• Home
  • History
  • Annotate
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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