0371a6cfa9
The GRALLOC_USAGE_PROTECTED flag that was used earlier for content protection is also used for some other use cases such as disabling of screen captures. Define this new flag that is explicitly used for allocating secured buffers for DRM. Change-Id: Ia33f79fa0dea7f2f16dd320f267203e6173af48e CRs-fixed: 348454 (cherry picked from commit 440a996f13be732895524412762793f109681c11)
449 lines
14 KiB
C++
449 lines
14 KiB
C++
/*
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* Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of Code Aurora Forum, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <cutils/log.h>
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#include <utils/RefBase.h>
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#include <fcntl.h>
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#include "gralloc_priv.h"
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#include "alloc_controller.h"
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#include "memalloc.h"
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#ifdef USE_ION
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#include "ionalloc.h"
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#endif
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#include "pmemalloc.h"
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#include "ashmemalloc.h"
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#include "gr.h"
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using namespace gralloc;
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using android::sp;
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const int GRALLOC_HEAP_MASK = GRALLOC_USAGE_PRIVATE_ADSP_HEAP |
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GRALLOC_USAGE_PRIVATE_UI_CONTIG_HEAP |
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GRALLOC_USAGE_PRIVATE_SMI_HEAP |
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GRALLOC_USAGE_PRIVATE_SYSTEM_HEAP |
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GRALLOC_USAGE_PRIVATE_IOMMU_HEAP |
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GRALLOC_USAGE_PRIVATE_MM_HEAP |
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GRALLOC_USAGE_PRIVATE_WRITEBACK_HEAP |
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GRALLOC_USAGE_PRIVATE_CAMERA_HEAP;
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//Common functions
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static bool canFallback(int compositionType, int usage, bool triedSystem)
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{
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// Fallback to system heap when alloc fails unless
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// 1. Composition type is MDP
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// 2. Alloc from system heap was already tried
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// 3. The heap type is requsted explicitly
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// 4. The heap type is protected
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// 5. The buffer is meant for external display only
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if(compositionType == MDP_COMPOSITION)
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return false;
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if(triedSystem)
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return false;
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if(usage & (GRALLOC_HEAP_MASK | GRALLOC_USAGE_PROTECTED |
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GRALLOC_USAGE_PRIVATE_CP_BUFFER))
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return false;
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if(usage & (GRALLOC_HEAP_MASK | GRALLOC_USAGE_EXTERNAL_ONLY))
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return false;
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//Return true by default
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return true;
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}
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static bool useUncached(int usage)
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{
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// System heaps cannot be uncached
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if(usage & (GRALLOC_USAGE_PRIVATE_SYSTEM_HEAP |
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GRALLOC_USAGE_PRIVATE_IOMMU_HEAP))
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return false;
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if (usage & GRALLOC_USAGE_PRIVATE_UNCACHED)
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return true;
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return false;
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}
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sp<IAllocController> IAllocController::sController = NULL;
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sp<IAllocController> IAllocController::getInstance(bool useMasterHeap)
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{
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if(sController == NULL) {
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#ifdef USE_ION
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sController = new IonController();
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#else
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if(useMasterHeap)
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sController = new PmemAshmemController();
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else
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sController = new PmemKernelController();
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#endif
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}
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return sController;
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}
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#ifdef USE_ION
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//-------------- IonController-----------------------//
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IonController::IonController()
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{
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mIonAlloc = new IonAlloc();
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}
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int IonController::allocate(alloc_data& data, int usage,
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int compositionType)
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{
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int ionFlags = 0;
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int ret;
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bool noncontig = false;
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data.uncached = useUncached(usage);
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data.allocType = 0;
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if(usage & GRALLOC_USAGE_PRIVATE_UI_CONTIG_HEAP)
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ionFlags |= ION_HEAP(ION_SF_HEAP_ID);
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if(usage & GRALLOC_USAGE_PRIVATE_SYSTEM_HEAP) {
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ionFlags |= ION_HEAP(ION_SYSTEM_HEAP_ID);
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noncontig = true;
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}
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if(usage & GRALLOC_USAGE_PRIVATE_IOMMU_HEAP)
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ionFlags |= ION_HEAP(ION_IOMMU_HEAP_ID);
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if(usage & GRALLOC_USAGE_PRIVATE_MM_HEAP)
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ionFlags |= ION_HEAP(ION_CP_MM_HEAP_ID);
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if(usage & GRALLOC_USAGE_PRIVATE_WRITEBACK_HEAP)
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ionFlags |= ION_HEAP(ION_CP_WB_HEAP_ID);
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if(usage & GRALLOC_USAGE_PRIVATE_CAMERA_HEAP)
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ionFlags |= ION_HEAP(ION_CAMERA_HEAP_ID);
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if(usage & GRALLOC_USAGE_PRIVATE_CP_BUFFER)
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ionFlags |= ION_SECURE;
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if(usage & GRALLOC_USAGE_PRIVATE_DO_NOT_MAP)
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data.allocType |= private_handle_t::PRIV_FLAGS_NOT_MAPPED;
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else
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data.allocType &= ~(private_handle_t::PRIV_FLAGS_NOT_MAPPED);
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// if no flags are set, default to
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// SF + IOMMU heaps, so that bypass can work
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// we can fall back to system heap if
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// we run out.
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if(!ionFlags)
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ionFlags = ION_HEAP(ION_SF_HEAP_ID) | ION_HEAP(ION_IOMMU_HEAP_ID);
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data.flags = ionFlags;
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ret = mIonAlloc->alloc_buffer(data);
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// Fallback
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if(ret < 0 && canFallback(compositionType,
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usage,
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(ionFlags & ION_SYSTEM_HEAP_ID)))
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{
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LOGW("Falling back to system heap");
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data.flags = ION_HEAP(ION_SYSTEM_HEAP_ID);
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noncontig = true;
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ret = mIonAlloc->alloc_buffer(data);
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}
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if(ret >= 0 ) {
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data.allocType |= private_handle_t::PRIV_FLAGS_USES_ION;
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if(noncontig)
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data.allocType |= private_handle_t::PRIV_FLAGS_NONCONTIGUOUS_MEM;
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if(ionFlags & ION_SECURE)
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data.allocType |= private_handle_t::PRIV_FLAGS_SECURE_BUFFER;
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}
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return ret;
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}
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sp<IMemAlloc> IonController::getAllocator(int flags)
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{
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sp<IMemAlloc> memalloc;
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if (flags & private_handle_t::PRIV_FLAGS_USES_ION) {
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memalloc = mIonAlloc;
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} else {
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LOGE("%s: Invalid flags passed: 0x%x", __FUNCTION__, flags);
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}
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return memalloc;
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}
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#endif
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//-------------- PmemKernelController-----------------------//
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PmemKernelController::PmemKernelController()
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{
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mPmemAdspAlloc = new PmemKernelAlloc(DEVICE_PMEM_ADSP);
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// XXX: Right now, there is no need to maintain an instance
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// of the SMI allocator as we need it only in a few cases
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}
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PmemKernelController::~PmemKernelController()
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{
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}
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int PmemKernelController::allocate(alloc_data& data, int usage,
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int compositionType)
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{
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int ret = 0;
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bool adspFallback = false;
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if (!(usage & GRALLOC_USAGE_PRIVATE_SMI_HEAP))
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adspFallback = true;
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// Try SMI first
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if ((usage & GRALLOC_USAGE_PRIVATE_SMI_HEAP) ||
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(usage & GRALLOC_USAGE_EXTERNAL_DISP) ||
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(usage & GRALLOC_USAGE_PROTECTED))
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{
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int tempFd = open(DEVICE_PMEM_SMIPOOL, O_RDWR, 0);
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if(tempFd > 0) {
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close(tempFd);
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sp<IMemAlloc> memalloc;
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memalloc = new PmemKernelAlloc(DEVICE_PMEM_SMIPOOL);
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ret = memalloc->alloc_buffer(data);
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if(ret >= 0)
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return ret;
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else {
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if(adspFallback)
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LOGW("Allocation from SMI failed, trying ADSP");
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}
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}
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}
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if ((usage & GRALLOC_USAGE_PRIVATE_ADSP_HEAP) || adspFallback) {
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ret = mPmemAdspAlloc->alloc_buffer(data);
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}
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return ret;
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}
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sp<IMemAlloc> PmemKernelController::getAllocator(int flags)
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{
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sp<IMemAlloc> memalloc;
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if (flags & private_handle_t::PRIV_FLAGS_USES_PMEM_ADSP)
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memalloc = mPmemAdspAlloc;
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else {
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LOGE("%s: Invalid flags passed: 0x%x", __FUNCTION__, flags);
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memalloc = NULL;
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}
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return memalloc;
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}
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//-------------- PmemAshmmemController-----------------------//
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PmemAshmemController::PmemAshmemController()
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{
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mPmemUserspaceAlloc = new PmemUserspaceAlloc();
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mAshmemAlloc = new AshmemAlloc();
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mPmemKernelCtrl = new PmemKernelController();
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}
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PmemAshmemController::~PmemAshmemController()
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{
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}
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int PmemAshmemController::allocate(alloc_data& data, int usage,
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int compositionType)
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{
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int ret = 0;
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data.allocType = 0;
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// Make buffers cacheable by default
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data.uncached = false;
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// Override if we explicitly need uncached buffers
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if (usage & GRALLOC_USAGE_PRIVATE_UNCACHED)
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data.uncached = true;
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// If ADSP or SMI is requested use the kernel controller
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if(usage & (GRALLOC_USAGE_PRIVATE_ADSP_HEAP|
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GRALLOC_USAGE_PRIVATE_SMI_HEAP)) {
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ret = mPmemKernelCtrl->allocate(data, usage, compositionType);
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if(ret < 0)
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LOGE("%s: Failed to allocate ADSP/SMI memory", __func__);
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else
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data.allocType = private_handle_t::PRIV_FLAGS_USES_PMEM_ADSP;
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return ret;
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}
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if(usage & GRALLOC_USAGE_PRIVATE_SYSTEM_HEAP) {
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ret = mAshmemAlloc->alloc_buffer(data);
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if(ret >= 0) {
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data.allocType = private_handle_t::PRIV_FLAGS_USES_ASHMEM;
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data.allocType |= private_handle_t::PRIV_FLAGS_NONCONTIGUOUS_MEM;
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}
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return ret;
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}
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// if no memory specific flags are set,
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// default to EBI heap, so that bypass
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// can work. We can fall back to system
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// heap if we run out.
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ret = mPmemUserspaceAlloc->alloc_buffer(data);
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// Fallback
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if(ret >= 0 ) {
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data.allocType = private_handle_t::PRIV_FLAGS_USES_PMEM;
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} else if(ret < 0 && canFallback(compositionType, usage, false)) {
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LOGW("Falling back to ashmem");
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ret = mAshmemAlloc->alloc_buffer(data);
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if(ret >= 0) {
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data.allocType = private_handle_t::PRIV_FLAGS_USES_ASHMEM;
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data.allocType |= private_handle_t::PRIV_FLAGS_NONCONTIGUOUS_MEM;
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}
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}
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return ret;
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}
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sp<IMemAlloc> PmemAshmemController::getAllocator(int flags)
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{
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sp<IMemAlloc> memalloc;
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if (flags & private_handle_t::PRIV_FLAGS_USES_PMEM)
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memalloc = mPmemUserspaceAlloc;
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else if (flags & private_handle_t::PRIV_FLAGS_USES_PMEM_ADSP)
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memalloc = mPmemKernelCtrl->getAllocator(flags);
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else if (flags & private_handle_t::PRIV_FLAGS_USES_ASHMEM)
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memalloc = mAshmemAlloc;
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else {
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LOGE("%s: Invalid flags passed: 0x%x", __FUNCTION__, flags);
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memalloc = NULL;
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}
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return memalloc;
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}
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size_t getBufferSizeAndDimensions(int width, int height, int format,
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int& alignedw, int &alignedh)
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{
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size_t size;
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alignedw = ALIGN(width, 32);
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alignedh = ALIGN(height, 32);
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switch (format) {
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case HAL_PIXEL_FORMAT_RGBA_8888:
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case HAL_PIXEL_FORMAT_RGBX_8888:
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case HAL_PIXEL_FORMAT_BGRA_8888:
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size = alignedw * alignedh * 4;
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break;
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case HAL_PIXEL_FORMAT_RGB_888:
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size = alignedw * alignedh * 3;
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break;
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case HAL_PIXEL_FORMAT_RGB_565:
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case HAL_PIXEL_FORMAT_RGBA_5551:
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case HAL_PIXEL_FORMAT_RGBA_4444:
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size = alignedw * alignedh * 2;
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break;
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// adreno formats
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case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO: // NV21
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size = ALIGN(alignedw*alignedh, 4096);
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size += ALIGN(2 * ALIGN(width/2, 32) * ALIGN(height/2, 32), 4096);
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break;
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case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED: // NV12
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// The chroma plane is subsampled,
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// but the pitch in bytes is unchanged
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// The GPU needs 4K alignment, but the video decoder needs 8K
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alignedw = ALIGN(width, 128);
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size = ALIGN( alignedw * alignedh, 8192);
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size += ALIGN( alignedw * ALIGN(height/2, 32), 8192);
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break;
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case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
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case HAL_PIXEL_FORMAT_YCbCr_420_SP:
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case HAL_PIXEL_FORMAT_YCrCb_420_SP:
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case HAL_PIXEL_FORMAT_YV12:
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if ((format == HAL_PIXEL_FORMAT_YV12) && ((width&1) || (height&1))) {
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LOGE("w or h is odd for the YV12 format");
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return -EINVAL;
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}
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alignedw = ALIGN(width, 16);
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alignedh = height;
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if (HAL_PIXEL_FORMAT_NV12_ENCODEABLE == format) {
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// The encoder requires a 2K aligned chroma offset.
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size = ALIGN(alignedw*alignedh, 2048) +
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(ALIGN(alignedw/2, 16) * (alignedh/2))*2;
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} else {
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size = alignedw*alignedh +
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(ALIGN(alignedw/2, 16) * (alignedh/2))*2;
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}
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size = ALIGN(size, 4096);
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break;
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default:
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LOGE("unrecognized pixel format: %d", format);
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return -EINVAL;
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}
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return size;
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}
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// Allocate buffer from width, height and format into a
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// private_handle_t. It is the responsibility of the caller
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// to free the buffer using the free_buffer function
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int alloc_buffer(private_handle_t **pHnd, int w, int h, int format, int usage)
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{
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alloc_data data;
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int alignedw, alignedh;
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android::sp<gralloc::IAllocController> sAlloc =
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gralloc::IAllocController::getInstance(false);
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data.base = 0;
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data.fd = -1;
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data.offset = 0;
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data.size = getBufferSizeAndDimensions(w, h, format, alignedw, alignedh);
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data.align = getpagesize();
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data.uncached = useUncached(usage);
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int allocFlags = usage;
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int err = sAlloc->allocate(data, allocFlags, 0);
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if (0 != err) {
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LOGE("%s: allocate failed", __FUNCTION__);
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return -ENOMEM;
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}
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private_handle_t* hnd = new private_handle_t(data.fd, data.size,
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data.allocType, 0, format, alignedw, alignedh);
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hnd->base = (int) data.base;
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hnd->offset = data.offset;
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hnd->gpuaddr = 0;
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*pHnd = hnd;
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return 0;
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}
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void free_buffer(private_handle_t *hnd)
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{
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android::sp<gralloc::IAllocController> sAlloc =
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gralloc::IAllocController::getInstance(false);
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if (hnd && hnd->fd > 0) {
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sp<IMemAlloc> memalloc = sAlloc->getAllocator(hnd->flags);
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memalloc->free_buffer((void*)hnd->base, hnd->size, hnd->offset, hnd->fd);
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}
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if(hnd)
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delete hnd;
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}
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