#include "decoder.hpp"
|
|
#include "../ffmpeg/bridge/cvbridge.hpp"
|
#include "../ffmpeg/format/FormatIn.hpp"
|
#include "../ffmpeg/data/CodedData.hpp"
|
#include "../ffmpeg/log/log.hpp"
|
|
extern "C"{
|
#include <libavformat/avformat.h>
|
#include <libavutil/opt.h>
|
#include <libswscale/swscale.h>
|
#include <libavcodec/avcodec.h>
|
}
|
|
using namespace ffwrapper;
|
using namespace logif;
|
|
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(){
|
|
if (conv_){
|
delete conv_;
|
}
|
|
{
|
std::lock_guard<std::mutex> l(mutex_pic_);
|
for(auto &i : list_pic_){
|
free(i.data);
|
}
|
list_pic_.clear();
|
}
|
}
|
|
int decoder::initDecoder(){
|
if (!decRef_) return -1;
|
|
if(decRef_->getCodecContext() == NULL){
|
|
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!");
|
return -1;
|
}
|
}
|
return 0;
|
}
|
|
int decoder::saveFrame(AVFrame *frame, int64_t &id){
|
//缓存数据
|
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();
|
}
|
}
|
list_pic_.emplace_back(pic);
|
return list_pic_.size();
|
}
|
|
int decoder::SetFrame(std::shared_ptr<ffwrapper::CodedData> data, int64_t &id){
|
|
if (!data) return -1;
|
if (decRef_->isAudioPkt(&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);
|
}
|
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();
|
}
|
|
} // namespace cffmpeg_wrap
|
