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      1 /*
      2  * Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
      3 
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *   * Redistributions of source code must retain the above copyright
      8  *     notice, this list of conditions and the following disclaimer.
      9  *   * Redistributions in binary form must reproduce the above
     10  *     copyright notice, this list of conditions and the following
     11  *     disclaimer in the documentation and/or other materials provided
     12  *     with the distribution.
     13  *   * Neither the name of The Linux Foundation nor the names of its
     14  *     contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
     18  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
     21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     24  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     25  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     26  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     27  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #define ATRACE_TAG (ATRACE_TAG_GRAPHICS | ATRACE_TAG_HAL)
     31 #include <cutils/log.h>
     32 #include <utils/Trace.h>
     33 #include <cutils/trace.h>
     34 #include <sync/sync.h>
     35 #include <algorithm>
     36 #include <sstream>
     37 #include <string>
     38 
     39 #include "gr_device_impl.h"
     40 #include "gr_buf_descriptor.h"
     41 #include "gralloc_priv.h"
     42 #include "qd_utils.h"
     43 #include "qdMetaData.h"
     44 #include "gr_utils.h"
     45 
     46 int gralloc_device_open(const struct hw_module_t *module, const char *name, hw_device_t **device);
     47 
     48 int gralloc_device_close(struct hw_device_t *device);
     49 
     50 static struct hw_module_methods_t gralloc_module_methods = {.open = gralloc_device_open};
     51 
     52 struct gralloc_module_t HAL_MODULE_INFO_SYM = {
     53   .common = {
     54     .tag = HARDWARE_MODULE_TAG,
     55     .module_api_version = GRALLOC_MODULE_API_VERSION_1_0,
     56     .hal_api_version    = HARDWARE_HAL_API_VERSION,
     57     .id = GRALLOC_HARDWARE_MODULE_ID,
     58     .name = "Graphics Memory Module",
     59     .author = "Code Aurora Forum",
     60     .methods = &gralloc_module_methods,
     61     .dso = 0,
     62     .reserved = {0},
     63   },
     64 };
     65 
     66 int gralloc_device_open(const struct hw_module_t *module, const char *name, hw_device_t **device) {
     67   int status = -EINVAL;
     68   if (!strcmp(name, GRALLOC_HARDWARE_MODULE_ID)) {
     69     gralloc1::GrallocImpl * /*gralloc1_device_t*/ dev = gralloc1::GrallocImpl::GetInstance(module);
     70     *device = reinterpret_cast<hw_device_t *>(dev);
     71     if (dev) {
     72       status = 0;
     73     } else {
     74       ALOGE("Fatal error opening gralloc1 device");
     75     }
     76   }
     77   return status;
     78 }
     79 
     80 namespace gralloc1 {
     81 
     82 GrallocImpl::GrallocImpl(const hw_module_t *module) {
     83   common.tag = HARDWARE_DEVICE_TAG;
     84   common.version = GRALLOC_MODULE_API_VERSION_1_0;
     85   common.module = const_cast<hw_module_t *>(module);
     86   common.close = CloseDevice;
     87   getFunction = GetFunction;
     88   getCapabilities = GetCapabilities;
     89 
     90   initalized_ = Init();
     91 }
     92 
     93 bool GrallocImpl::Init() {
     94   buf_mgr_ = BufferManager::GetInstance();
     95   return buf_mgr_ != nullptr;
     96 }
     97 
     98 GrallocImpl::~GrallocImpl() {
     99 }
    100 
    101 int GrallocImpl::CloseDevice(hw_device_t *device __unused) {
    102   // No-op since the gralloc device is a singleton
    103   return 0;
    104 }
    105 
    106 void GrallocImpl::GetCapabilities(struct gralloc1_device *device, uint32_t *out_count,
    107                                   int32_t  /*gralloc1_capability_t*/ *out_capabilities) {
    108   if (device != nullptr) {
    109     if (out_capabilities != nullptr && *out_count >= 3) {
    110       out_capabilities[0] = GRALLOC1_CAPABILITY_TEST_ALLOCATE;
    111       out_capabilities[1] = GRALLOC1_CAPABILITY_LAYERED_BUFFERS;
    112       out_capabilities[2] = GRALLOC1_CAPABILITY_RELEASE_IMPLY_DELETE;
    113     }
    114     *out_count = 3;
    115   }
    116   return;
    117 }
    118 
    119 gralloc1_function_pointer_t GrallocImpl::GetFunction(gralloc1_device_t *device, int32_t function) {
    120   if (!device) {
    121     return NULL;
    122   }
    123 
    124   switch (function) {
    125     case GRALLOC1_FUNCTION_DUMP:
    126       return reinterpret_cast<gralloc1_function_pointer_t>(Dump);
    127     case GRALLOC1_FUNCTION_CREATE_DESCRIPTOR:
    128       return reinterpret_cast<gralloc1_function_pointer_t>(CreateBufferDescriptor);
    129     case GRALLOC1_FUNCTION_DESTROY_DESCRIPTOR:
    130       return reinterpret_cast<gralloc1_function_pointer_t>(DestroyBufferDescriptor);
    131     case GRALLOC1_FUNCTION_SET_CONSUMER_USAGE:
    132       return reinterpret_cast<gralloc1_function_pointer_t>(SetConsumerUsage);
    133     case GRALLOC1_FUNCTION_SET_DIMENSIONS:
    134       return reinterpret_cast<gralloc1_function_pointer_t>(SetBufferDimensions);
    135     case GRALLOC1_FUNCTION_SET_FORMAT:
    136       return reinterpret_cast<gralloc1_function_pointer_t>(SetColorFormat);
    137     case GRALLOC1_FUNCTION_SET_LAYER_COUNT:
    138       return reinterpret_cast<gralloc1_function_pointer_t>(SetLayerCount);
    139     case GRALLOC1_FUNCTION_SET_PRODUCER_USAGE:
    140       return reinterpret_cast<gralloc1_function_pointer_t>(SetProducerUsage);
    141     case GRALLOC1_FUNCTION_GET_BACKING_STORE:
    142       return reinterpret_cast<gralloc1_function_pointer_t>(GetBackingStore);
    143     case GRALLOC1_FUNCTION_GET_CONSUMER_USAGE:
    144       return reinterpret_cast<gralloc1_function_pointer_t>(GetConsumerUsage);
    145     case GRALLOC1_FUNCTION_GET_DIMENSIONS:
    146       return reinterpret_cast<gralloc1_function_pointer_t>(GetBufferDimensions);
    147     case GRALLOC1_FUNCTION_GET_FORMAT:
    148       return reinterpret_cast<gralloc1_function_pointer_t>(GetColorFormat);
    149     case GRALLOC1_FUNCTION_GET_LAYER_COUNT:
    150       return reinterpret_cast<gralloc1_function_pointer_t>(GetLayerCount);
    151     case GRALLOC1_FUNCTION_GET_PRODUCER_USAGE:
    152       return reinterpret_cast<gralloc1_function_pointer_t>(GetProducerUsage);
    153     case GRALLOC1_FUNCTION_GET_STRIDE:
    154       return reinterpret_cast<gralloc1_function_pointer_t>(GetBufferStride);
    155     case GRALLOC1_FUNCTION_ALLOCATE:
    156       return reinterpret_cast<gralloc1_function_pointer_t>(AllocateBuffers);
    157     case GRALLOC1_FUNCTION_RETAIN:
    158       return reinterpret_cast<gralloc1_function_pointer_t>(RetainBuffer);
    159     case GRALLOC1_FUNCTION_RELEASE:
    160       return reinterpret_cast<gralloc1_function_pointer_t>(ReleaseBuffer);
    161     case GRALLOC1_FUNCTION_GET_NUM_FLEX_PLANES:
    162       return reinterpret_cast<gralloc1_function_pointer_t>(GetNumFlexPlanes);
    163     case GRALLOC1_FUNCTION_LOCK:
    164       return reinterpret_cast<gralloc1_function_pointer_t>(LockBuffer);
    165     case GRALLOC1_FUNCTION_LOCK_FLEX:
    166       return reinterpret_cast<gralloc1_function_pointer_t>(LockFlex);
    167     case GRALLOC1_FUNCTION_UNLOCK:
    168       return reinterpret_cast<gralloc1_function_pointer_t>(UnlockBuffer);
    169     case GRALLOC1_FUNCTION_PERFORM:
    170       return reinterpret_cast<gralloc1_function_pointer_t>(Gralloc1Perform);
    171     default:
    172       ALOGE("%s:Gralloc Error. Client Requested for unsupported function", __FUNCTION__);
    173       return NULL;
    174   }
    175 
    176   return NULL;
    177 }
    178 
    179 gralloc1_error_t GrallocImpl::Dump(gralloc1_device_t *device, uint32_t *out_size,
    180                                    char *out_buffer) {
    181   if (!device) {
    182     ALOGE("Gralloc Error : device=%p", (void *)device);
    183     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    184   }
    185   const size_t max_dump_size = 8192;
    186   if (out_buffer == nullptr) {
    187     *out_size = max_dump_size;
    188   } else {
    189     std::ostringstream os;
    190     os << "-------------------------------" << std::endl;
    191     os << "QTI gralloc dump:" << std::endl;
    192     os << "-------------------------------" << std::endl;
    193     GrallocImpl const *dev = GRALLOC_IMPL(device);
    194     dev->buf_mgr_->Dump(&os);
    195     os << "-------------------------------" << std::endl;
    196     auto copied = os.str().copy(out_buffer, std::min(os.str().size(), max_dump_size), 0);
    197     *out_size = UINT(copied);
    198   }
    199 
    200   return GRALLOC1_ERROR_NONE;
    201 }
    202 
    203 gralloc1_error_t GrallocImpl::CheckDeviceAndHandle(gralloc1_device_t *device,
    204                                                    buffer_handle_t buffer) {
    205   const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    206   if (!device || (private_handle_t::validate(hnd) != 0)) {
    207     ALOGE("Gralloc Error : device= %p, buffer-handle=%p", (void *)device, (void *)buffer);
    208     return GRALLOC1_ERROR_BAD_HANDLE;
    209   }
    210 
    211   return GRALLOC1_ERROR_NONE;
    212 }
    213 
    214 gralloc1_error_t GrallocImpl::CreateBufferDescriptor(gralloc1_device_t *device,
    215                                                      gralloc1_buffer_descriptor_t *out_descriptor) {
    216   if (!device) {
    217     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    218   }
    219   GrallocImpl const *dev = GRALLOC_IMPL(device);
    220   return dev->buf_mgr_->CreateBufferDescriptor(out_descriptor);
    221 }
    222 
    223 gralloc1_error_t GrallocImpl::DestroyBufferDescriptor(gralloc1_device_t *device,
    224                                                       gralloc1_buffer_descriptor_t descriptor) {
    225   if (!device) {
    226     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    227   }
    228   GrallocImpl const *dev = GRALLOC_IMPL(device);
    229   return dev->buf_mgr_->DestroyBufferDescriptor(descriptor);
    230 }
    231 
    232 gralloc1_error_t GrallocImpl::SetConsumerUsage(gralloc1_device_t *device,
    233                                                gralloc1_buffer_descriptor_t descriptor,
    234                                                gralloc1_consumer_usage_t usage) {
    235   if (!device) {
    236     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    237   } else {
    238     GrallocImpl const *dev = GRALLOC_IMPL(device);
    239     return dev->buf_mgr_->CallBufferDescriptorFunction(descriptor,
    240                                                        &BufferDescriptor::SetConsumerUsage, usage);
    241   }
    242 }
    243 
    244 gralloc1_error_t GrallocImpl::SetBufferDimensions(gralloc1_device_t *device,
    245                                                   gralloc1_buffer_descriptor_t descriptor,
    246                                                   uint32_t width, uint32_t height) {
    247   if (!device) {
    248     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    249   } else {
    250     GrallocImpl const *dev = GRALLOC_IMPL(device);
    251     return dev->buf_mgr_->CallBufferDescriptorFunction(descriptor,
    252                                                        &BufferDescriptor::SetDimensions,
    253                                                        INT(width), INT(height));
    254   }
    255 }
    256 
    257 gralloc1_error_t GrallocImpl::SetColorFormat(gralloc1_device_t *device,
    258                                              gralloc1_buffer_descriptor_t descriptor,
    259                                              int32_t format) {
    260   if (!device) {
    261     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    262   } else {
    263     GrallocImpl const *dev = GRALLOC_IMPL(device);
    264     return dev->buf_mgr_->CallBufferDescriptorFunction(descriptor,
    265                                                        &BufferDescriptor::SetColorFormat, format);
    266   }
    267 }
    268 
    269 gralloc1_error_t GrallocImpl::SetLayerCount(gralloc1_device_t *device,
    270                                             gralloc1_buffer_descriptor_t descriptor,
    271                                             uint32_t layer_count) {
    272   if (!device) {
    273     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    274   } else {
    275     GrallocImpl const *dev = GRALLOC_IMPL(device);
    276     return dev->buf_mgr_->CallBufferDescriptorFunction(descriptor,
    277                                                        &BufferDescriptor::SetLayerCount,
    278                                                        layer_count);
    279   }
    280 }
    281 
    282 gralloc1_error_t GrallocImpl::SetProducerUsage(gralloc1_device_t *device,
    283                                                gralloc1_buffer_descriptor_t descriptor,
    284                                                gralloc1_producer_usage_t usage) {
    285   if (!device) {
    286     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    287   } else {
    288     GrallocImpl const *dev = GRALLOC_IMPL(device);
    289     return dev->buf_mgr_->CallBufferDescriptorFunction(descriptor,
    290                                                        &BufferDescriptor::SetProducerUsage, usage);
    291   }
    292 }
    293 
    294 gralloc1_error_t GrallocImpl::GetBackingStore(gralloc1_device_t *device, buffer_handle_t buffer,
    295                                               gralloc1_backing_store_t *out_backstore) {
    296   if (!device || !buffer) {
    297     return GRALLOC1_ERROR_BAD_HANDLE;
    298   }
    299 
    300   *out_backstore =
    301       static_cast<gralloc1_backing_store_t>(PRIV_HANDLE_CONST(buffer)->GetBackingstore());
    302 
    303   return GRALLOC1_ERROR_NONE;
    304 }
    305 
    306 gralloc1_error_t GrallocImpl::GetConsumerUsage(gralloc1_device_t *device, buffer_handle_t buffer,
    307                                                gralloc1_consumer_usage_t *outUsage) {
    308   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    309   if (status == GRALLOC1_ERROR_NONE) {
    310     *outUsage = PRIV_HANDLE_CONST(buffer)->GetConsumerUsage();
    311   }
    312 
    313   return status;
    314 }
    315 
    316 gralloc1_error_t GrallocImpl::GetBufferDimensions(gralloc1_device_t *device, buffer_handle_t buffer,
    317                                                   uint32_t *outWidth, uint32_t *outHeight) {
    318   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    319   if (status == GRALLOC1_ERROR_NONE) {
    320     const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    321     *outWidth = UINT(hnd->GetUnalignedWidth());
    322     *outHeight = UINT(hnd->GetUnalignedHeight());
    323   }
    324 
    325   return status;
    326 }
    327 
    328 gralloc1_error_t GrallocImpl::GetColorFormat(gralloc1_device_t *device, buffer_handle_t buffer,
    329                                              int32_t *outFormat) {
    330   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    331   if (status == GRALLOC1_ERROR_NONE) {
    332     *outFormat = PRIV_HANDLE_CONST(buffer)->GetColorFormat();
    333   }
    334 
    335   return status;
    336 }
    337 
    338 gralloc1_error_t GrallocImpl::GetLayerCount(gralloc1_device_t *device, buffer_handle_t buffer,
    339                                             uint32_t *outLayerCount) {
    340   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    341   if (status == GRALLOC1_ERROR_NONE) {
    342     *outLayerCount = PRIV_HANDLE_CONST(buffer)->GetLayerCount();
    343   }
    344 
    345   return status;
    346 }
    347 
    348 gralloc1_error_t GrallocImpl::GetProducerUsage(gralloc1_device_t *device, buffer_handle_t buffer,
    349                                                gralloc1_producer_usage_t *outUsage) {
    350   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    351   if (status == GRALLOC1_ERROR_NONE) {
    352     const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    353     *outUsage = hnd->GetProducerUsage();
    354   }
    355 
    356   return status;
    357 }
    358 
    359 gralloc1_error_t GrallocImpl::GetBufferStride(gralloc1_device_t *device, buffer_handle_t buffer,
    360                                               uint32_t *outStride) {
    361   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    362   if (status == GRALLOC1_ERROR_NONE) {
    363     *outStride = UINT(PRIV_HANDLE_CONST(buffer)->GetStride());
    364   }
    365 
    366   return status;
    367 }
    368 
    369 gralloc1_error_t GrallocImpl::AllocateBuffers(gralloc1_device_t *device, uint32_t num_descriptors,
    370                                               const gralloc1_buffer_descriptor_t *descriptors,
    371                                               buffer_handle_t *out_buffers) {
    372   if (!num_descriptors || !descriptors) {
    373     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    374   }
    375 
    376   GrallocImpl const *dev = GRALLOC_IMPL(device);
    377   gralloc1_error_t status = dev->buf_mgr_->AllocateBuffers(num_descriptors, descriptors,
    378                                                            out_buffers);
    379 
    380   return status;
    381 }
    382 
    383 gralloc1_error_t GrallocImpl::RetainBuffer(gralloc1_device_t *device, buffer_handle_t buffer) {
    384   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    385   if (status == GRALLOC1_ERROR_NONE) {
    386     const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    387     GrallocImpl const *dev = GRALLOC_IMPL(device);
    388     status = dev->buf_mgr_->RetainBuffer(hnd);
    389   }
    390 
    391   return status;
    392 }
    393 
    394 gralloc1_error_t GrallocImpl::ReleaseBuffer(gralloc1_device_t *device, buffer_handle_t buffer) {
    395   if (!device || !buffer) {
    396     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    397   }
    398 
    399   const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    400   GrallocImpl const *dev = GRALLOC_IMPL(device);
    401   return dev->buf_mgr_->ReleaseBuffer(hnd);
    402 }
    403 
    404 gralloc1_error_t GrallocImpl::GetNumFlexPlanes(gralloc1_device_t *device, buffer_handle_t buffer,
    405                                                uint32_t *out_num_planes) {
    406   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    407   if (status == GRALLOC1_ERROR_NONE) {
    408     GrallocImpl const *dev = GRALLOC_IMPL(device);
    409     const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    410     status = dev->buf_mgr_->GetNumFlexPlanes(hnd, out_num_planes);
    411   }
    412   return status;
    413 }
    414 
    415 static inline void CloseFdIfValid(int fd) {
    416   if (fd > 0) {
    417     close(fd);
    418   }
    419 }
    420 
    421 gralloc1_error_t GrallocImpl::LockBuffer(gralloc1_device_t *device, buffer_handle_t buffer,
    422                                          gralloc1_producer_usage_t prod_usage,
    423                                          gralloc1_consumer_usage_t cons_usage,
    424                                          const gralloc1_rect_t *region, void **out_data,
    425                                          int32_t acquire_fence) {
    426   ATRACE_CALL();
    427   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    428   if (status != GRALLOC1_ERROR_NONE) {
    429     CloseFdIfValid(acquire_fence);
    430     return status;
    431   }
    432 
    433   if (acquire_fence > 0) {
    434     ATRACE_BEGIN("fence wait");
    435     int error = sync_wait(acquire_fence, 1000);
    436     ATRACE_END();
    437     CloseFdIfValid(acquire_fence);
    438     if (error < 0) {
    439       ALOGE("%s: sync_wait timedout! error = %s", __FUNCTION__, strerror(errno));
    440       return GRALLOC1_ERROR_UNDEFINED;
    441     }
    442   }
    443 
    444   const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    445   GrallocImpl const *dev = GRALLOC_IMPL(device);
    446 
    447   // Either producer usage or consumer usage must be *_USAGE_NONE
    448   if ((prod_usage != GRALLOC1_PRODUCER_USAGE_NONE) &&
    449       (cons_usage != GRALLOC1_CONSUMER_USAGE_NONE)) {
    450     // Current gralloc1 clients do not satisfy this restriction.
    451     // See b/33588773 for details
    452     // return GRALLOC1_ERROR_BAD_VALUE;
    453   }
    454 
    455   // currently we ignore the region/rect client wants to lock
    456   if (region == NULL) {
    457     return GRALLOC1_ERROR_BAD_VALUE;
    458   }
    459   // TODO(user): Need to check if buffer was allocated with the same flags
    460   status = dev->buf_mgr_->LockBuffer(hnd, prod_usage, cons_usage);
    461 
    462   *out_data = reinterpret_cast<void *>(hnd->base);
    463 
    464   return status;
    465 }
    466 
    467 gralloc1_error_t GrallocImpl::LockFlex(gralloc1_device_t *device, buffer_handle_t buffer,
    468                                        gralloc1_producer_usage_t prod_usage,
    469                                        gralloc1_consumer_usage_t cons_usage,
    470                                        const gralloc1_rect_t *region,
    471                                        struct android_flex_layout *out_flex_layout,
    472                                        int32_t acquire_fence) {
    473   void *out_data;
    474   gralloc1_error_t status = GrallocImpl::LockBuffer(device, buffer, prod_usage, cons_usage, region,
    475                                                     &out_data, acquire_fence);
    476   if (status != GRALLOC1_ERROR_NONE) {
    477     return status;
    478   }
    479 
    480   GrallocImpl const *dev = GRALLOC_IMPL(device);
    481   const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    482   dev->buf_mgr_->GetFlexLayout(hnd, out_flex_layout);
    483   return status;
    484 }
    485 
    486 gralloc1_error_t GrallocImpl::UnlockBuffer(gralloc1_device_t *device, buffer_handle_t buffer,
    487                                            int32_t *release_fence) {
    488   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    489 
    490   if (status != GRALLOC1_ERROR_NONE) {
    491     return status;
    492   }
    493 
    494   const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    495   GrallocImpl const *dev = GRALLOC_IMPL(device);
    496 
    497   *release_fence = -1;
    498 
    499   return dev->buf_mgr_->UnlockBuffer(hnd);
    500 }
    501 
    502 gralloc1_error_t GrallocImpl::Gralloc1Perform(gralloc1_device_t *device, int operation, ...) {
    503   va_list args;
    504   va_start(args, operation);
    505   GrallocImpl const *dev = GRALLOC_IMPL(device);
    506   gralloc1_error_t err = dev->buf_mgr_->Perform(operation, args);
    507   va_end(args);
    508 
    509   return err;
    510 }
    511 
    512 }  // namespace gralloc1
    513