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472:login:Penguin
 02/08/20 19:32 C1Epl3BU
768a798,864 
> case ACODEC_VORBIS: 
>   printf("Vorbis audio (testing) selected\n"); 
>   ov = (struct oggvorbis_struct_st*)malloc(sizeof(struct oggvorbis_struct_st)); 
>  
>   ov->eos = 0, ov->buf_len = 0; 
>   ov->first = 1; 
>    
>   ov->buf = (char *)malloc(32768); 
>  
>   vorbis_info_init(&ov->vi); 
>   vorbis_encode_init_vbr(&ov->vi,sh_audio->channels, 
>      sh_audio->samplerate,.5); 
>  
>   /* add a comment */ 
>   vorbis_comment_init(&ov->vc); 
>   vorbis_comment_add_tag(&ov->vc,"ENCODER","encoder_example.c"); 
>  
>   /* set up the analysis state and auxiliary encoding storage */ 
>   vorbis_analysis_init(&ov->vd, &ov->vi); 
>   vorbis_block_init(&ov->vd, &ov->vb); 
>  
>   /* set up our packet->stream encoder */ 
>   /* pick a random serial number; that way we can more likely build 
>      chained streams just by concatenation */ 
>   srand(time(NULL)); 
>   ogg_stream_init(&ov->os,rand()); 
>  
>   /* Vorbis streams begin with three headers; the initial header (with 
>      most of the codec setup parameters) which is mandated by the Ogg 
>      bitstream spec.  The second header holds any comment fields.  The 
>      third header holds the bitstream codebook.  We merely need to 
>      make the headers, then pass them to libvorbis one at a time; 
>      libvorbis handles the additional Ogg bitstream constraints */ 
>  
>   vorbis_analysis_headerout(&ov->vd, &ov->vc, &ov->header, &ov->header_comm, 
>     &ov->header_code); 
>   /* automatically placed in its own page */ 
>   ogg_stream_packetin(&ov->os, &ov->header); 
>   ogg_stream_packetin(&ov->os, &ov->header_comm); 
>   ogg_stream_packetin(&ov->os, &ov->header_code); 
>  
>   while(!ov->eos){ 
>     int ov_count = 0; 
>     int result=ogg_stream_flush(&ov->os,&ov->og); 
>     if(result==0) break; 
>       // fwrite(og.header,1,og.header_len,stdout); 
>       memcpy(ov->buf+ov->buf_len, ov->og.header, ov->og.header_len); 
>       ov->buf_len += ov->og.header_len; 
>       // fwrite(og.body,1,og.body_len,stdout); 
>       memcpy(ov->buf+ov->buf_len, ov->og.body, ov->og.body_len); 
>       ov->buf_len += ov->og.body_len; 
>   }

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