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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 "components/cdm/renderer/widevine_key_systems.h"
#include <string>
#include <vector>
#include "base/logging.h"
#include "components/cdm/common/cdm_messages_android.h"
#include "content/public/renderer/key_system_info.h"
#include "content/public/renderer/render_thread.h"
#include "widevine_cdm_version.h" // In SHARED_INTERMEDIATE_DIR.
#if defined(WIDEVINE_CDM_AVAILABLE)
using content::KeySystemInfo;
using content::SupportedCodecs;
namespace cdm {
// Return |name|'s parent key system.
static std::string GetDirectParentName(std::string name) {
size_t last_period = name.find_last_of('.');
DCHECK_GT(last_period, 0u);
return name.substr(0u, last_period);
}
void AddWidevineWithCodecs(WidevineCdmType widevine_cdm_type,
SupportedCodecs supported_codecs,
std::vector<KeySystemInfo>* concrete_key_systems) {
KeySystemInfo info(kWidevineKeySystem);
switch (widevine_cdm_type) {
case WIDEVINE:
// For standard Widevine, add parent name.
info.parent_key_system = GetDirectParentName(kWidevineKeySystem);
break;
#if defined(OS_ANDROID)
case WIDEVINE_HR_NON_COMPOSITING:
info.key_system.append(".hrnoncompositing");
break;
#endif // defined(OS_ANDROID)
default:
NOTREACHED();
}
// TODO(xhwang): A container or an initDataType may be supported even though
// there are no codecs supported in that container. Fix this when we support
// initDataType.
info.supported_codecs = supported_codecs;
#if defined(ENABLE_PEPPER_CDMS)
info.pepper_type = kWidevineCdmPluginMimeType;
#endif // defined(ENABLE_PEPPER_CDMS)
concrete_key_systems->push_back(info);
}
#if defined(OS_ANDROID)
void AddAndroidWidevine(std::vector<KeySystemInfo>* concrete_key_systems) {
SupportedKeySystemRequest request;
SupportedKeySystemResponse response;
request.key_system = kWidevineKeySystem;
request.codecs = content::EME_CODEC_WEBM_ALL | content::EME_CODEC_MP4_ALL;
content::RenderThread::Get()->Send(
new ChromeViewHostMsg_GetSupportedKeySystems(request, &response));
DCHECK(response.compositing_codecs & content::EME_CODEC_ALL)
<< "unrecognized codec";
DCHECK(response.non_compositing_codecs & content::EME_CODEC_ALL)
<< "unrecognized codec";
if (response.compositing_codecs != content::EME_CODEC_NONE) {
AddWidevineWithCodecs(
WIDEVINE,
static_cast<SupportedCodecs>(response.compositing_codecs),
concrete_key_systems);
}
if (response.non_compositing_codecs != content::EME_CODEC_NONE) {
AddWidevineWithCodecs(
WIDEVINE_HR_NON_COMPOSITING,
static_cast<SupportedCodecs>(response.non_compositing_codecs),
concrete_key_systems);
}
}
#endif // OS_ANDROID
} // namespace cdm
#endif // defined(WIDEVINE_CDM_AVAILABLE)
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