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