hi3536上ffmpeg带rtmp移植

1.下载ffmpeg-4.1.3版本源码包

用下面的脚本进行configure：

./configure \--target-os=linux \--prefix=./libs/ \--enable-cross-compile \--arch=arm \--cc=arm-hisiv500-linux-gcc \--cross-prefix=arm-hisiv500-linux- \--nm=arm-hisiv500-linux-nm \--enable-shared \--disable-static \--enable-gpl \--enable-swscale \--enable-avfilter \--disable-devices \--disable-filters \--disable-decoders \--enable-decoder=h264 \--disable-ffplay \--disable-ffprobe \--disable-doc \--disable-encoders \--enable-small \--enable-encoder=flv \--enable-encoder=mp4 \--disable-muxers \--enable-muxer=flv \--enable-muxer=rtsp \--enable-muxer=rtp \--disable-parsers \--enable-parser=flv \--enable-parser=h264 \--disable-demuxers \--enable-demuxer=flv \--enable-demuxer=h264 \--enable-ffmpeg 

然后make和make install，生成的可执行文件以及lib和include等将拷贝到prefix指定的目录下，然后将这个目录拷贝到nfs共享文件夹里面，到板子中，通过软连接的方式，将可执行文件和动态库链接到板子上，因为板子空间有限，所以不直接拷贝到板子上，拷贝之后，可以通过nginx代理，将本地flv文件通过rtmp推送出去，但是mp4文件推不出去，而且rtsp流也没法拉流，所以需要修改configure参数，

2.更换新的configure脚本参数。

更改如下：

./configure \--prefix=./libs/ \--enable-filters   \--enable-asm \--enable-ffmpeg \--enable-ffplay \--enable-ffprobe \--enable-doc \--enable-cross-compile \--cross-prefix=arm-hisiv500-linux- \--arch=arm \--target-os=linux \--host-os=linux \--enable-gpl \--enable-version3 \--enable-small \--enable-shared \--enable-static \--enable-encoder=rawvideo \--enable-encoder=mpeg2video \--enable-encoder=mp2 \--enable-encoder=libx264 \--enable-libx264 \--enable-muxer=adts \--enable-muxer=mpegts \--enable-muxer=mpeg2video \--enable-muxer=rtsp \--enable-muxer=hls \--enable-muxer=h264 \--enable-muxer=rtp \--enable-muxer=avi \--enable-muxer=flv \--enable-muxer=mp4 \--enable-demuxer=mpegts \--enable-demuxer=rtsp \--enable-demuxer=hls \--enable-demuxer=h264 \--enable-demuxer=rtp \--enable-demuxer=flv \--enable-muxer=mp4 \--enable-demuxer=mpegts \--enable-demuxer=rtsp \--enable-demuxer=hls \--enable-demuxer=h264 \--enable-demuxer=rtp \--enable-demuxer=flv \--enable-demuxer=avi \--enable-demuxer=mpegps \--enable-demuxer=mpegtsraw \--enable-demuxer=mpegvideo \--enable-parser=aac \--enable-parser=h264 \--enable-parser=mpeg4video \--enable-parser=mpegvideo \--enable-parser=mpegaudio \--enable-bsf=h264_mp4toannexb \--enable-protocol=http \--enable-protocol=rtp \--enable-protocol=rtmpts \--enable-protocol=https \--enable-protocol=hls \--enable-protocol=file \--enable-protocol=data \--enable-gray  \--enable-safe-bitstream-reader \--extra-cflags=-I/home/zl/vstdio-workspace/hi3536-webapp/x264/x264_hisi/include \--extra-ldflags=-L/home/zl/vstdio-workspace/hi3536-webapp/x264/x264_hisi/lib

添加了一个x264的扩展包.

3.x264移植。

1.下载编译x264。

（1）下载链接如下：

git clone https://github.com/mirror/x264

（2）configure脚本：

CC=arm-hisiv500-linux-gcc  ./configure \
--host=arm-hisiv500-linux \
--prefix=./x264_hisi \
--cross-prefix=arm-hisiv500-linux- \
--enable-static \
--enable-shared \

成功之后执行：

make
make install

然后回到ffmpeg的路径下，修改configure，将x264的库和头文件路径配置上，编译，提示下面的错误：

libavfilter/libavfilter.so: undefined reference to `fminf'
libavfilter/libavfilter.so: undefined reference to `fmaxf'
collect2: error: ld returned 1 exit status
Makefile:108: recipe for target 'ffprobe_g' failed
make: *** [ffprobe_g] Error 1
make: *** Waiting for unfinished jobs....
libavfilter/libavfilter.so: undefined reference to `fminf'
libavfilter/libavfilter.so: undefined reference to `fmaxf'
collect2: error: ld returned 1 exit status
Makefile:108: recipe for target 'ffmpeg_g' failed
make: *** [ffmpeg_g] Error 1

网上查到的资料显示是，海思用的交叉编译链不支持浮点操作，然后也没找到修改方法，看到最多的是用ffmpeg早期版本，因为目前的版本是4.1.3。

4.重新拉取ffmpeg源码，更换版本。

从网上查到ffmpeg的开源链接如下：

git clone https://git.ffmpeg.org/ffmpeg.git

下载之后，默认是最新的release版本，用下面的命令更换分支：

git checkout -t remotes/origin/release/3.4

切换到3.4版本，然后将configure脚本拷过来，进行配置，配置完后，执行make和make install，然后将可执行文件和动态库拷贝到板子上，进行测试，通过测试，可以推mp4文件到rtmp，以及拉rtsp然后推rtmp出去。测试命令如下：

ffmpeg -re -i test.mp4 -vcodec copy -codec copy -f flv rtmp://192.168.0.165:1935/live/mainstream

ffmpeg -i rtsp://admin:12345@192.168.0.200:554/Streaming/Channels/1 -vcodec copy -acodec copy -f flv rtmp://192.168.0.165:1935/live/mainstream

5.测试H265码流的支持，从H265 ipc上拉取H265的rtsp流，然后转rtmp流出去：

命令如下：

ffmpeg -i rtsp://192.168.0.132:554/user=admin_password=tlJwpbo6_channel=1_stream=0.sdp?real_stream -vcodec copy -acodec copy -f flv rtmp://192.168.0.165:1935/live/thirdstream

报错：

[rtsp @ 0x421f0] max delay reached. need to consume packet
[rtsp @ 0x421f0] RTP: missed 46 packets
Input #0, rtsp, from 'rtsp://192.168.0.132:554/user=admin_password=tlJwpbo6_channel=1_stream=0.sdp?real_stream':Metadata:title           : RTSP SessionDuration: N/A, start: 0.040000, bitrate: N/AStream #0:0: Video: hevc, yuvj420p(pc, bt709), 1920x1080, 25 fps, 25 tbr, 90k tbn, 90k tbc
[flv @ 0x98310] Video codec hevc not compatible with flv
Could not write header for output file #0 (incorrect codec parameters ?): Function not implemented
Stream mapping:Stream #0:0 -> #0:0 (copy)Last message repeated 1 times

原因：

rtmp默认是flv封装的，而这个封装默认是不支持HEVC也就是H265的，所以需要打个patch：0020-ffmpeg-flv-support-hevc.patch

diff --git a/libavformat/flv.h b/libavformat/flv.h
index 3571b90279..91f006520c 100644
--- a/libavformat/flv.h
+++ b/libavformat/flv.h
@@ -110,6 +110,7 @@ enum {FLV_CODECID_H264    = 7,FLV_CODECID_REALH263= 8,FLV_CODECID_MPEG4   = 9,
+    FLV_CODECID_HEVC    = 12,};enum {
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index b531a39adc..fc9be86509 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -37,6 +37,7 @@#include "internal.h"#include "avio_internal.h"#include "flv.h"
+#include "hevc.h"#define VALIDATE_INDEX_TS_THRESH 2500@@ -319,6 +320,8 @@ static int flv_same_video_codec(AVCodecParameters *vpar, int flags)return vpar->codec_id == AV_CODEC_ID_VP6A;case FLV_CODECID_H264:return vpar->codec_id == AV_CODEC_ID_H264;
+    case FLV_CODECID_HEVC:
+        return vpar->codec_id == AV_CODEC_ID_HEVC;default:return vpar->codec_tag == flv_codecid;}
@@ -368,6 +371,11 @@ static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream,par->codec_id = AV_CODEC_ID_MPEG4;ret = 3;break;
+    case FLV_CODECID_HEVC:
+        par->codec_id = AV_CODEC_ID_HEVC;
+        vstream->need_parsing = AVSTREAM_PARSE_HEADERS;
+        ret = 3;
+        break;default:avpriv_request_sample(s, "Video codec (%x)", flv_codecid);par->codec_tag = flv_codecid;
@@ -1223,7 +1231,8 @@ retry_duration:if (st->codecpar->codec_id == AV_CODEC_ID_AAC ||st->codecpar->codec_id == AV_CODEC_ID_H264 ||
-        st->codecpar->codec_id == AV_CODEC_ID_MPEG4) {
+        st->codecpar->codec_id == AV_CODEC_ID_MPEG4 ||
+        st->codecpar->codec_id == AV_CODEC_ID_HEVC) {int type = avio_r8(s->pb);size--;@@ -1232,7 +1241,8 @@ retry_duration:goto leave;}-        if (st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_MPEG4) {
+        if (st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_MPEG4
+                || st->codecpar->codec_id == AV_CODEC_ID_HEVC) {// sign extensionint32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000;pts = dts + cts;
@@ -1248,7 +1258,7 @@ retry_duration:}}if (type == 0 && (!st->codecpar->extradata || st->codecpar->codec_id == AV_CODEC_ID_AAC ||
-            st->codecpar->codec_id == AV_CODEC_ID_H264)) {
+            st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_HEVC)) {AVDictionaryEntry *t;if (st->codecpar->extradata) {
diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index fb1dede7ae..711b5dfb05 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -29,6 +29,7 @@#include "avc.h"#include "avformat.h"#include "flv.h"
+#include "hevc.h"#include "internal.h"#include "metadata.h"#include "libavutil/opt.h"
@@ -46,6 +47,7 @@ static const AVCodecTag flv_video_codec_ids[] = {{ AV_CODEC_ID_VP6,      FLV_CODECID_VP6 },{ AV_CODEC_ID_VP6A,     FLV_CODECID_VP6A },{ AV_CODEC_ID_H264,     FLV_CODECID_H264 },
+    { AV_CODEC_ID_HEVC,     FLV_CODECID_HEVC },{ AV_CODEC_ID_NONE,     0 }};@@ -491,7 +493,7 @@ static void flv_write_codec_header(AVFormatContext* s, AVCodecParameters* par, iFLVContext *flv = s->priv_data;if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264
-            || par->codec_id == AV_CODEC_ID_MPEG4) {
+            || par->codec_id == AV_CODEC_ID_MPEG4 || par->codec_id == AV_CODEC_ID_HEVC) {int64_t pos;avio_w8(pb,par->codec_type == AVMEDIA_TYPE_VIDEO ?
@@ -537,7 +539,11 @@ static void flv_write_codec_header(AVFormatContext* s, AVCodecParameters* par, iavio_w8(pb, par->codec_tag | FLV_FRAME_KEY); // flagsavio_w8(pb, 0); // AVC sequence headeravio_wb24(pb, 0); // composition time
-            ff_isom_write_avcc(pb, par->extradata, par->extradata_size);
+            if (par->codec_id == AV_CODEC_ID_HEVC) {
+                ff_isom_write_hvcc(pb, par->extradata, par->extradata_size, 0);
+            } else {
+                ff_isom_write_avcc(pb, par->extradata, par->extradata_size);
+            }}data_size = avio_tell(pb) - pos;avio_seek(pb, -data_size - 10, SEEK_CUR);
@@ -847,7 +853,8 @@ end:AVCodecParameters *par = s->streams[i]->codecpar;FLVStreamContext *sc = s->streams[i]->priv_data;if (par->codec_type == AVMEDIA_TYPE_VIDEO &&
-                    (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4))
+                    (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4
+                     || par->codec_id == AV_CODEC_ID_HEVC))put_avc_eos_tag(pb, sc->last_ts);}}
@@ -898,13 +905,13 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)if (par->codec_id == AV_CODEC_ID_VP6F || par->codec_id == AV_CODEC_ID_VP6A ||par->codec_id == AV_CODEC_ID_VP6  || par->codec_id == AV_CODEC_ID_AAC)flags_size = 2;
-    else if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4)
+    else if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4 || par->codec_id == AV_CODEC_ID_HEVC)flags_size = 5;elseflags_size = 1;if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264
-            || par->codec_id == AV_CODEC_ID_MPEG4) {
+            || par->codec_id == AV_CODEC_ID_MPEG4 || par->codec_id == AV_CODEC_ID_HEVC) {int side_size = 0;uint8_t *side = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size);if (side && side_size > 0 && (side_size != par->extradata_size || memcmp(side, par->extradata, side_size))) {
@@ -967,6 +974,11 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)if (par->extradata_size > 0 && *(uint8_t*)par->extradata != 1)if ((ret = ff_avc_parse_nal_units_buf(pkt->data, &data, &size)) < 0)return ret;
+    } else if (par->codec_id == AV_CODEC_ID_HEVC) {
+        /* check if extradata looks like mp4 formatted */
+        if (par->extradata_size > 0 && *(uint8_t*)par->extradata != 1)
+            if ((ret = ff_hevc_annexb2mp4_buf(pkt->data, &data, &size, 0, NULL)) < 0)
+                return ret;} else if (par->codec_id == AV_CODEC_ID_AAC && pkt->size > 2 &&(AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {if (!s->streams[pkt->stream_index]->nb_frames) {
@@ -1038,7 +1050,7 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)(FFALIGN(par->height, 16) - par->height));} else if (par->codec_id == AV_CODEC_ID_AAC)avio_w8(pb, 1); // AAC raw
-        else if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4) {
+        else if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4 || par->codec_id == AV_CODEC_ID_HEVC) {avio_w8(pb, 1); // AVC NALUavio_wb24(pb, pkt->pts - pkt->dts);}

打完patch之后，重新编译，运行测试命令，就可以拉取H265的rtsp流并成功rtmp转发出去了。