h264 mp4

zhangmeng

2020-10-09 d64868c215e35088bfeda67aeb04db0800bf2844

 csrc/ffmpeg/format/FormatOut.cpp

@@ -33,11 +33,16 @@
    ,format_name_("mp4")
    ,in_v_stream_(NULL)
    ,in_a_stream_(NULL)
    ,bsf_h264(NULL)
    ,bsf_hevc(NULL)
   {}

   FormatOut::~FormatOut()
   {
      clear();

        if (bsf_h264) av_bsf_free(&bsf_h264);
        if (bsf_hevc) av_bsf_free(&bsf_hevc);
   }

    void FormatOut::clear(){
@@ -349,7 +354,23 @@
            flag = writeHeader(&avdic);
            av_dict_free(&avdic);
        }
        

        if (v){
            if (v->codecpar->codec_id == AV_CODEC_ID_H264){
                char p[100] = {0};
                char *sub = av_fourcc_make_string(p, v->codecpar->codec_tag);
                if (strcmp(sub, "avc1") == 0){
                    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, v->codecpar) >= 0){
                                if (av_bsf_init(bsf_h264) < 0) bsf_h264 = NULL;
                            }
                        }
                    }
                }
            }
        }
        return flag;
    }
    
@@ -456,6 +477,19 @@

    bool FormatOut::writeFrame2(AVPacket *pkt, bool interleaved){
        
        // h264_mp4toanatax
        if (bsf_h264){
            if (av_bsf_send_packet(bsf_h264, pkt) < 0){
                logIt("bsf_h264 send packet failed");
                return true;
            }
            if (av_bsf_receive_packet(bsf_h264, pkt) < 0){
                logIt("bsf_h264 recv packet failed");
                return true;
            }
        }

        //
        int ret = 0;
        if(interleaved){
            ret = av_interleaved_write_frame(ctx_, pkt);