support dummy I/O devices.

Author: cloudwebrtc

BUILD.gn

@@ -2,7 +2,9 @@ import("../webrtc.gni")
 
 declare_args() {
   libwebrtc_intel_media_sdk = false
-  libwebrtc_desktop_capture = true
+  libwebrtc_desktop_capture = false
+  libwebrtc_video_capture = false
+  libwebrtc_dummy_audio_device = true
 }
 
 if (is_android) {
@@ -41,9 +43,14 @@ rtc_shared_library("libwebrtc") {
 
   defines = [
     "USE_LIBYUV",
-    "WEBRTC_INCLUDE_INTERNAL_AUDIO_DEVICE",
   ]
 
+  if(libwebrtc_dummy_audio_device) {
+    defines += [ "LIB_WEBRTC_USE_DUMMY_AUDIO_DEVICE" ]
+  } else {
+    defines += [ "WEBRTC_INCLUDE_INTERNAL_AUDIO_DEVICE" ]
+  }
+
   if (is_win) {
     defines += [
       "LIB_WEBRTC_API_EXPORTS",
@@ -88,18 +95,13 @@ rtc_shared_library("libwebrtc") {
     "include/rtc_rtp_transceiver.h",
     "include/rtc_session_description.h",
     "include/rtc_types.h",
-    "include/rtc_video_device.h",
     "include/rtc_video_frame.h",
     "include/rtc_video_renderer.h",
     "include/rtc_video_source.h",
     "include/rtc_video_track.h",
     "include/helper.h",
     "src/helper.cc",
     "src/base/portable.cc",
-    "src/internal/vcm_capturer.cc",
-    "src/internal/vcm_capturer.h",
-    "src/internal/video_capturer.cc",
-    "src/internal/video_capturer.h",
     "src/libwebrtc.cc",
     "src/rtc_audio_device_impl.cc",
     "src/rtc_audio_device_impl.h",
@@ -137,8 +139,6 @@ rtc_shared_library("libwebrtc") {
     "src/rtc_rtp_transceiver_impl.h",
     "src/rtc_session_description_impl.cc",
     "src/rtc_session_description_impl.h",
-    "src/rtc_video_device_impl.cc",
-    "src/rtc_video_device_impl.h",
     "src/rtc_video_frame_impl.cc",
     "src/rtc_video_frame_impl.h",
     "src/rtc_video_sink_adapter.cc",
@@ -149,6 +149,28 @@ rtc_shared_library("libwebrtc") {
     "src/rtc_video_track_impl.h",
   ]
 
+  if(libwebrtc_dummy_audio_device) {
+    sources += [
+      "src/audio_device_dummy.cc",
+      "src/audio_device_dummy.h",
+    ]
+  }
+
+
+  # video capture device
+  if (libwebrtc_video_capture) {
+    defines += [ "RTC_VIDEO_CAPTURE_DEVICE" ]
+    sources += [
+      "include/rtc_video_capturer.h",
+      "src/internal/video_capturer.h",
+      "src/internal/video_capturer.cc",
+      "src/internal/vcm_capturer.cc",
+      "src/internal/vcm_capturer.h",
+      "src/rtc_video_device_impl.cc",
+      "src/rtc_video_device_impl.h",
+    ]
+  }
+  
   # intel media sdk
   if (is_win && libwebrtc_intel_media_sdk) {
     sources += [
@@ -235,7 +257,7 @@ rtc_shared_library("libwebrtc") {
 
   # screen capture device
   if (libwebrtc_desktop_capture) {
-    defines += [ "RTC_DESKTOP_DEVICE" ]
+    defines += [ "RTC_DESKTOP_CAPTURE_DEVICE" ]
     sources += [
       "include/rtc_desktop_capturer.h",
       "include/rtc_desktop_device.h",

include/rtc_desktop_device.h

@@ -1,5 +1,5 @@
-#ifndef LIB_WEBRTC_RTC_DESKTOP_DEVICE_HXX
-#define LIB_WEBRTC_RTC_DESKTOP_DEVICE_HXX
+#ifndef LIB_WEBRTC_RTC_DESKTOP_CAPTURE_DEVICE_HXX
+#define LIB_WEBRTC_RTC_DESKTOP_CAPTURE_DEVICE_HXX
 
 #include "rtc_types.h"
 

include/rtc_peerconnection_factory.h

@@ -4,7 +4,7 @@
 #include "rtc_audio_source.h"
 #include "rtc_audio_track.h"
 #include "rtc_types.h"
-#ifdef RTC_DESKTOP_DEVICE
+#ifdef RTC_DESKTOP_CAPTURE_DEVICE
 #include "rtc_desktop_device.h"
 #endif
 #include "rtc_media_stream.h"
@@ -31,24 +31,28 @@ class RTCPeerConnectionFactory : public RefCountInterface {
 
   virtual void Delete(scoped_refptr<RTCPeerConnection> peerconnection) = 0;
 
+#if !defined(LIB_WEBRTC_USE_DUMMY_AUDIO_DEVICE)
   virtual scoped_refptr<RTCAudioDevice> GetAudioDevice() = 0;
-
-  virtual scoped_refptr<RTCVideoDevice> GetVideoDevice() = 0;
-#ifdef RTC_DESKTOP_DEVICE
-  virtual scoped_refptr<RTCDesktopDevice> GetDesktopDevice() = 0;
 #endif
-  virtual scoped_refptr<RTCAudioSource> CreateAudioSource(
-      const string audio_source_label) = 0;
 
+#ifdef RTC_VIDEO_CAPTURE_DEVICE
+  virtual scoped_refptr<RTCVideoDevice> GetVideoDevice() = 0;
   virtual scoped_refptr<RTCVideoSource> CreateVideoSource(
       scoped_refptr<RTCVideoCapturer> capturer, const string video_source_label,
       scoped_refptr<RTCMediaConstraints> constraints) = 0;
-#ifdef RTC_DESKTOP_DEVICE
+#endif
+
+#ifdef RTC_DESKTOP_CAPTURE_DEVICE
+  virtual scoped_refptr<RTCDesktopDevice> GetDesktopDevice() = 0;
   virtual scoped_refptr<RTCVideoSource> CreateDesktopSource(
       scoped_refptr<RTCDesktopCapturer> capturer,
       const string video_source_label,
       scoped_refptr<RTCMediaConstraints> constraints) = 0;
 #endif
+
+  virtual scoped_refptr<RTCAudioSource> CreateAudioSource(
+      const string audio_source_label) = 0;
+
   virtual scoped_refptr<RTCAudioTrack> CreateAudioTrack(
       scoped_refptr<RTCAudioSource> source, const string track_id) = 0;