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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "ppapi/cpp/dev/resource_array_dev.h"
      6 
      7 #include "ppapi/c/dev/ppb_resource_array_dev.h"
      8 #include "ppapi/c/pp_errors.h"
      9 #include "ppapi/cpp/instance_handle.h"
     10 #include "ppapi/cpp/logging.h"
     11 #include "ppapi/cpp/module.h"
     12 #include "ppapi/cpp/module_impl.h"
     13 
     14 namespace pp {
     15 
     16 namespace {
     17 
     18 template <> const char* interface_name<PPB_ResourceArray_Dev>() {
     19   return PPB_RESOURCEARRAY_DEV_INTERFACE;
     20 }
     21 
     22 }  // namespace
     23 
     24 ResourceArray_Dev::ResourceArray_Dev() {
     25 }
     26 
     27 ResourceArray_Dev::ResourceArray_Dev(PassRef, PP_Resource resource)
     28     : Resource(PASS_REF, resource) {
     29 }
     30 
     31 ResourceArray_Dev::ResourceArray_Dev(const ResourceArray_Dev& other)
     32     : Resource(other) {
     33 }
     34 
     35 ResourceArray_Dev::ResourceArray_Dev(const InstanceHandle& instance,
     36                                      const PP_Resource elements[],
     37                                      uint32_t size) {
     38   if (has_interface<PPB_ResourceArray_Dev>()) {
     39     PassRefFromConstructor(get_interface<PPB_ResourceArray_Dev>()->Create(
     40         instance.pp_instance(), elements, size));
     41   }
     42 }
     43 
     44 ResourceArray_Dev::~ResourceArray_Dev() {
     45 }
     46 
     47 ResourceArray_Dev& ResourceArray_Dev::operator=(
     48     const ResourceArray_Dev& other) {
     49   Resource::operator=(other);
     50   return *this;
     51 }
     52 
     53 uint32_t ResourceArray_Dev::size() const {
     54   if (!has_interface<PPB_ResourceArray_Dev>())
     55     return 0;
     56   return get_interface<PPB_ResourceArray_Dev>()->GetSize(pp_resource());
     57 }
     58 
     59 PP_Resource ResourceArray_Dev::operator[](uint32_t index) const {
     60   if (!has_interface<PPB_ResourceArray_Dev>())
     61     return 0;
     62   return get_interface<PPB_ResourceArray_Dev>()->GetAt(pp_resource(), index);
     63 }
     64 
     65 // static
     66 void ResourceArray_Dev::ArrayOutputCallbackConverter(void* user_data,
     67                                                      int32_t result) {
     68   ArrayOutputCallbackData* data =
     69       static_cast<ArrayOutputCallbackData*>(user_data);
     70 
     71   // data->resource_array_output should remain 0 if the call failed.
     72   ResourceArray_Dev resources(PASS_REF, data->resource_array_output);
     73   PP_DCHECK(resources.is_null() || result == PP_OK);
     74 
     75   // Need to issue the "GetDataBuffer" even for error cases and when the number
     76   // of items is 0.
     77   PP_Resource* output_buf = static_cast<PP_Resource*>(
     78       data->output.GetDataBuffer(
     79           data->output.user_data, resources.is_null() ? 0 : resources.size(),
     80           sizeof(PP_Resource)));
     81   if (output_buf) {
     82     for (uint32_t index = 0; index < resources.size(); ++index) {
     83       output_buf[index] = resources[index];
     84       Module::Get()->core()->AddRefResource(output_buf[index]);
     85     }
     86   }
     87 
     88   PP_RunCompletionCallback(&data->original_callback, result);
     89   delete data;
     90 }
     91 
     92 }  // namespace pp
     93