gralloc/QtiMapper4.cpp - LeafOS-Project/android_hardware_qcom_display - Gitiles

 /*
  * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *     * Redistributions of source code must retain the above copyright
  *       notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  *       copyright notice, this list of conditions and the following
  *       disclaimer in the documentation and/or other materials provided
  *       with the distribution.
  *     * Neither the name of The Linux Foundation nor the names of its
  *       contributors may be used to endorse or promote products derived
  *       from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #define ATRACE_TAG (ATRACE_TAG_GRAPHICS | ATRACE_TAG_HAL)
 #define DEBUG 0
 #include "QtiMapper4.h"

 #include <cutils/trace.h>
 #include <qdMetaData.h>
 #include <sync/sync.h>

 #include <vector>

 #include "gr_utils.h"

 namespace vendor {
 namespace qti {
 namespace hardware {
 namespace display {
 namespace mapper {
 namespace V4_0 {
 namespace implementation {

 using gralloc::BufferInfo;

 using aidl::android::hardware::graphics::common::StandardMetadataType;
 QtiMapper::QtiMapper() {
   extensions_ = new QtiMapperExtensions();
   buf_mgr_ = BufferManager::GetInstance();
   ALOGD_IF(DEBUG, "Created QtiMapper instance");
 }

 bool QtiMapper::ValidDescriptor(const BufferDescriptorInfo_4_0 &bd) {
   unsigned int max_bpp = gralloc::GetBppForUncompressedRGB(HAL_PIXEL_FORMAT_RGBA_FP16);
   if (bd.width == 0 || bd.height == 0 || (OVERFLOW((bd.width * max_bpp), bd.height)) ||
       (static_cast<int32_t>(bd.format) <= 0) || bd.layerCount <= 0) {
     return false;
   }

   return true;
 }

 Error QtiMapper::CreateDescriptor(const BufferDescriptorInfo_4_0 &descriptor_info,
                                   IMapperBufferDescriptor *descriptor) {
   ALOGD_IF(DEBUG,
            "BufferDescriptorInfo: name %s wxh: %dx%d usage: 0x%" PRIu64
            " format: %d layer_count: %d",
            descriptor_info.name.c_str(), descriptor_info.width, descriptor_info.height,
            descriptor_info.usage, static_cast<uint32_t>(descriptor_info.format),
            descriptor_info.layerCount);

   if (ValidDescriptor(descriptor_info)) {
     auto vec = Encode(descriptor_info);
     *descriptor = vec;
     return Error::NONE;
   } else {
     return Error::BAD_VALUE;
   }
 }

 // Methods from ::android::hardware::graphics::mapper::V2_0::IMapper follow.
 Return<void> QtiMapper::createDescriptor(const BufferDescriptorInfo_4_0 &descriptor_info,
                                          createDescriptor_cb hidl_cb) {
   IMapperBufferDescriptor descriptor;
   auto info_4_0 = BufferDescriptorInfo_4_0{descriptor_info.name,
                                            descriptor_info.width,
                                            descriptor_info.height,
                                            descriptor_info.layerCount,
                                            static_cast<PixelFormat>(descriptor_info.format),
                                            descriptor_info.usage,
                                            descriptor_info.reservedSize};
   auto err = CreateDescriptor(info_4_0, &descriptor);
   hidl_cb(err, descriptor);
   return Void();
 }

 Return<void> QtiMapper::importBuffer(const hidl_handle &raw_handle, importBuffer_cb hidl_cb) {
   if (!raw_handle.getNativeHandle()) {
     ALOGE("%s: Unable to import handle", __FUNCTION__);
     hidl_cb(Error::BAD_BUFFER, nullptr);
     return Void();
   }

   native_handle_t *buffer_handle = native_handle_clone(raw_handle.getNativeHandle());
   if (!buffer_handle) {
     ALOGE("%s: Unable to clone handle", __FUNCTION__);
     hidl_cb(Error::NO_RESOURCES, nullptr);
     return Void();
   }

   auto error =
       static_cast<IMapper_4_0_Error>(buf_mgr_->RetainBuffer(PRIV_HANDLE_CONST(buffer_handle)));
   if (error != Error::NONE) {
     ALOGE("%s: Unable to retain handle: %p", __FUNCTION__, buffer_handle);
     native_handle_close(buffer_handle);
     native_handle_delete(buffer_handle);

     hidl_cb(error, nullptr);
     return Void();
   }
   ALOGD_IF(DEBUG, "Imported handle: %p id: %" PRIu64, buffer_handle,
            PRIV_HANDLE_CONST(buffer_handle)->id);
   hidl_cb(Error::NONE, buffer_handle);
   return Void();
 }

 Return<Error> QtiMapper::freeBuffer(void *buffer) {
   if (!buffer) {
     return Error::BAD_BUFFER;
   }
   return static_cast<IMapper_4_0_Error>(buf_mgr_->ReleaseBuffer(PRIV_HANDLE_CONST(buffer)));
 }

 bool QtiMapper::GetFenceFd(const hidl_handle &fence_handle, int *outFenceFd) {
   auto handle = fence_handle.getNativeHandle();
   if (handle && handle->numFds > 1) {
     ALOGE("invalid fence handle with %d fds", handle->numFds);
     return false;
   }

   *outFenceFd = (handle && handle->numFds == 1) ? handle->data[0] : -1;
   return true;
 }

 void QtiMapper::WaitFenceFd(int fence_fd) {
   if (fence_fd < 0) {
     return;
   }

   const int timeout = 3000;
   ATRACE_BEGIN("fence wait");
   const int error = sync_wait(fence_fd, timeout);
   ATRACE_END();
   if (error < 0) {
     ALOGE("QtiMapper: lock fence %d didn't signal in %u ms -  error: %s", fence_fd, timeout,
           strerror(errno));
   }
 }

 Error QtiMapper::LockBuffer(void *buffer, uint64_t usage, const hidl_handle &acquire_fence,
                             const IMapper::Rect &access_region) {
   if (!buffer) {
     return Error::BAD_BUFFER;
   }

   int fence_fd;
   if (!GetFenceFd(acquire_fence, &fence_fd)) {
     return Error::BAD_VALUE;
   }

   if (fence_fd > 0) {
     WaitFenceFd(fence_fd);
   }

   auto hnd = PRIV_HANDLE_CONST(buffer);

   if (access_region.top < 0 || access_region.left < 0 || access_region.width < 0 ||
       access_region.height < 0 || access_region.width > hnd->width ||
       access_region.height > hnd->height) {
     return Error::BAD_VALUE;
   }
   return static_cast<IMapper_4_0_Error>(buf_mgr_->LockBuffer(hnd, usage));
 }

 Return<void> QtiMapper::lock(void *buffer, uint64_t cpu_usage, const IMapper::Rect &access_region,
                              const hidl_handle &acquire_fence, lock_cb hidl_cb) {
   auto err = LockBuffer(buffer, cpu_usage, acquire_fence, access_region);
   if (err != Error::NONE) {
     hidl_cb(err, nullptr);
     return Void();
   }

   auto hnd = PRIV_HANDLE_CONST(buffer);
   auto *out_data = reinterpret_cast<void *>(hnd->base);

   hidl_cb(err, out_data);
   return Void();
 }

 Return<void> QtiMapper::unlock(void *buffer, unlock_cb hidl_cb) {
   auto err = Error::BAD_BUFFER;
   if (buffer != nullptr) {
     err = static_cast<IMapper_4_0_Error>(buf_mgr_->UnlockBuffer(PRIV_HANDLE_CONST(buffer)));
   }
   // We don't have a release fence
   hidl_cb(err, hidl_handle(nullptr));
   return Void();
 }

 Return<Error> QtiMapper::validateBufferSize(void *buffer,
                                             const BufferDescriptorInfo_4_0 &descriptor_info,
                                             uint32_t /*stride*/) {
   auto err = Error::BAD_BUFFER;
   auto hnd = static_cast<private_handle_t *>(buffer);
   if (buffer != nullptr && private_handle_t::validate(hnd) == 0) {
     if (static_cast<IMapper_4_0_Error>(buf_mgr_->IsBufferImported(hnd)) != Error::NONE) {
       return Error::BAD_BUFFER;
     }
     auto info = gralloc::BufferInfo(descriptor_info.width, descriptor_info.height,
                                     static_cast<uint32_t>(descriptor_info.format),
                                     static_cast<uint64_t>(descriptor_info.usage));
     info.layer_count = descriptor_info.layerCount;
     err = static_cast<IMapper_4_0_Error>(buf_mgr_->ValidateBufferSize(hnd, info));
   }
   return err;
 }

 Return<void> QtiMapper::getTransportSize(void *buffer, getTransportSize_cb hidl_cb) {
   auto err = Error::BAD_BUFFER;
   auto hnd = static_cast<private_handle_t *>(buffer);
   uint32_t num_fds = 0, num_ints = 0;
   if (buffer != nullptr && private_handle_t::validate(hnd) == 0) {
     if (static_cast<IMapper_4_0_Error>(buf_mgr_->IsBufferImported(hnd)) != Error::NONE) {
       hidl_cb(err, num_fds, num_ints);
       return Void();
     }
     num_fds = 2;
     // TODO(user): reduce to transported values;
     num_ints = static_cast<uint32_t>(hnd->numInts);
     err = Error::NONE;
   }
   ALOGD_IF(DEBUG, "GetTransportSize: num fds: %d num ints: %d err:%d", num_fds, num_ints, err);
   hidl_cb(err, num_fds, num_ints);
   return Void();
 }

 Return<void> QtiMapper::get(void *buffer, const MetadataType &metadataType, get_cb hidl_cb) {
   auto err = Error::BAD_BUFFER;
   hidl_vec<uint8_t> metadata;
   if (buffer != nullptr) {
     if (metadataType.name != GRALLOC4_STANDARD_METADATA_TYPE &&
         metadataType.name != qtigralloc::VENDOR_QTI) {
       hidl_cb(Error::UNSUPPORTED, metadata);
       return Void();
     }
     auto hnd = static_cast<private_handle_t *>(buffer);
     err = static_cast<IMapper_4_0_Error>(buf_mgr_->GetMetadata(hnd, metadataType.value, &metadata));
   }
   hidl_cb(err, metadata);
   return Void();
 }

 Return<Error> QtiMapper::set(void *buffer, const MetadataType &metadataType,
                              const hidl_vec<uint8_t> &metadata) {
   auto err = Error::BAD_BUFFER;
   if (buffer != nullptr) {
     auto hnd = static_cast<private_handle_t *>(buffer);
     err = static_cast<IMapper_4_0_Error>(buf_mgr_->SetMetadata(hnd, metadataType.value, metadata));
   }
   return err;
 }

 Return<void> QtiMapper::getFromBufferDescriptorInfo(const BufferDescriptorInfo &description,
                                                     const MetadataType &metadataType,
                                                     getFromBufferDescriptorInfo_cb hidl_cb) {
   hidl_vec<uint8_t> out;
   auto err = Error::UNSUPPORTED;
   switch (metadataType.value) {
     case static_cast<int64_t>(StandardMetadataType::NAME):
       err = static_cast<IMapper_4_0_Error>(android::gralloc4::encodeName(description.name, &out));
       break;
     case static_cast<int64_t>(StandardMetadataType::WIDTH):
       err = static_cast<IMapper_4_0_Error>(android::gralloc4::encodeWidth(description.width, &out));
       break;
     case static_cast<int64_t>(StandardMetadataType::HEIGHT):
       err =
           static_cast<IMapper_4_0_Error>(android::gralloc4::encodeHeight(description.height, &out));
       break;
     case static_cast<int64_t>(StandardMetadataType::LAYER_COUNT):
       err = static_cast<IMapper_4_0_Error>(
           android::gralloc4::encodeLayerCount(description.layerCount, &out));
       break;
     case static_cast<int64_t>(StandardMetadataType::PIXEL_FORMAT_REQUESTED):
       err = static_cast<IMapper_4_0_Error>(
           android::gralloc4::encodePixelFormatRequested(description.format, &out));
       break;
     case static_cast<int64_t>(StandardMetadataType::USAGE):
       err = static_cast<IMapper_4_0_Error>(android::gralloc4::encodeUsage(description.usage, &out));
       break;
     case static_cast<int64_t>(StandardMetadataType::COMPRESSION): {
       int format =
           gralloc::GetImplDefinedFormat(description.usage, static_cast<int>(description.format));
       if (gralloc::IsUBwcEnabled(format, description.usage)) {
         err = static_cast<IMapper_4_0_Error>(
             android::gralloc4::encodeCompression(qtigralloc::Compression_QtiUBWC, &out));
       } else {
         err = static_cast<IMapper_4_0_Error>(
             android::gralloc4::encodeCompression(android::gralloc4::Compression_None, &out));
       }
       break;
     }
     case static_cast<int64_t>(StandardMetadataType::PROTECTED_CONTENT): {
       uint64_t protected_content = 0;
       if (description.usage & GRALLOC_USAGE_PROTECTED &&
           !(description.usage & GRALLOC_USAGE_SW_READ_MASK) &&
           !(description.usage & GRALLOC_USAGE_SW_WRITE_MASK)) {
         protected_content = 1;
       }
       err = static_cast<IMapper_4_0_Error>(
           android::gralloc4::encodeProtectedContent(protected_content, &out));
       break;
     }
     case static_cast<int64_t>(StandardMetadataType::PIXEL_FORMAT_FOURCC):
     case static_cast<int64_t>(StandardMetadataType::PIXEL_FORMAT_MODIFIER): {
       int format =
           gralloc::GetImplDefinedFormat(description.usage, static_cast<int>(description.format));
       uint32_t drm_format = 0;
       uint64_t drm_format_modifier = 0;
       if (gralloc::IsUBwcEnabled(format, description.usage)) {
         gralloc::GetDRMFormat(format, private_handle_t::PRIV_FLAGS_UBWC_ALIGNED, &drm_format,
                               &drm_format_modifier);
       } else {
         gralloc::GetDRMFormat(format, 0, &drm_format, &drm_format_modifier);
       }
       if (metadataType.value == static_cast<int64_t>(StandardMetadataType::PIXEL_FORMAT_FOURCC)) {
         err = static_cast<IMapper_4_0_Error>(
             android::gralloc4::encodePixelFormatFourCC(drm_format, &out));
       } else {
         err = static_cast<IMapper_4_0_Error>(
             android::gralloc4::encodePixelFormatModifier(drm_format_modifier, &out));
       }
       break;
     }
     default:
       break;
   }

   hidl_cb(err, out);
   return Void();
 }
 Return<void> QtiMapper::flushLockedBuffer(void *buffer, flushLockedBuffer_cb hidl_cb) {
   auto err = Error::BAD_BUFFER;
   if (buffer != nullptr) {
     err = static_cast<IMapper_4_0_Error>(buf_mgr_->FlushBuffer(PRIV_HANDLE_CONST(buffer)));
   }
   // We don't have a release fence
   hidl_cb(err, hidl_handle(nullptr));
   return Void();
 }

 Return<Error> QtiMapper::rereadLockedBuffer(void *buffer) {
   auto err = Error::BAD_BUFFER;
   if (buffer != nullptr) {
     err = static_cast<IMapper_4_0_Error>(buf_mgr_->RereadBuffer(PRIV_HANDLE_CONST(buffer)));
   }
   return err;
 }

 Return<void> QtiMapper::getReservedRegion(void *buffer, getReservedRegion_cb hidl_cb) {
   auto hnd = static_cast<private_handle_t *>(buffer);
   void *reserved_region = nullptr;
   uint64_t reserved_size = 0;
   if (static_cast<IMapper_4_0_Error>(buf_mgr_->IsBufferImported(hnd)) != Error::NONE) {
     hidl_cb(Error::BAD_BUFFER, reserved_region, reserved_size);
   }
   auto err = static_cast<IMapper_4_0_Error>(
       buf_mgr_->GetReservedRegion(hnd, &reserved_region, &reserved_size));

   hidl_cb(err, reserved_region, reserved_size);
   return Void();
 }

 Error QtiMapper::DumpBufferMetadata(const private_handle_t *buffer, BufferDump *outBufferDump) {
   outBufferDump->metadataDump.resize(metadata_type_descriptions_.size());
   for (int i = 0; i < static_cast<int>(metadata_type_descriptions_.size()); i++) {
     auto type = metadata_type_descriptions_[i].metadataType;
     hidl_vec<uint8_t> metadata;
     if (static_cast<IMapper_4_0_Error>(buf_mgr_->GetMetadata(
             const_cast<private_handle_t *>(buffer), type.value, &metadata)) == Error::BAD_BUFFER) {
       // If buffer is deleted during metadata dump, return BAD_BUFFER
       return Error::BAD_BUFFER;
     }
     MetadataDump metadata_dump = {type, metadata};
     outBufferDump->metadataDump[i] = metadata_dump;
   }
   return Error::NONE;
 }
 Return<void> QtiMapper::dumpBuffer(void *buffer, dumpBuffer_cb hidl_cb) {
   BufferDump buffer_dump;
   auto hnd = PRIV_HANDLE_CONST(buffer);
   if (buffer != nullptr) {
     if (DumpBufferMetadata(hnd, &buffer_dump) == Error::NONE) {
       hidl_cb(Error::NONE, buffer_dump);
       return Void();
     }
   }
   hidl_cb(Error::BAD_BUFFER, buffer_dump);
   return Void();
 }
 Return<void> QtiMapper::dumpBuffers(dumpBuffers_cb hidl_cb) {
   hidl_vec<BufferDump> buffers_dump;
   std::vector<const private_handle_t *> handle_list;
   if (static_cast<IMapper_4_0_Error>(buf_mgr_->GetAllHandles(&handle_list)) != Error::NONE) {
     hidl_cb(Error::NO_RESOURCES, buffers_dump);
   }
   buffers_dump.resize(handle_list.size());
   for (int i = 0; i < handle_list.size(); i++) {
     BufferDump buffer_dump;
     if (DumpBufferMetadata(handle_list[i], &buffer_dump) != Error::NONE) {
       continue;
     }
     buffers_dump[i] = buffer_dump;
   }
   hidl_cb(Error::NONE, buffers_dump);
   return Void();
 }

 Return<void> QtiMapper::listSupportedMetadataTypes(listSupportedMetadataTypes_cb hidl_cb) {
   hidl_cb(Error::NONE, metadata_type_descriptions_);
   return Void();
 }

 Return<void> QtiMapper::isSupported(const BufferDescriptorInfo_4_0 &descriptor_info,
                                     isSupported_cb hidl_cb) {
   IMapperBufferDescriptor descriptor;
   auto err = CreateDescriptor(descriptor_info, &descriptor);
   if (err != Error::NONE) {
     hidl_cb(err, false);
     return Void();
   }

   gralloc::BufferDescriptor desc;
   err = static_cast<Error>(Decode(descriptor, &desc));
   if (err != Error::NONE) {
     hidl_cb(err, false);
     return Void();
   }

   buffer_handle_t buffer;
   err = static_cast<IMapper_4_0_Error>(buf_mgr_->AllocateBuffer(desc, &buffer, 0, true));
   if (err != Error::NONE) {
     hidl_cb(err, false);
   } else {
     hidl_cb(err, true);
   }

   return Void();
 }

 Return<void> QtiMapper::getMapperExtensions(QtiMapper::getMapperExtensions_cb hidl_cb) {
   if (extensions_ != nullptr) {
     hidl_cb(Error::NONE, extensions_);
   } else {
     hidl_cb(Error::UNSUPPORTED, extensions_);
   }
   return Void();
 }

 // Methods from ::android::hidl::base::V1_0::IBase follow.

 // When we are in passthrough mode, this method is used
 // by hidl to obtain the SP HAL object
 extern "C" IMapper *HIDL_FETCH_IMapper(const char * /* name */) {
   ALOGD_IF(DEBUG, "Fetching IMapper from QtiMapper");
   auto mapper = new QtiMapper();
   return static_cast<IMapper *>(mapper);
 }

 extern "C" IQtiMapper *HIDL_FETCH_IQtiMapper(const char * /* name */) {
   ALOGD_IF(DEBUG, "Fetching QtiMapper");
   return new QtiMapper();
 }

 }  // namespace implementation
 }  // namespace V4_0
 }  // namespace mapper
 }  // namespace display
 }  // namespace hardware
 }  // namespace qti
 }  // namespace vendor
	/*
	* Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are
	* met:
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* * Redistributions in binary form must reproduce the above
	* copyright notice, this list of conditions and the following
	* disclaimer in the documentation and/or other materials provided
	* with the distribution.
	* * Neither the name of The Linux Foundation nor the names of its
	* contributors may be used to endorse or promote products derived
	* from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
	* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
	* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
	* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#define ATRACE_TAG (ATRACE_TAG_GRAPHICS \| ATRACE_TAG_HAL)
	#define DEBUG 0
	#include "QtiMapper4.h"

	#include <cutils/trace.h>
	#include <qdMetaData.h>
	#include <sync/sync.h>

	#include <vector>

	#include "gr_utils.h"

	namespace vendor {
	namespace qti {
	namespace hardware {
	namespace display {
	namespace mapper {
	namespace V4_0 {
	namespace implementation {

	using gralloc::BufferInfo;

	using aidl::android::hardware::graphics::common::StandardMetadataType;
	QtiMapper::QtiMapper() {
	extensions_ = new QtiMapperExtensions();
	buf_mgr_ = BufferManager::GetInstance();
	ALOGD_IF(DEBUG, "Created QtiMapper instance");
	}

	bool QtiMapper::ValidDescriptor(const BufferDescriptorInfo_4_0 &bd) {
	unsigned int max_bpp = gralloc::GetBppForUncompressedRGB(HAL_PIXEL_FORMAT_RGBA_FP16);
	if (bd.width == 0 \|\| bd.height == 0 \|\| (OVERFLOW((bd.width * max_bpp), bd.height)) \|\|
	(static_cast<int32_t>(bd.format) <= 0) \|\| bd.layerCount <= 0) {
	return false;
	}

	return true;
	}

	Error QtiMapper::CreateDescriptor(const BufferDescriptorInfo_4_0 &descriptor_info,
	IMapperBufferDescriptor *descriptor) {
	ALOGD_IF(DEBUG,
	"BufferDescriptorInfo: name %s wxh: %dx%d usage: 0x%" PRIu64
	" format: %d layer_count: %d",
	descriptor_info.name.c_str(), descriptor_info.width, descriptor_info.height,
	descriptor_info.usage, static_cast<uint32_t>(descriptor_info.format),
	descriptor_info.layerCount);

	if (ValidDescriptor(descriptor_info)) {
	auto vec = Encode(descriptor_info);
	*descriptor = vec;
	return Error::NONE;
	} else {
	return Error::BAD_VALUE;
	}
	}

	// Methods from ::android::hardware::graphics::mapper::V2_0::IMapper follow.
	Return<void> QtiMapper::createDescriptor(const BufferDescriptorInfo_4_0 &descriptor_info,
	createDescriptor_cb hidl_cb) {
	IMapperBufferDescriptor descriptor;
	auto info_4_0 = BufferDescriptorInfo_4_0{descriptor_info.name,
	descriptor_info.width,
	descriptor_info.height,
	descriptor_info.layerCount,
	static_cast<PixelFormat>(descriptor_info.format),
	descriptor_info.usage,
	descriptor_info.reservedSize};
	auto err = CreateDescriptor(info_4_0, &descriptor);
	hidl_cb(err, descriptor);
	return Void();
	}

	Return<void> QtiMapper::importBuffer(const hidl_handle &raw_handle, importBuffer_cb hidl_cb) {
	if (!raw_handle.getNativeHandle()) {
	ALOGE("%s: Unable to import handle", __FUNCTION__);
	hidl_cb(Error::BAD_BUFFER, nullptr);
	return Void();
	}

	native_handle_t *buffer_handle = native_handle_clone(raw_handle.getNativeHandle());
	if (!buffer_handle) {
	ALOGE("%s: Unable to clone handle", __FUNCTION__);
	hidl_cb(Error::NO_RESOURCES, nullptr);
	return Void();
	}

	auto error =
	static_cast<IMapper_4_0_Error>(buf_mgr_->RetainBuffer(PRIV_HANDLE_CONST(buffer_handle)));
	if (error != Error::NONE) {
	ALOGE("%s: Unable to retain handle: %p", __FUNCTION__, buffer_handle);
	native_handle_close(buffer_handle);
	native_handle_delete(buffer_handle);

	hidl_cb(error, nullptr);
	return Void();
	}
	ALOGD_IF(DEBUG, "Imported handle: %p id: %" PRIu64, buffer_handle,
	PRIV_HANDLE_CONST(buffer_handle)->id);
	hidl_cb(Error::NONE, buffer_handle);
	return Void();
	}

	Return<Error> QtiMapper::freeBuffer(void *buffer) {
	if (!buffer) {
	return Error::BAD_BUFFER;
	}
	return static_cast<IMapper_4_0_Error>(buf_mgr_->ReleaseBuffer(PRIV_HANDLE_CONST(buffer)));
	}

	bool QtiMapper::GetFenceFd(const hidl_handle &fence_handle, int *outFenceFd) {
	auto handle = fence_handle.getNativeHandle();
	if (handle && handle->numFds > 1) {
	ALOGE("invalid fence handle with %d fds", handle->numFds);
	return false;
	}

	*outFenceFd = (handle && handle->numFds == 1) ? handle->data[0] : -1;
	return true;
	}

	void QtiMapper::WaitFenceFd(int fence_fd) {
	if (fence_fd < 0) {
	return;
	}

	const int timeout = 3000;
	ATRACE_BEGIN("fence wait");
	const int error = sync_wait(fence_fd, timeout);
	ATRACE_END();
	if (error < 0) {
	ALOGE("QtiMapper: lock fence %d didn't signal in %u ms - error: %s", fence_fd, timeout,
	strerror(errno));
	}
	}

	Error QtiMapper::LockBuffer(void *buffer, uint64_t usage, const hidl_handle &acquire_fence,
	const IMapper::Rect &access_region) {
	if (!buffer) {
	return Error::BAD_BUFFER;
	}

	int fence_fd;
	if (!GetFenceFd(acquire_fence, &fence_fd)) {
	return Error::BAD_VALUE;
	}

	if (fence_fd > 0) {
	WaitFenceFd(fence_fd);
	}

	auto hnd = PRIV_HANDLE_CONST(buffer);

	if (access_region.top < 0 \|\| access_region.left < 0 \|\| access_region.width < 0 \|\|
	access_region.height < 0 \|\| access_region.width > hnd->width \|\|
	access_region.height > hnd->height) {
	return Error::BAD_VALUE;
	}
	return static_cast<IMapper_4_0_Error>(buf_mgr_->LockBuffer(hnd, usage));
	}

	Return<void> QtiMapper::lock(void *buffer, uint64_t cpu_usage, const IMapper::Rect &access_region,
	const hidl_handle &acquire_fence, lock_cb hidl_cb) {
	auto err = LockBuffer(buffer, cpu_usage, acquire_fence, access_region);
	if (err != Error::NONE) {
	hidl_cb(err, nullptr);
	return Void();
	}

	auto hnd = PRIV_HANDLE_CONST(buffer);
	auto out_data = reinterpret_cast<void >(hnd->base);

	hidl_cb(err, out_data);
	return Void();
	}

	Return<void> QtiMapper::unlock(void *buffer, unlock_cb hidl_cb) {
	auto err = Error::BAD_BUFFER;
	if (buffer != nullptr) {
	err = static_cast<IMapper_4_0_Error>(buf_mgr_->UnlockBuffer(PRIV_HANDLE_CONST(buffer)));
	}
	// We don't have a release fence
	hidl_cb(err, hidl_handle(nullptr));
	return Void();
	}

	Return<Error> QtiMapper::validateBufferSize(void *buffer,
	const BufferDescriptorInfo_4_0 &descriptor_info,
	uint32_t /stride/) {
	auto err = Error::BAD_BUFFER;
	auto hnd = static_cast<private_handle_t *>(buffer);
	if (buffer != nullptr && private_handle_t::validate(hnd) == 0) {
	if (static_cast<IMapper_4_0_Error>(buf_mgr_->IsBufferImported(hnd)) != Error::NONE) {
	return Error::BAD_BUFFER;
	}
	auto info = gralloc::BufferInfo(descriptor_info.width, descriptor_info.height,
	static_cast<uint32_t>(descriptor_info.format),
	static_cast<uint64_t>(descriptor_info.usage));
	info.layer_count = descriptor_info.layerCount;
	err = static_cast<IMapper_4_0_Error>(buf_mgr_->ValidateBufferSize(hnd, info));
	}
	return err;
	}

	Return<void> QtiMapper::getTransportSize(void *buffer, getTransportSize_cb hidl_cb) {
	auto err = Error::BAD_BUFFER;
	auto hnd = static_cast<private_handle_t *>(buffer);
	uint32_t num_fds = 0, num_ints = 0;
	if (buffer != nullptr && private_handle_t::validate(hnd) == 0) {
	if (static_cast<IMapper_4_0_Error>(buf_mgr_->IsBufferImported(hnd)) != Error::NONE) {
	hidl_cb(err, num_fds, num_ints);
	return Void();
	}
	num_fds = 2;
	// TODO(user): reduce to transported values;
	num_ints = static_cast<uint32_t>(hnd->numInts);
	err = Error::NONE;
	}
	ALOGD_IF(DEBUG, "GetTransportSize: num fds: %d num ints: %d err:%d", num_fds, num_ints, err);
	hidl_cb(err, num_fds, num_ints);
	return Void();
	}

	Return<void> QtiMapper::get(void *buffer, const MetadataType &metadataType, get_cb hidl_cb) {
	auto err = Error::BAD_BUFFER;
	hidl_vec<uint8_t> metadata;
	if (buffer != nullptr) {
	if (metadataType.name != GRALLOC4_STANDARD_METADATA_TYPE &&
	metadataType.name != qtigralloc::VENDOR_QTI) {
	hidl_cb(Error::UNSUPPORTED, metadata);
	return Void();
	}
	auto hnd = static_cast<private_handle_t *>(buffer);
	err = static_cast<IMapper_4_0_Error>(buf_mgr_->GetMetadata(hnd, metadataType.value, &metadata));
	}
	hidl_cb(err, metadata);
	return Void();
	}

	Return<Error> QtiMapper::set(void *buffer, const MetadataType &metadataType,
	const hidl_vec<uint8_t> &metadata) {
	auto err = Error::BAD_BUFFER;
	if (buffer != nullptr) {
	auto hnd = static_cast<private_handle_t *>(buffer);
	err = static_cast<IMapper_4_0_Error>(buf_mgr_->SetMetadata(hnd, metadataType.value, metadata));
	}
	return err;
	}

	Return<void> QtiMapper::getFromBufferDescriptorInfo(const BufferDescriptorInfo &description,
	const MetadataType &metadataType,
	getFromBufferDescriptorInfo_cb hidl_cb) {
	hidl_vec<uint8_t> out;
	auto err = Error::UNSUPPORTED;
	switch (metadataType.value) {
	case static_cast<int64_t>(StandardMetadataType::NAME):
	err = static_cast<IMapper_4_0_Error>(android::gralloc4::encodeName(description.name, &out));
	break;
	case static_cast<int64_t>(StandardMetadataType::WIDTH):
	err = static_cast<IMapper_4_0_Error>(android::gralloc4::encodeWidth(description.width, &out));
	break;
	case static_cast<int64_t>(StandardMetadataType::HEIGHT):
	err =
	static_cast<IMapper_4_0_Error>(android::gralloc4::encodeHeight(description.height, &out));
	break;
	case static_cast<int64_t>(StandardMetadataType::LAYER_COUNT):
	err = static_cast<IMapper_4_0_Error>(
	android::gralloc4::encodeLayerCount(description.layerCount, &out));
	break;
	case static_cast<int64_t>(StandardMetadataType::PIXEL_FORMAT_REQUESTED):
	err = static_cast<IMapper_4_0_Error>(
	android::gralloc4::encodePixelFormatRequested(description.format, &out));
	break;
	case static_cast<int64_t>(StandardMetadataType::USAGE):
	err = static_cast<IMapper_4_0_Error>(android::gralloc4::encodeUsage(description.usage, &out));
	break;
	case static_cast<int64_t>(StandardMetadataType::COMPRESSION): {
	int format =
	gralloc::GetImplDefinedFormat(description.usage, static_cast<int>(description.format));
	if (gralloc::IsUBwcEnabled(format, description.usage)) {
	err = static_cast<IMapper_4_0_Error>(
	android::gralloc4::encodeCompression(qtigralloc::Compression_QtiUBWC, &out));
	} else {
	err = static_cast<IMapper_4_0_Error>(
	android::gralloc4::encodeCompression(android::gralloc4::Compression_None, &out));
	}
	break;
	}
	case static_cast<int64_t>(StandardMetadataType::PROTECTED_CONTENT): {
	uint64_t protected_content = 0;
	if (description.usage & GRALLOC_USAGE_PROTECTED &&
	!(description.usage & GRALLOC_USAGE_SW_READ_MASK) &&
	!(description.usage & GRALLOC_USAGE_SW_WRITE_MASK)) {
	protected_content = 1;
	}
	err = static_cast<IMapper_4_0_Error>(
	android::gralloc4::encodeProtectedContent(protected_content, &out));
	break;
	}
	case static_cast<int64_t>(StandardMetadataType::PIXEL_FORMAT_FOURCC):
	case static_cast<int64_t>(StandardMetadataType::PIXEL_FORMAT_MODIFIER): {
	int format =
	gralloc::GetImplDefinedFormat(description.usage, static_cast<int>(description.format));
	uint32_t drm_format = 0;
	uint64_t drm_format_modifier = 0;
	if (gralloc::IsUBwcEnabled(format, description.usage)) {
	gralloc::GetDRMFormat(format, private_handle_t::PRIV_FLAGS_UBWC_ALIGNED, &drm_format,
	&drm_format_modifier);
	} else {
	gralloc::GetDRMFormat(format, 0, &drm_format, &drm_format_modifier);
	}
	if (metadataType.value == static_cast<int64_t>(StandardMetadataType::PIXEL_FORMAT_FOURCC)) {
	err = static_cast<IMapper_4_0_Error>(
	android::gralloc4::encodePixelFormatFourCC(drm_format, &out));
	} else {
	err = static_cast<IMapper_4_0_Error>(
	android::gralloc4::encodePixelFormatModifier(drm_format_modifier, &out));
	}
	break;
	}
	default:
	break;
	}

	hidl_cb(err, out);
	return Void();
	}
	Return<void> QtiMapper::flushLockedBuffer(void *buffer, flushLockedBuffer_cb hidl_cb) {
	auto err = Error::BAD_BUFFER;
	if (buffer != nullptr) {
	err = static_cast<IMapper_4_0_Error>(buf_mgr_->FlushBuffer(PRIV_HANDLE_CONST(buffer)));
	}
	// We don't have a release fence
	hidl_cb(err, hidl_handle(nullptr));
	return Void();
	}

	Return<Error> QtiMapper::rereadLockedBuffer(void *buffer) {
	auto err = Error::BAD_BUFFER;
	if (buffer != nullptr) {
	err = static_cast<IMapper_4_0_Error>(buf_mgr_->RereadBuffer(PRIV_HANDLE_CONST(buffer)));
	}
	return err;
	}

	Return<void> QtiMapper::getReservedRegion(void *buffer, getReservedRegion_cb hidl_cb) {
	auto hnd = static_cast<private_handle_t *>(buffer);
	void *reserved_region = nullptr;
	uint64_t reserved_size = 0;
	if (static_cast<IMapper_4_0_Error>(buf_mgr_->IsBufferImported(hnd)) != Error::NONE) {
	hidl_cb(Error::BAD_BUFFER, reserved_region, reserved_size);
	}
	auto err = static_cast<IMapper_4_0_Error>(
	buf_mgr_->GetReservedRegion(hnd, &reserved_region, &reserved_size));

	hidl_cb(err, reserved_region, reserved_size);
	return Void();
	}

	Error QtiMapper::DumpBufferMetadata(const private_handle_t buffer, BufferDump outBufferDump) {
	outBufferDump->metadataDump.resize(metadata_type_descriptions_.size());
	for (int i = 0; i < static_cast<int>(metadata_type_descriptions_.size()); i++) {
	auto type = metadata_type_descriptions_[i].metadataType;
	hidl_vec<uint8_t> metadata;
	if (static_cast<IMapper_4_0_Error>(buf_mgr_->GetMetadata(
	const_cast<private_handle_t *>(buffer), type.value, &metadata)) == Error::BAD_BUFFER) {
	// If buffer is deleted during metadata dump, return BAD_BUFFER
	return Error::BAD_BUFFER;
	}
	MetadataDump metadata_dump = {type, metadata};
	outBufferDump->metadataDump[i] = metadata_dump;
	}
	return Error::NONE;
	}
	Return<void> QtiMapper::dumpBuffer(void *buffer, dumpBuffer_cb hidl_cb) {
	BufferDump buffer_dump;
	auto hnd = PRIV_HANDLE_CONST(buffer);
	if (buffer != nullptr) {
	if (DumpBufferMetadata(hnd, &buffer_dump) == Error::NONE) {
	hidl_cb(Error::NONE, buffer_dump);
	return Void();
	}
	}
	hidl_cb(Error::BAD_BUFFER, buffer_dump);
	return Void();
	}
	Return<void> QtiMapper::dumpBuffers(dumpBuffers_cb hidl_cb) {
	hidl_vec<BufferDump> buffers_dump;
	std::vector<const private_handle_t *> handle_list;
	if (static_cast<IMapper_4_0_Error>(buf_mgr_->GetAllHandles(&handle_list)) != Error::NONE) {
	hidl_cb(Error::NO_RESOURCES, buffers_dump);
	}
	buffers_dump.resize(handle_list.size());
	for (int i = 0; i < handle_list.size(); i++) {
	BufferDump buffer_dump;
	if (DumpBufferMetadata(handle_list[i], &buffer_dump) != Error::NONE) {
	continue;
	}
	buffers_dump[i] = buffer_dump;
	}
	hidl_cb(Error::NONE, buffers_dump);
	return Void();
	}

	Return<void> QtiMapper::listSupportedMetadataTypes(listSupportedMetadataTypes_cb hidl_cb) {
	hidl_cb(Error::NONE, metadata_type_descriptions_);
	return Void();
	}

	Return<void> QtiMapper::isSupported(const BufferDescriptorInfo_4_0 &descriptor_info,
	isSupported_cb hidl_cb) {
	IMapperBufferDescriptor descriptor;
	auto err = CreateDescriptor(descriptor_info, &descriptor);
	if (err != Error::NONE) {
	hidl_cb(err, false);
	return Void();
	}

	gralloc::BufferDescriptor desc;
	err = static_cast<Error>(Decode(descriptor, &desc));
	if (err != Error::NONE) {
	hidl_cb(err, false);
	return Void();
	}

	buffer_handle_t buffer;
	err = static_cast<IMapper_4_0_Error>(buf_mgr_->AllocateBuffer(desc, &buffer, 0, true));
	if (err != Error::NONE) {
	hidl_cb(err, false);
	} else {
	hidl_cb(err, true);
	}

	return Void();
	}

	Return<void> QtiMapper::getMapperExtensions(QtiMapper::getMapperExtensions_cb hidl_cb) {
	if (extensions_ != nullptr) {
	hidl_cb(Error::NONE, extensions_);
	} else {
	hidl_cb(Error::UNSUPPORTED, extensions_);
	}
	return Void();
	}

	// Methods from ::android::hidl::base::V1_0::IBase follow.

	// When we are in passthrough mode, this method is used
	// by hidl to obtain the SP HAL object
	extern "C" IMapper HIDL_FETCH_IMapper(const char /* name */) {
	ALOGD_IF(DEBUG, "Fetching IMapper from QtiMapper");
	auto mapper = new QtiMapper();
	return static_cast<IMapper *>(mapper);
	}

	extern "C" IQtiMapper HIDL_FETCH_IQtiMapper(const char /* name */) {
	ALOGD_IF(DEBUG, "Fetching QtiMapper");
	return new QtiMapper();
	}

	} // namespace implementation
	} // namespace V4_0
	} // namespace mapper
	} // namespace display
	} // namespace hardware
	} // namespace qti
	} // namespace vendor