Add Mojo CDM Service.

media/mojo/services/mojo_cdm_promise.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "media/mojo/services/mojo_cdm_promise.h"
+
+#include "base/bind.h"
+#include "base/logging.h"
+#include "media/base/decryptor.h"
+
+namespace media {
+
+static mojo::CdmPromiseResultPtr GetRejectResult(
+    MediaKeys::Exception exception_code,
+    uint32 system_code,
+    const std::string& error_message) {
+  mojo::CdmPromiseResultPtr cdm_promise_result(mojo::CdmPromiseResult::New());
+  cdm_promise_result->success = false;
+  cdm_promise_result->exception_code =
+      static_cast<mojo::CdmException>(exception_code);
+  cdm_promise_result->system_code = system_code;
+  cdm_promise_result->error_message = error_message;
+  return cdm_promise_result.Pass();
+}
+
+SimpleMojoCdmPromise::SimpleMojoCdmPromise(
+    const mojo::Callback<void(mojo::CdmPromiseResultPtr)>& callback)
+    : callback_(callback) {
+  DCHECK(!callback_.is_null());
+}
+
+SimpleMojoCdmPromise::~SimpleMojoCdmPromise() {
+  if (!callback_.is_null())
+    DVLOG(1) << "Promise not resolved before destruction.";
+}
+
+void SimpleMojoCdmPromise::resolve() {
+  mojo::CdmPromiseResultPtr cdm_promise_result(mojo::CdmPromiseResult::New());
+  cdm_promise_result->success = true;
+  callback_.Run(cdm_promise_result.Pass());
+  callback_.reset();
+}
+
+void SimpleMojoCdmPromise::reject(MediaKeys::Exception exception_code,
+                                  uint32 system_code,
+                                  const std::string& error_message) {
+  callback_.Run(GetRejectResult(exception_code, system_code, error_message));
+  callback_.reset();
+}
+
+template <typename Type, typename MojoType>
+MojoCdmPromise<Type, MojoType>::MojoCdmPromise(
+    const mojo::Callback<void(mojo::CdmPromiseResultPtr, MojoType)>& callback)
+    : callback_(callback) {
+  DCHECK(!callback_.is_null());
+}
+
+template <typename Type, typename MojoType>
+MojoCdmPromise<Type, MojoType>::~MojoCdmPromise() {
+  if (!callback_.is_null())
+    DVLOG(1) << "Promise not resolved before destruction.";
+}
+
+template <typename Type, typename MojoType>
+void MojoCdmPromise<Type, MojoType>::resolve(const Type& arg) {
+  mojo::CdmPromiseResultPtr cdm_promise_result(mojo::CdmPromiseResult::New());
+  cdm_promise_result->success = true;
+  callback_.Run(cdm_promise_result.Pass(), MojoType::From(arg));
+  callback_.reset();
+}
+
+template <typename Type, typename MojoType>
+void MojoCdmPromise<Type, MojoType>::reject(MediaKeys::Exception exception_code,
+                                            uint32 system_code,
+                                            const std::string& error_message) {
+  callback_.Run(GetRejectResult(exception_code, system_code, error_message),
+                MojoType());
+  callback_.reset();
+}
+
+template class MojoCdmPromise<std::string, mojo::String>;
+template class MojoCdmPromise<std::vector<std::vector<uint8_t>>,
+                              mojo::Array<mojo::Array<uint8_t>>>;
+
+}  // namespace media