csvorbis.Mapping0.pack C# (CSharp) Method

        public override void pack(Info vi, Object imap, csBuffer opb)
        {
            InfoMapping0 info=(InfoMapping0)imap;

            /* another 'we meant to do it this way' hack...  up to beta 4, we
               packed 4 binary zeros here to signify one submapping in use.  We
               now redefine that to mean four bitflags that indicate use of
               deeper features; bit0:submappings, bit1:coupling,
               bit2,3:reserved. This is backward compatable with all actual uses
               of the beta code. */

            if(info.submaps>1)
            {
                opb.write(1,1);
                opb.write(info.submaps-1,4);
            }
            else
            {
                opb.write(0,1);
            }

            if(info.coupling_steps>0)
            {
                opb.write(1,1);
                opb.write(info.coupling_steps-1,8);
                for(int i=0;i<info.coupling_steps;i++)
                {
                    opb.write(info.coupling_mag[i],ilog2(vi.channels));
                    opb.write(info.coupling_ang[i],ilog2(vi.channels));
                }
            }
            else
            {
                opb.write(0,1);
            }

            opb.write(0,2); /* 2,3:reserved */

            /* we don't write the channel submappings if we only have one... */
            if(info.submaps>1)
            {
                for(int i=0;i<vi.channels;i++)
                    opb.write(info.chmuxlist[i],4);
            }
            for(int i=0;i<info.submaps;i++)
            {
                opb.write(info.timesubmap[i],8);
                opb.write(info.floorsubmap[i],8);
                opb.write(info.residuesubmap[i],8);
            }
        }