Libwebrtc video

libwebrtc/CMakeLists.txt

@@ -5,6 +5,7 @@ set(CMAKE_CXX_COMPILER clang++)
 set(CMAKE_LINKER ld.lld)
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
+#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -frtti")
 
 project(libwebrtc-webrtc-echo VERSION 1.0)
 
@@ -17,21 +18,21 @@ target_sources(libwebrtc-webrtc-echo PRIVATE
 
 add_definitions(-D_LIBCPP_ABI_UNSTABLE -D_LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS -D_LIBCPP_DEBUG=0 -DWEBRTC_LINUX -DWEBRTC_POSIX -DUSE_AURA=1 -D_HAS_EXCEPTIONS=0 -D_SILENCE_ALL_CXX20_DEPRECATION_WARNINGS)
 
-SET(CMAKE_CXX_FLAGS "-fstack-protector -funwind-tables -fPIC -O0 -g2 -std=c++20")
+# SET(CMAKE_CXX_FLAGS "-fstack-protector -funwind-tables -fPIC -O0 -g2 -std=c++20")
+set(CMAKE_CXX_FLAGS "-fstack-protector -funwind-tables -fPIC -frtti -std=c++20")
 
 target_include_directories(libwebrtc-webrtc-echo PRIVATE
     /src/webrtc-checkout/src
     /src/webrtc-checkout/src/third_party/abseil-cpp)
 
 SET(CMAKE_EXE_LINKER_FLAGS "-z noexecstack -z relro -z now -pie")
 
-link_directories(
-    /src/webrtc-checkout/src/out/Default)
+#link_directories( /src/webrtc-checkout/src/out/Default/obj)
 
 target_link_libraries(libwebrtc-webrtc-echo
-    -L/src/webrtc-checkout/src/out/Default
-    event       # Important that "event" precedes "webrtc-full" as the webrtc library contains duplicate, but older, symbols.
-    webrtc-full # This will link to libwebrtc-full.a
+    -L/src/webrtc-checkout/src/out/Default/obj
+    event
+    webrtc # This will link to libwebrtc.a from the Builder image.
     dl
     pthread
     X11

libwebrtc/Dockerfile

@@ -7,6 +7,7 @@ RUN apt update && DEBIAN_FRONTEND="noninteractive" apt install -y \
 
 RUN update-alternatives --install /usr/bin/clang clang /usr/bin/clang-18 100
 RUN update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-18 100
+RUN update-alternatives --install /usr/bin/llvm-nm llvm-nm /usr/bin/llvm-nm-18 100
 RUN update-alternatives --install /usr/bin/ld ld /usr/bin/ld.lld-18 100
 
 COPY --from=builder /src/webrtc-checkout/src /src/webrtc-checkout/src

libwebrtc/Dockerfile-AllInOne

@@ -0,0 +1,40 @@
+FROM ubuntu:20.04
+
+# Install packages for libwebrtc build and app dependencies.
+ENV DEBIAN_FRONTEND=noninteractive
+RUN echo "tzdata tzdata/Areas select Europe" | debconf-set-selections && \
+    echo "tzdata tzdata/Zones/Europe select Dublin" | debconf-set-selections
+RUN apt update && apt install -y tzdata	
+RUN echo "keyboard-configuration keyboard-configuration/layoutcode string us" | debconf-set-selections && \
+    echo "keyboard-configuration keyboard-configuration/modelcode string pc105" | debconf-set-selections
+RUN apt update && apt install -y keyboard-configuration
+RUN apt update && apt install -y curl git lsb-release python3 python-is-python3 sudo wget xz-utils file
+RUN apt update && DEBIAN_FRONTEND="noninteractive" apt install -y \
+  build-essential cmake libglib2.0-dev libx11-dev libevent-dev clang-18 lld-18
+
+# Install depot_tools
+WORKDIR /src 
+
+# https://webrtc.googlesource.com/src/+/refs/heads/master/docs/native-code/development/prerequisite-sw/index.md
+RUN git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git --depth 1 depot_tools
+ENV PATH="/src/depot_tools:${PATH}"
+
+# See the README.md file in the same directory as this docker build file for more explanations and links.
+WORKDIR /src/webrtc-checkout
+RUN fetch --nohooks webrtc
+WORKDIR /src/webrtc-checkout/src
+RUN git fetch --all
+RUN git checkout remotes/branch-heads/6834 -b m132 # 6834 == m132, see https://chromiumdash.appspot.com/branches.
+RUN gclient sync
+RUN build/install-build-deps.sh
+
+WORKDIR /src/libwebrtc-webrtc-echo
+COPY ["CMakeLists.txt", "fake_audio_capture_module.*", "HttpSimpleServer.*", "json.hpp", "libwebrtc-webrtc-echo.cpp", "PcFactory.*", "PcObserver.*", "./"]
+
+WORKDIR /src
+
+RUN gn gen out/Default --args='is_debug=false rtc_include_tests=false treat_warnings_as_errors=false use_custom_libcxx=false use_rtti=true'
+RUN autoninja -C out/Default
+
+WORKDIR /src/libwebrtc-webrtc-echo/build
+RUN cmake .. && make VERBOSE=1 && cp libwebrtc-webrtc-echo /

libwebrtc/Dockerfile-Builder

@@ -25,6 +25,5 @@ RUN git fetch --all
 RUN git checkout remotes/branch-heads/6834 -b m132 # 6834 == m132, see https://chromiumdash.appspot.com/branches.
 RUN gclient sync
 RUN build/install-build-deps.sh
-RUN gn gen out/Default --args='is_debug=false rtc_include_tests=false treat_warnings_as_errors=false use_custom_libcxx=false'
+RUN gn gen out/Default --args='is_debug=false rtc_include_tests=false treat_warnings_as_errors=false use_custom_libcxx=false use_rtti=true'
 RUN autoninja -C out/Default
-RUN ar crs out/Default/libwebrtc-full.a $(find out/Default/obj -name *\.o) 

libwebrtc/PcFactory.cpp

@@ -32,13 +32,15 @@
 #include <api/peer_connection_interface.h>
 #include <api/rtc_event_log/rtc_event_log_factory.h>
 #include <api/task_queue/default_task_queue_factory.h>
-#include <api/video_codecs/builtin_video_decoder_factory.h>
-#include <api/video_codecs/builtin_video_encoder_factory.h>
-#include <api/video_codecs/video_decoder_factory.h>
-#include <api/video_codecs/video_encoder_factory.h>
 #include <media/engine/webrtc_media_engine.h>
 #include "api/enable_media.h"
 #include "fake_audio_capture_module.h"
+#include <api/video_codecs/video_decoder_factory_template.h>
+#include <api/video_codecs/video_encoder_factory_template.h>
+#include <api/video_codecs/video_decoder_factory_template_libvpx_vp8_adapter.h>
+#include <api/video_codecs/video_encoder_factory_template_libvpx_vp8_adapter.h>
+#include <api/video_codecs/video_decoder_factory_template_libvpx_vp9_adapter.h>
+#include <api/video_codecs/video_encoder_factory_template_libvpx_vp9_adapter.h>
 
 #include <iostream>
 #include <sstream>
@@ -65,8 +67,8 @@ PcFactory::PcFactory() :
   _pcf_deps.event_log_factory = std::make_unique<webrtc::RtcEventLogFactory>(_pcf_deps.task_queue_factory.get());
   _pcf_deps.audio_encoder_factory = webrtc::CreateBuiltinAudioEncoderFactory();
   _pcf_deps.audio_decoder_factory = webrtc::CreateBuiltinAudioDecoderFactory();
-  //_pcf_deps.video_encoder_factory = webrtc::CreateBuiltinVideoEncoderFactory(); // Missing symbol in m132 build (tried everything). 
-  //_pcf_deps.video_decoder_factory = webrtc::CreateBuiltinVideoDecoderFactory(); // Missing symbol in m132 build (tried everything). 
+  _pcf_deps.video_encoder_factory = std::make_unique<webrtc::VideoEncoderFactoryTemplate<webrtc::LibvpxVp8EncoderTemplateAdapter>>();
+  _pcf_deps.video_decoder_factory = std::make_unique<webrtc::VideoDecoderFactoryTemplate<webrtc::LibvpxVp8DecoderTemplateAdapter>>();
   _pcf_deps.adm = rtc::scoped_refptr<webrtc::AudioDeviceModule>(FakeAudioCaptureModule::Create());
   _pcf_deps.audio_processing = apm; // Gets moved in EnableMedia.
 

libwebrtc/README.md

@@ -70,7 +70,7 @@ c:\dev\webrtc-checkout\src> rmdir /q /s out\Default
 # Setting use_custom_libcxx=false is critical. If it is true, the build uses the libc++ standard library from the third-party source tree, 
 # making it incompatible when linking with Visual Studio. By setting it to false, the MSVC standard library will be used (e.g msvcp140.dll), 
 # ensuring that Visual Studio can properly resolve all the required symbols.
-c:\dev\webrtc-checkout\src> gn gen out/Default --args="is_debug=false rtc_include_tests=false treat_warnings_as_errors=false use_custom_libcxx=false"
+c:\dev\webrtc-checkout\src> gn gen out/Default --args="is_debug=false rtc_include_tests=false treat_warnings_as_errors=false use_custom_libcxx=false use_rtti=true"
 c:\dev\webrtc-checkout\src> autoninja -C out/Default # DON'T use "ninja all -C out/Default", as listed on the build instructions site, it attempts to build everything in the out/Default directory rather than just libwebrtc.
 # The resultant webrtc.lib should be in out/Default/obj.
 # Note as an added bonus vcpkg installed binaries that are build the the standard msbuild toolcahin, e.g. cl and ld, are compatible with the clang and lld-ld linker.