From 0e021985f483e593c6ef872b8bcbe299566c7dd2 Mon Sep 17 00:00:00 2001
From: chenshijun <csj_sky@126.com>
Date: 星期二, 03 十二月 2019 15:32:18 +0800
Subject: [PATCH] 增加获取国标图片接口
---
csrc/ffmpeg/format/FormatIn.cpp | 83 +++++++++++++++++++++++++++--------------
1 files changed, 54 insertions(+), 29 deletions(-)
diff --git a/csrc/ffmpeg/format/FormatIn.cpp b/csrc/ffmpeg/format/FormatIn.cpp
index 6313eda..59f3f23 100644
--- a/csrc/ffmpeg/format/FormatIn.cpp
+++ b/csrc/ffmpeg/format/FormatIn.cpp
@@ -38,35 +38,37 @@
FormatIn::~FormatIn()
{
- if(io_ctx_){
- if(read_io_buff_){
- // av_free(read_io_buff_);
- read_io_buff_ = NULL;
- }
- avio_context_free(&io_ctx_);
- io_ctx_ = NULL;
- }
if(ctx_){
- avformat_close_input(&ctx_);
- avformat_free_context(ctx_);
+ if (!(ctx_->flags & AVFMT_FLAG_CUSTOM_IO)){
+ avformat_close_input(&ctx_);
+ }else{
+ avformat_free_context(ctx_);
+ }
+
ctx_ = NULL;
if(dec_ctx_){
avcodec_close(dec_ctx_);
dec_ctx_ = NULL;
}
+
}
+
if (handle_gb28181){
delete handle_gb28181;
}
+ if(read_io_buff_){
+ av_free(read_io_buff_);
+ read_io_buff_ = NULL;
+ }
+ if(io_ctx_){
+ avio_context_free(&io_ctx_);
+ io_ctx_ = NULL;
+ }
+
}
////////////////////////////////////////////////////////////////////////
int FormatIn::openWithCustomIO(void *opaque, read_packet fn, AVDictionary **options/*=NULL*/){
- ctx_ = avformat_alloc_context();
- if(!ctx_){
- logIt("open with custom io create format error\n");
- return -1;
- }
read_io_buff_ = (uint8_t*)av_malloc(read_io_buff_size_);
if(!read_io_buff_){
logIt("open with custom io alloc read io buff error\n");
@@ -78,12 +80,18 @@
logIt("open with custom io create custom avio error\n");
return -1;
}
+
+ ctx_ = avformat_alloc_context();
+ if(!ctx_){
+ logIt("open with custom io create format error\n");
+ return -1;
+ }
+
ctx_->pb = io_ctx_;
- auto err = av_probe_input_buffer(ctx_->pb, &ctx_->iformat, NULL, NULL, 0, read_io_buff_size_);
+ auto err = av_probe_input_buffer(ctx_->pb, &ctx_->iformat, NULL, NULL, 0, 0);
if(err != 0){
- logIt("open with custom io prob input buffer error:%d\n", err);
- logIt("failed:%s", getAVErrorDesc(err).c_str());
+ logIt("open with custom io prob input buffer error:%d err: %s\n", err, getAVErrorDesc(err).c_str());
return -1;
}
@@ -106,9 +114,10 @@
int ret = openWithCustomIO(handle_gb28181, handle_gb28181->readData, options);
if(ret < 0){
logIt("do openWithCustomIO failed:%d",ret);
- }
+ }else{
+ ret = avformat_open_input(&ctx_, "", NULL, options);
+ }
- ret = avformat_open_input(&ctx_, "", NULL, options);
// if(ret < 0){
// logIt("open %s failed:%s",filename,
// getAVErrorDesc(ret).c_str());
@@ -139,28 +148,39 @@
return false;
}
- logIt("there are %d stream", ctx_->nb_streams);
+ // logIt("there are %d stream", ctx_->nb_streams);
for (int i = 0; i < ctx_->nb_streams; ++i)
{
auto type = ctx_->streams[i]->codecpar->codec_type;
+ logIt("there are %d stream, stream %d, type %d", ctx_->nb_streams, i, type);
+
if (type == AVMEDIA_TYPE_VIDEO){
vs_idx_ = i;
auto in = ctx_->streams[i];
- if(in->avg_frame_rate.num >=1 && in->avg_frame_rate.den >= 1){
- fps_ = av_q2d(in->avg_frame_rate);
- }else if(in->r_frame_rate.num >=1 && in->r_frame_rate.den >= 1){
+ if(in->r_frame_rate.num >=1 && in->r_frame_rate.den >= 1){
fps_ = av_q2d(in->r_frame_rate);
- }
- logIt("in stream fps %f, time_base: %d : %d", fps_, in->time_base.num, in->time_base.den);
+ }else if(in->avg_frame_rate.num >=1 && in->avg_frame_rate.den >= 1){
+ fps_ = av_q2d(in->avg_frame_rate);
+ }
+ logIt("in stream video fps %f, time_base: %d : %d", fps_, in->time_base.num, in->time_base.den);
}
if (type == AVMEDIA_TYPE_AUDIO){
- as_idx_ = i;
+ auto in = ctx_->streams[i];
+ logIt("in stream audio %d time_base: %d : %d", in->codecpar->codec_id, in->time_base.num, in->time_base.den);
+ if (in->codecpar->codec_id == AV_CODEC_ID_AAC)
+ as_idx_ = i;
+ else
+ logIt("record not support audio codec: %d", in->codecpar->codec_id);
}
}
return true;
+ }
+
+ const bool FormatIn::IsHEVC()const{
+ return ctx_->streams[vs_idx_]->codecpar->codec_id == AV_CODEC_ID_HEVC;
}
bool FormatIn::openCodec(AVDictionary **options){
@@ -195,7 +215,6 @@
continue;
}else{
av_dict_set(&avdic, "gpu", std::to_string(idle_gpu).c_str(), 0);
- // av_dict_set(&avdic, "gpu", std::to_string(2).c_str(), 0);
}
}else{
dec = avcodec_find_decoder(codecpar->codec_id);
@@ -282,9 +301,15 @@
return false;
}
+ bool FormatIn::notVideoAudio(AVPacket *pkt){
+ return !isVideoPkt(pkt) && !isAudioPkt(pkt);
+ }
+
int FormatIn::readPacket(AVPacket *pkt_out){
- return av_read_frame(ctx_, pkt_out);
+ auto flag = av_read_frame(ctx_, pkt_out);
+
+ return flag;
}
int FormatIn::decode(AVFrame* frame, AVPacket *pkt){
--
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