media/base/cdm_promise.cc

   1 // Copyright 2014 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 "media/base/cdm_promise.h"
   6
   7 #include "base/bind.h"
   8 #include "base/logging.h"
   9
  10 namespace media {
  11
  12 CdmPromise::CdmPromise() : is_pending_(true) {
  13 }
  14
  15 CdmPromise::CdmPromise(PromiseRejectedCB reject_cb)
  16     : reject_cb_(reject_cb), is_pending_(true) {
  17   DCHECK(!reject_cb_.is_null());
  18 }
  19
  20 CdmPromise::~CdmPromise() {
  21   DCHECK(!is_pending_);
  22 }
  23
  24 void CdmPromise::reject(MediaKeys::Exception exception_code,
  25                         uint32 system_code,
  26                         const std::string& error_message) {
  27   DCHECK(is_pending_);
  28   is_pending_ = false;
  29   reject_cb_.Run(exception_code, system_code, error_message);
  30 }
  31
  32 template <typename T>
  33 CdmPromiseTemplate<T>::CdmPromiseTemplate(
  34     base::Callback<void(const T&)> resolve_cb,
  35     PromiseRejectedCB reject_cb)
  36     : CdmPromise(reject_cb), resolve_cb_(resolve_cb) {
  37   DCHECK(!resolve_cb_.is_null());
  38 }
  39
  40 template <typename T>
  41 CdmPromiseTemplate<T>::~CdmPromiseTemplate() {
  42   DCHECK(!is_pending_);
  43 }
  44
  45 template <typename T>
  46 void CdmPromiseTemplate<T>::resolve(const T& result) {
  47   DCHECK(is_pending_);
  48   is_pending_ = false;
  49   resolve_cb_.Run(result);
  50 }
  51
  52 CdmPromiseTemplate<void>::CdmPromiseTemplate(base::Callback<void()> resolve_cb,
  53                                              PromiseRejectedCB reject_cb)
  54     : CdmPromise(reject_cb), resolve_cb_(resolve_cb) {
  55   DCHECK(!resolve_cb_.is_null());
  56 }
  57
  58 CdmPromiseTemplate<void>::CdmPromiseTemplate() {
  59 }
  60
  61 CdmPromiseTemplate<void>::~CdmPromiseTemplate() {
  62   DCHECK(!is_pending_);
  63 }
  64
  65 void CdmPromiseTemplate<void>::resolve() {
  66   DCHECK(is_pending_);
  67   is_pending_ = false;
  68   resolve_cb_.Run();
  69 }
  70
  71 // Explicit template instantiation for the Promises needed.
  72 template class MEDIA_EXPORT CdmPromiseTemplate<std::string>;
  73
  74 }  // namespace media