From 18a05d269516a5e33d8460291c2f93e73d95adce Mon Sep 17 00:00:00 2001
From: zhangmeng <775834166@qq.com>
Date: 星期二, 26 十二月 2023 10:45:31 +0800
Subject: [PATCH] GetYUV format is NV12

---
 csrc/worker/decoder.cpp |  203 +++++++++++++++++++-------------------------------
 1 files changed, 79 insertions(+), 124 deletions(-)

diff --git a/csrc/worker/decoder.cpp b/csrc/worker/decoder.cpp
index 4211b41..4d5a3b7 100644
--- a/csrc/worker/decoder.cpp
+++ b/csrc/worker/decoder.cpp
@@ -3,8 +3,8 @@
 #include "../ffmpeg/bridge/cvbridge.hpp"
 #include "../ffmpeg/format/FormatIn.hpp"
 #include "../ffmpeg/data/CodedData.hpp"
-#include "../ffmpeg/data/FrameData.hpp"
 #include "../ffmpeg/log/log.hpp"
+#include "../common.hpp"
 
 extern "C"{
 #include <libavformat/avformat.h>
@@ -18,39 +18,15 @@
 
 namespace cffmpeg_wrap
 {
-    decoder::decoder(ffwrapper::FormatIn *dec, const int w, const int h, const int f)
-    :conv_(NULL)
-    ,conv_w_(w)
-    ,conv_h_(h)
-    ,conv_flag_(f)
-    ,decRef_(dec)
-    ,thread_(nullptr)
-    ,stop_{false}
+    decoder::decoder(ffwrapper::FormatIn *dec)
+    :decRef_(dec)
+    ,next_idx_(-1)
     {}
     
     decoder::~decoder(){
-        if (thread_){
-            stop_.store(true);
-            thread_->join();
-        }
-
-        if (conv_){
-            delete conv_;
-        }
-
         
-        {
-            std::lock_guard<std::mutex> l(mutex_pkt_);
-            list_pkt_.clear();
-        }
-
-        {
-            std::lock_guard<std::mutex> l(mutex_pic_);
-            for(auto &i : list_pic_){
-                free(i.data);
-            }
-            list_pic_.clear();
-        }
+        std::lock_guard<std::mutex> l(mutex_pkt_);
+        list_pkt_.clear();
     }
 
     int decoder::initDecoder(){
@@ -60,17 +36,6 @@
                 
             bool flag = true;
             flag = decRef_->openCodec(NULL);
-            auto dec_ctx = decRef_->getCodecContext();
-            if(conv_){
-                delete conv_;
-                conv_ = NULL;
-            }
-            conv_w_ = conv_w_ == 0 || conv_w_ > dec_ctx->width ? dec_ctx->width : conv_w_;
-            conv_h_ = conv_h_ == 0 || conv_h_ > dec_ctx->height ? dec_ctx->height : conv_h_;
-            AVPixelFormat pix_fmt = AV_PIX_FMT_BGR24;
-            conv_ = new cvbridge(
-                    dec_ctx->width, dec_ctx->height, dec_ctx->pix_fmt,
-                    conv_w_, conv_h_, pix_fmt, conv_flag_);
 
             if (!flag){
                 logIt("FormatIn openCodec Failed!");
@@ -80,108 +45,98 @@
         return 0;
     }
 
-    int decoder::saveFrame(AVFrame *frame, int64_t &id){
-        //缂撳瓨鏁版嵁
-        BGR24 pic;
-        AVFrame *frm = frame;
-        pic.w = conv_w_;
-        pic.h = conv_h_;
-        unsigned char *picData = (unsigned char*)malloc(pic.w * pic.h * 3);
-        conv_->copyPicture(picData, frm);
-        pic.data = picData;
-        pic.id = id;
-        std::lock_guard<std::mutex> l(mutex_pic_);
-        while(list_pic_.size() > 50){
-            for(int i = 0; i < 12; i++){
-                auto t = list_pic_.front();
-                free(t.data);
-                list_pic_.pop_front();
-            }
+    int decoder::SetFrame(const CPacket &pkt){
+        auto data = pkt.data;
+
+        if (!data) return -10;
+        if (!decRef_->isVideoPkt(&data->getAVPacket())) return -20;
+        
+        if (decRef_->getCodecContext() == NULL){
+            if (initDecoder() != 0) return -30;
         }
-        list_pic_.emplace_back(pic);
-        return list_pic_.size();
+
+        std::lock_guard<std::mutex> l(mutex_pkt_);
+        if (data->getAVPacket().flags & AV_PKT_FLAG_KEY){
+            list_pkt_.clear();
+        }
+        list_pkt_.push_back(pkt);
+
+        return list_pkt_.size();
     }
 
-    void decoder::Start(){
-        if (thread_) return;
-        thread_.reset(new std::thread([&]{
-            if (initDecoder() != 0) {
-                return;
+    void decoder::GetFrame(unsigned char **data, int *w, int *h, int *format, int *length, int64_t *id){
+        *data = NULL;
+        *length = 0;
+
+        AVFrame *frame = NULL;
+
+        {
+            std::lock_guard<std::mutex> l(mutex_pkt_);
+            if (list_pkt_.empty()) return;
+            auto check = list_pkt_.front();
+            if (check.id > next_idx_){
+                next_idx_ = -1;
             }
-
-            while(!stop_.load()){
-
-                std::unique_lock<std::mutex> locker(mutex_pkt_);
-                cv_.wait(locker, [&]{
-                    return !list_pkt_.empty() || stop_.load();
-                });
-                if (stop_.load()){
-                    break;
+            
+            for (auto &i : list_pkt_){
+                if (i.id < next_idx_){
+                    continue;
                 }
 
-                auto pkt = list_pkt_.front();
-                list_pkt_.pop_front();
+                *id = i.v_id;
+                auto data = i.data;
 
-                AVFrame *frame = av_frame_alloc();
-                AVPacket np(pkt.data->getAVPacket());
-                av_copy_packet(&np, &pkt.data->getAVPacket());
-
-                auto ret = decRef_->decode(frame, &np);
+                AVFrame *frm = av_frame_alloc();
+                AVPacket np(data->getAVPacket());
+                av_copy_packet(&np, &data->getAVPacket());
+                auto ret = decRef_->decode(frm, &np);
                 av_packet_unref(&np);
-                
                 if (ret == 0){
-                    saveFrame(frame, pkt.id);
+                    next_idx_ = i.id + 1;
+                    if (frame) {av_frame_free(&frame); frame = NULL;}
+                    frame = frm;
+                }else {
+                    av_frame_free(&frm);
                 }
-                av_frame_free(&frame);
             }
+        }
+        if (!frame) return;
 
-        }));
-    }
+        int pix_fmt = frame->format;
+        int width = frame->width;
+        int height = frame->height;
 
-    int decoder::SetFrame(std::shared_ptr<ffwrapper::CodedData> data, int64_t &id){
+        if (pix_fmt != AV_PIX_FMT_NV12){
 
-        if (!data) return -1;
-        if (decRef_->isAudioPkt(&data->getAVPacket())) return -2;
-        
-        // if (!thread_){
-        //     if (initDecoder() != 0) return -3;
-        //     Start();
-        // }
+            cvbridge* bridge = new cvbridge(width, height, pix_fmt,
+                width, height, AV_PIX_FMT_NV12);
+            AVFrame* nv12 = bridge->convert2Frame(frame);
+            av_frame_free(&frame);
+            frame = nv12;
+            delete bridge;
 
-        // std::lock_guard<std::mutex> l(mutex_pkt_);
-        // list_pkt_.push_back({data, id});
-        // cv_.notify_one();
-        // return list_pkt_.size();
-
-        if (!conv_){
-            if (initDecoder() != 0) return -3;
+            // finale = (uint8_t*)malloc(len);
+            // unsigned char* SrcU = origin + width * height;
+            // unsigned char* SrcV = SrcU + width * height / 4 ;
+            // unsigned char* DstU = finale + width * height;
+            // memcpy(finale, origin, width * height);
+            // int i = 0;
+            // for( i = 0 ; i < width * height / 4 ; i++ ){
+            //     *(DstU++) = *(SrcU++);
+            //     *(DstU++) = *(SrcV++);
+            // }
+            // free(origin);
         }
 
-        AVFrame *frame = av_frame_alloc();
-        AVPacket np(data->getAVPacket());
-        av_copy_packet(&np, &data->getAVPacket());
-        auto ret = decRef_->decode(frame, &np);
-        av_packet_unref(&np);
-        
-        if (ret == 0){
-            saveFrame(frame, id);
-        }
+        int len = 0;
+        uint8_t* finale = cvbridge::extractFrame(frame, &len);
         av_frame_free(&frame);
 
-    }
-
-    void decoder::GetFrame(unsigned char **data, int *w, int *h, int64_t *id){
-        std::lock_guard<std::mutex> l(mutex_pic_);
-        if(list_pic_.empty()){
-            *data = NULL;
-            *w = 0;
-            *h = 0;
-            return;
-        }
-        auto p = list_pic_.front();
-        *data = p.data; *w = p.w; *h = p.h;
-        *id = p.id;
-        list_pic_.pop_front();
+        *data = finale;
+        *w = width;
+        *h = height;
+        *format = pix_fmt;
+        *length = len;
     }
 
 } // namespace cffmpeg_wrap

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