Code reorganization: move files into their places.
This is in a separate commit to ensure renames are properly preserved.
This commit is contained in:
José Fonseca
408
src/gallium/include/pipe/p_util.h
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408
src/gallium/include/pipe/p_util.h
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/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifndef P_UTIL_H
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#define P_UTIL_H
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#include "p_compiler.h"
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#include "p_debug.h"
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#include <math.h>
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#ifdef WIN32
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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void * __stdcall
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EngAllocMem(
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unsigned long Flags,
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unsigned long MemSize,
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unsigned long Tag );
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void __stdcall
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EngFreeMem(
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void *Mem );
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#ifdef __cplusplus
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}
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#endif
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static INLINE void *
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MALLOC( unsigned size )
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{
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return EngAllocMem( 0, size, 'D3AG' );
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}
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static INLINE void *
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CALLOC( unsigned count, unsigned size )
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{
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void *ptr = MALLOC( count * size );
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if( ptr ) {
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memset( ptr, 0, count * size );
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}
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return ptr;
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}
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static INLINE void
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FREE( void *ptr )
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{
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if( ptr ) {
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EngFreeMem( ptr );
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}
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}
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static INLINE void *
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REALLOC( void *old_ptr, unsigned old_size, unsigned new_size )
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{
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void *new_ptr;
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if( new_size <= old_size ) {
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return old_ptr;
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}
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new_ptr = MALLOC( new_size );
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if( new_ptr ) {
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memcpy( new_ptr, old_ptr, old_size );
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}
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FREE( old_ptr );
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return new_ptr;
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}
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#define GETENV( X ) NULL
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#else /* WIN32 */
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#define MALLOC( SIZE ) malloc( SIZE )
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#define CALLOC( COUNT, SIZE ) calloc( COUNT, SIZE )
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#define FREE( PTR ) free( PTR )
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#define REALLOC( OLDPTR, OLDSIZE, NEWSIZE ) realloc( OLDPTR, NEWSIZE )
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#define GETENV( X ) getenv( X )
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#endif /* WIN32 */
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#define MALLOC_STRUCT(T) (struct T *) MALLOC(sizeof(struct T))
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#define CALLOC_STRUCT(T) (struct T *) CALLOC(1, sizeof(struct T))
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/**
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* Return a pointer aligned to next multiple of N bytes.
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*/
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static INLINE void *
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align_pointer( void *unaligned, uint alignment )
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{
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if (sizeof(void *) == 64) {
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union {
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void *p;
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uint64 u;
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} pu;
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pu.p = unaligned;
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pu.u = (pu.u + alignment - 1) & ~(uint64) (alignment - 1);
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return pu.p;
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}
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else {
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/* 32-bit pointers */
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union {
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void *p;
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uint u;
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} pu;
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pu.p = unaligned;
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pu.u = (pu.u + alignment - 1) & ~(alignment - 1);
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return pu.p;
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}
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}
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/**
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* Return memory on given byte alignment
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*/
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static INLINE void *
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align_malloc(size_t bytes, uint alignment)
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{
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#if defined(HAVE_POSIX_MEMALIGN)
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void *mem;
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(void) posix_memalign(& mem, alignment, bytes);
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return mem;
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#else
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char *ptr, *buf;
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assert( alignment > 0 );
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ptr = (char *) MALLOC(bytes + alignment + sizeof(void *));
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if (!ptr)
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return NULL;
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buf = (char *) align_pointer( ptr + sizeof(void *), alignment );
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*(char **)(buf - sizeof(void *)) = ptr;
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return buf;
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#endif /* defined(HAVE_POSIX_MEMALIGN) */
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}
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/**
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* Free memory returned by align_malloc().
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*/
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static INLINE void
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align_free(void *ptr)
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{
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#if defined(HAVE_POSIX_MEMALIGN)
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FREE(ptr);
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#else
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void **cubbyHole = (void **) ((char *) ptr - sizeof(void *));
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void *realAddr = *cubbyHole;
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FREE(realAddr);
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#endif /* defined(HAVE_POSIX_MEMALIGN) */
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}
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/**
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* Duplicate a block of memory.
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*/
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static INLINE void *
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mem_dup(const void *src, uint size)
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{
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void *dup = MALLOC(size);
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if (dup)
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memcpy(dup, src, size);
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return dup;
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}
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#define CLAMP( X, MIN, MAX ) ( (X)<(MIN) ? (MIN) : ((X)>(MAX) ? (MAX) : (X)) )
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#define MIN2( A, B ) ( (A)<(B) ? (A) : (B) )
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#define MAX2( A, B ) ( (A)>(B) ? (A) : (B) )
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#define Elements(x) sizeof(x)/sizeof(*(x))
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#define Offset(TYPE, MEMBER) ((unsigned)&(((TYPE *)NULL)->MEMBER))
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/**
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* Return a pointer aligned to next multiple of 16 bytes.
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*/
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static INLINE void *
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align16( void *unaligned )
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{
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return align_pointer( unaligned, 16 );
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}
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static INLINE int align_int(int x, int align)
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{
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return (x + align - 1) & ~(align - 1);
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}
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#if defined(__MSC__) && defined(__WIN32__)
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static INLINE unsigned ffs( unsigned u )
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{
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unsigned i;
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if( u == 0 ) {
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return 0;
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}
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__asm bsf eax, [u]
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__asm inc eax
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__asm mov [i], eax
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return i;
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}
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#endif
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union fi {
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float f;
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int i;
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unsigned ui;
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};
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#define UBYTE_TO_FLOAT( ub ) ((float)(ub) / 255.0F)
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#define IEEE_0996 0x3f7f0000 /* 0.996 or so */
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/* This function/macro is sensitive to precision. Test very carefully
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* if you change it!
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*/
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#define UNCLAMPED_FLOAT_TO_UBYTE(UB, F) \
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do { \
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union fi __tmp; \
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__tmp.f = (F); \
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if (__tmp.i < 0) \
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UB = (ubyte) 0; \
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else if (__tmp.i >= IEEE_0996) \
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UB = (ubyte) 255; \
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else { \
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__tmp.f = __tmp.f * (255.0f/256.0f) + 32768.0f; \
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UB = (ubyte) __tmp.i; \
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} \
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} while (0)
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static INLINE unsigned pack_ub4( unsigned char b0,
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unsigned char b1,
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unsigned char b2,
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unsigned char b3 )
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{
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return ((((unsigned int)b0) << 0) |
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(((unsigned int)b1) << 8) |
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(((unsigned int)b2) << 16) |
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(((unsigned int)b3) << 24));
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}
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static INLINE unsigned fui( float f )
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{
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union fi fi;
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fi.f = f;
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return fi.ui;
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}
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static INLINE unsigned char float_to_ubyte( float f )
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{
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unsigned char ub;
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UNCLAMPED_FLOAT_TO_UBYTE(ub, f);
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return ub;
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}
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static INLINE unsigned pack_ui32_float4( float a,
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float b,
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float c,
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float d )
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{
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return pack_ub4( float_to_ubyte(a),
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float_to_ubyte(b),
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float_to_ubyte(c),
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float_to_ubyte(d) );
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}
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#define COPY_4V( DST, SRC ) \
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do { \
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(DST)[0] = (SRC)[0]; \
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(DST)[1] = (SRC)[1]; \
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(DST)[2] = (SRC)[2]; \
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(DST)[3] = (SRC)[3]; \
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} while (0)
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#define COPY_4FV( DST, SRC ) COPY_4V(DST, SRC)
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#define ASSIGN_4V( DST, V0, V1, V2, V3 ) \
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do { \
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(DST)[0] = (V0); \
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(DST)[1] = (V1); \
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(DST)[2] = (V2); \
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(DST)[3] = (V3); \
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} while (0)
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static INLINE int ifloor(float f)
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{
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int ai, bi;
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double af, bf;
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union fi u;
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af = (3 << 22) + 0.5 + (double)f;
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bf = (3 << 22) + 0.5 - (double)f;
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u.f = (float) af; ai = u.i;
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u.f = (float) bf; bi = u.i;
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return (ai - bi) >> 1;
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}
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#if defined(__GNUC__) && defined(__i386__)
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static INLINE int iround(float f)
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{
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int r;
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__asm__ ("fistpl %0" : "=m" (r) : "t" (f) : "st");
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return r;
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}
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#elif defined(__MSC__) && defined(__WIN32__)
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static INLINE int iround(float f)
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{
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int r;
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_asm {
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fld f
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fistp r
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}
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return r;
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}
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#else
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#define IROUND(f) ((int) (((f) >= 0.0F) ? ((f) + 0.5F) : ((f) - 0.5F)))
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#endif
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/* Could maybe have an inline version of this?
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*/
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#if defined(__GNUC__)
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#define FABSF(x) fabsf(x)
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#else
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#define FABSF(x) ((float) fabs(x))
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#endif
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/* Pretty fast, and accurate.
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* Based on code from http://www.flipcode.com/totd/
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*/
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static INLINE float LOG2(float val)
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{
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union fi num;
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int log_2;
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num.f = val;
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log_2 = ((num.i >> 23) & 255) - 128;
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num.i &= ~(255 << 23);
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num.i += 127 << 23;
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num.f = ((-1.0f/3) * num.f + 2) * num.f - 2.0f/3;
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return num.f + log_2;
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}
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#if defined(__GNUC__)
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#define CEILF(x) ceilf(x)
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#else
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#define CEILF(x) ((float) ceil(x))
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#endif
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static INLINE int align(int value, int alignment)
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{
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return (value + alignment - 1) & ~(alignment - 1);
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}
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/* util/p_util.c
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*/
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extern void pipe_copy_rect(ubyte * dst, unsigned cpp, unsigned dst_pitch,
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unsigned dst_x, unsigned dst_y, unsigned width,
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unsigned height, const ubyte * src,
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int src_pitch, unsigned src_x, int src_y);
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#endif
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