ppapi/thunk/ppb_image_data_thunk.cc

   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/c/pp_errors.h"
   6 #include "ppapi/c/ppb_image_data.h"
   7 #include "ppapi/shared_impl/ppb_image_data_shared.h"
   8 #include "ppapi/thunk/enter.h"
   9 #include "ppapi/thunk/ppb_image_data_api.h"
  10 #include "ppapi/thunk/resource_creation_api.h"
  11 #include "ppapi/thunk/thunk.h"
  12
  13 namespace ppapi {
  14 namespace thunk {
  15
  16 namespace {
  17
  18 PP_ImageDataFormat GetNativeImageDataFormat() {
  19   return ppapi::PPB_ImageData_Shared::GetNativeImageDataFormat();
  20 }
  21
  22 PP_Bool IsImageDataFormatSupported(PP_ImageDataFormat format) {
  23   return ppapi::PPB_ImageData_Shared::IsImageDataFormatSupported(format)
  24       ? PP_TRUE : PP_FALSE;
  25 }
  26
  27 PP_Resource Create(PP_Instance instance,
  28                    PP_ImageDataFormat format,
  29                    const PP_Size* size,
  30                    PP_Bool init_to_zero) {
  31   EnterResourceCreation enter(instance);
  32   if (enter.failed())
  33     return 0;
  34   return enter.functions()->CreateImageData(instance, format,
  35                                             *size, init_to_zero);
  36 }
  37
  38 PP_Bool IsImageData(PP_Resource resource) {
  39   EnterResource<PPB_ImageData_API> enter(resource, false);
  40   return enter.succeeded() ? PP_TRUE : PP_FALSE;
  41 }
  42
  43 PP_Bool Describe(PP_Resource resource, PP_ImageDataDesc* desc) {
  44   // Give predictable values on failure.
  45   memset(desc, 0, sizeof(PP_ImageDataDesc));
  46
  47   EnterResource<PPB_ImageData_API> enter(resource, true);
  48   if (enter.failed())
  49     return PP_FALSE;
  50   return enter.object()->Describe(desc);
  51 }
  52
  53 void* Map(PP_Resource resource) {
  54   EnterResource<PPB_ImageData_API> enter(resource, true);
  55   if (enter.failed())
  56     return NULL;
  57   return enter.object()->Map();
  58 }
  59
  60 void Unmap(PP_Resource resource) {
  61   EnterResource<PPB_ImageData_API> enter(resource, true);
  62   if (enter.failed())
  63     return;
  64   enter.object()->Unmap();
  65 }
  66
  67 const PPB_ImageData g_ppb_image_data_thunk = {
  68   &GetNativeImageDataFormat,
  69   &IsImageDataFormatSupported,
  70   &Create,
  71   &IsImageData,
  72   &Describe,
  73   &Map,
  74   &Unmap,
  75 };
  76
  77 }  // namespace
  78
  79 const PPB_ImageData_1_0* GetPPB_ImageData_1_0_Thunk() {
  80   return &g_ppb_image_data_thunk;
  81 }
  82
  83 }  // namespace thunk
  84 }  // namespace ppapi