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a44100cafc1062a725f2bba809b56846f21c8952
android_vendor_qcom_opensou…/libgralloc/mapper.cpp
Naomi Luis a44100cafc libgralloc: Add Perform function to get the stride. 
- Introduce a new class to Get the Adreno computed stride information.
This class has been added to allow adreno library computed strides to
be propagated to the allocation function as well as those clients
requesting it.
- Add a new Perform function to get the stride. The width and the format
can be passed from the calling functions (like EGL) to get the stride of
the buffer.

Change-Id: I4c2b4a02deff327f0ea5558c478997527fe9d3cf
2013-02-14 09:19:35 -08:00

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/*
* Copyright (C) 2008 The Android Open Source Project
* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <limits.h>
#include <errno.h>
#include <pthread.h>
#include <unistd.h>
#include <string.h>
#include <stdarg.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <linux/ashmem.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <cutils/ashmem.h>
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
#include <genlock.h>
#include <linux/android_pmem.h>
#include "gralloc_priv.h"
#include "gr.h"
#include "alloc_controller.h"
#include "memalloc.h"
#include <qdMetaData.h>
using namespace gralloc;
/*****************************************************************************/
// Return the type of allocator -
// these are used for mapping/unmapping
static IMemAlloc* getAllocator(int flags)
{
IMemAlloc* memalloc;
IAllocController* alloc_ctrl = IAllocController::getInstance();
memalloc = alloc_ctrl->getAllocator(flags);
return memalloc;
}
static int gralloc_map(gralloc_module_t const* module,
buffer_handle_t handle,
void** vaddr)
{
private_handle_t* hnd = (private_handle_t*)handle;
void *mappedAddress;
if (!(hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) &&
!(hnd->flags & private_handle_t::PRIV_FLAGS_SECURE_BUFFER)) {
size_t size = hnd->size;
IMemAlloc* memalloc = getAllocator(hnd->flags) ;
int err = memalloc->map_buffer(&mappedAddress, size,
hnd->offset, hnd->fd);
if(err || mappedAddress == MAP_FAILED) {
ALOGE("Could not mmap handle %p, fd=%d (%s)",
handle, hnd->fd, strerror(errno));
hnd->base = 0;
return -errno;
}
hnd->base = intptr_t(mappedAddress) + hnd->offset;
//LOGD("gralloc_map() succeeded fd=%d, off=%d, size=%d, vaddr=%p",
// hnd->fd, hnd->offset, hnd->size, mappedAddress);
mappedAddress = MAP_FAILED;
size = ROUND_UP_PAGESIZE(sizeof(MetaData_t));
err = memalloc->map_buffer(&mappedAddress, size,
hnd->offset_metadata, hnd->fd_metadata);
if(err || mappedAddress == MAP_FAILED) {
ALOGE("Could not mmap handle %p, fd=%d (%s)",
handle, hnd->fd_metadata, strerror(errno));
hnd->base_metadata = 0;
return -errno;
}
hnd->base_metadata = intptr_t(mappedAddress) + hnd->offset_metadata;
}
*vaddr = (void*)hnd->base;
return 0;
}
static int gralloc_unmap(gralloc_module_t const* module,
buffer_handle_t handle)
{
private_handle_t* hnd = (private_handle_t*)handle;
if (!(hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER)) {
int err = -EINVAL;
void* base = (void*)hnd->base;
size_t size = hnd->size;
IMemAlloc* memalloc = getAllocator(hnd->flags) ;
if(memalloc != NULL) {
err = memalloc->unmap_buffer(base, size, hnd->offset);
if (err) {
ALOGE("Could not unmap memory at address %p", base);
}
base = (void*)hnd->base_metadata;
size = ROUND_UP_PAGESIZE(sizeof(MetaData_t));
err = memalloc->unmap_buffer(base, size, hnd->offset_metadata);
if (err) {
ALOGE("Could not unmap memory at address %p", base);
}
}
}
/* need to initialize the pointer to NULL otherwise unmapping for that
* buffer happens twice which leads to crash */
hnd->base = 0;
hnd->base_metadata = 0;
return 0;
}
/*****************************************************************************/
static pthread_mutex_t sMapLock = PTHREAD_MUTEX_INITIALIZER;
/*****************************************************************************/
int gralloc_register_buffer(gralloc_module_t const* module,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
// In this implementation, we don't need to do anything here
/* NOTE: we need to initialize the buffer as not mapped/not locked
* because it shouldn't when this function is called the first time
* in a new process. Ideally these flags shouldn't be part of the
* handle, but instead maintained in the kernel or at least
* out-of-line
*/
private_handle_t* hnd = (private_handle_t*)handle;
hnd->base = 0;
hnd->base_metadata = 0;
void *vaddr;
int err = gralloc_map(module, handle, &vaddr);
if (err) {
ALOGE("%s: gralloc_map failed", __FUNCTION__);
return err;
}
// Reset the genlock private fd flag in the handle
hnd->genlockPrivFd = -1;
// Check if there is a valid lock attached to the handle.
if (-1 == hnd->genlockHandle) {
ALOGE("%s: the lock is invalid.", __FUNCTION__);
gralloc_unmap(module, handle);
hnd->base = 0;
return -EINVAL;
}
// Attach the genlock handle
if (GENLOCK_NO_ERROR != genlock_attach_lock((native_handle_t *)handle)) {
ALOGE("%s: genlock_attach_lock failed", __FUNCTION__);
gralloc_unmap(module, handle);
hnd->base = 0;
return -EINVAL;
}
return 0;
}
int gralloc_unregister_buffer(gralloc_module_t const* module,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
/*
* If the buffer has been mapped during a lock operation, it's time
* to un-map it. It's an error to be here with a locked buffer.
* NOTE: the framebuffer is handled differently and is never unmapped.
*/
private_handle_t* hnd = (private_handle_t*)handle;
if (hnd->base != 0) {
gralloc_unmap(module, handle);
}
hnd->base = 0;
hnd->base_metadata = 0;
// Release the genlock
if (-1 != hnd->genlockHandle) {
return genlock_release_lock((native_handle_t *)handle);
} else {
ALOGE("%s: there was no genlock attached to this buffer", __FUNCTION__);
return -EINVAL;
}
return 0;
}
int terminateBuffer(gralloc_module_t const* module,
private_handle_t* hnd)
{
/*
* If the buffer has been mapped during a lock operation, it's time
* to un-map it. It's an error to be here with a locked buffer.
*/
if (hnd->base != 0) {
// this buffer was mapped, unmap it now
if (hnd->flags & (private_handle_t::PRIV_FLAGS_USES_PMEM |
private_handle_t::PRIV_FLAGS_USES_PMEM_ADSP |
private_handle_t::PRIV_FLAGS_USES_ASHMEM |
private_handle_t::PRIV_FLAGS_USES_ION)) {
gralloc_unmap(module, hnd);
} else {
ALOGE("terminateBuffer: unmapping a non pmem/ashmem buffer flags = 0x%x",
hnd->flags);
gralloc_unmap(module, hnd);
}
}
return 0;
}
int gralloc_lock(gralloc_module_t const* module,
buffer_handle_t handle, int usage,
int l, int t, int w, int h,
void** vaddr)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
int err = 0;
private_handle_t* hnd = (private_handle_t*)handle;
if (usage & (GRALLOC_USAGE_SW_READ_MASK | GRALLOC_USAGE_SW_WRITE_MASK)) {
if (hnd->base == 0) {
// we need to map for real
pthread_mutex_t* const lock = &sMapLock;
pthread_mutex_lock(lock);
err = gralloc_map(module, handle, vaddr);
pthread_mutex_unlock(lock);
}
*vaddr = (void*)hnd->base;
// Lock the buffer for read/write operation as specified. Write lock
// has a higher priority over read lock.
int lockType = 0;
if (usage & GRALLOC_USAGE_SW_WRITE_MASK) {
lockType = GENLOCK_WRITE_LOCK;
} else if (usage & GRALLOC_USAGE_SW_READ_MASK) {
lockType = GENLOCK_READ_LOCK;
}
int timeout = GENLOCK_MAX_TIMEOUT;
if (GENLOCK_NO_ERROR != genlock_lock_buffer((native_handle_t *)handle,
(genlock_lock_type)lockType,
timeout)) {
ALOGE("%s: genlock_lock_buffer (lockType=0x%x) failed", __FUNCTION__,
lockType);
return -EINVAL;
} else {
// Mark this buffer as locked for SW read/write operation.
hnd->flags |= private_handle_t::PRIV_FLAGS_SW_LOCK;
}
if ((usage & GRALLOC_USAGE_SW_WRITE_MASK) &&
!(hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER)) {
// Mark the buffer to be flushed after cpu read/write
hnd->flags |= private_handle_t::PRIV_FLAGS_NEEDS_FLUSH;
}
}
return err;
}
int gralloc_unlock(gralloc_module_t const* module,
buffer_handle_t handle)
{
if (private_handle_t::validate(handle) < 0)
return -EINVAL;
private_handle_t* hnd = (private_handle_t*)handle;
if (hnd->flags & private_handle_t::PRIV_FLAGS_NEEDS_FLUSH) {
int err;
IMemAlloc* memalloc = getAllocator(hnd->flags) ;
err = memalloc->clean_buffer((void*)hnd->base,
hnd->size, hnd->offset, hnd->fd);
ALOGE_IF(err < 0, "cannot flush handle %p (offs=%x len=%x, flags = 0x%x) err=%s\n",
hnd, hnd->offset, hnd->size, hnd->flags, strerror(errno));
unsigned long size = ROUND_UP_PAGESIZE(sizeof(MetaData_t));
err = memalloc->clean_buffer((void*)hnd->base_metadata, size,
hnd->offset_metadata, hnd->fd_metadata);
ALOGE_IF(err < 0, "cannot flush handle %p (offs=%x len=%lu, "
"flags = 0x%x) err=%s\n", hnd, hnd->offset_metadata, size,
hnd->flags, strerror(errno));
hnd->flags &= ~private_handle_t::PRIV_FLAGS_NEEDS_FLUSH;
}
if ((hnd->flags & private_handle_t::PRIV_FLAGS_SW_LOCK)) {
// Unlock the buffer.
if (GENLOCK_NO_ERROR != genlock_unlock_buffer((native_handle_t *)handle)) {
ALOGE("%s: genlock_unlock_buffer failed", __FUNCTION__);
return -EINVAL;
} else
hnd->flags &= ~private_handle_t::PRIV_FLAGS_SW_LOCK;
}
return 0;
}
/*****************************************************************************/
int gralloc_perform(struct gralloc_module_t const* module,
int operation, ... )
{
int res = -EINVAL;
va_list args;
va_start(args, operation);
switch (operation) {
case GRALLOC_MODULE_PERFORM_CREATE_HANDLE_FROM_BUFFER:
{
int fd = va_arg(args, int);
size_t size = va_arg(args, size_t);
size_t offset = va_arg(args, size_t);
void* base = va_arg(args, void*);
int width = va_arg(args, int);
int height = va_arg(args, int);
int format = va_arg(args, int);
native_handle_t** handle = va_arg(args, native_handle_t**);
int memoryFlags = va_arg(args, int);
private_handle_t* hnd = (private_handle_t*)native_handle_create(
private_handle_t::sNumFds, private_handle_t::sNumInts);
hnd->magic = private_handle_t::sMagic;
hnd->fd = fd;
hnd->flags = private_handle_t::PRIV_FLAGS_USES_ION;
hnd->size = size;
hnd->offset = offset;
hnd->base = intptr_t(base) + offset;
hnd->gpuaddr = 0;
hnd->width = width;
hnd->height = height;
hnd->format = format;
*handle = (native_handle_t *)hnd;
res = 0;
break;
}
#ifdef QCOM_BSP
case GRALLOC_MODULE_PERFORM_UPDATE_BUFFER_GEOMETRY:
{
int width = va_arg(args, int);
int height = va_arg(args, int);
int format = va_arg(args, int);
private_handle_t* hnd = va_arg(args, private_handle_t*);
if (private_handle_t::validate(hnd)) {
return res;
}
hnd->width = width;
hnd->height = height;
hnd->format = format;
res = 0;
}
break;
case GRALLOC_MODULE_PERFORM_GET_STRIDE:
{
int width = va_arg(args, int);
int format = va_arg(args, int);
int *stride = va_arg(args, int *);
*stride = AdrenoMemInfo::getInstance().getStride(width, format);
res = 0;
} break;
#endif
default:
break;
}
va_end(args);
return res;
}
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