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 interfaces::CdmPromiseResultPtr GetRejectResult(
  18     MediaKeys::Exception exception,
  19     uint32_t system_code,
  20     const std::string& error_message) {
  21   interfaces::CdmPromiseResultPtr cdm_promise_result(
  22       interfaces::CdmPromiseResult::New());
  23   cdm_promise_result->success = false;
  24   cdm_promise_result->exception =
  25       static_cast<interfaces::CdmException>(exception);
  26   cdm_promise_result->system_code = system_code;
  27   cdm_promise_result->error_message = error_message;
  28   return cdm_promise_result.Pass();
  29 }
  30
  31 template <typename... T>
  32 MojoCdmPromise<T...>::MojoCdmPromise(const CallbackType& callback)
  33     : callback_(callback) {
  34   DCHECK(!callback_.is_null());
  35 }
  36
  37 template <typename... T>
  38 MojoCdmPromise<T...>::~MojoCdmPromise() {
  39   if (!callback_.is_null())
  40     DVLOG(1) << "Promise not resolved before destruction.";
  41 }
  42
  43 template <typename... T>
  44 void MojoCdmPromise<T...>::resolve(const T&... result) {
  45   MarkPromiseSettled();
  46   interfaces::CdmPromiseResultPtr cdm_promise_result(
  47       interfaces::CdmPromiseResult::New());
  48   cdm_promise_result->success = true;
  49   callback_.Run(cdm_promise_result.Pass(),
  50                 MojoTypeTrait<T>::MojoType::From(result)...);
  51   callback_.reset();
  52 }
  53
  54 template <typename... T>
  55 void MojoCdmPromise<T...>::reject(MediaKeys::Exception exception,
  56                                   uint32_t system_code,
  57                                   const std::string& error_message) {
  58   MarkPromiseSettled();
  59   callback_.Run(GetRejectResult(exception, system_code, error_message),
  60                 MojoTypeTrait<T>::DefaultValue()...);
  61   callback_.reset();
  62 }
  63
  64 template class MojoCdmPromise<>;
  65 template class MojoCdmPromise<std::string>;
  66
  67 }  // namespace media