBUG
      50             : #define CHECK_MEM_ERROR(cm, lval, expr)                                     \
      51             :   do {                                                                      \
      52             :     lval = (expr);                                                          \
      53             :     if (!lval)                                                              \
      54             :       vpx_internal_error(&(cm)->error, VPX_CODEC_MEM_ERROR,                 \
      55             :                          "Failed to allocate " #lval " at %s:%d", __FILE__, \
      56             :                          __LINE__);                                         \
      57             :   } while (0)
      58             : #else
      59             : #define CHECK_MEM_ERROR(cm, lval, expr)                     \
      60             :   do {                                                      \
      61             :     lval = (expr);                                          \
      62             :     if (!lval)                                              \
      63             :       vpx_internal_error(&(cm)->error, VPX_CODEC_MEM_ERROR, \
      64             :                          "Failed to allocate " #lval);      \
      65             :   } while (0)
      66             : #endif
      67             : 
      68             : #define VP9_SYNC_CODE_0 0x49
      69             : #define VP9_SYNC_CODE_1 0x83
      70             : #define VP9_SYNC_CODE_2 0x42
      71             : 
      72             : #define VP9_FRAME_MARKER 0x2
      73             : 
      74             : #ifdef __cplusplus
      75             : }  // extern "C"
      76             : #endif
      77             : 
      78             : #endif  // VP9_COMMON_VP9_COMMON_H_