third_party/libjingle/overrides/initialize_module.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 "allocator_shim/allocator_stub.h"
   6 #include "base/command_line.h"
   7 #include "base/files/file_path.h"
   8 #include "base/logging.h"
   9 #include "init_webrtc.h"
  10 #include "talk/media/webrtc/webrtcmediaengine.h"
  11 #include "third_party/webrtc/modules/audio_processing/include/audio_processing.h"
  12 #include "webrtc/base/basictypes.h"
  13 #include "webrtc/base/logging.h"
  14
  15 #if !defined(LIBPEERCONNECTION_IMPLEMENTATION) || defined(LIBPEERCONNECTION_LIB)
  16 #error "Only compile the allocator proxy with the shared_library implementation"
  17 #endif
  18
  19 #if defined(OS_WIN)
  20 #define ALLOC_EXPORT __declspec(dllexport)
  21 #else
  22 #define ALLOC_EXPORT __attribute__((visibility("default")))
  23 #endif
  24
  25 #if !defined(OS_MACOSX) && !defined(OS_ANDROID)
  26 // These are used by our new/delete overrides in
  27 // allocator_shim/allocator_proxy.cc
  28 AllocateFunction g_alloc = NULL;
  29 DellocateFunction g_dealloc = NULL;
  30 #endif
  31
  32 // Forward declare of the libjingle internal factory and destroy methods for the
  33 // WebRTC media engine.
  34 cricket::MediaEngineInterface* CreateWebRtcMediaEngine(
  35     webrtc::AudioDeviceModule* adm,
  36     webrtc::AudioDeviceModule* adm_sc,
  37     cricket::WebRtcVideoEncoderFactory* encoder_factory,
  38     cricket::WebRtcVideoDecoderFactory* decoder_factory);
  39
  40 void DestroyWebRtcMediaEngine(cricket::MediaEngineInterface* media_engine);
  41
  42 namespace {
  43 // Provide webrtc with a field trial and metrics implementations.
  44 // The implementations are provided by the loader via the InitializeModule.
  45
  46 // Defines webrtc::field_trial::FindFullName.
  47 FieldTrialFindFullName g_field_trial_find_ = NULL;
  48 // Defines webrtc::metrics::RtcFactoryGetCounts.
  49 RtcHistogramFactoryGetCounts g_factory_get_counts = NULL;
  50 // Defines webrtc::metrics::RtcFactoryGetEnumeration.
  51 RtcHistogramFactoryGetEnumeration g_factory_get_enumeration = NULL;
  52 // Defines webrtc::metrics::RtcAdd.
  53 RtcHistogramAdd g_histogram_add = NULL;
  54 }
  55
  56 namespace webrtc {
  57 namespace field_trial {
  58 std::string FindFullName(const std::string& trial_name) {
  59   return g_field_trial_find_(trial_name);
  60 }
  61 }  // namespace field_trial
  62
  63 namespace metrics {
  64 Histogram* HistogramFactoryGetCounts(
  65     const std::string& name, int min, int max, int bucket_count) {
  66   return g_factory_get_counts(name, min, max, bucket_count);
  67 }
  68
  69 Histogram* HistogramFactoryGetEnumeration(
  70     const std::string& name, int boundary) {
  71   return g_factory_get_enumeration(name, boundary);
  72 }
  73
  74 void HistogramAdd(
  75     Histogram* histogram_pointer, const std::string& name, int sample) {
  76   g_histogram_add(histogram_pointer, name, sample);
  77 }
  78 }  // namespace metrics
  79 }  // namespace webrtc
  80
  81 extern "C" {
  82
  83 // Initialize logging, set the forward allocator functions (not on mac), and
  84 // return pointers to libjingle's WebRTC factory methods.
  85 // Called from init_webrtc.cc.
  86 ALLOC_EXPORT
  87 bool InitializeModule(const CommandLine& command_line,
  88 #if !defined(OS_MACOSX) && !defined(OS_ANDROID)
  89                       AllocateFunction alloc,
  90                       DellocateFunction dealloc,
  91 #endif
  92                       FieldTrialFindFullName field_trial_find,
  93                       RtcHistogramFactoryGetCounts factory_get_counts,
  94                       RtcHistogramFactoryGetEnumeration factory_get_enumeration,
  95                       RtcHistogramAdd histogram_add,
  96                       logging::LogMessageHandlerFunction log_handler,
  97                       webrtc::GetCategoryEnabledPtr trace_get_category_enabled,
  98                       webrtc::AddTraceEventPtr trace_add_trace_event,
  99                       CreateWebRtcMediaEngineFunction* create_media_engine,
 100                       DestroyWebRtcMediaEngineFunction* destroy_media_engine,
 101                       InitDiagnosticLoggingDelegateFunctionFunction*
 102                           init_diagnostic_logging,
 103                       CreateWebRtcAudioProcessingFunction*
 104                           create_audio_processing) {
 105 #if !defined(OS_MACOSX) && !defined(OS_ANDROID)
 106   g_alloc = alloc;
 107   g_dealloc = dealloc;
 108 #endif
 109
 110   g_field_trial_find_ = field_trial_find;
 111   g_factory_get_counts = factory_get_counts;
 112   g_factory_get_enumeration = factory_get_enumeration;
 113   g_histogram_add = histogram_add;
 114
 115   *create_media_engine = &CreateWebRtcMediaEngine;
 116   *destroy_media_engine = &DestroyWebRtcMediaEngine;
 117   *init_diagnostic_logging = &rtc::InitDiagnosticLoggingDelegateFunction;
 118   *create_audio_processing = &webrtc::AudioProcessing::Create;
 119
 120   if (CommandLine::Init(0, NULL)) {
 121 #if !defined(OS_WIN)
 122     // This is not needed on Windows since CommandLine::Init has already
 123     // done the equivalent thing via the GetCommandLine() API.
 124     CommandLine::ForCurrentProcess()->AppendArguments(command_line, true);
 125 #endif
 126     logging::LoggingSettings settings;
 127     settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
 128     logging::InitLogging(settings);
 129
 130     // Override the log message handler to forward logs to chrome's handler.
 131     logging::SetLogMessageHandler(log_handler);
 132     webrtc::SetupEventTracer(trace_get_category_enabled,
 133                              trace_add_trace_event);
 134   }
 135
 136   return true;
 137 }
 138 }  // extern "C"