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 #include "base/metrics/histogram.h"
10
11 namespace media {
12
13 template <typename T>
14 struct CdmPromiseTraits {};
15
16 template <>
17 struct CdmPromiseTraits<void> {
18 static const CdmPromise::ResolveParameterType kType = CdmPromise::VOID_TYPE;
19 };
20
21 template <>
22 struct CdmPromiseTraits<std::string> {
23 static const CdmPromise::ResolveParameterType kType = CdmPromise::STRING_TYPE;
24 };
25
26 template <>
27 struct CdmPromiseTraits<KeyIdsVector> {
28 static const CdmPromise::ResolveParameterType kType =
29 CdmPromise::KEY_IDS_VECTOR_TYPE;
30 };
31
CdmPromise(ResolveParameterType parameter_type)32 CdmPromise::CdmPromise(ResolveParameterType parameter_type)
33 : parameter_type_(parameter_type), is_pending_(true) {
34 }
35
CdmPromise(ResolveParameterType parameter_type,PromiseRejectedCB reject_cb)36 CdmPromise::CdmPromise(ResolveParameterType parameter_type,
37 PromiseRejectedCB reject_cb)
38 : parameter_type_(parameter_type),
39 reject_cb_(reject_cb),
40 is_pending_(true) {
41 DCHECK(!reject_cb_.is_null());
42 }
43
CdmPromise(ResolveParameterType parameter_type,PromiseRejectedCB reject_cb,const std::string & uma_name)44 CdmPromise::CdmPromise(ResolveParameterType parameter_type,
45 PromiseRejectedCB reject_cb,
46 const std::string& uma_name)
47 : parameter_type_(parameter_type),
48 reject_cb_(reject_cb),
49 is_pending_(true),
50 uma_name_(uma_name) {
51 DCHECK(!reject_cb_.is_null());
52 DCHECK(!uma_name_.empty());
53 }
54
~CdmPromise()55 CdmPromise::~CdmPromise() {
56 DCHECK(!is_pending_);
57 }
58
ConvertExceptionToUMAResult(MediaKeys::Exception exception_code)59 static CdmPromise::ResultCodeForUMA ConvertExceptionToUMAResult(
60 MediaKeys::Exception exception_code) {
61 switch (exception_code) {
62 case MediaKeys::NOT_SUPPORTED_ERROR:
63 return CdmPromise::NOT_SUPPORTED_ERROR;
64 case MediaKeys::INVALID_STATE_ERROR:
65 return CdmPromise::INVALID_STATE_ERROR;
66 case MediaKeys::INVALID_ACCESS_ERROR:
67 return CdmPromise::INVALID_ACCESS_ERROR;
68 case MediaKeys::QUOTA_EXCEEDED_ERROR:
69 return CdmPromise::QUOTA_EXCEEDED_ERROR;
70 case MediaKeys::UNKNOWN_ERROR:
71 return CdmPromise::UNKNOWN_ERROR;
72 case MediaKeys::CLIENT_ERROR:
73 return CdmPromise::CLIENT_ERROR;
74 case MediaKeys::OUTPUT_ERROR:
75 return CdmPromise::OUTPUT_ERROR;
76 }
77 NOTREACHED();
78 return CdmPromise::UNKNOWN_ERROR;
79 }
80
reject(MediaKeys::Exception exception_code,uint32 system_code,const std::string & error_message)81 void CdmPromise::reject(MediaKeys::Exception exception_code,
82 uint32 system_code,
83 const std::string& error_message) {
84 ReportResultToUMA(ConvertExceptionToUMAResult(exception_code));
85 reject_cb_.Run(exception_code, system_code, error_message);
86 }
87
ReportResultToUMA(ResultCodeForUMA result)88 void CdmPromise::ReportResultToUMA(ResultCodeForUMA result) {
89 DCHECK(is_pending_);
90 is_pending_ = false;
91 if (!uma_name_.empty()) {
92 base::LinearHistogram::FactoryGet(
93 uma_name_,
94 1,
95 NUM_RESULT_CODES,
96 NUM_RESULT_CODES + 1,
97 base::HistogramBase::kUmaTargetedHistogramFlag)->Add(result);
98 }
99 }
100
101 template <typename T>
CdmPromiseTemplate(base::Callback<void (const T &)> resolve_cb,PromiseRejectedCB reject_cb)102 CdmPromiseTemplate<T>::CdmPromiseTemplate(
103 base::Callback<void(const T&)> resolve_cb,
104 PromiseRejectedCB reject_cb)
105 : CdmPromise(CdmPromiseTraits<T>::kType, reject_cb),
106 resolve_cb_(resolve_cb) {
107 DCHECK(!resolve_cb_.is_null());
108 }
109
110 template <typename T>
CdmPromiseTemplate(base::Callback<void (const T &)> resolve_cb,PromiseRejectedCB reject_cb,const std::string & uma_name)111 CdmPromiseTemplate<T>::CdmPromiseTemplate(
112 base::Callback<void(const T&)> resolve_cb,
113 PromiseRejectedCB reject_cb,
114 const std::string& uma_name)
115 : CdmPromise(CdmPromiseTraits<T>::kType, reject_cb, uma_name),
116 resolve_cb_(resolve_cb) {
117 DCHECK(!resolve_cb_.is_null());
118 }
119
120 template <typename T>
CdmPromiseTemplate()121 CdmPromiseTemplate<T>::CdmPromiseTemplate()
122 : CdmPromise(CdmPromiseTraits<T>::kType) {
123 }
124
125 template <typename T>
resolve(const T & result)126 void CdmPromiseTemplate<T>::resolve(const T& result) {
127 ReportResultToUMA(SUCCESS);
128 resolve_cb_.Run(result);
129 }
130
CdmPromiseTemplate(base::Callback<void ()> resolve_cb,PromiseRejectedCB reject_cb)131 CdmPromiseTemplate<void>::CdmPromiseTemplate(base::Callback<void()> resolve_cb,
132 PromiseRejectedCB reject_cb)
133 : CdmPromise(CdmPromiseTraits<void>::kType, reject_cb),
134 resolve_cb_(resolve_cb) {
135 DCHECK(!resolve_cb_.is_null());
136 }
137
CdmPromiseTemplate(base::Callback<void ()> resolve_cb,PromiseRejectedCB reject_cb,const std::string & uma_name)138 CdmPromiseTemplate<void>::CdmPromiseTemplate(base::Callback<void()> resolve_cb,
139 PromiseRejectedCB reject_cb,
140 const std::string& uma_name)
141 : CdmPromise(CdmPromiseTraits<void>::kType, reject_cb, uma_name),
142 resolve_cb_(resolve_cb) {
143 DCHECK(!resolve_cb_.is_null());
144 DCHECK(!uma_name_.empty());
145 }
146
CdmPromiseTemplate()147 CdmPromiseTemplate<void>::CdmPromiseTemplate()
148 : CdmPromise(CdmPromiseTraits<void>::kType) {
149 }
150
resolve()151 void CdmPromiseTemplate<void>::resolve() {
152 ReportResultToUMA(SUCCESS);
153 resolve_cb_.Run();
154 }
155
156 // Explicit template instantiation for the Promises needed.
157 template class MEDIA_EXPORT CdmPromiseTemplate<std::string>;
158 template class MEDIA_EXPORT CdmPromiseTemplate<KeyIdsVector>;
159
160 } // namespace media
161