content/renderer/media/webcontentdecryptionmodulesession_impl.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/renderer/media/webcontentdecryptionmodulesession_impl.h"
   6
   7 #include "base/callback_helpers.h"
   8 #include "base/logging.h"
   9 #include "base/strings/string_util.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "content/renderer/media/cdm_session_adapter.h"
  12 #include "third_party/WebKit/public/platform/WebURL.h"
  13
  14 namespace content {
  15
  16 WebContentDecryptionModuleSessionImpl::WebContentDecryptionModuleSessionImpl(
  17     uint32 session_id,
  18     Client* client,
  19     const scoped_refptr<CdmSessionAdapter>& adapter)
  20     : adapter_(adapter),
  21       client_(client),
  22       session_id_(session_id) {
  23 }
  24
  25 WebContentDecryptionModuleSessionImpl::
  26     ~WebContentDecryptionModuleSessionImpl() {
  27   adapter_->RemoveSession(session_id_);
  28 }
  29
  30 blink::WebString WebContentDecryptionModuleSessionImpl::sessionId() const {
  31   return web_session_id_;
  32 }
  33
  34 void WebContentDecryptionModuleSessionImpl::initializeNewSession(
  35     const blink::WebString& mime_type,
  36     const uint8* init_data, size_t init_data_length) {
  37   // TODO(ddorwin): Guard against this in supported types check and remove this.
  38   // Chromium only supports ASCII MIME types.
  39   if (!base::IsStringASCII(mime_type)) {
  40     NOTREACHED();
  41     OnSessionError(media::MediaKeys::kUnknownError, 0);
  42     return;
  43   }
  44
  45   adapter_->InitializeNewSession(
  46       session_id_, base::UTF16ToASCII(mime_type), init_data, init_data_length);
  47 }
  48
  49 void WebContentDecryptionModuleSessionImpl::update(const uint8* response,
  50                                                    size_t response_length) {
  51   DCHECK(response);
  52   adapter_->UpdateSession(session_id_, response, response_length);
  53 }
  54
  55 void WebContentDecryptionModuleSessionImpl::release() {
  56   adapter_->ReleaseSession(session_id_);
  57 }
  58
  59 void WebContentDecryptionModuleSessionImpl::OnSessionCreated(
  60     const std::string& web_session_id) {
  61   // Due to heartbeat messages, OnSessionCreated() can get called multiple
  62   // times.
  63   // TODO(jrummell): Once all CDMs are updated to support reference ids,
  64   // OnSessionCreated() should only be called once, and the second check can be
  65   // removed.
  66   blink::WebString id = blink::WebString::fromUTF8(web_session_id);
  67   DCHECK(web_session_id_.isEmpty() || web_session_id_ == id)
  68       << "Session ID may not be changed once set.";
  69   web_session_id_ = id;
  70 }
  71
  72 void WebContentDecryptionModuleSessionImpl::OnSessionMessage(
  73     const std::vector<uint8>& message,
  74     const GURL& destination_url) {
  75   client_->message(
  76       message.empty() ? NULL : &message[0], message.size(), destination_url);
  77 }
  78
  79 void WebContentDecryptionModuleSessionImpl::OnSessionReady() {
  80   client_->ready();
  81 }
  82
  83 void WebContentDecryptionModuleSessionImpl::OnSessionClosed() {
  84   client_->close();
  85 }
  86
  87 void WebContentDecryptionModuleSessionImpl::OnSessionError(
  88     media::MediaKeys::KeyError error_code,
  89     uint32 system_code) {
  90   client_->error(static_cast<Client::MediaKeyErrorCode>(error_code),
  91                  system_code);
  92 }
  93
  94 }  // namespace content