From f93ee1a42e8c47e472332287b7350b66a6b0fa11 Mon Sep 17 00:00:00 2001
From: zhangmeng <775834166@qq.com>
Date: 星期五, 24 七月 2020 18:28:57 +0800
Subject: [PATCH] 保存触发id之后的视频作为触发视频
---
csrc/worker/decoder.cpp | 164 +++++++++++++++++++++++++++++-------------------------
1 files changed, 87 insertions(+), 77 deletions(-)
diff --git a/csrc/worker/decoder.cpp b/csrc/worker/decoder.cpp
index ce5f631..5e8a7c9 100644
--- a/csrc/worker/decoder.cpp
+++ b/csrc/worker/decoder.cpp
@@ -4,6 +4,7 @@
#include "../ffmpeg/format/FormatIn.hpp"
#include "../ffmpeg/data/CodedData.hpp"
#include "../ffmpeg/log/log.hpp"
+#include "../common.hpp"
extern "C"{
#include <libavformat/avformat.h>
@@ -17,27 +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)
+ decoder::decoder(ffwrapper::FormatIn *dec)
+ :decRef_(dec)
+ ,next_idx_(-1)
{}
decoder::~decoder(){
-
- if (conv_){
- delete conv_;
- }
-
- {
- 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(){
@@ -47,17 +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!");
@@ -67,61 +45,93 @@
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;
+ }
+
+ 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::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;
+ }
+
+ for (auto &i : list_pkt_){
+ if (i.id < next_idx_){
+ continue;
+ }
+
+ *id = i.v_id;
+ auto data = i.data;
+
+ 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){
+ next_idx_ = i.id + 1;
+ if (frame) {av_frame_free(&frame); frame = NULL;}
+ frame = frm;
+ }
}
}
- list_pic_.emplace_back(pic);
- return list_pic_.size();
- }
+ if (!frame) return;
- int decoder::SetFrame(std::shared_ptr<ffwrapper::CodedData> data, int64_t &id){
+ int pix_fmt = frame->format;
+ int width = frame->width;
+ int height = frame->height;
+ int len = 0;
- if (!data) return -1;
- if (!decRef_->isVideoPkt(&data->getAVPacket())) return -2;
-
- if (!conv_){
- if (initDecoder() != 0) return -3;
- }
-
- 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);
- }
+ uint8_t *origin = cvbridge::extractFrame(frame, &len);
av_frame_free(&frame);
- }
+ if (!origin) return;
- 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;
+ uint8_t *finale = NULL;
+ if (pix_fmt != AV_PIX_FMT_NV12){
+ 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);
+ }else{
+ finale = origin;
}
- 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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