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 #if defined(OS_WIN) && defined(ARCH_CPU_X86_64)
   6 #include <math.h> // needed for _set_FMA3_enable
   7 #endif  // WIN && ARCH_CPU_X86_64
   8
   9 #include "allocator_shim/allocator_stub.h"
  10 #include "base/command_line.h"
  11 #include "base/files/file_path.h"
  12 #include "base/logging.h"
  13 #include "init_webrtc.h"
  14 #include "talk/media/webrtc/webrtcmediaengine.h"
  15 #include "webrtc/base/basictypes.h"
  16 #include "webrtc/base/logging.h"
  17
  18 #if !defined(LIBPEERCONNECTION_IMPLEMENTATION) || defined(LIBPEERCONNECTION_LIB)
  19 #error "Only compile the allocator proxy with the shared_library implementation"
  20 #endif
  21
  22 #if defined(OS_WIN)
  23 #define ALLOC_EXPORT __declspec(dllexport)
  24 #else
  25 #define ALLOC_EXPORT __attribute__((visibility("default")))
  26 #endif
  27
  28 #if !defined(OS_MACOSX) && !defined(OS_ANDROID)
  29 // These are used by our new/delete overrides in
  30 // allocator_shim/allocator_proxy.cc
  31 AllocateFunction g_alloc = NULL;
  32 DellocateFunction g_dealloc = NULL;
  33 #endif
  34
  35 // Forward declare of the libjingle internal factory and destroy methods for the
  36 // WebRTC media engine.
  37 cricket::MediaEngineInterface* CreateWebRtcMediaEngine(
  38     webrtc::AudioDeviceModule* adm,
  39     webrtc::AudioDeviceModule* adm_sc,
  40     cricket::WebRtcVideoEncoderFactory* encoder_factory,
  41     cricket::WebRtcVideoDecoderFactory* decoder_factory);
  42
  43 void DestroyWebRtcMediaEngine(cricket::MediaEngineInterface* media_engine);
  44
  45 namespace {
  46 // Provide webrtc with a field trial and metrics implementations.
  47 // The implementations are provided by the loader via the InitializeModule.
  48
  49 // Defines webrtc::field_trial::FindFullName.
  50 FieldTrialFindFullName g_field_trial_find_ = NULL;
  51 // Defines webrtc::metrics::RtcFactoryGetCounts.
  52 RtcHistogramFactoryGetCounts g_factory_get_counts = NULL;
  53 // Defines webrtc::metrics::RtcFactoryGetEnumeration.
  54 RtcHistogramFactoryGetEnumeration g_factory_get_enumeration = NULL;
  55 // Defines webrtc::metrics::RtcAdd.
  56 RtcHistogramAdd g_histogram_add = NULL;
  57 }
  58
  59 namespace webrtc {
  60 namespace field_trial {
  61 std::string FindFullName(const std::string& trial_name) {
  62   return g_field_trial_find_(trial_name);
  63 }
  64 }  // namespace field_trial
  65
  66 namespace metrics {
  67 Histogram* HistogramFactoryGetCounts(
  68     const std::string& name, int min, int max, int bucket_count) {
  69   return g_factory_get_counts(name, min, max, bucket_count);
  70 }
  71
  72 Histogram* HistogramFactoryGetEnumeration(
  73     const std::string& name, int boundary) {
  74   return g_factory_get_enumeration(name, boundary);
  75 }
  76
  77 void HistogramAdd(
  78     Histogram* histogram_pointer, const std::string& name, int sample) {
  79   g_histogram_add(histogram_pointer, name, sample);
  80 }
  81 }  // namespace metrics
  82 }  // namespace webrtc
  83
  84 extern "C" {
  85
  86 // Initialize logging, set the forward allocator functions (not on mac), and
  87 // return pointers to libjingle's WebRTC factory methods.
  88 // Called from init_webrtc.cc.
  89 ALLOC_EXPORT
  90 bool InitializeModule(const base::CommandLine& command_line,
  91 #if !defined(OS_MACOSX) && !defined(OS_ANDROID)
  92                       AllocateFunction alloc,
  93                       DellocateFunction dealloc,
  94 #endif
  95                       FieldTrialFindFullName field_trial_find,
  96                       RtcHistogramFactoryGetCounts factory_get_counts,
  97                       RtcHistogramFactoryGetEnumeration factory_get_enumeration,
  98                       RtcHistogramAdd histogram_add,
  99                       logging::LogMessageHandlerFunction log_handler,
 100                       webrtc::GetCategoryEnabledPtr trace_get_category_enabled,
 101                       webrtc::AddTraceEventPtr trace_add_trace_event,
 102                       CreateWebRtcMediaEngineFunction* create_media_engine,
 103                       DestroyWebRtcMediaEngineFunction* destroy_media_engine,
 104                       InitDiagnosticLoggingDelegateFunctionFunction*
 105                           init_diagnostic_logging) {
 106 #if !defined(OS_MACOSX) && !defined(OS_ANDROID)
 107   g_alloc = alloc;
 108   g_dealloc = dealloc;
 109 #endif
 110
 111   g_field_trial_find_ = field_trial_find;
 112   g_factory_get_counts = factory_get_counts;
 113   g_factory_get_enumeration = factory_get_enumeration;
 114   g_histogram_add = histogram_add;
 115
 116   *create_media_engine = &CreateWebRtcMediaEngine;
 117   *destroy_media_engine = &DestroyWebRtcMediaEngine;
 118   *init_diagnostic_logging = &rtc::InitDiagnosticLoggingDelegateFunction;
 119
 120 #if defined(OS_WIN) && defined(ARCH_CPU_X86_64)
 121   // VS2013 only checks the existence of FMA3 instructions, not the enabled-ness
 122   // of them at the OS level (this is fixed in VS2015). We force off usage of
 123   // FMA3 instructions in the CRT to avoid using that path and hitting illegal
 124   // instructions when running on CPUs that support FMA3, but OSs that don't.
 125   // See http://crbug.com/436603 and http://crbug.com/446983.
 126   _set_FMA3_enable(0);
 127 #endif  // WIN && ARCH_CPU_X86_64
 128
 129   if (base::CommandLine::Init(0, NULL)) {
 130 #if !defined(OS_WIN)
 131     // This is not needed on Windows since CommandLine::Init has already
 132     // done the equivalent thing via the GetCommandLine() API.
 133     base::CommandLine::ForCurrentProcess()->AppendArguments(command_line, true);
 134 #endif
 135     logging::LoggingSettings settings;
 136     settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
 137     logging::InitLogging(settings);
 138
 139     // Override the log message handler to forward logs to chrome's handler.
 140     logging::SetLogMessageHandler(log_handler);
 141     webrtc::SetupEventTracer(trace_get_category_enabled,
 142                              trace_add_trace_event);
 143   }
 144
 145   return true;
 146 }
 147 }  // extern "C"