From a8b447be656145c9ba2a2d8319a10ae8f726de1f Mon Sep 17 00:00:00 2001
From: zhangmeng <775834166@qq.com>
Date: 星期五, 09 十月 2020 18:20:46 +0800
Subject: [PATCH] h264 mp4
---
csrc/ffmpeg/format/FormatIn.cpp | 131 +++++++++++++++++++++++++++++++++++++++----
1 files changed, 119 insertions(+), 12 deletions(-)
diff --git a/csrc/ffmpeg/format/FormatIn.cpp b/csrc/ffmpeg/format/FormatIn.cpp
index 5ca0182..e69a1bc 100644
--- a/csrc/ffmpeg/format/FormatIn.cpp
+++ b/csrc/ffmpeg/format/FormatIn.cpp
@@ -2,6 +2,8 @@
#include <stdexcept>
#include <unistd.h>
+#include <stdlib.h>
+#include <time.h>
extern "C"{
#include <libavformat/avformat.h>
@@ -10,7 +12,8 @@
#include <libavutil/opt.h>
#include <libavutil/avassert.h>
#include <libavutil/imgutils.h>
-#include <libswscale/swscale.h>
+#include <libswscale/swscale.h>
+#include <libavutil/intreadwrite.h>
}
#include "../log/log.hpp"
@@ -28,17 +31,41 @@
,dec_ctx_(NULL)
,vs_idx_(-1)
,as_idx_(-1)
+ ,prop_(NULL)
,hw_accl_(hw)
,io_ctx_(NULL)
,read_io_buff_(NULL)
,read_io_buff_size_(32768)
,handle_gb28181(NULL)
,fps_(25.0)
+ ,bsf_h264(NULL)
+ ,bsf_hevc(NULL)
{}
+
+ FormatIn::FormatIn(const VideoProp &prop, bool hw/*=true*/)
+ :ctx_(NULL)
+ ,dec_ctx_(NULL)
+ ,vs_idx_(-1)
+ ,as_idx_(-1)
+ ,prop_(NULL)
+ ,hw_accl_(hw)
+ ,io_ctx_(NULL)
+ ,read_io_buff_(NULL)
+ ,read_io_buff_size_(32768)
+ ,handle_gb28181(NULL)
+ ,fps_(25.0)
+ ,bsf_h264(NULL)
+ ,bsf_hevc(NULL)
+ {
+ prop_ = new VideoProp;
+ *prop_ = prop;
+ }
FormatIn::~FormatIn()
{
logIt("free format in");
+ if (prop_) delete prop_;
+
if(dec_ctx_){
avcodec_close(dec_ctx_);
avcodec_free_context(&dec_ctx_);
@@ -49,17 +76,19 @@
avformat_close_input(&ctx_);
ctx_ = NULL;
}
-
+
if (handle_gb28181){
delete handle_gb28181;
}
if(io_ctx_){
av_freep(&io_ctx_->buffer);
- avio_context_free(&io_ctx_);
+ av_freep(&io_ctx_);
io_ctx_ = NULL;
}
+ if (bsf_h264) av_bsf_free(&bsf_h264);
+ if (bsf_hevc) av_bsf_free(&bsf_hevc);
}
////////////////////////////////////////////////////////////////////////
@@ -75,7 +104,7 @@
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");
@@ -127,7 +156,7 @@
const int ret = avformat_open_input(&ctx_, filename, NULL, options);
// if(ret < 0){
// logIt("open %s failed:%s",filename,
- // getAVErrorDesc(ret).c_str());
+ // getAVErrorDesc(ret).c_str());
// }
return ret;
@@ -138,7 +167,7 @@
const int ret = avformat_find_stream_info(ctx_, options);
if(ret < 0){
logIt("find %s stream info failed:%s",
- ctx_->filename,getAVErrorDesc(ret).c_str());
+ ctx_->filename,getAVErrorDesc(ret).c_str());
return false;
}
@@ -158,8 +187,21 @@
fps_ = av_q2d(in->r_frame_rate);
}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);
+ }
+ logIt("in stream video fps %f, time_base: %d : %d, size: %dx%d", fps_, in->time_base.num, in->time_base.den, in->codecpar->width, in->codecpar->height);
+
+ if (IsHEVC()){
+
+ }else if (isAVC1()) {
+ const AVBitStreamFilter *f = av_bsf_get_by_name("h264_mp4toannexb");
+ if (f){
+ if (av_bsf_alloc(f, &bsf_h264) >= 0){
+ if (avcodec_parameters_copy(bsf_h264->par_in, in->codecpar) >= 0){
+ if (av_bsf_init(bsf_h264) < 0) bsf_h264 = NULL;
+ }
+ }
+ }
+ }
}
if (type == AVMEDIA_TYPE_AUDIO){
auto in = ctx_->streams[i];
@@ -178,6 +220,16 @@
return ctx_->streams[vs_idx_]->codecpar->codec_id == AV_CODEC_ID_HEVC;
}
+ const bool FormatIn::isAVC1()const{
+ if (IsHEVC()) return false;
+
+ char p[100] = {0};
+ char *sub = av_fourcc_make_string(p, ctx_->streams[vs_idx_]->codecpar->codec_tag);
+ const int ret = strcmp(sub, "avc1");
+ if (ret == 0) return true;
+ return false;
+ }
+
bool FormatIn::openCodec(AVDictionary **options){
if (vs_idx_ == -1) return false;
@@ -191,20 +243,42 @@
int idle_gpu = -1;
+ srand((unsigned)time(NULL));
+
+constexpr int need = 350; // M
+constexpr int reserved = 512; // M
+
for (int i = 0; i < 2; ++i)
{
if(hw_accl_){
- idle_gpu = gpu::getGPUPrior(300, 1024, 0);
+
+ // 璁剧疆gpu index
+ if (prop_->gpu_index_ > -1){
+ if (!gpu::satisfy(prop_->gpu_index_, need, reserved)){
+ hw_accl_ = false;
+ continue;
+ }
+ idle_gpu = prop_->gpu_index_;
+ }else{
+ idle_gpu = gpu::getGPUPrior(need, reserved, 0);
+ // idle_gpu = gpu::getGPU(300);
+ usleep(2000000 + rand()%3000000);
+ if (!gpu::satisfy(idle_gpu, need, reserved)){
+ hw_accl_ = false;
+ continue;
+ }
+ }
+
if(idle_gpu < 0){
logIt("NO GPU RESOURCE TO DECODE");
hw_accl_ = false;
continue;
}
-
+
std::string codec_name(avcodec_get_name(codecpar->codec_id));
codec_name += "_cuvid";
dec = avcodec_find_decoder_by_name(codec_name.c_str());
-
+
if(!dec){
hw_accl_ = false;
continue;
@@ -233,7 +307,7 @@
}
}
}
-
+
return flag;
}
@@ -303,7 +377,40 @@
int FormatIn::readPacket(AVPacket *pkt_out){
auto flag = av_read_frame(ctx_, pkt_out);
+ if (flag < 0) return flag;
+
+ AVBSFContext *bsf = NULL;
+
+ if (IsHEVC()){
+ if (pkt_out->size >= 5 &&
+ AV_RB32(pkt_out->data) != 0x0000001 &&
+ AV_RB24(pkt_out->data) != 0x000001 &&
+ !bsf_hevc){
+
+ const AVBitStreamFilter *f = av_bsf_get_by_name("hevc_mp4toannexb");
+ if (f){
+ if (av_bsf_alloc(f, &bsf_hevc) >= 0){
+ if (avcodec_parameters_copy(bsf_hevc->par_in, ctx_->streams[vs_idx_]->codecpar) >= 0){
+ if (av_bsf_init(bsf_hevc) < 0) bsf_hevc = NULL;
+ }
+ }
+ }
+ }
+
+ bsf = bsf_hevc;
+
+ }else {
+ bsf = bsf_h264;
+ }
+ if (bsf){
+ if (av_bsf_send_packet(bsf, pkt_out) < 0){
+ logIt("bsf_%s send packet failed", IsHEVC() ? "hevc" : "h264");
+ return -1;
+ }
+ return av_bsf_receive_packet(bsf, pkt_out);
+ }
+
return flag;
}
--
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