feat: CAPI interop

BUILD.gn

@@ -1,6 +1,7 @@
 import("../webrtc.gni")
 
 declare_args() {
+  libwebrtc_interop = true
   libwebrtc_intel_media_sdk = false
   libwebrtc_desktop_capture = true
 }
@@ -68,13 +69,15 @@ rtc_shared_library("libwebrtc") {
     "include/base/refcountedobject.h",
     "include/base/scoped_ref_ptr.h",
     "include/libwebrtc.h",
+    "include/rtc_base_list.h",
     "include/rtc_audio_device.h",
     "include/rtc_audio_source.h",
     "include/rtc_audio_track.h",
     "include/rtc_data_channel.h",
     "include/rtc_dtls_transport.h",
     "include/rtc_dtmf_sender.h",
     "include/rtc_frame_cryptor.h",
+    "include/rtc_sdp_parse_error.h",
     "include/rtc_ice_candidate.h",
     "include/rtc_media_stream.h",
     "include/rtc_media_track.h",
@@ -93,13 +96,22 @@ rtc_shared_library("libwebrtc") {
     "include/rtc_video_renderer.h",
     "include/rtc_video_source.h",
     "include/rtc_video_track.h",
+    "include/rtc_dummy_video_capturer.h",
+    "include/rtc_audio_data.h",
+    "include/rtc_dummy_audio_source.h",
     "include/helper.h",
     "src/helper.cc",
     "src/base/portable.cc",
+    "src/internal/audio_util.cc",
+    "src/internal/audio_util.h",
     "src/internal/vcm_capturer.cc",
     "src/internal/vcm_capturer.h",
     "src/internal/video_capturer.cc",
     "src/internal/video_capturer.h",
+    "src/internal/dummy_capturer.cc",
+    "src/internal/dummy_capturer.h",
+    "src/internal/dummy_audio_capturer.cc",
+    "src/internal/dummy_audio_capturer.h",
     "src/libwebrtc.cc",
     "src/rtc_audio_device_impl.cc",
     "src/rtc_audio_device_impl.h",
@@ -115,6 +127,8 @@ rtc_shared_library("libwebrtc") {
     "src/rtc_dtmf_sender_impl.h",
     "src/rtc_frame_cryptor_impl.cc",
     "src/rtc_frame_cryptor_impl.h",
+    "src/rtc_sdp_parse_error_impl.cc",
+    "src/rtc_sdp_parse_error_impl.h",
     "src/rtc_ice_candidate_impl.cc",
     "src/rtc_ice_candidate_impl.h",
     "src/rtc_media_stream_impl.cc",
@@ -141,13 +155,63 @@ rtc_shared_library("libwebrtc") {
     "src/rtc_video_device_impl.h",
     "src/rtc_video_frame_impl.cc",
     "src/rtc_video_frame_impl.h",
+    "src/rtc_video_renderer_impl.cc",
+    "src/rtc_video_renderer_impl.h",
     "src/rtc_video_sink_adapter.cc",
     "src/rtc_video_sink_adapter.h",
     "src/rtc_video_source_impl.cc",
     "src/rtc_video_source_impl.h",
     "src/rtc_video_track_impl.cc",
     "src/rtc_video_track_impl.h",
+    "src/rtc_dummy_video_capturer_impl.cc",
+    "src/rtc_dummy_video_capturer_impl.h",
+    "src/rtc_audio_data_impl.cc",
+    "src/rtc_audio_data_impl.h",
+    "src/rtc_dummy_audio_source_impl.cc",
+    "src/rtc_dummy_audio_source_impl.h",
   ]
+
+  # for interop methods
+  if (is_win && libwebrtc_interop) {
+    sources += [
+      "include/interop_macros.h",
+      "include/interop_api.h",
+      "src/interop/ref_counted_object_interop.cc",
+      "src/interop/libwebrtc_interop.cc",
+      "src/interop/rtc_sdp_parse_error_interop.cc",
+      "src/interop/rtc_mediaconstraints_interop.cc",
+      "src/interop/rtc_peerconnection_factory_interop.cc",
+      "src/interop/rtc_audio_data_interop.cc",
+      "src/interop/rtc_media_track_interop.cc",
+      "src/interop/rtc_audio_device_interop.cc",
+      "src/interop/rtc_audio_track_interop.cc",
+      "src/interop/rtc_dummy_audio_source_interop.cc",
+      "src/interop/rtc_video_device_interop.cc",
+      "src/interop/rtc_video_track_interop.cc",
+      "src/interop/rtc_video_frame_interop.cc",
+      "src/interop/rtc_video_renderer_interop.cc",
+      "src/interop/rtc_dummy_video_capturer_interop.cc",
+      "src/interop/rtc_data_channel_interop.cc",
+      "src/interop/rtc_ice_candidate_interop.cc",
+      "src/interop/rtc_media_stream_interop.cc",
+      "src/interop/rtc_dtmf_sender_interop.cc",
+      "src/interop/rtc_dtls_transport_interop.cc",
+      "src/interop/rtc_rtp_capabilities_interop.cc",
+      "src/interop/rtc_rtp_parameters_interop.cc",
+      "src/interop/rtc_rtp_receiver_interop.cc",
+      "src/interop/rtc_rtp_sender_interop.cc",
+      "src/interop/rtc_rtp_transceiver_interop.cc",
+      "src/interop/rtc_peerconnection_interop.cc",
+    ]
+
+    if (libwebrtc_desktop_capture) {
+      sources += [
+        "src/interop/rtc_desktop_media_list_interop.cc",
+        "src/interop/rtc_desktop_capturer_interop.cc",
+        "src/interop/rtc_desktop_device_interop.cc",
+      ]
+    }
+  }
 
   # intel media sdk
   if (is_win && libwebrtc_intel_media_sdk) {

README.md

@@ -48,8 +48,13 @@ gclient sync
 
 Confirm that it is currently in the `src`.
 
-```bash
-git clone https://github.com/webrtc-sdk/libwebrtc
+```patch
+- git clone https://github.com/webrtc-sdk/libwebrtc
++ git clone https://github.com/gerd0gdu/libwebrtc
+```
+
+```batch
+git clone https://github.com/gerd0gdu/libwebrtc
 ```
 
 ### Modify webrtc's src/BUILD.gn file and add libwebrtc to group("default").

include/base/portable.h

@@ -16,6 +16,7 @@
 #include <map>
 #include <string>
 #include <vector>
+#include <sstream>
 
 /**
  * This file defines structures that can be passed across shared library/DLL
@@ -38,6 +39,9 @@ namespace portable {
 
 #define PORTABLE_STRING_BUF_SIZE 48
 
+template <typename T>
+class vector;
+
 class string {
  private:
   char m_buf[PORTABLE_STRING_BUF_SIZE];
@@ -49,7 +53,11 @@ class string {
   LIB_PORTABLE_API void init(const char* str, size_t len);
   LIB_PORTABLE_API void destroy();
 
-  inline string(const char* str) { init(str, strlen(str)); }
+  inline string(const char* str)
+  {
+    const char* strTemp = str ? str : "\0";
+    init(strTemp, strlen(strTemp));
+  }
 
   inline string(const std::string& str) { init(str.c_str(), str.length()); }
 
@@ -71,7 +79,7 @@ class string {
     return *this;
   }
 
-  inline size_t size() { return m_length; }
+  inline size_t size() const { return m_length; }
 
   inline const char* c_string() const {
     return m_dynamic == 0 ? m_buf : m_dynamic;
@@ -80,6 +88,52 @@ class string {
   inline std::string std_string() const {
     return std::string(m_dynamic == 0 ? m_buf : m_dynamic, m_length);
   }
+
+  /**
+   * Makes safe copies up to the size of the output buffer.
+   * 
+   * @param dest - Output buffer
+   * @param sz_dest - Size of the output buffer
+   * @return size_t - Number of characters copied. (excluding the ending character '\0')
+   */
+  inline size_t copy_to(char* dest, size_t sz_dest) const {
+    if (dest == 0) { return 0; }
+    *dest = '\0';
+    if (sz_dest == 0 || m_length == 0) { return 0; }
+    size_t cch_len = sz_dest - 1;
+    // safe copy
+    strncpy(dest, c_string(), cch_len);
+    dest[cch_len] = '\0';
+    return cch_len;
+  }
+
+  inline std::vector<string> split(string delimiter, bool removeEmptyEntries = true)
+  {
+    std::string input = std_string();
+    std::string item;
+    std::vector<string> tokens;
+    size_t start = 0;
+    size_t end = input.find(delimiter.c_string());
+
+    while (end != std::string::npos) {
+      item = input.substr(start, end - start);
+      if (!removeEmptyEntries || item.size() > 0) {
+        tokens.push_back(item);
+      }
+      start = end + delimiter.size();
+      end = input.find(delimiter.c_string(), start);
+    }
+
+    item = input.substr(start);
+    if (removeEmptyEntries && item.size() == 0) {
+      return tokens;
+    }
+
+    tokens.push_back(input.substr(start));
+    return tokens;
+  }
+
+  static std::string join(string separator, const vector<string>& values);
 };
 
 inline std::string to_std_string(const string& str) { return str.std_string(); }
@@ -213,6 +267,22 @@ class vector {
   }
 };
 
+inline std::string string::join(string separator, const vector<string>& values)
+{
+    size_t count = values.size();
+    if (count == 0) {
+        return std::string();
+    }
+    std::string retVal;
+    for (size_t i = 0; i < count; i++) {
+        retVal += values[i].std_string();
+        if ((i + 1) < count) {
+            retVal += separator.std_string();
+        }
+    }
+    return retVal;
+}
+
 template <typename K, typename V>
 class pair {
  public: