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/*
* Copyright 2011 Joakim Sindholt <opensource@zhasha.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE. */
#ifndef _NINE_HELPERS_H_
#define _NINE_HELPERS_H_
#include "iunknown.h"
#include "nine_lock.h"
/*
* Note: we use these function rather than the MIN2, MAX2, CLAMP macros to
* avoid evaluating arguments (which are often function calls) more than once.
*/
static inline unsigned _min(unsigned a, unsigned b)
{
return (a < b) ? a : b;
}
/* Sshhh ... */
#define nine_reference(a, b) _nine_reference((void **)(a), (b))
static inline void _nine_reference(void **ref, void *ptr)
{
if (*ref != ptr) {
if (*ref)
NineUnknown_Release(*ref);
if (ptr)
NineUnknown_AddRef(ptr);
*ref = ptr;
}
}
#define nine_reference_set(a, b) _nine_reference_set((void **)(a), (b))
static inline void _nine_reference_set(void **ref, void *ptr)
{
*ref = ptr;
if (ptr)
NineUnknown_AddRef(ptr);
}
#define nine_bind(a, b) _nine_bind((void **)(a), (b))
static inline void _nine_bind(void **dst, void *obj)
{
if (*dst != obj) {
if (*dst)
NineUnknown_Unbind(*dst);
if (obj)
NineUnknown_Bind(obj);
*dst = obj;
}
}
#define NINE_DEVICE_CHILD_NEW(nine, out, dev, ...) \
{ \
struct NineUnknownParams __params; \
struct Nine##nine *__data; \
\
__data = CALLOC_STRUCT(Nine##nine); \
if (!__data) { return E_OUTOFMEMORY; } \
\
__params.vtable = ((dev)->params.BehaviorFlags & D3DCREATE_MULTITHREADED) ? &Lock##nine##_vtable : &Nine##nine##_vtable; \
__params.guids = Nine##nine##_IIDs; \
__params.dtor = (void *)Nine##nine##_dtor; \
__params.container = NULL; \
__params.device = dev; \
{ \
HRESULT __hr = Nine##nine##_ctor(__data, &__params, ## __VA_ARGS__); \
if (FAILED(__hr)) { \
Nine##nine##_dtor(__data); \
return __hr; \
} \
} \
\
*(out) = __data; \
} \
return D3D_OK
#define NINE_NEW(nine, out, lock, ...) \
{ \
struct NineUnknownParams __params; \
struct Nine##nine *__data; \
\
__data = CALLOC_STRUCT(Nine##nine); \
if (!__data) { return E_OUTOFMEMORY; } \
\
__params.vtable = (lock) ? &Lock##nine##_vtable : &Nine##nine##_vtable; \
__params.guids = Nine##nine##_IIDs; \
__params.dtor = (void *)Nine##nine##_dtor; \
__params.container = NULL; \
__params.device = NULL; \
{ \
HRESULT __hr = Nine##nine##_ctor(__data, &__params, ## __VA_ARGS__); \
if (FAILED(__hr)) { \
Nine##nine##_dtor(__data); \
return __hr; \
} \
} \
\
*(out) = __data; \
} \
return D3D_OK
static inline float asfloat(DWORD value)
{
union {
float f;
DWORD w;
} u;
u.w = value;
return u.f;
}
struct nine_range
{
struct nine_range *next;
int16_t bgn; /* inclusive */
int16_t end; /* exclusive */
};
/* We won't ever need more than 256 ranges, so just allocate once. */
struct nine_range_pool
{
struct nine_range *free;
struct nine_range **slabs;
unsigned num_slabs;
unsigned num_slabs_max;
};
static inline void
nine_range_pool_put(struct nine_range_pool *pool, struct nine_range *r)
{
r->next = pool->free;
pool->free = r;
}
static inline void
nine_range_pool_put_chain(struct nine_range_pool *pool,
struct nine_range *head,
struct nine_range *tail)
{
tail->next = pool->free;
pool->free = head;
}
void
nine_ranges_insert(struct nine_range **head, int16_t bgn, int16_t end,
struct nine_range_pool *pool);
#endif /* _NINE_HELPERS_H_ */
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