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// 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/base/cdm_promise.h"
#include "base/bind.h"
#include "base/logging.h"
#include "base/metrics/histogram.h"
namespace media {
template <typename T>
struct CdmPromiseTraits {};
template <>
struct CdmPromiseTraits<void> {
static const CdmPromise::ResolveParameterType kType = CdmPromise::VOID_TYPE;
};
template <>
struct CdmPromiseTraits<std::string> {
static const CdmPromise::ResolveParameterType kType = CdmPromise::STRING_TYPE;
};
template <>
struct CdmPromiseTraits<KeyIdsVector> {
static const CdmPromise::ResolveParameterType kType =
CdmPromise::KEY_IDS_VECTOR_TYPE;
};
CdmPromise::CdmPromise(ResolveParameterType parameter_type)
: parameter_type_(parameter_type), is_pending_(true) {
}
CdmPromise::CdmPromise(ResolveParameterType parameter_type,
PromiseRejectedCB reject_cb)
: parameter_type_(parameter_type),
reject_cb_(reject_cb),
is_pending_(true) {
DCHECK(!reject_cb_.is_null());
}
CdmPromise::CdmPromise(ResolveParameterType parameter_type,
PromiseRejectedCB reject_cb,
const std::string& uma_name)
: parameter_type_(parameter_type),
reject_cb_(reject_cb),
is_pending_(true),
uma_name_(uma_name) {
DCHECK(!reject_cb_.is_null());
DCHECK(!uma_name_.empty());
}
CdmPromise::~CdmPromise() {
DCHECK(!is_pending_);
}
static CdmPromise::ResultCodeForUMA ConvertExceptionToUMAResult(
MediaKeys::Exception exception_code) {
switch (exception_code) {
case MediaKeys::NOT_SUPPORTED_ERROR:
return CdmPromise::NOT_SUPPORTED_ERROR;
case MediaKeys::INVALID_STATE_ERROR:
return CdmPromise::INVALID_STATE_ERROR;
case MediaKeys::INVALID_ACCESS_ERROR:
return CdmPromise::INVALID_ACCESS_ERROR;
case MediaKeys::QUOTA_EXCEEDED_ERROR:
return CdmPromise::QUOTA_EXCEEDED_ERROR;
case MediaKeys::UNKNOWN_ERROR:
return CdmPromise::UNKNOWN_ERROR;
case MediaKeys::CLIENT_ERROR:
return CdmPromise::CLIENT_ERROR;
case MediaKeys::OUTPUT_ERROR:
return CdmPromise::OUTPUT_ERROR;
}
NOTREACHED();
return CdmPromise::UNKNOWN_ERROR;
}
void CdmPromise::reject(MediaKeys::Exception exception_code,
uint32 system_code,
const std::string& error_message) {
ReportResultToUMA(ConvertExceptionToUMAResult(exception_code));
reject_cb_.Run(exception_code, system_code, error_message);
}
void CdmPromise::ReportResultToUMA(ResultCodeForUMA result) {
DCHECK(is_pending_);
is_pending_ = false;
if (!uma_name_.empty()) {
base::LinearHistogram::FactoryGet(
uma_name_,
1,
NUM_RESULT_CODES,
NUM_RESULT_CODES + 1,
base::HistogramBase::kUmaTargetedHistogramFlag)->Add(result);
}
}
template <typename T>
CdmPromiseTemplate<T>::CdmPromiseTemplate(
base::Callback<void(const T&)> resolve_cb,
PromiseRejectedCB reject_cb)
: CdmPromise(CdmPromiseTraits<T>::kType, reject_cb),
resolve_cb_(resolve_cb) {
DCHECK(!resolve_cb_.is_null());
}
template <typename T>
CdmPromiseTemplate<T>::CdmPromiseTemplate(
base::Callback<void(const T&)> resolve_cb,
PromiseRejectedCB reject_cb,
const std::string& uma_name)
: CdmPromise(CdmPromiseTraits<T>::kType, reject_cb, uma_name),
resolve_cb_(resolve_cb) {
DCHECK(!resolve_cb_.is_null());
}
template <typename T>
CdmPromiseTemplate<T>::CdmPromiseTemplate()
: CdmPromise(CdmPromiseTraits<T>::kType) {
}
template <typename T>
void CdmPromiseTemplate<T>::resolve(const T& result) {
ReportResultToUMA(SUCCESS);
resolve_cb_.Run(result);
}
CdmPromiseTemplate<void>::CdmPromiseTemplate(base::Callback<void()> resolve_cb,
PromiseRejectedCB reject_cb)
: CdmPromise(CdmPromiseTraits<void>::kType, reject_cb),
resolve_cb_(resolve_cb) {
DCHECK(!resolve_cb_.is_null());
}
CdmPromiseTemplate<void>::CdmPromiseTemplate(base::Callback<void()> resolve_cb,
PromiseRejectedCB reject_cb,
const std::string& uma_name)
: CdmPromise(CdmPromiseTraits<void>::kType, reject_cb, uma_name),
resolve_cb_(resolve_cb) {
DCHECK(!resolve_cb_.is_null());
DCHECK(!uma_name_.empty());
}
CdmPromiseTemplate<void>::CdmPromiseTemplate()
: CdmPromise(CdmPromiseTraits<void>::kType) {
}
void CdmPromiseTemplate<void>::resolve() {
ReportResultToUMA(SUCCESS);
resolve_cb_.Run();
}
// Explicit template instantiation for the Promises needed.
template class MEDIA_EXPORT CdmPromiseTemplate<std::string>;
template class MEDIA_EXPORT CdmPromiseTemplate<KeyIdsVector>;
} // namespace media
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