media/mojo/services/mojo_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/mojo/services/mojo_cdm_promise.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/bind.h"
  11 #include "base/logging.h"
  12 #include "media/base/decryptor.h"
  13 #include "media/base/media_keys.h"
  14
  15 namespace media {
  16
  17 static mojo::CdmPromiseResultPtr GetRejectResult(
  18     MediaKeys::Exception exception,
  19     uint32_t system_code,
  20     const std::string& error_message) {
  21   mojo::CdmPromiseResultPtr cdm_promise_result(mojo::CdmPromiseResult::New());
  22   cdm_promise_result->success = false;
  23   cdm_promise_result->exception = static_cast<mojo::CdmException>(exception);
  24   cdm_promise_result->system_code = system_code;
  25   cdm_promise_result->error_message = error_message;
  26   return cdm_promise_result.Pass();
  27 }
  28
  29 template <typename... T>
  30 MojoCdmPromise<T...>::MojoCdmPromise(const CallbackType& callback)
  31     : callback_(callback) {
  32   DCHECK(!callback_.is_null());
  33 }
  34
  35 template <typename... T>
  36 MojoCdmPromise<T...>::~MojoCdmPromise() {
  37   if (!callback_.is_null())
  38     DVLOG(1) << "Promise not resolved before destruction.";
  39 }
  40
  41 template <typename... T>
  42 void MojoCdmPromise<T...>::resolve(const T&... result) {
  43   MarkPromiseSettled();
  44   mojo::CdmPromiseResultPtr cdm_promise_result(mojo::CdmPromiseResult::New());
  45   cdm_promise_result->success = true;
  46   callback_.Run(cdm_promise_result.Pass(),
  47                 MojoTypeTrait<T>::MojoType::From(result)...);
  48   callback_.reset();
  49 }
  50
  51 template <typename... T>
  52 void MojoCdmPromise<T...>::reject(MediaKeys::Exception exception,
  53                                   uint32_t system_code,
  54                                   const std::string& error_message) {
  55   MarkPromiseSettled();
  56   callback_.Run(GetRejectResult(exception, system_code, error_message),
  57                 MojoTypeTrait<T>::DefaultValue()...);
  58   callback_.reset();
  59 }
  60
  61 template class MojoCdmPromise<>;
  62 template class MojoCdmPromise<std::string>;
  63
  64 }  // namespace media