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Add Support for WebM Back

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

The previous version of this change broke playback for certain
apps that were being allowed to pass invalid MIME types before
this change was made. This version maintains backwards-compatiblity
for these apps for now by rewriting their MIME types as "video/mp4".

Merge of https://widevine-internal-review.googlesource.com/9225/
and https://widevine-internal-review.googlesource.com/9611/ from
the Widevine cdm repo.

Bug: 10638562
Change-Id: Ib37e838d08363f07b34b3a2e79a3f80a1f43e9ad
This commit is contained in:
John "Juce" Bruce
2014-03-31 14:12:11 -07:00
parent 66cadaa9fa
commit 702aadf853
16 changed files with 329 additions and 105 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
libwvdrmengine/cdm/core/src/cdm_session.cpp
View File

@@ -79,7 +79,7 @@ CdmResponseType CdmSession::RestoreOfflineSession(
DeviceFiles::LicenseState license_state;
if (!handle.RetrieveLicense(key_set_id, &license_state, &offline_pssh_data_,
if (!handle.RetrieveLicense(key_set_id, &license_state, &offline_init_data_,
&offline_key_request_, &offline_key_response_,
&offline_key_renewal_request_,
&offline_key_renewal_response_,
@@ -119,9 +119,9 @@ bool CdmSession::VerifySession(const CdmKeySystem& key_system,
}
CdmResponseType CdmSession::GenerateKeyRequest(
const CdmInitData& init_data, const CdmLicenseType license_type,
const CdmAppParameterMap& app_parameters, CdmKeyMessage* key_request,
std::string* server_url) {
const std::string& mime_type, const CdmInitData& init_data,
const CdmLicenseType license_type, const CdmAppParameterMap& app_parameters,
CdmKeyMessage* key_request, std::string* server_url) {
if (reinitialize_session_) {
CdmResponseType sts = Init();
if (sts != NO_ERROR) {
@@ -149,14 +149,18 @@ CdmResponseType CdmSession::GenerateKeyRequest(
? UNKNOWN_ERROR
: GenerateRenewalRequest(key_request, server_url);
} else {
if (mime_type != ISO_BMFF_MIME_TYPE && mime_type != WEBM_MIME_TYPE) {
LOGW("CdmSession::GenerateKeyRequest: unknown MIME type");
return KEY_ERROR;
}
if (init_data.empty() && !license_parser_.HasInitData()) {
LOGW("CdmSession::GenerateKeyRequest: init data absent");
return KEY_ERROR;
}
CdmInitData pssh_data = init_data;
if (Properties::extract_pssh_data()) {
if (!CdmEngine::ExtractWidevinePssh(init_data, &pssh_data)) {
CdmInitData extracted_init_data = init_data;
if (Properties::extract_pssh_data() && mime_type == ISO_BMFF_MIME_TYPE) {
if (!CdmEngine::ExtractWidevinePssh(init_data, &extracted_init_data)) {
return KEY_ERROR;
}
}
@@ -172,14 +176,15 @@ CdmResponseType CdmSession::GenerateKeyRequest(
}
}
if (!license_parser_.PrepareKeyRequest(pssh_data, license_type,
app_parameters, session_id_,
key_request, server_url)) {
if (!license_parser_.PrepareKeyRequest(mime_type, extracted_init_data,
license_type, app_parameters,
session_id_, key_request,
server_url)) {
return KEY_ERROR;
}
if (license_type_ == kLicenseTypeOffline) {
offline_pssh_data_ = pssh_data;
offline_init_data_ = extracted_init_data;
offline_key_request_ = *key_request;
offline_release_server_url_ = *server_url;
}
@@ -410,7 +415,7 @@ bool CdmSession::StoreLicense(DeviceFiles::LicenseState state) {
return false;
return handle.StoreLicense(
key_set_id_, state, offline_pssh_data_, offline_key_request_,
key_set_id_, state, offline_init_data_, offline_key_request_,
offline_key_response_, offline_key_renewal_request_,
offline_key_renewal_response_, offline_release_server_url_);
}