Home | History | Annotate | Download | only in libgralloc1
      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 #include <cutils/log.h>
     31 #include <sync/sync.h>
     32 #include <algorithm>
     33 #include <sstream>
     34 #include <string>
     35 
     36 #include "gr_device_impl.h"
     37 #include "gr_buf_descriptor.h"
     38 #include "gralloc_priv.h"
     39 #include "qd_utils.h"
     40 #include "qdMetaData.h"
     41 #include "gr_utils.h"
     42 
     43 int gralloc_device_open(const struct hw_module_t *module, const char *name, hw_device_t **device);
     44 
     45 int gralloc_device_close(struct hw_device_t *device);
     46 
     47 static struct hw_module_methods_t gralloc_module_methods = {.open = gralloc_device_open};
     48 
     49 struct gralloc_module_t HAL_MODULE_INFO_SYM = {
     50   .common = {
     51     .tag = HARDWARE_MODULE_TAG,
     52     .module_api_version = GRALLOC_MODULE_API_VERSION_1_0,
     53     .hal_api_version    = HARDWARE_HAL_API_VERSION,
     54     .id = GRALLOC_HARDWARE_MODULE_ID,
     55     .name = "Graphics Memory Module",
     56     .author = "Code Aurora Forum",
     57     .methods = &gralloc_module_methods,
     58     .dso = 0,
     59     .reserved = {0},
     60   },
     61 };
     62 
     63 int gralloc_device_open(const struct hw_module_t *module, const char *name, hw_device_t **device) {
     64   int status = -EINVAL;
     65   if (!strcmp(name, GRALLOC_HARDWARE_MODULE_ID)) {
     66     gralloc1::GrallocImpl * /*gralloc1_device_t*/ dev = gralloc1::GrallocImpl::GetInstance(module);
     67     *device = reinterpret_cast<hw_device_t *>(dev);
     68     if (dev) {
     69       status = 0;
     70     } else {
     71       ALOGE("Fatal error opening gralloc1 device");
     72     }
     73   }
     74   return status;
     75 }
     76 
     77 namespace gralloc1 {
     78 
     79 GrallocImpl::GrallocImpl(const hw_module_t *module) {
     80   common.tag = HARDWARE_DEVICE_TAG;
     81   common.version = GRALLOC_MODULE_API_VERSION_1_0;
     82   common.module = const_cast<hw_module_t *>(module);
     83   common.close = CloseDevice;
     84   getFunction = GetFunction;
     85   getCapabilities = GetCapabilities;
     86 
     87   initalized_ = Init();
     88 }
     89 
     90 bool GrallocImpl::Init() {
     91   buf_mgr_ = BufferManager::GetInstance();
     92   return buf_mgr_ != nullptr;
     93 }
     94 
     95 GrallocImpl::~GrallocImpl() {
     96 }
     97 
     98 int GrallocImpl::CloseDevice(hw_device_t *device __unused) {
     99   // No-op since the gralloc device is a singleton
    100   return 0;
    101 }
    102 
    103 void GrallocImpl::GetCapabilities(struct gralloc1_device *device, uint32_t *out_count,
    104                                   int32_t  /*gralloc1_capability_t*/ *out_capabilities) {
    105   if (device != nullptr) {
    106     if (out_capabilities != nullptr && *out_count >= 3) {
    107       out_capabilities[0] = GRALLOC1_CAPABILITY_TEST_ALLOCATE;
    108       out_capabilities[1] = GRALLOC1_CAPABILITY_LAYERED_BUFFERS;
    109       out_capabilities[2] = GRALLOC1_CAPABILITY_RELEASE_IMPLY_DELETE;
    110     }
    111     *out_count = 3;
    112   }
    113   return;
    114 }
    115 
    116 gralloc1_function_pointer_t GrallocImpl::GetFunction(gralloc1_device_t *device, int32_t function) {
    117   if (!device) {
    118     return NULL;
    119   }
    120 
    121   switch (function) {
    122     case GRALLOC1_FUNCTION_DUMP:
    123       return reinterpret_cast<gralloc1_function_pointer_t>(Dump);
    124     case GRALLOC1_FUNCTION_CREATE_DESCRIPTOR:
    125       return reinterpret_cast<gralloc1_function_pointer_t>(CreateBufferDescriptor);
    126     case GRALLOC1_FUNCTION_DESTROY_DESCRIPTOR:
    127       return reinterpret_cast<gralloc1_function_pointer_t>(DestroyBufferDescriptor);
    128     case GRALLOC1_FUNCTION_SET_CONSUMER_USAGE:
    129       return reinterpret_cast<gralloc1_function_pointer_t>(SetConsumerUsage);
    130     case GRALLOC1_FUNCTION_SET_DIMENSIONS:
    131       return reinterpret_cast<gralloc1_function_pointer_t>(SetBufferDimensions);
    132     case GRALLOC1_FUNCTION_SET_FORMAT:
    133       return reinterpret_cast<gralloc1_function_pointer_t>(SetColorFormat);
    134     case GRALLOC1_FUNCTION_SET_LAYER_COUNT:
    135       return reinterpret_cast<gralloc1_function_pointer_t>(SetLayerCount);
    136     case GRALLOC1_FUNCTION_SET_PRODUCER_USAGE:
    137       return reinterpret_cast<gralloc1_function_pointer_t>(SetProducerUsage);
    138     case GRALLOC1_FUNCTION_GET_BACKING_STORE:
    139       return reinterpret_cast<gralloc1_function_pointer_t>(GetBackingStore);
    140     case GRALLOC1_FUNCTION_GET_CONSUMER_USAGE:
    141       return reinterpret_cast<gralloc1_function_pointer_t>(GetConsumerUsage);
    142     case GRALLOC1_FUNCTION_GET_DIMENSIONS:
    143       return reinterpret_cast<gralloc1_function_pointer_t>(GetBufferDimensions);
    144     case GRALLOC1_FUNCTION_GET_FORMAT:
    145       return reinterpret_cast<gralloc1_function_pointer_t>(GetColorFormat);
    146     case GRALLOC1_FUNCTION_GET_LAYER_COUNT:
    147       return reinterpret_cast<gralloc1_function_pointer_t>(GetLayerCount);
    148     case GRALLOC1_FUNCTION_GET_PRODUCER_USAGE:
    149       return reinterpret_cast<gralloc1_function_pointer_t>(GetProducerUsage);
    150     case GRALLOC1_FUNCTION_GET_STRIDE:
    151       return reinterpret_cast<gralloc1_function_pointer_t>(GetBufferStride);
    152     case GRALLOC1_FUNCTION_ALLOCATE:
    153       return reinterpret_cast<gralloc1_function_pointer_t>(AllocateBuffers);
    154     case GRALLOC1_FUNCTION_RETAIN:
    155       return reinterpret_cast<gralloc1_function_pointer_t>(RetainBuffer);
    156     case GRALLOC1_FUNCTION_RELEASE:
    157       return reinterpret_cast<gralloc1_function_pointer_t>(ReleaseBuffer);
    158     case GRALLOC1_FUNCTION_GET_NUM_FLEX_PLANES:
    159       return reinterpret_cast<gralloc1_function_pointer_t>(GetNumFlexPlanes);
    160     case GRALLOC1_FUNCTION_LOCK:
    161       return reinterpret_cast<gralloc1_function_pointer_t>(LockBuffer);
    162     case GRALLOC1_FUNCTION_LOCK_FLEX:
    163       return reinterpret_cast<gralloc1_function_pointer_t>(LockFlex);
    164     case GRALLOC1_FUNCTION_UNLOCK:
    165       return reinterpret_cast<gralloc1_function_pointer_t>(UnlockBuffer);
    166     case GRALLOC1_FUNCTION_PERFORM:
    167       return reinterpret_cast<gralloc1_function_pointer_t>(Gralloc1Perform);
    168     default:
    169       ALOGE("%s:Gralloc Error. Client Requested for unsupported function", __FUNCTION__);
    170       return NULL;
    171   }
    172 
    173   return NULL;
    174 }
    175 
    176 gralloc1_error_t GrallocImpl::Dump(gralloc1_device_t *device, uint32_t *out_size,
    177                                    char *out_buffer __unused) {
    178   if (!device) {
    179     ALOGE("Gralloc Error : device=%p", (void *)device);
    180     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    181   }
    182   // nothing to dump
    183   *out_size = 0;
    184 
    185   return GRALLOC1_ERROR_NONE;
    186 }
    187 
    188 gralloc1_error_t GrallocImpl::CheckDeviceAndHandle(gralloc1_device_t *device,
    189                                                    buffer_handle_t buffer) {
    190   const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    191   if (!device || (private_handle_t::validate(hnd) != 0)) {
    192     ALOGE("Gralloc Error : device= %p, buffer-handle=%p", (void *)device, (void *)buffer);
    193     return GRALLOC1_ERROR_BAD_HANDLE;
    194   }
    195 
    196   return GRALLOC1_ERROR_NONE;
    197 }
    198 
    199 gralloc1_error_t GrallocImpl::CreateBufferDescriptor(gralloc1_device_t *device,
    200                                                      gralloc1_buffer_descriptor_t *out_descriptor) {
    201   if (!device) {
    202     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    203   }
    204   GrallocImpl const *dev = GRALLOC_IMPL(device);
    205   return dev->buf_mgr_->CreateBufferDescriptor(out_descriptor);
    206 }
    207 
    208 gralloc1_error_t GrallocImpl::DestroyBufferDescriptor(gralloc1_device_t *device,
    209                                                       gralloc1_buffer_descriptor_t descriptor) {
    210   if (!device) {
    211     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    212   }
    213   GrallocImpl const *dev = GRALLOC_IMPL(device);
    214   return dev->buf_mgr_->DestroyBufferDescriptor(descriptor);
    215 }
    216 
    217 gralloc1_error_t GrallocImpl::SetConsumerUsage(gralloc1_device_t *device,
    218                                                gralloc1_buffer_descriptor_t descriptor,
    219                                                gralloc1_consumer_usage_t usage) {
    220   if (!device) {
    221     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    222   } else {
    223     GrallocImpl const *dev = GRALLOC_IMPL(device);
    224     return dev->buf_mgr_->CallBufferDescriptorFunction(descriptor,
    225                                                        &BufferDescriptor::SetConsumerUsage, usage);
    226   }
    227 }
    228 
    229 gralloc1_error_t GrallocImpl::SetBufferDimensions(gralloc1_device_t *device,
    230                                                   gralloc1_buffer_descriptor_t descriptor,
    231                                                   uint32_t width, uint32_t height) {
    232   if (!device) {
    233     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    234   } else {
    235     GrallocImpl const *dev = GRALLOC_IMPL(device);
    236     return dev->buf_mgr_->CallBufferDescriptorFunction(descriptor,
    237                                                        &BufferDescriptor::SetDimensions,
    238                                                        INT(width), INT(height));
    239   }
    240 }
    241 
    242 gralloc1_error_t GrallocImpl::SetColorFormat(gralloc1_device_t *device,
    243                                              gralloc1_buffer_descriptor_t descriptor,
    244                                              int32_t format) {
    245   if (!device) {
    246     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    247   } else {
    248     GrallocImpl const *dev = GRALLOC_IMPL(device);
    249     return dev->buf_mgr_->CallBufferDescriptorFunction(descriptor,
    250                                                        &BufferDescriptor::SetColorFormat, format);
    251   }
    252 }
    253 
    254 gralloc1_error_t GrallocImpl::SetLayerCount(gralloc1_device_t *device,
    255                                             gralloc1_buffer_descriptor_t descriptor,
    256                                             uint32_t layer_count) {
    257   if (!device) {
    258     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    259   } else {
    260     GrallocImpl const *dev = GRALLOC_IMPL(device);
    261     return dev->buf_mgr_->CallBufferDescriptorFunction(descriptor,
    262                                                        &BufferDescriptor::SetLayerCount,
    263                                                        layer_count);
    264   }
    265 }
    266 
    267 gralloc1_error_t GrallocImpl::SetProducerUsage(gralloc1_device_t *device,
    268                                                gralloc1_buffer_descriptor_t descriptor,
    269                                                gralloc1_producer_usage_t usage) {
    270   if (!device) {
    271     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    272   } else {
    273     GrallocImpl const *dev = GRALLOC_IMPL(device);
    274     return dev->buf_mgr_->CallBufferDescriptorFunction(descriptor,
    275                                                        &BufferDescriptor::SetProducerUsage, usage);
    276   }
    277 }
    278 
    279 gralloc1_error_t GrallocImpl::GetBackingStore(gralloc1_device_t *device, buffer_handle_t buffer,
    280                                               gralloc1_backing_store_t *out_backstore) {
    281   if (!device || !buffer) {
    282     return GRALLOC1_ERROR_BAD_HANDLE;
    283   }
    284 
    285   *out_backstore =
    286       static_cast<gralloc1_backing_store_t>(PRIV_HANDLE_CONST(buffer)->GetBackingstore());
    287 
    288   return GRALLOC1_ERROR_NONE;
    289 }
    290 
    291 gralloc1_error_t GrallocImpl::GetConsumerUsage(gralloc1_device_t *device, buffer_handle_t buffer,
    292                                                gralloc1_consumer_usage_t *outUsage) {
    293   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    294   if (status == GRALLOC1_ERROR_NONE) {
    295     *outUsage = PRIV_HANDLE_CONST(buffer)->GetConsumerUsage();
    296   }
    297 
    298   return status;
    299 }
    300 
    301 gralloc1_error_t GrallocImpl::GetBufferDimensions(gralloc1_device_t *device, buffer_handle_t buffer,
    302                                                   uint32_t *outWidth, uint32_t *outHeight) {
    303   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    304   if (status == GRALLOC1_ERROR_NONE) {
    305     const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    306     *outWidth = UINT(hnd->GetUnalignedWidth());
    307     *outHeight = UINT(hnd->GetUnalignedHeight());
    308   }
    309 
    310   return status;
    311 }
    312 
    313 gralloc1_error_t GrallocImpl::GetColorFormat(gralloc1_device_t *device, buffer_handle_t buffer,
    314                                              int32_t *outFormat) {
    315   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    316   if (status == GRALLOC1_ERROR_NONE) {
    317     *outFormat = PRIV_HANDLE_CONST(buffer)->GetColorFormat();
    318   }
    319 
    320   return status;
    321 }
    322 
    323 gralloc1_error_t GrallocImpl::GetLayerCount(gralloc1_device_t *device, buffer_handle_t buffer,
    324                                             uint32_t *outLayerCount) {
    325   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    326   if (status == GRALLOC1_ERROR_NONE) {
    327     *outLayerCount = PRIV_HANDLE_CONST(buffer)->GetLayerCount();
    328   }
    329 
    330   return status;
    331 }
    332 
    333 gralloc1_error_t GrallocImpl::GetProducerUsage(gralloc1_device_t *device, buffer_handle_t buffer,
    334                                                gralloc1_producer_usage_t *outUsage) {
    335   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    336   if (status == GRALLOC1_ERROR_NONE) {
    337     const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    338     *outUsage = hnd->GetProducerUsage();
    339   }
    340 
    341   return status;
    342 }
    343 
    344 gralloc1_error_t GrallocImpl::GetBufferStride(gralloc1_device_t *device, buffer_handle_t buffer,
    345                                               uint32_t *outStride) {
    346   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    347   if (status == GRALLOC1_ERROR_NONE) {
    348     *outStride = UINT(PRIV_HANDLE_CONST(buffer)->GetStride());
    349   }
    350 
    351   return status;
    352 }
    353 
    354 gralloc1_error_t GrallocImpl::AllocateBuffers(gralloc1_device_t *device, uint32_t num_descriptors,
    355                                               const gralloc1_buffer_descriptor_t *descriptors,
    356                                               buffer_handle_t *out_buffers) {
    357   if (!num_descriptors || !descriptors) {
    358     return GRALLOC1_ERROR_BAD_DESCRIPTOR;
    359   }
    360 
    361   GrallocImpl const *dev = GRALLOC_IMPL(device);
    362   gralloc1_error_t status = dev->buf_mgr_->AllocateBuffers(num_descriptors, descriptors,
    363                                                            out_buffers);
    364 
    365   return status;
    366 }
    367 
    368 gralloc1_error_t GrallocImpl::RetainBuffer(gralloc1_device_t *device, buffer_handle_t buffer) {
    369   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    370   if (status == GRALLOC1_ERROR_NONE) {
    371     const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    372     GrallocImpl const *dev = GRALLOC_IMPL(device);
    373     status = dev->buf_mgr_->RetainBuffer(hnd);
    374   }
    375 
    376   return status;
    377 }
    378 
    379 gralloc1_error_t GrallocImpl::ReleaseBuffer(gralloc1_device_t *device, buffer_handle_t buffer) {
    380   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    381   if (status == GRALLOC1_ERROR_NONE) {
    382     const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    383     GrallocImpl const *dev = GRALLOC_IMPL(device);
    384     status = dev->buf_mgr_->ReleaseBuffer(hnd);
    385   }
    386 
    387   return status;
    388 }
    389 
    390 gralloc1_error_t GrallocImpl::GetNumFlexPlanes(gralloc1_device_t *device, buffer_handle_t buffer,
    391                                                uint32_t *out_num_planes) {
    392   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    393   if (status == GRALLOC1_ERROR_NONE) {
    394     GrallocImpl const *dev = GRALLOC_IMPL(device);
    395     const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    396     status = dev->buf_mgr_->GetNumFlexPlanes(hnd, out_num_planes);
    397   }
    398   return status;
    399 }
    400 
    401 static inline void CloseFdIfValid(int fd) {
    402   if (fd > 0) {
    403     close(fd);
    404   }
    405 }
    406 
    407 gralloc1_error_t GrallocImpl::LockBuffer(gralloc1_device_t *device, buffer_handle_t buffer,
    408                                          gralloc1_producer_usage_t prod_usage,
    409                                          gralloc1_consumer_usage_t cons_usage,
    410                                          const gralloc1_rect_t *region, void **out_data,
    411                                          int32_t acquire_fence) {
    412   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    413   if (status != GRALLOC1_ERROR_NONE) {
    414     CloseFdIfValid(acquire_fence);
    415     return status;
    416   }
    417 
    418   if (acquire_fence > 0) {
    419     int error = sync_wait(acquire_fence, 1000);
    420     CloseFdIfValid(acquire_fence);
    421     if (error < 0) {
    422       ALOGE("%s: sync_wait timedout! error = %s", __FUNCTION__, strerror(errno));
    423       return GRALLOC1_ERROR_UNDEFINED;
    424     }
    425   }
    426 
    427   const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    428   GrallocImpl const *dev = GRALLOC_IMPL(device);
    429 
    430   // Either producer usage or consumer usage must be *_USAGE_NONE
    431   if ((prod_usage != GRALLOC1_PRODUCER_USAGE_NONE) &&
    432       (cons_usage != GRALLOC1_CONSUMER_USAGE_NONE)) {
    433     // Current gralloc1 clients do not satisfy this restriction.
    434     // See b/33588773 for details
    435     // return GRALLOC1_ERROR_BAD_VALUE;
    436   }
    437 
    438   // currently we ignore the region/rect client wants to lock
    439   if (region == NULL) {
    440     return GRALLOC1_ERROR_BAD_VALUE;
    441   }
    442   // TODO(user): Need to check if buffer was allocated with the same flags
    443   status = dev->buf_mgr_->LockBuffer(hnd, prod_usage, cons_usage);
    444 
    445   *out_data = reinterpret_cast<void *>(hnd->base);
    446 
    447   return status;
    448 }
    449 
    450 gralloc1_error_t GrallocImpl::LockFlex(gralloc1_device_t *device, buffer_handle_t buffer,
    451                                        gralloc1_producer_usage_t prod_usage,
    452                                        gralloc1_consumer_usage_t cons_usage,
    453                                        const gralloc1_rect_t *region,
    454                                        struct android_flex_layout *out_flex_layout,
    455                                        int32_t acquire_fence) {
    456   void *out_data;
    457   gralloc1_error_t status = GrallocImpl::LockBuffer(device, buffer, prod_usage, cons_usage, region,
    458                                                     &out_data, acquire_fence);
    459   if (status != GRALLOC1_ERROR_NONE) {
    460     return status;
    461   }
    462 
    463   GrallocImpl const *dev = GRALLOC_IMPL(device);
    464   const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    465   dev->buf_mgr_->GetFlexLayout(hnd, out_flex_layout);
    466   return status;
    467 }
    468 
    469 gralloc1_error_t GrallocImpl::UnlockBuffer(gralloc1_device_t *device, buffer_handle_t buffer,
    470                                            int32_t *release_fence) {
    471   gralloc1_error_t status = CheckDeviceAndHandle(device, buffer);
    472 
    473   if (status != GRALLOC1_ERROR_NONE) {
    474     return status;
    475   }
    476 
    477   const private_handle_t *hnd = PRIV_HANDLE_CONST(buffer);
    478   GrallocImpl const *dev = GRALLOC_IMPL(device);
    479 
    480   *release_fence = -1;
    481 
    482   return dev->buf_mgr_->UnlockBuffer(hnd);
    483 }
    484 
    485 gralloc1_error_t GrallocImpl::Gralloc1Perform(gralloc1_device_t *device, int operation, ...) {
    486   va_list args;
    487   va_start(args, operation);
    488   GrallocImpl const *dev = GRALLOC_IMPL(device);
    489   gralloc1_error_t err = dev->buf_mgr_->Perform(operation, args);
    490   va_end(args);
    491 
    492   return err;
    493 }
    494 
    495 }  // namespace gralloc1
    496