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 #ifndef PPAPI_CPP_DEV_RESOURCE_ARRAY_DEV_H_ 6 #define PPAPI_CPP_DEV_RESOURCE_ARRAY_DEV_H_ 7 8 #include "ppapi/c/pp_array_output.h" 9 #include "ppapi/c/pp_completion_callback.h" 10 #include "ppapi/c/pp_stdint.h" 11 #include "ppapi/cpp/resource.h" 12 13 namespace pp { 14 15 class InstanceHandle; 16 17 class ResourceArray_Dev : public Resource { 18 public: 19 // Heap-allocated data passed to ArrayOutputCallbackConverter(). Please see 20 // the comment of ArrayOutputCallbackConverter() for more details. 21 struct ArrayOutputCallbackData { 22 ArrayOutputCallbackData(const PP_ArrayOutput& array_output, 23 const PP_CompletionCallback& callback) 24 : resource_array_output(0), 25 output(array_output), 26 original_callback(callback) { 27 } 28 29 PP_Resource resource_array_output; 30 PP_ArrayOutput output; 31 PP_CompletionCallback original_callback; 32 }; 33 34 ResourceArray_Dev(); 35 36 ResourceArray_Dev(PassRef, PP_Resource resource); 37 38 ResourceArray_Dev(const ResourceArray_Dev& other); 39 40 ResourceArray_Dev(const InstanceHandle& instance, 41 const PP_Resource elements[], 42 uint32_t size); 43 44 virtual ~ResourceArray_Dev(); 45 46 ResourceArray_Dev& operator=(const ResourceArray_Dev& other); 47 48 uint32_t size() const; 49 50 PP_Resource operator[](uint32_t index) const; 51 52 // This is an adapter for backward compatibility. It works with those APIs 53 // which take a PPB_ResourceArray_Dev resource as output parameter, and 54 // returns results using PP_ArrayOutput. For example: 55 // 56 // ResourceArray_Dev::ArrayOutputCallbackData* data = 57 // new ResourceArray_Dev::ArrayOutputCallbackData( 58 // pp_array_output, callback); 59 // ppb_foo->Bar( 60 // foo_resource, &data->resource_array_output, 61 // PP_MakeCompletionCallback( 62 // &ResourceArray_Dev::ArrayOutputCallbackConverter, data)); 63 // 64 // It takes a heap-allocated ArrayOutputCallbackData struct passed as the user 65 // data, and deletes it when the call completes. 66 static void ArrayOutputCallbackConverter(void* user_data, int32_t result); 67 }; 68 69 } // namespace pp 70 71 #endif // PPAPI_CPP_DEV_RESOURCE_ARRAY_DEV_H_ 72
