src/ppapi/thunk/ppb_buffer_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/dev/ppb_buffer_dev.h"
   6 #include "ppapi/thunk/thunk.h"
   7 #include "ppapi/thunk/enter.h"
   8 #include "ppapi/thunk/ppb_buffer_api.h"
   9 #include "ppapi/thunk/resource_creation_api.h"
  10
  11 namespace ppapi {
  12 namespace thunk {
  13
  14 namespace {
  15
  16 PP_Resource Create(PP_Instance instance, uint32_t size) {
  17   EnterResourceCreation enter(instance);
  18   if (enter.failed())
  19     return 0;
  20   return enter.functions()->CreateBuffer(instance, size);
  21 }
  22
  23 PP_Bool IsBuffer(PP_Resource resource) {
  24   EnterResource<PPB_Buffer_API> enter(resource, false);
  25   return PP_FromBool(enter.succeeded());
  26 }
  27
  28 PP_Bool Describe(PP_Resource resource, uint32_t* size_in_bytes) {
  29   EnterResource<PPB_Buffer_API> enter(resource, true);
  30   if (enter.failed()) {
  31     *size_in_bytes = 0;
  32     return PP_FALSE;
  33   }
  34   return enter.object()->Describe(size_in_bytes);
  35 }
  36
  37 void* Map(PP_Resource resource) {
  38   EnterResource<PPB_Buffer_API> enter(resource, true);
  39   if (enter.failed())
  40     return NULL;
  41   return enter.object()->Map();
  42 }
  43
  44 void Unmap(PP_Resource resource) {
  45   EnterResource<PPB_Buffer_API> enter(resource, true);
  46   if (enter.succeeded())
  47     enter.object()->Unmap();
  48 }
  49
  50 const PPB_Buffer_Dev g_ppb_buffer_thunk = {
  51   &Create,
  52   &IsBuffer,
  53   &Describe,
  54   &Map,
  55   &Unmap,
  56 };
  57
  58 }  // namespace
  59
  60 const PPB_Buffer_Dev_0_4* GetPPB_Buffer_Dev_0_4_Thunk() {
  61   return &g_ppb_buffer_thunk;
  62 }
  63
  64 }  // namespace thunk
  65 }  // namespace ppapi