diff options
Diffstat (limited to 'Source/DirectFB/src/core/prealloc_surface_pool.c')
| -rwxr-xr-x | Source/DirectFB/src/core/prealloc_surface_pool.c | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/Source/DirectFB/src/core/prealloc_surface_pool.c b/Source/DirectFB/src/core/prealloc_surface_pool.c new file mode 100755 index 0000000..f7d9051 --- /dev/null +++ b/Source/DirectFB/src/core/prealloc_surface_pool.c @@ -0,0 +1,192 @@ +/* + (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. +*/ + +#include <config.h> + +#include <direct/debug.h> + +#include <fusion/conf.h> +#include <fusion/shmalloc.h> +#include <fusion/shm/pool.h> + +#include <core/core.h> +#include <core/surface_pool.h> + +typedef struct { + void *addr; + int pitch; +} PreallocAllocationData; + +/**********************************************************************************************************************/ + +static int +preallocAllocationDataSize( void ) +{ + return sizeof(PreallocAllocationData); +} + +static DFBResult +preallocInitPool( CoreDFB *core, + CoreSurfacePool *pool, + void *pool_data, + void *pool_local, + void *system_data, + CoreSurfacePoolDescription *ret_desc ) +{ + D_MAGIC_ASSERT( pool, CoreSurfacePool ); + D_ASSERT( ret_desc != NULL ); + + ret_desc->caps = CSPCAPS_NONE; + ret_desc->access[CSAID_CPU] = CSAF_READ | CSAF_WRITE; + ret_desc->types = CSTF_PREALLOCATED | CSTF_INTERNAL; + ret_desc->priority = CSPP_DEFAULT; + + snprintf( ret_desc->name, DFB_SURFACE_POOL_DESC_NAME_LENGTH, "Preallocated Memory" ); + + return DFB_OK; +} + +static DFBResult +preallocTestConfig( CoreSurfacePool *pool, + void *pool_data, + void *pool_local, + CoreSurfaceBuffer *buffer, + const CoreSurfaceConfig *config ) +{ + D_MAGIC_ASSERT( pool, CoreSurfacePool ); + D_ASSERT( config != NULL ); + + return (config->flags & CSCONF_PREALLOCATED) ? DFB_OK : DFB_UNSUPPORTED; +} + +static DFBResult +preallocAllocateBuffer( CoreSurfacePool *pool, + void *pool_data, + void *pool_local, + CoreSurfaceBuffer *buffer, + CoreSurfaceAllocation *allocation, + void *alloc_data ) +{ + int index; + CoreSurface *surface; + PreallocAllocationData *alloc = alloc_data; + + D_MAGIC_ASSERT( pool, CoreSurfacePool ); + 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) + break; + } + + if (index == MAX_SURFACE_BUFFERS) + return DFB_BUG; + + if (!(surface->config.flags & CSCONF_PREALLOCATED)) + return DFB_BUG; + + if (!surface->config.preallocated[index].addr || + surface->config.preallocated[index].pitch < DFB_BYTES_PER_LINE(surface->config.format, + surface->config.size.w)) + return DFB_INVARG; + + alloc->addr = surface->config.preallocated[index].addr; + alloc->pitch = surface->config.preallocated[index].pitch; + + allocation->flags = CSALF_PREALLOCATED | CSALF_VOLATILE; + allocation->size = surface->config.preallocated[index].pitch * + DFB_PLANE_MULTIPLY( surface->config.format, surface->config.size.h ); + + return DFB_OK; +} + +static DFBResult +preallocDeallocateBuffer( CoreSurfacePool *pool, + void *pool_data, + void *pool_local, + CoreSurfaceBuffer *buffer, + CoreSurfaceAllocation *allocation, + void *alloc_data ) +{ + D_MAGIC_ASSERT( pool, CoreSurfacePool ); + D_MAGIC_ASSERT( allocation, CoreSurfaceAllocation ); + + return DFB_OK; +} + +static DFBResult +preallocLock( CoreSurfacePool *pool, + void *pool_data, + void *pool_local, + CoreSurfaceAllocation *allocation, + void *alloc_data, + CoreSurfaceBufferLock *lock ) +{ + PreallocAllocationData *alloc = alloc_data; + + D_MAGIC_ASSERT( pool, CoreSurfacePool ); + D_MAGIC_ASSERT( allocation, CoreSurfaceAllocation ); + D_MAGIC_ASSERT( lock, CoreSurfaceBufferLock ); + + lock->addr = alloc->addr; + lock->pitch = alloc->pitch; + + return DFB_OK; +} + +static DFBResult +preallocUnlock( CoreSurfacePool *pool, + void *pool_data, + void *pool_local, + CoreSurfaceAllocation *allocation, + void *alloc_data, + CoreSurfaceBufferLock *lock ) +{ + D_MAGIC_ASSERT( pool, CoreSurfacePool ); + D_MAGIC_ASSERT( allocation, CoreSurfaceAllocation ); + D_MAGIC_ASSERT( lock, CoreSurfaceBufferLock ); + + return DFB_OK; +} + +const SurfacePoolFuncs preallocSurfacePoolFuncs = { + .AllocationDataSize = preallocAllocationDataSize, + .InitPool = preallocInitPool, + + .TestConfig = preallocTestConfig, + + .AllocateBuffer = preallocAllocateBuffer, + .DeallocateBuffer = preallocDeallocateBuffer, + + .Lock = preallocLock, + .Unlock = preallocUnlock, +}; + |