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/*
(c) Copyright 2001-2009 The world wide DirectFB Open Source Community (directfb.org)
(c) Copyright 2000-2004 Convergence (integrated media) GmbH
All rights reserved.
Written by Denis Oliver Kropp <dok@directfb.org>,
Andreas Hundt <andi@fischlustig.de>,
Sven Neumann <neo@directfb.org>,
Ville Syrjälä <syrjala@sci.fi> and
Claudio Ciccani <klan@users.sf.net>.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#ifndef __CORE__SURFACE_BUFFER_H__
#define __CORE__SURFACE_BUFFER_H__
#include <direct/debug.h>
#include <direct/list.h>
#include <fusion/vector.h>
#include <core/surface.h>
#include <directfb.h>
/*
* Configuration and State flags of a Surface Buffer
*/
typedef enum {
CSBF_NONE = 0x00000000, /* None of these. */
CSBF_STICKED = 0x00000001, /* Sticked to one Surface Pool, e.g. system only. */
CSBF_ALL = 0x00000001 /* All of these. */
} CoreSurfaceBufferFlags;
/*
* Configuration and State flags of a Surface Buffer Allocation
*/
typedef enum {
CSALF_NONE = 0x00000000, /* None of these. */
CSALF_ONEFORALL = 0x00000001, /* Only one allocation in pool for all buffers. */
CSALF_VOLATILE = 0x00000002, /* Allocation should be freed when no longer up to date. */
CSALF_PREALLOCATED = 0x00000004, /* Preallocated memory, don't zap when "thrifty-surface-buffers" is active. */
CSALF_MUCKOUT = 0x00001000, /* Indicates surface pool being in the progress of mucking out this and possibly
other allocations to have enough space for a new allocation to be made. */
CSALF_ALL = 0x00001007 /* All of these. */
} CoreSurfaceAllocationFlags;
/*
* An Allocation of a Surface Buffer
*/
struct __DFB_CoreSurfaceAllocation {
int magic;
DirectSerial serial; /* Equals serial of buffer if content is up to date. */
CoreSurfaceBuffer *buffer; /* Surface Buffer owning this allocation. */
CoreSurface *surface; /* Surface owning the Buffer of this allocation. */
CoreSurfacePool *pool; /* Surface Pool providing the allocation. */
void *data; /* Pool's private data for this allocation. */
int size; /* Amount of data used by this allocation. */
unsigned long offset; /* Offset within address range of pool if contiguous. */
CoreSurfaceAllocationFlags flags; /* Pool can return CSALF_ONEFORALL upon allocation of first buffer. */
const CoreSurfaceAccessFlags *access; /* Possible access flags (pointer to pool description). */
CoreSurfaceAccessFlags accessed[_CSAID_NUM]; /* Access since last synchronization. */
};
#define CORE_SURFACE_ALLOCATION_ASSERT(alloc) \
do { \
D_MAGIC_ASSERT( alloc, CoreSurfaceAllocation ); \
D_ASSUME( (alloc)->size > 0 ); \
D_ASSERT( (alloc)->size >= 0 ); \
D_ASSERT( (alloc)->offset + (alloc)->size <= ((alloc)->pool->desc.size ?:~0UL) ); \
D_FLAGS_ASSERT( (alloc)->access[CSAID_CPU], CSAF_ALL ); \
D_FLAGS_ASSERT( (alloc)->access[CSAID_GPU], CSAF_ALL ); \
D_FLAGS_ASSERT( (alloc)->flags, CSALF_ALL ); \
D_FLAGS_ASSERT( (alloc)->accessed[CSAID_CPU], CSAF_ALL ); \
D_FLAGS_ASSERT( (alloc)->accessed[CSAID_GPU], CSAF_ALL ); \
} while (0)
/*
* A Lock on a Surface Buffer
*/
struct __DFB_CoreSurfaceBufferLock {
int magic; /* Must be valid before calling dfb_surface_pool_lock() */
CoreSurfaceAccessorID accessor; /* " */
CoreSurfaceAccessFlags access; /* " */
CoreSurfaceBuffer *buffer; /* Set by dfb_surface_pool_lock() */
CoreSurfaceAllocation *allocation; /* " */
void *addr; /* " */
unsigned long phys; /* " */
unsigned long offset; /* " */
unsigned int pitch; /* " */
void *handle; /* " */
};
static inline void
dfb_surface_buffer_lock_reset( CoreSurfaceBufferLock *lock )
{
D_MAGIC_ASSERT( lock, CoreSurfaceBufferLock );
lock->buffer = NULL;
lock->allocation = NULL;
lock->addr = NULL;
lock->phys = 0;
lock->offset = ~0;
lock->pitch = 0;
lock->handle = NULL;
}
static inline void
dfb_surface_buffer_lock_init( CoreSurfaceBufferLock *lock, CoreSurfaceAccessorID accessor, CoreSurfaceAccessFlags access )
{
D_MAGIC_SET( lock, CoreSurfaceBufferLock );
lock->accessor = accessor;
lock->access = access;
dfb_surface_buffer_lock_reset( lock );
}
static inline void
dfb_surface_buffer_lock_deinit( CoreSurfaceBufferLock *lock )
{
D_MAGIC_ASSERT( lock, CoreSurfaceBufferLock );
lock->accessor = CSAID_NONE;
lock->access = CSAF_NONE;
D_MAGIC_CLEAR( lock );
}
#define CORE_SURFACE_BUFFER_LOCK_ASSERT(lock) \
do { \
D_MAGIC_ASSERT( lock, CoreSurfaceBufferLock ); \
D_FLAGS_ASSERT( (lock)->access, CSAF_ALL ); \
if ((lock)->buffer) { \
D_ASSERT( (lock)->allocation != NULL ); \
D_ASSERT( (lock)->buffer == (lock)->allocation->buffer ); \
D_ASSUME( (lock)->addr != NULL || (lock)->phys != 0 || (lock)->offset != ~0 || (lock)->handle != NULL );\
D_ASSUME( (lock)->offset == (lock)->allocation->offset || (lock)->offset == ~0 ); \
D_ASSERT( (lock)->pitch > 0 || ((lock)->addr == NULL && (lock)->phys == 0) ); \
} \
else { \
D_ASSERT( (lock)->allocation == NULL ); \
D_ASSERT( (lock)->addr == NULL ); \
D_ASSERT( (lock)->phys == 0 ); \
D_ASSERT( (lock)->offset == ~0 ); \
D_ASSERT( (lock)->pitch == 0 ); \
D_ASSERT( (lock)->handle == NULL ); \
} \
} while (0)
/*
* A Surface Buffer of a Surface
*/
struct __DFB_CoreSurfaceBuffer {
int magic;
DirectSerial serial; /* Increased when content is written. */
CoreSurfaceAllocation *written; /* Allocation with the last write access. */
CoreSurfaceAllocation *read; /* Allocation with the last read access. */
CoreSurface *surface; /* Surface owning this Surface Buffer. */
CoreSurfacePolicy policy;
CoreSurfaceBufferFlags flags; /* Configuration and State flags. */
DFBSurfacePixelFormat format; /* Pixel format of buffer data. */
FusionVector allocs; /* Allocations within Surface Pools. */
#if 1
unsigned int locked; /* Lock count. FIXME: Add fail safe cleanup! */
#endif
};
DFBResult dfb_surface_buffer_new ( CoreSurface *surface,
CoreSurfaceBufferFlags flags,
CoreSurfaceBuffer **ret_buffer );
DFBResult dfb_surface_buffer_destroy( CoreSurfaceBuffer *buffer );
DFBResult dfb_surface_buffer_lock ( CoreSurfaceBuffer *buffer,
CoreSurfaceAccessorID accessor,
CoreSurfaceAccessFlags access,
CoreSurfaceBufferLock *ret_lock );
DFBResult dfb_surface_buffer_unlock ( CoreSurfaceBufferLock *lock );
DFBResult dfb_surface_buffer_read ( CoreSurfaceBuffer *buffer,
void *destination,
int pitch,
const DFBRectangle *rect );
DFBResult dfb_surface_buffer_write ( CoreSurfaceBuffer *buffer,
const void *source,
int pitch,
const DFBRectangle *rect );
DFBResult dfb_surface_buffer_dump ( CoreSurfaceBuffer *buffer,
const char *directory,
const char *prefix );
static inline int
dfb_surface_buffer_index( CoreSurfaceBuffer *buffer )
{
int index;
CoreSurface *surface;
D_MAGIC_ASSERT( buffer, CoreSurfaceBuffer );
surface = buffer->surface;
D_MAGIC_ASSERT( surface, CoreSurface );
for (index=0; index<MAX_SURFACE_BUFFERS; index++) {
if (surface->buffers[index] == buffer)
return index;
}
D_ASSERT( index<MAX_SURFACE_BUFFERS );
return 0;
}
DFBResult dfb_surface_allocation_update( CoreSurfaceAllocation *allocation,
CoreSurfaceAccessFlags access );
#endif
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