apps/codecs/libgme/blargg_source.h

   1 // Included at the beginning of library source files, after all other #include lines
   2 #ifndef BLARGG_SOURCE_H
   3 #define BLARGG_SOURCE_H
   4
   5 // If debugging is enabled and expr is false, abort program. Meant for checking
   6 // caller-supplied parameters and operations that are outside the control of the
   7 // module. A failed requirement indicates a bug outside the module.
   8 // void require( bool expr );
   9 #if defined(ROCKBOX)
  10 #undef assert
  11 #define assert( expr )
  12 #undef require
  13 #define require( expr )
  14 #else
  15 #undef require
  16 #define require( expr ) assert( expr )
  17 #endif
  18
  19 // Like printf() except output goes to debug log file. Might be defined to do
  20 // nothing (not even evaluate its arguments).
  21 // void dprintf( const char* format, ... );
  22 #if defined(ROCKBOX)
  23 #define dprintf DEBUGF
  24 #else
  25 static inline void blargg_dprintf_( const char* fmt, ... ) { }
  26 #undef dprintf
  27 #define dprintf (1) ? (void) 0 : blargg_dprintf_
  28 #endif
  29
  30 // If enabled, evaluate expr and if false, make debug log entry with source file
  31 // and line. Meant for finding situations that should be examined further, but that
  32 // don't indicate a problem. In all cases, execution continues normally.
  33 #undef check
  34 #define check( expr ) ((void) 0)
  35
  36 /* If expr yields non-NULL error string, returns it from current function,
  37 otherwise continues normally. */
  38 #undef  RETURN_ERR
  39 #define RETURN_ERR( expr ) \
  40         do {\
  41                 blargg_err_t blargg_return_err_ = (expr);\
  42                 if ( blargg_return_err_ )\
  43                         return blargg_return_err_;\
  44         } while ( 0 )
  45
  46 /* If ptr is NULL, returns out-of-memory error, otherwise continues normally. */
  47 #undef  CHECK_ALLOC
  48 #define CHECK_ALLOC( ptr ) \
  49         do {\
  50                 if ( !(ptr) )\
  51                         return "Out of memory";\
  52         } while ( 0 )
  53
  54 #ifndef max
  55         #define max(a,b) (((a) > (b)) ? (a) : (b))
  56 #endif
  57
  58 #ifndef min
  59         #define min(a,b) (((a) < (b)) ? (a) : (b))
  60 #endif
  61
  62 // typedef unsigned char byte;
  63 typedef unsigned char blargg_byte;
  64 #undef  byte
  65 #define byte blargg_byte
  66
  67 // deprecated
  68 #define BLARGG_CHECK_ALLOC CHECK_ALLOC
  69 #define BLARGG_RETURN_ERR RETURN_ERR
  70
  71 // BLARGG_SOURCE_BEGIN: If defined, #included, allowing redefition of dprintf and check
  72 #ifdef BLARGG_SOURCE_BEGIN
  73         #include BLARGG_SOURCE_BEGIN
  74 #endif
  75
  76 #endif