blob: a8cd90e103086f8bed9b8e4d663d473bc938701b [file] [log] [blame]
// 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 "media/cdm/ppapi/ppapi_cdm_adapter.h"
#include <string.h>
#include "base/macros.h"
#include "build/build_config.h"
#include "media/base/limits.h"
#include "media/cdm/ppapi/cdm_file_io_impl.h"
#include "media/cdm/ppapi/cdm_logging.h"
#include "media/cdm/supported_cdm_versions.h"
#include "ppapi/c/ppb_console.h"
#include "ppapi/cpp/private/uma_private.h"
#if defined(CHECK_DOCUMENT_URL)
#include "ppapi/cpp/dev/url_util_dev.h"
#include "ppapi/cpp/instance_handle.h"
#endif // defined(CHECK_DOCUMENT_URL)
namespace {
// Constants for UMA reporting of file size (in KB) via HistogramCustomCounts().
// Note that the histogram is log-scaled (rather than linear).
const uint32_t kSizeKBMin = 1;
const uint32_t kSizeKBMax = 512 * 1024; // 512MB
const uint32_t kSizeKBBuckets = 100;
#if !defined(NDEBUG)
#define DLOG_TO_CONSOLE(message) LogToConsole(message);
#else
#define DLOG_TO_CONSOLE(message) (void)(message);
#endif
bool IsMainThread() {
return pp::Module::Get()->core()->IsMainThread();
}
// Posts a task to run |cb| on the main thread. The task is posted even if the
// current thread is the main thread.
void PostOnMain(pp::CompletionCallback cb) {
pp::Module::Get()->core()->CallOnMainThread(0, cb, PP_OK);
}
// Ensures |cb| is called on the main thread, either because the current thread
// is the main thread or by posting it to the main thread.
void CallOnMain(pp::CompletionCallback cb) {
// TODO(tomfinegan): This is only necessary because PPAPI doesn't allow calls
// off the main thread yet. Remove this once the change lands.
if (IsMainThread())
cb.Run(PP_OK);
else
PostOnMain(cb);
}
// Configures a cdm::InputBuffer. |subsamples| must exist as long as
// |input_buffer| is in use.
void ConfigureInputBuffer(const pp::Buffer_Dev& encrypted_buffer,
const PP_EncryptedBlockInfo& encrypted_block_info,
std::vector<cdm::SubsampleEntry>* subsamples,
cdm::InputBuffer* input_buffer) {
PP_DCHECK(subsamples);
PP_DCHECK(!encrypted_buffer.is_null());
input_buffer->data = static_cast<uint8_t*>(encrypted_buffer.data());
input_buffer->data_size = encrypted_block_info.data_size;
PP_DCHECK(encrypted_buffer.size() >= input_buffer->data_size);
PP_DCHECK(encrypted_block_info.key_id_size <=
arraysize(encrypted_block_info.key_id));
input_buffer->key_id_size = encrypted_block_info.key_id_size;
input_buffer->key_id =
input_buffer->key_id_size > 0 ? encrypted_block_info.key_id : NULL;
PP_DCHECK(encrypted_block_info.iv_size <= arraysize(encrypted_block_info.iv));
input_buffer->iv_size = encrypted_block_info.iv_size;
input_buffer->iv =
encrypted_block_info.iv_size > 0 ? encrypted_block_info.iv : NULL;
input_buffer->num_subsamples = encrypted_block_info.num_subsamples;
if (encrypted_block_info.num_subsamples > 0) {
subsamples->reserve(encrypted_block_info.num_subsamples);
for (uint32_t i = 0; i < encrypted_block_info.num_subsamples; ++i) {
subsamples->push_back(
cdm::SubsampleEntry(encrypted_block_info.subsamples[i].clear_bytes,
encrypted_block_info.subsamples[i].cipher_bytes));
}
input_buffer->subsamples = &(*subsamples)[0];
}
input_buffer->timestamp = encrypted_block_info.tracking_info.timestamp;
}
PP_DecryptResult CdmStatusToPpDecryptResult(cdm::Status status) {
switch (status) {
case cdm::kSuccess:
return PP_DECRYPTRESULT_SUCCESS;
case cdm::kNoKey:
return PP_DECRYPTRESULT_DECRYPT_NOKEY;
case cdm::kNeedMoreData:
return PP_DECRYPTRESULT_NEEDMOREDATA;
case cdm::kDecryptError:
return PP_DECRYPTRESULT_DECRYPT_ERROR;
case cdm::kDecodeError:
return PP_DECRYPTRESULT_DECODE_ERROR;
case cdm::kSessionError:
case cdm::kDeferredInitialization:
// kSessionError and kDeferredInitialization are only used by the
// Initialize* methods internally and never returned. Deliver*
// methods should never use these values.
break;
}
PP_NOTREACHED();
return PP_DECRYPTRESULT_DECRYPT_ERROR;
}
PP_DecryptedFrameFormat CdmVideoFormatToPpDecryptedFrameFormat(
cdm::VideoFormat format) {
switch (format) {
case cdm::kYv12:
return PP_DECRYPTEDFRAMEFORMAT_YV12;
case cdm::kI420:
return PP_DECRYPTEDFRAMEFORMAT_I420;
default:
return PP_DECRYPTEDFRAMEFORMAT_UNKNOWN;
}
}
PP_DecryptedSampleFormat CdmAudioFormatToPpDecryptedSampleFormat(
cdm::AudioFormat format) {
switch (format) {
case cdm::kAudioFormatU8:
return PP_DECRYPTEDSAMPLEFORMAT_U8;
case cdm::kAudioFormatS16:
return PP_DECRYPTEDSAMPLEFORMAT_S16;
case cdm::kAudioFormatS32:
return PP_DECRYPTEDSAMPLEFORMAT_S32;
case cdm::kAudioFormatF32:
return PP_DECRYPTEDSAMPLEFORMAT_F32;
case cdm::kAudioFormatPlanarS16:
return PP_DECRYPTEDSAMPLEFORMAT_PLANAR_S16;
case cdm::kAudioFormatPlanarF32:
return PP_DECRYPTEDSAMPLEFORMAT_PLANAR_F32;
default:
return PP_DECRYPTEDSAMPLEFORMAT_UNKNOWN;
}
}
cdm::AudioDecoderConfig::AudioCodec PpAudioCodecToCdmAudioCodec(
PP_AudioCodec codec) {
switch (codec) {
case PP_AUDIOCODEC_VORBIS:
return cdm::AudioDecoderConfig::kCodecVorbis;
case PP_AUDIOCODEC_AAC:
return cdm::AudioDecoderConfig::kCodecAac;
default:
return cdm::AudioDecoderConfig::kUnknownAudioCodec;
}
}
cdm::VideoDecoderConfig::VideoCodec PpVideoCodecToCdmVideoCodec(
PP_VideoCodec codec) {
switch (codec) {
case PP_VIDEOCODEC_VP8:
return cdm::VideoDecoderConfig::kCodecVp8;
case PP_VIDEOCODEC_H264:
return cdm::VideoDecoderConfig::kCodecH264;
case PP_VIDEOCODEC_VP9:
return cdm::VideoDecoderConfig::kCodecVp9;
default:
return cdm::VideoDecoderConfig::kUnknownVideoCodec;
}
}
cdm::VideoDecoderConfig::VideoCodecProfile PpVCProfileToCdmVCProfile(
PP_VideoCodecProfile profile) {
switch (profile) {
case PP_VIDEOCODECPROFILE_NOT_NEEDED:
return cdm::VideoDecoderConfig::kProfileNotNeeded;
case PP_VIDEOCODECPROFILE_H264_BASELINE:
return cdm::VideoDecoderConfig::kH264ProfileBaseline;
case PP_VIDEOCODECPROFILE_H264_MAIN:
return cdm::VideoDecoderConfig::kH264ProfileMain;
case PP_VIDEOCODECPROFILE_H264_EXTENDED:
return cdm::VideoDecoderConfig::kH264ProfileExtended;
case PP_VIDEOCODECPROFILE_H264_HIGH:
return cdm::VideoDecoderConfig::kH264ProfileHigh;
case PP_VIDEOCODECPROFILE_H264_HIGH_10:
return cdm::VideoDecoderConfig::kH264ProfileHigh10;
case PP_VIDEOCODECPROFILE_H264_HIGH_422:
return cdm::VideoDecoderConfig::kH264ProfileHigh422;
case PP_VIDEOCODECPROFILE_H264_HIGH_444_PREDICTIVE:
return cdm::VideoDecoderConfig::kH264ProfileHigh444Predictive;
default:
return cdm::VideoDecoderConfig::kUnknownVideoCodecProfile;
}
}
cdm::VideoFormat PpDecryptedFrameFormatToCdmVideoFormat(
PP_DecryptedFrameFormat format) {
switch (format) {
case PP_DECRYPTEDFRAMEFORMAT_YV12:
return cdm::kYv12;
case PP_DECRYPTEDFRAMEFORMAT_I420:
return cdm::kI420;
default:
return cdm::kUnknownVideoFormat;
}
}
cdm::StreamType PpDecryptorStreamTypeToCdmStreamType(
PP_DecryptorStreamType stream_type) {
switch (stream_type) {
case PP_DECRYPTORSTREAMTYPE_AUDIO:
return cdm::kStreamTypeAudio;
case PP_DECRYPTORSTREAMTYPE_VIDEO:
return cdm::kStreamTypeVideo;
}
PP_NOTREACHED();
return cdm::kStreamTypeVideo;
}
cdm::SessionType PpSessionTypeToCdmSessionType(PP_SessionType session_type) {
switch (session_type) {
case PP_SESSIONTYPE_TEMPORARY:
return cdm::kTemporary;
case PP_SESSIONTYPE_PERSISTENT_LICENSE:
return cdm::kPersistentLicense;
case PP_SESSIONTYPE_PERSISTENT_RELEASE:
return cdm::kPersistentKeyRelease;
}
PP_NOTREACHED();
return cdm::kTemporary;
}
cdm::InitDataType PpInitDataTypeToCdmInitDataType(
PP_InitDataType init_data_type) {
switch (init_data_type) {
case PP_INITDATATYPE_CENC:
return cdm::kCenc;
case PP_INITDATATYPE_KEYIDS:
return cdm::kKeyIds;
case PP_INITDATATYPE_WEBM:
return cdm::kWebM;
}
PP_NOTREACHED();
return cdm::kKeyIds;
}
PP_CdmExceptionCode CdmExceptionTypeToPpCdmExceptionType(cdm::Error error) {
switch (error) {
case cdm::kNotSupportedError:
return PP_CDMEXCEPTIONCODE_NOTSUPPORTEDERROR;
case cdm::kInvalidStateError:
return PP_CDMEXCEPTIONCODE_INVALIDSTATEERROR;
case cdm::kInvalidAccessError:
return PP_CDMEXCEPTIONCODE_INVALIDACCESSERROR;
case cdm::kQuotaExceededError:
return PP_CDMEXCEPTIONCODE_QUOTAEXCEEDEDERROR;
case cdm::kUnknownError:
return PP_CDMEXCEPTIONCODE_UNKNOWNERROR;
case cdm::kClientError:
return PP_CDMEXCEPTIONCODE_CLIENTERROR;
case cdm::kOutputError:
return PP_CDMEXCEPTIONCODE_OUTPUTERROR;
}
PP_NOTREACHED();
return PP_CDMEXCEPTIONCODE_UNKNOWNERROR;
}
PP_CdmMessageType CdmMessageTypeToPpMessageType(cdm::MessageType message) {
switch (message) {
case cdm::kLicenseRequest:
return PP_CDMMESSAGETYPE_LICENSE_REQUEST;
case cdm::kLicenseRenewal:
return PP_CDMMESSAGETYPE_LICENSE_RENEWAL;
case cdm::kLicenseRelease:
return PP_CDMMESSAGETYPE_LICENSE_RELEASE;
}
PP_NOTREACHED();
return PP_CDMMESSAGETYPE_LICENSE_REQUEST;
}
PP_CdmKeyStatus CdmKeyStatusToPpKeyStatus(cdm::KeyStatus status) {
switch (status) {
case cdm::kUsable:
return PP_CDMKEYSTATUS_USABLE;
case cdm::kInternalError:
return PP_CDMKEYSTATUS_INVALID;
case cdm::kExpired:
return PP_CDMKEYSTATUS_EXPIRED;
case cdm::kOutputRestricted:
return PP_CDMKEYSTATUS_OUTPUTRESTRICTED;
case cdm::kOutputDownscaled:
return PP_CDMKEYSTATUS_OUTPUTDOWNSCALED;
case cdm::kStatusPending:
return PP_CDMKEYSTATUS_STATUSPENDING;
case cdm::kReleased:
return PP_CDMKEYSTATUS_RELEASED;
}
PP_NOTREACHED();
return PP_CDMKEYSTATUS_INVALID;
}
} // namespace
namespace media {
PpapiCdmAdapter::PpapiCdmAdapter(PP_Instance instance, pp::Module* module)
: pp::Instance(instance),
pp::ContentDecryptor_Private(this),
output_protection_(this),
output_link_mask_(0),
output_protection_mask_(0),
query_output_protection_in_progress_(false),
uma_for_output_protection_query_reported_(false),
uma_for_output_protection_positive_result_reported_(false),
#if defined(OS_CHROMEOS)
platform_verification_(this),
#endif
allocator_(this),
cdm_(NULL),
allow_distinctive_identifier_(false),
allow_persistent_state_(false),
deferred_initialize_audio_decoder_(false),
deferred_audio_decoder_config_id_(0),
deferred_initialize_video_decoder_(false),
deferred_video_decoder_config_id_(0),
last_read_file_size_kb_(0),
file_size_uma_reported_(false) {
callback_factory_.Initialize(this);
}
PpapiCdmAdapter::~PpapiCdmAdapter() {}
CdmWrapper* PpapiCdmAdapter::CreateCdmInstance(const std::string& key_system) {
// The Pepper plugin will be staticly linked to the CDM, so pass the plugin's
// CreateCdmInstance() to CdmWrapper.
CdmWrapper* cdm = CdmWrapper::Create(::CreateCdmInstance, key_system.data(),
key_system.size(), GetCdmHost, this);
const std::string message = "CDM instance for " + key_system +
(cdm ? "" : " could not be") + " created.";
DLOG_TO_CONSOLE(message);
CDM_DLOG() << message;
if (cdm) {
pp::UMAPrivate uma_interface(this);
// The interface version is relatively small. So using normal histogram
// instead of a sparse histogram is okay. The following DCHECK asserts this.
PP_DCHECK(cdm->GetInterfaceVersion() <= 30);
uma_interface.HistogramEnumeration(
"Media.EME.CdmInterfaceVersion", cdm->GetInterfaceVersion(),
// Sample value should always be less than the boundary. Hence use "+1".
// See the comment on HistogramEnumeration in ppb_uma_private.idl.
cdm::ContentDecryptionModule::kVersion + 1);
}
return cdm;
}
void PpapiCdmAdapter::Initialize(uint32_t promise_id,
const std::string& key_system,
bool allow_distinctive_identifier,
bool allow_persistent_state) {
PP_DCHECK(!key_system.empty());
PP_DCHECK(!cdm_);
#if defined(CHECK_DOCUMENT_URL)
PP_URLComponents_Dev url_components = {};
const pp::URLUtil_Dev* url_util = pp::URLUtil_Dev::Get();
if (!url_util) {
RejectPromise(promise_id, cdm::kUnknownError, 0,
"Unable to determine origin.");
return;
}
pp::Var href = url_util->GetDocumentURL(pp::InstanceHandle(pp_instance()),
&url_components);
PP_DCHECK(href.is_string());
std::string url = href.AsString();
PP_DCHECK(!url.empty());
std::string url_scheme =
url.substr(url_components.scheme.begin, url_components.scheme.len);
if (url_scheme != "file") {
// Skip this check for file:// URLs as they don't have a host component.
PP_DCHECK(url_components.host.begin);
PP_DCHECK(0 < url_components.host.len);
}
#endif // defined(CHECK_DOCUMENT_URL)
cdm_ = make_linked_ptr(CreateCdmInstance(key_system));
if (!cdm_) {
RejectPromise(promise_id, cdm::kInvalidAccessError, 0,
"Unable to create CDM.");
return;
}
key_system_ = key_system;
allow_distinctive_identifier_ = allow_distinctive_identifier;
allow_persistent_state_ = allow_persistent_state;
cdm_->Initialize(allow_distinctive_identifier, allow_persistent_state);
OnResolvePromise(promise_id);
}
void PpapiCdmAdapter::SetServerCertificate(
uint32_t promise_id,
pp::VarArrayBuffer server_certificate) {
const uint8_t* server_certificate_ptr =
static_cast<const uint8_t*>(server_certificate.Map());
const uint32_t server_certificate_size = server_certificate.ByteLength();
if (!server_certificate_ptr ||
server_certificate_size < media::limits::kMinCertificateLength ||
server_certificate_size > media::limits::kMaxCertificateLength) {
RejectPromise(promise_id, cdm::kInvalidAccessError, 0,
"Incorrect certificate.");
return;
}
cdm_->SetServerCertificate(promise_id, server_certificate_ptr,
server_certificate_size);
}
void PpapiCdmAdapter::CreateSessionAndGenerateRequest(
uint32_t promise_id,
PP_SessionType session_type,
PP_InitDataType init_data_type,
pp::VarArrayBuffer init_data) {
cdm_->CreateSessionAndGenerateRequest(
promise_id, PpSessionTypeToCdmSessionType(session_type),
PpInitDataTypeToCdmInitDataType(init_data_type),
static_cast<const uint8_t*>(init_data.Map()), init_data.ByteLength());
}
void PpapiCdmAdapter::LoadSession(uint32_t promise_id,
PP_SessionType session_type,
const std::string& session_id) {
cdm_->LoadSession(promise_id, PpSessionTypeToCdmSessionType(session_type),
session_id.data(), session_id.size());
}
void PpapiCdmAdapter::UpdateSession(uint32_t promise_id,
const std::string& session_id,
pp::VarArrayBuffer response) {
const uint8_t* response_ptr = static_cast<const uint8_t*>(response.Map());
const uint32_t response_size = response.ByteLength();
PP_DCHECK(!session_id.empty());
PP_DCHECK(response_ptr);
PP_DCHECK(response_size > 0);
cdm_->UpdateSession(promise_id, session_id.data(), session_id.length(),
response_ptr, response_size);
}
void PpapiCdmAdapter::CloseSession(uint32_t promise_id,
const std::string& session_id) {
cdm_->CloseSession(promise_id, session_id.data(), session_id.length());
}
void PpapiCdmAdapter::RemoveSession(uint32_t promise_id,
const std::string& session_id) {
cdm_->RemoveSession(promise_id, session_id.data(), session_id.length());
}
// Note: In the following decryption/decoding related functions, errors are NOT
// reported via KeyError, but are reported via corresponding PPB calls.
void PpapiCdmAdapter::Decrypt(
pp::Buffer_Dev encrypted_buffer,
const PP_EncryptedBlockInfo& encrypted_block_info) {
PP_DCHECK(!encrypted_buffer.is_null());
// Release a buffer that the caller indicated it is finished with.
allocator_.Release(encrypted_block_info.tracking_info.buffer_id);
cdm::Status status = cdm::kDecryptError;
LinkedDecryptedBlock decrypted_block(new DecryptedBlockImpl());
if (cdm_) {
cdm::InputBuffer input_buffer;
std::vector<cdm::SubsampleEntry> subsamples;
ConfigureInputBuffer(encrypted_buffer, encrypted_block_info, &subsamples,
&input_buffer);
status = cdm_->Decrypt(input_buffer, decrypted_block.get());
PP_DCHECK(status != cdm::kSuccess ||
(decrypted_block->DecryptedBuffer() &&
decrypted_block->DecryptedBuffer()->Size()));
}
CallOnMain(callback_factory_.NewCallback(&PpapiCdmAdapter::DeliverBlock,
status, decrypted_block,
encrypted_block_info.tracking_info));
}
void PpapiCdmAdapter::InitializeAudioDecoder(
const PP_AudioDecoderConfig& decoder_config,
pp::Buffer_Dev extra_data_buffer) {
PP_DCHECK(!deferred_initialize_audio_decoder_);
PP_DCHECK(deferred_audio_decoder_config_id_ == 0);
cdm::Status status = cdm::kSessionError;
if (cdm_) {
cdm::AudioDecoderConfig cdm_decoder_config;
cdm_decoder_config.codec =
PpAudioCodecToCdmAudioCodec(decoder_config.codec);
cdm_decoder_config.channel_count = decoder_config.channel_count;
cdm_decoder_config.bits_per_channel = decoder_config.bits_per_channel;
cdm_decoder_config.samples_per_second = decoder_config.samples_per_second;
cdm_decoder_config.extra_data =
static_cast<uint8_t*>(extra_data_buffer.data());
cdm_decoder_config.extra_data_size = extra_data_buffer.size();
status = cdm_->InitializeAudioDecoder(cdm_decoder_config);
}
if (status == cdm::kDeferredInitialization) {
deferred_initialize_audio_decoder_ = true;
deferred_audio_decoder_config_id_ = decoder_config.request_id;
return;
}
CallOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::DecoderInitializeDone, PP_DECRYPTORSTREAMTYPE_AUDIO,
decoder_config.request_id, status == cdm::kSuccess));
}
void PpapiCdmAdapter::InitializeVideoDecoder(
const PP_VideoDecoderConfig& decoder_config,
pp::Buffer_Dev extra_data_buffer) {
PP_DCHECK(!deferred_initialize_video_decoder_);
PP_DCHECK(deferred_video_decoder_config_id_ == 0);
cdm::Status status = cdm::kSessionError;
if (cdm_) {
cdm::VideoDecoderConfig cdm_decoder_config;
cdm_decoder_config.codec =
PpVideoCodecToCdmVideoCodec(decoder_config.codec);
cdm_decoder_config.profile =
PpVCProfileToCdmVCProfile(decoder_config.profile);
cdm_decoder_config.format =
PpDecryptedFrameFormatToCdmVideoFormat(decoder_config.format);
cdm_decoder_config.coded_size.width = decoder_config.width;
cdm_decoder_config.coded_size.height = decoder_config.height;
cdm_decoder_config.extra_data =
static_cast<uint8_t*>(extra_data_buffer.data());
cdm_decoder_config.extra_data_size = extra_data_buffer.size();
status = cdm_->InitializeVideoDecoder(cdm_decoder_config);
}
if (status == cdm::kDeferredInitialization) {
deferred_initialize_video_decoder_ = true;
deferred_video_decoder_config_id_ = decoder_config.request_id;
return;
}
CallOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::DecoderInitializeDone, PP_DECRYPTORSTREAMTYPE_VIDEO,
decoder_config.request_id, status == cdm::kSuccess));
}
void PpapiCdmAdapter::DeinitializeDecoder(PP_DecryptorStreamType decoder_type,
uint32_t request_id) {
PP_DCHECK(cdm_); // InitializeXxxxxDecoder should have succeeded.
if (cdm_) {
cdm_->DeinitializeDecoder(
PpDecryptorStreamTypeToCdmStreamType(decoder_type));
}
CallOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::DecoderDeinitializeDone, decoder_type, request_id));
}
void PpapiCdmAdapter::ResetDecoder(PP_DecryptorStreamType decoder_type,
uint32_t request_id) {
PP_DCHECK(cdm_); // InitializeXxxxxDecoder should have succeeded.
if (cdm_)
cdm_->ResetDecoder(PpDecryptorStreamTypeToCdmStreamType(decoder_type));
CallOnMain(callback_factory_.NewCallback(&PpapiCdmAdapter::DecoderResetDone,
decoder_type, request_id));
}
void PpapiCdmAdapter::DecryptAndDecode(
PP_DecryptorStreamType decoder_type,
pp::Buffer_Dev encrypted_buffer,
const PP_EncryptedBlockInfo& encrypted_block_info) {
PP_DCHECK(cdm_); // InitializeXxxxxDecoder should have succeeded.
// Release a buffer that the caller indicated it is finished with.
allocator_.Release(encrypted_block_info.tracking_info.buffer_id);
cdm::InputBuffer input_buffer;
std::vector<cdm::SubsampleEntry> subsamples;
if (cdm_ && !encrypted_buffer.is_null()) {
ConfigureInputBuffer(encrypted_buffer, encrypted_block_info, &subsamples,
&input_buffer);
}
cdm::Status status = cdm::kDecodeError;
switch (decoder_type) {
case PP_DECRYPTORSTREAMTYPE_VIDEO: {
LinkedVideoFrame video_frame(new VideoFrameImpl());
if (cdm_)
status = cdm_->DecryptAndDecodeFrame(input_buffer, video_frame.get());
CallOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::DeliverFrame, status, video_frame,
encrypted_block_info.tracking_info));
return;
}
case PP_DECRYPTORSTREAMTYPE_AUDIO: {
LinkedAudioFrames audio_frames(new AudioFramesImpl());
if (cdm_) {
status =
cdm_->DecryptAndDecodeSamples(input_buffer, audio_frames.get());
}
CallOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::DeliverSamples, status, audio_frames,
encrypted_block_info.tracking_info));
return;
}
default:
PP_NOTREACHED();
return;
}
}
cdm::Buffer* PpapiCdmAdapter::Allocate(uint32_t capacity) {
return allocator_.Allocate(capacity);
}
void PpapiCdmAdapter::SetTimer(int64_t delay_ms, void* context) {
// NOTE: doesn't really need to run on the main thread; could just as well run
// on a helper thread if |cdm_| were thread-friendly and care was taken. We
// only use CallOnMainThread() here to get delayed-execution behavior.
pp::Module::Get()->core()->CallOnMainThread(
delay_ms,
callback_factory_.NewCallback(&PpapiCdmAdapter::TimerExpired, context),
PP_OK);
}
void PpapiCdmAdapter::TimerExpired(int32_t result, void* context) {
PP_DCHECK(result == PP_OK);
cdm_->TimerExpired(context);
}
cdm::Time PpapiCdmAdapter::GetCurrentWallTime() {
return pp::Module::Get()->core()->GetTime();
}
void PpapiCdmAdapter::OnResolveNewSessionPromise(uint32_t promise_id,
const char* session_id,
uint32_t session_id_size) {
PostOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::SendPromiseResolvedWithSessionInternal, promise_id,
std::string(session_id, session_id_size)));
}
void PpapiCdmAdapter::OnResolvePromise(uint32_t promise_id) {
PostOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::SendPromiseResolvedInternal, promise_id));
}
void PpapiCdmAdapter::OnRejectPromise(uint32_t promise_id,
cdm::Error error,
uint32_t system_code,
const char* error_message,
uint32_t error_message_size) {
// UMA to investigate http://crbug.com/410630
// TODO(xhwang): Remove after bug is fixed.
if (system_code == 0x27) {
pp::UMAPrivate uma_interface(this);
uma_interface.HistogramCustomCounts("Media.EME.CdmFileIO.FileSizeKBOnError",
last_read_file_size_kb_, kSizeKBMin,
kSizeKBMax, kSizeKBBuckets);
}
RejectPromise(promise_id, error, system_code,
std::string(error_message, error_message_size));
}
void PpapiCdmAdapter::RejectPromise(uint32_t promise_id,
cdm::Error error,
uint32_t system_code,
const std::string& error_message) {
PostOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::SendPromiseRejectedInternal, promise_id,
SessionError(error, system_code, error_message)));
}
void PpapiCdmAdapter::OnSessionMessage(const char* session_id,
uint32_t session_id_size,
cdm::MessageType message_type,
const char* message,
uint32_t message_size,
const char* legacy_destination_url,
uint32_t legacy_destination_url_size) {
// |legacy_destination_url| is obsolete and will be removed as part of
// https://crbug.com/570216.
// License requests should not specify |legacy_destination_url|.
PP_DCHECK(legacy_destination_url_size == 0 ||
message_type != cdm::MessageType::kLicenseRequest);
PostOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::SendSessionMessageInternal,
SessionMessage(std::string(session_id, session_id_size), message_type,
message, message_size)));
}
void PpapiCdmAdapter::OnSessionKeysChange(const char* session_id,
uint32_t session_id_size,
bool has_additional_usable_key,
const cdm::KeyInformation* keys_info,
uint32_t keys_info_count) {
std::vector<PP_KeyInformation> key_information;
for (uint32_t i = 0; i < keys_info_count; ++i) {
const auto& key_info = keys_info[i];
PP_KeyInformation next_key = {};
if (key_info.key_id_size > sizeof(next_key.key_id)) {
PP_NOTREACHED();
continue;
}
// Copy key_id into |next_key|.
memcpy(next_key.key_id, key_info.key_id, key_info.key_id_size);
// Set remaining fields on |next_key|.
next_key.key_id_size = key_info.key_id_size;
next_key.key_status = CdmKeyStatusToPpKeyStatus(key_info.status);
next_key.system_code = key_info.system_code;
key_information.push_back(next_key);
}
PostOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::SendSessionKeysChangeInternal,
std::string(session_id, session_id_size), has_additional_usable_key,
key_information));
}
void PpapiCdmAdapter::OnExpirationChange(const char* session_id,
uint32_t session_id_size,
cdm::Time new_expiry_time) {
PostOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::SendExpirationChangeInternal,
std::string(session_id, session_id_size), new_expiry_time));
}
void PpapiCdmAdapter::OnSessionClosed(const char* session_id,
uint32_t session_id_size) {
PostOnMain(
callback_factory_.NewCallback(&PpapiCdmAdapter::SendSessionClosedInternal,
std::string(session_id, session_id_size)));
}
void PpapiCdmAdapter::OnLegacySessionError(const char* session_id,
uint32_t session_id_size,
cdm::Error error,
uint32_t system_code,
const char* error_message,
uint32_t error_message_size) {
// Obsolete and will be removed as part of https://crbug.com/570216.
}
// Helpers to pass the event to Pepper.
void PpapiCdmAdapter::SendPromiseResolvedInternal(int32_t result,
uint32_t promise_id) {
PP_DCHECK(result == PP_OK);
pp::ContentDecryptor_Private::PromiseResolved(promise_id);
}
void PpapiCdmAdapter::SendPromiseResolvedWithSessionInternal(
int32_t result,
uint32_t promise_id,
const std::string& session_id) {
PP_DCHECK(result == PP_OK);
pp::ContentDecryptor_Private::PromiseResolvedWithSession(promise_id,
session_id);
}
void PpapiCdmAdapter::SendPromiseRejectedInternal(int32_t result,
uint32_t promise_id,
const SessionError& error) {
PP_DCHECK(result == PP_OK);
pp::ContentDecryptor_Private::PromiseRejected(
promise_id, CdmExceptionTypeToPpCdmExceptionType(error.error),
error.system_code, error.error_description);
}
void PpapiCdmAdapter::SendSessionMessageInternal(
int32_t result,
const SessionMessage& message) {
PP_DCHECK(result == PP_OK);
pp::VarArrayBuffer message_array_buffer(message.message.size());
if (message.message.size() > 0) {
memcpy(message_array_buffer.Map(), message.message.data(),
message.message.size());
}
pp::ContentDecryptor_Private::SessionMessage(
message.session_id, CdmMessageTypeToPpMessageType(message.message_type),
message_array_buffer, std::string());
}
void PpapiCdmAdapter::SendSessionClosedInternal(int32_t result,
const std::string& session_id) {
PP_DCHECK(result == PP_OK);
pp::ContentDecryptor_Private::SessionClosed(session_id);
}
void PpapiCdmAdapter::SendSessionKeysChangeInternal(
int32_t result,
const std::string& session_id,
bool has_additional_usable_key,
const std::vector<PP_KeyInformation>& key_info) {
PP_DCHECK(result == PP_OK);
pp::ContentDecryptor_Private::SessionKeysChange(
session_id, has_additional_usable_key, key_info);
}
void PpapiCdmAdapter::SendExpirationChangeInternal(
int32_t result,
const std::string& session_id,
cdm::Time new_expiry_time) {
PP_DCHECK(result == PP_OK);
pp::ContentDecryptor_Private::SessionExpirationChange(session_id,
new_expiry_time);
}
void PpapiCdmAdapter::DeliverBlock(
int32_t result,
const cdm::Status& status,
const LinkedDecryptedBlock& decrypted_block,
const PP_DecryptTrackingInfo& tracking_info) {
PP_DCHECK(result == PP_OK);
PP_DecryptedBlockInfo decrypted_block_info = {};
decrypted_block_info.tracking_info = tracking_info;
decrypted_block_info.tracking_info.timestamp = decrypted_block->Timestamp();
decrypted_block_info.tracking_info.buffer_id = 0;
decrypted_block_info.data_size = 0;
decrypted_block_info.result = CdmStatusToPpDecryptResult(status);
pp::Buffer_Dev buffer;
if (decrypted_block_info.result == PP_DECRYPTRESULT_SUCCESS) {
PP_DCHECK(decrypted_block.get() && decrypted_block->DecryptedBuffer());
if (!decrypted_block.get() || !decrypted_block->DecryptedBuffer()) {
PP_NOTREACHED();
decrypted_block_info.result = PP_DECRYPTRESULT_DECRYPT_ERROR;
} else {
PpbBuffer* ppb_buffer =
static_cast<PpbBuffer*>(decrypted_block->DecryptedBuffer());
decrypted_block_info.tracking_info.buffer_id = ppb_buffer->buffer_id();
decrypted_block_info.data_size = ppb_buffer->Size();
buffer = ppb_buffer->TakeBuffer();
}
}
pp::ContentDecryptor_Private::DeliverBlock(buffer, decrypted_block_info);
}
void PpapiCdmAdapter::DecoderInitializeDone(int32_t result,
PP_DecryptorStreamType decoder_type,
uint32_t request_id,
bool success) {
PP_DCHECK(result == PP_OK);
pp::ContentDecryptor_Private::DecoderInitializeDone(decoder_type, request_id,
success);
}
void PpapiCdmAdapter::DecoderDeinitializeDone(
int32_t result,
PP_DecryptorStreamType decoder_type,
uint32_t request_id) {
pp::ContentDecryptor_Private::DecoderDeinitializeDone(decoder_type,
request_id);
}
void PpapiCdmAdapter::DecoderResetDone(int32_t result,
PP_DecryptorStreamType decoder_type,
uint32_t request_id) {
pp::ContentDecryptor_Private::DecoderResetDone(decoder_type, request_id);
}
void PpapiCdmAdapter::DeliverFrame(
int32_t result,
const cdm::Status& status,
const LinkedVideoFrame& video_frame,
const PP_DecryptTrackingInfo& tracking_info) {
PP_DCHECK(result == PP_OK);
PP_DecryptedFrameInfo decrypted_frame_info = {};
decrypted_frame_info.tracking_info.request_id = tracking_info.request_id;
decrypted_frame_info.tracking_info.buffer_id = 0;
decrypted_frame_info.result = CdmStatusToPpDecryptResult(status);
pp::Buffer_Dev buffer;
if (decrypted_frame_info.result == PP_DECRYPTRESULT_SUCCESS) {
if (!IsValidVideoFrame(video_frame)) {
PP_NOTREACHED();
decrypted_frame_info.result = PP_DECRYPTRESULT_DECODE_ERROR;
} else {
PpbBuffer* ppb_buffer =
static_cast<PpbBuffer*>(video_frame->FrameBuffer());
decrypted_frame_info.tracking_info.timestamp = video_frame->Timestamp();
decrypted_frame_info.tracking_info.buffer_id = ppb_buffer->buffer_id();
decrypted_frame_info.format =
CdmVideoFormatToPpDecryptedFrameFormat(video_frame->Format());
decrypted_frame_info.width = video_frame->Size().width;
decrypted_frame_info.height = video_frame->Size().height;
decrypted_frame_info.plane_offsets[PP_DECRYPTEDFRAMEPLANES_Y] =
video_frame->PlaneOffset(cdm::VideoFrame::kYPlane);
decrypted_frame_info.plane_offsets[PP_DECRYPTEDFRAMEPLANES_U] =
video_frame->PlaneOffset(cdm::VideoFrame::kUPlane);
decrypted_frame_info.plane_offsets[PP_DECRYPTEDFRAMEPLANES_V] =
video_frame->PlaneOffset(cdm::VideoFrame::kVPlane);
decrypted_frame_info.strides[PP_DECRYPTEDFRAMEPLANES_Y] =
video_frame->Stride(cdm::VideoFrame::kYPlane);
decrypted_frame_info.strides[PP_DECRYPTEDFRAMEPLANES_U] =
video_frame->Stride(cdm::VideoFrame::kUPlane);
decrypted_frame_info.strides[PP_DECRYPTEDFRAMEPLANES_V] =
video_frame->Stride(cdm::VideoFrame::kVPlane);
buffer = ppb_buffer->TakeBuffer();
}
}
pp::ContentDecryptor_Private::DeliverFrame(buffer, decrypted_frame_info);
}
void PpapiCdmAdapter::DeliverSamples(
int32_t result,
const cdm::Status& status,
const LinkedAudioFrames& audio_frames,
const PP_DecryptTrackingInfo& tracking_info) {
PP_DCHECK(result == PP_OK);
PP_DecryptedSampleInfo decrypted_sample_info = {};
decrypted_sample_info.tracking_info = tracking_info;
decrypted_sample_info.tracking_info.timestamp = 0;
decrypted_sample_info.tracking_info.buffer_id = 0;
decrypted_sample_info.data_size = 0;
decrypted_sample_info.result = CdmStatusToPpDecryptResult(status);
pp::Buffer_Dev buffer;
if (decrypted_sample_info.result == PP_DECRYPTRESULT_SUCCESS) {
PP_DCHECK(audio_frames.get() && audio_frames->FrameBuffer());
if (!audio_frames.get() || !audio_frames->FrameBuffer()) {
PP_NOTREACHED();
decrypted_sample_info.result = PP_DECRYPTRESULT_DECRYPT_ERROR;
} else {
PpbBuffer* ppb_buffer =
static_cast<PpbBuffer*>(audio_frames->FrameBuffer());
decrypted_sample_info.tracking_info.buffer_id = ppb_buffer->buffer_id();
decrypted_sample_info.data_size = ppb_buffer->Size();
decrypted_sample_info.format =
CdmAudioFormatToPpDecryptedSampleFormat(audio_frames->Format());
buffer = ppb_buffer->TakeBuffer();
}
}
pp::ContentDecryptor_Private::DeliverSamples(buffer, decrypted_sample_info);
}
bool PpapiCdmAdapter::IsValidVideoFrame(const LinkedVideoFrame& video_frame) {
if (!video_frame.get() || !video_frame->FrameBuffer() ||
(video_frame->Format() != cdm::kI420 &&
video_frame->Format() != cdm::kYv12)) {
CDM_DLOG() << "Invalid video frame!";
return false;
}
PpbBuffer* ppb_buffer = static_cast<PpbBuffer*>(video_frame->FrameBuffer());
for (uint32_t i = 0; i < cdm::VideoFrame::kMaxPlanes; ++i) {
int plane_height = (i == cdm::VideoFrame::kYPlane)
? video_frame->Size().height
: (video_frame->Size().height + 1) / 2;
cdm::VideoFrame::VideoPlane plane =
static_cast<cdm::VideoFrame::VideoPlane>(i);
if (ppb_buffer->Size() < video_frame->PlaneOffset(plane) +
plane_height * video_frame->Stride(plane)) {
return false;
}
}
return true;
}
void PpapiCdmAdapter::OnFirstFileRead(int32_t file_size_bytes) {
PP_DCHECK(IsMainThread());
PP_DCHECK(file_size_bytes >= 0);
last_read_file_size_kb_ = file_size_bytes / 1024;
if (file_size_uma_reported_)
return;
pp::UMAPrivate uma_interface(this);
uma_interface.HistogramCustomCounts(
"Media.EME.CdmFileIO.FileSizeKBOnFirstRead", last_read_file_size_kb_,
kSizeKBMin, kSizeKBMax, kSizeKBBuckets);
file_size_uma_reported_ = true;
}
#if !defined(NDEBUG)
void PpapiCdmAdapter::LogToConsole(const pp::Var& value) {
PP_DCHECK(IsMainThread());
const PPB_Console* console = reinterpret_cast<const PPB_Console*>(
pp::Module::Get()->GetBrowserInterface(PPB_CONSOLE_INTERFACE));
console->Log(pp_instance(), PP_LOGLEVEL_LOG, value.pp_var());
}
#endif // !defined(NDEBUG)
void PpapiCdmAdapter::SendPlatformChallenge(const char* service_id,
uint32_t service_id_size,
const char* challenge,
uint32_t challenge_size) {
#if defined(OS_CHROMEOS)
// If access to a distinctive identifier is not allowed, block platform
// verification to prevent access to such an identifier.
if (allow_distinctive_identifier_) {
pp::VarArrayBuffer challenge_var(challenge_size);
uint8_t* var_data = static_cast<uint8_t*>(challenge_var.Map());
memcpy(var_data, challenge, challenge_size);
std::string service_id_str(service_id, service_id_size);
linked_ptr<PepperPlatformChallengeResponse> response(
new PepperPlatformChallengeResponse());
int32_t result = platform_verification_.ChallengePlatform(
pp::Var(service_id_str), challenge_var, &response->signed_data,
&response->signed_data_signature, &response->platform_key_certificate,
callback_factory_.NewCallback(
&PpapiCdmAdapter::SendPlatformChallengeDone, response));
challenge_var.Unmap();
if (result == PP_OK_COMPLETIONPENDING)
return;
// Fall through on error and issue an empty OnPlatformChallengeResponse().
PP_DCHECK(result != PP_OK);
}
#endif
cdm::PlatformChallengeResponse platform_challenge_response = {};
cdm_->OnPlatformChallengeResponse(platform_challenge_response);
}
void PpapiCdmAdapter::EnableOutputProtection(uint32_t desired_protection_mask) {
int32_t result = output_protection_.EnableProtection(
desired_protection_mask,
callback_factory_.NewCallback(&PpapiCdmAdapter::EnableProtectionDone));
// Errors are ignored since clients must call QueryOutputProtectionStatus() to
// inspect the protection status on a regular basis.
if (result != PP_OK && result != PP_OK_COMPLETIONPENDING)
CDM_DLOG() << __FUNCTION__ << " failed!";
}
void PpapiCdmAdapter::QueryOutputProtectionStatus() {
PP_DCHECK(!query_output_protection_in_progress_);
output_link_mask_ = output_protection_mask_ = 0;
const int32_t result = output_protection_.QueryStatus(
&output_link_mask_, &output_protection_mask_,
callback_factory_.NewCallback(
&PpapiCdmAdapter::QueryOutputProtectionStatusDone));
if (result == PP_OK_COMPLETIONPENDING) {
query_output_protection_in_progress_ = true;
ReportOutputProtectionQuery();
return;
}
// Fall through on error and issue an empty OnQueryOutputProtectionStatus().
PP_DCHECK(result != PP_OK);
CDM_DLOG() << __FUNCTION__ << " failed, result = " << result;
}
void PpapiCdmAdapter::OnDeferredInitializationDone(cdm::StreamType stream_type,
cdm::Status decoder_status) {
switch (stream_type) {
case cdm::kStreamTypeAudio:
PP_DCHECK(deferred_initialize_audio_decoder_);
CallOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::DecoderInitializeDone, PP_DECRYPTORSTREAMTYPE_AUDIO,
deferred_audio_decoder_config_id_, decoder_status == cdm::kSuccess));
deferred_initialize_audio_decoder_ = false;
deferred_audio_decoder_config_id_ = 0;
break;
case cdm::kStreamTypeVideo:
PP_DCHECK(deferred_initialize_video_decoder_);
CallOnMain(callback_factory_.NewCallback(
&PpapiCdmAdapter::DecoderInitializeDone, PP_DECRYPTORSTREAMTYPE_VIDEO,
deferred_video_decoder_config_id_, decoder_status == cdm::kSuccess));
deferred_initialize_video_decoder_ = false;
deferred_video_decoder_config_id_ = 0;
break;
}
}
// The CDM owns the returned object and must call FileIO::Close() to release it.
cdm::FileIO* PpapiCdmAdapter::CreateFileIO(cdm::FileIOClient* client) {
if (!allow_persistent_state_) {
CDM_DLOG()
<< "Cannot create FileIO because persistent state is not allowed.";
return nullptr;
}
return new CdmFileIOImpl(
client, pp_instance(),
callback_factory_.NewCallback(&PpapiCdmAdapter::OnFirstFileRead));
}
void PpapiCdmAdapter::ReportOutputProtectionUMA(OutputProtectionStatus status) {
pp::UMAPrivate uma_interface(this);
uma_interface.HistogramEnumeration("Media.EME.OutputProtection", status,
OUTPUT_PROTECTION_MAX);
}
void PpapiCdmAdapter::ReportOutputProtectionQuery() {
if (uma_for_output_protection_query_reported_)
return;
ReportOutputProtectionUMA(OUTPUT_PROTECTION_QUERIED);
uma_for_output_protection_query_reported_ = true;
}
void PpapiCdmAdapter::ReportOutputProtectionQueryResult() {
if (uma_for_output_protection_positive_result_reported_)
return;
// Report UMAs for output protection query result.
uint32_t external_links = (output_link_mask_ & ~cdm::kLinkTypeInternal);
if (!external_links) {
ReportOutputProtectionUMA(OUTPUT_PROTECTION_NO_EXTERNAL_LINK);
uma_for_output_protection_positive_result_reported_ = true;
return;
}
const uint32_t kProtectableLinks =
cdm::kLinkTypeHDMI | cdm::kLinkTypeDVI | cdm::kLinkTypeDisplayPort;
bool is_unprotectable_link_connected =
(external_links & ~kProtectableLinks) != 0;
bool is_hdcp_enabled_on_all_protectable_links =
(output_protection_mask_ & cdm::kProtectionHDCP) != 0;
if (!is_unprotectable_link_connected &&
is_hdcp_enabled_on_all_protectable_links) {
ReportOutputProtectionUMA(OUTPUT_PROTECTION_ALL_EXTERNAL_LINKS_PROTECTED);
uma_for_output_protection_positive_result_reported_ = true;
return;
}
// Do not report a negative result because it could be a false negative.
// Instead, we will calculate number of negatives using the total number of
// queries and success results.
}
#if defined(OS_CHROMEOS)
void PpapiCdmAdapter::SendPlatformChallengeDone(
int32_t result,
const linked_ptr<PepperPlatformChallengeResponse>& response) {
if (result != PP_OK) {
CDM_DLOG() << __FUNCTION__ << ": Platform challenge failed!";
cdm::PlatformChallengeResponse platform_challenge_response = {};
cdm_->OnPlatformChallengeResponse(platform_challenge_response);
return;
}
pp::VarArrayBuffer signed_data_var(response->signed_data);
pp::VarArrayBuffer signed_data_signature_var(response->signed_data_signature);
std::string platform_key_certificate_string =
response->platform_key_certificate.AsString();
cdm::PlatformChallengeResponse platform_challenge_response = {
static_cast<uint8_t*>(signed_data_var.Map()),
signed_data_var.ByteLength(),
static_cast<uint8_t*>(signed_data_signature_var.Map()),
signed_data_signature_var.ByteLength(),
reinterpret_cast<const uint8_t*>(platform_key_certificate_string.data()),
static_cast<uint32_t>(platform_key_certificate_string.length())};
cdm_->OnPlatformChallengeResponse(platform_challenge_response);
signed_data_var.Unmap();
signed_data_signature_var.Unmap();
}
#endif
void PpapiCdmAdapter::EnableProtectionDone(int32_t result) {
// Does nothing since clients must call QueryOutputProtectionStatus() to
// inspect the protection status on a regular basis.
CDM_DLOG() << __FUNCTION__ << " : " << result;
}
void PpapiCdmAdapter::QueryOutputProtectionStatusDone(int32_t result) {
PP_DCHECK(query_output_protection_in_progress_);
query_output_protection_in_progress_ = false;
// Return a query status of failed on error.
cdm::QueryResult query_result;
if (result != PP_OK) {
CDM_DLOG() << __FUNCTION__ << " failed, result = " << result;
output_link_mask_ = output_protection_mask_ = 0;
query_result = cdm::kQueryFailed;
} else {
query_result = cdm::kQuerySucceeded;
ReportOutputProtectionQueryResult();
}
cdm_->OnQueryOutputProtectionStatus(query_result, output_link_mask_,
output_protection_mask_);
}
PpapiCdmAdapter::SessionError::SessionError(
cdm::Error error,
uint32_t system_code,
const std::string& error_description)
: error(error),
system_code(system_code),
error_description(error_description) {}
PpapiCdmAdapter::SessionMessage::SessionMessage(const std::string& session_id,
cdm::MessageType message_type,
const char* message,
uint32_t message_size)
: session_id(session_id),
message_type(message_type),
message(message, message + message_size) {}
void* GetCdmHost(int host_interface_version, void* user_data) {
if (!host_interface_version || !user_data)
return NULL;
static_assert(
cdm::ContentDecryptionModule::Host::kVersion == cdm::Host_8::kVersion,
"update the code below");
// Ensure IsSupportedCdmHostVersion matches implementation of this function.
// Always update this DCHECK when updating this function.
// If this check fails, update this function and DCHECK or update
// IsSupportedCdmHostVersion.
PP_DCHECK(
// Future version is not supported.
!IsSupportedCdmHostVersion(cdm::Host_8::kVersion + 1) &&
// Current version is supported.
IsSupportedCdmHostVersion(cdm::Host_8::kVersion) &&
// Include all previous supported versions (if any) here.
// One older than the oldest supported version is not supported.
!IsSupportedCdmHostVersion(cdm::Host_8::kVersion - 1));
PP_DCHECK(IsSupportedCdmHostVersion(host_interface_version));
PpapiCdmAdapter* cdm_adapter = static_cast<PpapiCdmAdapter*>(user_data);
CDM_DLOG() << "Create CDM Host with version " << host_interface_version;
switch (host_interface_version) {
case cdm::Host_8::kVersion:
return static_cast<cdm::Host_8*>(cdm_adapter);
default:
PP_NOTREACHED();
return NULL;
}
}
// This object is the global object representing this plugin library as long
// as it is loaded.
class PpapiCdmAdapterModule : public pp::Module {
public:
PpapiCdmAdapterModule() : pp::Module() {
// This function blocks the renderer thread (PluginInstance::Initialize()).
// Move this call to other places if this may be a concern in the future.
INITIALIZE_CDM_MODULE();
}
virtual ~PpapiCdmAdapterModule() { DeinitializeCdmModule(); }
virtual pp::Instance* CreateInstance(PP_Instance instance) {
return new PpapiCdmAdapter(instance, this);
}
private:
CdmFileIOImpl::ResourceTracker cdm_file_io_impl_resource_tracker;
};
} // namespace media
namespace pp {
// Factory function for your specialization of the Module object.
Module* CreateModule() {
return new media::PpapiCdmAdapterModule();
}
} // namespace pp