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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.
#ifndef MEDIA_BLINK_CDM_RESULT_PROMISE_H_
#define MEDIA_BLINK_CDM_RESULT_PROMISE_H_
#include "base/basictypes.h"
#include "media/base/cdm_promise.h"
#include "media/base/media_keys.h"
#include "media/blink/cdm_result_promise_helper.h"
#include "third_party/WebKit/public/platform/WebContentDecryptionModuleResult.h"
#include "third_party/WebKit/public/platform/WebString.h"
namespace media {
// Used to convert a WebContentDecryptionModuleResult into a CdmPromiseTemplate
// so that it can be passed through Chromium. When resolve(T) is called, the
// appropriate complete...() method on WebContentDecryptionModuleResult will be
// invoked. If reject() is called instead,
// WebContentDecryptionModuleResult::completeWithError() is called.
// If constructed with a |uma_name|, CdmResultPromise will report the promise
// result (success or rejection code) to UMA.
template <typename... T>
class CdmResultPromise : public media::CdmPromiseTemplate<T...> {
public:
CdmResultPromise(const blink::WebContentDecryptionModuleResult& result,
const std::string& uma_name);
virtual ~CdmResultPromise();
// CdmPromiseTemplate<T> implementation.
virtual void resolve(const T&... result) override;
virtual void reject(media::MediaKeys::Exception exception_code,
uint32 system_code,
const std::string& error_message) override;
private:
using media::CdmPromiseTemplate<T...>::MarkPromiseSettled;
blink::WebContentDecryptionModuleResult web_cdm_result_;
// UMA name to report result to.
std::string uma_name_;
DISALLOW_COPY_AND_ASSIGN(CdmResultPromise);
};
template <typename... T>
CdmResultPromise<T...>::CdmResultPromise(
const blink::WebContentDecryptionModuleResult& result,
const std::string& uma_name)
: web_cdm_result_(result), uma_name_(uma_name) {
}
template <typename... T>
CdmResultPromise<T...>::~CdmResultPromise() {
}
// "inline" is needed to prevent multiple definition error.
template <>
inline void CdmResultPromise<>::resolve() {
MarkPromiseSettled();
ReportCdmResultUMA(uma_name_, SUCCESS);
web_cdm_result_.complete();
}
template <>
inline void CdmResultPromise<media::KeyIdsVector>::resolve(
const media::KeyIdsVector& result) {
// TODO(jrummell): Update blink::WebContentDecryptionModuleResult to
// handle the set of keys.
reject(media::MediaKeys::NOT_SUPPORTED_ERROR, 0, "Not implemented.");
}
template <typename... T>
void CdmResultPromise<T...>::reject(media::MediaKeys::Exception exception_code,
uint32 system_code,
const std::string& error_message) {
MarkPromiseSettled();
ReportCdmResultUMA(uma_name_,
ConvertCdmExceptionToResultForUMA(exception_code));
web_cdm_result_.completeWithError(ConvertCdmException(exception_code),
system_code,
blink::WebString::fromUTF8(error_message));
}
} // namespace media
#endif // MEDIA_BLINK_CDM_RESULT_PROMISE_H_