blob: fcd6806b7dbab604fa320cc98b116fd47a0f9198 [file] [log] [blame]
// Copyright 2017 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <string>
#include "starboard/shared/starboard/media/media_support_internal.h"
#include "starboard/android/shared/media_capabilities_cache.h"
#include "starboard/android/shared/media_common.h"
#include "starboard/media.h"
#include "starboard/shared/starboard/media/mime_type.h"
#include "starboard/string.h"
bool SbMediaIsSupported(SbMediaVideoCodec video_codec,
SbMediaAudioCodec audio_codec,
const char* key_system) {
using starboard::android::shared::IsWidevineL1;
using starboard::android::shared::MediaCapabilitiesCache;
using starboard::shared::starboard::media::MimeType;
// It is possible that the |key_system| comes with extra attributes, like
// `com.widevine.alpha; encryptionscheme="cenc"`. We prepend "key_system/"
// to it, so it can be parsed by MimeType.
MimeType mime_type(std::string("key_system/") + key_system);
if (!mime_type.is_valid() || !mime_type.ValidateStringParameter(
"encryptionscheme", "cenc|cbcs|cbcs-1-9")) {
return false;
}
// Use allow list to avoid accidentally introducing the support of a codec
// brought in the future.
if (audio_codec != kSbMediaAudioCodecNone &&
audio_codec != kSbMediaAudioCodecAac &&
audio_codec != kSbMediaAudioCodecOpus &&
audio_codec != kSbMediaAudioCodecAc3 &&
audio_codec != kSbMediaAudioCodecEac3) {
return false;
}
const char* key_system_type = mime_type.subtype().c_str();
if (!IsWidevineL1(key_system_type)) {
return false;
}
if (!MediaCapabilitiesCache::GetInstance()->IsWidevineSupported()) {
return false;
}
std::string encryption_scheme =
mime_type.GetParamStringValue("encryptionscheme", "");
if (encryption_scheme == "cbcs" || encryption_scheme == "cbcs-1-9") {
return MediaCapabilitiesCache::GetInstance()->IsCbcsSchemeSupported();
}
return true;
}