Combine Fu-A subframes into complete h264 frame

application/remote_desk/remote_desk_client/remote_desk_client.cpp

@@ -100,7 +100,7 @@ inline int ProcessMouseKeyEven(SDL_Event &ev) {
 
 void GuestReceiveBuffer(const char *data, size_t size, const char *user_id,
                         size_t user_id_size) {
-  std::cout << "Receive: [" << user_id << "] " << std::endl;
+  // std::cout << "Receive: [" << user_id << "] " << std::endl;
   memcpy(dst_buffer, data, size);
 
   SDL_Event event;

src/frame/frame.cpp

@@ -0,0 +1,58 @@
+#include "frame.h"
+
+#include <string>
+
+VideoFrame::VideoFrame() {}
+
+VideoFrame::VideoFrame(const uint8_t *buffer, size_t size) {
+  buffer_ = new uint8_t[size];
+  memcpy(buffer_, buffer, size);
+  size_ = size;
+}
+
+VideoFrame::VideoFrame(const VideoFrame &video_frame) {
+  if (video_frame.size_ > 0) {
+    buffer_ = new uint8_t[video_frame.size_];
+    memcpy(buffer_, video_frame.buffer_, video_frame.size_);
+    size_ = video_frame.size_;
+  }
+}
+
+VideoFrame::VideoFrame(VideoFrame &&video_frame)
+    : buffer_((uint8_t *)std::move(video_frame.buffer_)),
+      size_(video_frame.size_) {
+  video_frame.buffer_ = nullptr;
+  video_frame.size_ = 0;
+}
+
+VideoFrame &VideoFrame::operator=(const VideoFrame &video_frame) {
+  if (&video_frame != this) {
+    if (buffer_) {
+      delete buffer_;
+      buffer_ = nullptr;
+    }
+    buffer_ = new uint8_t[video_frame.size_];
+    memcpy(buffer_, video_frame.buffer_, video_frame.size_);
+    size_ = video_frame.size_;
+  }
+  return *this;
+}
+
+VideoFrame &VideoFrame::operator=(VideoFrame &&video_frame) {
+  if (&video_frame != this) {
+    buffer_ = std::move(video_frame.buffer_);
+    video_frame.buffer_ = nullptr;
+    size_ = video_frame.size_;
+    video_frame.size_ = 0;
+  }
+  return *this;
+}
+
+VideoFrame::~VideoFrame() {
+  if (buffer_) {
+    delete buffer_;
+    buffer_ = nullptr;
+  }
+
+  size_ = 0;
+}

src/frame/frame.h

@@ -0,0 +1,28 @@
+#ifndef _FRAME_H_
+#define _FRAME_H_
+
+#include <stdint.h>
+
+class VideoFrame {
+ public:
+  VideoFrame();
+  VideoFrame(const uint8_t *buffer, size_t size);
+  VideoFrame(const VideoFrame &video_frame);
+  VideoFrame(VideoFrame &&video_frame);
+  VideoFrame &operator=(const VideoFrame &video_frame);
+  VideoFrame &operator=(VideoFrame &&video_frame);
+
+  ~VideoFrame();
+
+ public:
+  const uint8_t *Buffer() { return buffer_; }
+  const size_t Size() { return size_; }
+
+ private:
+  size_t width_ = 0;
+  size_t height_ = 0;
+  uint8_t *buffer_ = nullptr;
+  size_t size_ = 0;
+};
+
+#endif

src/pc/peer_connection.cpp

@@ -45,7 +45,6 @@ int PeerConnection::Init(PeerConnectionParams params,
   on_receive_ice_msg_ = [this](const char *data, size_t size,
                                const char *user_id, size_t user_id_size) {
     int num_frame_returned = Decode((uint8_t *)data, size);
-
     uint32_t width = 0;
     uint32_t height = 0;
     uint32_t frame_size = 0;

src/rtp/rtp_packet.cpp

@@ -4,6 +4,17 @@
 
 #include "log.h"
 
+inline void RtpPacket::TryToDecodeH264RtpPacket(uint8_t *buffer) {
+  if (PAYLOAD_TYPE::H264 == NAL_UNIT_TYPE(buffer[1] & 0x7f)) {
+    nal_unit_type_ = NAL_UNIT_TYPE(buffer[12] & 0x1F);
+    if (NAL_UNIT_TYPE::NALU == nal_unit_type_) {
+      DecodeH264Nalu();
+    } else if (NAL_UNIT_TYPE::FU_A == nal_unit_type_) {
+      DecodeH264Fua();
+    }
+  }
+}
+
 RtpPacket::RtpPacket() : buffer_(new uint8_t[DEFAULT_MTU]), size_(DEFAULT_MTU) {
   memset(buffer_, 0, DEFAULT_MTU);
 }
@@ -13,6 +24,8 @@ RtpPacket::RtpPacket(const uint8_t *buffer, size_t size) {
     buffer_ = new uint8_t[size];
     memcpy(buffer_, buffer, size);
     size_ = size;
+
+    TryToDecodeH264RtpPacket(buffer_);
   }
 }
 
@@ -21,6 +34,8 @@ RtpPacket::RtpPacket(const RtpPacket &rtp_packet) {
     buffer_ = new uint8_t[rtp_packet.size_];
     memcpy(buffer_, rtp_packet.buffer_, rtp_packet.size_);
     size_ = rtp_packet.size_;
+
+    TryToDecodeH264RtpPacket(buffer_);
   }
 }
 
@@ -29,6 +44,8 @@ RtpPacket::RtpPacket(RtpPacket &&rtp_packet)
       size_(rtp_packet.size_) {
   rtp_packet.buffer_ = nullptr;
   rtp_packet.size_ = 0;
+
+  TryToDecodeH264RtpPacket(buffer_);
 }
 
 RtpPacket &RtpPacket::operator=(const RtpPacket &rtp_packet) {
@@ -40,6 +57,8 @@ RtpPacket &RtpPacket::operator=(const RtpPacket &rtp_packet) {
     buffer_ = new uint8_t[rtp_packet.size_];
     memcpy(buffer_, rtp_packet.buffer_, rtp_packet.size_);
     size_ = rtp_packet.size_;
+
+    TryToDecodeH264RtpPacket(buffer_);
   }
   return *this;
 }
@@ -50,6 +69,8 @@ RtpPacket &RtpPacket::operator=(RtpPacket &&rtp_packet) {
     rtp_packet.buffer_ = nullptr;
     size_ = rtp_packet.size_;
     rtp_packet.size_ = 0;
+
+    TryToDecodeH264RtpPacket(buffer_);
   }
   return *this;
 }
@@ -292,7 +313,9 @@ size_t RtpPacket::DecodeH264Nalu(uint8_t *payload) {
 
   payload_size_ = size_ - (13 + payload_offset);
   payload_ = buffer_ + 13 + payload_offset;
-  memcpy(payload, payload_, payload_size_);
+  if (payload) {
+    memcpy(payload, payload_, payload_size_);
+  }
   return payload_size_;
 }
 
@@ -341,6 +364,8 @@ size_t RtpPacket::DecodeH264Fua(uint8_t *payload) {
 
   payload_size_ = size_ - (14 + payload_offset);
   payload_ = buffer_ + 14 + payload_offset;
-  memcpy(payload, payload_, payload_size_);
+  if (payload) {
+    memcpy(payload, payload_, payload_size_);
+  }
   return payload_size_;
 }

src/rtp/rtp_packet.h

@@ -64,6 +64,7 @@
 #define DEFAULT_MTU 1500
 #define MAX_NALU_LEN 1400
 typedef enum { H264 = 96, OPUS = 97, USER_DEFINED = 127 } PAYLOAD_TYPE;
+typedef enum { UNKNOWN = 0, NALU = 1, FU_A = 28, FU_B = 29 } NAL_UNIT_TYPE;
 
 class RtpPacket {
  public:
@@ -133,8 +134,8 @@ class RtpPacket {
   const uint8_t *EncodeH264Nalu(uint8_t *payload, size_t payload_size);
   const uint8_t *EncodeH264Fua(uint8_t *payload, size_t payload_size);
   size_t Decode(uint8_t *payload);
-  size_t DecodeH264Nalu(uint8_t *payload);
+  size_t DecodeH264Nalu(uint8_t *payload = nullptr);
-  size_t DecodeH264Fua(uint8_t *payload);
+  size_t DecodeH264Fua(uint8_t *payload = nullptr);
 
  public:
   // Get Header
@@ -154,10 +155,18 @@ class RtpPacket {
   const uint8_t *Payload() { return payload_; };
   const size_t PayloadSize() { return payload_size_; }
 
- public:
+  // Entire RTP buffer
   const uint8_t *Buffer() { return buffer_; }
   const size_t Size() { return size_; }
 
+  // NAL
+  const NAL_UNIT_TYPE NalUnitType() { return nal_unit_type_; }
+  const bool FuAStart() { return fu_header_.start; }
+  const bool FuAEnd() { return fu_header_.end; }
+
+ private:
+  inline void TryToDecodeH264RtpPacket(uint8_t *buffer);
+
  private:
   // Header
   uint32_t version_ = 0;
@@ -184,6 +193,9 @@ class RtpPacket {
   // Entire RTP buffer
   uint8_t *buffer_ = nullptr;
   size_t size_ = 0;
+
+  // NAL
+  NAL_UNIT_TYPE nal_unit_type_ = NAL_UNIT_TYPE::UNKNOWN;
 };
 
 #endif

src/rtp/rtp_video_receiver.cpp

@@ -0,0 +1,76 @@
+#include "rtp_video_receiver.h"
+
+#include "log.h"
+
+#define NV12_BUFFER_SIZE (1280 * 720 * 3 / 2)
+
+RtpVideoReceiver::RtpVideoReceiver() {}
+
+RtpVideoReceiver::~RtpVideoReceiver() {}
+
+void RtpVideoReceiver::InsertRtpPacket(RtpPacket& rtp_packet) {
+  if (NAL_UNIT_TYPE::NALU == rtp_packet.NalUnitType()) {
+    // compelete_video_frame_queue_.push(
+    //     VideoFrame(rtp_packet.Payload(), rtp_packet.Size()));
+    if (on_receive_complete_frame_) {
+      on_receive_complete_frame_(
+          VideoFrame(rtp_packet.Payload(), rtp_packet.Size()));
+    }
+  } else if (NAL_UNIT_TYPE::FU_A == rtp_packet.NalUnitType()) {
+    incomplete_frame_list_[rtp_packet.SequenceNumber()] = rtp_packet;
+    bool complete = CheckIsFrameCompleted(rtp_packet);
+  }
+}
+
+bool RtpVideoReceiver::CheckIsFrameCompleted(RtpPacket& rtp_packet) {
+  if (rtp_packet.FuAEnd()) {
+    size_t complete_frame_size = 0;
+    uint16_t end_seq = rtp_packet.SequenceNumber();
+    if (incomplete_frame_list_.size() == end_seq) {
+      return true;
+    }
+
+    while (end_seq--) {
+      auto it = incomplete_frame_list_.find(end_seq);
+      complete_frame_size += it->second.PayloadSize();
+      if (it == incomplete_frame_list_.end()) {
+        return false;
+      } else if (!it->second.FuAStart()) {
+        continue;
+      } else if (it->second.FuAStart()) {
+        if (!nv12_data_) {
+          nv12_data_ = new uint8_t[NV12_BUFFER_SIZE];
+        }
+
+        size_t complete_frame_size = 0;
+        for (size_t start = it->first; start <= rtp_packet.SequenceNumber();
+             start++) {
+          memcpy(nv12_data_ + complete_frame_size,
+                 incomplete_frame_list_[start].Payload(),
+                 incomplete_frame_list_[start].PayloadSize());
+
+          complete_frame_size += incomplete_frame_list_[start].PayloadSize();
+          incomplete_frame_list_.erase(start);
+        }
+
+        // compelete_video_frame_queue_.push(
+        //     VideoFrame(nv12_data_, complete_frame_size));
+
+        // LOG_ERROR("Size of compelete_video_frame_queue_ [{}]",
+        //           compelete_video_frame_queue_.size());
+
+        if (on_receive_complete_frame_) {
+          on_receive_complete_frame_(
+              VideoFrame(nv12_data_, complete_frame_size));
+        }
+        return true;
+      } else {
+        LOG_WARN("What happened?")
+        return false;
+      }
+    }
+
+    return true;
+  }
+  return false;
+}

src/rtp/rtp_video_receiver.h

@@ -0,0 +1,37 @@
+#ifndef _RTP_VIDEO_RECEIVER_H_
+#define _RTP_VIDEO_RECEIVER_H_
+
+#include <functional>
+#include <map>
+#include <queue>
+
+#include "frame.h"
+#include "rtp_video_session.h"
+
+class RtpVideoReceiver {
+ public:
+  RtpVideoReceiver();
+  ~RtpVideoReceiver();
+
+ public:
+  void InsertRtpPacket(RtpPacket& rtp_packet);
+
+  void SetOnReceiveCompleteFrame(
+      std::function<void(VideoFrame&)> on_receive_complete_frame) {
+    on_receive_complete_frame_ = on_receive_complete_frame;
+  }
+
+ private:
+  bool CheckIsFrameCompleted(RtpPacket& rtp_packet);
+
+  //  private:
+  //   void OnReceiveFrame(uint8_t* payload) {}
+
+ private:
+  std::map<uint16_t, RtpPacket> incomplete_frame_list_;
+  std::queue<VideoFrame> compelete_video_frame_queue_;
+  uint8_t* nv12_data_ = nullptr;
+  std::function<void(VideoFrame&)> on_receive_complete_frame_ = nullptr;
+};
+
+#endif

src/rtp/rtp_video_session.cpp

@@ -1,4 +1,4 @@
-#include "rtp_session.h"
+#include "rtp_video_session.h"
 
 #include <chrono>
 
@@ -9,14 +9,14 @@
 #define FU_A 28
 #define FU_B 29
 
-RtpSession ::RtpSession(PAYLOAD_TYPE payload_type)
+RtpVideoSession ::RtpVideoSession(PAYLOAD_TYPE payload_type)
     : version_(RTP_VERSION),
       has_padding_(false),
       has_extension_(false),
       payload_type_(payload_type),
       sequence_number_(0) {}
 
-RtpSession ::~RtpSession() {
+RtpVideoSession ::~RtpVideoSession() {
   if (extension_data_) {
     delete extension_data_;
     extension_data_ = nullptr;
@@ -28,8 +28,8 @@ RtpSession ::~RtpSession() {
   // }
 }
 
-void RtpSession::Encode(uint8_t* buffer, size_t size,
+void RtpVideoSession::Encode(uint8_t* buffer, size_t size,
-                        std::vector<RtpPacket>& packets) {
+                             std::vector<RtpPacket>& packets) {
   // if (!rtp_packet_) {
   //   rtp_packet_ = new RtpPacket();
   // }
@@ -118,7 +118,7 @@ void RtpSession::Encode(uint8_t* buffer, size_t size,
   }
 }
 
-size_t RtpSession::Decode(RtpPacket& packet, uint8_t* payload) {
+size_t RtpVideoSession::Decode(RtpPacket& packet, uint8_t* payload) {
   // if ((packet.Buffer()[13] >> 6) & 0x01) {
   //   LOG_ERROR("End bit!!!!!!!!!!!!!!!");
   // }

src/rtp/rtp_video_session.h

@@ -1,5 +1,5 @@
-#ifndef _RTP_SESSION_H_
+#ifndef _RTP_VIDEO_SESSION_H_
-#define _RTP_SESSION_H_
+#define _RTP_VIDEO_SESSION_H_
 
 #include <stdint.h>
 
@@ -7,17 +7,18 @@
 
 #include "rtp_packet.h"
 
-class RtpSession
+class RtpVideoSession {
-
-{
  public:
-  RtpSession(PAYLOAD_TYPE payload_type);
+  RtpVideoSession(PAYLOAD_TYPE payload_type);
-  ~RtpSession();
+  ~RtpVideoSession();
 
  public:
   void Encode(uint8_t* buffer, size_t size, std::vector<RtpPacket>& packets);
   size_t Decode(RtpPacket& packet, uint8_t* payload);
 
+  //  protected:
+  //   void OnReceiveFrame(uint8_t* payload) = 0;
+
  private:
   uint32_t version_ = 0;
   bool has_padding_ = false;

src/transmission/ice_transmission.cpp

@@ -37,9 +37,14 @@ IceTransmission::~IceTransmission() {
     kcp_update_thread_ = nullptr;
   }
 
-  if (video_rtp_session_) {
+  if (rtp_video_session_) {
-    delete video_rtp_session_;
+    delete rtp_video_session_;
-    video_rtp_session_ = nullptr;
+    rtp_video_session_ = nullptr;
+  }
+
+  if (rtp_video_receiver_) {
+    delete rtp_video_receiver_;
+    rtp_video_receiver_ = nullptr;
   }
 
   if (rtp_payload_) {
@@ -54,76 +59,16 @@ IceTransmission::~IceTransmission() {
 }
 
 int IceTransmission::InitIceTransmission(std::string &ip, int port) {
-  kcp_update_thread_ = new std::thread([this]() {
+  rtp_video_session_ = new RtpVideoSession(PAYLOAD_TYPE::H264);
-    int ret = 0;
+  rtp_video_receiver_ = new RtpVideoReceiver();
-    ikcpcb *kcp = ikcp_create(0x11223344, (void *)this);
+  rtp_video_receiver_->SetOnReceiveCompleteFrame(
-    ikcp_setoutput(
+      [this](VideoFrame &video_frame) -> void {
-        kcp, [](const char *buf, int len, ikcpcb *kcp, void *user) -> int {
+        LOG_ERROR("OnReceiveCompleteFrame {}", video_frame.Size());
-          IceTransmission *ice_transmission_obj =
+        on_receive_ice_msg_cb_((const char *)video_frame.Buffer(),
-              static_cast<IceTransmission *>(user);
+                               video_frame.Size(), remote_user_id_.data(),
-          return ice_transmission_obj->ice_agent_->Send(buf, len);
+                               remote_user_id_.size());
-        });
+      });
-    ikcp_wndsize(kcp, 2048, 2048);
-    ikcp_nodelay(kcp, 1, 20, 2, 1);
-    // ikcp_setmtu(kcp, 4000);
-    // kcp_->rx_minrto = 10;
-    // kcp_->fastresend = 1;
 
-    while (!kcp_stop_) {
-      auto clock = std::chrono::duration_cast<std::chrono::milliseconds>(
-                       std::chrono::system_clock::now().time_since_epoch())
-                       .count();
-
-      ikcp_update(kcp, clock);
-
-      if (!send_ringbuffer_.isEmpty()) {
-        // Data buffer;
-        RtpPacket buffer;
-        if (ikcp_waitsnd(kcp) <= kcp->snd_wnd * 2) {
-          send_ringbuffer_.pop(buffer);
-
-          ice_agent_->Send((const char *)buffer.Buffer(), buffer.Size());
-        }
-      }
-
-      if (!recv_ringbuffer_.isEmpty()) {
-        // RtpPacket packet;
-        recv_ringbuffer_.pop(pop_packet_);
-        if (!rtp_payload_) {
-          rtp_payload_ = new uint8_t[1400];
-        }
-        size_t rtp_payload_size =
-            video_rtp_session_->Decode(pop_packet_, rtp_payload_);
-
-        on_receive_ice_msg_cb_((const char *)rtp_payload_, rtp_payload_size,
-                               remote_user_id_.data(), remote_user_id_.size());
-      }
-
-      // int len = 0;
-      // int total_len = 0;
-      // while (1) {
-      //   len = ikcp_recv(kcp, kcp_complete_buffer_ + len, 400000);
-
-      //   total_len += len;
-
-      //   if (len <= 0) {
-      //     if (on_receive_ice_msg_cb_ && total_len > 0) {
-      //       LOG_ERROR("Receive size: {}", total_len);
-      //       on_receive_ice_msg_cb_(kcp_complete_buffer_, total_len,
-      //                              remote_user_id_.data(),
-      //                              remote_user_id_.size());
-      //     }
-      //     break;
-      //   }
-      // }
-
-      std::this_thread::sleep_for(std::chrono::milliseconds(1));
-    }
-
-    ikcp_release(kcp);
-  });
-
-  video_rtp_session_ = new RtpSession(PAYLOAD_TYPE::H264);
   ice_agent_ = new IceAgent(ip, port);
 
   ice_agent_->CreateIceAgent(
@@ -167,30 +112,12 @@ int IceTransmission::InitIceTransmission(std::string &ip, int port) {
           IceTransmission *ice_transmission_obj =
               static_cast<IceTransmission *>(user_ptr);
           if (ice_transmission_obj) {
-            // ice_transmission_obj->recv_ringbuffer_.push(
-            //     std::move(Data(data, size)));
-
             RtpPacket packet((uint8_t *)data, size);
-            ice_transmission_obj->recv_ringbuffer_.push(packet);
+            ice_transmission_obj->rtp_video_receiver_->InsertRtpPacket(packet);
-
-            // int ret = ikcp_input(ice_transmission_obj->kcp_, data, size);
-            // ikcp_update(ice_transmission_obj->kcp_, iclock());
-            // LOG_ERROR("ikcp_input {}", ret);
-            // auto clock =
-            //     std::chrono::duration_cast<std::chrono::milliseconds>(
-            //         std::chrono::system_clock::now().time_since_epoch())
-            //         .count();
-
-            // ikcp_update(ice_transmission_obj->kcp_, clock);
-
             // ice_transmission_obj->on_receive_ice_msg_cb_(
-            //     ice_transmission_obj->kcp_complete_buffer_, total_len,
+            //     (const char *)packet.Payload(), packet.PayloadSize(),
             //     ice_transmission_obj->remote_user_id_.data(),
             //     ice_transmission_obj->remote_user_id_.size());
-
-            // ice_transmission_obj->on_receive_ice_msg_cb_(
-            //     data, size, ice_transmission_obj->remote_user_id_.data(),
-            //     ice_transmission_obj->remote_user_id_.size());
           }
         }
       },
@@ -283,30 +210,15 @@ int IceTransmission::SendAnswer() {
 
 int IceTransmission::SendData(const char *data, size_t size) {
   if (JUICE_STATE_COMPLETED == state_) {
-    // send_ringbuffer_.push(std::move(Data(data, size)));
-
     std::vector<RtpPacket> packets;
 
-    // for (size_t num = 0, next_packet_size = 0; num * MAX_NALU_LEN < size;
+    rtp_video_session_->Encode((uint8_t *)data, size, packets);
-    //      num++) {
-    //   next_packet_size = size - num * MAX_NALU_LEN;
-    //   if (next_packet_size < MAX_NALU_LEN) {
-    //     video_rtp_session_->Encode((uint8_t *)(data + num * MAX_NALU_LEN),
-    //                                next_packet_size, packets);
-    //   } else {
-    //     video_rtp_session_->Encode((uint8_t *)(data + num * MAX_NALU_LEN),
-    //                                MAX_NALU_LEN, packets);
-    //   }
-    // }
-
-    video_rtp_session_->Encode((uint8_t *)data, size, packets);
-
     for (auto &packet : packets) {
-      send_ringbuffer_.push(packet);
+      ice_agent_->Send((const char *)packet.Buffer(), packet.Size());
     }
 
     // std::vector<RtpPacket> packets =
-    //     video_rtp_session_->Encode((uint8_t *)(data), size);
+    //     rtp_video_session_->Encode((uint8_t *)(data), size);
 
     // send_ringbuffer_.insert(send_ringbuffer_.end(), packets.begin(),
     //                         packets.end());

src/transmission/ice_transmission.h

@@ -7,8 +7,10 @@
 #include "ice_agent.h"
 #include "ringbuffer.h"
 #include "rtp_packet.h"
-#include "rtp_session.h"
+#include "rtp_video_receiver.h"
+#include "rtp_video_session.h"
 #include "ws_transmission.h"
+
 class IceTransmission {
  public:
   IceTransmission(
@@ -77,7 +79,8 @@ class IceTransmission {
   std::thread *kcp_update_thread_ = nullptr;
 
  private:
-  RtpSession *video_rtp_session_ = nullptr;
+  RtpVideoSession *rtp_video_session_ = nullptr;
+  RtpVideoReceiver *rtp_video_receiver_ = nullptr;
   uint8_t *rtp_payload_ = nullptr;
   RtpPacket pop_packet_;
 };

xmake.lua

@@ -47,10 +47,15 @@ target("inih")
 target("ringbuffer")
     set_kind("headeronly")
     add_includedirs("src/ringbuffer", {public = true})
+
+target("frame")
+    set_kind("static")
+    add_files("src/frame/*.cpp")
+    add_includedirs("src/frame", {public = true})
     
 target("rtp")
     set_kind("static")
-    add_deps("log")
+    add_deps("log", "frame")
     add_files("src/rtp/*.cpp")
     add_includedirs("src/rtp", {public = true})