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// Copyright 2013 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 "webkit/renderer/media/crypto/key_systems_info.h"
#include "widevine_cdm_version.h" // In SHARED_INTERMEDIATE_DIR.
#if defined(WIDEVINE_CDM_AVAILABLE) && \
defined(OS_LINUX) && !defined(OS_CHROMEOS)
#include <gnu/libc-version.h>
#include "base/logging.h"
#include "base/version.h"
#endif
namespace webkit_media {
static const char kClearKeyKeySystem[] = "webkit-org.w3.clearkey";
static const char kExternalClearKeyKeySystem[] =
"org.chromium.externalclearkey";
#if defined(WIDEVINE_CDM_AVAILABLE)
// TODO(ddorwin): Automatically support parent systems: http://crbug.com/164303.
static const char kWidevineBaseKeySystem[] = "com.widevine";
#endif // defined(WIDEVINE_CDM_AVAILABLE)
#if defined(WIDEVINE_CDM_CENC_SUPPORT_AVAILABLE)
// The supported codecs depend on what the CDM provides.
static const char kWidevineVideoMp4Codecs[] =
#if defined(WIDEVINE_CDM_AVC1_SUPPORT_AVAILABLE) && \
defined(WIDEVINE_CDM_AAC_SUPPORT_AVAILABLE)
"avc1,mp4a";
#elif defined(WIDEVINE_CDM_AVC1_SUPPORT_AVAILABLE)
"avc1";
#else
""; // No codec strings are supported.
#endif
static const char kWidevineAudioMp4Codecs[] =
#if defined(WIDEVINE_CDM_AAC_SUPPORT_AVAILABLE)
"mp4a";
#else
""; // No codec strings are supported.
#endif
#endif // defined(WIDEVINE_CDM_CENC_SUPPORT_AVAILABLE)
const MediaFormatAndKeySystem kSupportedFormatKeySystemCombinations[] = {
// Clear Key.
{ "video/webm", "vorbis,vp8,vp8.0", kClearKeyKeySystem },
{ "audio/webm", "vorbis", kClearKeyKeySystem },
#if defined(GOOGLE_CHROME_BUILD) || defined(USE_PROPRIETARY_CODECS)
{ "video/mp4", "avc1,mp4a", kClearKeyKeySystem },
{ "audio/mp4", "mp4a", kClearKeyKeySystem },
#endif
// External Clear Key (used for testing).
{ "video/webm", "vorbis,vp8,vp8.0", kExternalClearKeyKeySystem },
{ "audio/webm", "vorbis", kExternalClearKeyKeySystem },
#if defined(GOOGLE_CHROME_BUILD) || defined(USE_PROPRIETARY_CODECS)
{ "video/mp4", "avc1,mp4a", kExternalClearKeyKeySystem },
{ "audio/mp4", "mp4a", kExternalClearKeyKeySystem },
#endif
#if defined(WIDEVINE_CDM_AVAILABLE)
// Widevine.
// See http://crbug.com/237627.
#if defined(DISABLE_WIDEVINE_CDM_CANPLAYTYPE)
{ "", "", kWidevineKeySystem },
#else
{ "video/webm", "vorbis,vp8,vp8.0", kWidevineKeySystem },
{ "audio/webm", "vorbis", kWidevineKeySystem },
{ "video/webm", "vorbis,vp8,vp8.0", kWidevineBaseKeySystem },
{ "audio/webm", "vorbis", kWidevineBaseKeySystem },
#if defined(GOOGLE_CHROME_BUILD) || defined(USE_PROPRIETARY_CODECS)
#if defined(WIDEVINE_CDM_CENC_SUPPORT_AVAILABLE)
{ "video/mp4", kWidevineVideoMp4Codecs, kWidevineKeySystem },
{ "video/mp4", kWidevineVideoMp4Codecs, kWidevineBaseKeySystem },
{ "audio/mp4", kWidevineAudioMp4Codecs, kWidevineKeySystem },
{ "audio/mp4", kWidevineAudioMp4Codecs, kWidevineBaseKeySystem },
#endif // defined(WIDEVINE_CDM_CENC_SUPPORT_AVAILABLE)
#endif // defined(GOOGLE_CHROME_BUILD) || defined(USE_PROPRIETARY_CODECS)
#endif // defined(DISABLE_WIDEVINE_CDM_CANPLAYTYPE)
#endif // WIDEVINE_CDM_AVAILABLE
};
const int kNumSupportedFormatKeySystemCombinations =
arraysize(kSupportedFormatKeySystemCombinations);
#if defined(ENABLE_PEPPER_CDMS)
const KeySystemPepperTypePair kKeySystemToPepperTypeMapping[] = {
{ kExternalClearKeyKeySystem, "application/x-ppapi-clearkey-cdm"},
#if defined(WIDEVINE_CDM_AVAILABLE)
{ kWidevineKeySystem, kWidevineCdmPluginMimeType}
#endif // WIDEVINE_CDM_AVAILABLE
};
const int kNumKeySystemToPepperTypeMapping =
arraysize(kKeySystemToPepperTypeMapping);
#endif // defined(ENABLE_PEPPER_CDMS)
#if defined(OS_ANDROID)
// TODO(qinmin): add UUIDs for other key systems.
const KeySystemUUIDPair kKeySystemToUUIDMapping[] = {
#if defined(WIDEVINE_CDM_AVAILABLE)
{ kWidevineKeySystem, { 0xED, 0xEF, 0x8B, 0xA9, 0x79, 0xD6, 0x4A, 0xCE,
0xA3, 0xC8, 0x27, 0xDC, 0xD5, 0x1D, 0x21, 0xED }
}
#endif // defined(WIDEVINE_CDM_AVAILABLE)
};
// arraySize() does not work if the array is empty, so use ARRAYSIZE_UNSAFE().
const int kNumKeySystemToUUIDMapping =
ARRAYSIZE_UNSAFE(kKeySystemToUUIDMapping);
#endif // defined(OS_ANDROID)
bool IsSystemCompatible(const std::string& key_system) {
#if defined(WIDEVINE_CDM_AVAILABLE) && \
defined(OS_LINUX) && !defined(OS_CHROMEOS)
if (key_system == kWidevineKeySystem ||
key_system == kWidevineBaseKeySystem) {
Version glibc_version(gnu_get_libc_version());
DCHECK(glibc_version.IsValid());
return !glibc_version.IsOlderThan(WIDEVINE_CDM_MIN_GLIBC_VERSION);
}
#endif
return true;
}
std::string KeySystemNameForUMAGeneric(const std::string& key_system) {
if (key_system == kClearKeyKeySystem)
return "ClearKey";
#if defined(WIDEVINE_CDM_AVAILABLE)
if (key_system == kWidevineKeySystem)
return "Widevine";
#endif // WIDEVINE_CDM_AVAILABLE
return "Unknown";
}
bool CanUseBuiltInAesDecryptor(const std::string& key_system) {
return key_system == kClearKeyKeySystem;
}
} // namespace webkit_media
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