Handle plugin instance crash in ContentDecryptorDelegate.

media/cdm/ppapi/external_clear_key/clear_key_cdm.cc

 // 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/external_clear_key/clear_key_cdm.h"
 
 #include <algorithm>
 #include <sstream>
 #include <string>
 #include <vector>
@@ skipping 48 matching lines @@
 
 static bool g_ffmpeg_lib_initialized = InitializeFFmpegLibraries();
 #endif  // CLEAR_KEY_CDM_USE_FFMPEG_DECODER
 
 const char kClearKeyCdmVersion[] = "0.1.0.1";
 const char kExternalClearKeyKeySystem[] = "org.chromium.externalclearkey";
 const char kExternalClearKeyDecryptOnlyKeySystem[] =
     "org.chromium.externalclearkey.decryptonly";
 const char kExternalClearKeyFileIOTestKeySystem[] =
     "org.chromium.externalclearkey.fileiotest";
+const char kExternalClearKeyCrashKeySystem[] =
+    "org.chromium.externalclearkey.crash";
+
 const int64 kSecondsPerMinute = 60;
 const int64 kMsPerSecond = 1000;
 const int64 kInitialTimerDelayMs = 200;
 const int64 kMaxTimerDelayMs = 1 * kSecondsPerMinute * kMsPerSecond;
 // Heart beat message header. If a key message starts with |kHeartBeatHeader|,
 // it's a heart beat message. Otherwise, it's a key request.
 const char kHeartBeatHeader[] = "HEARTBEAT";
 // CDM file IO test result header.
 const char kFileIOTestResultHeader[] = "FILEIOTESTRESULT";
 
@@ skipping 61 matching lines @@
 
 void* CreateCdmInstance(int cdm_interface_version,
                         const char* key_system, uint32_t key_system_size,
                         GetCdmHostFunc get_cdm_host_func,
                         void* user_data) {
   DVLOG(1) << "CreateCdmInstance()";
 
   std::string key_system_string(key_system, key_system_size);
   if (key_system_string != kExternalClearKeyKeySystem &&
       key_system_string != kExternalClearKeyDecryptOnlyKeySystem &&
-      key_system_string != kExternalClearKeyFileIOTestKeySystem) {
+      key_system_string != kExternalClearKeyFileIOTestKeySystem &&
+      key_system_string != kExternalClearKeyCrashKeySystem) {
     DVLOG(1) << "Unsupported key system:" << key_system_string;
     return NULL;
   }
 
   if (cdm_interface_version != media::ClearKeyCdmInterface::kVersion)
     return NULL;
 
   media::ClearKeyCdmHost* host = static_cast<media::ClearKeyCdmHost*>(
       get_cdm_host_func(media::ClearKeyCdmHost::kVersion, user_data));
   if (!host)
@@ skipping 223 matching lines @@
   }
 
   return video_decoder_->DecodeFrame(data, size, timestamp, decoded_frame);
 }
 
 cdm::Status ClearKeyCdm::DecryptAndDecodeSamples(
     const cdm::InputBuffer& encrypted_buffer,
     cdm::AudioFrames* audio_frames) {
   DVLOG(1) << "DecryptAndDecodeSamples()";
 
+  // Trigger a crash on purpose for testing purpose.
+  if (key_system_ == kExternalClearKeyCrashKeySystem)
+    CHECK(false);
+
   scoped_refptr<media::DecoderBuffer> buffer;
   cdm::Status status = DecryptToMediaDecoderBuffer(encrypted_buffer, &buffer);
 
   if (status != cdm::kSuccess)
     return status;
 
 #if defined(CLEAR_KEY_CDM_USE_FFMPEG_DECODER)
   const uint8_t* data = NULL;
   int32_t size = 0;
   int64_t timestamp = 0;
@@ skipping 176 matching lines @@
 
 void ClearKeyCdm::OnFileIOTestComplete(bool success) {
   DVLOG(1) << __FUNCTION__ << ": " << success;
   std::string message = GetFileIOTestResultMessage(success);
   host_->OnSessionMessage(
       last_session_id_, message.data(), message.size(), NULL, 0);
   file_io_test_runner_.reset();
 }
 
 }  // namespace media