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/*
* Copyright (C) 2020 ARM Limited. All rights reserved.
*
* Copyright 2016 The Android Open Source Project
*
* 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.
*/
#ifndef GRALLOC_COMMON_MAPPER_H
#define GRALLOC_COMMON_MAPPER_H
#include <inttypes.h>
#include "mali_gralloc_log.h"
#include "core/mali_gralloc_bufferdescriptor.h"
#include "MapperMetadata.h"
#include "hidl_common.h"
#include "mali_gralloc_error.h"
namespace arm
{
namespace mapper
{
namespace common
{
using aidl::android::hardware::graphics::common::Rect;
using android::hardware::Void;
class GrallocRect {
public:
int left;
int top;
int right;
int bottom;
GrallocRect(Rect rect) {
left = rect.left;
top = rect.top;
right = rect.right;
bottom = rect.bottom;
}
#ifdef GRALLOC_MAPPER_4
GrallocRect(IMapper::Rect rect) {
left = rect.left;
top = rect.top;
right = rect.left + rect.width;
bottom = rect.top + rect.height;
}
#endif
};
/**
* Imports a raw buffer handle to create an imported buffer handle for use with
* the rest of the mapper or with other in-process libraries.
*
* @param bufferHandle [in] Buffer handle to import.
* @param outBuffer [in] imported Buffer
*/
Error importBuffer(const native_handle_t *inBuffer, buffer_handle_t *outBuffer);
/**
* Frees a buffer handle and releases all the resources associated with it
*
* @param buffer [in] Imported buffer to free
*
* @return Error::BAD_BUFFER for an invalid buffer / when failed to free the buffer
* Error::NONE on successful free
*/
Error freeBuffer(buffer_handle_t buffer);
buffer_handle_t getBuffer(void *buffer);
native_handle_t* removeBuffer(void **buffer);
/**
* Locks the given buffer for the specified CPU usage.
*
* @param buffer [in] Buffer to lock
* @param cpuUsage [in] Specifies one or more CPU usage flags to request
* @param accessRegion [in] Portion of the buffer that the client intends to access
* @param acquireFence [in] Handle for aquire fence object
* @param hidl_cb [in] HIDL callback function generating -
* error: NONE upon success. Otherwise,
* BAD_BUFFER for an invalid buffer
* BAD_VALUE for an invalid input parameters
* data: CPU-accessible pointer to the buffer data
* bytesPerPixel: v3.X Only. Number of bytes per pixel in the buffer
* bytesPerStride: v3.X Only. Bytes per stride of the buffer
*/
Error lock(buffer_handle_t buffer, uint64_t cpuUsage, const GrallocRect &accessRegion, int acquireFence, void **outData);
/**
* Unlocks a buffer to indicate all CPU accesses to the buffer have completed
*
* @param buffer [in] Buffer to lock.
* @param hidl_cb [in] HIDL callback function generating -
* error: NONE upon success. Otherwise,
* BAD_BUFFER for an invalid buffer
* releaseFence: Referrs to a sync fence object
*/
Error unlock(const native_handle_t *buffer, int *releaseFence);
/**
* Validates the buffer against specified descriptor attributes
*
* @param buffer [in] Buffer which needs to be validated.
* @param descriptorInfo [in] Required attributes of the buffer
* @param in_stride [in] Buffer stride returned by IAllocator::allocate,
* or zero if unknown.
*
* @return Error::NONE upon success. Otherwise,
* Error::BAD_BUFFER upon bad buffer input
* Error::BAD_VALUE when any of the specified attributes are invalid
*/
#ifdef GRALLOC_MAPPER_4
Error validateBufferSize(void *buffer, const IMapper::BufferDescriptorInfo &descriptorInfo, uint32_t stride);
#endif
/**
* Get the transport size of a buffer
*
* @param buffer [in] Buffer for computing transport size
* @param hidl_cb [in] HIDL callback function generating -
* error: NONE upon success. Otherwise,
* BAD_BUFFER for an invalid buffer
* numFds: Number of file descriptors needed for transport
* numInts: Number of integers needed for transport
*/
Error getTransportSize(buffer_handle_t bufferHandle, uint32_t *outNumFds, uint32_t *outNumInts);
/**
* Test whether the given BufferDescriptorInfo is allocatable.
*
* @param description [in] Description for the buffer
* @param hidl_cb [in] HIDL callback function generating -
* error: NONE, for supported description
* BAD_VALUE, Otherwise,
* supported: Whether the description can be allocated
*/
#ifdef GRALLOC_MAPPER_4
bool isSupported(const IMapper::BufferDescriptorInfo &description);
#endif
/* TODO: implement this feature for exynos */
/**
* Flushes the CPU caches of a mapped buffer.
*
* @param buffer [in] Locked buffer which needs to have CPU caches flushed.
* @param hidl_cb [in] HIDL callback function generating -
* error: NONE upon success. Otherwise, BAD_BUFFER for an invalid buffer or a buffer that
* has not been locked.
* releaseFence: Empty fence signaling completion as all work is completed within the call.
*/
Error flushLockedBuffer(buffer_handle_t buffer);
/* TODO: implement this feature for exynos */
/**
* Invalidates the CPU caches of a mapped buffer.
*
* @param buffer [in] Locked buffer which needs to have CPU caches invalidated.
*
* @return Error::NONE upon success.
* Error::BAD_BUFFER for an invalid buffer or a buffer that has not been locked.
*/
Error rereadLockedBuffer(buffer_handle_t handle);
/**
* Retrieves a Buffer's metadata value.
*
* @param buffer [in] The buffer to query for metadata.
* @param metadataType [in] The type of metadata queried.
* @param hidl_cb [in] HIDL callback function generating -
* error: NONE on success.
* BAD_BUFFER on invalid buffer argument.
* UNSUPPORTED on error when reading or unsupported metadata type.
* metadata: Vector of bytes representing the metadata value.
*/
Error get(buffer_handle_t buffer, const MetadataType &metadataType, std::vector<uint8_t> &vec);
/**
* Sets a Buffer's metadata value.
*
* @param buffer [in] The buffer for which to modify metadata.
* @param metadataType [in] The type of metadata to modify.
* @param metadata [in] Vector of bytes representing the new value for the metadata associated with the buffer.
*
* @return Error::NONE on success.
* Error::BAD_BUFFER on invalid buffer argument.
* Error::UNSUPPORTED on error when writing or unsupported metadata type.
*/
Error set(buffer_handle_t buffer, const MetadataType &metadataType, const frameworks_vec<uint8_t> &metadata);
/**
* Lists all the MetadataTypes supported by IMapper as well as a description
* of each supported MetadataType. For StandardMetadataTypes, the description
* string can be left empty.
*
* @param hidl_cb [in] HIDL callback function generating -
* error: Error status of the call, which may be
* - NONE upon success.
* - NO_RESOURCES if the get cannot be fullfilled due to unavailability of
* resources.
* descriptions: vector of MetadataTypeDescriptions that represent the
* MetadataTypes supported by the device.
*/
std::vector<MetadataTypeDescription> listSupportedMetadataTypes();
/**
* Dumps a buffer's metadata.
*
* @param buffer [in] Buffer that is being dumped
* @param hidl_cb [in] HIDL callback function generating -
* error: Error status of the call, which may be
* - NONE upon success.
* - BAD_BUFFER if the raw handle is invalid.
* - NO_RESOURCES if the get cannot be fullfilled due to unavailability of
* resources.
* bufferDump: Struct representing the metadata being dumped
*/
Error dumpBuffer(buffer_handle_t buffer, BufferDump &out);
/**
* Dumps the metadata for all the buffers in the current process.
*
* @param hidl_cb [in] HIDL callback function generating -
* error: Error status of the call, which may be
* - NONE upon success.
* - NO_RESOURCES if the get cannot be fullfilled due to unavailability of
* resources.
* bufferDumps: Vector of structs representing the buffers being dumped
*/
std::vector<BufferDump> dumpBuffers();
/**
* Returns the region of shared memory associated with the buffer that is
* reserved for client use.
*
* The shared memory may be allocated from any shared memory allocator.
* The shared memory must be CPU-accessible and virtually contiguous. The
* starting address must be word-aligned.
*
* This function may only be called after importBuffer() has been called by the
* client. The reserved region must remain accessible until freeBuffer() has
* been called. After freeBuffer() has been called, the client must not access
* the reserved region.
*
* This reserved memory may be used in future versions of Android to
* help clients implement backwards compatible features without requiring
* IAllocator/IMapper updates.
*
* @param buffer Imported buffer handle.
* @param hidl_cb [in] HIDL callback function generating -
* error: Error status of the call, which may be
* - NONE upon success.
* - BAD_BUFFER if the buffer is invalid.
* reservedRegion: CPU-accessible pointer to the reserved region
* reservedSize: the size of the reservedRegion that was requested
* in the BufferDescriptorInfo.
*/
Error getReservedRegion(buffer_handle_t buffer, void **outReservedRegion, uint64_t &outReservedSize);
} // namespace common
} // namespace mapper
} // namespace arm
#endif /* GRALLOC_COMMON_MAPPER_H */
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