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Add Support for WebM

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Adds support for WebM to the CDM. Decryption remains untouched,
however the initialization data is passed differently for WebM.

Merge of https://widevine-internal-review.googlesource.com/#/c/9225/
from the widevine cdm repo.

Bug: 10638562
Change-Id: I7b8cf4888fa408af77cee103f768f5a7c8ffdc7e
This commit is contained in:
John "Juce" Bruce
2014-03-18 15:10:31 -07:00
parent a59b935928
commit ab95cf27f1
16 changed files with 314 additions and 105 deletions
Download Patch File Download Diff File Expand all files Collapse all files

90
libwvdrmengine/cdm/core/src/license.cpp
View File

@@ -84,6 +84,7 @@ using video_widevine_server::sdk::EncryptedClientIdentification;
using video_widevine_server::sdk::LicenseRequest;
using video_widevine_server::sdk::LicenseRequest_ContentIdentification;
using video_widevine_server::sdk::LicenseRequest_ContentIdentification_CENC;
using video_widevine_server::sdk::LicenseRequest_ContentIdentification_WebM;
using video_widevine_server::sdk::
LicenseRequest_ContentIdentification_ExistingLicense;
using video_widevine_server::sdk::License;
@@ -157,7 +158,8 @@ bool CdmLicense::Init(const std::string& token, CryptoSession* session,
return true;
}
bool CdmLicense::PrepareKeyRequest(const CdmInitData& init_data,
bool CdmLicense::PrepareKeyRequest(const std::string& mime_type,
const CdmInitData& init_data,
const CdmLicenseType license_type,
const CdmAppParameterMap& app_parameters,
const CdmSessionId& session_id,
@@ -167,7 +169,12 @@ bool CdmLicense::PrepareKeyRequest(const CdmInitData& init_data,
LOGE("CdmLicense::PrepareKeyRequest: not initialized");
return false;
}
if (init_data.empty() && init_data_.empty()) {
if (mime_type != ISO_BMFF_MIME_TYPE && mime_type != WEBM_MIME_TYPE) {
LOGE("CdmLicense::PrepareKeyRequest: unsupported MIME type %s",
mime_type.c_str());
return false;
}
if (init_data.empty() && stored_init_data_.empty()) {
LOGE("CdmLicense::PrepareKeyRequest: empty init data provided");
return false;
}
@@ -192,7 +199,7 @@ bool CdmLicense::PrepareKeyRequest(const CdmInitData& init_data,
serialized_service_certificate = service_certificate_;
if (privacy_mode_enabled && serialized_service_certificate.empty()) {
init_data_ = init_data;
stored_init_data_ = init_data;
return PrepareServiceCertificateRequest(signed_request, server_url);
}
@@ -308,33 +315,44 @@ bool CdmLicense::PrepareKeyRequest(const CdmInitData& init_data,
LicenseRequest_ContentIdentification* content_id =
license_request.mutable_content_id();
LicenseRequest_ContentIdentification_CENC* cenc_content_id =
content_id->mutable_cenc_id();
if (mime_type == ISO_BMFF_MIME_TYPE) {
LicenseRequest_ContentIdentification_CENC* cenc_content_id =
content_id->mutable_cenc_id();
if (!init_data.empty()) {
cenc_content_id->add_pssh(init_data);
} else if (privacy_mode_enabled && !init_data_.empty()) {
cenc_content_id->add_pssh(init_data_);
if (!init_data.empty()) {
cenc_content_id->add_pssh(init_data);
} else if (privacy_mode_enabled && !stored_init_data_.empty()) {
cenc_content_id->add_pssh(stored_init_data_);
} else {
LOGE("CdmLicense::PrepareKeyRequest: ISO-CENC init data not available");
return false;
}
if (!PrepareContentId(license_type, request_id, cenc_content_id)) {
return false;
}
} else if (mime_type == WEBM_MIME_TYPE) {
LicenseRequest_ContentIdentification_WebM* webm_content_id =
content_id->mutable_webm_id();
if (!init_data.empty()) {
webm_content_id->set_header(init_data);
} else if (privacy_mode_enabled && !stored_init_data_.empty()) {
webm_content_id->set_header(stored_init_data_);
} else {
LOGE("CdmLicense::PrepareKeyRequest: WebM init data not available");
return false;
}
if (!PrepareContentId(license_type, request_id, webm_content_id)) {
return false;
}
} else {
LOGD("CdmLicense::PrepareKeyRequest: init data not available");
LOGE("CdmLicense::PrepareKeyRequest: no support for MIME type %s",
mime_type.c_str());
return false;
}
switch (license_type) {
case kLicenseTypeOffline:
cenc_content_id->set_license_type(video_widevine_server::sdk::OFFLINE);
break;
case kLicenseTypeStreaming:
cenc_content_id->set_license_type(video_widevine_server::sdk::STREAMING);
break;
default:
LOGD("CdmLicense::PrepareKeyRequest: Unknown license type = %d",
license_type);
return false;
break;
}
cenc_content_id->set_request_id(request_id);
// TODO(jfore): The time field will be updated once the cdm wrapper
// has been updated to pass us in the time.
license_request.set_request_time(0);
@@ -766,6 +784,28 @@ CdmResponseType CdmLicense::HandleKeyErrorResponse(
}
}
template<typename T>
bool CdmLicense::PrepareContentId(const CdmLicenseType license_type,
const std::string& request_id,
T* content_id) {
switch (license_type) {
case kLicenseTypeOffline:
content_id->set_license_type(video_widevine_server::sdk::OFFLINE);
break;
case kLicenseTypeStreaming:
content_id->set_license_type(
video_widevine_server::sdk::STREAMING);
break;
default:
LOGD("CdmLicense::PrepareKeyRequest: Unknown license type = %d",
license_type);
return false;
}
content_id->set_request_id(request_id);
return true;
}
bool CdmLicense::IsKeyLoaded(const KeyId& key_id) {
return loaded_keys_.find(key_id) != loaded_keys_.end();
}